Issue: 19421101

Sunday, November 1, 1942
NOV. 1942
5
True
141
Wednesday, December 31, 2014

Articles
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POPULAR SCIENCE
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PopularScience_19421101_0141_005_0001.xml
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D. Van Nostrand Company, Inc.: SLIDE RULE
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D. Van Nostrand Company, Inc.
SLIDE RULE
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PopularScience_19421101_0141_005_0002.xml
masthead
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POPULAR SCIENCE
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PopularScience_19421101_0141_005_0003.xml
tableOfContents
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2,4,6
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CONTENTS For NOVEMBER, 1942
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PopularScience_19421101_0141_005_0004.xml
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3
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B. F. Goodrich Co.
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B. F. Goodrich Co.
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PopularScience_19421101_0141_005_0005.xml
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4
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Advertisement: PEPSI-COLA
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PEPSI-COLA
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PopularScience_19421101_0141_005_0006.xml
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5
5
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Bell Telephone System
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Bell Telephone System
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PopularScience_19421101_0141_005_0007.xml
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6
6
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THE LINCOLN NATIONAL LIFE INSURANCE COMPANY
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THE LINCOLN NATIONAL LIFE INSURANCE COMPANY
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PopularScience_19421101_0141_005_0008.xml
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7
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19421101_0141_005_0009.xml
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8
8,9
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H. C. LEWIS
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H. C. LEWIS
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PopularScience_19421101_0141_005_0010.xml
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10
10,11
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National Radio Institute
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National Radio Institute
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PopularScience_19421101_0141_005_0011.xml
article
12
12
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Coming Next Month—
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UNCLE SAM’S TRUMP CARD in the game of aerial warfare may well turn out to be the P-47 Thunderbolt, described by experts as the fastest, highest-flying fighter plane in the world. An article tells all that can be told about a ship which will take on anything Hitler and Hirohito can send against it.
PopularScience_19421101_0141_005_0012.xml
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12
12
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USL BATTERY CORPORATION: Auto-Lite Batteries
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USL BATTERY CORPORATION
Auto-Lite Batteries
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PopularScience_19421101_0141_005_0013.xml
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13
13
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CHARLES ATLAS
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CHARLES ATLAS
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PopularScience_19421101_0141_005_0014.xml
article
14
14,16,18
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Readers Say
Christmas Presents for Navy Men Must Be Mailed by November 1
Yes, We Used to Publish Fiction, But Fact Is Stranger These Days
Homemade Motor Scooter Scoots 65 Miles on a Gallon of Gas
If You Don't Believe It, Count 'em Yourself
He Has Gas (Charcoal) to Burn in His Automobile
Try It Out on the Japs— a Shot at a Time
More About Stroboscopic Effects in Fans, Gears, Saws, and Drills
Has Doubts About Plastic Car Tops and Pennants for Waitresses
Pedals and Paddles for Power on Lifeboats and Rafts
A Glutton for Punishment, He Saves News Headlines
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IT WOULD be a real service to men in the Navy if you would publish the following message from the Bureau of Personnel: “November 1st is the deadline for mailing Christmas packages to men in the Navy on foreign station or on shipboard if you want to be sure they will reach the men by Christmas Day, warns the Navy Department.
PopularScience_19421101_0141_005_0015.xml
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15
15
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THEO. AUDEL & CO.
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THEO. AUDEL & CO.
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PopularScience_19421101_0141_005_0016.xml
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16
16
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Remington
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Remington
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PopularScience_19421101_0141_005_0017.xml
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17
17
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METRO PUBLICATIONS
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METRO PUBLICATIONS
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PopularScience_19421101_0141_005_0018.xml
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18
18
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Kaufmann Bros. & Bondy
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Kaufmann Bros. & Bondy
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PopularScience_19421101_0141_005_0019.xml
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19
19
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AMERICAN SCHOOL
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AMERICAN SCHOOL
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PopularScience_19421101_0141_005_0020.xml
article
20
20
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From The News Editors Desk
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AN "IMPOSSIBLE" SUBSTANCE, which cannot exist on the earth but apparently is abundant in the vast stretches of so-called “empty” space between the stars, partly clears up a mystery of long standing. It accounts for three of four spectral lines that have long puzzled astronomers.
PopularScience_19421101_0141_005_0021.xml
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21
21
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ILLINOIS MERCHANDISE MART
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ILLINOIS MERCHANDISE MART
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PopularScience_19421101_0141_005_0022.xml
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22
22
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Advertisements
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PopularScience_19421101_0141_005_0023.xml
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23
23
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MoToR BOOK
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MoToR BOOK
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PopularScience_19421101_0141_005_0024.xml
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24
24
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PopularScience_19421101_0141_005_0025.xml
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25
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Advertisements
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PopularScience_19421101_0141_005_0026.xml
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26
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PopularScience_19421101_0141_005_0027.xml
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PopularScience_19421101_0141_005_0028.xml
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PopularScience_19421101_0141_005_0029.xml
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PopularScience_19421101_0141_005_0030.xml
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PopularScience_19421101_0141_005_0031.xml
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PopularScience_19421101_0141_005_0032.xml
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Advertisement: Popular Science
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Popular Science
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PopularScience_19421101_0141_005_0033.xml
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33
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PopularScience_19421101_0141_005_0034.xml
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PopularScience_19421101_0141_005_0035.xml
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PopularScience_19421101_0141_005_0036.xml
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PopularScience_19421101_0141_005_0037.xml
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PopularScience_19421101_0141_005_0038.xml
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38
38,39,40,41,42,43,44,45
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POPULAR SCIENCE Classified OPPORTUNITIES
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PopularScience_19421101_0141_005_0039.xml
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46
46
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Advertisement: POPULAR SCIENCE
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POPULAR SCIENCE
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PopularScience_19421101_0141_005_0040.xml
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47
47
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Advertisements
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PopularScience_19421101_0141_005_0041.xml
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48
48
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Westinghouse
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Westinghouse
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PopularScience_19421101_0141_005_0042.xml
article
49
49,50,51
News
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Bubble glass—
a new insulating material that is fireproof, can be sawed, and floats like cork
FOAMGLAS DOES NOT ABSORB WATER EVEN WITH LONG SUBMERSION — ITS BUOYANCY COMPARES WELL WITH THAT OF CORK, BALSA WOOD
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KENNETH M. SWEZEY
BLOCKS of opaque glass that float like cork, insulate from heat, and can be sawed, drilled, and shaped with ordinary carpenters’ tools, are the latest and one of the really unique developments in the art of glassmaking. Moistureproof, fireproof, verminproof, rigid, and light, this new product is already being used to insulate refrigerating rooms in such places as meatpacking plants, dairies, breweries, and icecream plants.
PopularScience_19421101_0141_005_0043.xml
article
52
52,53
News
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WAR BRINGS BACK The Moss Harvest
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IRISH moss, which contains a gelatin-like substance used as a base and stabilizer in the manufacture of chocolate ice cream, cheese, hand lotions, and almost 200 other commodities, is being gathered in enormous quantities from a 15-foot belt which extends all along the coast of New England.
PopularScience_19421101_0141_005_0044.xml
article
54
54,55,56,57,58
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TWO GUNS FOR ONE
105-MM. HOWITZER BEATS THE 75 AT ITS OWN GAME —AND ADDS A FEW TRICKS
The 105 Is a Dual-Purpose Gun: Doubles as Rifle or Howitzer
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HICKMAN POWELL
IT IS an old, sound military rule that any infantry attack must be supported by field artillery. In the American Army today, under the new triangular-division setup, the artillery operates more intimately with the foot soldier than ever before.
PopularScience_19421101_0141_005_0045.xml
article
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59
Facts and Ideas
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RAINCOATS WITHOUT RUBBER
Army Uses Waterproofing of Safety-Glass Plastic
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CONSERVATION of rubber for more essential war needs has its place in the Army as well as in civilian life. Among the latest substitutes is the use of Saflex, the interlayer in safety glass, for waterproofing the Army’s raincoats and other fabrics.
PopularScience_19421101_0141_005_0046.xml
article
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60
Facts and Ideas
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New Tools
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PORTABLE AIRLESS BLASTER. Requiring only an electrical connection for its built-in motor, this blaster can conveniently be raised or lowered or twisted around to clean the nooks and crannies of lathe beds, gears, pulleys, flywheels, valves, car wheels, frames, and housings.
PopularScience_19421101_0141_005_0047.xml
article
61
61
Facts and Ideas
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Molded Slugs Make Shotgun Deadly Weapon
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BY RECASTING the small shot contained in a shotgun shell into six flat-topped cylinders, Everett Sweeley, district attorney for Twin Falls County, Idaho, has turned the shotgun into a lethal weapon deadly at ranges up to 100 yards. With a kit which Sweeley has produced, anyone can reload his shells in a few minutes.
PopularScience_19421101_0141_005_0048.xml
article
62
62,63
News
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BLACK LIGHT AIDS NIGHT FIGHTERS
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BLACK LIGHT, once considered mainly as a medium for trick stage effects, now is a recognized war weapon. Black light is an invisible beam of near-ultraviolet rays which cause specially treated objects to glow. Ordinary electric fixtures such as hand flashlights or fluorescent lamps can be used as the light source if they are covered with dark purple glass to screen out the visible light.
PopularScience_19421101_0141_005_0049.xml
article
64
64,65
Facts and Ideas
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Airport Crash Truck
SPECTACULAR TEST
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THE latest development in life-saving equipment for use at landing fields is a crash truck with maneuverable nozzles that can envelop a burning plane with carbon dioxide, driving back the flames and cooling the hot metal sufficiently to allow a rescue crew to pull out the occupants.
PopularScience_19421101_0141_005_0050.xml
article
66
66,67,68,69,70,71,72,229,230,232
News
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War's End will bring a better life
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JOHN H. WALKER
AFTER this war is won, the American people should be able to travel faster and live better than ever before. The money and energy being poured into our war effort now will pay us dividends years after the victory itself. Three main factors in the war effort guarantee a better life for Americans: New Plant.
PopularScience_19421101_0141_005_0051.xml
article
73
73,74,75,76,77,234
Automobiles
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WHAT HAPPENS WHEN YOU Cut Your Motor in Half
HOW AN AGING AUTOMOBILE WITH HALF ITS CYLINDERS DEAD SAVES YOU GASOLINE
How the L-Head V-8 Ford Is Altered To Run on 4 Cylinders
Changes for the Overhead-Valve-Type 6-Cylinder Chevrolet
L-Head 6-Cylinder Motors Like Plymouth's Follow This Plan
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SCHUYLER VAN DUYNE
TO learn what a motorist with an average, or below-average, car gains by using only half of its cylinders, I tried it out. Sticking to the speed limits, I boosted the gasoline mileage of a 1938 Ford V-8 standard four-door sedan nearly 25 per cent on a test round trip between New York City and Schenectady, N. Y.
PopularScience_19421101_0141_005_0052.xml
article
78
78,79
News
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Heaviest Ship Is Launched
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BECAUSE of military secrecy, the details of the recent launching of the world’s largest battleship, the 45,000-ton U. S. S. Iowa, cannot be divulged. However, in the drawings on these pages our artist shows his conception of the steps necessary in getting a ship of this size down the launching ways and into the water.
PopularScience_19421101_0141_005_0053.xml
article
80
80
Automobiles
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"Slip Covers" for Tires
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"SLIP COVERS” that fit over worn car tires, developed by Martin Castricum of the United States Rubber Company, offer a new answer to the problem of rubber scarcity. Woven of cotton pile like bath-mat material, and treated with asphalt emulsion, they are said to add from 2,500 to 3,000 miles of life to old shoes.
PopularScience_19421101_0141_005_0054.xml
article
80
80
Facts and Ideas
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Army Invasion Glider Carries 13 Soldiers and Two Pilots
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DESIGNED to take a leading part among invasion forces, the U. S. Army’s new “Commando” troop-carrying glider spells bad luck for the enemy. Besides the pilot and copilot, it carries 13 fully equipped troops into action. Towed by a twin-motor plane, two or more of the craft may be cut loose and landed in a small field or pasture.
PopularScience_19421101_0141_005_0055.xml
article
81
81
Facts and Ideas
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Tail Brake on DO-217E Controls Its Diving Speed
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CHIEF among the features of Germany’s new Dornier dive bomber, the DO-217E— one of which has been taken in good enough condition for study—is its dive-braking arrangement, transferred from under the wings to the tail. This drogue, as it is called, consists of a series of radial vanes which act as brake surfaces and open on an electric screw jack.
PopularScience_19421101_0141_005_0056.xml
article
82
82,83,84
News
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Quartz Gives Radio Sharper Ears
Finely Ground Crystal Wafers Make Our Modern Methods of Communication Possible
HERE ARE THE STEPS IN CUTTING AND GRINDING A QUARTZ CRYSTAL
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AN ATOM of silicon, going about its submicroscopic business a few million years ago, felt the allure of a pair of oxygen atoms, and since the attraction was mutual, the three united to form a single molecule called silicon dioxide (SiO2). Similar atoms, yielding to the same cosmic compulsion, followed their example, and countless molecules arranged themselves in proper fashion to form crystals of mother quartz.
PopularScience_19421101_0141_005_0057.xml
article
85
85
Un-Natural History
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Un-Natural History
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Gus Mager
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PopularScience_19421101_0141_005_0058.xml
article
86
86,87,88,89,222,224
SOME INSIDE FACTS ABOUT
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CIPHERS: Secret Language Of War
CAN YOU DECIPHER THESE HIDDEN MESSAGES?
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SAFEGUARDING military correspondence is a task that has tested the ingenuity of men from ancient times. Great battles have been lost through dispatches falling into the hands of the enemy. The oldest known precaution against this was the scytale used by Greek generals, a wooden rod around which was wound a ribbon of parchment and the message written across lengthwise.
PopularScience_19421101_0141_005_0059.xml
article
90
90,91,92,93,94,95,96,97,232,233
News
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The JEEP Gets a Big Brother
THREE-QUARTER-TON IS TOPS IN ARMY TRUCKS
Tip-Proof Carburetor
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THAT amazing little Army Jeep is all but bursting its leakproof body seams with pride, for it has a brand-new big brother that is a honey. The new arrival bears enough family resemblances to the Jeep to justify the pride. But it also has some Army mule in it, mixed with various other animal qualities that give it mobility in every climate and terrain.
PopularScience_19421101_0141_005_0060.xml
article
98
98,99,100
News
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Chemical Paint Protects Wood from Fire Bombs
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AS THE first step in demonstrating a new and remarkably efficient fire-retardant chemical, Dr. Walter Juda, research chemist at Harvard University’s Mallinckrodt Laboratories, picked up half a dozen ¾-inch boards and nailed and mortised them into miniature attics approximately a foot long, a foot high, and a foot wide at the base.
PopularScience_19421101_0141_005_0061.xml
article
101
101,102,103
News
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155-mm. NOVEL MECHANICAL FEATURES GIVE BIG-GUN POWER, SMALL-GUN SPEED
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THE American Army’s biggest rifle on wheels, the 155-millimeter cannon, has very much the appearance of a monstrous Kentucky squirrel gun. With its exceptionally long barrel, the 155 looks unwieldly and off-balance and you wonder if the men who serve it don’t have to prop up the tube with a tree in order to blast a 96-pound shell some 12 miles.
PopularScience_19421101_0141_005_0062.xml
article
104
104,105
Here's My Story
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Here's My Story
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CLAUDE RYAN
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PopularScience_19421101_0141_005_0063.xml
article
106
106,107,108,109,110,111
News
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Backing Up the Glory Boys
THESE AIR FORCE SPECIALISTS ARE THE MEN WHO KEEP ’EM FLYING
CALL 'EM "AIR MACS" OR "GREASE MONKEYS," THEY'RE NEEDED BY THE THOUSANDS TO KEEP OUR WARPLANES IN THE FRAY
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CARL DREHER
EVERYBODY knows about the pilots and bombardiers and gunners who shoot down enemy planes and pulverize manufacturing centers and military installations. They are the glory boys, and, from Brigadier General Doolittle down to the greenest flying cadet, they deserve all the medals they can get, and then some.
PopularScience_19421101_0141_005_0064.xml
article
112
112,113
Facts and Ideas
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INVENTORS FIND WAYS TO HELP WIN WAR
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MODERN war being a battle of machines, inventors of the United Nations have gone all out in their efforts to perfect weapons and improvements on weapons that will aid in bringing about a quick defeat of the Axis. On these pages are shown five of the latest—an automatic parachute that is opened by the rush of air, a new sight for the tail guns in big bombers, smokeproducing bullets for riflemen and machine-gunners, floating gasoline “bubbles” to speed the refueling of seaplanes, and wire-dangling rockets that can be shot into the air to ensnare enemy aircraft.
PopularScience_19421101_0141_005_0065.xml
article
114
114,115,116,117
News
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Building Ships with Packing Cases
NEW PACKING MAKES HALF-TRACKS EASY TO HANDLE
PUTTING FOUR 37-MM. GUNS IN THE SPACE OF ONE
COMPRESSION-BALING FOR ARMY CLOTHING NOW
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FOR every ten ships that slide down the ways of American shipyards, the Army’s Services of Supply is, in effect, building an eleventh, and perhaps even a twelfth, by revolutionary improvements in methods of packaging war materials. On the basis of what has already been accomplished, Army and civilian experts predict an over-all saving of from 10 to 20 percent in precious cargo space, with corresponding reductions in weight and packaging costs.
PopularScience_19421101_0141_005_0066.xml
article
118
118,119,120,121
News
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Steel’s Tough Partner
Manganese Puts the Hardness into the Weapons of War and the Tools of Production. We Need Lots of It. New Sources Promise an Adequate Supply
Uses for Manganese: from Flashlight Cells to Steam Shovels
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WHEN an American soldier goes into battle, the best helmet ever produced by military science guards his life. One by one, experts have passed judgment upon every imaginable steel alloy for its outer shell—and have decided upon manganese steel, the toughest known.
PopularScience_19421101_0141_005_0067.xml
article
122
122
Facts and Ideas
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Simple Kit Identifies Fibers in Textiles
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WITH one drop of a newly developed indicator solution, manufacturers, dealers, and consumers can identify any of a dozen popular textile fibers. Replacing a whole series of tests previously necessary, this indicator produces characteristic colors on textiles of different chemical composition.
PopularScience_19421101_0141_005_0068.xml
article
123
123
Facts and Ideas
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Troops May Move on Roller Skates to Save Gasoline and Tire Rubber
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UNCLE SAM’S infantry may soon march to the tune of the “Skater’s Waltz.” In these days of rubber and gasoline shortages, the Government is considering plans to move its new Army on roller skates. For this purpose, a pair of lightweight skates, sporting wheels which could be manufactured from any available fabric, is now undergoing road tests.
PopularScience_19421101_0141_005_0069.xml
article
124
124,125,126,127,128
News
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Fireworks In War
GROUND SIGNAL PROJECTOR IS HAND MORTAR
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[no value]
ALDEN P. ARMAGNAC
NIGHT skies in America, last Fourth of July, probably set a new record for dimness on the national holiday. But on faraway battlefronts, clusters of many-colored stars soared through the air. Very pistols spewed red, white, and green fireballs.
PopularScience_19421101_0141_005_0070.xml
article
129
129
Facts and Ideas
[no value]
SWEEPINGS MADE TO PAY
[no value]
[no value]
[no value]
[no value]
FOUR tons of undamaged rivets, bolts, nuts, and other production-line items are recovered weekly from sweepings at the Downey, Calif., plant of Vultee Aircraft, Inc., through the use of an ingenious magnetic separator developed by the company’s engineers.
PopularScience_19421101_0141_005_0071.xml
article
130
130,131,132,133
Home and Workshop
[no value]
Building Home-Movie Sets
[no value]
[no value]
[no value]
JACK OTTERSON
YOU may never attempt a defense film, which is proving an increasingly popular pastime these days, but every amateur wishes occasionally for a set against which to arrange his people and props. Either the walls in the living room are too dark, the bedroom is crowded, or some other difficulty interferes with easy shooting.
PopularScience_19421101_0141_005_0072.xml
article
132
132
[no value]
[no value]
Diffusing-Cloth Support That Folds Completely Made from Soft-Metal Calendar Binding
[no value]
[no value]
[no value]
JOHN MODROCH
DIFFUSING cloths for photoflood lamps are often mounted in homemade holders consisting of embroidery hoops and similar devices. They will take less space to pack away in the photographer’s kit, however, if the frame is omitted and they are supported by nothing more than the metal binding strip from an outdated wall calendar.
PopularScience_19421101_0141_005_0073.xml
article
134
134
Photography
[no value]
Cigar-Box Table Tripod Holds Camera and Accessories
Sparing Use of Acetic Acid Urged as War Uses Create Scarcity
[no value]
[no value]
[no value]
THIS combination table tripod and camera case has proved very practical for use with a light folding camera. It provides an adjustable tilting top, which can also be used on an ordinary tripod. For table-top use it can be raised by placing one or more books under it.
PopularScience_19421101_0141_005_0074.xml
article
135
135
Photography
[no value]
FOR CAMERA USERS
[no value]
[no value]
[no value]
[no value]
A PHOTOGRAPHIC EXPOSURE COMPUTER which will help photographers judge correct exposure time and camera lens opening—in any part of the world and at any time of the day in any month of the year—was recently completed by the American Standards Association.
PopularScience_19421101_0141_005_0075.xml
article
136
136
Photography
[no value]
Farm-Stock Feed Pan Serves as Efficient Print Washer
[no value]
[no value]
[no value]
EDWARD J. THATCHER
LISTED in mail-order catalogues as a “seamless hog pan” and also sold for a few cents at rural hardware stores, this pan can be transformed into a print washer that will handle a number of 8" by 10" or smaller prints. It is made from 24-gauge galvanized steel with no soldering or seams, has fluted sides, measures about 17" in diameter at the top and 14" at the bottom, and is 3½" deep.
PopularScience_19421101_0141_005_0076.xml
article
136
136
Photography
[no value]
Prints Straightened Quickly with Pair of Dowels
[no value]
[no value]
[no value]
[no value]
Two ⅜" or ½” wood dowels, sanded smooth and taped loosely together at one or both ends, will quickly take the curl out of single-weight or double-weight prints. Slip the end of each print between the dowels and pull it through, bending it over one dowel in the direction opposite its natural curvature.
PopularScience_19421101_0141_005_0077.xml
article
136
136
[no value]
[no value]
Measuring Linear Enlargement
[no value]
[no value]
[no value]
FRANK E. WARE
To DETERMINE for what linear magnification a photographic enlarger is focused, put a short transparent ruler in the negative holder, and measure the image of a 1" division on the easel with a second ruler. If it measures 3½", the magnification is 3½ diameters, and so on.
PopularScience_19421101_0141_005_0078.xml
article
137
137
Photography
[no value]
Diaphragm Stops in Spotlight Give Control of Shadows
[no value]
[no value]
[no value]
R. O. LISSAMAN
MANY homemade spotlights are in use, but none of these can be regarded as complete until equipped with either an iris diaphragm or diaphragm stops. An accompanying photograph and the drawing show an easy method of attaching sheet-metal disks with holes in them over a spotlight lens to serve as stops.
PopularScience_19421101_0141_005_0079.xml
article
137
137
[no value]
[no value]
Faults in Negatives Due to Overexposure and Underexposure
[no value]
[no value]
[no value]
[no value]
MODERN films have a wide exposure latitude, but few amateurs realize the difference faulty exposure makes in the quality of negatives. Overexposure causes large grain, loss of high-light detail and contrast, dense negatives, and a reddish hue in color films. Underexposure results in loss of the full-tone scale, too much contrast, lack of detail and shadows, thin negatives, and a bluish hue in color films.
PopularScience_19421101_0141_005_0080.xml
article
138
138,139,140,141
AUTOS
[no value]
Carburetors Need Care
IMPORTANT STEPS IN A CARBURETOR OVERHAUL TO RESTORE
[no value]
[no value]
SCHUYLER VAN DUYNE
KEEPING carburetors perking properly is of utmost importance to motorists today. Where strict fuel rationing is in effect, and wherever motorists are observing a self-imposed fuel economy, a good carburetor in good condition is worth as much as a generous extra measure in your gasoline tank.
PopularScience_19421101_0141_005_0081.xml
article
142
142
Automobiles
[no value]
Coupe Makes Emergency Ambulance for Three
[no value]
[no value]
[no value]
[no value]
BY REMOVING the cardboard partition between the front section and the turtleback of his small, four-cylinder coupe, a Los Angeles civilian defense worker has prepared the car for prompt conversion into an emergency ambulance. With the seat back taken out, a plywood floor six feet, seven inches long and three feet, 10 inches wide is laid across the space between the seat and the spare tire to accommodate a mattress or two stretchers.
PopularScience_19421101_0141_005_0082.xml
article
143
143
Automobiles
[no value]
IDEAS FOR MOTORISTS
[no value]
[no value]
[no value]
G.W.P.
D.B.J.
B.H.
J.N.
1 PROTECTIVE INSULATION for the hood of a car is provided by applying one or two coats of aluminum paint to the underside, as illustrated above. The paint, which can be obtained from most hardware stores, slows the progress of the engine heat upward, thus lengthening the life of the paint or enamel finish at the point where it usually deteriorates first and fastest on an aging automobile.
PopularScience_19421101_0141_005_0083.xml
article
144
144
Automobiles
[no value]
Auto Ideas
[no value]
[no value]
[no value]
[no value]
PAINTING MILES ON TIRES is now possible with a new type of liquid made from synthetic rubber that is simply put on with a brush. Any number of coats may be applied, each after the previous coat has dried. As shown in the illustration at the right, the substance is applied directly to the tread of a tire to build up a new traction surface.
PopularScience_19421101_0141_005_0084.xml
article
145
145,146,147,220
Automobiles
[no value]
Trouble comes double
But some people, Gus Wilson believes, deserve it. Especially if they neglect their cars and likewise play practical jokes
[no value]
[no value]
MARTIN BUNN
IT was getting close to four o’clock, and Gus Wilson, who had been busy all day, admitted to his Model Garage partner Joe Clark that he was just a little bored. “Plenty of work,” he told him, “but it’s all run-of-the-mine keep-’em-rolling jobs.”
PopularScience_19421101_0141_005_0085.xml
article
148
148
[no value]
[no value]
HOME and WORKSHOP
[no value]
[no value]
[no value]
[no value]
SKILLED HANDS TO SERVE AMERICA . . . FIRST OF A SERIES OF SHOP ARTICLES FOR MEN WHO ARE TRAINING FOR THE INDUSTRIAL FIRING LINE MACHINISTS FOR WAR WORK
PopularScience_19421101_0141_005_0086.xml
article
HW320A
HW320A,HW320B,HW320C,HW320D
Home and Workshop
[no value]
How to Use the Machinist's Steel Rule
[no value]
[no value]
[no value]
[no value]
GUNS, tanks, and planes, locomotives and ships, turbines and Diesel engines, cotton gins and rotary presses, all exist only in man’s imagination until they take shape on paper in the form of drawings. These guide the patternmaker, the foundryman, and finally the machinist in making parts that will later be assembled into a working whole.
PopularScience_19421101_0141_005_0087.xml
article
HW321
HW321,HW322,HW323,HW324,HW325
Home and Workshop
[no value]
Toy Army Tank
[no value]
[no value]
[no value]
CHARLES
BERTRAM BROWNOLD
A REALISTIC toy Army tank that will delight the heart of a young tank driver can be made of plywood and small pieces of hardwood. No metal parts are needed except a few nails and screws. Its construction is so simple, and it takes so little time, effort, and money, that it is an ideal Christmas present.
PopularScience_19421101_0141_005_0088.xml
article
HW325
HW325
Shop Data
[no value]
ELECTROGALVANIZING
[no value]
[no value]
[no value]
[no value]
Zinc is a good, cheap plating metal for protection without a high polish. Equivalent plating requires half as much as does dipping in molten zinc. Zinc is plated in either an acid or an alkaline (cyanide) solution. The former results in a brighter deposit, but it has less throwing power and is not suited for cast iron.
PopularScience_19421101_0141_005_0089.xml
article
HW326
HW326,HW327,HW328,HW329
Home and Workshop
[no value]
JIGSAW PUZZLES GO MILITARY
[no value]
[no value]
[no value]
W. L. FAUROT
WITH home amusements gaining in popularity, the ever-fascinating jigsaw puzzle is again winning favor. Such puzzles do not take much material, are fun to make, and entertaining to young and old. Furthermore, they can be put together by single puzzlers or by groups, for amusement only or in competition for prizes.
PopularScience_19421101_0141_005_0090.xml
article
HW329
HW329
Shop Data
[no value]
FINISHING LEATHER ARTICLES
[no value]
[no value]
[no value]
[no value]
Finish laced edges of leather articles by placing the laced edge on a smooth surface. Tap the lacing lightly with a smooth hammer. Clean and polish natural and dyed leather with saddle soap. Apply a thin coat with a soft damp cloth and rub the surface lightly.
PopularScience_19421101_0141_005_0091.xml
article
HW330
HW330,HW331
Woodworking
[no value]
Silver Chest
[no value]
[no value]
[no value]
JOSEPH ARONSON
THIS simple chest, which derives from the Colonial but will be equally harmonious with modern or Colonial furnishings, is a project well within the scope of the amateur cabinetmaker. It was planned as an accessory piece for a small dining room to hold silver both flat and tall, but it will just as well serve as a console chest in a hall, a record cabinet in the living room, a buffet server, or the like.
PopularScience_19421101_0141_005_0092.xml
article
HW332
HW332
New Shop Ideas
[no value]
Outside-Closing Collet Chucks Hold Work in Small Lathe
[no value]
[no value]
[no value]
G. S. LAWRENCE
THESE outside-closing collet chucks will take work up to the full diameter of the hole through the lathe spindle. They should be turned from tool steel so that they can be hardened and tempered, although, if necessary, they may be used unhardened.
PopularScience_19421101_0141_005_0093.xml
article
HW332
HW332
New Shop Ideas
[no value]
Micrometer Head and Anvil Form an Accurate Depth Gauge
[no value]
[no value]
[no value]
[no value]
Two ways to increase the scope of precision measuring instruments so that one will do the work of several are illustrated. Figure 1 shows how a standard micrometer head was fitted with an anvil to make it a highly accurate depth gauge. The anvil was machined from cold-rolled steel, casehardened, and chromium plated.
PopularScience_19421101_0141_005_0094.xml
article
HW333
HW333
Miscellaneous
[no value]
Question Bee
[no value]
[no value]
[no value]
[no value]
CHISELS date from earliest antiquity when men first began carving on stone. Today they are used in almost as many shapes and sizes as there are jobs to do, and are indispensable tools of workers engaged in industry and art. Some chisels are flat, others hollowed or saucered; their points and weights vary according to their intended use; some handles are socketed, others tanged, and some chisels have no wooden handles at all.
PopularScience_19421101_0141_005_0095.xml
article
HW334
HW334,HW335,HW336,HW337
Home and Workshop
[no value]
Curved Work ON THE Spindle Shaper
[no value]
[no value]
[no value]
EDWIN M. LOVE
CURVED work done on the spindle shaper really demonstrates the full scope of that versatile machine’s decorative possibilities, putting within reach of the home craftsman the professional touches usually associated with the fine woodwork in studios and showrooms.
PopularScience_19421101_0141_005_0096.xml
article
HW337
HW337
Woodworking
[no value]
Modernistic Candlestick with Double Shaping Cuts
[no value]
[no value]
[no value]
[no value]
Making this attractive piece will give the craftsman plenty of practice in double shaping cuts, as the accuracy of the quarter-rounds depends on careful adjustment of the cutters. The moldings can be made with standard knives. Use two hardwood blocks, preferably ripped from one piece of stock, for matching grain.
PopularScience_19421101_0141_005_0097.xml
article
HW338
HW338
Home Building
[no value]
IDEAS For HOME OWNERS
[no value]
[no value]
[no value]
[no value]
CORRUGATED FLOOR RUNNERS are being made of an asphalt composition to take the place of rubber in hallways, basements, and other places where a nonskid, waterproof covering is desired. Mats for smaller areas and treads for stairways are also available.
PopularScience_19421101_0141_005_0098.xml
article
HW339
HW339
Home Building
[no value]
BLACKOUT ACCESSORIES FOR THE HOME
[no value]
[no value]
[no value]
[no value]
A PAINTBRUSH WITHOUT BRISTLES, this roller has been developed for covering walls, ceilings, and other large surfaces, and is especially adapted for use with cold-water paints. The color is mixed as desired and a little poured into a cake pan or other flat, square container the width of the roller.
PopularScience_19421101_0141_005_0099.xml
article
HW340
HW340
Cnaftwork
[no value]
Salty Sam
A NOVEL SALT AND PEPPER SET
[no value]
[no value]
[no value]
FOR the craftsman in wood who aspires to some very simple figure work, here is a salt shaker in naval style—a sailorman. The example shown was made of mahogany, and the head was finished a natural wood color with shellac only. Mount a 1½" by l½" by 3¾" turning square between lathe centers and turn the head, cap and neck.
PopularScience_19421101_0141_005_0100.xml
article
HW341
HW341
New Shop Ideas
[no value]
Copper Gauze Keeps Handle of Soldering Iron Cool
[no value]
[no value]
[no value]
W. C. WILHITE
SOME modern electric soldering irons have fins that dissipate the heat and prevent the handle from getting uncomfortably hot. If yours is not so equipped, you can keep the handle cool by wrapping copper gauze from an old kitchen scouring pad around the shank as shown in the accompanying photograph.
PopularScience_19421101_0141_005_0101.xml
article
HW341
HW341
[no value]
[no value]
Slotting End of Bicycle Axle Aids in Tightening Nut
[no value]
[no value]
[no value]
R. B.
WHILE fixing my bicycle recently, it was necessary to hold the axle rigid so that I could tighten the nut that keeps the axle in the frame. I found that by slotting the end of the axle with a hack saw, I could easily hold it stationary with a screw driver while tightening the axle nut with a wrench in the usual way.
PopularScience_19421101_0141_005_0102.xml
article
HW341
HW341
[no value]
[no value]
Knife for Mounting Snapshots Made from Steel Pen
[no value]
[no value]
[no value]
OLIVER BANDELIER
A HANDY knife for making double cuts in album pages to receive the corners of photographic prints can be made by inserting a steel pen nib, point first, in a penholder and sharpening both edges. Use the print to locate the CUTS.
PopularScience_19421101_0141_005_0103.xml
article
HW341
HW341
Shop Data
[no value]
TYPES OF SOCKETS TO USE
[no value]
[no value]
[no value]
[no value]
The choice of an electrical socket or receptacle should be governed by its intended purpose and by the location in which it is to be installed. Where the floor is often damp or wet, or of a conducting substance such as soil or metal, porcelain or composition sockets are required to lessen the likelihood of shocks.
PopularScience_19421101_0141_005_0104.xml
article
HW342
HW342,HW343,HW344,HW345,HW346
New Shop Ideas
[no value]
High Speed Drill
BUILT TO FIT LATHE TAILSTOCK
[no value]
[no value]
C. W. WOODSON
SHOPS engaged in making certain types of small parts for war production will find this high-speed lathe tailstock drill a timesaving attachment. If castings cannot be obtained, it might be constructed from steel plate and shafting, welded together.
PopularScience_19421101_0141_005_0105.xml
article
HW347
HW347
Woodworking
[no value]
Improvised Wood-Boring Tool Makes Smooth-Bottom Holes
[no value]
[no value]
[no value]
L. L. GIBSON
IN MAKING a poker-chip rack and similar work, the boring of flat-bottom holes presents difficulties. A centerless wood bit will do the trick if the right size is at hand. In the absence of such a bit, a tool may be improvised by turning a piece of hardwood to the dimensions given below and driving into its end two corrugated fasteners with the edges filed and sharpened as shown.
PopularScience_19421101_0141_005_0106.xml
article
HW347
HW347
New Shop Ideas
[no value]
Jig Forms Right-Angle Bends in Wide Sheet-Metal Work
[no value]
[no value]
[no value]
R. BOETTINGER
NEAT right-angle bends in sheet metal up to 27" wide can be formed easily with a simple jig made from a 64" length of ⅛" by 1" by 1" angle iron. A section 4" long is cut out of one side and the piece is bent double at the center of this part so that the sides touch.
PopularScience_19421101_0141_005_0107.xml
article
HW347
HW347
Shop Data
[no value]
CUTTING SPEEDS FOR DRILLS
[no value]
[no value]
[no value]
[no value]
The most efficient cutting speed for drills varies with the material being worked, the feed, and the coolant or lubricant used. For drills up to ¼", the feed may be from .001" to .0045" per revolution. The following table gives suggested starting speeds in feet per minute for high-speed steel drills only.
PopularScience_19421101_0141_005_0108.xml
article
HW348
HW348,HW349
Home Building
[no value]
Converting Oil Burners to Use Coal or Coke
CARL T. SIGMAN DISCUSSES THE PROS AND CONS OF AN ACUTE PROBLEM BROUGHT ON BY WARTIME SHORTAGES
[no value]
[no value]
[no value]
SHALL I convert my oil burner to coal or not? That is the question troubling some hundreds of thousands of users of oil fuel who live along the Atlantic seaboard and in Oregon and Washington. To these two areas, so far apart, oil has come largely by tankers, and there’s the rub, because some of them are now at the bottom of the sea and others are carrying high-octane gasoline and engine oils to faraway places to help win the war.
PopularScience_19421101_0141_005_0109.xml
article
HW350
HW350,HW351
Woodworking
[no value]
Bed Tray AND Folding Cot
Sturdy, Comfortable Items Made for Civilian-Defense Emergency Hospital Center in Easily Stored Units
MATERIALS FOR FOLDING COT
[no value]
[no value]
[no value]
TO MEET the need for a sturdy, comfortable cot for use in emergency hospital centers, C. E. Beane, of the Long Beach (Calif.) Homecrafters, designed the cot illustrated on the facing page. It meets requirements set up by Dr. Robert Wilcox, head of Medical Service for Civilian Defense for Long Beach.
PopularScience_19421101_0141_005_0110.xml
article
HW352
HW352,HW353,HW354
Cnaftwork
[no value]
Gift Craftwork
TWO-EVENING PROJECTS DESIGNED FOR ECONOMY IN MATERIAL
[no value]
[no value]
ERNEST R. DEWALT
REVOLVING BOOKCASE. An ample quantity of reference material can be stocked in this small bookcase, making it a handy filing unit on the desk of student or research worker. Economy of materials adds purpose to the design in this day of material shortages.
PopularScience_19421101_0141_005_0111.xml
article
HW355
HW355
New Shop Ideas
[no value]
Single Grinding Gives Tool Bits Correct Clearance Angle
[no value]
[no value]
[no value]
HENRY LARABY
HERE is a simple type of fixture used by the gauge makers of a large arms company to grind tool bits to the correct thread angle for precision thread cutting. This is one of the handiest and most-used accessories in the tool room. It will hold a standard size ¼" tool bit so that it may be ground to the correct angle in a very few minutes without any extra work in grinding the necessary clearance.
PopularScience_19421101_0141_005_0112.xml
article
HW355
HW355
New Shop Ideas
[no value]
Lag Screws Keep Bench Level Without Blocks
[no value]
[no value]
[no value]
JOHN W. CAMPBELL
IF A LIGHT bench must be level for precision work, but is not to be fastened to the floor, lag screws set in the feet as shown will allow it to be set up quickly without the use of blocks. Bore the holes to a close fit so that the screws turn in firmly for the last inch of their length.
PopularScience_19421101_0141_005_0113.xml
article
HW355
HW355
Shop Data
[no value]
PATCHING PLASTER OR CRACK FILLER
[no value]
[no value]
[no value]
[no value]
An inexpensive patching plaster or crack filler may be made as follows: Plaster of Paris 1 lb. Casein glue or canary dextrin 2 oz. Whiting or Fuller’s earth 2 oz. Dental plaster of Paris, if available, is better than the ordinary grade because it does not shrink so much.
PopularScience_19421101_0141_005_0114.xml
article
HW356
HW356,HW357
Miscellaneous
[no value]
KEEPING THE HOME SHIPSHAPE
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0115.xml
article
HW358
HW358,HW359
Home Building
[no value]
Housekeeping Aids
Tips on Using Your Kitchen Range
[no value]
[no value]
[no value]
CLEAN the porcelain surface after each cooking. Wait for the range to cool, use warm, soapy water, and then wipe dry. Wipe off fruit juices, milk, or vinegar at once, as their acids cause stains. Use the size burner to suit the utensil—the largest one for large skillets, the smallest for the coffee pot.
PopularScience_19421101_0141_005_0116.xml
article
HW360
HW360,HW361,HW362,HW363
Home and Workshop
[no value]
Fighting Rust in the Shop
[no value]
[no value]
[no value]
WALTER E. BURTON
THE other day, while in a three-man shop, I noticed a pungent odor in the air. It got stronger as I walked toward a bench where a man was wrapping the small, high-speed steel milling cutters this shop makes. “What’s the funny smell?” I asked. “It comes from this soup,” he said, pointing to a coffee can.
PopularScience_19421101_0141_005_0117.xml
article
HW361
HW361
Shop Data
[no value]
RUSTPROOFING METAL ARTICLES
[no value]
[no value]
[no value]
[no value]
In general, paints and lacquers give maximum protection, but can be applied only to unmachined surfaces. Oil, wax and grease films provide protection for a limited period ranging from a few weeks to several months. Articles coated with such films may be wrapped in paper, cellulose film, or cloth as an additional safeguard.
PopularScience_19421101_0141_005_0118.xml
article
HW364
HW364
Woodworking
[no value]
Blade Retainer Aids in Using Coping Saw for Inside Cuts
[no value]
[no value]
[no value]
XURY R. SETTLE
WHERE much inside sawing must be done, time is lost and delicate work may be broken by fumbling if the lower end of the coping-saw blade comes loose while the craftsman is trying to insert the upper end. A short piece of rubber tubing, with a hole punched in it so that it may be slipped over the rear pin as shown, will keep the blade in the groove and end this annoyance at the same time.
PopularScience_19421101_0141_005_0119.xml
article
HW364
HW364
New Shop Ideas
[no value]
Guide of Steel Used to Start Die Close to Conduit Bends
[no value]
[no value]
[no value]
R. A. ANDERSON
WHEN installing conduit, it is sometimes absolutely necessary to thread a pipe close into the bend. However, even with a solid block die, which has the shortest follower or guide, the follower may hit and bind in the bend. The solution is to reverse both the stock and die, but then it is difficult to start the die straight because there is no guide.
PopularScience_19421101_0141_005_0120.xml
article
HW364
HW364
Woodworking
[no value]
Use of Hollow-Head Setscrew Improves Scroll-Saw Chuck
[no value]
[no value]
[no value]
R. M. WOODBURY
To END frequent stripping of the thumbscrew in a scroll-saw chuck, the hole was drilled and retapped, as above, for a standard hollow-head setscrew. The long-handled wrench makes tightening under the saw table easier.
PopularScience_19421101_0141_005_0121.xml
article
HW364
HW364
Shop Data
[no value]
PAINT SPOTS ON CLOTHING
[no value]
[no value]
[no value]
[no value]
For cleaning paint spots from clothing, the following formula may be used : Chloroform 15 parts Ether 10 parts Alcohol 100 parts Carbon tetrachloride 25 parts These can usually be obtained from a drug-supply house or druggist, although it may be necessary to explain what you want the chloroform for.
PopularScience_19421101_0141_005_0122.xml
article
HW365
HW365,HW366,HW367,HW368,HW369
Home and Workshop
[no value]
How to Fix Cracked Masonry
REPAIRING AND WATERPROOFING BRICK AND STUCCO WALLS
[no value]
[no value]
William J. Ward
UNLIKE a cut finger, cracks in a building wall never heal. So, if there are cracks in the brick or stucco of your home, repair them now before winter sets in. Neglect may make the job much more costly later on. Cracks in stucco may result from improper ingredients, mixing, or application, movement of the lath base, unequal settlement of the structure, or a combination of these things.
PopularScience_19421101_0141_005_0123.xml
article
HW369
HW369
Miscellaneous
[no value]
Bicycle Lock Held on Frame in Handy Spool Socket
[no value]
[no value]
[no value]
HARVEY OLANDER
A BICYCLE padlock, if carried in a pocket, is hard on clothing; if simply snapped to the frame, it is noisy. Here is an easy way to avoid both troubles. A couple of thread spools are sawed as shown to fit snugly against the bottom bar, and are lashed to it with tire tape or with fishline, as illustrated.
PopularScience_19421101_0141_005_0124.xml
article
HW369
HW369
Home Building
[no value]
Coal Booster Saves Fuel Oil in Hot-Water Heating System
[no value]
[no value]
[no value]
HUGH B. AYER
WHERE the supply of fuel oil is limited or shortages are likely, this simple method of “converting” a hot-water heating system so that it operates largely on coal may mean the difference between a comfortable home and one that is barely livable.
PopularScience_19421101_0141_005_0125.xml
article
HW370
HW370,HW371
Cnaftwork
[no value]
MODEL-RAILWAY SWITCHWORK
2. THE LEADS
[no value]
[no value]
DAVID MARSHALL
TO BUILD any turnout (see Fig. 1), the first step is to fashion the tongue of the frog; and this you may do by simply mitering the two rails FG and FH. In our previous discussion of the frog (page HW 304), we set forth an easier method. But the method is not vital; the essential thing is to bring the two rails together at the required angle.
PopularScience_19421101_0141_005_0126.xml
article
HW372
HW372,HW373,HW374,HW375
Home and Workshop
[no value]
Having Fun with a Microscope
FASCINATING HOBBY OPENS NEW WORLDS OF WONDER TO YOUR EYES
With an Instrument and Some Inexpensive Equipment, You Can Start a Collection
[no value]
[no value]
WALTER E. BURTON
IF YOU could increase the size of a baseball a thousand diameters, it would cover an acre of ground. Yet, with an ordinary laboratory microscope such as physicians use, you can make a tiny diatom or bacterium look that much bigger than it actually is!
PopularScience_19421101_0141_005_0127.xml
article
HW376
HW376,HW377
Miscellaneous
[no value]
Tests Show How Your Heating Plant Works
[no value]
[no value]
[no value]
[no value]
WHERE there’s soot, there’s wasted fuel —a good thing for home owners to keep in mind this winter. Why it forms, and how to prevent it, may be seen in the first of the simple experiments on these pages. Others illustrate the difference between heat and temperature; demonstrate how hot-water and warm-air heating systems work; and explain why homes need humidification for health and comfort in winter.
PopularScience_19421101_0141_005_0128.xml
article
HW378
HW378,HW379,HW380
Miscellaneous
[no value]
SUGAR . . . . VITAL FOOD FOR MEN AND GUNS
[no value]
[no value]
[no value]
[no value]
SUGAR, front-page news not long ago as America’s first war-rationed article, is depended upon to supply concentrated energy to the men at the front and the people at home. It is the raw material for millions of gallons of alcohol, essential in making smokeless powder.
PopularScience_19421101_0141_005_0129.xml
article
HW381
HW381
Home and Workshop
[no value]
Radio Ideas
[no value]
[no value]
[no value]
[no value]
AUTOMATIC AIR-RAID WARNINGS are sounded by this attachment which may be connected to any radio receiver without interference with program reception during normal use. A switch keeps the device on guard when the radio is turned off. It is kept turned to a 24-hour “alert” station, and its warning note will awaken sleepers.
PopularScience_19421101_0141_005_0130.xml
article
HW382
HW382,HW383
[no value]
[no value]
COMBINATION RADIO RECEIVER AND AMPLIFIER
LIST OF PARTS
[no value]
[no value]
ARTHUR C. MILLER
USING an inverted metal letter holder, found in most stationery stores, instead of the usual steel radio chassis, this instrument combines into one unit a TRF broadcast receiver and high fidelity P.A. amplifier. By an unusual circuit arrangement all five tubes are in operation when the instrument is in use either as a radio receiver or as a Public Address amplifier, that is, the radio frequency stage and detector stage double as the first two stages of the P.A. amplifier.
PopularScience_19421101_0141_005_0131.xml
article
HW384
HW384
[no value]
[no value]
Servicing Your Radio-PART 7
[no value]
[no value]
[no value]
[no value]
SOME of the most annoying experiences with old-model receivers or new models that have been in use for some time are caused by humming. This can be traced to several sources, most of them within the scope of the amateur repair man. Among the most frequent are hum in the phonograph of a combination set or in an oldertype electrodynamic speaker, or that caused by a broken filament resistor, weak or gassy tube, or faulty electrolytic condenser.
PopularScience_19421101_0141_005_0132.xml
advertisement
217
217
[no value]
[no value]
CHAMPION SPARK PLUGS
[no value]
CHAMPION SPARK PLUGS
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0133.xml
advertisement
218
218,219
[no value]
[no value]
NATIONAL CARBON COMPANY, INC.
[no value]
NATIONAL CARBON COMPANY, INC.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0134.xml
advertisement
220
220
[no value]
[no value]
WESTERN CARTRIDGE COMPANY
[no value]
WESTERN CARTRIDGE COMPANY
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0135.xml
advertisement
221
221
[no value]
[no value]
WITTE ENGINE WORKS
[no value]
WITTE ENGINE WORKS
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0136.xml
advertisement
222
222
[no value]
[no value]
NICHOLSON FILE CO.
[no value]
NICHOLSON FILE CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0137.xml
advertisement
223
223
[no value]
[no value]
Atlas Press Company
[no value]
Atlas Press Company
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0138.xml
advertisement
224
224
[no value]
[no value]
THE CARBORUNDUM COMPANY
[no value]
THE CARBORUNDUM COMPANY
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0139.xml
advertisement
225
225
[no value]
[no value]
O. F. Mossberg and Sons, inc.
[no value]
O. F. Mossberg and Sons, inc.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0140.xml
advertisement
226
226
[no value]
[no value]
E. C. ATKINS AND COMPANY
[no value]
E. C. ATKINS AND COMPANY
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0141.xml
advertisement
226
226
[no value]
[no value]
Advertisement: Popular Science Monthly
[no value]
[no value]
Popular Science Monthly
[no value]
[no value]
PopularScience_19421101_0141_005_0142.xml
advertisement
227
227
[no value]
[no value]
U.S.Army
[no value]
U.S.Army
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0143.xml
advertisement
228
228
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0144.xml
advertisement
229
229
[no value]
[no value]
Smooth-On Manufacturing Co.
[no value]
Smooth-On Manufacturing Co.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0145.xml
advertisement
230
230
[no value]
[no value]
The Hygienic Products Co.
[no value]
The Hygienic Products Co.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0146.xml
advertisement
230
230
[no value]
[no value]
D. W. ONAN & SONS
[no value]
D. W. ONAN & SONS
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0147.xml
advertisement
231
231
[no value]
[no value]
DELTA MILWAUKEE
[no value]
DELTA MILWAUKEE
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0148.xml
advertisement
232
232
[no value]
[no value]
AC SPARK PLUG DIVISION
[no value]
AC SPARK PLUG DIVISION
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0149.xml
advertisement
233
233
[no value]
[no value]
CASEIN COMPANY
[no value]
CASEIN COMPANY
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0150.xml
advertisement
234
234
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0151.xml
advertisement
234
234
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0152.xml
advertisement
234
234
[no value]
[no value]
SYNCRO DEVICES, INC.
[no value]
SYNCRO DEVICES, INC.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0153.xml
advertisement
235
235
[no value]
[no value]
W.L. DOUGLAS SHOE CO
[no value]
W.L. DOUGLAS SHOE CO
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0154.xml
advertisement
235
235
[no value]
[no value]
STANLEY TOOLS
[no value]
STANLEY TOOLS
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0155.xml
advertisement
235
235
[no value]
[no value]
DELTA ELECTRIC CO.
[no value]
DELTA ELECTRIC CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0156.xml
advertisement
235
235
[no value]
[no value]
The HOBART SCHOOL OF ARC WELDING
[no value]
The HOBART SCHOOL OF ARC WELDING
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0157.xml
article
236
236
[no value]
[no value]
Red Cross Offers War Bonds in National Photo Contest
[no value]
[no value]
[no value]
[no value]
BY ENTERING a national photographic competition just announced by the American Red Cross, camera enthusiasts will have an excellent opportunity to apply many of the suggestions which have appeared recently in POPULAR SCIENCE on taking defense pictures, lighting, printing, and other topics.
PopularScience_19421101_0141_005_0158.xml
advertisement
236
236
[no value]
[no value]
Schult Trailers
[no value]
Schult Trailers
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0159.xml
advertisement
236
236
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0160.xml
advertisement
236
236
[no value]
[no value]
N. Y. Institute of Photography
[no value]
N. Y. Institute of Photography
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0161.xml
advertisement
236
236
[no value]
[no value]
Latayette RADIO CORP.
[no value]
Latayette RADIO CORP.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0162.xml
advertisement
237
237
[no value]
[no value]
UNITED STATES PLYWOOD CORPORATION
[no value]
UNITED STATES PLYWOOD CORPORATION
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0163.xml
advertisement
237
237
[no value]
[no value]
HENRY DISSTON & SONS, INC.
[no value]
HENRY DISSTON & SONS, INC.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0164.xml
advertisement
237
237
[no value]
[no value]
HARLEY-DAVIDSON MOTOR CO.
[no value]
HARLEY-DAVIDSON MOTOR CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0165.xml
advertisement
238
238
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0166.xml
article
239
239
[no value]
[no value]
Direct-Reading Densitometer
[no value]
[no value]
[no value]
[no value]
A NEW densitometer gives rapid direct readings of negatives in terms of photographic density. Light from a small lamp passes through the film to a photoelectric tube, where it varies the flow of an electric current in proportion to its intensity.
PopularScience_19421101_0141_005_0167.xml
article
239
239
[no value]
[no value]
Mast Lights of Ship Model Have Concealed Wires
[no value]
[no value]
[no value]
PAUL H. SMITH
BECAUSE of the difficulty involved in drilling a hole through the length of a shipmodel mast for lights, some model makers run the wires on the outside, with amateurish results. If the dowel from which the mast is to be made is first split lengthwise, either with a saw or a sharp knife, and a groove is then cut for the wires, the two portions may be glued back together and shaped as desired.
PopularScience_19421101_0141_005_0168.xml
advertisement
239
239
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0169.xml
advertisement
239
239
[no value]
[no value]
John A. Sandstrom
[no value]
John A. Sandstrom
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0170.xml
advertisement
239
239
[no value]
[no value]
FRANKLIN PRODUCTS CO.
[no value]
FRANKLIN PRODUCTS CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0171.xml
advertisement
239
239
[no value]
[no value]
INDIAN MOTOCYCLE CO.
[no value]
INDIAN MOTOCYCLE CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0172.xml
article
240
240
[no value]
[no value]
Lens-Opening Cover Is Made of Fiber Instead of Metal
[no value]
[no value]
[no value]
[no value]
MANY photographers remove the lens from their camera for use in an enlarger, or for greater safety when carrying equipment about. During such times, however, dust and dirt may enter the camera through the lens opening, and later cause specks or scratches on negatives.
PopularScience_19421101_0141_005_0173.xml
article
240
240
[no value]
[no value]
Determining Exhaustion Point of an Acid Fixing Bath
[no value]
[no value]
[no value]
J. H. W.
EVERY photographer realizes the value of using fresh hypo to fix his prints, but he often throws away the solution when it is still good. A quart of acid fixing bath is suitable for 2,000 sq. in. of print surface if care is taken to wash the prints thoroughly of all developer before transferring them to the bath.
PopularScience_19421101_0141_005_0174.xml
advertisement
240
240
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0175.xml
advertisement
240
240
[no value]
[no value]
J. W. MORTELL CO.
[no value]
J. W. MORTELL CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0176.xml
advertisement
241
241
[no value]
[no value]
Advertisement: POPULAR SCIENCE
[no value]
[no value]
POPULAR SCIENCE
[no value]
[no value]
PopularScience_19421101_0141_005_0177.xml
advertisement
241
241
[no value]
[no value]
Postal Life Insurance Company
[no value]
Postal Life Insurance Company
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0178.xml
article
242
242
[no value]
[no value]
Improper Setting May Damage a High-Grade Hand Saw
[no value]
[no value]
[no value]
[no value]
COMPLAINTS are sometimes made by amateur woodworkers that their hand saws do not cut smoothly after they have been resharpened by professional saw refitters. This may be true even if a saw-filing machine has been used and the teeth are perfectly even and very sharp.
PopularScience_19421101_0141_005_0179.xml
article
242
242
[no value]
[no value]
Stains on Plaster Cleaned with Sodium Perborate
[no value]
[no value]
[no value]
R. G. YOUNG
IT HAS been found that sodium perborate is fairly satisfactory for removing ring stains left on a plaster wall where rain has leaked through. A small amount is sprinkled on a cloth moistened in warm water, the cloth is rubbed over the stain, and the process is repeated if necessary until the stain becomes inconspicuous or disappears.
PopularScience_19421101_0141_005_0180.xml
article
242
242
[no value]
[no value]
How to Repolish Pipe Stems
[no value]
[no value]
[no value]
[no value]
SCRATCHES and tooth marks can be removed from the stem of your favorite pipe and its original luster restored by the following method: Rub down the blemishes with fine sandpaper, then use powdered pumice on a damp cloth to remove the sandpaper scratches and discolorations.
PopularScience_19421101_0141_005_0181.xml
article
242
242
[no value]
[no value]
Storing Woolen Bathing Suits Safely
[no value]
[no value]
[no value]
R. W.
A WOOLEN bathing suit can be kept absolutely safe from moths throughout the winter by rolling it up tightly and storing it in a 1-qt. coffee can or Mason jar with a tight-fitting lid. Be sure the suit is absolutely dry before putting it away.
PopularScience_19421101_0141_005_0182.xml
advertisement
242
242
[no value]
[no value]
UNDERWOOD ELLIOTT FISHER COMPANY
[no value]
UNDERWOOD ELLIOTT FISHER COMPANY
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0183.xml
advertisement
242
242
[no value]
[no value]
HEWIG CO.
[no value]
HEWIG CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0184.xml
advertisement
242
242
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0185.xml
advertisement
242
242
[no value]
[no value]
CALCULATOR MACHINE COMPANY
[no value]
CALCULATOR MACHINE COMPANY
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0186.xml
advertisement
243
243
[no value]
[no value]
THE MARLIN FIREARMS CO.
[no value]
THE MARLIN FIREARMS CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0187.xml
advertisement
243
243
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0188.xml
advertisement
243
243
[no value]
[no value]
CRAFTSMAN WOOD SERVICE CO.
[no value]
CRAFTSMAN WOOD SERVICE CO.
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0189.xml
advertisement
243
243
[no value]
[no value]
THE WARNER & SWASEY COMPANY
[no value]
THE WARNER & SWASEY COMPANY
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0190.xml
advertisement
244
244
[no value]
[no value]
SOUTH BEND LATHE WORKS
[no value]
SOUTH BEND LATHE WORKS
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0191.xml
advertisement
245
245
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19421101_0141_005_0192.xml
advertisement
246
246
[no value]
[no value]
R. J. Reynolds Tobacco Co.: Camel
[no value]
R. J. Reynolds Tobacco Co.
Camel
[no value]
[no value]
PopularScience_19421101_0141_005_0193.xml