Issue: 19221101

Wednesday, November 1, 1922
NOVEMBER 1922
5
True
101
Monday, January 12, 2015

Articles
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Popular Science
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PopularScience_19221101_0101_005_0001.xml
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AUDIOTRON MFG. COMPANY: VACUUM TUBES
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AUDIOTRON MFG. COMPANY
VACUUM TUBES
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PopularScience_19221101_0101_005_0002.xml
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1
1
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National Salesmen’s Training Association
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National Salesmen’s Training Association
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PopularScience_19221101_0101_005_0003.xml
tableOfContents
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CONTENTS
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PopularScience_19221101_0101_005_0004.xml
article
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Our National Crime against Good Health—the Way We Heat Our Homes!
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THE fact that the air in your home during the winter is more arid than the atmosphere of any desert in the world may astonish you. But do you realize, also, that it involves an actual and grave menace to your health? Read what noted experts have to say.
PopularScience_19221101_0101_005_0005.xml
article
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Uncle Sam Says Your Car Is Wasting 30% in Gas— Learn How to Save It!
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GOVERNMENT engineers declare the average motorist wastes from 20 to 30 per cent of gasoline, just through faulty carburetor adjustment. In the next issue of POPULAR SCIENCE MONTHLY are described the extraordinary results of recent experiments by the United States Bureau of Mines, which show that for lack of a simple device to switch the average carburetor instantly into various adjustments for hill climbing, starting, straight running, weather changes, etc., about one third of the 550 gallons of gasoline annually used by most motorists is practically thrown away.
PopularScience_19221101_0101_005_0006.xml
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3
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NELSON DOUBLEDAY, INC.
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NELSON DOUBLEDAY, INC.
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PopularScience_19221101_0101_005_0007.xml
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4
4
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Sweeney RADIO & ELECTRICAL CO
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Sweeney RADIO & ELECTRICAL CO
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PopularScience_19221101_0101_005_0008.xml
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5
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INDEPENDENT CORPORATION
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INDEPENDENT CORPORATION
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PopularScience_19221101_0101_005_0009.xml
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6,8,10,12,14,15,16,18,20,22
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QUICK-ACTION ADVERTISING
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PopularScience_19221101_0101_005_0010.xml
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7
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Chicago Engineering Works
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Chicago Engineering Works
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PopularScience_19221101_0101_005_0011.xml
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8
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U. S. SCHOOL OF MUSIC
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U. S. SCHOOL OF MUSIC
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PopularScience_19221101_0101_005_0012.xml
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8
8
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RAHE AUTO & TRACTOR SCHOOL
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RAHE AUTO & TRACTOR SCHOOL
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PopularScience_19221101_0101_005_0013.xml
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8
8
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AMERICAN SHOW CARD SCHOOL
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AMERICAN SHOW CARD SCHOOL
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PopularScience_19221101_0101_005_0014.xml
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9
9
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19221101_0101_005_0015.xml
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10
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THEO. AUDEL & CO.
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THEO. AUDEL & CO.
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PopularScience_19221101_0101_005_0016.xml
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10
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THE NEW YORK ELECTRICAL SCHOOL
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THE NEW YORK ELECTRICAL SCHOOL
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PopularScience_19221101_0101_005_0017.xml
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10
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AUTHORS’ PRESS
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AUTHORS’ PRESS
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PopularScience_19221101_0101_005_0018.xml
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10
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Keystone Institute
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Keystone Institute
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PopularScience_19221101_0101_005_0019.xml
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11
11
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PELTON PUBLISHING CO.
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PELTON PUBLISHING CO.
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PopularScience_19221101_0101_005_0020.xml
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12
12
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American School
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American School
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PopularScience_19221101_0101_005_0021.xml
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12
12
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19221101_0101_005_0022.xml
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12
12
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FINLAY ENGINEERING COLLEGE
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FINLAY ENGINEERING COLLEGE
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PopularScience_19221101_0101_005_0023.xml
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12
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FRANKLIN INSTITUTE
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FRANKLIN INSTITUTE
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PopularScience_19221101_0101_005_0024.xml
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13
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National Radio Institute
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National Radio Institute
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PopularScience_19221101_0101_005_0025.xml
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14
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G. & C. MERRIAM COMPANY: WEBSTER'S NEW INTERNATIONAL DICTIONARY
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G. & C. MERRIAM COMPANY
WEBSTER'S NEW INTERNATIONAL DICTIONARY
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PopularScience_19221101_0101_005_0026.xml
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14
14
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Correspondence Instruction
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Correspondence Instruction
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PopularScience_19221101_0101_005_0027.xml
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14
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Advertisement
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PopularScience_19221101_0101_005_0028.xml
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14
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The National Poultry Institute, Inc.
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The National Poultry Institute, Inc.
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PopularScience_19221101_0101_005_0029.xml
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15
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Advertisements
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PopularScience_19221101_0101_005_0030.xml
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16
16
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BUREAU OF INVENTIVE SCIENCE
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BUREAU OF INVENTIVE SCIENCE
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PopularScience_19221101_0101_005_0031.xml
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16
16
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UNIVERSITY OF APPLIED SCIENCE
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UNIVERSITY OF APPLIED SCIENCE
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PopularScience_19221101_0101_005_0032.xml
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17
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Advertisements
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PopularScience_19221101_0101_005_0033.xml
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18
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American Technical Society
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American Technical Society
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PopularScience_19221101_0101_005_0034.xml
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18
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Standard Business Training Inst.
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Standard Business Training Inst.
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PopularScience_19221101_0101_005_0035.xml
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19
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Advertisements
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PopularScience_19221101_0101_005_0036.xml
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Advertisement
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PopularScience_19221101_0101_005_0037.xml
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CHEMICAL INSTITUTE OF NEW YORK, Inc.
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CHEMICAL INSTITUTE OF NEW YORK, Inc.
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PopularScience_19221101_0101_005_0038.xml
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20
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METRO ELECTRIC CO.
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METRO ELECTRIC CO.
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PopularScience_19221101_0101_005_0039.xml
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20
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WEST-ANGUS SHOW CARD SERVICE
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WEST-ANGUS SHOW CARD SERVICE
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PopularScience_19221101_0101_005_0040.xml
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21
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Advertisements
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PopularScience_19221101_0101_005_0041.xml
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22
22
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GROSSET & DUNLAP, Publishers
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GROSSET & DUNLAP, Publishers
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PopularScience_19221101_0101_005_0042.xml
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22
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Advertisement
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PopularScience_19221101_0101_005_0043.xml
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22
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Trade and Engineering Schools
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Trade and Engineering Schools
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PopularScience_19221101_0101_005_0044.xml
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23
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Advertisement
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PopularScience_19221101_0101_005_0045.xml
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Advertisement
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PopularScience_19221101_0101_005_0046.xml
article
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25,26,27,94
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How Thrilling New Sport of Aerial Yachting May Develop from Recent Sailplane Contests
Famous Airman Predicts Astounding New Era of Popular Flight
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Augustus Post
MAN has never really flown; he has only made machines that fly. From the time when the Greek myths told how Icarus flew so near the sun that the wax holding his wings was melted, to the time that Leonardo da Vinci, the great Italian painter, drew plans for mechanical wings, even to the day of “Langley’s Folly,” men have dreamed of human flight.
PopularScience_19221101_0101_005_0047.xml
article
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28,29,98,99
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How Plant Hunters Risk Lives to Find New Foods for Your Table
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THEIR achievements almost unnoticed by the very public that has gained wealth and a wider choice of wholesome food through their efforts, a little band of globe-trotting plant hunters from the United States Department of Agriculture, has succeeded in the past 25 years in locating in foreign countries, and introducing into this country, more than 51,000 lots of grains, fruits, forage crops, vegetables and plants regarded as worthy the attention of American plant breeders and experimenters.
PopularScience_19221101_0101_005_0048.xml
article
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Here Are the Most Wonderful Gorilla “Portraits” Ever Taken!
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THE amazing gorilla photographs reproduced here are not only the most remarkable pictures of their kind ever published, but are a valuable addition to scientific knowledge of the fierce “manlike” ape—the rarest and largest of all the ape tribe.
PopularScience_19221101_0101_005_0049.xml
article
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Tunneled Stern Gives Super Speed to Twin Screw Racing Boat
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BY AN ingenious arrangement of surface propellers inclosed within an air tunnel, George F. Couch, of New York City, has perfected what experts say is the first successful twin-screw racing boat in history—the Rainbow II, a marvel of speed that marks a valuable contribution to the science of speed boat design.
PopularScience_19221101_0101_005_0050.xml
article
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31,32
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How America’s Longest Tunnel Will Pierce Rockies
Colorado’s Six-Mile Bore through Continental Divide to Throw Vast Wealth Open to Nation
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HALF a mile below the snowy summit of James Peak—a 13,283-foot Rocky Mountain barrier in northern Colorado—work will soon start on the longest and, from an engineering standpoint, the most remarkable tunnel in the Western Hemisphere—a six-mile bore through the granite backbone of the Continental Divide, at a point 50 miles west of Denver, Colo., on the line of the Denver & Salt Lake Railroad.
PopularScience_19221101_0101_005_0051.xml
article
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Sees Speed and Comfort in Flat Bottomed Liners
Veteran Designer of “Rectangular” Lake Freighters Predicts Economy for Similar Self-Stabilizing Ocean Vessels
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THIRTY years of success in riding heavy seas on inland lakes and along coastwise cargo routes have so demonstrated the seaworthiness of the flatbottomed, straight sided ships designed by Captain Alexander McDougall, of Duluth, Minn., that the veteran mariner now proposes the use of his long famous “rectangular” vessels in transoceanic service to replace the gracefully curved ocean liners with their higher construction cost and smaller cargo capacity.
PopularScience_19221101_0101_005_0052.xml
article
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“Battlebag” Is New Sport for Small Yards
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"BATTLEBAG” is a new game devised for either indoor or outdoor sport. The apparatus consists of a horizontal wire stretched between posts, from which a punching bag is suspended by a loop. Knots are placed four feet away from each post to serve as goals.
PopularScience_19221101_0101_005_0053.xml
article
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Largest Tow-Rope Is Spun from Cocoanut Fibers
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A COIR hawser 24 inches in circumference, produced recently as a towline for a powerful seagoing tug, is believed to be the largest rope ever spun. It is by no means the strongest ever made, however, since coir—spun fibers of the cocoanut— is only about one quarter as strong, pound for pound, as rope of manila fibers, which are obtained from the leaves of the wild banana tree.
PopularScience_19221101_0101_005_0054.xml
article
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Music Case Becomes a Stand when It Is Unfolded
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A MUSIC case that may be adjusted for use as a music stand has been invented by Edward L. O’Donnell, of St. Louis, Mo. When closed, the device resembles a suitcase; but when opened for use, four metal legs drop down and support the case, one side of which, opening outward, reveals two compartments for the sheets of music.
PopularScience_19221101_0101_005_0055.xml
article
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Boys Rob Tires of Air to Inflate Footballs
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ROYS in New York have discovered that the easiest way to blow up a football is to “borrow” a little air from an auto tire —usually the spare at the rear of some unoccupied car. By slipping the rubber tube of the bladder over the top of the valve, the football is inflated instantly, and without undue expenditure of effort.
PopularScience_19221101_0101_005_0056.xml
article
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Ceilings Reached with Telescoping Elevator
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FOR interiors where laborers must work at varying heights above the floor a new telescoping elevator has been perfected. It is manipulated by a hand crank at the base. The workman can also use the ladders at the side. For stability, two outriggers with friction cups are swung from the base.
PopularScience_19221101_0101_005_0057.xml
article
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New Detachable Reel Holds Hose without Kinking
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ANY part of the hose or all of it may be unwound from a recently invented detachable hose-reel without becoming looped and kinked and again wound on the reel when no longer needed. The reel is attached to the faucet, around which it revolves freely.
PopularScience_19221101_0101_005_0058.xml
article
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Perforated Cards Despatch City Fire Fighters
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THIRTY-THREE seconds after an alarm is turned in, the fire fighting apparatus of New York City is on its way to the fire. In that short time with the aid of perforated cards the alarm is verified, recorded at the central office, and relayed to the engine house nearest the fire.
PopularScience_19221101_0101_005_0059.xml
article
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Photographer Snaps Car in Mid-Crash
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FAST work with a camera enabled a photographer to snap the remarkable action picture shown below before the capsized car had ceased rolling. The camera had previously been focused on the turn in the road and the photographer, with unusual presence of mind, followed the skidding car with his lens and snapped the picture.
PopularScience_19221101_0101_005_0060.xml
article
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Siren Played by Sliding Drive Belt
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THE strident notes of the siren have been musically tamed by a unique invention of Dr. A. R. Naber, of Holland, named by him “the magic flute.” In the ordinary siren the pitch of the musical notes is determined by the frequency of the impulses of compressed air passing through the openings in a rotating disk.
PopularScience_19221101_0101_005_0061.xml
article
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Every Step Adds a Mile to the View
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AN ADDED mile of sight for every step is claimed for “the Sisters’ Lookout,” a forest fire station in the Deschutes National Forest, Ore. A frame of rough timber nailed to a fir tree forms a 105-foot ladder to the observation platform.
PopularScience_19221101_0101_005_0062.xml
article
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Speed Increased with Dummy Typewriter
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A NEW typewriting machine, invented by Walter A. Butler and A. V. Cooper,of Troy, N. Y., is said to increase students’ speed. The arrangement of keyboard standard, but the keys are blank. Back of the keys are four tiers of letters. Above each symbol is a white disk connected with the dummy keyboard.
PopularScience_19221101_0101_005_0063.xml
article
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Air-Hammer Breaks Ton of Pig Iron a Minute
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A PNEUMATIC hammer is used for breaking up pig iron in an Alabama blast furnace. When molten iron from blast furnaces is allowed to cool in the pig or cast condition, the various pigs have to be broken up into single sections. The equipment consists of an air hammer with a piston and striker of unusual size, and with valves and ports so arranged that a blow may be struck of sufficient force to break a pig into halves and sever it from the sow at the one stroke.
PopularScience_19221101_0101_005_0064.xml
article
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Powerful Electromagnets Now Assay Iron Ore
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POWERFUL electromagnets are now used to analyze iron ore when it is desired to find out the percentage of magnetic iron in concentrate. This is usually the case with the magnetic iron ore deposits in Minnesota. The novel electrical apparatus now employed was originally designed and built at the University of Minnesota.
PopularScience_19221101_0101_005_0065.xml
article
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Flashlight Illuminates Shadowed Work
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HAND tools that supply their own illumination to facilitate the work being done have been brought out by a Mid-Western firm. The complete toolkit is made up of the handle containing the battery and light source, three wrenches, and one screwdriver.
PopularScience_19221101_0101_005_0066.xml
article
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Auto Carries Record Load for Yeggmen
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FINDING conditions in an office building of Los Angeles, Calif., unfavorable to safecracking, some robbers walked the streets until they found an automobile. Then driving it to the office building they parked it in front and proceeded to run the safe of an insurance company from the eleventh floor to the elevator and then down to the ground.
PopularScience_19221101_0101_005_0067.xml
article
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Pile Driver Hustles Pipe into the Ground
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IN LOUISVILLE, Ky., the electric power and light company uses a portable pile driver for driving short lengths of pipe. It is said the device cuts the working time from two hours to 10 or 15 minutes. Before this pile driver was perfected, ground pipes were driven by a sledge in the hands of a man, supported by climbers on the pole.
PopularScience_19221101_0101_005_0068.xml
article
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Trap Nests Betray Loafer Hens
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TRAP nests that work without springs have been perfected by three brothers of Sunnyvale, Calif., to separate laying hens from the loafers. The nest consists of a box with an upper and a lower compartment and four doors. The hen desiring to lay enters from the backyard through one door into the upper compartment.
PopularScience_19221101_0101_005_0069.xml
article
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Extracted Nails Are Almost “As Good as New”
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BY EQUIPPING a hammer with an adjustable fulcrum that may be extended to any length within the limits ordinarily required in carpentry, J. A. Bartosz, of Salem, Ore., has invented a device that permits a workman to withdraw nails of any size without bending them.
PopularScience_19221101_0101_005_0070.xml
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Inkstand Is Replica of Historic Gates
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AN INKSTAND that is a miniature replica of the historic city gates of St. Augustine, Fla., is one of the latest gifts presented to President Harding. The original gates were built by the military governors during the Spanish occupation in the eighteenth century, and St.
PopularScience_19221101_0101_005_0071.xml
article
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Artery Trouble Detected at Base of Fingernails
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HARDENING of the arteries can now be detected in its early stages by examining the skin at the base of the fingernail under a high-power microscope. Doctor Lombard, of the Mayo Clinic, Rochester, Minn., a prominent physiologist, recently discovered that when a drop of cedarwood oil is placed upon the skin and a small but intense electric light held just above it, the minute capillaries that form the smallest subdivision of the blood vessels, become visible under the stereoscopic type of microscope.
PopularScience_19221101_0101_005_0072.xml
article
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Enormous Steam Heated Spout Speeds Asphalt Handling
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BLACK paraffin or asphalt, composing about 80 per cent of the crude oil from which it is obtained during the fractional distillation of certain black oils of California, finds a ready market in the manufacture of varnishes and paints and in the preparation of roofing and road surfacing compounds, but the low price obtained for it calls for every bit of ingenuity on the part of the distillery to cut the cost of handling and shipping to a minimum.
PopularScience_19221101_0101_005_0073.xml
article
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Creates Job by Using His Bicycle as Workshop
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FINDING himself out of work and with meager assets, consisting mainly of a bicycle, a grindstone, and a few odds and ends, J. E. Anderson, a woodworker of Los Angeles, Calif., solved the problem of making an honest living by transforming his bicycle into a grinding machine.
PopularScience_19221101_0101_005_0074.xml
article
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38
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Camera Support Is an Aid in Photographing Planes
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FOR studying the action of airplanes in flight, Anthony H. G. Fokker, the noted designer and builder of aircraft, uses a motion picture camera and a unique method of support. When he found that it is practically impossible to photograph an airplane in flight with a motion picture camera resting on a tripod, because of the difficulty of adjusting the camera to the constantly changing angle of the object, he invented a supporting device that fits over the photographer’s shoulders.
PopularScience_19221101_0101_005_0075.xml
article
38
38
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Some Secrets of Successful Dog Photography
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RAW meat placed on the top of the camera is one secret of successful dog pictures. The dog must be persuaded to “watch the birdie” in various ways—by fixing his attention on some person, or on something moving at a distance, for unless the dog’s attention is distracted, it will be apprehensive of the lens, and flinch when it hears the shutter click.
PopularScience_19221101_0101_005_0076.xml
article
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39
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Old Bridge, Doomed, Helps to Build Successor
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ALTHOUGH declared unsafe for traffic, the 33-year-old suspension structure over the Willamette River at Oregon City, Ore., proved to be indispensable to the engineers during the erection of the new 350-foot steel arch. When the bridge builders were prevented from constructing the usual false work, by the great depth of the river at the bridge site and the intensity of water traffic, a scheme was devised so that when a section of the new arch had been swung into position, a cable was carried from it to the top of the tower and down to an anchor on the far side.
PopularScience_19221101_0101_005_0077.xml
article
39
39
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Hydraulic Press Makes Pulleys from Thin Paper Disks
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PULLEYS made of built up sections of paper disks, supported in their centers by a web of pressed steel or cast iron, are manufactured by an interesting use of glue and high pressure. First, thin paper disks of a slightly larger diameter than the finished pulley are glued together under high pressure until sections one inch thick are obtained.
PopularScience_19221101_0101_005_0078.xml
article
39
39
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Brake Lining Is Tested on Subway Escalator
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BRAKE linings that are compressed under a pressure of 1000 tons and woven and doped by a new process of manufacturing friction fabrics, have demonstrated phenomenal wear-resisting qualities in recent tests. A sample of the new product was recently placed at the foot of an escalator in a subway where 26,000,000 people walked across it.
PopularScience_19221101_0101_005_0079.xml
article
40
40,41,97,99
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Did Germs from Other Worlds Bring Life to Earth?
Amazing New Theories about Living Conditions on Mars and Venus
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Scriven Bolton
THIS article concerns a great present-day debate among scientists over the “living conditions” on Mars and Venus, and over the question of where the life that has grown upon our earth first came from. Far less a speculation, but equally fascinating, is the story of the evolution of life after it actually developed on earth.
PopularScience_19221101_0101_005_0080.xml
article
42
42,43,44
[no value]
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Jack Binns’ Ten Commandments for the Radio Fan
First Series: How to Get Better Results with Your Crystal Detector Outfit
How to Take Care of Your Crystal and Test Its Quality
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Jack Binns
A FAMOUS radio engineer of my acquaintance quite recently constructed one of E. H. Armstrong’s super-regenerative circuits, and undertook a short series of experiments with it. At the conclusion, he summed up his opinion of the new system in these words: “It’s no blankety-blank good!” Now the fact is, of course, that the Armstrong super-regenerative circuit is not only good, but epoch-making.
PopularScience_19221101_0101_005_0081.xml
article
43
43
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The World’s Most Powerful Vacuum Tube
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PERFECTION of the most powerful vacuum tube in the world—the 100kilowatt giant just produced by engineers of the Bell laboratories—is undoubtedly the outstanding radio development of the month. One of these tubes would be sufficient to maintain constant wireless telegraph communication across the Atlantic Ocean, while four of them, joined in parallel at the gigantic transatlantic wireless stations, should permit continuous telephone conversations between New York and European capitals under all conditions.
PopularScience_19221101_0101_005_0082.xml
advertisement
44
44
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Advertisement
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PopularScience_19221101_0101_005_0083.xml
article
44
44
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This Self-Fitting Wrench Can’t Slip
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A WRENCH with parallel jaws that is instantly self-adjustable to the size of the work has been brought out by a tool manufacturer in Baraboo, Wis. The wrench is made in 10 different sizes to accommodate work up to 4 inches in diameter. The principal feature of the tool is a sliding fulcrum that insures a powerful grip by causing the force of the lever to be exerted close to the load.
PopularScience_19221101_0101_005_0084.xml
article
45
45
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Tiny Trains Aid Engineers in Race with Flood
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RACING against time in a long-odds attempt to complete a floating concrete dam across the Gila River in Arizona before floods set in, engineers of the United States Indian Bureau finished the work recently, just seven days before the torrents poured down the river bed.
PopularScience_19221101_0101_005_0085.xml
article
45
45
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Trout Guarded from Birds
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Explosive Lantern
THE manager of a trout farm, on the outskirts of Salt Lake City, formerly lost many fish through depredations of herons and cranès, which made a practice of visiting his ponds during the night. Now the trout are protected by an explosive acetylene' lantern that goes off with a bang every 15 minutes.
PopularScience_19221101_0101_005_0086.xml
article
46
46
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Booster Helps Locomotive Make Grades
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BECAUSE the advanced types of locomotives are approaching the weight limits of track and roadbeds, the use of the “booster” is becoming wide-spread. The booster is a supplementary driving unit exerting its force on the idle trailers and utilizing them to aid the tractive effort of the locomotive.
PopularScience_19221101_0101_005_0087.xml
article
46
46
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Battery Frozen in Block of Ice Is Unharmed
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FROZEN inside a solid block of ice, a dry battery of new design recently drove an automobile through the streets of Denver, Colo., for five days. Special plates, a special separator, and a secret formula for the electrolite are given by the inventors as the explanation of this unusual feat.
PopularScience_19221101_0101_005_0088.xml
article
46
46
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Pocket Adder Calculates in Millions
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SUMS up to nine million dollars may be added on a new pocket calculator only five inches long, 3½ inches wide and half an inch thick, and selling for only two dollars. The miniature machine will add or subtract as conveniently as any of the larger machines.
PopularScience_19221101_0101_005_0089.xml
article
46
46
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Micrometer Caliper Has Four Inch Variation
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BECAUSE of the increasing number of small pistons on automobiles, a new micrometer caliper that will take measurements from two to six inches has come into wide use. The four-inch variation is made possible by four interchangeable anvils furnished with each instrument.
PopularScience_19221101_0101_005_0090.xml
article
46
46
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Six-in-One Auto Gage Worn as Watch Charm
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NUMEROUS jobs around the automobile, such as setting valve tappets, distributing head points and spark plug gaps, as well as fitting piston heads and determining the correct thickness of shims, are simplified by a special six-in-one gage recently perfected.
PopularScience_19221101_0101_005_0091.xml
article
47
47
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[no value]
Designs Concrete Arches with Microscope
Scientist Invents Method of Using Frail Paper Models to Test Strength of Complicated Engineering Structures
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THE skyline of America would reveal many more attractive concrete structures if engineers, instead of adhering to the staid and limiting processes of mathematical analysis, would make wider use of a new mechanical method of studying concrete buildings, according to Professor G. E. Beggs, of Princeton University.
PopularScience_19221101_0101_005_0092.xml
article
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48
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A Page of Novel Photographs from the News of the Month
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PopularScience_19221101_0101_005_0093.xml
article
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49
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Steel Patches Mend Rusted Pipe Line
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PATCHES of steel plate, applied like plasters to weak spots and securely welded in place, recently effected repairs to a 3000-foot water pipe line in Honduras, South America, saving the cost of rebuilding the entire line. This 22-inch pipe line, which supplies the Guadalupe plant of the Honduras Rosario Silver Mining Company, had been in service for many years.
PopularScience_19221101_0101_005_0094.xml
article
49
49
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Talking Machine Phones Height of Water in Reservoir
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BY COMBINING the telephone and phonograph, an English firm has perfected a novel device that automatically announces in either words or code signals the height of water in a distant pond or reservoir. The recorder can be “run up” or switched into any existing telephone or telegraph circuit when information about the height of water is sought.
PopularScience_19221101_0101_005_0095.xml
article
50
50,51
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Office Safes Survive Terrific Roasting in Test Oven
Novel Theater Audience Sees Undamaged Papers Removed from Improved Steel Cabinets After Dramatic Ordeal of Fire
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FIVE hundred salesmen, their eyes focused on one point, gaze with eager interest and suppressed excitement as a white hot steel safe, weighing half a ton, is drawn from a roaring inferno of fire and quickly swung three stories in the air. They hold their breaths during the short interval in which the craneman gathers his strength for a powerful jerk at the release rope.
PopularScience_19221101_0101_005_0096.xml
article
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Are Modern Office Buildings Really Fireproof?
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PAPERS containing records valued at more than $5,000,000, locked in safes that were relied upon to be fire and burglar proof, were burned to cinders in a $15,000,000 fire, illustrated above, that recently swept the upper stories of the Burlington office building in Chicago, also believed to be fireproof.
PopularScience_19221101_0101_005_0097.xml
article
51
51
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Unusual Flying Boat Has Hull and Wings of Duralumin
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OUTSTANDING in its design because of its light weight, casehardened metal body and the elevated position of its engine, the flying boat designed by Herr Dornier, Zeppelin designer, represents the latest advance in combination water and air craft.
PopularScience_19221101_0101_005_0098.xml
article
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52
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Pipes Laid with Drills to Save Lawns
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USING compressed-air driven drills and extension rods, a light and power company in Brooklyn, N. Y., has found it economical when installing electric light supply lines to bore holes from cellar to street rather than to dig trenches as is usually done.
PopularScience_19221101_0101_005_0099.xml
article
52
52
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Dry Cell Swings Pendulum of “Never Wind” Clock
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“PUT out the clock, wind the cat, and come to bed” as a night-time admonition may soon be scrapped by the perfection of a clock that keeps step with the minutes month after month practically without attention. George S. Tiffany, of Summit, N. J., the inventor, calls it a “never wind” clock.
PopularScience_19221101_0101_005_0100.xml
article
52
52
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Vines Planted with Aid of Electric Drills
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BY THE use of an electric power drill, a Californian grape grower has devised an ingenious method of planting his 200 acres in record time. From a near-by power line, an insulated cable long enough to reach every part of the planting area was extended by permission of the power company.
PopularScience_19221101_0101_005_0101.xml
article
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52
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Six Shooter Is Combined with Flashlight
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BY COMBINING a flashlight with a six shot revolver, S. P. Cottrell, of Buffalo, N. Y., has produced a weapon that is particularly valuable to night watchmen. The barrel of the gun is fastened to the top of the flashlight tube, and the magazine holding the six cartridges is within the tube.
PopularScience_19221101_0101_005_0102.xml
article
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Pocket Radio Set Tips Off Stock Brokers
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A MYSTERIOUS leakage of secret information from the stock exchange to curb brokers was recently traced by an officer of the San Francisco detective force to a member of the exchange who carried a miniature radio transmitter strapped around his waist.
PopularScience_19221101_0101_005_0103.xml
article
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Explorer Finds Strange Relics of Lost Race
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FLAT boulders of volcanic lava, mysterious caves and secret mounds, covered with pictorial inscriptions that may have been the work of America’s earliest inhabitants have been discovered in a deserted section of Owyhee County, Idaho, by an exploring party led by Robert Limbert, of Boise.
PopularScience_19221101_0101_005_0104.xml
article
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53
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Frail Canoe Supports Heavy Weight
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TO DEMONSTRATE the strength of a new style canoe built of veneer, it was subjected recently to a weight of 3420 pounds. The sag was only threequarters inch. By making the veneer in long sheets, the canoes are molded without joints below the waterline, except at the ends.
PopularScience_19221101_0101_005_0105.xml
article
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54
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To This Child Musical Sounds Have Color!
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A SCOTCH woman with a broad “burr” in her speech was reading a story not long ago, to little Edgar Curtis, age three years and seven months, the son of Professor and Mrs. O. F. Curtis, of Cornell University. When the story was ended, the child said to his mother: “Do you know what color it is when she reads? It’s black.”
PopularScience_19221101_0101_005_0106.xml
article
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54
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Engine Winds Circus Tent on Spool
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HUGE, motor driven spools, on which circus tents are wound after the show is over, are among the most recent of the time saving devices by which circus managements have developed amazing speed in settling and “pulling up stakes” during one-day stands.
PopularScience_19221101_0101_005_0107.xml
article
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54
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Small Spring Hammer Tests Hardness of Metal
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MACHINE shops that cannot afford the expense of a Brinell hardness testing machine may utilize an apparatus, said to be of equal accuracy, invented by Richard Baumann, of Stuttgart, Germany, which consists of two telescoping tubes. As the rear tube is pushed forward, a steel hammer in the interior is submitted to the thrust of a spring, and at the given tension, which can be adjusted by the operator, the hammer is disengaged.
PopularScience_19221101_0101_005_0108.xml
article
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Working Single Handed under Water, Diver Mends Ship’s Bottom by Use of Pattern Patch
Remarkable Repair Job Completed in a Week without Drydock
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SEVEN days after a submerged anchor had. ripped a jagged hole in the bottom plates of the Japanese steamer Tamon Maru VIII as she was leaving the harbor of Newcastle, Australia, recently with a full cargo of phosphates, ingenious ship mechanics and intrepid divers, working continuously, had built a coffer dam around the break and applied a four-foot patch that failed to show a trace of leakage.
PopularScience_19221101_0101_005_0109.xml
article
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56,57
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Radical New Shoe with “Automatic Fit” Promises Us Relief from Common Foot Troubles
Manufacturer s Scientific Shoes Based on Natural Foot Shape
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Robert E. Martin
THE neglected cause of a multitude of human ills—badly fitting shoes, which statistics show are worn by from 70 to 90 per cent of our male population, and which, science has lately proved, produce serious bodily disorders and actually gravely impair many a man’s earning power—may be remedied by a radical change in shoe design now being developed in Rochester, N. Y.
PopularScience_19221101_0101_005_0110.xml
article
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A Rebel Shoemaker’s Message for You
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THE modern shoe carries its own condemnation with it—in the shape of no less than 126 devices now on the market for remedying the defects that it has caused in the human foot. Flat foot and the hundreds of other troubles that affect wearers of the ordinary shoe are caused by the struggle of the foot to accustom itself to a hard, flat sole that does not allow the joints of the foot free play.”
PopularScience_19221101_0101_005_0111.xml
article
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57
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How Flat Soles and Tight Laces Ruin Our Feet
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IN THE normal human foot the arch may be compared with a resilient bow, which bends under the weight of our bodies as we walk and gives the “spring” to our step. The accompanying X-ray diagram illustrates the foot’s bowlike structure and shows how, in a tightly laced, ill-fitting shoe, the joints of the foot are compressed, while pressure applied by the tight lacing in the direction of the arrow causes the arch to lose its natural, bowlike resiliency.
PopularScience_19221101_0101_005_0112.xml
article
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58
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Automatic Hitch for Tractor Trailer
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SPECIAL automatic hitching attachments for the tractor trailer, which transfer the dead weight of the trailer from the drawbar to the spring suspended platform of the tractor, have been incorporated in a new type of trailmobile. By means of a long tongue that slides over the platform of the tractor, 30 per cent of the trailer load is pivoted directly over the tractor wheels where the traction is greatest.
PopularScience_19221101_0101_005_0113.xml
article
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58
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Glue Pencil Replaces Paste-Pot
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A GLUE pencil that leaves a dot of mucilage wherever it is pressed upon the paper is the latest invention to replace the pastepot. The device is equipped with a small ball valve at the tip, similar to the valves in some types of grease cups. This makes the pencil leakproof, since the valve closes the tip until the pencil is held vertically and pressed upon the paper.
PopularScience_19221101_0101_005_0114.xml
article
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58
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Rubber and Auto Fuel from Corn Cobs
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FROM the lowly corn cob it is now possible to produce low priced substitutes for hard rubber and synthetic resin products, thanks to research work by chemists of the Department of Agriculture. These chemists announce that a new motor fuel supply may also result.
PopularScience_19221101_0101_005_0115.xml
article
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New Machine Cuts and Folds 400,000 Boxes an Hour
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WITH orders for folding boxes being placed by the 100,000,000, and with one plant alone producing 3,000,000 cigarette cartons every day, even the latest development in automatic machinery for making folding boxes, capable of turning out 400,000 units an hour, has difficulty in keeping pace with the public demand for package goods.
PopularScience_19221101_0101_005_0116.xml
article
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Snakes Kill Few Persons in the United States
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DEATH from snake bites in the United States is comparatively rare, although the average mortality from venomous snakes is more than 10 per cent of the persons bitten, according to figures compiled by the Biological Survey of the Department of Agriculture.
PopularScience_19221101_0101_005_0117.xml
article
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Whole Community Joins in Nebraska Coyote Hunt
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THREE thousand men, women and children, distributed over a Nebraska prairie in the form of a hollow square, 10 miles on a side. At a signal, each of the four sides advances, closing in toward the center, guided by captains— and the fun begins.
PopularScience_19221101_0101_005_0118.xml
article
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Fire Blasts Kill Weeds in City Parkway
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FIRE-BLASTING is now being used to destroy weeds along the parkways of Alhambra, Calif. The city has equipped a wagon with a combination pressure tank, a kerosene reservoir, and a small gasoline engine to drive a centrifugal blower. From the tanks the mixture of vaporized kerosene and compressed air is delivered through hoses ending in long metal nozzles improvised from 1½-inch pipe.
PopularScience_19221101_0101_005_0119.xml
article
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Huge Hillside Sign Built of Old Boxes
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ON A steep hillside in the suburbs of a southern California city is a huge outdoor advertising signboard consisting of but one word—“Lots”—in white letters 75 feet high and a maximum width of 20 feet. The sign can be seen and read for two miles along a much traveled boulevard.
PopularScience_19221101_0101_005_0120.xml
article
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Camera Reveals Winning Horse when Judges Fail
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HORSE races “won by a nose” are too close for the human eye to judge correctly, say experts. For this reason European race tracks are adopting a photographic method that not only pictures infallibly the final result, but also preserves a vivid record of the thrilling progress of the leaders during the last six feet of a neck-and-neck run.
PopularScience_19221101_0101_005_0121.xml
article
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Chain Screens Protect from Furnace Heat
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PATENTED protective screens, made of many small chains hung vertically from the top of the furnace door hold back the intense heat of the fire in many American factories and prevent flames from striking back at the worker when the door is opened.
PopularScience_19221101_0101_005_0122.xml
article
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New X-Rays Discovered
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MEASUREMENTS made in 12 different gases and vapors by the Bureau of Standards reveal Xrays having wave lengths never before known. There has always existed a dark region between the waves of visible light and those of the longest Xrays, but this gap is now nearly closed.
PopularScience_19221101_0101_005_0123.xml
article
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61
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Will New “Sugar Cane Lumber” Cut Cost of Home Building?
Great Strength in Boards of Waste Fiber
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ANEW “woodless” lumber, manufactured from sugar-cane waste and remarkable for extreme lightness, strength, and excellent insulating qualities, is now being turned out by Louisiana manufacturers, who claim that their product will lower the cost of house construction, cut home fuel bills in half, and, when made into shipping containers, save hundreds of thousands of dollars annually in freight bills.
PopularScience_19221101_0101_005_0124.xml
article
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62
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Smoking on Air Liners Is Safe with Pipe Cap
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PIPE smoking on air liners is made safe by a novel pipe cap and lighter recently introduced in England. It consists of a cylinder of metal gauze closed at one end and terminating at the other in an attachment to the pipe bowl. The match is inserted through a self closing aperture in the gauze and ignited by striking the head on a strip of abrasive material inside.
PopularScience_19221101_0101_005_0125.xml
article
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62
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Traveling Crane Cleans Water Intake
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THE use of a traveling electric crane to clear silt and debris from the water intake of a power plant is a new departure in engineering. In the installation at Cincinnati, Ohio, large debris is arrested by heavy iron grillwork backed by traveling screens, while a grab bucket from the crane removes both the silt from the well and the driftwood from the front of the hurdle or grill.
PopularScience_19221101_0101_005_0126.xml
article
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Engine Runs Homemade Coal Conveyor
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TO DELIVER coal to customers living in houses 50 or more feet from the nearest driveway, without injuring the lawns, shrubs, and flower beds surrounding the dwelling, an ingenious coal dealer in Seneca Falls, N. Y., has built for himself a portable conveyor out of odds and ends picked up about his coal yard.
PopularScience_19221101_0101_005_0127.xml
article
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62
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Sunlight Cure for Rickets
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THAT rickets, a common disease among children, is caused by lack of sunlight rather than by lack of vitamines, as has been supposed, is the conclusion reached after experiments with sunlight at the College of Physicians and Surgeons, Columbia University.
PopularScience_19221101_0101_005_0128.xml
article
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Silent Practice ’Cello Is Collapsible
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REALIZING that the long hours of practice on her ’cello sometimes bothered occupants of adjacent rooms, Mlle. Adele Clément, an honor pupil of the Paris Conservatoire, has invented a semi-mute ’cello which is collapsible. Without sounding board and sound chamber, the ’cello cannot be heard outside the room in which it is played.
PopularScience_19221101_0101_005_0129.xml
article
63
63
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[no value]
Counter on Auto Wheel Measures Distances
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GREATER speed in road measurements, such as are required in staking out telephone poles, has been obtained by the invention of an electric device, attached to the automobile wheel, that accurately records distances. The counter is mounted on the instrument board, and is operated by an electric interrupter on the front wheel, which consists of two small stationary brushes in contact with a revolving surface fixed to the wheel.
PopularScience_19221101_0101_005_0130.xml
article
63
63
[no value]
[no value]
Movable Stairway Vanishes into Ceiling
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PORTABLE stairways that slide into the room above have been developed for use in bungalows where space must be conserved and in houses where space is not available for permanent steps. A panelcovered opening about the size of an ordinary door accommodates the passage of the stairway through the ceiling.
PopularScience_19221101_0101_005_0131.xml
article
63
63
[no value]
[no value]
Truck Body Dumps Bricks in Neat Pile
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A SPECIAL truck body recently developed for handling bricks will dump an entire load in a neat pile containing from 500 to 2600 bricks without breakage. Only one man is needed to operate the truck and body. In loading the special body, a wooden platform or pallet is inserted in brackets at the rear of the body.
PopularScience_19221101_0101_005_0132.xml
article
63
63
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[no value]
Air Raid “Listeners" as Radio Amplifiers
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LARGE horns that were used in England during the war to listen for the approach of German air raiders are being converted into radio horns for the entertainment of the public. Instead of receiving sounds from the air and intensifying them by reflecting them upon a microphone placed at the tip of the cone, as they did during the war, these horns now act as megaphones for the broadcast distribution of sound waves reproduced in amplified intensity by the diaphragm at the small end, operated by the impulses of the radio waves.
PopularScience_19221101_0101_005_0133.xml
article
64
64
[no value]
[no value]
Desks “Out-of-Square” Help Pupils’ Eyes
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TO SOLVE the problem of comfortably seating school pupils with their backs to the windows and their faces toward the teacher, and so eliminate eye strain, strangely shaped desks are now being manufactured, the tops of which are in the form of “rhomboids,” or figures that may be described as “distorted rectangles,” having opposite sides and angles equal, but not being equilateral.
PopularScience_19221101_0101_005_0134.xml
article
64
64
[no value]
[no value]
Two-Wire Ford Timer Needs No Lubrication
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How two-wire timer is connected with four cylinders
IN A newly invented timer for Ford cars, which uses two wires instead of the usual four, sliding brushes and contact surfaces are of copper and brass, eliminating need of lubrication and insuring an excellent electrical contact of low resistance.
PopularScience_19221101_0101_005_0135.xml
article
64
64
[no value]
[no value]
Twin-Seat Motorcycle Runs on Two Wheels
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A MOTORCYCLE for two, with seats side by side and minus the sidecar requiring support by a third wheel, has been developed by a French inventor. The frame of the machine supports between the wheels a cross frame providing a seat on each side and a double footrest large enough to hold small baggage.
PopularScience_19221101_0101_005_0136.xml
article
64
64
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[no value]
200-Foot Radio Tower Moved on Railway
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BY THE ingenious use of two parallel railway tracks, four street-car trucks and screwjacks, soldiers at Fort Sam Houston, Tex., recently lifted a steel radio tower from its foundation, transported it in an upright position to a site 250 feet distant and placed it on a new foundation— all within 10 days.
PopularScience_19221101_0101_005_0137.xml
article
65
65
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[no value]
Trade-Pulling Window Displays World Products
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A WINDOW trimming idea that not only attracted a continual gathering of pedestrians in Boston, Mass., but brought many requests from school teachers for photographs of the display, consisted merely of a huge map of the world with ribbons connecting the various countries with samples of the food products obtained from each country.
PopularScience_19221101_0101_005_0138.xml
article
65
65
[no value]
[no value]
Suction Tool Cleans Full Swimming Pool
[no value]
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[no value]
REMOVING dirt and sediment from the bottom and sides of an indoor swimming pool, without draining the water from the pool, is possible now with the perfection of a suction tool resembling a vacuum cleaner. The cleaner is attached to a long, flexible hose, one end of which is coupled to a permanent plug in the side of the pool. The narrow suction slot of the tool is armed with a stiff brush that scrapes sediment from the borders of the tank.
PopularScience_19221101_0101_005_0139.xml
article
65
65
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Shaft of New Propeller Is above Water
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WASTE of power in propelling shallow draft ships has been lessened recently by a Scottish firm of shipbuilders through the perfection of a method of driving such craft through shallow waters by means of “vane wheels,” that are only partly submerged.
PopularScience_19221101_0101_005_0140.xml
article
66
66
[no value]
[no value]
New Electrical and Mechanical Devices to Lighten Housework
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THE Editor will be glad to supply, whenever possible, the names and addresses of manufacturers of devices mentioned in this and other issues of Popular Science Monthly.
PopularScience_19221101_0101_005_0141.xml
article
67
67
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[no value]
Steel Fence Post Screws into the Ground
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MUCH of the drudgery of fencing has been eliminated by the invention of an auger-like steel post that screws into the ground and is locked firmly in position by a vertical plate attached to the post, working equally well in hard or soft ground.
PopularScience_19221101_0101_005_0142.xml
article
67
67
[no value]
[no value]
One Tank of Water Cleans Four Manholes
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THE work of cleaning sewer manholes is now greatly facilitated by a recently invented transportable apparatus, consistof a conical inclined tank, a force pump and a suction pipe, which will flush four manholes with 400 gallons of water—the amount usually required to clean one.
PopularScience_19221101_0101_005_0143.xml
article
67
67
[no value]
[no value]
Wheel Anchors Protect Autos in Transit
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BY USING newly designed curved steel blocks to hold the wheels of automobiles while in transit, manufacturers claim to have reduced loading and unloading costs, besides practically eliminating claims for damages after the machines have reached their destination.
PopularScience_19221101_0101_005_0144.xml
article
67
67
[no value]
[no value]
Shackled Cow Can’t Switch Her Tail, Nor Kick
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[no value]
WITH troublesome extremities securely shackled by a pair of steel cuffs, recently devised, the cow can’t switch her tail at milking time, nor kick over the milk bucket. The device consists of two clamps, one of which fits tightly around the gambrel cord just above the hock of one hind leg, the other around the tail near the tassel.
PopularScience_19221101_0101_005_0145.xml
article
68
68
[no value]
[no value]
Dump Trucks Climb Piles They Build
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IN THE course of a big road construction job, near Carbondale, III., a problem of accumulating large quantities of material in a limited space, was solved by the superintendent in charge by a novel method in which trucks, as they dumped their loads, formed their own roadbed on which they climbed as the height of a pile increased.
PopularScience_19221101_0101_005_0146.xml
article
68
68
[no value]
[no value]
Tone Amplifier Improves Stringed Instruments
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FOR the first time since the days of the great master builders of violins, an invention recently developed promises to bring a revolutionary improvement in the tonal qualities of any stringed instrument to which it is applied. The device, which takes the place of bass bar and soundpost, consists of a long wooden strip carefully fitted and glued to the inside of the top board of the instrument, directly underneath the G string.
PopularScience_19221101_0101_005_0147.xml
article
68
68
[no value]
[no value]
Blindfolded, He Assembles Typewriter in an Hour
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TO DEMONSTRATE his expert skill as a typewriter mechanic, F. R. Scroggins, of San Antonio, Tex., recently sat blindfolded at a table in a show window, with a typewriter before him, and dismantled the machine completely in 11 minutes and 15 seconds.
PopularScience_19221101_0101_005_0148.xml
article
68
68
[no value]
[no value]
Never Too Cold to Snow
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SCIENTIFICALLY speaking, it’s never "too cold to snow,” says S. K. Pearson, Jr., of the United States Weather Bureau. “We all know,” he tells us, “that it snows in parts of Canada and in our Northwest when the mercury registers far below zero.
PopularScience_19221101_0101_005_0149.xml
article
68
68
[no value]
[no value]
Beacons Built on Reefs Replace Old Towers
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NEW standard lighthouses, consisting of a superstructure of iron mounted on a solid concrete base that can be placed directly over a reef or other danger spot, are now supplanting stately towers of the the past—towers that, while they were picturesque, often were built miles away from the treacherous ledges they marked, and thus provided inadequate protection for shipping.
PopularScience_19221101_0101_005_0150.xml
article
69
69
[no value]
[no value]
This Farm Gate Is Always Open to Motorists
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FARM gates in certain sections of Florida are like railroad cattle guards, always open for an automobile or a man on horseback, but impassable to cattle or other animals with divided hoofs. The gate is made in the form of a grating of two-byfours, 2 ½ inches apart, with the earth dug away beneath.
PopularScience_19221101_0101_005_0151.xml
article
69
69
[no value]
[no value]
Autoist Opens Garage Door from His Seat
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WHEN Claire Briggs, the famous cartoonist, drives up to his garage at New Rochelle, N. Y., a pull on a handy chain outside the door opens the door for him without his moving from his seat. A chain suspended from a bracket extending 10 feet from the wall passes over a pair of pulleys to a sliding door.
PopularScience_19221101_0101_005_0152.xml
article
69
69
[no value]
[no value]
Wheelbarrow Heated for Winter Work
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AMONG the most useful recent additions to the equipment of a road repairing outfit, especially during the cold season, is a gasoline-heated wheelbarrow for handling bituminous road material. Supported on a frame of steel piping are two steel trays, one above the other.
PopularScience_19221101_0101_005_0153.xml
article
69
69
[no value]
[no value]
Cigarette Holder also Holds Ash Tray
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FOR the protection of rugs from the ashes that cigarette smokers are in the habit of dropping, a small aluminum attachment has been invented that may be clamped to any cigarette holder, and is so light that its weight is hardly noticeable to the person who is using it.
PopularScience_19221101_0101_005_0154.xml
article
69
69
[no value]
[no value]
How Sunken Steamer Was Floated by Cables from Shore
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BY MEANS of a series of hydraulic presses exerting force simultaneously through a multitude of cables, the 8000ton German steamship, Gneisenau, sunk on its side in the outer harbor at Antwerp, was pulled back into upright position recently and floated to drydock.
PopularScience_19221101_0101_005_0155.xml
article
70
70
[no value]
[no value]
Tractor Scraper Shaves Ice for Skaters in Chicago Parks
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ICE on the lakes in Chicago parks will be shaved smooth for skating this winter by a scraping machine of novel design, drawn by a small tractor. The machine, driven by a gasoline engine, is mounted on a Vshaped frame, attached to the tractor by a stiff bar bolted to the apex of the V.
PopularScience_19221101_0101_005_0156.xml
article
70
70
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[no value]
New Transmission Lock Safeguards Ford
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MAKING it impossible for a Ford to be started or moved under its own power, and yet permitting the car to be moved by hand in case of a fire or other emergency, a new transmission lock affords the protection against theft hitherto enjoyed only by owners of expensive cars.
PopularScience_19221101_0101_005_0157.xml
article
70
70
[no value]
[no value]
Warming Pad Heated by Chemicals
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CHEMICAL action, instead of hot water or electricity, warms a heating pad of recent invention. The heat is produced by adding a small quantity of cold water, not more than one ounce, to chemicals contained in a stout canvas bag, which is inclosed in an outer bag.
PopularScience_19221101_0101_005_0158.xml
article
70
70
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[no value]
First Aid Outfit Fastens to Car or Motor Boat
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FIRST aid outfits containing a selected assortment of medical supplies likely to be needed by the tourist and camper, can be purchased compactly arranged in a metal cylinder that is held rigidly in a bracket screwed to any convenient part of the automobile, motor boat, or camp wall.
PopularScience_19221101_0101_005_0159.xml
article
70
70
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Cattle Nose Prints, All Different, Identify Blooded Stock
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A SYSTEM of animal identification, evolved at the University of Minnesota under the direction of William E. Peterson, has shown in actual practice that nose prints of cows, calves, and bulls are as reliable for identification purposes as finger prints of human beings.
PopularScience_19221101_0101_005_0160.xml
article
71
71
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[no value]
Farmer-Sculptor Carves Statues from Hillside
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ALTHOUGH Daniel Brice Baughman, a farmer and undertaker of Black Run, Ohio, never has had a lesson in sculpture, he has chipped for more than 20 years at the limestone that he quarries out of the high hill upon which stands his home. Now, at the age of 45, he has laid out on this hill a memorial park, dedicated to great Americans and the veterans of our wars.
PopularScience_19221101_0101_005_0161.xml
article
71
71
[no value]
[no value]
Automatic Welder “Sews” Metal Seams
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WITH an ingenious welding machine recently developed, metal parts are welded together automatically in curved or straight seams, in a manner closely resembling the sewing of a seam on a sewing machine. The welding machine has two torches—a preheating torch, which moves steadily over the center of the seam, bringing the metal nearly to the fusion point, and immediately following it a self-feeding welding torch that has a slightly circular motion.
PopularScience_19221101_0101_005_0162.xml
article
71
71
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Three-Inch Radio Set Has 25-Mile Range
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WITHOUT sacrificing clearness of tone and wave capacity, Frank L. Copeman, of New York City, has perfected a remarkably compact and neatly designed radio receiving set. By a patented method of multiple coil winding he has succeeded in confining the switch controlled tuning unit into a small space without destroying its selective qualities.
PopularScience_19221101_0101_005_0163.xml
article
71
71
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Shield Guards Shaver of Dictating Records
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TO PREVENT flying pieces of wax dictating machine cylinders, broken while being shaved, from injuring the operator, M. G. Hoyman, of Neenah, Wis., has invented a new safety guard. The guard is a plate glass shield that may be adjusted by means of two pivoted telescoping arms.
PopularScience_19221101_0101_005_0164.xml
article
72
72,73,74
[no value]
[no value]
How to Tune Up Your Car and Save Money
You’ll Have More Power and Better All Around Performance at Less Cost if You Learn These Lessons from the Race Driver
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[no value]
Harold F. Blanchard
IF YOUR car labors on the hills; if your engine lacks “pep” or your car lacks “kick;” if your gasoline bills are too high or your tire mileage too low; if you are getting too little fun out of your car at too great cost; or if it is not as reliable a business utility as you expected:
PopularScience_19221101_0101_005_0165.xml
article
73
73
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[no value]
Tests Reveal Power Losses in Tires
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THE statement of Harold F. Blanchard, in the accompanying article, that power consumption of a cord tire is less than that of a fabric tire, is interestingly corroborated by remarkable tire tests recently completed by the United States Bureau of Standards in its laboratory at Washington, D. C. In these tests, which conclusively demon strated that cords absorb a third less power than fabrics, the tires were subjected to friction in an ingenious machine (shown above) that duplicated normal road conditions.
PopularScience_19221101_0101_005_0166.xml
article
73
73
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[no value]
Five Secrets of Car Tuning that Add to Reserve Power
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PopularScience_19221101_0101_005_0167.xml
article
74
74
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[no value]
How to Keep Your Car at 100 Per Cent Efficiency
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TO PREVENT the door pocket—the handiest place to carry automobile tools—from tearing away from the wooden crosspiece that forms its base halfway up the door, fasten the pocket with a row of carpet tacks, spaced about an inch apart. The tack heads can be concealed by tapping them into the beading of upholsterer’s tape TWO spares are held on one tire carrier by a simple iron extension driven between the rim of first spare and tire carrier.
PopularScience_19221101_0101_005_0168.xml
article
74
74
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Know You Car
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HAVE you ever asked yourself just how thoroughly you know your car and its ways? Do you realize how much greater mileage you could get for the same cost if you gave your car something like the care that the racing driver gives his? The racing driver not only tunes up his engine to give a maximum power output, but he also adjusts each detail of his car, so that the amount of power that it absorbs is at a minimum.
PopularScience_19221101_0101_005_0169.xml
article
75
75
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[no value]
Novel Automobile Robe Unrolls like Window Shade
Ten Other Useful Inventions for Car Owners
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PopularScience_19221101_0101_005_0170.xml
article
76
76
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Primer Made for Less than a Dollar
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[no value]
[no value]
G. W. Greene
WITH the first cold mornings, the motor-car owner begins to feel the need of some kind of a priming device to assure the quick starting of his motor. Probably the best system is one that provides for injecting gasoline into the intake manifold as near the cylinder block as possible, and preferably it should be operated from the dash.
PopularScience_19221101_0101_005_0171.xml
article
76
76
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Asbestos Tape on Manifolds Conserves Heat in Winter
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RONALD L. PRINDLE
HEAT is the one necessary thing to turn raw gasoline into power. The illustration shown herewith explains a very simple aid to breaking up the fuel by wrapping both the inlet and exhaust manifolds with woven asbestos tape. This utilizes the waste heat of the exhaust pipe to heat fresh, cool, incoming gases.
PopularScience_19221101_0101_005_0172.xml
article
76
76
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[no value]
Raising Spark Plug Prevents Formation of Carbon
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[no value]
EARL E. MOORE
GO TO any hardware store or plumbing shop and buy ½-in. male and ½in. female fittings. Put on plenty of shellac and screw in top of the cylinders in place of the spark plugs, then shellac your plugs and screw in the fittings. This raises the plugs in the fittings and protects them from the splash of the oil and the carbon from gasoline.
PopularScience_19221101_0101_005_0173.xml
article
76
76
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[no value]
To Insure a Reserve Supply of Gasoline
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HENRY S. LARABY
YOU will not be caught without gasoline if you install the reserve device, illustrated at the right, in your auto or motor boat. The plug at the tank outlet must be large enough to take the ¼-in. holes for the seamless tubing. One tube extends into the tank about 3 or 4 in.
PopularScience_19221101_0101_005_0174.xml
article
76
76
[no value]
[no value]
Tool Made of Old Piston Ring Cleans Grooves
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[no value]
[no value]
H. F. B.
IN FITTING new rings to old pistons it is highly essential to clean the piston ring grooves of carbon and other accumulations. Otherwise, the new piston rings will not work properly because their freedom of movement will be restricted by the dirt in the grooves.
PopularScience_19221101_0101_005_0175.xml
article
76
76
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[no value]
Mirror Aids Night Repairs on the Automobile
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[no value]
L. G.
OFTEN when there is no trouble light at hand for making emergency automobile repairs at night, a mirror can be used in conjunction with the spotlight to illuminate practically any part of the car. The spotlight is focused on the mirror, by which the light is reflected to the spot where it is desired.
PopularScience_19221101_0101_005_0176.xml
article
76
76
[no value]
[no value]
File Marks Identify Spark Plug Leads
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[no value]
G. A. LUERS
ANY one who has been unfortunate enough to crank an engine on which the spark plug wires were misplaced, will appreciate the value of the suggestion that spark plug terminals should be marked to correspond with cylinders of the engine. This method is used by a Washington, D. C., tractor owner and is found advantageous because of the frequent necessity for changing and cleaning plugs.
PopularScience_19221101_0101_005_0177.xml
article
77
77,90,91,92
The Home Workshop
New and Useful Things to Make with Tools
How to Make a Tea Wagon at Half Store Prices
A Handsome Piece of Furniture for Your Home or a Useful Christmas Gift
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[no value]
EVERY woman who entertains, no matter how infrequently, wants one of those attractive tea wagons that are becoming increasingly popular in well furnished homes, serving often as informal luncheon tables. Not only are they ornamental, but they also save steps in carrying food from kitchen to dining room and in clearing the table after meals.
PopularScience_19221101_0101_005_0178.xml
article
78
78,100,101,102,103,104,105,106,107,108
The Home Workshop
New and Useful Things to Make with Tools
How You Can Improve Your Home Heating Plant
Cut Coal Bills by Better Distribution and Conservation of Heat
[no value]
[no value]
James S. Godfrey
IN MANY ways the home worker can make improvements in his heating plant and his house that will repay themselves over and over again, both in the saving of coal and the increase of comfort during the winter. The installations and methods suggested below have been tried and tested and none of them is too difficult or costly to be undertaken by any man with a little ingenuity and a few of the ordinary tools that are or should be in every household.
PopularScience_19221101_0101_005_0179.xml
advertisement
79
79
[no value]
[no value]
PHILCO: Philco Drynamic Radio “B” Battery
[no value]
PHILCO
Philco Drynamic Radio “B” Battery
[no value]
[no value]
PopularScience_19221101_0101_005_0180.xml
article
80
80,82,84
Better Shop Methods
How Expert Mechanics Save Time and Labor
Shaper and Planer Attachment for the Lathe
Serves Many Purposes of Large Shaper at a Fraction of the Cost
[no value]
[no value]
B. R. Wicks
MACHINE shops, tool rooms, and automobile repair shops will find the shaper attachment illustrated a valuable addition to the engine lathe. With its aid, shaping and planing operations of many kinds can be performed; slots, keyways, and splines can be cut, taps and reamers grooved, and all sorts of irregular, angular shapes machined.
PopularScience_19221101_0101_005_0181.xml
advertisement
81
81
[no value]
[no value]
Advertisements
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PACENT ELECTRIC COMPANY
PACENT Radio Jack
PACENT ELECTRIC COMPANY
PACENT Twinadapter
[no value]
[no value]
PopularScience_19221101_0101_005_0182.xml
advertisement
83
83
[no value]
[no value]
THE A. C. GILBERT COMPANY
[no value]
THE A. C. GILBERT COMPANY
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[no value]
PopularScience_19221101_0101_005_0183.xml
advertisement
84
84
[no value]
[no value]
Diamond State Fibre Company
[no value]
Diamond State Fibre Company
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0184.xml
advertisement
84
84
[no value]
[no value]
E. C. ATKINS & CO., Inc.: ATKINS SILVER STEEL SAWS
[no value]
E. C. ATKINS & CO., Inc.
ATKINS SILVER STEEL SAWS
[no value]
[no value]
PopularScience_19221101_0101_005_0185.xml
article
84
84
[no value]
[no value]
How to Reproduce a Steel Stamp or Numbering Stencil
[no value]
[no value]
[no value]
M. B. K.
HARDENED steel numerals or stencils, such as are used for marking metal parts, can be preserved in die form so that duplicate punches can readily be made in case of the breakage or loss of the original. The figure, letter, or mark is embedded in the surface of a block of tool steel that previously has been annealed.
PopularScience_19221101_0101_005_0186.xml
advertisement
85
85
[no value]
[no value]
The Rudolph Wurlitzer Co.
[no value]
The Rudolph Wurlitzer Co.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0187.xml
advertisement
86
86
[no value]
[no value]
REMINGTON TYPEWRITER COMPANY
[no value]
REMINGTON TYPEWRITER COMPANY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0188.xml
article
86
86
BETTER SHOP METHODS
[no value]
Keeping Up to the Minute on Shop Methods
[no value]
[no value]
[no value]
J.V.R.
WHILE going through a large industrial plant I was deeply interested in the planning department. In it was a young man who, seated at a table before a pile of magazines, was making vigorous use of a pair of scissors, a roll of adhesive paper, and a box of wax crayons.
PopularScience_19221101_0101_005_0189.xml
article
86
86
BETTER SHOP METHODS
[no value]
Jig for Cotter-Pin Holes Has Adjustable Stop
[no value]
[no value]
[no value]
H. F. B.
TO MAKE a jig for drilling cotter-pin holes in screws and bolts, take a block of steel, bore it almost through, and fit a stop screw so that the work can be inserted exactly the right distance. By boring holes of different diameters in one block, the one jig will serve for drilling cotter-pin holes in machine screws and bolts of several standard sizes.
PopularScience_19221101_0101_005_0190.xml
article
86
86
BETTER SHOP METHODS
[no value]
Making a Center Tester for Tool and Die Work
[no value]
[no value]
[no value]
H. BERG.
THIS center tester is one I made for myself and use right along on tool and die work in the shop. The dimensions given may not suit every mechanic, but they can, of course, be varied to suit the individual judgment. On fine work an indicator may be used with the tester.
PopularScience_19221101_0101_005_0191.xml
advertisement
87
87
[no value]
[no value]
MECCANO COMPANY, Inc.
[no value]
MECCANO COMPANY, Inc.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0192.xml
advertisement
88
88
[no value]
[no value]
COTO-COIL CO.
[no value]
COTO-COIL CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0193.xml
article
88
88
BETTER SHOP METHODS
[no value]
Holding Nine Pieces Instead of One in Hacksaw Vise
[no value]
[no value]
[no value]
[no value]
WE HAD considerable 1 15/16-in. cold rolled steel bars to saw into lengths on the power hacksaw, and in the beginning put only one piece at a time in the machine vise. This meant we were almost continuously opening and closing the vise and had to keep a man on this job alone.
PopularScience_19221101_0101_005_0194.xml
article
88
88
BETTER SHOP METHODS
[no value]
Replacing a Defective Shaft
[no value]
[no value]
[no value]
H. J.
A SHAFT connected with an ordinary shaft coupling was found to have a fracture, as illustrated at A. We had to make a speedy repair in order to keep the machinery running, so we removed one half of the coupling and cut off the defective part of the shaft.
PopularScience_19221101_0101_005_0195.xml
article
88
88
BETTER SHOP METHODS
[no value]
Chiseling Off Rivet Heads
[no value]
[no value]
[no value]
G. L.
TO PREVENT elongating rivet holes in thin metal plates when rivets are removed, it is well to back up each rivet with a crowbar while it is being cut off with a cold chisel. The crowbar relieves the pressure of the rivets against the plates, and there is then no necessity for redrilling the holes when the plates are reassembled.
PopularScience_19221101_0101_005_0196.xml
article
89
89
BETTER SHOP METHODS
[no value]
Key Pins New Teeth in Place on Broken Gear
[no value]
[no value]
[no value]
J. H. T.
IN THIS method of repairing broken teeth in a gear or on the rim of an automobile flywheel, a stud made of cold rolled steel is first inserted, as shown. The diameter of the head of the stud should be nearly the width of the other teeth. The threaded end should be about one half that diameter.
PopularScience_19221101_0101_005_0197.xml
article
89
89
[no value]
[no value]
Filing Awkward Shaped Pieces
[no value]
[no value]
[no value]
J. F. H.
HAVE you ever tried to file an awkward shaped piece or part that came almost level with the top of the vise? If you have, then, no doubt, you bruised your knuckles just as the writer did until he made the little file holder illustrated. A groove is made to fit snugly over the tang of the file, and the handle, being above the level of the file, allows you to work without danger of bumping your knuckles.
PopularScience_19221101_0101_005_0198.xml
article
89
89
[no value]
[no value]
Drilling Cement and Brick
[no value]
[no value]
[no value]
[no value]
A HANDY tool for drilling holes in brick walls, which the writer has found more effective than the old-fashioned star brick drill, is made by shaping one end of a piece of octagon steel of the desired size and length to a fishtail bit. Point the other end to fit the chuck of an ordinary brace, and then temper the tool.
PopularScience_19221101_0101_005_0199.xml
advertisement
89
89
[no value]
[no value]
THE LIONEL CORPORATION
[no value]
THE LIONEL CORPORATION
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0200.xml
advertisement
90
90
[no value]
[no value]
S. C. JOHNSON & SON
[no value]
S. C. JOHNSON & SON
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0201.xml
advertisement
91
91
[no value]
[no value]
SOUTHERN CYPRESS MFR'S. ASSN.
[no value]
SOUTHERN CYPRESS MFR'S. ASSN.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0202.xml
advertisement
92
92
[no value]
[no value]
THE FLORSHEIM SHOE COMPANY
[no value]
THE FLORSHEIM SHOE COMPANY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0203.xml
advertisement
92
92
[no value]
[no value]
JEWETT MANUFACTURING CORP.
[no value]
JEWETT MANUFACTURING CORP.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0204.xml
article
92
92
THE HOME WORKSHOP
[no value]
“Best Ideas” of Readers Win Home Workshop Prizes
[no value]
[no value]
[no value]
[no value]
A FIRST prize of $15 and a second prize of $10 are awarded each month for the best ideas published in the Home Workshop Department. These prizes are given in addition to the regular rates paid for contributions and are, therefore, a bonus for especially good suggestions.
PopularScience_19221101_0101_005_0205.xml
article
93
93
THE HOME WORKSHOP
[no value]
Drill Block Prevents Breakage of Small Hand Taps
[no value]
[no value]
[no value]
[no value]
TO TAP a small hole in a piece of metal held in a vise without breaking the tap or cutting the thread out of square requires much skill and care. When the tap reaches the bottom of the hole, the resistance is hardly felt and yet the smallest fraction of a turn often breaks the tap.
PopularScience_19221101_0101_005_0206.xml
article
93
93
THE HOME WORKSHOP
[no value]
Steel Square and Plumb Bob Form Serviceable Level
[no value]
[no value]
[no value]
[no value]
A SERVICEABLE and unbreakable level can be made with a steel square, a plumb bob, and a piece of hardwood. Saw a long notch in one end of the stick and a short notch in the other end and bore a hole through at the long notch. Insert a bolt with a wingnut to clamp the bar to the square, as shown.
PopularScience_19221101_0101_005_0207.xml
article
93
93
THE HOME WORKSHOP
[no value]
Carrying Large Sheets of Glass, Veneer, or Cardboard
[no value]
[no value]
[no value]
[no value]
TO CARRY sheets of glass, veneer, cardboard, and other flat, unwieldy objects, make a light-weight wooden rack as shown. A series of cross pieces afford a choice of hand grips; they make it unnecessary to strain the arm down to the bottom of the sheets.
PopularScience_19221101_0101_005_0208.xml
advertisement
93
93
[no value]
[no value]
G. P. PUTNAM’S SONS
[no value]
G. P. PUTNAM’S SONS
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0209.xml
advertisement
94
94
[no value]
[no value]
Electrical Research Laboratories: ERLA
[no value]
Electrical Research Laboratories
ERLA
[no value]
[no value]
PopularScience_19221101_0101_005_0210.xml
advertisement
94
94
[no value]
[no value]
MANHATTAN ELECTRICAL SUPPLY CO.,INC.
[no value]
MANHATTAN ELECTRICAL SUPPLY CO.,INC.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0211.xml
article
95
95
THE HOME WORKSHOP
[no value]
Brackets Support Vacuum Tube Platform in Radio Cabinet
[no value]
[no value]
[no value]
CHARLES F. LANOUETTE
A NEAT and inexpensive method of mounting a platform for vacuum tubes in a radio cabinet is to support it from brackets on the panel and the back of the cabinet, as illustrated. This has an advantage over the usual U-shaped support because of the ease with which soldered connections may be made between rheostats and other parts below the platform that often are difficult to get at.
PopularScience_19221101_0101_005_0212.xml
article
95
95
THE HOME WORKSHOP
[no value]
Nail Forms Handle for Cork
[no value]
[no value]
[no value]
J. M. PIPP
CORKS in varnish cans and other containers often fit flush and are very difficult to remove. This is particularly annoying when small quantities of the liquid contained in the can are required at frequent intervals. One of the simplest methods of providing a handle for the drawing of such corks is to drive a wire nail through the cork from the under side and bend the point at an angle to give a finger grip.
PopularScience_19221101_0101_005_0213.xml
article
95
95
THE HOME WORKSHOP
[no value]
Removing Rust from Nickel Plate
[no value]
[no value]
[no value]
[no value]
RUST spots on nickel surfaces may be removed by rubbing the parts thoroughly with hard oil or vaseline. Allow oil to remain for several days if possible; then wipe clean with a cloth soaked in ammonia. If the spots do not yield to this treatment, add several drops of hydrochloric acid to the ammonia.
PopularScience_19221101_0101_005_0214.xml
advertisement
95
95
[no value]
[no value]
Master Radio Corporation
[no value]
Master Radio Corporation
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0215.xml
advertisement
96
96
[no value]
[no value]
THE L. S. STARRETT CO.
[no value]
THE L. S. STARRETT CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0216.xml
advertisement
96
96
[no value]
[no value]
BAUSCH & LOMB OPTICAL COMPANY
[no value]
BAUSCH & LOMB OPTICAL COMPANY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0217.xml
article
96
96
THE HOME WORKSHOP
[no value]
Antenna, for Use in Towns, Attaches to Clothes Line
[no value]
[no value]
[no value]
[no value]
RADIO fans who live in upper apartments or flats where old-fashioned pulley clothes lines are used, can install an aerial with very little difficulty. The first step is to obtain a large, empty wooden reel and make a bracket for it, so that it can be fastened to the window or back porch near the clothes line.
PopularScience_19221101_0101_005_0218.xml
article
96
96
THE HOME WORKSHOP
[no value]
Light Bench Clamp Useful in Holding Radio Parts
[no value]
[no value]
[no value]
[no value]
SMALL work on radio apparatus and electrical instruments often can readily be handled in a bench clamp made as shown, from materials to be found in most scrap boxes. The body of the clamp is a piece of flat steel, about 3/16 in. thick, 2 in. wide, and 12 in. long.
PopularScience_19221101_0101_005_0219.xml
advertisement
97
97
[no value]
[no value]
GOODELL-PRATT COMPANY
[no value]
GOODELL-PRATT COMPANY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0220.xml
advertisement
98
98
[no value]
[no value]
BROWN & SHARPE MFG. CO.
[no value]
BROWN & SHARPE MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0221.xml
advertisement
98
98
[no value]
[no value]
The Monarch Machine Tool Co.
[no value]
The Monarch Machine Tool Co.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0222.xml
advertisement
98
98
[no value]
[no value]
INTERNATIONAL BODY WORKS
[no value]
INTERNATIONAL BODY WORKS
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0223.xml
advertisement
98
98
[no value]
[no value]
ROYAL DIAMOND & WATCH CO.
[no value]
ROYAL DIAMOND & WATCH CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0224.xml
article
99
99
[no value]
[no value]
Christmas Gifts You Can Make Yourself
[no value]
[no value]
[no value]
[no value]
METHODS of making unusual Christmas gifts will be featured in the Home Workshop next month. There will be articles on making toys —an electric train, a kiddie broncho, a doll’s house, a toy automobile, a “sledan,” and other fascinating novelties prepared especially for POPULAR SCIENCE MONTHLY by some of the best toy designers in the country.
PopularScience_19221101_0101_005_0225.xml
advertisement
99
99
[no value]
[no value]
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
[no value]
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0226.xml
advertisement
99
99
[no value]
[no value]
HOBART BROTHERS COMPANY
[no value]
HOBART BROTHERS COMPANY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0227.xml
advertisement
99
99
[no value]
[no value]
Gilson Slide Rule Co.
[no value]
Gilson Slide Rule Co.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0228.xml
advertisement
99
99
[no value]
[no value]
SOUTH BEND LATHE WORKS
[no value]
SOUTH BEND LATHE WORKS
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0229.xml
advertisement
100
100
[no value]
[no value]
SMITH & HEMENWAY CO., Inc.
[no value]
SMITH & HEMENWAY CO., Inc.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0230.xml
advertisement
100
100
[no value]
[no value]
THE NEVERSLIP WORKS
[no value]
THE NEVERSLIP WORKS
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0231.xml
advertisement
101
101
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0232.xml
advertisement
102
102
[no value]
[no value]
The Veeder Mfg. Co.: Veeder COUNTER
[no value]
The Veeder Mfg. Co.
Veeder COUNTER
[no value]
[no value]
PopularScience_19221101_0101_005_0233.xml
advertisement
102
102
[no value]
[no value]
Harold Lachman Co.
[no value]
Harold Lachman Co.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0234.xml
advertisement
102
102
[no value]
[no value]
THE FUERST-FRIEDMAN COMPANY
[no value]
THE FUERST-FRIEDMAN COMPANY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0235.xml
advertisement
102
102
[no value]
[no value]
Reversible Collar Co.
[no value]
Reversible Collar Co.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0236.xml
advertisement
103
103
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0237.xml
article
104
104
[no value]
[no value]
Does this smoker know what he’s talking about?
He says the best pipe of the day is the first one
[no value]
[no value]
[no value]
A smoker from Zanesville, Ohio, who prefers to conceal his identity under the initials “A.K.K.,” insists that the afterbreakfast pipe is far and away the best pipe of the day. “Of course,” writes A.K.K., “it depends somewhat on the breakfast.
PopularScience_19221101_0101_005_0238.xml
advertisement
104
104
[no value]
[no value]
ACME
[no value]
ACME
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0239.xml
advertisement
105
105
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0240.xml
advertisement
106
106
[no value]
[no value]
The Automatic Electrical Devices Co.
[no value]
The Automatic Electrical Devices Co.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0241.xml
advertisement
106
106
[no value]
[no value]
MEYER BOTH COLLEGE OF COMMERCIAL ART
[no value]
MEYER BOTH COLLEGE OF COMMERCIAL ART
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0242.xml
advertisement
106
106
[no value]
[no value]
ARTHUR MURRAY
[no value]
ARTHUR MURRAY
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0243.xml
advertisement
106
106
[no value]
[no value]
INTERNATIONAL TYPEWRITER EXCHANGE
[no value]
INTERNATIONAL TYPEWRITER EXCHANGE
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0244.xml
advertisement
107
107
[no value]
[no value]
THE C. D. TUSKA COMPANY: TUSKA RADIO
[no value]
THE C. D. TUSKA COMPANY
TUSKA RADIO
[no value]
[no value]
PopularScience_19221101_0101_005_0245.xml
advertisement
107
107
[no value]
[no value]
NORTHWESTERN ELECTRIC CO.
[no value]
NORTHWESTERN ELECTRIC CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0246.xml
advertisement
108
108
[no value]
[no value]
Advertisements
[no value]
COLUMBIA RADIO CORPORATION
Columbia Moulded Variometer
COLUMBIA RADIO CORPORATION
Moulded Variocoupler
[no value]
[no value]
PopularScience_19221101_0101_005_0247.xml
advertisement
108
108
[no value]
[no value]
BUESCHER BAND INSTRUMENT CO.
[no value]
BUESCHER BAND INSTRUMENT CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0248.xml
article
109
109,110,111
THE HOME WORKSHOP
[no value]
Easily Made Hygrometer Will Measure Humidity in Air
[no value]
[no value]
[no value]
Capt. E. A. McCann
ONE of the secrets of heating a house economically and efficiently and keeping it comfortable through the winter months is to provide a sufficient amount of moisture for the air. If the humidity is right, a temperature of 65 or 67 degrees will feel as warm as a temperature of 70 degrees or more when the air is dry.
PopularScience_19221101_0101_005_0249.xml
advertisement
109
109
[no value]
[no value]
The DICTOGRAPH PRODUCTS CORPORATION
[no value]
The DICTOGRAPH PRODUCTS CORPORATION
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0250.xml
advertisement
109
109
[no value]
[no value]
TRIBUNE AIRFONE CO.
[no value]
TRIBUNE AIRFONE CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0251.xml
advertisement
109
109
[no value]
[no value]
HYRE ELECTRIC CO.
[no value]
HYRE ELECTRIC CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0252.xml
advertisement
109
109
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0253.xml
advertisement
110
110
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0254.xml
article
111
111
THE HOME WORKSHOP
[no value]
How to Fasten a Bolt in End of Pipe or Radio Mast
[no value]
[no value]
[no value]
[no value]
ON MANY occasions it is necessary to make a fastening at the end of a pipe in connection with a wireless mast, awning work, hand rail attachments, framing, and the like. To hold a bolt in the open end of a pipe and leave the end portion protruding is easily accomplished in such cases if the method illustrated is followed.
PopularScience_19221101_0101_005_0255.xml
advertisement
111
111
[no value]
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0256.xml
advertisement
111
111
[no value]
[no value]
KEEN KUTTER
[no value]
KEEN KUTTER
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0257.xml
advertisement
111
111
[no value]
[no value]
Burlington Watch Co.
[no value]
Burlington Watch Co.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0258.xml
advertisement
112
112
[no value]
[no value]
University of Applied Science
[no value]
University of Applied Science
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0259.xml
advertisement
112
112
[no value]
[no value]
C. G. Conn, Ltd.
[no value]
C. G. Conn, Ltd.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0260.xml
advertisement
112
112
[no value]
[no value]
WM. J. MURDOCK CO.
[no value]
WM. J. MURDOCK CO.
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0261.xml
advertisement
112
112
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19221101_0101_005_0262.xml
article
112
112
THE HOME WORKSHOP
[no value]
Easily Made Wooden Flower Box Has Water Reservoir
[no value]
[no value]
[no value]
P. S. HALLECK
HOUSE plants flourish in the wooden flower box illustrated, which has a self-contained reservoir for water. The water is poured down the tube shown in the upper right-hand corner of the photograph, and rises from the bottom up into the soil.
PopularScience_19221101_0101_005_0263.xml
article
112
112
THE HOME WORKSHOP
[no value]
Old Wooden Bed Is Cut Down to Make a Settee
[no value]
[no value]
[no value]
E. W.
IF YOU have an old wooden bed stored away in the attic, it probably can be made into a useful and attractive settee. Finishing nails and about six 3-in. screws were all the additional materials needed to make the settee illustrated, and the tools required were a saw, a hammer, and a screwdriver.
PopularScience_19221101_0101_005_0264.xml
article
113
113
THE HOME WORKSHOP
[no value]
Discarded Picture Frames Make Attractive Serving Trays
[no value]
[no value]
[no value]
[no value]
OLD picture frames can be converted without much difficulty into substantial and attractive serving trays. In most attics there are old pictures with elaborately molded frames that have been put aside because either the picture or the frame has become old-fashioned.
PopularScience_19221101_0101_005_0265.xml
article
113
113
THE HOME WORKSHOP
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Brush Fastened to Soldering Can
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H. B.
WHEN a number of parts have to be brushed with soldering fluid, it is a good idea to combine a brush with the container. This can be done by fitting a piece of tubing into the top of a can that has a screw cap, and placing the brush inside the tube. The end of the tube should be flattened slightly to hold the brush securely.
PopularScience_19221101_0101_005_0266.xml
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113
113
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VICTOR J. EVANS & CO.
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VICTOR J. EVANS & CO.
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PopularScience_19221101_0101_005_0267.xml
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114
114
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Advertisements
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PopularScience_19221101_0101_005_0268.xml
article
114
114
THE HOME WORKSHOP
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Adapting a Farm Gate to Suit a Depressed Road
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Louis SCHNEIDER
AN ANNOYING feature of roads under farmyard gates is that the road will wear down and soon leave a space beneath the gate through which the smaller animals will find their way. Here is the way in which one farmer solved the problem. He hinged an auxiliary gate underneath the main gate in such a manner that when the gate was opened and swung back against the bank of the road, the lower gate swung up, returning to position of itself when the gate was again closed.
PopularScience_19221101_0101_005_0269.xml
article
114
114
THE HOME WORKSHOP
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Spring and Tube Used to Re-Tire Baby Carriage Wheels
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MRS. E. K.
WHEN a baby-buggy tire wears out, often it is found difficult to secure and to put on a new one. The following method will be found very simple, cheap and practical, and anybody with ordinary mechanical ability can utilize it with ease. Obtain heavy rubber tubing long enough to fit around the rim of the wheel, and steel wire spring long enough to fit the rim when the spring is stretched about two inches.
PopularScience_19221101_0101_005_0270.xml
article
115
115
THE HOME WORKSHOP
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Razor Blade Utilized as Cabinet Scraper for Fine Work
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A HANDY and useful scraper for cabinet work can be made by inserting a safety razor blade in a wooden holder, as shown. The opening in the handle, which is a piece of soft wood, is cut on a scroll-saw or in any convenient manner, and a piece is also removed from the back to allow the shavings to escape.
PopularScience_19221101_0101_005_0271.xml
article
115
115
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Adjustable Socket Wrench Made with Old Bit Brace
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S. W.
IF YOU happen to have an old bit brace that has outlived its usefulness, you can convert it into an adjustable socket wrench. Saw off the chuck and heat and flatten the end so that you can attach to it a small monkey-wrench from which the handle has been removed and the shank cut down.
PopularScience_19221101_0101_005_0272.xml
article
115
115
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Stop Holds Garage Doors Open
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THE stop illustrated will eliminate the danger of garage doors being blown against the car while entering or leaving the garage. A ½-in. round steel rod bent into a hook at one end and sharpened to a point at the other is held in place on the inside of the doors by two staples or ½-in. pipe cleats.
PopularScience_19221101_0101_005_0273.xml
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115
115
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Advertisements
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PopularScience_19221101_0101_005_0274.xml
advertisement
116
116
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Advertisements
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PopularScience_19221101_0101_005_0275.xml
article
116
116
THE HOME WORKSHOP
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Homemade Combination Locks Small Desk or Wall Safe
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THIS simple combination lock is one I made for a small wall safe for the safe keeping of stamps, coins and jewelry, although obviously it could be used for other purposes. The lock proper consists of only three parts, A, B, and C. Part B fits over C and A fits on top of B. Part B must turn freely after A is riveted to C. The slots 3 and 4 must be in line with the pins 1 and 2 before the lock can be opened.
PopularScience_19221101_0101_005_0276.xml
article
116
116
THE HOME WORKSHOP
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Clothes Horse Quickly Made
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MANY are the days that washings cannot be hung out of doors, yet the drying of clothes indoors is always a problem. Some use lines, some driers that can be bought; we have tried both, but my wife likes this homemade clothes horse best of all. It takes up little room when not in use and yet holds a number of clothes.
PopularScience_19221101_0101_005_0277.xml
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117
117
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Advertisements
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PopularScience_19221101_0101_005_0278.xml
article
117
117
THE HOME WORKSHOP
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Ford Axle Housing Forms a Cheap Portable Forge
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G. F.
ONE half of an old Ford axle housing, which can be obtained at little cost from an automobile junk dealer, can be used for building a small portable forge that will serve many uses in the home workshop, garage, or small machine shop. The housing is cut off so as not to be of unwieldy length, and fire clay and tin are used to stop up the ends.
PopularScience_19221101_0101_005_0279.xml
article
117
117
THE HOME WORKSHOP
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Sharpening Shears with a Needle
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JOHN A. GESSLER
THE sharpener for shears illustrated below was made with nothing more than a small piece of sheet copper, a darning needle, some thread, and a drop of shellac. The copper, ¾ by 2¾ in., was bent up ½ in. from one end. The thread was wrapped around the middle of the needle, which was placed in the bend and fastened with a touch of shellac.
PopularScience_19221101_0101_005_0280.xml
article
117
117
THE HOME WORKSHOP
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Screw-Eyes as Shelf Supports in Music Cabinet
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G. C.
ONE of my students who was making a music cabinet found that none of the local hardware stores had regular shelf supports in stock. I therefore suggested putting in the three shelves with screweyes. Three were placed on each side of each shelf.
PopularScience_19221101_0101_005_0281.xml
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118
118
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Advertisements
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PopularScience_19221101_0101_005_0282.xml
article
118
118
THE HOME WORKSHOP
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Hot-Air Propeller Operates Novel Pecking Bird
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F. H. L.
THE mechanism of this little novelty consists of two parts, a pecking bird and a propeller driven by hot air from any radiator or stove. The base is ¼ in. thick and 6 in. square, with a round hole in the center 4 in. in diameter. The bird is cut from a printed picture and mounted on cardboard, or is drawn directly on cardboard.
PopularScience_19221101_0101_005_0283.xml
article
118
118
THE HOME WORKSHOP
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Uses for Shotgun Shells
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J. Y. R.
EMPTY shotgun shells should not be thrown away, because they are most useful as containers for small articles. They can be corked like bottles and stored away compactly in drawers or boxes. The home worker can arrange a rack for the shells in which to keep small screws, drills, taps, and reamers.
PopularScience_19221101_0101_005_0284.xml
article
119
119
THE HOME WORKSHOP
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A Barrel Form Used in Making a Concrete Cesspool
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G. A. LUERS
A CESSPOOL for sewage disposal may be built with little more than two bags of cement and a large wooden barrel. A hole about 6 ft. deep is dug in the ground and then filled in loosely with rock and brick for a depth of 2 ft. The barrel is cut out at the place where the drain is to enter and is placed in an inverted position on the loose rock.
PopularScience_19221101_0101_005_0285.xml
article
119
119
THE HOME WORKSHOP
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Tray for Sorting Small Parts
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D. W. CLARK
THIS tray will save much time in sorting the usual miscellaneous lot of nuts, bolts, screws, washers, and other small parts and fittings kept together in boxes or tins in the home workshop. Place the sliding plate under the hole, dump the “junk” into the tray, spread out the parts, and you will be able to find what you are looking for in no time.
PopularScience_19221101_0101_005_0286.xml
article
119
119
THE HOME WORKSHOP
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“Shielding” Your Radio Set
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W. J. T.
SOMETIMES when adjusting the knobs and dials of sensitive, closely regulated outfits the signals will die down as soon as the hand is removed. This is due to the capacity effect of the body. To get around it, cover the back side of the panel with tin foil or sheet copper, using care to see that the metal does not touch contacts, rods or wires.
PopularScience_19221101_0101_005_0287.xml
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119
119
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Radio Institute of America
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Radio Institute of America
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PopularScience_19221101_0101_005_0288.xml
advertisement
119
119
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Harley-Davidson Motor Co.
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Harley-Davidson Motor Co.
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PopularScience_19221101_0101_005_0289.xml
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119
119
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Automatic Electric Company
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Automatic Electric Company
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PopularScience_19221101_0101_005_0290.xml
advertisement
120
120
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Advertisements
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PopularScience_19221101_0101_005_0291.xml
article
120
120
THE HOME WORKSHOP
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How to Make Permanent Baskets of Sea Moss
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E. B.
DAINTY basket plants resembling fluffy tropical vegetation may be made by placing “sea moss” in a large snail shell. This so-called sea moss is not related to the vegetable kingdom, but is a colony of animals, the hydroid polyps, scientifically known as Hydroidea.
PopularScience_19221101_0101_005_0292.xml
article
120
120
THE HOME WORKSHOP
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Old Vacuum Cleaner Serves as Suction Fan for Small Shop
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HARRY J. MORRIS
A SUCTION fan, for use in connection with a grinder and buffer, may be constructed from an old vacuum cleaner. One of these may be obtained usually from any firm dealing in vacuum cleaners, since they take old ones in part payment for new cleaners and, as the old ones are antiquated and of little value for the work they were intended to do,they often can be had for $10 or $12, which is about the value of the small second-hand motor they contain.
PopularScience_19221101_0101_005_0293.xml
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121
121
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Advertisements
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PopularScience_19221101_0101_005_0294.xml
article
121
121
THE HOME WORKSHOP
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Hinged Dripboard Provides Extra Space at Kitchen Sink
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WILLIAM H. DECK
TO PROVIDE additional working space at the kitchen sink, I constructed a hinged dripboard as shown. The board was a piece of ⅞ by 15 by 28 in. dressed California pine, to which were attached strips of ⅜ by 2 in. molding. The seams were calked on the inside with a mixture of litharge and enough distilled linseed oil to make a putty.
PopularScience_19221101_0101_005_0295.xml
article
121
121
THE HOME WORKSHOP
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Gaspipe Forms Ornamental Reading or Piano Lamp
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PAUL W. TRIER
OLD gaspipe and a little strap iron and brass can be worked up into a practical and good looking reading or piano lamp at a cost of next to nothing. The stand should be of either ⅜-or-½ in. pipe. On top of the stand is screwed a tee, reducing to ⅛ in. The arm is bent from J4-in.
PopularScience_19221101_0101_005_0296.xml
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122
122
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PopularScience_19221101_0101_005_0297.xml
article
122
122
THE HOME WORKSHOP
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Auto and Phonograph Horns Combined in Loudspeaker
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John A. Mahon
A LOUDSPEAKER I made for myself out of an old auto horn and a portion of a phonograph horn has given exceptional satisfaction. The volume of sound it produces easily fills a whole apartment, and it is absolutely devoid of rasping, mechanical noises.
PopularScience_19221101_0101_005_0298.xml
article
122
122
THE HOME WORKSHOP
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Ladder Hooks for Roofing Work
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S. L. D.
IN ORDER to use a short ladder in making roof repairs, a mechanic made two hooks simply by nailing horseshoes to the upper ends of the ladder and bending the irons open. These hook over the ridge of the roof and hold the ladder se-. curely.
PopularScience_19221101_0101_005_0299.xml
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123
123
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Advertisements
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PopularScience_19221101_0101_005_0300.xml
article
123
123
THE HOME WORKSHOP
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Making a Projector for Picture Postal Cards and Photos
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Harry L. Gray
A POSTAL-CARD projector will provide an unlimited source of evening entertainment. The construction of the apparatus is not difficult if electric current is available. Two bulbs, preferably 75watt, will be needed, as well as two readingglasses.
PopularScience_19221101_0101_005_0301.xml
article
123
123
THE HOME WORKSHOP
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To Remove a Broken Ax Handle
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W. M. SCHMIDT
GOOD way to remove a broken ax handle from the eye of the blade is to saw off the wood even with the blade and drill a hole through the piece that remains incased within the steel. Next, make four cuts with a hacksaw, quartering the wood so that the four pieces can be driven out easily.
PopularScience_19221101_0101_005_0302.xml
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124
124
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PopularScience_19221101_0101_005_0303.xml
article
124
124
THE HOME WORKSHOP
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Screw Fastens Steel Wedge Permanently in Handle
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R. H. Y.
THE accompanying illustration shows an effective method of permanently securing the wedge in the handle of a carpenter's or machinist’s hammer, so that neither jarring nor the shrinking of the wood will cause the handle to come out of the eye of the hammer.
PopularScience_19221101_0101_005_0304.xml
article
124
124
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Hand Twister for Stretching Wire
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G. A.
STRETCHING fence wire is an easy matter with a tool such as is illustrated, which is simply a tee made of short lengths of 1-in. pipe. This tool is used by a Maryland farmer for practically all his fence work. The end of the wire to be stretched is passed through a staple to guide it and into a small hole in the stem of the tee, then being twisted about the pipe.
PopularScience_19221101_0101_005_0305.xml
article
124
124
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Strong Hinges for Garage Doors
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S. L.
THIS simple form of hinge was made especially for hanging a heavy garage door. It was forged by heating two lengths of bar stock, and twisting them around each other. The ends were then flattened and drilled for bolts. The construction is such that the weight of the door causes it to swing open when unlocked.
PopularScience_19221101_0101_005_0306.xml
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125
125
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Advertisements
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PopularScience_19221101_0101_005_0307.xml
article
125
125,126
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The Shipshape Home
How to Do the Odd Jobs
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QUITE often there will be a door in the house that is a “lame duck.” You try to close it and it will not close tightly; you try to open it and it sticks; and when your back is turned, it seems to swing open of its own accord. When you try to latch it, the plunger seems either too short to reach the striking plate or will not enter it.
PopularScience_19221101_0101_005_0308.xml
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126
126
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Advertisements
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PopularScience_19221101_0101_005_0309.xml
article
127
127
THE HOME WORKSHOP
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Miniature Radio Cabinet Has Slide Tuning Coil
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A MINIATURE radio receiving set of the loose coupler type was under construction in which the primary coil was 4 in. long and 1⅝ in. in diameter, wound with No. 28 wire. It was to be mounted in a little cabinet. Close tuning was desired, involving the taking off of a considerable number of taps.
PopularScience_19221101_0101_005_0310.xml
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127
127
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The Palmer SCHOOL OF CHIROPRACTIC
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The Palmer SCHOOL OF CHIROPRACTIC
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PopularScience_19221101_0101_005_0311.xml
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127
127
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Advertisement: Adjusto-Lite
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Adjusto-Lite
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PopularScience_19221101_0101_005_0312.xml
advertisement
127
127
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ANSONIA CLOCK COMPANY
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ANSONIA CLOCK COMPANY
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PopularScience_19221101_0101_005_0313.xml
advertisement
128
128
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THE ELECTRIC STORAGE BATTERY COMPANY: Exide BATTERUES
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THE ELECTRIC STORAGE BATTERY COMPANY
Exide BATTERUES
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PopularScience_19221101_0101_005_0314.xml
advertisement
129
129
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COLGATE & Co.
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COLGATE & Co.
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PopularScience_19221101_0101_005_0315.xml
advertisement
130
130
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Victor Talking Machine Company
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Victor Talking Machine Company
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PopularScience_19221101_0101_005_0316.xml