Issue: 19410701

Tuesday, July 1, 1941
JULY, 1941
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Tuesday, December 16, 2014

Articles
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POPULAR SCIENCE MONTHLY
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Advertisement
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PopularScience_19410701_0139_001_0003.xml
masthead
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POPULAR SCIENCE
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PopularScience_19410701_0139_001_0004.xml
tableOfContents
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CONTENTS for JULY, 1941
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PopularScience_19410701_0139_001_0005.xml
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3
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GENERAL MOTORS ACCEPTANCE CORPORATION
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GENERAL MOTORS ACCEPTANCE CORPORATION
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PopularScience_19410701_0139_001_0006.xml
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5
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Bell Telephone System
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Bell Telephone System
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PopularScience_19410701_0139_001_0007.xml
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6
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Champions
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Champions
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PopularScience_19410701_0139_001_0008.xml
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6
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CHAMPION SPARK PLUG CO.
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CHAMPION SPARK PLUG CO.
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PopularScience_19410701_0139_001_0009.xml
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7
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B. F. Goodrich
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B. F. Goodrich
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PopularScience_19410701_0139_001_0010.xml
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8
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MOBIL SPECIALTIES: MOBIL UPPERLUBE
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MOBIL SPECIALTIES
MOBIL UPPERLUBE
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PopularScience_19410701_0139_001_0011.xml
article
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Coming Next Month—
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THE EDITORS
DEFENSE is the watchword in America today. Millions of men and billions of dollars have been put to work to make our country secure. Vessels are sliding down the ways of our shipyards; planes and guns, tanks and shells are pouring off the production lines of our factories.
PopularScience_19410701_0139_001_0012.xml
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9
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19410701_0139_001_0013.xml
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10,11
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CHRYSLER CORPORATION
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CHRYSLER CORPORATION
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PopularScience_19410701_0139_001_0014.xml
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12
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Advertisement
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PopularScience_19410701_0139_001_0015.xml
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13
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GENERAL MOTORS
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GENERAL MOTORS
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PopularScience_19410701_0139_001_0016.xml
article
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14,16,18
Readers Say:
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Readers Say:
Another "Room for Bobby" Built from an Old Chest
Can Anybody Beat This Record for a Penny-Balloon Flight?
This Hits the Hypothetical Nail on the Hypothetical Head
Just Don't Leave the Pieces Lying Around the House
More Sartorial Suggestions for Dressy Lathe Operators
Reader Says Wright Is Wrong as Inventor of the Airplane
Those Venetian-Blind Slats Would Make Fine Yardsticks
His Barber Was a Sharper, So He Sharpened His Own
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WHEN Dr. M. J. Lossow, of the Bronx, New York City, read Clifford McBride’s article “I Build a Room for Bobby” in the March issue, he thought the idea of a nautical boy’s room was a clever one, and decided to try it himself. The photograph shows the result.
PopularScience_19410701_0139_001_0017.xml
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15
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LASALLE Extension University
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LASALLE Extension University
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PopularScience_19410701_0139_001_0018.xml
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16
16
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Sani-Flush
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Sani-Flush
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PopularScience_19410701_0139_001_0019.xml
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16
16
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SHERRILL RESEARCH CORPORATION
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SHERRILL RESEARCH CORPORATION
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PopularScience_19410701_0139_001_0020.xml
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17
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Advertisement: Popular Science
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Popular Science
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PopularScience_19410701_0139_001_0021.xml
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17
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UNDERWOOD ELLIOTT FISHER COMPANY
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UNDERWOOD ELLIOTT FISHER COMPANY
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PopularScience_19410701_0139_001_0022.xml
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18
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SMOOTH-ON MFG. CO.
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SMOOTH-ON MFG. CO.
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PopularScience_19410701_0139_001_0023.xml
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19
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Advertisements
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PopularScience_19410701_0139_001_0024.xml
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McGRAW-HILL BOOK CO.
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McGRAW-HILL BOOK CO.
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PopularScience_19410701_0139_001_0025.xml
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20
20
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AERO INDUSTRIES TECHNICAL INSTITUTE
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AERO INDUSTRIES TECHNICAL INSTITUTE
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PopularScience_19410701_0139_001_0026.xml
article
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20,22,24,26
With the Inventors
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With the Inventors
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ELECTROCUTING WHALES has been found an effective and humane way of killing them. Aboard the whaling boat, a powerful electric generator produces the necessary current. One side of the generator is "grounded" to the sea. Electricity from the other side is led, through a cable bearing a metallic strand, to the harpoon.
PopularScience_19410701_0139_001_0027.xml
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21
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CLARENCE A. O'BRIEN
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CLARENCE A. O'BRIEN
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PopularScience_19410701_0139_001_0028.xml
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22
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MILWAUKEE SCHOOL of ENGINEERING
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MILWAUKEE SCHOOL of ENGINEERING
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PopularScience_19410701_0139_001_0029.xml
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22
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JOHNSON MOTORS
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JOHNSON MOTORS
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PopularScience_19410701_0139_001_0030.xml
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22
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Brikcrete Associates, Inc.
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Brikcrete Associates, Inc.
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PopularScience_19410701_0139_001_0031.xml
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23
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THE MARLIN FIREARMS COMPANY
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THE MARLIN FIREARMS COMPANY
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PopularScience_19410701_0139_001_0032.xml
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23
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McMORROW & BERMAN
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McMORROW & BERMAN
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PopularScience_19410701_0139_001_0033.xml
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24
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American Technical Society
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American Technical Society
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PopularScience_19410701_0139_001_0034.xml
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24
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COYNE ELECTRICAL SCHOOL
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COYNE ELECTRICAL SCHOOL
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PopularScience_19410701_0139_001_0035.xml
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24
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DYNAMIC WELDER COMPANY
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DYNAMIC WELDER COMPANY
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PopularScience_19410701_0139_001_0036.xml
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25
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Advertisements
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PopularScience_19410701_0139_001_0037.xml
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Lafayette Radio Corp.
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Lafayette Radio Corp.
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PopularScience_19410701_0139_001_0038.xml
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26
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C. A. SNOW & CO.
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C. A. SNOW & CO.
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PopularScience_19410701_0139_001_0039.xml
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The College of Swedish Message
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The College of Swedish Message
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PopularScience_19410701_0139_001_0040.xml
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Advertisements
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PopularScience_19410701_0139_001_0041.xml
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Advertisements
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PopularScience_19410701_0139_001_0042.xml
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Advertisements
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PopularScience_19410701_0139_001_0044.xml
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31,32,33,34,35,36,37,38,39,40
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POPULAR SCIENCE Classified OPPORTUNITIES
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PopularScience_19410701_0139_001_0045.xml
article
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41,42,43
News
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Seeing The Invisible
The Electron Microscope Solves Industry’s Puzzles By Revealing Many Things No One Has Seen Before
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ALDEN P. ARMAGNAC
A NEW commercial model of the electron microscope, perfected by the Radio Corporation of America, recently solved its first industrial problem. White pigment is used to coat paper like this, so that photographs will reproduce well. One standard pigment is precipitated chalk. A Stamford, Conn., manufacturer thought he had a better one in natural calcite rock, ground to tiny particles.
PopularScience_19410701_0139_001_0046.xml
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44,45,46,47
News
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Mask Making
One of America's Oldest Arts
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SINCE prehistoric times mask making has been an American art. The first American, like the Indians and Eskimos of recent times, carved huge, fearsome faces out of wood, and wore them in religious dances to frighten away evil and disease. Sometimes, however, entertainment may have been his goal, as it is of the modern mask maker like Remo Bufano, a short, lively Italian-American of New York’s Greenwich Village, who is one of the foremost present-day mask sculptors.
PopularScience_19410701_0139_001_0047.xml
article
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News
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Air Safety for Factories
The author of this article, Konrad F. Wittmann, has had wide European experience in designing buildings for safety in air raids. Below, on an aerial photo of an American manufacturing area, he points out some typical danger signs
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FACTORIES, like bananas, grow in bunches. As a result, most American industrial plants are a bomber’s dream of a perfect target, so big and bright and shining he can hardly miss them. Best of all, in many instances a single bomb can isolate a huge bunch, by demolishing a bridge, crossroads, or railway junction.
PopularScience_19410701_0139_001_0048.xml
article
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Facts and Ideas
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Cafe Owner Uses Coal-Shed "Studio" To Operate His Homemade Juke Box
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PUTTING two of his hobbies to work, the proprietor of the Hotel de Hamburg in Paw Paw, Mich., now provides his customers with free music of their own choice while they eat. One hobby, tinkering with radio equipment, enabled him to convert a coal shed into a “broadcasting studio,” equipped with two electric phonographs and a microphone which were hooked up to loudspeakers in the restaurant.
PopularScience_19410701_0139_001_0049.xml
article
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Inventions
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"Centering Microscope" Spots Drill Point Within .00018 Inch
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LOCATING a drill point within .00018 inch of a desired point is said to be possible with a “centering microscope” developed by Stanley Griffin, of Glendale, Calif. The instrument is fastened in the chuck of the drill press with which the hole is to be made, and a 70-power lens system then throws an image of the work to be drilled on a leaded prism within the microscope.
PopularScience_19410701_0139_001_0050.xml
article
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54
Inventions
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INDUSTRY REVIVES AN OLD PUZZLE
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IN A centuries-old Chinese novelty, Vivien Kellems of New York City has found a new way to handle war projectiles, and to perform a host of useful engineering tasks. The original Oriental puzzle, a tubular sheath of braided straw, traps a finger thrust into it.
PopularScience_19410701_0139_001_0051.xml
article
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55
Inventions
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Radio Sounds Go Three-Dimensional
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BY USING skeleton bungalows, submarine tunnels, oversize metronomes, cores from paper rolls, and movie-like sets, radio engineers have developed ways to broadcast “sound in depth,” with three-dimensional effect. In the past, listeners have usually heard a series of close-ups.
PopularScience_19410701_0139_001_0052.xml
article
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56,57
Facts and Ideas
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TRAINS FOR GROWN-UPS
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BILL ROULSTONE, Ted Mix, and Tony Ellis liked to build and play with trains when they were kids together, and they never outgrew their joy of it. Recently they decided to commercialize their hobby, built a mile of track in a New York City greenhouse, and made it available to the public.
PopularScience_19410701_0139_001_0053.xml
article
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58,59,60,61,62,63,212
News
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Back to the Helicopter
How a Great Airplane Designer Made a Boyhood Dream Come True
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HICKMAN POWELL
EVERYBODY has in his past some defeat, failure, or disappointment which he longs to go back and conquer. Back in 1908, when Igor I. Sikorsky was a 19-year-old boy in Russia, he built a helicopter which would not fly. This is the story of how the man who first dreamed a practical dream of great ocean liners of the air, and made it come true, today is turning another vision into reality—this time the dream of back-yard aviation for everybody.
PopularScience_19410701_0139_001_0054.xml
article
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Facts and Ideas
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MESH AND WOOD MAKE MUSEUM TREES
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TREES FOR exhibits in the American Museum of Natural History in New York are produced with saw, hammer, nails, and wire cutters instead of the customary seeds, sun, and rain. Museum workers first study photographs of the trees to be copied, then form skeleton trunks and branches of planks and beams.
PopularScience_19410701_0139_001_0055.xml
article
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65,66,67
News
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full COLOR television
HOW COLORS ARE PUT ON THE AIR
Home Receiver for Color Television
The “Eye”—No Longer Color-Blind
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SO NEAR is television in natural colors that, by the time you read these lines, observers at several dozen receivers already may be picking up test programs broadcast from the Chrysler Building in New York City. Test programming is the last step before this technical wonder, long in the process of laboratory development, will be ready for the public.
PopularScience_19410701_0139_001_0056.xml
article
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68
Inventions
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Trees Get Injection Into "Blood Stream" To Kill Canker Germ
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A NEW METHOD for treating the bleeding canker disease in trees, similar to the injection of serum into the blood stream of a human being, has been developed by Nestor Caroselli, assistant pathologist at the Bartlett Tree Laboratories, of Stamford, Conn.
PopularScience_19410701_0139_001_0057.xml
article
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68,69
Facts and Ideas
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Germans Boast that They Have a Long-Range Bomber . . . ... so Maneuverable It Can Be Used for Hedge-Hopping
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The German Flying Spindle, a long-range bomber that is the successor to the Flying Pencil, is so maneuverable that it can be used for hedge-hopping, the German Library of Information boasted, in submitting the striking photographs below.
PopularScience_19410701_0139_001_0058.xml
article
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Inventions
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Transparent Crib Looks Fragile But Is Really Strong
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PAUL BRY and Jo Kim, of New York City, have designed a baby’s crib of transparent plastic that is as serviceable as it looks fragile. The bassinet of woven Tenite is hung between two large round rings of bleached walnut, covered with sky-blue leatherette.
PopularScience_19410701_0139_001_0059.xml
article
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News
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Picking 40,000 Pilots a Year
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THE GOVERNMENT expects to be turning out pilots at the rate of 40,000 a year before the end of 1941. The Army’s quota is 30,000 and the Navy's 10,000. That’s nearly three times as many as the Army was graduating only last spring and nearly twice as many as the Navy was producing.
PopularScience_19410701_0139_001_0060.xml
article
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73,74,75,76
News
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LIGHT CONDITIONING
New Products of Glass Industry Enable Architects and Builders To Control and Direct Daylight
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EDWIN TEALE
BECAUSE a special kind of glass has been installed in the windows of the Curtiss-Wright plant, near Buffalo, N. Y., the metal fuselages of fighting planes are moving faster along the assembly line. If ordinary windowpanes were used, the glare from the polished metal on sunny days would cause discomfort and cut down efficiency.
PopularScience_19410701_0139_001_0061.xml
article
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77
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BOTTLES TAKE A "SINGING LESSON"
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KNOCKING empty bottles together to check their “tone” and “feel” is part of the job of A. W. Hortenstine, chief glass tester for the Old Quaker plant of Schenley Distillers Corporation, Lawrence-burg, Ind. assure quality, Hortenstine makes a bottle-by-bottle inspection of at least 50 cases out of every carload of 1,500 cases received at the plant.
PopularScience_19410701_0139_001_0062.xml
article
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78,79
Facts and Ideas
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"Belly-Whoppers"
HENRY B. KANE'S 1/30,000-SECOND PHOTOS CATCH A FROG DIVER OFF GUARD
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FROGS have been leaping into water for 100,000,000 years. Yet, they still make the same mistakes as any swimming-hole schoolboy. How they often hit the water in splas ling belly-whoppers, or with their long, springboard legs flying too far ahead over their backs, is revealed in this series of ultra-high-speed flash shots recorded by Henry B. Kane, noted nature photographer of Harvard, Mass.
PopularScience_19410701_0139_001_0063.xml
article
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80
Facts and Ideas
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Mobile Rig Can Be Set Up at Oil-Well Site in Three Hours
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TO DRILL deep wells, three California manufacturers have developed a mobile rig which can be erected in three hours. It travels on its own trailer over highways without special permits. Hydraulic jacks lift the tower from the horizontal to half-height, then a separate winch line extends it up 90 feet.
PopularScience_19410701_0139_001_0064.xml
article
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81
Facts and Ideas
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Rifle in a Box Trains Marksmen to Shoot—and They Don't Use Any Cartridges
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TEACHING soldiers or civilians to shoot accurately in one tenth of the time usually required for the process is said to be possible with a device developed by Nathan P. Zablow, of New York, and Corporal Paul H. Fidelman, of the Organized Marine Corps Reserve.
PopularScience_19410701_0139_001_0065.xml
article
81
81
Inventions
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Magnetic Gauge Measures Thickness of Metal Sheets
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MEASURING the thickness of sheets of magnetic material even when only one side is accessible is possible with a gauge developed in the laboratories of the General Electric Company. Accurate to .001 inches, the gauge consists of a seven-pound indicating unit, which is connected to an electric-current outlet, and a cylindrical head containing an alnico magnet.
PopularScience_19410701_0139_001_0066.xml
article
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82,83,84,85,86,87
News
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Gas-Bag Fleet
NAVY COUNTS ON BLIMPS FOR PATROL AND CONVOY WORK
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JOHN WATSON
IN THE spectacular development of aeronautics under the compulsion of war and defense, public attention has been focused on the huge bombers and wasplike fighter and interceptor planes. These are instruments of battle and their movement is attended by tense and breathless drama.
PopularScience_19410701_0139_001_0067.xml
article
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88
Inventions
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Hand-Power Scythe Cuts Weeds Beneath the Water's Surface
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A POWER SCYTHE has been developed which need not stop at the water line, but can continue out into a lake and thus mow down the ragged and prolific seaweeds, which heretofore have had to be cut by hand, if at all. It is light and easy to maneuver, and the one-horsepower motor is well up from the cutter to permit a considerable range from the shore.
PopularScience_19410701_0139_001_0068.xml
article
88
88
Inventions
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Sleeve Protectors of Pliofilm Are Strong, yet Inconspicuous
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TRANSPARENT sleeve protectors of pliofilm have recently been introduced. They are noninflammable, waterproof, resistant to mild acid solutions, and unaffected by oil or grease, so they may be cleaned with a damp cloth and, say the makers, will last indefinitely.
PopularScience_19410701_0139_001_0069.xml
article
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88
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Cyclotron Turns Diamonds Green
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THE cyclotron, or atom smasher, is being used at Harvard University to turn ordinary white diamonds into the highly prized green diamonds. Bombardment for an hour with heavy hydrogen atoms does it, and the gems retain their color better than the natural ones.
PopularScience_19410701_0139_001_0070.xml
article
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89,90,91
News
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SKILLED HANDS
Supply the Army with Its Telescopes, Range Finders, and Fire-Control Equipment
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A SMALL group of handicraft workers, almost forgotten in the rush of mass-production industry, has suddenly become one of the most important elements in America’s drive for national defense. They are the lens grinders who make the amazingly precise range finders, telescopes, and other instruments needed in modern war.
PopularScience_19410701_0139_001_0071.xml
article
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92,93
Here's My Story
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Here's My Story
THE CAREER OF LESTER PFISTER
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[no value]
[no value]
PopularScience_19410701_0139_001_0072.xml
article
94
94,95,96,97
[no value]
[no value]
R. F. D. Gets Wings
Pick-up Service Brings Air Mail to Towns off the Main Sky Lanes
[no value]
[no value]
CHARLES MORROW WILSON
EFFICIENT plane service with a minimum of landings and ground costs is probably first among the new developments in aviation in which America leads the world. Plane “pick-up” operation is now being proved a practical means for bringing air mail, air express, and other valuable aviation services to thousands of towns and communities.
PopularScience_19410701_0139_001_0073.xml
article
98
98,99,100,101,102
News
[no value]
Industry's $100,000,000 TOOL
Abrasives are the Key to the Machine Age
Grinding Touches Everything You Do
[no value]
[no value]
WALTER HOLBROOK
WHEN the second World War began there were fewer than 10,000 men in the United States making abrasives, without which not a single airplane, gun, ship, or truck could have been built. Today nearly twice that number labor overtime turning out 100,000 different kinds of grinding wheels, each to fill a special need, and the head of the Norton Company appeals to his employees at Worcester, Mass.: “We need more skilled mechanics who are not doing armament work elsewhere.
PopularScience_19410701_0139_001_0074.xml
article
103
103,104,105,106,107,108,109,110,111,112
News
[no value]
Soldier Engineers
THE U.S. ARMY'S MEN IN OVERALLS BACK UP THEIR MOTTO "GIVE US A TRY"
[no value]
[no value]
LIEUT. COL. W. F. HEAVEY
WHEN the army moves across-country, the engineers have much to do with moving it. Their maps have outlined the route. Their roads carry the motorized forces and supplies. Their bridges cross the rivers which otherwise would block the progress of the army.
PopularScience_19410701_0139_001_0075.xml
article
113
113
Un-Natural History
[no value]
Un-Natural History
[no value]
[no value]
[no value]
Gus Mager
[no value]
PopularScience_19410701_0139_001_0076.xml
article
114
114,115,116,117
[no value]
[no value]
Mountain-Top Windmill
TO FEED VERMONT ELECTRIC LINES
[no value]
[no value]
[no value]
THE STAINLESS-STEEL blades of the world’s largest windmill, each blade as big as the wing of an Army bomber, will soon begin spinning on a New England mountain top, generating electric current from the wind. Seventy-five tons of steel will rotate at the top of the 110-foot tower of this experimental wind turbine, located in the Green Mountains, ten miles northwest of Rutland, Vt.
PopularScience_19410701_0139_001_0077.xml
article
118
118,119
Facts and Ideas
[no value]
It's a Living
[no value]
[no value]
[no value]
[no value]
THE butcher, the baker, the candlestick maker represent traditional ways of earning bread and butter for the family table; but thousands of persons take their livelihood from little-known occupations. Who ever would think of crocheting large commercial signs, riding a mechanical elephant, or painting with chewing gum?
PopularScience_19410701_0139_001_0078.xml
article
120
120
Facts and Ideas
[no value]
FISH-SCALE JEWELRY
[no value]
[no value]
[no value]
[no value]
JEWELRY carved from the scales of the giant gar fish, which infests Louisiana bayous and preys on game species, now helps pay for war on this enemy of fishermen. The odd craft was originated by Percy Viosca, Jr., of New Orleans. For men, the ivorylike scales become watch charms, tie clasps, and lapel ornaments; for women, necklaces, bracelets, and hair clasps, as demonstrated by Viosca’s daughter, Yvonne, at right.
PopularScience_19410701_0139_001_0079.xml
article
121
121,122,123,124,125
AUTOS
[no value]
How Microphones and Sound Meters Help Build Silence into Car Bodies
[no value]
[no value]
[no value]
SCHUYLER VAN DUYNE
ONCE you could tell the make of an automobile a block away by ear. People then said that one car chugged, another make whistled, still another purred. Any schoolboy could call the turn. Today you’re good if you can even hear a car a hundred feet away.
PopularScience_19410701_0139_001_0080.xml
article
126
126
Automobiles
[no value]
VACATION CAR
[no value]
[no value]
[no value]
[no value]
LOOKING LIKE a cross between a streamlined sedan and a station wagon, an elaborate vacation car, specially designed for Preston Foster, Hollywood star, keeps life luxurious during hunting and fishing trips in the Southwest. Reading lamps, radio, refrigerator, Pullman-type bed, cupboard, gas stove, and a dustproof compartment for guns and fishing tackle, are included.
PopularScience_19410701_0139_001_0081.xml
article
127
127,128,129,130,131
Automobiles
[no value]
Drive Safely
DO THAT AND YOU'LL AVOID ACCIDENTS AS WELL AS TICKETS, SAY THE HIGHWAY POLICEMEN
[no value]
[no value]
PAUL NELSON
"NINE times out of ten, a warning will do more to make a motorist drive safely than a traffic ticket. We try to get people into the habit of looking after their own skins. If they’ll only do that, the safety of the other fellow will usually take care of itself."
PopularScience_19410701_0139_001_0082.xml
article
132
132,133
Automobiles
[no value]
SEVEN NEW IDEAS FOR CAR OWNERS
[no value]
[no value]
[no value]
[no value]
1 PACKING THE CAR JACK in an envelope of rubber cut from an old inner tube serves a double purpose for the car owner. It prevents caked mud picked up by the jack from messing up the tool compartment, and also eliminates any possibility of the jack rattling on bumpy roads.
PopularScience_19410701_0139_001_0083.xml
article
134
134,135,136,210
Automobiles
[no value]
GUS chases a jinx
[no value]
[no value]
[no value]
MARTIN BUNN
JOE CLARK’S voice came from the office of the Model Garage: “Hey, Gus! Telephone!” Gus Wilson was busy in the shop with a valve-grinding job, and anyhow he dislikes telephone conversation. “You take it,” he called to his partner. “Ask ’em what they want.”
PopularScience_19410701_0139_001_0084.xml
article
137
137,138,139,140,141,142,143
HOME and WORKSHOP
[no value]
Furniture for a Sunny Outdoor Living Room
[no value]
[no value]
[no value]
[no value]
SUITABLE furniture will make any garden more livable and add much to the enjoyment of healthful hours spent outdoors. The proper garden dining accessories will also supplement a barbecue fireplace (see P.S.M., June ’41, p. 156) from the standpoint of appearance as well as utility.
PopularScience_19410701_0139_001_0085.xml
article
144
144,145
Home Building
[no value]
IDEAS for HOME OWNERS
[no value]
[no value]
[no value]
[no value]
A PAINT-CAN GUARD which is pressed into place much like a lid makes it possible to pour from the can without spilling, keeps the rim free from paint, and serves as a brush rest, wiper, and holder for the stirring paddle. It is available in two sizes for one-quart and one-gallon cans.
PopularScience_19410701_0139_001_0086.xml
article
146
146,147
[no value]
[no value]
KEEPING THE HOME SHIPSHAPE
[no value]
[no value]
[no value]
[no value]
THE USUAL LITTER of making cracker crumbs can be eliminated by putting the crackers into a paper, oiled silk, or cloth bag, folding the top over, and crushing them with a rolling pin. Sift crumbs if necessary to remove any unbroken pieces DOOR KNOBS with threaded shanks make convenient pulls or handles for workshop drawers, screen and closet doors, lids, and the like.
PopularScience_19410701_0139_001_0087.xml
article
148
148,149,150,151,152,153
HOME and WORKSHOP
[no value]
Repairing Inside Walls
[no value]
[no value]
[no value]
JOHN MODROCH
INSIDE walls frequently have to be repaired before they can be repainted or papered. It is important not to slight this work, which is not especially difficult or expensive to do. The materials needed and the method of procedure, of course, depend upon the construction of the wall.
PopularScience_19410701_0139_001_0088.xml
article
153
153
Shop Data File
[no value]
DECORATORS' PASTE
[no value]
[no value]
[no value]
[no value]
For patching decorative work and embossed designs, replacing lost parts of carvings and moldings, and similar purposes, a decorators’ paste can be mixed as follows: Rye meal or flour 2 lb. Whiting 1 lb. Casein glue ½ lb. Powdered alum ¼ lb.
PopularScience_19410701_0139_001_0089.xml
article
154
154,155
HOME and WORKSHOP
[no value]
Twin Closets for a Country Home
[no value]
[no value]
[no value]
[no value]
SOME inscrutable fate has decreed that farmhouses, bungalows, and vacation homes in general must have insufficient closet space. The solution suggested in the accompanying sketches provides individual closets for “Mr.” and “Mrs.” in addition to a luxurious dressing table—and all at the expense of two feet taken from the length of the room, and, in a room of 12' width, about $30 worth of material.
PopularScience_19410701_0139_001_0090.xml
article
156
156
Woodworking
[no value]
Colonial Trestle Table
[no value]
[no value]
[no value]
JOSEPH ARONSON
THE trestle table is one of the most ancient and practical table designs. This model is taken from a seventeenth-century Vermont antique. The original has a pine top, with oak, maple, and beech used at random in the base. You can vary the size to suit your needs, but the proportions drawn, 33" by 62" by 28" high, are good for average use.
PopularScience_19410701_0139_001_0091.xml
article
157
157
Woodworking
[no value]
Cricket Footstool
[no value]
[no value]
[no value]
[no value]
IN COLONIAL days no hearth was complete without a cricket for the comfort of the child who turned the roasting spit in the open fireplace. Nowadays these crickets are used as footstools. A thick pine board, about 1½" by 11" by 15", is cut to an elliptical pattern, and the edges planed and sandpapered to produce an irregularly worn effect.
PopularScience_19410701_0139_001_0092.xml
article
158
158,159,160
HOME and WORKSHOP
[no value]
Extra Income FROM YOUR HOME WORKSHOP
8 Pointers for Making Money
[no value]
[no value]
EDWIN M. LOVE
CAN the home workshop be a source of income ? The answer is that it can. Thousands of one-man shops throughout the country afford full or part-time employment for their owners. Many have grown into two-, three-, and four-man shops, and even into small factories.
PopularScience_19410701_0139_001_0093.xml
article
161
161
HOME and WORKSHOP
[no value]
LAMINATED DIVING BOARD
[no value]
[no value]
[no value]
[no value]
A GOOD diving board is an asset to any summer camp or swimming pool, but a suitable plank is apt to be expensive. The Forest Products Laboratory of the United States Forest Service at Madison, Wise., has developed a comparatively inexpensive type of laminated board, which, in actual use at a public beach, has outlasted ordinary boards five to one.
PopularScience_19410701_0139_001_0094.xml
article
162
162
Outdoors
[no value]
Miniature Wind Sock at Masthead Aids in Handling Sailboat Effectively
[no value]
[no value]
[no value]
W. MACK ANGAS
AUTHORITIES agree that no sailboat can be handled to best advantage unless it is fitted with some sort of wind vane or pennant. The wind sock illustrated is patterned after those used at aviation fields and serves admirably on a boat. It can be made of muslin or similar material, hemmed at the ends and stitched up the side.
PopularScience_19410701_0139_001_0095.xml
article
162
162
Outdoors
[no value]
Old Auto Tires Used as Reel for Taking up Barbed Wire
[no value]
[no value]
[no value]
A. R. MCFADDIN
THIS BIG reel makes it easy to take up barbed wire from temporary fences. Two old auto tires and four sticks about 1" by 1½" by 25" are needed. Cut holes for the sticks in one wall of each tire, assemble with these walls facing each other, and secure the sticks by driving nails into them through both outer tire walls.
PopularScience_19410701_0139_001_0096.xml
article
162
162
Outdoors
[no value]
Rubber Insert Keeps Strap Taut
[no value]
[no value]
[no value]
BERTRAM BROWNOLD
ARTICLES strapped to the package rest of a bicycle are less likely to jar loose if a heavy rubber band, cut from an old inner tube, is inserted in the strap by means of two wire links as above. Such a strap is also useful for clamping glued parts of irregular shape.
PopularScience_19410701_0139_001_0097.xml
article
163
163
Outdoors
[no value]
Simple Bellows Pumps Up Pneumatic Camp Beds Quickly
[no value]
[no value]
[no value]
F. R. SANBORN
FILLING several air beds with a tire pump took so much time and hard work that I made the bellows illustrated from two wooden disks and rubber from an old inner tube, which was split along the inside and cut to lap over about an inch. To operate, the top disk is pulled up and pushed down slowly.
PopularScience_19410701_0139_001_0098.xml
article
163
163
Outdoors
[no value]
Taping Leaks in Garden Hose
[no value]
[no value]
[no value]
W. H. QUADE
To TAPE a leak in a garden hose, first apply electrician’s rubber tape, stretching it well. Cover this with a layer or more of black friction tape. Should the friction tape loosen, it can be replaced without disturbing the original repair.
PopularScience_19410701_0139_001_0099.xml
article
163
163
Outdoors
[no value]
Fastening a Pork-Rind Strip to a Plug or Spoon Lure
[no value]
[no value]
[no value]
ROBERT PAGE LINCOLN
FISHERMEN often add attractiveness to a plug or spoon lure by attaching to it a strip of commercially bottled pork rind. To center this so the plug or spoon will weave through the water in a natural way, wire in and solder a small fly-rod snap to the gang hook.
PopularScience_19410701_0139_001_0100.xml
article
163
163
Outdoors
[no value]
Lard-Can Sterilizer Improves Soil for Use in Seed Flats
[no value]
[no value]
[no value]
S. Y. CALDWELL
STEAM-STERILIZING the soil used in seedling flats eliminates weeding and trouble from damping-off fungi. Cut a heavy tin disk to fit closely inside a 5-gal. lard or paint can with a cover. Punch nail holes in the disk as shown above. Put two bricks on edge in the can, pour in about 3" of water, and drop in the disk.
PopularScience_19410701_0139_001_0101.xml
article
164
164,165,166,167
Outdoors
[no value]
Cruising Sailboat
PART V: HOW TO COMPLETE OUR NINETEEN-FOOTER
[no value]
[no value]
Bruce
Willard Crandall
IF AN inboard motor is to be used in our new 19' cabin sloop, it will be best to make a full-sized drawing of the profile view showing the skeg, keel, keelson, engine beds, and location of the frames. From this drawing can be determined the exact angle of the shaft, and the angle and height of the engine beds.
PopularScience_19410701_0139_001_0102.xml
article
168
168,169
Miscellaneous
[no value]
New Appliances for the Household
[no value]
[no value]
[no value]
[no value]
BABY CAN'T TURN this dish over and spill food from it, because it is anchored by a large rubber suction cup. The latter is molded in one piece with a rubber jacket which keeps the contents of the three-compartment china dish warm. The jacket is available in both pink and blue FOODS CAN BE FROZEN and kept fresh for weeks in a special locker in the new refrigerator shown below.
PopularScience_19410701_0139_001_0103.xml
article
170
170,171
Craftwork
[no value]
MODERN PLASTIC CIGARETTE DISPENSER
[no value]
[no value]
[no value]
HARRY WALTON
IN CONSTRUCTING this decorative cigarette dispenser, you can use copper or nickel silver with crystal plastic, or with opaque plastic in gay colors. An alternative all-plastie design is also shown. The sidepieces or uprights are ¼" thick plastic.
PopularScience_19410701_0139_001_0104.xml
article
171
171
Craftwork
[no value]
"Grist to the Mill" Is Motif of Weather-Vane Silhouette
[no value]
[no value]
[no value]
[no value]
EITHER resin-bonded waterproof plywood or sheet metal may be used for this gristmill silhouette. The four-bladed wheel should be bushed with a short piece of brass tubing, and a steel screw used as the bearing. The wheel mounting is a piece of ¾" dowel, slotted to slip over the windmill.
PopularScience_19410701_0139_001_0105.xml
article
172
172,173
WORKING TIME: ONE EVENING
[no value]
Five-Piece Desk Ensemble
[no value]
[no value]
[no value]
[no value]
SIMPLE as they are to make, these five accessories will add a touch of smart modem styling to any home desk or writing table. Mahogany, accented with a bit of oak here and there, was the wood used, but walnut and maple, cherry and ebony, mahogany and walnut, or other woods are suitable.
PopularScience_19410701_0139_001_0106.xml
article
174
174
Craftwork
[no value]
NAUTICAL LAMP
RESEMBLES ENGINE-ROOM TELEGRAPH
[no value]
[no value]
BRUCE MACINTOSH
SIMPLE enough for the beginner to make, yet sufficiently novel to interest the experienced woodworker, this nautical lamp can be completed in about two evenings. It will make a pleasing companion piece to the nautical match holder previously described (see P.S.M., June ’41, p. 181).
PopularScience_19410701_0139_001_0107.xml
article
175
175
Craftwork
[no value]
Tobacco-Tin Whirligig Answers Questions
[no value]
[no value]
[no value]
JULES L. NATHANSON
HERE’S fun for your next party. This odd little device, which anyone can make in about one hour, answers both spoken and unspoken questions and even at times seems to prophesy the future. It is sure to amuse at any gathering, especially if the questions are shrewdly put.
PopularScience_19410701_0139_001_0108.xml
article
175
175
New Shop Ideas
[no value]
Inexpensive Milk Strainer Disks Filter Paint for Spraying
[no value]
[no value]
[no value]
G. B.
MILK strainer disks, costing only a few cents a hundred, are excellent for filtering small quantities of paint, enamel, and other finishing materials that are to be sprayed. They will filter out finer particles from the paint than a cheesecloth strainer.
PopularScience_19410701_0139_001_0109.xml
article
175
175
Craftwork
[no value]
Realistic Eyes for Small Figures Made of Toothbrush Handles
[no value]
[no value]
[no value]
C. M. SMITH
EYES for carved Scottie dogs and similar animals and birds can be cut and filed to shape from transparent colored toothbrush handles. Cemented into shallow holes, the eyes gleam in the light.
PopularScience_19410701_0139_001_0110.xml
article
176
176
New Shop Ideas
[no value]
Magnetized Bushing Retains Lubricant for Drilling
[no value]
[no value]
[no value]
W. E. B.
A HARDENED steel bushing that has been magnetized makes an excellent retaining ring for drill-bit lubricant and is superior to the washers sometimes used. The bushing should, of course, be larger than the drill employed. Magnetize it by stroking it across one pole of a strong permanent magnet or D.C. electromagnet.
PopularScience_19410701_0139_001_0111.xml
article
176
176
New Shop Ideas
[no value]
Putty Knife Stirs Lacquer and Paint in Small Cans
[no value]
[no value]
[no value]
LEO M. KNASKY
LACQUER, enamel, or paint in a small can is difficult to stir with a paddle without wasting some of it. A better way is to set the can on a rubber mat or a piece cut from an old inner tube and stir the contents by spinning a round-handled putty knife between the palms of the hands as shown.
PopularScience_19410701_0139_001_0112.xml
article
176
176
New Shop Ideas
[no value]
Sponge Rubber Forms Nonskid Bottle Holder
[no value]
[no value]
[no value]
NORMAN DALY
BY SETTING an ink bottle into a piece of sponge rubber, it can be kept from sliding off a tilted drawing board, and the sponge also serves as an excellent penwiper. Cut a hole in the rubber and push the bottle not quite all the way through.
PopularScience_19410701_0139_001_0113.xml
article
176
176
Shop Data File
[no value]
FORGING A COLD CHISEL
[no value]
[no value]
[no value]
[no value]
Tool steel suitable for cold chisels, cape chisels, punches, and drift pins may be bought from many hardware stores or from any blacksmith shop. Hexagon or octagon tool steel is preferred, although old round or square files make excellent chisels.
PopularScience_19410701_0139_001_0114.xml
article
177
177
New Shop Ideas
[no value]
Dowel Tenons Are Speedily Turned in Special Drill-Press Jig
[no value]
[no value]
[no value]
R. O. LISSAMAN
WITH the aid of the homemade jig illustrated, a drill press can be used to turn dowel tenons on either square or round stock. This is much quicker than using a lathe, especially for chair rungs and other quantity work. The jig, which must be bolted to the drill-press table, will accommodate stock up to 1½", round or square.
PopularScience_19410701_0139_001_0115.xml
article
178
178,179,180
New Shop Ideas
[no value]
Slide-Rest Shaper
PART TWO
[no value]
[no value]
C. W. WOODSON
IN THE construction of our versatile, timesaving shaper attachment for a small lathe (Figs. 10 and 19), the next part to be machined is the clapper box. This is made from solid steel to the dimensions as shown in the drawings that appeared in the preceding installment.
PopularScience_19410701_0139_001_0116.xml
article
179
179
Shop Data File
[no value]
KNURLING IN THE LATHE
[no value]
[no value]
[no value]
[no value]
Knurling, which may be done with fine, medium, or coarse knurls, requires a slow back-geared speed. To knurl steel, use oil liberally. Brass and cast iron can best be knurled dry. On work wider than the knurls, start at the right or tailstock end with a heavy feed and allow the longitudinal feed to carry the tool over the work several times, setting the tool deeper each time until the knurling is complete.
PopularScience_19410701_0139_001_0117.xml
article
181
181
New Shop Ideas
[no value]
Painting Turntable Made from Spring-Wound Phonograph Motor
[no value]
[no value]
[no value]
MAURICE KAINS
WHEN spray-painting small articles on which a smooth, even finish is important, it is possible to do better work if the pieces are placed on a phonograph turntable. Heat the projecting shaft red-hot with a blowtorch to draw its temper, then cut off or file it flush with the turntable surface.
PopularScience_19410701_0139_001_0118.xml
article
181
181
New Shop Ideas
[no value]
Notch Checks Angle of Drills
[no value]
[no value]
[no value]
W. C. W.
A 120-deg. V-shaped notch, filed in the end of a tool-grinder rest by means of two triangular saw files held firmly together as below, is convenient for checking the angle of drill lips when sharpening these on the wheel.
PopularScience_19410701_0139_001_0119.xml
article
181
181
New Shop Ideas
[no value]
Wooden Tool Handles Branded with Finger-Nail Polish
[no value]
[no value]
[no value]
B. N.
INITIALS and other marks can be burned into wooden handles or other wood surfaces with finger-nail polish. Paint on the desired letters or figures with a small brush, and immediately touch a match to the polish. When it has burned away, rub the surface with a cloth.
PopularScience_19410701_0139_001_0120.xml
article
181
181
Shop Data File
[no value]
HARDENING A COLD CHISEL
[no value]
[no value]
[no value]
[no value]
1. Place the forged chisel in the fire, bring it up to a bright red color, and quickly plunge it entirely into a pail of water (not too cold). Leave until cold. 2. Grind the edge and do any necessary dressing. 3. Polish the point for about 1½" back from the edge with emery cloth.
PopularScience_19410701_0139_001_0121.xml
article
182
182,183,184,185,186,187
HOME and WORKSHOP
[no value]
LIGHTING PLANT FOR FARM OR CAMP
[no value]
[no value]
[no value]
HAROLD P. STRAND
TWO old automobile generators picked up in a junk yard for four dollars form the main generator and exciter of this lighting plant. It delivers 110-115 volts, 60 cycles, at 1,800 r.p.m., and is capable of carrying 800 watts load—all that is necessary to render excellent service on the farm or at a summer home or camp where power service is not available.
PopularScience_19410701_0139_001_0122.xml
article
184
184
Shop Data File
[no value]
ELECTROPLATING, PART 3
[no value]
[no value]
[no value]
[no value]
The choice of a tank or container for the electrolyte depends largely on the quantity of the work and frequency of use. A small chinaware teacup, marked so that it will not be used for any other purpose, is satisfactory for electroplating finger rings and similar objects, while various sizes of stoneware crocks are suitable for larger work.
PopularScience_19410701_0139_001_0123.xml
article
187
187
Shop Data File
[no value]
RUBBER-STAMP NEGATIVES
[no value]
[no value]
[no value]
[no value]
In some cases it is desired to etch metal with a rubber stamp in such a way that the background is etched, but the trade-mark, letters, or numbers remain untouched, in bright metal. This is the negative or reverse process. Clean the metal thoroughly with dry abrasive.
PopularScience_19410701_0139_001_0124.xml
article
188
188
The Handy Man
[no value]
Beetle Traps from Old Tin Cans
[no value]
[no value]
[no value]
E. B. HAFFNER
THE depredations committed by Japanese beetles have forcibly brought home to thousands of gardeners the menace which these winged pests present (see P.S.M., April ’41, p. 108). For combating them, a strong offensive is the best defense, and the home owner who builds and sets up several of these traps will have gone far toward protecting his plants and lawn.
PopularScience_19410701_0139_001_0125.xml
article
189
189
Craftwork
[no value]
Miniature Underwater Light for Marine Model Work Made from Cartridge Shell
[no value]
[no value]
[no value]
L. W. EINBINDER
A REALISTIC little flood or spotlight for use under. water, which is suitable for many types of marine model displays as well as tropical fish aquariums and the like, can be made in a few minutes from an empty .45 caliber cartridge case. Do not use an unfired cartridge.
PopularScience_19410701_0139_001_0126.xml
article
189
189
Miscellaneous
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Model Gas Planes Carried to Airfield on Bicycle Trailers
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BENNIE W. MAYCHECK
THE bicycle trailers illustrated are used for carrying large gas-powered model airplanes to and from the flying field. Each trailer frame is made of light angle iron and fitted with a plywood bottom. An axle is bolted across the bottom for attaching a pair of small wagon or baby-carriage wheels.
PopularScience_19410701_0139_001_0127.xml
article
190
190,191,192
HOME and WORKSHOP
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HOME CHEMISTRY FORMULAS for Household Emergencies
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SO YOU’RE a chemical magician? You change water into fake wine, conjure up foul-smelling chemical snakes that slither across the kitchen table, eat fire like a demon! But when mother or wife comes to you pleadingly with a nice new shirt splotched with ink, and asks if you can make the spot disappear, you hocuspocus yourself out the back door!
PopularScience_19410701_0139_001_0128.xml
article
193
193
Radio Ideas
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Radio Ideas
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STRAP ANTENNA. A brown, flexible strap ending in a wide loop forms the unusual antenna of a new portable radio which can be operated in a train, automobile, or airplane. The looped end of the antenna is attached to a window by-means of a suction cup.
PopularScience_19410701_0139_001_0129.xml
article
194
194,195,196
HOME and WORKSHOP
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TWO-TUBE PORTABLE
A COMPANION FOR LAST MONTH'S SUITCASE PHONOGRAPH
LIST OF PARTS
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DESIGNED as a companion piece to the suitcase phonograph described last month, (P.S.M., June ’41, p. 202), this battery-operated portable will provide many hours of radio entertainment in your home, at parties, or on summer trips and picnics.
PopularScience_19410701_0139_001_0130.xml
article
197
197
Radio
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LOW-COST POWER SUPPLY
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HERE is an “A” and “B” power supply that can be built for less than $2, and will operate any one or two-tube receiver not provided with a power tube. It will supply six volts of alternating current for tube heaters and approximately 80 volts of filtered and rectified direct current for plates and screens of tubes similar to the 6J7, 6K7, and 6C5.
PopularScience_19410701_0139_001_0131.xml
article
198
198,199
PHOTOGRAPHY
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Hints on Posing Better Portraits
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WHEN your photography becomes a bit stale and you lack inspiration, you can get a great lift by thumbing through a book of reproductions of paintings by the old masters. Better still, visit the painting galleries of an art museum. The old masters knew something about posing, composition, and lighting.
PopularScience_19410701_0139_001_0132.xml
article
200
200,201,202
HOME and WORKSHOP
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Taking Star Photos WITH AN ORDINARY CAMERA
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CHARLES H. COLES
THERE is a strange fascination to making star photographs. The sky photographer tries it time and time again. Perhaps this is because it is so refreshing and reassuring to turn to photographing something as changeless as time and enduring as eternity.
PopularScience_19410701_0139_001_0133.xml
article
203
203
PHOTOGRAPHY
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FOR CAMERA USERS
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SOUND FILMS may now be run on all the new 16-mm. Filmo silent projectors. The elimination of one set of sprocket teeth makes it possible for the sound film to be drawn through the silent machine the same as it would be through a regular sound machine.
PopularScience_19410701_0139_001_0134.xml
article
204
204,205,206
PHOTOGRAPHY
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HOW A Hollywood Cameraman Takes Home Movies
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ANDREW R. BOONE
HOLLYWOOD knows Arthur Miller as the man who would rather grind out a desert scene with his home-movie outfit than take intimate close-ups of the most glamorous stars west of the Rockies. For more than a quarter of a century he has been filming professional movies, starting with twenty episodes of “Perils of Pauline” in 1913, and achieving his greatest triumph to date in filming the two-million-dollar “Brigham Young” in color.
PopularScience_19410701_0139_001_0135.xml
article
206
206
PHOTOGRAPHY
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Readily Constructed Speedpod Steadies Movie Camera
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The speedpod mentioned in the foregoing article is instantly adjustable in height from 31" to 56". Its construction can be easily duplicated by anyone who has access to a bench saw or can get the long members ripped to shape by a cabinetmaker.
PopularScience_19410701_0139_001_0136.xml
article
207
207,208
PHOTOGRAPHY
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Long-Focus Lens Adapter
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ARTHUR C. SIMMONS
INTERESTING telephoto effects are possible with a long-focus lens used in a ground-glass focusing camera. Mine is a 4" by 5" Speed Graphic, and I was fortunate in obtaining for five dollars a 16" focal-length, f/8 process-type lens, which will bring into sharp focus any object eight feet or farther away, with a magnification of 2 2/3 over the image size obtainable with the regular lens.
PopularScience_19410701_0139_001_0137.xml
article
208
208
PHOTOGRAPHY
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Clips and Cardboard Form Socket for Midget Flash Bulb
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LOUIS HOCHMAN
AMATEURS who like to take multiple flash pictures with the new midget bulbs often have difficulty finding a socket for the extension cord. A simple solution is to roll a strip of cardboard into a small tube to fit the base of the bulb, and place a paper clip over the edge to hold the ends together and serve as one contact for the bulb.
PopularScience_19410701_0139_001_0138.xml
article
208
208
PHOTOGRAPHY
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Gelatin Film Betters Quality of Photographic Prints
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F. McC.
SOME photographic papers, when dry, fail to show shadow detail that appeared on the wet print. To restore such detail, pour on a five-percent gelatin solution and squeegee over it a wet sheet of Cellophane, as below. Peel this off after the gelatin sets.
PopularScience_19410701_0139_001_0139.xml
article
208
208
PHOTOGRAPHY
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Pencil Under Developing Tray Insures Better Agitation
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JOHN C. WORKLEY
FILMS and prints insufficiently agitated during development are likely to be spotty and poor in tone. Lifting one end of the tray often results in spilled solution, but if a round pencil or piece of dowel is placed under it, as above, the tray can be rolled back and forth without spilling, and with little effort.
PopularScience_19410701_0139_001_0140.xml
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209
209
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Eastman Kodak Co.
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Eastman Kodak Co.
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PopularScience_19410701_0139_001_0141.xml
advertisement
210
210
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HASTINGS MANUFACTURING CO.
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HASTINGS MANUFACTURING CO.
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PopularScience_19410701_0139_001_0142.xml
advertisement
211
211
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AGFA CAMERAS
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AGFA CAMERAS
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PopularScience_19410701_0139_001_0143.xml
advertisement
211
211
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Advertisement: Popular Science
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Popular Science
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PopularScience_19410701_0139_001_0144.xml
advertisement
212
212
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NORTH BROS. MFG. CO.
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NORTH BROS. MFG. CO.
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PopularScience_19410701_0139_001_0145.xml
advertisement
213
213
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Advertisements
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PopularScience_19410701_0139_001_0146.xml
advertisement
214
214
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NICHOLSON FILE CO.
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NICHOLSON FILE CO.
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PopularScience_19410701_0139_001_0147.xml
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214
214
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Advertisement: Popular Science Monthly
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Popular Science Monthly
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PopularScience_19410701_0139_001_0148.xml
article
215
215
PHOTOGRAPHY
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Jets of Water Wash All Hypo Thoroughly from Prints
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FADING and discoloration, the bugaboo of every photographer, need no longer be feared if this new print washer is used. When it is attached to the faucet, water shoots out of fourteen jets and flows to the other end, keeping the prints suspended and thoroughly washing away the hypo from the print fronts and porous backs.
PopularScience_19410701_0139_001_0149.xml
article
215
215
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How to Retouch Any Negative Without Risk of Ruining It
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FRANK SHORE
AMATEUR photographers who wish to retouch a negative without taking any chances of ruining it can do so in the following manner: Find an old negative that is practically clear—that is, one which has no image on it because of great underexposure, or no exposure at all.
PopularScience_19410701_0139_001_0150.xml
article
215
215
The Handy Man
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Box Gutter Painted Under Rim with Aid of a Shoe Dauber
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I. L. C.
THE collars or rims along the outer edge of box gutters often rot while the remainder of the gutter is in good condition. This is caused by lack of paint as it is hard to get under the collar with a brush even if the handle of the brush is cut off. I find that a common ten-cent shoe dauber does the trick better than any other method.
PopularScience_19410701_0139_001_0151.xml
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215
215
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Lafayette Camera
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Lafayette Camera
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PopularScience_19410701_0139_001_0152.xml
advertisement
216
216
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Advertisements
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PopularScience_19410701_0139_001_0153.xml
advertisement
217
217,218
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Advertisement: Popular Science Monthly
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Popular Science Monthly
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PopularScience_19410701_0139_001_0154.xml
advertisement
217
217
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HARLEY-DAVIDSON MOTOR CO.
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HARLEY-DAVIDSON MOTOR CO.
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PopularScience_19410701_0139_001_0155.xml
advertisement
218
218
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UNITED STATES PLYWOOD CORPORATION
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UNITED STATES PLYWOOD CORPORATION
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PopularScience_19410701_0139_001_0156.xml
advertisement
218
218
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GORDON SMITH & CO. Inc.
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GORDON SMITH & CO. Inc.
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PopularScience_19410701_0139_001_0157.xml
advertisement
218
218
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CHICAGO WHEEL & MFG. CO.
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CHICAGO WHEEL & MFG. CO.
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PopularScience_19410701_0139_001_0158.xml
advertisement
219
219
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Advertisements
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PopularScience_19410701_0139_001_0159.xml
advertisement
220
220
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Advertisements
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PopularScience_19410701_0139_001_0160.xml
advertisement
221
221
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Advertisements
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PopularScience_19410701_0139_001_0161.xml
advertisement
222
222
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Advertisements
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PopularScience_19410701_0139_001_0162.xml
advertisement
223
223
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Advertisements
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PopularScience_19410701_0139_001_0163.xml
advertisement
224
224
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SOUTH BEND LATHE WORKS
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SOUTH BEND LATHE WORKS
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PopularScience_19410701_0139_001_0164.xml
advertisement
225
225
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THEO. AUDEL & CO.
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THEO. AUDEL & CO.
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PopularScience_19410701_0139_001_0165.xml
advertisement
226
226,227,228
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R. J. Reynolds Tobacco Co.: Camel
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R. J. Reynolds Tobacco Co.
Camel
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PopularScience_19410701_0139_001_0166.xml