Issue: 19410101

Wednesday, January 1, 1941
JAN. 1941
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138
Wednesday, December 31, 2014

Articles
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POPULAR SCIENCE MONTHLY
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PopularScience_19410101_0138_001_0001.xml
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PopularScience_19410101_0138_001_0002.xml
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Advertisement
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PopularScience_19410101_0138_001_0003.xml
masthead
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POPULAR SCIENCE MONTHLY
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PopularScience_19410101_0138_001_0004.xml
tableOfContents
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2,4,6
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CONTENTS for JANUARY, 1941
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PopularScience_19410101_0138_001_0005.xml
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3
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19410101_0138_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_19410101_0138_001_0007.xml
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6
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MASONITE CORPORATION
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MASONITE CORPORATION
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PopularScience_19410101_0138_001_0008.xml
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7
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LaSalle Extension University
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LaSalle Extension University
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PopularScience_19410101_0138_001_0009.xml
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8
8
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Advertisement: BOND STREET PIPE TOBACCO
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BOND STREET PIPE TOBACCO
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PopularScience_19410101_0138_001_0010.xml
article
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8
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Coming Next Month—
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ERIC SCHAAL, well-known photographer, and Hickman Powell, ace reporter, have joined forces to bring POPULAR SCIENCE readers the latest news in the glue industry. In “Plastic Glue for Everybody,” they tell the dramatic story of a brand-new development from the synthetic chemist’s laboratory—a development that now places at the disposal of the home owner and the home craftsman a revolutionary glue formerly available only to manufacturers.
PopularScience_19410101_0138_001_0011.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_19410101_0138_001_0012.xml
article
10
10
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From The News Editor's Desk
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NONSHRINKABLE WOOL may soon become more than a housewives’ dream. Two years of research in treating wool yarn with a bromine process have convinced the Warner Chemical Co., of New York, that it has found a method of preventing shrinking which does not affect the wool’s warmth, softness, or dyeability.
PopularScience_19410101_0138_001_0013.xml
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11
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J. E. SMITH
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J. E. SMITH
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PopularScience_19410101_0138_001_0014.xml
article
12
12,14
Reader Say:
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Reader Say:
Cameraman Catches Kids Having Fun at the Zoo
The Cannon-Ball Express
Mobilize the Home Workshops for National Defense!
A Stamp Licked Nicaragua's Canal
It's Money in His Pocket To Read P. S. M.
Chain of Padlocks Tells Who Left the Gate Open
Economical Boat Builder Shaves a Nickel off Our Estimated Cost
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YOUR readers may be interested to know that the youthful models who posed for the pictures in the “Mechanized Zoo” story (page 104) are my son, Peter William Morris, aged 2, and Joy Krumm, 4. Peter William began his photographic career by posing at the New York World’s Fair with William Allen White, who called him “the most photogenic baby in the world.”
PopularScience_19410101_0138_001_0015.xml
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13
13
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CLARENCE A. O'BRIEN
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CLARENCE A. O'BRIEN
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PopularScience_19410101_0138_001_0016.xml
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15
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Advertisements
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PopularScience_19410101_0138_001_0017.xml
article
16
16
Helpful Inventions for the Home Owner
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Helpful Inventions for the Home Owner
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PopularScience_19410101_0138_001_0018.xml
article
16
16
Home and Farm
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Special Glue Holds Anything —It's Weatherproof, Too
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RESISTANT to weather and insoluble in water, a versatile glue of special composition may be applied to virtually any similar or dissimilar materials. Two pieces of wood glued together with it will never warp, it is said. The quick-drying adhesive may be used hot or cold, and a film of only tissue thickness is sufficient.
PopularScience_19410101_0138_001_0019.xml
article
16
16
Home and Farm
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Metal Building Blocks Resist Fire, Vermin
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“BUILDING BLOCKS” stamped out of noncorrosive steel provide a speedy and economical way of constructing small dwellings, apartment houses, and office buildings alike. They weigh only two pounds apiece, compared to fifty pounds for concrete blocks of the same standard size, and are declared to eliminate waste of material.
PopularScience_19410101_0138_001_0020.xml
article
16
16
Home and Farm
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“Erosion Net“ Keeps Seed from Washing off Lawn
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HEAVY rains cannot wash away freshly planted grass seed from slopes protected with “erosion nets,” successfully introduced last fall. Laid over the soil, a quarter-inch mesh of rot-resisting paper twine forms innumerable tiny dams, holding the seed in place without cutting off beneficial sunlight.
PopularScience_19410101_0138_001_0021.xml
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17
17
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Advertisements
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PopularScience_19410101_0138_001_0022.xml
article
18
18
Home and Farm
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Outfit for Home Welding Has Everything you Need
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To AID the handy man who makes his own home repairs, a compact kit provides everything needed for electric welding and brazing. Besides a power unit to be plugged into any socket, A.C. or D.C., it includes a holder, two carbons, rods, and fluxes.
PopularScience_19410101_0138_001_0023.xml
article
18
18
Home and Farm
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Versatile Electric Hand Tool Works Soft Metals, Leather
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MAKING candlesticks, ash trays, and other artistic pieces becomes easy for the owner of a lightweight electric hand tool. Its reciprocating plunger takes interchangeable heads for hammering, filing, chasing, and engraving soft metals, such as copper, brass, silver, aluminum, and pewter.
PopularScience_19410101_0138_001_0024.xml
article
18
18
Home and Farm
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Insulating Lath Board Is Resistant to Fire
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FOR FIRE protection, an insulating lath board interlaces wood fibers with minute flakes of vermiculite, a mineral related to mica. Partitions made by covering it with poultry wire and plaster hold back flames at least an hour, underwriters’ tests show.
PopularScience_19410101_0138_001_0025.xml
article
18
18
Home and Farm
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Economical Midget Oil Burner for Heating the Small Home
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DESIGNED only to heat small homes, of six or seven rooms, a midget oil burner offers unusual economy by consuming less than a gallon of No. 3 oil during an hour’s operation. Complete with room thermostat and automatic safety controls, the burner is of the vaporizing type.
PopularScience_19410101_0138_001_0026.xml
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PopularScience_19410101_0138_001_0027.xml
article
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20,22,23
With the Inventors
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With the Inventors
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JUST what a movie patron will see on the screen of a movie theater, when he goes in, may be learned from an indicator to be mounted near the ticket window. Thus he can avoid sitting through an unfinished part of a program, and enter at just the right time for the beginning of the feature, newsreel, or comedy, as he prefers.
PopularScience_19410101_0138_001_0028.xml
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21
21
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VICTOR J. EVANS & CO.
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VICTOR J. EVANS & CO.
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PopularScience_19410101_0138_001_0029.xml
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22
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PopularScience_19410101_0138_001_0030.xml
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23
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McMORROW & BERMAN
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McMORROW & BERMAN
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PopularScience_19410101_0138_001_0031.xml
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24
24,25
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Advertisement: POPULAR SCIENCE
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POPULAR SCIENCE
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PopularScience_19410101_0138_001_0032.xml
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26
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Advertisements
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PopularScience_19410101_0138_001_0033.xml
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27
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Advertisements
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PopularScience_19410101_0138_001_0034.xml
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28
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Advertisements
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PopularScience_19410101_0138_001_0035.xml
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29
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PopularScience_19410101_0138_001_0036.xml
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PopularScience_19410101_0138_001_0037.xml
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PopularScience_19410101_0138_001_0038.xml
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32
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Advertisement: Popular Science Monthly
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Popular Science Monthly
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PopularScience_19410101_0138_001_0039.xml
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33
33,34,35,36,37,38,39,40
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POPULAR SCIENCE Classified OPPORTUNITIES
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PopularScience_19410101_0138_001_0040.xml
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41
41
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PopularScience_19410101_0138_001_0041.xml
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42
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PopularScience_19410101_0138_001_0042.xml
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PopularScience_19410101_0138_001_0043.xml
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PopularScience_19410101_0138_001_0044.xml
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PopularScience_19410101_0138_001_0045.xml
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46
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Advertisement: PRINCE ALBERT
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PRINCE ALBERT
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PopularScience_19410101_0138_001_0046.xml
article
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47,48,49,50,51,52,53
News
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SOLDIER 1941
A ROOKIE GETS HIS FIRST TASTE OF ARMY LIFE
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LAWRENCE OTIES THOMPSON, of Norwich, N. Y., entered a new world over a recent week-end—a world of precision in which several hundred thousand young Americans will dwell with him within the next few months. On a Friday Larry was wrestling scrap iron in the freight yard of the Erie Railroad at $2 a day; on the following Monday he was wrestling with the somewhat bewildering impact of army life at $21 a month and “found.”
PopularScience_19410101_0138_001_0047.xml
article
54
54
Military
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What U.S. Army's Insignia Tell You About a Soldier
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CAN you tell a cobnel from a private by the insignia on his uniform? In the column at the left appear the insignia of every Army rank from a firstclass private to a general. At the right are the insignia for identifying arms or branches in the U. S. Army.
PopularScience_19410101_0138_001_0048.xml
article
55
55
Inventions
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Dog Leash on Spring Reel Plays Fido Like a Fish
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A LEASH attached to a spring-operated reel is a new wrinkle for dog owners. Encased in a light but sturdy aluminum housing, the reel carries twelve feet of waterproofed leash strong enough to hold a great Dane yet light enough for use with a Pekinese.
PopularScience_19410101_0138_001_0049.xml
article
55
55
Inventions
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Individual Roasters "Home-Cook" Food for Restaurant
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TO ASSURE his customers that “home-cooked” flavor, Ros Gammon, Pittsburgh restaurateur, has installed a battery of eighteen electric roaster ovens of the type designed especially for home use. If the patron desires it, waiters will wheel an individual roaster to his table, where he may watch his meal being cooked.
PopularScience_19410101_0138_001_0050.xml
article
56
56,57
Inventions
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RADIO EYE GUIDES PLANES TO SAFE LANDINGS
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SIX essential airplane instruments are rolled into one by the Flightray, a remarkable device that enables pilots to take off, fly, and land in perfect safety with zero visibility. Tests conducted for several years by Sperry Gyroscope Company engineers have prepared for its debut as a standardized fitting for military and civil planes.
PopularScience_19410101_0138_001_0051.xml
article
58
58
Facts and Ideas
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Double-Yolk Eggs Are Sold By the Dozen
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DOUBLE-YOLK eggs are an unusual by-product of the poultry farm of Floyd H. Moore, near Lancaster, Pa. About thirty dozen of the freaks are produced every week by the 2,000 pullets housed in Moore’s scientific fivestory “hotel for hens.”
PopularScience_19410101_0138_001_0052.xml
article
59
59
Military
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Minstrels from Mars? No, They're U. S. Army Airmen
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CROWDED around in a huddle, the seven weird faces that appear in the unusual photograph reproduced above are those of U. S. Army Air Corps pilots attached to a bombing squadron at March Field, Riverside, Calif., wearing oxygen masks of the type developed at the Mayo Clinic, Rochester, Minn. (P.S.M., Oct. ’39, p. 101).
PopularScience_19410101_0138_001_0053.xml
article
60
60,61
Facts and Ideas
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New Comet
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DR. DONALD H. MENZEL
A NEWLY discovered comet that may rival in brightness the famous Halley’s comet last seen in 1910, will be visible in the night sky during December and January. Spotted recently by Leland Cunningham, a graduate student at the Harvard Observatory, Comet Cunningham unfortunately comes very close to the sun and hence cannot be seen as it crosses the ecliptic or sun’s path just after the middle of January.
PopularScience_19410101_0138_001_0054.xml
article
62
62,63
Facts and Ideas
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Kings of Diamonds
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UNKNOWN to most of the people in the United States, New York City has become the diamond-cutting center of the world. Before the German Army invaded the Low Countries, 24,000 cutters were employed in the homes and shops of Antwerp and Amsterdam.
PopularScience_19410101_0138_001_0055.xml
article
64
64
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Truck Carries Floodlights To Photograph Wildlife
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To BLIND or bewilder nocturnal birds and animals in the desert around Tucson, Ariz., long enough to photograph or capture them, an American Museum of Natural History expedition equipped a truck with a floodlighting plant. Its battery of lights totaling 45,000 watts, operated on power generated by a 110-horsepower Diesel motor, provided enough light to allow color photographs to be made at night.
PopularScience_19410101_0138_001_0056.xml
article
64
64
Inventions
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Bottle Sprays Solution for Treating Burns
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BURNS can be treated easily and quickly by spraying the injured part with a solution contained in a handy bottle. All that is necessary is to point the nozzle at the burned area and press a lever attached to the cap. Volatile ingredients in the solution produce the pressure necessary to eject it from the bottle.
PopularScience_19410101_0138_001_0057.xml
article
65
65,66,67
Facts and Ideas
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Mickey Mouse Goes Classical
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MOVING sound has been added to moving pictures to bring greater realism to the screen. Accompanying Walt Disney’s newest Technicolor creation, “Fantasia,” in which Mickey Mouse and a host of new companions perform to the rhythms of classical music, this latest Hollywood invention made its first public appearance a few weeks ago at the Broadway Theater in New York.
PopularScience_19410101_0138_001_0058.xml
article
68
68,69,70,71
News
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Inventors Begin Search FOR A Secret Weapon
NATIONAL COUNCIL HUNTS NEW IDEAS FOR DEFENSE
TWO DOZEN DEFENSE NEEDS THAT INVENTORS MAY SUPPLY
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MYRON M. STEARNS
THE greatest American inventors alive today are organizing a country-wide search for a secret weapon. It may come from a tiny workshop in a country lean-to. It may come from the benches of a great research laboratory. It may be the brain child of an already-famous scientist, or the ugly duckling of an unknown inventor.
PopularScience_19410101_0138_001_0059.xml
article
72
72,73,74,75
News
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Turning Out the Planes
These Army and Navy fighters, bombers, dive bombers and patrol planes are the latest additions to the U. S. air forces
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Arthur Grahame
"WE HAVE big orders and we are getting the materials we need to fill them. We are expanding our plant, installing new machines, training new workers. All the other airplane manufacturers are doing the same thing. Mass production will become a reality just as soon as these new facilities can be put to work.
PopularScience_19410101_0138_001_0060.xml
article
73
73
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What Is the Outlook for Aviation in 1941?
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C. B. Allen
PRESENT indications point to 1941 as a boom year in American aviation. On both the military and civil aeronautical fronts, prospects could scarcely be brighter—thanks to factories glutted with British war orders and American national-defense contracts and to the Civil Aeronautics Administration’s pilot-training program in the universities and colleges.
PopularScience_19410101_0138_001_0061.xml
article
76
76,77,78,79,80
News
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Canada Rallies Her Cat Men
NORTH WOODS TRACTOR DRIVERS SUMMONED TO RUN WAR TANKS
BOUNCING "RYPA" TRAINS CANADIAN TANK GUNNERS
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HICKMAN POWELL
FIFTY degrees below zero, a blizzard blowing, and 200 miles to go. Over frozen muskeg bogs, down creek beds, and up through the bush over rugged moraines go the drivers of the tractor trains, all through the wild Canadian winter, freighting machinery and supplies to the new gold mines of the northern canoe country.
PopularScience_19410101_0138_001_0062.xml
article
81
81
Military
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Pigeons Are Bred with Camouflage for War Service
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CAMOUFLAGED pigeons, with a mottled plumage to make them almost invisible to an enemy’s waiting gunners, have been developed for emergency Army communication by Capt. Ray R. Delhauer, a retired United States Army pigeon expert, at Ontario, Calif.
PopularScience_19410101_0138_001_0063.xml
article
82
82,83,84,225,226
News
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PLASTICS IN THE WAR
Bones Broken by Exertion
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EDWIN TEALE
PLASTICS go to war! That’s the word from the armies of the world, which are making soldiers of all work of the synthetic resins that were only laboratory babies at the time of World War I. Today this substitute is being hurried into use in a thousand ways for two important reasons.
PopularScience_19410101_0138_001_0064.xml
article
85
85
Facts and Ideas
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Tests Reveal Compatibility for Marriage
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CHECKING up on the compatibility of persons about to be married is a predicted use for a system for measuring human relations developed by Dr. Ernest Chapple, of the Harvard University department of anthropology. Dr. Chapple places the couple to be “personality tested” behind a screen through which he can watch them without being seen.
PopularScience_19410101_0138_001_0065.xml
article
85
85
Inventions
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Machine Gives "Tailor-Made" Pressing Job
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SHAPING and pressing an evening gown, jacket, or house dress is just a single operation with a complex mechanism of rods, springs, and gears invented in his spare moments by W. R. Frentzel, a Seattle, Wash., insurance salesman. Frentzel calls his machine “Symetra” because it eliminates possible wrinkles caused by pressing a garment on a flat surface like an ironing board.
PopularScience_19410101_0138_001_0066.xml
article
86
86,87,88,89
News
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"SWEAT+BRAINS+TRAINING"
Back-to-skill schools fit men for defense jobs
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BERT ANDREWS
AMERICA is on its way back to the proud position it held so long—the reputation of being the greatest mechanical nation on earth! It’s getting there fast by adopting a formula that has never failed, and by hammering it home to the youth of the nation in its schools and its shops from coast to coast.
PopularScience_19410101_0138_001_0067.xml
article
90
90
Inventions
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Electric Ears Hear Secrets in the Earth
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BURIED treasure and underground pipe leaks are located easily by modern prospectors equipped with electrical detectors invented by Gerhard R. Fisher, of Palo Alto, Calif. The leak finder utilizes a sensitive crystal microphone and amplifying tubes to magnify sound 10,000 times.
PopularScience_19410101_0138_001_0068.xml
article
91
91
Facts and Ideas
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Records Now Bring History to Life for Students
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FAMOUS episodes in history and literature—stories that make people say, “Oh, how I wish I could have been there!”—have been re-created on phonograph records for American school children to hear and study. Teachers report that they make studies more exciting and real.
PopularScience_19410101_0138_001_0069.xml
article
92
92,93
Military
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ARMY'S HOPPER
CIVILIANS GO IN AT ONE END . . SOLDIERS COME OUT THE OTHER
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HOW does the Army handle the problem of receiving, sorting, classifying, and uniforming the thousands of men, called for service by the draft, who descend on army reception centers? The answer is found in the army hoppers, like the one pictured at the right, where civilians are transformed into uniformed privates, with all the precision and efficiency of a factory assembly line.
PopularScience_19410101_0138_001_0070.xml
article
94
94
Military
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Antiaircraft Gun Mounted on Truck
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MADE from a steel plate four feet square, plus materials picked up in a junk yard, a new machine-gun mount developed by soldiers of the 65th Coast Artillery antiaircraft regiment makes it possible to install a .50 caliber machine gun on any type of commercial truck.
PopularScience_19410101_0138_001_0071.xml
article
94
94
[no value]
[no value]
Microscope Stand Holds Sixty Mineral Specimens
[no value]
[no value]
[no value]
[no value]
SIXTY mineral specimens are accommodated at once on a turntable which forms part of a universal microscope stand devised for amateurs by Jay T. Fox of Seaford, N. Y. Any specimen can be brought under the lens by turning the table. For studying single specimens, the turntable is replaced by a ball-and-socket arrangement which allows the mineral to be tilted at any angle desired.
PopularScience_19410101_0138_001_0072.xml
article
95
95,96,97
Mountain Climber Engineer
[no value]
SCIENTIFIC FIRST ASCENTS
[no value]
[no value]
[no value]
[no value]
DR. WILLIAM R. HAINSWORTH, vice-president in charge of engineering and research of Servel, Inc., climbs hitherto unclimbed mountains for relaxation and devotes to his hobby the same concentration of effort which has made him one of the refrigeration industry’s leading engineers.
PopularScience_19410101_0138_001_0073.xml
article
98
98,99,100,101
News
[no value]
America Raises Her Voice
[no value]
[no value]
[no value]
ROBERT E. MARTIN
A VAST expansion in its international short-wave radio stations is giving the United States a new ace to play in the never-ending game in which world powers seek to bolster their prestige over the air. Two million dollars is being spent on new transmitters which will double and treble the power of many American stations.
PopularScience_19410101_0138_001_0074.xml
article
102
102
Facts and Ideas
[no value]
Dude Gold Mine
[no value]
[no value]
[no value]
[no value]
HUNDREDS of amateur miners in southern California every month experience the thrill of digging out "glory holes” and panning their own gold. Not one goes home empty-handed. John Seltzer guarantees that all will find at least a trace of the precious metal.
PopularScience_19410101_0138_001_0075.xml
article
103
103
Un-Natural History
[no value]
Un-Natural History
[no value]
[no value]
[no value]
Gus Mager
[no value]
PopularScience_19410101_0138_001_0076.xml
article
104
104,105,106,107
News
[no value]
MECHANIZED ZOO
[no value]
[no value]
[no value]
JOHN O'REILLY
SWEEPING changes are being put into effect at the New York Zoological Park. Through the use of new ideas, some borrowed from other parks and others the product of home-grown invention, visitors soon will be able to take an actual part in the zoo’s activities.
PopularScience_19410101_0138_001_0077.xml
article
108
108
Facts and Ideas
[no value]
Seats of Woven Plastic Tried Out on Subway
[no value]
[no value]
[no value]
[no value]
LESS damage to women’s hosiery, longer wear, and ease of cleaning are advantages claimed for a plastic seat covering recently installed experimentally in cars of the New York City subway system. Marketed as Saran, the plastic is produced as a continuous strand and then woven into material resembling natural rattan seat coverings.
PopularScience_19410101_0138_001_0078.xml
article
108
108
[no value]
[no value]
Home Power Saw Is Built from Kit
[no value]
[no value]
[no value]
[no value]
A POWER SAW suited for the home workshop, which can be built from a kit or purchased assembled, is now available. Two kits may be purchased, one containing only the metal parts, the other all parts ready to assemble. Plans alone also can be purchased.
PopularScience_19410101_0138_001_0079.xml
article
109
109
Facts and Ideas
[no value]
Movie Beasts Made to Order
[no value]
[no value]
[no value]
[no value]
WHEN you see the face of a big gorilla flash on the screen at your favorite movie house, the chances are it’s the work of John Michael Schleisser, noted Hollywood taxidermist. Working from measurements of living specimens, and sometimes from skeleton remains, Schleisser first models an animal in clay and from this turns out a papier-mâché figure which is then covered with a hide of the particular animal—or, if that is not available, with a hide of some similar beast.
PopularScience_19410101_0138_001_0080.xml
article
110
110,111,112,113,114,115
News
[no value]
Birth of a Bauble
[no value]
[no value]
[no value]
[no value]
IN ITS first year of operation, the world’s only mass-production factory for manufacturing glass Christmas-tree ornaments, the Wellsboro, Pa., plant of the Coming Glass Works, has turned out more than half of all the new decorations which will bedeck American trees this season.
PopularScience_19410101_0138_001_0081.xml
article
116
116,117
Here's My Story
[no value]
Here's My Story
[no value]
[no value]
[no value]
CHEVALIER JACKSON
[no value]
PopularScience_19410101_0138_001_0082.xml
article
118
118
Military
[no value]
Blood for British War Victims Stored by American Red Cross
[no value]
[no value]
[no value]
[no value]
BLOOD by the gallon taken from hundreds of volunteer donors in this country is now being processed under the direction of the American Red Cross for shipment to England and ultimate use in the treatment of war casualties. When a supply of blood is drained from the veins of a volunteer donor, it is bottled and stored in a refrigerator where it separates, the heavier corpuscles settling to the bottom and the plasma, or liquid, watery part of the blood, rising toward the top.
PopularScience_19410101_0138_001_0083.xml
article
119
119
Inventions
[no value]
Mannequins of Rubber Have Flexible Bodies
[no value]
[no value]
[no value]
[no value]
FLEXIBLE mannequins that have an exceptionally lifelike skin texture are the result of an invention by Jan Norriss, New York City sculptress. Miss Norriss pours a mixture of chemicals into liquid latex, and shapes the result in molds. It can be bent, twisted, and stretched, but will return instantly to its original shape.
PopularScience_19410101_0138_001_0084.xml
article
119
119
Inventions
[no value]
“Electric“ Paint Keeps Barnacles off Boat Hulls
[no value]
[no value]
[no value]
[no value]
BARNACLES are said to be repelled from the bottoms of ship hulls by a paint developed by Capt. J. Stanley Cameron, retired Yankee skipper now of Long Beach, Calif. According to the captain, his paint creates an electrical turbulence around the submerged portion of a vessel that discourages barnacles and other marine growths from attaching themselves to the hull.
PopularScience_19410101_0138_001_0085.xml
article
120
120,121
APPLIANCES FOR THE HOUSEHOLD
[no value]
APPLIANCES FOR THE HOUSEHOLD
[no value]
[no value]
[no value]
[no value]
HOUSEHOLD GLOVES coated with Neoprene, a synthetic rubber product, are handy for dishwashing, cleaning, gardening, and many other tasks about the home. Water-resistant, they are said to be more comfortable than ordinary rubber gloves DARNING EGG FOR GLOVES.
PopularScience_19410101_0138_001_0086.xml
article
122
122,123,124,125
News
[no value]
America Starts Work on World’s Biggest Navy
330 NEW FIGHTING SHIPS WILL ASSURE TWO-OCEAN SUPREMACY
[no value]
[no value]
ALDEN P. ARMAGNAC
WITHIN four years the war fleet of the United States will be the mightiest armada the world has ever seen. Three hundred and thirty new ships, added to the present 348, will give us our long-awaited two-ocean navy, a fighting force capable of defending both coasts simultaneously.
PopularScience_19410101_0138_001_0087.xml
article
126
126
[no value]
[no value]
Story of Science Told in Pictures
[no value]
[no value]
[no value]
[no value]
A KALEIDOSCOPIC outline of science, from archeology and atom smashers to weather and war, is presented in graphic form in “Science Picture Parade” by Watson Davis, director of Science Service and editor of “Science News Letter.” With 302 photographs from the files of the service, brief chapter introductions and clearly written captions, Davis outlines the progress and knowledge of the earth’s inhabitants since prehistoric days.
PopularScience_19410101_0138_001_0088.xml
article
126
126
Books Show How Houses Are Built, Sails Are Made
[no value]
Books Show How Houses Are Built, Sails Are Made
[no value]
[no value]
[no value]
[no value]
THIS IS THE WAY WE BUILD A HOUSE, by Creighton Peet, is addressed directly to young readers, but it should find an enthusiastic audience among older persons who are not too sure they know the difference between rafters and joists, and would be hard put to answer Junior’s embarrassing questions.
PopularScience_19410101_0138_001_0089.xml
article
127
127,128,129,130,131,132,133
AUTOS
[no value]
Superfinish BEARINGS FOR Better Cars
[no value]
[no value]
[no value]
S. Van Duyne
THANKS to a makeshift bit of machinery, which conquered a task engineers long thought could be done right only by hand, today’s buyers of automobiles and a long list of other machines are getting smoother and more economical performance from their purchases than ever before.
PopularScience_19410101_0138_001_0090.xml
article
134
134,135
[no value]
[no value]
THINGS TO DO AND MAKE FOR YOUR CAR
[no value]
[no value]
[no value]
S.J.H.
J.G.
W.B.
E.M.
1 A HEADLIGHT BEAM INDICATOR mounted on a front fender where you can see it from the driver’s seat, even while driving in brightly illuminated city streets, is a valuable aid to night-driving safety. Using an electric-lighted fender guide, simply connect it to the high-beam circuit of your headlights.
PopularScience_19410101_0138_001_0091.xml
article
136
136
Automobiles
[no value]
Switch Set in Floor Tunes Auto's Radio
[no value]
[no value]
[no value]
[no value]
TUNING your car radio is now accomplished without taking your hands from the steering wheel with a system just worked out by radio engineers. Available on several 1941 automobiles, of which one is the Nash shown at the left, the tuning control consists of a floor push-button switch operated by the toe of your shoe.
PopularScience_19410101_0138_001_0092.xml
article
136
136
Automobiles
[no value]
Air-Powered Device Puts Tire on Rim
[no value]
[no value]
[no value]
[no value]
AIR supplied by any service-station or garage air compressor now does the work of mallets, tire irons, and elbow grease in mounting tires on rims. Applied at the valve of a pneumatic machine, the compressed air enters cylinders to force pistons outward against flanges which guide the tire beads over the edges of wheel rims and drop them into place.
PopularScience_19410101_0138_001_0093.xml
article
136
136
Automobiles
[no value]
Thermostat Governs Temperature in Car
[no value]
[no value]
[no value]
[no value]
THERMOSTATIC control of the temperature inside cars is made possible, just as it is in homes, with the heater and controls shown installed in a Hudson. The equipment includes an adjustable knob mounted on the steering column which may be set at any desired point to suit the preference of the car’s occupants.
PopularScience_19410101_0138_001_0094.xml
article
137
137
Automobiles
[no value]
Road Tests Check Qualities of Motor Fuels
[no value]
[no value]
[no value]
[no value]
HOW rapidly does a car pick up speed with a given type of gasoline? What is the compression of this or that make of Diesel engine with a certain fuel? How high are the temperatures at various points throughout a motor in service? Using a variety of check-up devices, sales engineers of the Standard Oil Company of California invade deserts and mountains to test the performance of gasoline and Diesel-engined vehicles.
PopularScience_19410101_0138_001_0095.xml
article
138
138,139
Automobiles
[no value]
12 Rules for Tire Health
STRETCH OUT YOUR TIRE LIFE
[no value]
[no value]
[no value]
DO YOU race your car up to traffic lights and then slam on your brakes? Do you take corners at high speeds? Gun your motor in second or low? Or bump into or over curbs? If you do, your annual tire bill is from twenty-five to fifty percent higher than it should be, according to studies made by tire engineers of the B. F. Goodrich Company, of Akron, Ohio.
PopularScience_19410101_0138_001_0096.xml
article
140
140,141,142,224
Automobiles
[no value]
GUS Tackles a Tough One
For withholding facts about his car, a new customer at the Model Garage — expecting miracles—will get a severe shock instead when he sees his labor bill
GUS SAYS:
[no value]
[no value]
MARTIN BUNN
THE big, well-turned-out man who had driven a speckless sedan into the shop of the Model Garage got out of it and came over to the workbench with a wide smile on his large face. “You’re Gus Wilson,” he stated positively to the Model Garage proprietor.
PopularScience_19410101_0138_001_0097.xml
article
143
143
[no value]
[no value]
HOME and WORKSHOP
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0098.xml
article
144
144,145,146,147,148,149
Home and Workshop
[no value]
HOME PLUMBING REPAIRS
[no value]
[no value]
[no value]
JOHN MODROCH
A LITTLE knowledge wisely applied in the care and repair of the plumbing system will save the home owner many dollars. To prevent damage in the event of a serious water leak, it is advisable that the entire household be familiar with the location of every shut-off valve.
PopularScience_19410101_0138_001_0099.xml
article
149
149
Shop Data File
[no value]
PROTECTIVE HAND CREAM
[no value]
[no value]
[no value]
[no value]
A mixture of lanolin and castor oil is frequently used on the hands and arms of machinists susceptible to skin trouble caused by constant contact with lubricating oil. This type of “extra skin,” however, is not so suitable for those doing general work about the shop, garage, or home.
PopularScience_19410101_0138_001_0100.xml
article
150
150,151
The Handy Man
[no value]
KEEPING THE HOME SHIPSHAPE
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0101.xml
article
152
152,153,154
Home and Workshop
[no value]
Your House NEEDS A Check-Up
[no value]
[no value]
[no value]
ROGER B. WHITMAN
I KNOW a home owner whose chief hobby is his house. He is so familiar with every little detail, inside and out, that he notices any change in it. This may be a new crack appearing between two floor boards ... a drop of water forcing its way through window-pane putty ... an unexpected noise in the plumbing or the oil burner ... the loosening of a roof shingle . . . the burning of more oil than the temperature warrants ... a creak in the stair.
PopularScience_19410101_0138_001_0102.xml
article
155
155,156,157
Home and Workshop
[no value]
JOGGLING BOARD
[no value]
[no value]
[no value]
[no value]
THE joggling board, an old South Carolina institution which is more fun than a couple of barrels of monkeys on a seesaw, is beginning to find its way to homes in other parts of the country. Visitors to Charleston and the plantations of the South Carolina low country see southern children and their elders joggling away in great glee and are immediately won over to this curious means of play and exercise.
PopularScience_19410101_0138_001_0103.xml
article
158
158,159
Woodworking
[no value]
A Dressing Table and Bench
LIST OF MATERIALS
[no value]
[no value]
DONALD A. PRICE
ONLY in stores could you find the equal of this distinctive modern dressing table and bench. Its appeal is based upon a well-proportioned and simple exterior and the careful selection of wood for grain and color.
PopularScience_19410101_0138_001_0104.xml
article
160
160,161,162,163
Woodworking
[no value]
WORKBENCHES for the HOME SHOP
[no value]
[no value]
[no value]
EDWIN M. LOVE
NO MATTER what kind of home workshop you have, there is really nothing more important in it than the workbench. You may have all sorts of machine tools, yet you still have to spend much of your time fitting and assembling at the bench. This month we present a new workbench designed especially for the POPULAR SCIENCE model home workshop.
PopularScience_19410101_0138_001_0105.xml
article
164
164
New Shop Ideas
[no value]
LATHE WORK
[no value]
[no value]
[no value]
[no value]
THE primary tool of industry is the metal-turning lathe. This accounts for the emphasis always placed upon lathe work in trade and vocational schools. It is because the lathe is such a versatile and universally used tool that it is being added to the equipment of many thousands of home workshops each year.
PopularScience_19410101_0138_001_0106.xml
article
164
164
Shop Data File
[no value]
NOMENCLATURE OF CUTTING TOOLS
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0107.xml
article
165
165
Shop Data File
[no value]
TOOL FORMS AND METHOD OF GRINDING
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0108.xml
article
165
165
Shop Data File
[no value]
GRINDING TOOLS FOR VARIOUS METALS
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0109.xml
article
165
165
Shop Data File
[no value]
HIGH-SPEED STEEL TOOLS
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0110.xml
article
166
166
New Shop Ideas
[no value]
Cutting Threads on Both Ends of Short Pipe Nipples
[no value]
[no value]
[no value]
[no value]
WHEN threads have to be cut on short pipe nipples, the problem of how to hold the work in the vise presents itself. The depth of the pipe diestock and the clamping distance of the vise must be taken into consideration if threads are to be cut on both ends.
PopularScience_19410101_0138_001_0111.xml
article
166
166
[no value]
[no value]
Scraper Quickly Removes Grease from Garage Floor
[no value]
[no value]
[no value]
[no value]
HAVE you ever watched a garage mechanic scrape grease from the floor and, after a thin layer had been loosened, patiently try to remove it by sweeping it up with a broom? When this is done, most of the grease merely cakes and stays where it is. With the tool illustrated, however, it can be scraped and collected at the same time, thus solving the otherwise exasperating problem of getting rid of the grease after it has been scraped free.
PopularScience_19410101_0138_001_0112.xml
article
167
167,168
New Shop Ideas
[no value]
Cross-Slide Angle Plate AIDS IN BORING AWKWARD WORK
[no value]
[no value]
[no value]
[no value]
FOR boring small work in the lathe that cannot be held in the chuck, an angle plate of the type illustrated in Fig. 1 will be found a great convenience. It is mounted on the cross slide. If the angle-plate dimensions given in the drawings are suitable for your lathe and the kind of work you are ordinarily doing, you can build a wooden pattern by adding 3/32" for machining allowance.
PopularScience_19410101_0138_001_0113.xml
article
168
168
New Shop Ideas
[no value]
A Simple Adjustable Mount for a Shop Motor
[no value]
[no value]
[no value]
[no value]
ONE of the easiest of the many possible ways of mounting an electric motor to run home-workshop machines is that shown in the illustrations below. At a touch of the finger, the slide may be adjusted with the wedge to suit different-sized pulleys.
PopularScience_19410101_0138_001_0114.xml
article
169
169
New Shop Ideas
[no value]
Discarded Hot-Water Tank Serves for Steaming Wood
[no value]
[no value]
[no value]
[no value]
FOR steaming wood preparatory to bending it, the arrangement illustrated has proved satisfactory in boat repair work during many years past. All that is needed is a discarded hot-water tank, some pipe fittings, lumber, a garden hose, and a source of heat—in this case an old gas range.
PopularScience_19410101_0138_001_0115.xml
article
169
169
New Shop Ideas
[no value]
Powerful Screw Extractors
[no value]
[no value]
[no value]
[no value]
A SET of screw extractors that are more durable than the ordinary spiral type can be made from the five smallest sizes of safety set-screw wrenches. First, grind off the curved end; then carefully taper one end to about two thirds its full size, being careful to preserve the hexagonal shape.
PopularScience_19410101_0138_001_0116.xml
article
169
169
New Shop Ideas
[no value]
Small Irregular-Shaped Parts Polished with Manicure Pads
[no value]
[no value]
[no value]
[no value]
POLISHING pads or tips of the type shown, made for use with a manicure machine, are excellent for polishing small, irregular-shaped articles. The tips consist of flat, flared, or rounded felt disks cemented to a metal arbor that can be fastened in a drill press, hand carver, or flexible shaft.
PopularScience_19410101_0138_001_0117.xml
article
170
170,171,172
New Shop Ideas
[no value]
Electric-Arc Soldering
[no value]
[no value]
[no value]
HAROLD P. STRAND
VERY little work is needed to finish our electric-arc soldering and lead-burning outfit. Place the primary-secondary coil on the open end of the core and replace the laminations as in Fig. 8. Note that the heavy secondary ends are at the top (right side in photo) and the primary taps are at the sides of the core.
PopularScience_19410101_0138_001_0118.xml
article
173
173
[no value]
[no value]
Big Rubber Band Keeps Plug from Pulling Out of Socket
[no value]
[no value]
[no value]
[no value]
WHEN an electric appliance or tool is plugged into an extension cord, the plug has an annoying tendency to pull from the socket on the slightest excuse. Sometimes the parts are wired together, but this is not entirely safe. A better method is to use a heavy rubber band attached as shown at the left so that the plug will hold securely, yet may be quickly removed without difficulty.
PopularScience_19410101_0138_001_0119.xml
article
173
173
Electrical
[no value]
Handle Side of Pliers Used for Stripping Insulation
[no value]
[no value]
[no value]
[no value]
INSULATION is easily removed from the end of a wire with ordinary side-cutting pliers used as shown at the right. Insert the wire between the handles just back of the pivot pin. A slight pressure on the handles will then mash the insulation so that it either comes off in the process or may be pulled off with little or no effort.
PopularScience_19410101_0138_001_0120.xml
article
173
173
Electrical
[no value]
Flexible Lamp Cords Joined by Using a Fisherman's Knot
[no value]
[no value]
[no value]
[no value]
A SECURE way to connect two pieces of flexible lamp cord end to end is to remove the insulation for a somewhat greater distance than usual and tie the wires together with a fisherman’s knot, as shown, rather than use an ordinary twisted splice.
PopularScience_19410101_0138_001_0121.xml
article
173
173
Shop Data File
[no value]
CAPACITY OF COPPER BUS BAR
[no value]
[no value]
[no value]
[no value]
When building or connecting up apparatus in which flat strips of copper bus bar are used to carry current, one should know the carrying capacity of this material, because it cannot be found from a table of carrying capacities of round copper wires.
PopularScience_19410101_0138_001_0122.xml
article
174
174
Electrical
[no value]
Reel for Xmas-Tree Lights
[no value]
[no value]
[no value]
F. H.
ONE chore that often mars the Christmas spirit is unraveling the old strings of lights before decorating the tree. This can be avoided by making a reel from plywood as shown. It provides slots for winding three sets of lamps.
PopularScience_19410101_0138_001_0123.xml
article
174
174
Electrical
[no value]
Testing a Small Cartridge Fuse
[no value]
[no value]
[no value]
MORRIS KATZ
FOR testing nonindicating cartridge fuses, one maintenance man uses a flash light with the end cap removed and the switch in the “on” position. The flash light and a good fuse or short piece of metal are held as shown. The fuse to be checked is then pressed against the flash-light battery and the good fuse so that the electrical circuit is completed.
PopularScience_19410101_0138_001_0124.xml
article
174
174
Electrical
[no value]
Using Flash-Light Cells Longer
[no value]
[no value]
[no value]
R. A. C.
WHEN a two-cell flash light of the prefocused type is used a great deal, the batteries and bulb can be made to give longer service by substituting a bulb intended for use in a three-cell light of the same type. The lamp will still give ample light.
PopularScience_19410101_0138_001_0125.xml
article
174
174
Electrical
[no value]
Invalid Can Ring for Help with Portable Call Signal
[no value]
[no value]
[no value]
WILLIAM E. HAYES
To ENABLE an invalid to attract the attention of others in the home, a portable electric signal is easily made as shown in the accompanying diagram. A push button may be substituted for the feed-through switch, a buzzer for the bell, and dry cells for the transformer, if preferred.
PopularScience_19410101_0138_001_0126.xml
article
174
174
Electrical
[no value]
Holder Made of Wire Mesh Keeps Soldering Iron Handy
[no value]
[no value]
[no value]
RAY BLAIN
ELECTRICIANS and others who use an electric soldering iron constantly will find this holder useful. It is easily constructed from square-mesh wire screen woven together with pliers at the corners and held in position with clamps. The holder for a spool of rosin-core solder is an additional convenience.
PopularScience_19410101_0138_001_0127.xml
article
175
175
Working Time: ONE EVENING
[no value]
Soap Dispensers FOR KITCHEN AND LAUNDRY
[no value]
[no value]
[no value]
[no value]
BECAUSE of the design of its spout, the bead-soap dispenser shown in Fig. 1 below limits the amount of soap one can pour to a heaping tablespoonful. This automatic feature is especially desirable for washing dishes, and it eliminates waste.
PopularScience_19410101_0138_001_0128.xml
article
176
176,177
Craftwork
[no value]
Spiral Inlaying
[no value]
[no value]
[no value]
B. N.
MODERN decorative effects in wood turning can be obtained by using machine set-ups of the type illustrated. Thin bands can be inlaid spirally around turned columns, standards, or legs; and flat faceplate turnings, such as lamp bases, can be ornamented with vertical fluting on the edges.
PopularScience_19410101_0138_001_0129.xml
article
178
178,179
Craftwork
[no value]
Toy Farm
[no value]
[no value]
[no value]
HI SIBLEY
IN THIS toy farm the center of interest is the big barn, which is made to lift off the base so that a child can arrange the tools and tractor to his taste, and put horses or cows in the stalls. One gable has a hay window with beam and pulley. The fence, which folds up when not in use, can be made in as many sections as required.
PopularScience_19410101_0138_001_0130.xml
article
179
179
Craftwork
[no value]
Windstorm Weather Vane
[no value]
[no value]
[no value]
[no value]
ALTHOUGH designed originally for use as a weather vane, this silhouette can be adapted to other purposes. It would, for example, make an appropriate advertising panel for electric fans, umbrellas, raincoats, and the like. For outdoor use the silhouette can be cut from either waterproof plywood or sheet metal and mounted as required.
PopularScience_19410101_0138_001_0131.xml
article
180
180
Craftwork
[no value]
Marine Coaster Set Turned on a Lathe
[no value]
[no value]
[no value]
BRUCE MACINTOSH
THIS coaster set is a through-and-through lathe project for the yachtsman who is casting about for something nautical to turn his hand to. Start with the spoke handles, three of which are turned from one piece of stock, then cut off, and the small stubs sanded smoothly.
PopularScience_19410101_0138_001_0132.xml
article
180
180
Craftwork
[no value]
Toy Wheels from Rolling Pins
[no value]
[no value]
[no value]
ARTHUR ROBB
IN MAKING toys the matter of wheels is somewhat of a problem to one who does not have a lathe. I merely purchase ten-cent rolling pins for small wheels, and fifteen-or twenty-cent rolling pins for larger wheels, and saw them across on my bench saw.
PopularScience_19410101_0138_001_0133.xml
article
180
180
Craftwork
[no value]
Leather Work Tooled with Empty Pencil
[no value]
[no value]
[no value]
[no value]
LEATHER craftwork is often embellished by stamping background areas with special punches. When suitable punches are not available, an ordinary ten-cent mechanical pencil may be pressed into service. Remove the lead.
PopularScience_19410101_0138_001_0134.xml
article
181
181
Craftwork
[no value]
Gay Plastics Ornament Chinese Checkerboard
[no value]
[no value]
[no value]
[no value]
CAST-RESIN plastics, which lend an air of distinction to so many kinds of craftwork, can be used to enliven a Chinese checkerboard. The 15" diameter base is cut from five-ply plywood from ⅜" to ¾" thick, and the hexagonal center and the triangular points are 3/16" plastic.
PopularScience_19410101_0138_001_0135.xml
article
181
181
Shop Data File
[no value]
RESISTS
[no value]
[no value]
[no value]
[no value]
There are numerous resists or mediums for blocking out and coating metals before they are etched with acids. Of the waxes, paraffin is widely used, being cheap and always available. The melted paraffin is poured over the metal, which, to obtain best results, should be warm.
PopularScience_19410101_0138_001_0136.xml
article
182
182,183
Outdoors
[no value]
Putting Your SKIS in Shape
[no value]
[no value]
[no value]
ART HOLMES
ARE your skis ready for the first snows? A little pre-season maintenance now will prolong their useful life and improve their performance. Start with the bindings. Take them off entirely and check their condition. Steelwool any rusty places, and oil or shellac them.
PopularScience_19410101_0138_001_0137.xml
article
183
183
Outdoors
[no value]
Outdoor Wiring Accessories
[no value]
[no value]
[no value]
J. M.
BECAUSE the common hard-rubber or composition variety of electric sockets and plugs tend to break up when exposed to frost, those used on lamp and extension cords intended for continuous outdoor service should be of the heavy-duty, soft-rubber type.
PopularScience_19410101_0138_001_0138.xml
article
184
184
Outdoors
[no value]
A Revolving Bird Feeder Built with Glass Sides
[no value]
[no value]
[no value]
DICK HIXON
THIS sunny, snug bird feeder swings with the wind and protects its feathered patrons at their meals. Waterproof outdoor plywood is used for the roof, and white pine for the posts, floor, and sturdy ridge piece into which the galvanized pipe is inserted at the top.
PopularScience_19410101_0138_001_0139.xml
article
184
184
Outdoors
[no value]
Three-Runner Snow Scooter Steered with the Feet
[no value]
[no value]
[no value]
H. S
ANY boy can create a real sensation on his local coasting hill by appearing with a T-square scooter of the type illustrated. It requires only the simplest carpentry to construct. There are two rigidly fixed runners in front, and a single pivoted runner in the rear for steering.
PopularScience_19410101_0138_001_0140.xml
article
185
185
Outdoors
[no value]
Metal Decoys Aid in Spearing Fish Through Ice
[no value]
[no value]
[no value]
D. E. LINDBERG
DECOYS to use in the sport of spearing fish through the ice from a fish house—a sport that is popular in many of the colder sections of the country—can be made as shown from sheet metal or heavy tin. The decoys may be from 3" to 8" long and patterned after any desired kind of fish.
PopularScience_19410101_0138_001_0141.xml
article
185
185
Outdoors
[no value]
Skates Given Keen Edge with Half-Round File
[no value]
[no value]
[no value]
JOHN LAPIN
A SKATE sharpener can be made by clamping a half-round file between two wooden blocks in a bench vise and drawing the runners of the skates across the rounded surface of the file. Select two sound pieces about 1" by 1" by 5" and saw a V-shaped groove the length of each block; then shape the groove with the edge of the half-round file so the file can be held securely as shown in the detail drawing.
PopularScience_19410101_0138_001_0142.xml
article
185
185
Outdoors
[no value]
Screen and Storm Doors Hinged to Avoid Unnecessary Holes
[no value]
[no value]
[no value]
WILLIAM F. PETERSON
PUTTING up and taking down interchangeable storm and screen doors soon enlarges the hinge screw holes, making it necessary either to plug them or change the position of the hinges. To avoid this, I screw the hinges permanently to the door frame and fasten them on the screen or storm door with flathead bolts and nuts.
PopularScience_19410101_0138_001_0143.xml
article
186
186,187
MODELS
[no value]
Balsa Wood Wood for Model Airplanes
PART II
[no value]
[no value]
FRANK ZAIC
WE ARE led to believe that extra-light balsa is best for model work to achieve maximum strength with minimum weight. This would be true if a model behaved perfectly from the first to the last flight, and did not meet unexpected obstructions.
PopularScience_19410101_0138_001_0144.xml
article
188
188,189
HOME SCIENCE
[no value]
SCIENCE STUNTS
[no value]
[no value]
[no value]
[no value]
WITH homemade models, or the simplest of chemical glassware, you can learn as much about heating plants in a few minutes as might take several seasons of costly experience. Principles illustrated in these five easy experiments explain the “why” of important points in regulating and caring for a furnace or boiler.
PopularScience_19410101_0138_001_0145.xml
article
190
190,191
Radio
[no value]
RADIO IDEAS
[no value]
[no value]
[no value]
[no value]
TABLE-LAMP RADIO. Built into the bakelite base of this attractive table lamp is a five-tube radio receiver with a dynamic speaker. A knob controls the on-off switch, and tuning is accomplished by turning the revolving dial in the base with the tips of the fingers
PopularScience_19410101_0138_001_0146.xml
article
192
192,193,227
Radio
[no value]
SUMMER-WINTER RADIO
LIST OF PARTS
[no value]
[no value]
ARTHUR C. MILLER
CARRIED outdoors, the compact four-tube superheterodyne receiver shown at the top of the page is a sporty, summertime portable radio, finished in striped airplane-luggage canvas, and powered by batteries. But it takes a second look at the highly polished walnut tablemodel radio in the lower picture to be convinced that it is the same set, stripped of its sport clothes and formally dressed for wintertime use in your living room.
PopularScience_19410101_0138_001_0147.xml
article
194
194
[no value]
[no value]
PHOTO GRAPHY
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0148.xml
article
195
195,196
Photography
[no value]
"Pictures While I Walk"
Popular Science Interviews Photographer Harold Harvey
[no value]
[no value]
[no value]
HAROLD HARVEY has built himself a highly satisfactory life on three careers and a hobby. He began as an artist and illustrator, became one of the country’s best-known commercial photographers, and turned from that to an even more brilliant success in photographic research; his bestknown accomplishment thus far being the Panthermic 777 film developer, presented commercially three years ago.
PopularScience_19410101_0138_001_0149.xml
article
197
197
Photography
[no value]
Try Type for Movie Titles
[no value]
[no value]
[no value]
JOHN H. WOOD
GOOD taste is the essence of titling amateur movies successfully. Titles must be planned and executed carefully if the final film is to present a workmanlike appearance approaching the professional. A small printing press, the cost of which is comparatively little, provides one of the best methods of making titles.
PopularScience_19410101_0138_001_0150.xml
article
198
198,199,200
Photography
[no value]
Chaplin of Still Pictures
[no value]
[no value]
[no value]
JOHN H. WALKER
NO PROBLEM in photography is tougher than that of turning out funny pictures consistently. Lejaren a Hiller, one of the greatest commercial photographic illustrators, has made something of a specialty of humor, achieving brilliant results in a field that most commercial men avoid or neglect.
PopularScience_19410101_0138_001_0151.xml
article
201
201
Photography
[no value]
Taking the Popular Science Cover
[no value]
[no value]
[no value]
[no value]
MIDDAY sunlight and three shrewdly placed blue flash lamps gave William W. Morris, POPULAR SCIENCE staff photographer, just the illumination he needed for the fullcolor picture of the Curtiss dive bomber SBC-4 reproduced on this month’s cover.
PopularScience_19410101_0138_001_0152.xml
article
202
202,203
Photography
[no value]
DEVICES FOR CAMERA USERS
[no value]
[no value]
[no value]
[no value]
EXPOSURE-METER BRACKET. Using an exposure meter and a camera at the same time is made easy by a metal bracket which is attached to the tripod socket of the camera and holds the exposure meter securely in position FRAMES KEEP PICTURES CLEAN.
PopularScience_19410101_0138_001_0153.xml
article
204
204
Photography
[no value]
Five Lenses in One
[no value]
[no value]
[no value]
ARTHUR TRAUFFER
IF YOU can pick up a secondhand anastigmat lens of the symmetrical, four-element, air-spaced type* or salvage one from some old camera, you can have a lot of fun experimenting with it. Mounted in a camera with ground glass and double or triple extension bellows, it will serve as a makeshift convertible lens of five different focal lengths.
PopularScience_19410101_0138_001_0154.xml
article
205
205
Photography
[no value]
Photographic Paper Box
[no value]
[no value]
[no value]
FRANK MCCARTY
PHOTOGRAPHERS enlarging by keeping can the save projection time in paper in a light-tight, self-closing box or desk like the one illustrated. This makes it unnecessary to open several envelopes each time a sheet is needed. The box has two compartments each for 8" by 10" and 11" by 14" paper, as well as places for test strips.
PopularScience_19410101_0138_001_0155.xml
article
206
206
Photography
[no value]
How to Get a Dog to Pose Alertly
[no value]
[no value]
[no value]
J. M.
FOR taking more alert and animated pictures of your pet dog, this electric “birdie” is a great help. It consists of a doorbell screwed on a board that can be mounted on a folding lamp stand. A tin-foil lure is hung on the gong hammer by means of a loose wire loop.
PopularScience_19410101_0138_001_0156.xml
article
206
206
Photography
[no value]
Simple Accounting System Keeps Track of Cut Film
[no value]
[no value]
[no value]
[no value]
You will not run out of cut negatives unknowingly if you use the simple accounting system illustrated above. Each time you take one or more films from the box, subtract the number from the old balance and then mark the remainder on the margin of the box cover.
PopularScience_19410101_0138_001_0157.xml
article
206
206
Photography
[no value]
Wet Reel from a Roll-Film Tank Dries Quickly over an Electric Lamp
[no value]
[no value]
[no value]
RUSSELL J. HUNT
A SIMPLY made tank-reel drier will greatly increase the usefulness of your roll-film tank. You often want to start developing a second film while waiting for the first one to dry, yet cannot do so because it is impossible to thread the film if the reel is the least bit moist.
PopularScience_19410101_0138_001_0158.xml
advertisement
207
207
[no value]
[no value]
DELTA MANUFACTURING COMPANY
[no value]
DELTA MANUFACTURING COMPANY
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0159.xml
article
208
208
Photography
[no value]
Sponge Rubber Pad on Printer Furnishes Perfect Contact
[no value]
[no value]
[no value]
R. D. MURPHY
DO YOU have trouble in pressing your photo prints in perfect contact against the negative in your printer? If so, remove the old padding from the printer head and replace it with a sheet of sponge rubber ¼" thick. Use casein glue because the heat from the printer lights might soften other adhesives, such as rubber cement.
PopularScience_19410101_0138_001_0160.xml
article
208
208
Photography
[no value]
Removable Labels for Bottles
[no value]
[no value]
[no value]
[no value]
PHOTO chemical bottles are more easily labeled if the name or number of the formula is lettered on a square of white double-weight paper and fastened to the bottle or jug with a rubber band cut from an old inner tube. Such a label is easily read, and it can be removed when the bottle is to be washed.
PopularScience_19410101_0138_001_0161.xml
advertisement
208
208,209
[no value]
[no value]
Kodak Company
[no value]
Kodak Company
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0162.xml
advertisement
210
210
[no value]
[no value]
North Bros. Mfg. Co.
[no value]
North Bros. Mfg. Co.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0163.xml
article
210
210
Photography
[no value]
Easily Assembled Magnifier Aids Ground-Glass Focusing
[no value]
[no value]
[no value]
ROBERT SCOTT
ASSEMBLED in a few minutes, this magnifier aids in accurate ground-glass focusing. The upper and lower hoods are cut from an old inner tube, and the magnifying glass is from a cheap pocket magnifier. Draw a paper pattern for the two hoods, which are identical, and cut the rubber to match.
PopularScience_19410101_0138_001_0164.xml
article
210
210
Photography
[no value]
Spilled Hypo Causes Injurious Dust
[no value]
[no value]
[no value]
[no value]
WHEN developing in the darkroom, always be careful not to splash any hypo solution on the floor. Hypo dust may result when the water evaporates, and cause spots on sensitized materials.
PopularScience_19410101_0138_001_0165.xml
article
211
211
Photography
[no value]
Short-Focus Lens from Camera Adapted for Use in Enlarger
[no value]
[no value]
[no value]
[no value]
I WISHED to use the 3" lens from my miniature camera as a projection lens in my 5" by 7" enlarger, but discovered that the bellows would not rack close enough to the negative carrier. An adapter made from discarded film-pack backs solved the problem.
PopularScience_19410101_0138_001_0166.xml
article
211
211
Photography
[no value]
Pinholes in Small Negatives Removed by Double Spotting
[no value]
[no value]
[no value]
[no value]
PINHOLES in small negatives, caused by dust particles, are rather difficult to opaque and often necessitate considerable spotting on the enlargements. After placing the paper in the enlarging easel, drop the red filter safe light in position and turn on the current so that the pinhole spots are visible.
PopularScience_19410101_0138_001_0167.xml
advertisement
211
211
[no value]
[no value]
NICHOLSON FILES
[no value]
NICHOLSON FILES
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0168.xml
advertisement
212
212
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0169.xml
advertisement
212
212
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0170.xml
advertisement
212
212,213
[no value]
[no value]
POPULAR SCIENCE MONTHLY
[no value]
POPULAR SCIENCE MONTHLY
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0171.xml
advertisement
213
213
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0172.xml
advertisement
213
213
[no value]
[no value]
CASEIN COMPANY OF AMERICA
[no value]
CASEIN COMPANY OF AMERICA
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0173.xml
advertisement
214
214
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0174.xml
advertisement
214
214
[no value]
[no value]
SKILSAW, INC.
[no value]
SKILSAW, INC.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0175.xml
advertisement
214
214,216,218
[no value]
[no value]
Advertisement: Popular Science Monthly
[no value]
[no value]
Popular Science Monthly
[no value]
[no value]
PopularScience_19410101_0138_001_0176.xml
advertisement
215
215
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0177.xml
advertisement
216
216
[no value]
[no value]
CHICAGO WHEEL & MFG. CO.
[no value]
CHICAGO WHEEL & MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0178.xml
advertisement
216
216
[no value]
[no value]
BENJAMIN AIR RIFLE CO.
[no value]
BENJAMIN AIR RIFLE CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0179.xml
advertisement
216
216
[no value]
[no value]
KUMFY PRODUCTS CO.
[no value]
KUMFY PRODUCTS CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0180.xml
advertisement
217
217
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0181.xml
advertisement
218
218
[no value]
[no value]
DURO METAL PRODUCTS CO.
[no value]
DURO METAL PRODUCTS CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0182.xml
advertisement
218
218
[no value]
[no value]
WITTE ENGINE WORKS
[no value]
WITTE ENGINE WORKS
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0183.xml
advertisement
218
218
[no value]
[no value]
ELECTRICAL SALVAGE CO.
[no value]
ELECTRICAL SALVAGE CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0184.xml
advertisement
218
218
[no value]
[no value]
ROGERS GLUE
[no value]
ROGERS GLUE
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0185.xml
advertisement
219
219
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0186.xml
advertisement
220
220
[no value]
[no value]
Advertisements
[no value]
UNIVERSAL CAMERA CORPORATION
CORSAIR
UNIVERSAL CAMERA CORPORATION
UNIFLASH
[no value]
[no value]
PopularScience_19410101_0138_001_0187.xml
article
220
220,221
Photography
[no value]
Mercury Switch Controls Alarm on Darkroom Timer
[no value]
[no value]
[no value]
[no value]
THIS darkroom timer consists of an inexpensive alarm clock and an improvised mercury switch. Cut off ¼" from the jaws of a spring-type clothespin and round the inside of the jaws to fit the knurled knob by which the hands of the clock are turned.
PopularScience_19410101_0138_001_0188.xml
article
221
221
Photography
[no value]
Heavy Corner Angle Converted into Serviceable Tilting Top
[no value]
[no value]
[no value]
GEORGE HORST
AN ORDINARY heavy corner angle forms a serviceable tilting top for a camera tripod. The tripod screw passes through one of the holes in the angle, and a nut fastens the angle. Cut the head from a machine screw of a size to fit the tripod socket of your camera, and insert it.
PopularScience_19410101_0138_001_0189.xml
advertisement
221
221
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0190.xml
advertisement
221
221
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0191.xml
advertisement
221
221
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0192.xml
advertisement
221
221
[no value]
[no value]
BURKE & JAMES, Inc.
[no value]
BURKE & JAMES, Inc.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0193.xml
advertisement
222
222
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0194.xml
article
222
222
Photography
[no value]
Printed Matter Split in Two to Preserve Both Sides
[no value]
[no value]
[no value]
J. C. BRANSTETTER
PHOTOGRAPHERS sometimes wish to make a contact print of a picture or printed matter, but cannot do so because there is printing on the other side of the sheet. One solution is to split the paper in two. This is not at all difficult. Paste a piece of cloth or very strong paper to each side of the sheet to be split.
PopularScience_19410101_0138_001_0195.xml
article
222
222
Photography
[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 dip the prints in a stop bath before transferring them to the fixing bath.
PopularScience_19410101_0138_001_0196.xml
article
222
222
Photography
[no value]
Lacquer Protects Movie Film
[no value]
[no value]
[no value]
[no value]
APPLIED to one or both sides of 35or 16-mm. movie film, a new lacquer effectively protects them from scratches. The coating, rather than the film itself, receives the surface wear. When this has gone far enough to affect projection, the lacquer, according to the manufacturer, can be removed and a new coating applied, making the film as good as new.
PopularScience_19410101_0138_001_0197.xml
article
223
223
Photography
[no value]
Plywood Hook Holds Diffuser in Front of Photoflood Lamp
[no value]
[no value]
[no value]
JOSEPH WILLIAMS
A DIFFUSING cloth can be hung in front of a photoflood lamp by means of a single hooklike bracket jig-sawed as shown from ¼" plywood. It hooks on the reflector rim and holds the cloth far enough out so that it will not be SCORCHED.
PopularScience_19410101_0138_001_0198.xml
article
223
223
Photography
[no value]
Flattening Work for Copying
[no value]
[no value]
[no value]
J. H. DUNNEWIN
To HOLD an original picture or document flat when copying with the camera, cut a piece of corrugated board a little larger than the copy and use a spring paper clip on each corner as shown.
PopularScience_19410101_0138_001_0199.xml
advertisement
223
223
[no value]
[no value]
Advertisements
[no value]
ATLAS PRESS CO.
Milling Machine
ATLAS PRESS CO.
Drill Presses
[no value]
[no value]
PopularScience_19410101_0138_001_0200.xml
advertisement
224
224
[no value]
[no value]
American Technical Society
[no value]
American Technical Society
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0201.xml
advertisement
224
224
[no value]
[no value]
DREMEL MFG. CO.
[no value]
DREMEL MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0202.xml
advertisement
224
224
[no value]
[no value]
BENJAMIN AIR RIFLE CO.
[no value]
BENJAMIN AIR RIFLE CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0203.xml
advertisement
224
224
[no value]
[no value]
ALBERT CONSTANTINE & SON, INC.
[no value]
ALBERT CONSTANTINE & SON, INC.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0204.xml
advertisement
225
225
[no value]
[no value]
Brooks Appliance Co.
[no value]
Brooks Appliance Co.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0205.xml
advertisement
226
226
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0206.xml
advertisement
227
227
[no value]
[no value]
UNITED STATES PLYWOOD CORP.
[no value]
UNITED STATES PLYWOOD CORP.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0207.xml
advertisement
227
227
[no value]
[no value]
CHAMPION SPARK PLUG CO.
[no value]
CHAMPION SPARK PLUG CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0208.xml
advertisement
227
227
[no value]
[no value]
Huron Machine & Tool Co.
[no value]
Huron Machine & Tool Co.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0209.xml
advertisement
227
227
[no value]
[no value]
STOEGER ARMS CORP.
[no value]
STOEGER ARMS CORP.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0210.xml
advertisement
228
228
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0211.xml
article
229
229
Miscellaneous
[no value]
Old Bill says...
[no value]
[no value]
[no value]
[no value]
WITH a couple of discarded 5" or 6" pulleys, machined as necessary, and various lengths of pipe for sidepieces and crossbars, one can weld a good shop truck in no time at all. To cut sheet aluminum, brass or copper without burrs, a hack saw or hand saw must have very sharp, accurately set teeth.
PopularScience_19410101_0138_001_0212.xml
advertisement
229
229
[no value]
[no value]
HOBART BROS. CO.
[no value]
HOBART BROS. CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0213.xml
advertisement
230
230
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0214.xml
article
230
230
Miscellaneous
[no value]
Locating Electrical Trouble in a Toy-Train Transformer
[no value]
[no value]
[no value]
H.V.L.
WHEN a toy transformer of the kind used to operate model railroads gets out of order, the trouble is usually caused by a broken connection. Plug in the transformer and hold it close to your ear. If no hum is heard, the break is in the 110-volt wiring, and the trouble can often be found at the point where the cord passes through the porcelain bushing in the case.
PopularScience_19410101_0138_001_0215.xml
article
230
230
Miscellaneous
[no value]
Printer's Brass Rule Makes Accurate Straightedge
[no value]
[no value]
[no value]
LEE UNDERHILL
HAVING occasion to rule a number of long lines, I tried to buy a straightedge that was straight. I looked at scores of brass-edged rulers 18" long, and the best of them had a bow of over 1/16". The only satisfactory ones I could find were steel straightedges at artists’ and draftsmen’s supply stores, but these cost several dollars each—more than I wanted to pay.
PopularScience_19410101_0138_001_0216.xml
advertisement
231
231
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0217.xml
advertisement
232
232
[no value]
[no value]
SOUTH BEND LATHE WORKS
[no value]
SOUTH BEND LATHE WORKS
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0218.xml
advertisement
233
233
[no value]
[no value]
Midwest Radio Corporation
[no value]
Midwest Radio Corporation
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0219.xml
advertisement
234
234
[no value]
[no value]
LIGGETT & MYERS TOBACCO CO.
[no value]
LIGGETT & MYERS TOBACCO CO.
[no value]
[no value]
[no value]
PopularScience_19410101_0138_001_0220.xml