Issue: 19230501

Tuesday, May 1, 1923
MAY 1923
5
True
102
Friday, December 5, 2014

Articles
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Popular Science
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PopularScience_19230501_0102_005_0001.xml
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Advertisements
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RADIO CORPORATION OF AMERICA
Radiola RC
RADIO CORPORATION OF AMERICA
Radiola V
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PopularScience_19230501_0102_005_0002.xml
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1
1
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Victor Talking Machine Company
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Victor Talking Machine Company
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PopularScience_19230501_0102_005_0003.xml
masthead
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2
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masthead
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PopularScience_19230501_0102_005_0004.xml
article
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Editorials
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MAN progresses. Only 12,000 years separate us from our ancestor of the stone age — he of the shambling gait and receding forehead. He lived in a cave, fought wild animals with stones and clubs and feared thunderbolts. Science is responsible for man’s mastery of the elements.
PopularScience_19230501_0102_005_0005.xml
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National Salesmen's Training Association
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National Salesmen's Training Association
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PopularScience_19230501_0102_005_0006.xml
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4
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Advertisement: POPULAR SCIENCE
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POPULAR SCIENCE
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PopularScience_19230501_0102_005_0007.xml
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NELSON DOUBLEDAY, Inc.
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NELSON DOUBLEDAY, Inc.
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PopularScience_19230501_0102_005_0008.xml
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6,8,10,12,14,16,18,20,22,24
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PopularScience_19230501_0102_005_0009.xml
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Advertisement
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PopularScience_19230501_0102_005_0010.xml
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GREER COLLEGE
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GREER COLLEGE
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PopularScience_19230501_0102_005_0011.xml
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PopularScience_19230501_0102_005_0012.xml
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PopularScience_19230501_0102_005_0013.xml
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PopularScience_19230501_0102_005_0014.xml
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9
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THEO. AUDEL & CO.
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THEO. AUDEL & CO.
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PopularScience_19230501_0102_005_0015.xml
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Advertisement
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PopularScience_19230501_0102_005_0016.xml
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Advertisement
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PopularScience_19230501_0102_005_0017.xml
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11
11
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19230501_0102_005_0018.xml
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12
12
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Chicago Technical College
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Chicago Technical College
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PopularScience_19230501_0102_005_0019.xml
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12
12
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United Y.M.C.A. Schools
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United Y.M.C.A. Schools
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PopularScience_19230501_0102_005_0020.xml
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12
12
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AMERICAN SHOW CARD SCHOOL
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AMERICAN SHOW CARD SCHOOL
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PopularScience_19230501_0102_005_0021.xml
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12
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F. J. DRAKE & CO.
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F. J. DRAKE & CO.
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PopularScience_19230501_0102_005_0022.xml
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13
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L. L. COOKE
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L. L. COOKE
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PopularScience_19230501_0102_005_0023.xml
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Advertisements
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PopularScience_19230501_0102_005_0024.xml
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NATIONAL RADIO INSTITUTE
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NATIONAL RADIO INSTITUTE
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PopularScience_19230501_0102_005_0025.xml
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Advertisements
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PopularScience_19230501_0102_005_0026.xml
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Nelson Doubleday Inc.
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Nelson Doubleday Inc.
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PopularScience_19230501_0102_005_0027.xml
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18
18
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Chief Draftsman Engineers Equipment Co.
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Chief Draftsman Engineers Equipment Co.
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PopularScience_19230501_0102_005_0028.xml
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Advertisement
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PopularScience_19230501_0102_005_0029.xml
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MEYER BOTH COMPANY
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MEYER BOTH COMPANY
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PopularScience_19230501_0102_005_0030.xml
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18
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SCHOOL OF AUTOMOTIVE ELECTRICITY
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SCHOOL OF AUTOMOTIVE ELECTRICITY
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PopularScience_19230501_0102_005_0031.xml
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19
19
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Exterminating Engineers of America
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Exterminating Engineers of America
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PopularScience_19230501_0102_005_0032.xml
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UNIVERSITY OF APPLIED SCIENCE
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UNIVERSITY OF APPLIED SCIENCE
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PopularScience_19230501_0102_005_0033.xml
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PopularScience_19230501_0102_005_0034.xml
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PopularScience_19230501_0102_005_0035.xml
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PopularScience_19230501_0102_005_0036.xml
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ALLIED MERKE INSTITUTES, Inc.
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ALLIED MERKE INSTITUTES, Inc.
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PopularScience_19230501_0102_005_0037.xml
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Advertisements
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PopularScience_19230501_0102_005_0038.xml
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Garden City Pub. Co.
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Garden City Pub. Co.
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PopularScience_19230501_0102_005_0039.xml
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24
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COYNE SCHOOL OF DRAFTING
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COYNE SCHOOL OF DRAFTING
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PopularScience_19230501_0102_005_0040.xml
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PopularScience_19230501_0102_005_0041.xml
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AMERICAN INSTITUTE OF HUMOR
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AMERICAN INSTITUTE OF HUMOR
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PopularScience_19230501_0102_005_0042.xml
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24
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FRANKLIN INSTITUTE
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FRANKLIN INSTITUTE
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PopularScience_19230501_0102_005_0043.xml
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Advertisements
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PopularScience_19230501_0102_005_0044.xml
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PopularScience_19230501_0102_005_0045.xml
article
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THEY SAY-Comments of the Month by Men of the Hour in Science
DR.PERCY STICKNEY GRANT
EDWARD B. CRAFT
DR. HUDSON MAXIM
BENEDICT CROWELL
THOMAS A. EDISON
DR. CHARLES P. STEINMETZ
LEE DE FOREST
PROFESSOR WILLIAM STARR MYERS
PROFESSOR FREDERICK J. ROGERS
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Rector of the Church of the Ascension, New York City, who boldly has faced the issue of harmonizing the church with modern science: "I WOULD much rather be the bright son of a peasant than the degenerate son of a duke, and I would much rather be on the upgrade from an ape than on the downgrade from Adam.
PopularScience_19230501_0102_005_0046.xml
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A. H. GREBE & CO., Inc.
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A. H. GREBE & CO., Inc.
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PopularScience_19230501_0102_005_0047.xml
article
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29,30
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Is Rainmaking Riddle Solved?
Amazing Success of Fog-Blasting Airplanes Brings New Attempt to Produce Heavy Rainfall by Spraying Storm Clouds with Electrically Charged Sand
What It May Mean
Public Was Skeptical
How Fog Is Dispelled
Electrically Charged Sand
Captive Balloon Clears Flying Field
Would Drive Away the Gloom
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Manus McFadden
OF ALL the marvelous achievements of modern science there is none that offers more dramatic possibilities than the recent amazing demonstration of two scientists who claim to be able to make, at will, rain, by precipitating clouds, or sunshine, by dispelling fogs.
PopularScience_19230501_0102_005_0048.xml
article
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The Science of Laughter
An Interview with WILL ROGERS
The Effects of Laughter
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Edgar C. Wheeler
WHY should people laugh? What makes us shake our bodies and emit strange noises when something strikes us funny? And what effect, if any, have these apparently unnecessary contortions on our bodily health, our mental well-being and our success?
PopularScience_19230501_0102_005_0049.xml
article
32
32,33,34,105,106,107
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Man—An Animal Invention
How Worms, Fish, and Reptiles Helped Create the Complex Machinery of the Human Body
William K. Gregory
Bones Our Patent
Your Body a Marvelous Machine
Fishlike Creature Invents Legs
Bones Found
The Secret
Billions of Cells in Human Brain
How Hands Were Developed
Use of Brain Prolonged Life
Merely an Outline Possible
Where Man Has Surpassed Nature
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E. E. Free
A LIVING museum of the thousands of inventions devised by the striving creatures of past millions of years has been preserved for us inside the human body. It is a record of creation. The bones are levers that move on self-oiling joints. The eye is a photographic camera, lens and all, and the sensitive plate inside it is so wonderful an invention that it renews itself continually and can photograph many images, one after the other, and accurately pass on each one of them to the brain.
PopularScience_19230501_0102_005_0050.xml
article
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A Baby—An Open Safety Pin
How Doctor's Ingenuity Saved Child’s Life
Missing—One Safety Pin
How the Job Was Done
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TWO looped wires. A tiny pair of pincers at the end of a third wire sheathed in a hollow tube. A tiny electric light bulb. With these as his only tools, Dr. J. H. Buff, young throat specialist of Atlanta, Ga., recently succeeded in fishing an open safety pin from a baby’s stomach without using knife or anesthetic.
PopularScience_19230501_0102_005_0051.xml
article
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36
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Artists' Thumbprints to Identify Paintings
Which of These Types of Fingerprints Is Most Like Yours?
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LIKE the climax of a fantastic detective story is the latest achievement of science in comparing fingerprints to identify as a real Da Vinci an age-worn canvas, recently bought by a New York collector of art. The question whether a certain painting is the original work of a great master can now be determined absolutely, simply by examining the painting for fingerprints left on the canvas by the artist and comparing these with fingerprints found on paintings known to be originals.
PopularScience_19230501_0102_005_0052.xml
article
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Miniature Moving Airplane Trains Army Gunners
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TO TRAIN anti-aircraft gunners in sighting a moving airplane, an American army officer has designed an indoor moving target that duplicates actual wartime conditions. From the top of a 30-foot pole, mounted on an electrically dr ven truck, are suspended a series of wires along which a miniature airplane can be made to move up and down by the truck operator.
PopularScience_19230501_0102_005_0053.xml
article
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39
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Autos Weighed without Jacks
Ironing board and Table in Wall
Linemen's Gloves Tested under 10,000 Volts
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PORTABLE scales that weigh motor trucks without using jacks are aiding in the enforcement of motor vehicle laws designed to protect roads from overloading. With two of these scales, developed by H. C. Berry of the University of Pennsylvania, officers can determine the exact weight of a truck in a few moments.
PopularScience_19230501_0102_005_0054.xml
article
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40,41
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Are You Too Fat?
Better Be Underweight than Over, Says Famous Medical Scientist, Who Tells How to Exercise and Diet to Grow Thin
The Average Person Is Overweight
Watch Your Waistline!
Here’s the Ideal Weight for You
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HAVE you stood recently on a public scale, scanning the printed table telling you how much you should weigh at a certain age and certain height? And have you felt a glow of satisfaction when the indicator swung round to a figure corresponding to, or just a bit beyond, the "average weight," supposed to be the "correct weight" for you?
PopularScience_19230501_0102_005_0055.xml
article
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Hooligan Fish Burn as Candles
Rendering Out the Oil
Apartment House Soprano Wears Muffler Muzzle
Artificial Light Tests Ink
Martyrs of the Speedway
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HAVE you ever used a fish for a candle? Probably not, unless you have spent some time in the Far North or on the northern Pacific Coast. But the Alaskan "sourdough" will tell you that the finest food fish in the world may be lighted and burned—tail up—just like a candle.
PopularScience_19230501_0102_005_0056.xml
article
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Is Water Cooling for Autos Out of Date?
Advantages of Air Cooling
Air-Jacketed Fins Cool Cylinders
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Harold F. Blanchard
THE air cooled automobile engine is coming into its own. Today it is safe to predict that a large percentage of cars of the future will be air cooled rather than water cooled— a prediction that is well borne out by the success of the newest air cooled car on the market, put out by one of America’s foremost automobile manufacturers.
PopularScience_19230501_0102_005_0057.xml
article
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Bright Lights Cost New York $70,000,000 a Year
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PopularScience_19230501_0102_005_0058.xml
article
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44
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Automatic Quartermaster Steers Ship
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ADD to the long list of modern mechanical marvels the self-steering ship, guided by an automatic quartermaster. This remarkable maritime development is made possible by the invention of the steering gyroscope, an instrument based on the inventions of Elmer A. Sperry, of New York City, and is an adaptation of the gyro-compass now extensively employed.
PopularScience_19230501_0102_005_0059.xml
article
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44
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Ringing of Alarm Clock Switches Off Lights
Raw Starch Is Digestible
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TO SWITCH off the lights automatically in show windows of stores after closing time an ingenious alarm clock control has been invented by William Frisby, of Colchester, England. The device, which can be fastened to any ordinary snap switch, consists of a hinge attached to the switch, two chains, a ring, and an ordinary alarm clock.
PopularScience_19230501_0102_005_0060.xml
article
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45
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Illuminated Lifeline to Aid in Shipwreck Rescues
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TO AID coastguards in tracing the shotline of a breeches buoy when it is shot out to a stranded ship at night, J. D. Bowers has submitted to the United States Government an invention which he claims will illuminate a line sufficiently to inform the men on shore whether it has crossed the ship’s deck.
PopularScience_19230501_0102_005_0061.xml
article
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Midget Cyclecar Coupé Marks Radical Step in Auto Design
Engine Mounted on Vertical Shaft
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ALL conventional rules of automobile construction have been thrown overboard in a startling new development of the small cyclecar designed by two British motor enthusiasts—a streamlined midget coupé that stands no higher than a man’s shoulder, runs on top gear at a walking pace, and travels at a speed of 55 miles an hour.
PopularScience_19230501_0102_005_0062.xml
article
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Boring the World's Largest Underwater Motor Highway
How Engineers Build a Tunnel Miracle
Digging a $30,000,000 Burrow
Where Sandhogs Work under Pressure
Workmen Brave Dread Disease
Workmen Risk Death to Complete Feat
What Traffic Will Be in 1940
Press a Button, and Automatic Phonograph Plays Your Tune
All You Do Is Listen
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ARMED with keen, knifelike edges, four gigantic steel cylinders bore like moles beneath the Hudson River, cutting their way, inch by inch, through sand and solid rock and building steel-lined burrows behind them. Two of them strike out from the New York shore, westward bound; two from the New Jersey side, eastward bound.
PopularScience_19230501_0102_005_0063.xml
article
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Quarter Million Stamps Form Mosaic
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IT TOOK 250,000 cancelled postage stamps and a generation of labor to complete a novel mosaic, entitled "Philatelia," by W. Reichelt, an artist of Teplitz, Czecho-Slovakia. The picture, portraying a woman gathering poppies, contains a collection of postage stamps of all the nations of the world — a wide variety being necessary to obtain the desired color combinations.
PopularScience_19230501_0102_005_0064.xml
article
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48
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World’s Largest Handsaw Cuts Rolls of Paper
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A 48-inch handsaw, said to be the largest in the world, has been built by an Eastern manufacturer for special use in cutting through rolls of paper wound tightly on brass tubes. Many of these paper rolls are 24 inches in diameter, while the brass tubes usually are two inches thick with one-sixteenth-inch walls.
PopularScience_19230501_0102_005_0065.xml
article
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Sponge Spreads Mucilage from This Container
Hawaiian Plantation to Combat Leprosy
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THE mucilage bottle has long been an annoyance because of the difficulty of keeping the mucilage in proper condition while still providing a ready means of using it neatly. A New York concern has recently marketed a container the top of which is provided with a sponge.
PopularScience_19230501_0102_005_0066.xml
article
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48
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Car Sides Are Track for Unloader
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THE problem of quickly unloading railroad cars filled with loose building and similar materials has been solved by a recently invented portable car unloader, that is now put into practical use in many cities on the Pacific Coast. Loose materials are often shipped to the railroad sidings in open top (gondola) cars.
PopularScience_19230501_0102_005_0067.xml
article
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49
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Rented Goats Clear Missouri Farm Land
Goats Yield Threefold Income
Where They Come From
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FOR Rent: Four thousand Angora goats for the season at 50 cents a goat. Guaranteed to clear farm lands of undergrowth and rubbish." That sounds like one more version of the ancient wheeze about the goat and the tin can. But it's not a joke at all for Ely Ashcraft, a farmer of Stone County, Mo.; it’s a science developed into a good paying proposition.
PopularScience_19230501_0102_005_0068.xml
article
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Oblong Lens Detects Counterfeits
Artificial Sunlight for Small Aquariums
Car Jumps Back on Track
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TO MINIMIZE the possibility of cashing altered checks and counterfeit bills at banks, a New York concern has recently placed on the market a magnifier that enables the teller to determine immediately any deviation from the design of a genuine bill or from a genuine signature on a check presented at the bank.
PopularScience_19230501_0102_005_0069.xml
article
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Motorized Grab Bucket Cleans Sewers
Auto Hoisted to Window on Seventeenth Floor
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A MIDGET grab bucket of the orange peel type, which does away with the odious task of cleaning sewers or manholes by hand and so cuts the cost of the labor, has been invented by P. J. Healy, of New York City, and is being successfully used in cleaning out the basins in Perth Amboy, N. J.
PopularScience_19230501_0102_005_0070.xml
article
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Chickens Eat "Cafeteria Style" on Uncle Sam’s Poultry Farm
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THE popularity of the "help yourself" plan of dining is not limited to humans. On the 60-acre chicken farm maintained by the United States Department of Agriculture, at Beltsville, Md., the cafeteria style of eating is practised in satisfying the appetites of approximately 4000 fowls.
PopularScience_19230501_0102_005_0071.xml
article
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51
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Hand Crank Runs Simple Truck Loader
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IN ORDER to facilitate the loading of trucks, a Swiss concern has perfected a loading winch that raises an elevating platform along two skids up to the level of the truck bottom. When lowered, the platform is seven inches above the ground. This is sufficiently low for a barrel or crate to be rolled or tipped upon it.
PopularScience_19230501_0102_005_0072.xml
article
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Auto Speeders Checked Automatically
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A SPEED control mechanism for automobiles has been invented by Col. Charles Gore, of Los Angeles, Calif., to automatically check a car from exceeding a specified speed limit, notifying the driver when the limit is reached, and registering the attempts made by the chauffeur to exceed that limit.
PopularScience_19230501_0102_005_0073.xml
article
51
51
[no value]
[no value]
Motor Driven Bracket Drill for Small Workshop
Starving to Death
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[no value]
A SIMPLE, inexpensive post bracket drill, suitable for operation within a radius of 3½ feet, has been perfected recently by a concern in Cleveland, Ohio, to provide a useful addition to the small workshop of the mechanic or garage owner. Operated by a small electric motor, the machine is especially adapted to the manufacture of stoves, as well as electrical and switchboard work.
PopularScience_19230501_0102_005_0074.xml
article
52
52
[no value]
[no value]
Fisherman Goes to Sea with a Horse and Wagon
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UTILIZING the tides to trap fish, Warren Burgess of New Brewster, in the Cape Cod section of Massachusetts, has established what he calls a "fish farm." He "harvests" his catches with a horse and wagon. Nearly two miles out to sea on the flats, Burgess has erected weir nets or fish traps, the netting being supported by sturdy saplings.
PopularScience_19230501_0102_005_0075.xml
article
52
52
[no value]
[no value]
Newest Sport Combines Football, Basketball, and Soccer
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SPEEDBALL—an exciting game for everybody, combining skill, speed, and teamwork—is America’s latest sport. Borrowing the forward pass, punt, and drop kick of football, the passing of basketball and the kicking, dribbling, and fast charging of soccer, the new combination game has become immensely popular at the University of Michigan, where it was invented by Elmer D. Mitchell.
PopularScience_19230501_0102_005_0076.xml
article
53
53,54
[no value]
[no value]
DOPE Where It Comes From; How It Is Made, and Its Effect on the Nervous System
How Opium Is Produced
Cocoaine Addict Becomes Violent
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[no value]
Lorry Jacobs
READ what Doctor Simon says of drugs and drug addiction. He points out that there are enough victims of narcotic habits in the United States to populate a city the size of St. Louis. And the number is increasing! For years Doctor Simon has been one of the country’s foremost authorities on habit forming drugs.
PopularScience_19230501_0102_005_0077.xml
article
54
54
[no value]
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Giant Airship Hangar Hoisted without Derricks
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GIANT trusses for each of two airship hangars under construction in the suburbs of Paris, and said to be the largest of their kind in the world, are being erected in a novel way. They are assembled on the ground and then hoisted into position, the center section being erected in the same manner as that of the ill-fated Quebec bridge.
PopularScience_19230501_0102_005_0078.xml
article
55
55
[no value]
[no value]
Tiny Motor Starts Novel Glider
Does Your Sense of Touch Play You False?
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WHILE French airmen have been smashing world’s gliding records, remaining in the air without engine power for more than eight hours at a stretch, a German inventor has been busy perfecting a light sailplane of unusual design, equipped with a two-cylinder, four-horsepower motor.
PopularScience_19230501_0102_005_0079.xml
article
55
55
[no value]
[no value]
Switch in Handle of Trouble Lamp
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SQUEEZING the fingers between the guard wires on a trouble lamp to turn on the switch has caused so much annoyance in the past, that a manufacturer in Valparaiso, Ind., has decided to eliminate this difficulty by placing the switch in the handle where it is within easy reach of the thumb.
PopularScience_19230501_0102_005_0080.xml
article
55
55
[no value]
[no value]
Poisonous Mushroom Reaches Full Growth in Twelve Hours
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ONE of the most amazing instances of rapid plant growth is found in the case of the fly fungus or Amanita muscaria, which reaches full maturity within 12 hours after its cap first pierces the surface of the ground. In general appearance this mushroom resembles the edible type, but it is extremely poisonous, for it has a large content of muscarine, a poisonous alkaloid.
PopularScience_19230501_0102_005_0081.xml
article
56
56
[no value]
[no value]
Electric Log Tells Ship's Speed
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A NEW electric submerged log, by which it is possible to gage accurately the distance a ship travels in a given length of time, is the invention of Captain Chernikeef, lately chief hydrographer of the Russian Royal Navy. Manufacturers of the device claim that it places the gaging of distance on the same plane as the gaging of direction by the compass and the gaging of time by a chronometer in navigation.
PopularScience_19230501_0102_005_0082.xml
article
56
56
[no value]
[no value]
Self-Holding Last for Shoe Repair at Home
Human Kidney Is Complex Filtration Plant
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A SELF-HOLDING shoe last, which makes it unnecessary for a cobbler to hold the shoe with one hand while working on it with the other, has been invented by John S. Butcher, of Vineland, N. J., for use by persons who repair their own shoes, as well as by professional shoe repairers.
PopularScience_19230501_0102_005_0083.xml
article
56
56
[no value]
[no value]
Electricity Makes New Wine as Mellow as Oldest Vintage
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OF COURSE, this is out of date in America, but—a French professor, Dr. Charles Henry of the Sorbonne, Paris, France, has just perfected a method of aging wines by electricity! The usual process of aging consists of breaking up certain chemical compounds to form other compounds.
PopularScience_19230501_0102_005_0084.xml
article
57
57
[no value]
[no value]
Concrete Armor to Protect Piles from Borers
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INCASING piles in a two-inch coat of reinforced concrete armor has solved the problem of preventing the destruction of docks and wharves by the teredo and other boring mollusks, according to the statements of eminent engineers. The teredo, which is the most dangerous and the most prolific of these borers, is a mollusk, although it looks like and is often erroneously referred to as a worm.
PopularScience_19230501_0102_005_0085.xml
article
57
57
[no value]
[no value]
Automatic Road Building Truck Spreads Gravel Evenly
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[no value]
FOR highway maintenance work, a truck with a hopper body and adjustable scraper, recently placed upon the market by an Ohio concern, transports and automatically spreads gravel or other road material without the aid of hand shoveling. The truck has a capacity of three tons of material and is constructed in the shape of a hopper, with a long narrow sliding gate forming the front sloping side of the body By opening this gate, the driver from his seat controls the flow of material from the hopper and thins the depth to which the material is deposited on the road.
PopularScience_19230501_0102_005_0086.xml
article
58
58
[no value]
[no value]
Portable Jointed Tube Bridge Travels on Wheels
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AN EXTRAORDINARY portable bridge, built of interchangeable tubes and designed by Major C. E. Inglis, of the British Royal Engineers, is finding considerable peacetime use because of its extreme lightness, strength, and easy and rapid erection across a river or impassable gorge.
PopularScience_19230501_0102_005_0087.xml
article
58
58
[no value]
[no value]
How Movie Screen Shows Heart Throb of Embryo Chick
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WHAT the motion picture has done in depicting the operations of human life, it now promises to do in portraying invisible, microscopic life in action. We can now watch on the screen the rhythmical action of the living heart of an embryo chick.
PopularScience_19230501_0102_005_0088.xml
article
59
59
[no value]
[no value]
Three-Inch Apartment Walls Keep Out Noise
Plaster Boards Help Kill Sound
Constant Noise Is Injurious
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[no value]
CONSTRUCTING partition walls only three inches thick for apartment houses so that they are soundproof and fireproof even though extremely light, is a problem that has been solved in the building of one of New York’s most modern apartments, by the use of eel grass quilt hung behind vertical wires that are strung from ceilings to floors.
PopularScience_19230501_0102_005_0089.xml
article
59
59
[no value]
[no value]
Clamshell Bucket and Screen Clean Ballast along Railway
About Inbreeding
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[no value]
THE cinders, dirt and other foreign matter that clogs rock ballast under railroad tracks and so retards drainage along the line is being successfully removed by means of an ingenious mechanical ballast cleaner operated by a large Eastern railroad.
PopularScience_19230501_0102_005_0090.xml
article
60
60
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[no value]
Motorized Fish Reel Leads Month's Novelties
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PopularScience_19230501_0102_005_0091.xml
article
61
61
[no value]
[no value]
Blizzard Warnings from the Arctic
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A CHAIN of arctic weather stations surrounding the North Pole, some of them on ships afloat in the polar seas and all of them in daily communication by radio with the rest of the world— this is the next advance in weather forecasting now being urged upon government officials in Washington.
PopularScience_19230501_0102_005_0092.xml
article
62
62
[no value]
[no value]
Sliding Celluloid Windows Convert Open Car into Sedan
Car Is Completely Inclosed
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CELLULOID windows that instantly convert an open touring car into a closed car have been installed in a new English all weather model that recently appeared on the market. When the automobile is used as an open car, the windows disappear into pockets in the doors and sides of the tonneau.
PopularScience_19230501_0102_005_0093.xml
article
62
62
[no value]
[no value]
Colors Fused into Glass by New Process
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STAINED glass windows that usually cost many thousands of dollars can be made cheaply, and labels of any color can be imprinted on glass bottles at a cost less than that of printing them on paper, it is claimed, as the result of a recent invention of a new method of glass manufacture by Kalman Warga of New York.
PopularScience_19230501_0102_005_0094.xml
article
62
62
[no value]
[no value]
Ruler Serves as Blotter
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MOUNTED on the reverse side of an ingenious desk ruler are nine strips of blotting paper just wide enough for a signature. The blotters are fastened by clips.
PopularScience_19230501_0102_005_0095.xml
article
62
62
[no value]
[no value]
Aircushion Rowboat Is Tied in Bundle
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[no value]
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[no value]
A COMPACT and portable inflated rowboat has been made possible for the sportsman by Charles F. Smyth, of New Haven, Conn., who has devised a craft, soft as a pneumatic mattress, by attaching four inflated cylinders to a waterproof fabric bottom.
PopularScience_19230501_0102_005_0096.xml
article
63
63
[no value]
[no value]
Models of Typical American Used by Auto Designer
How Cars Are Made to Fit Average Driver
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[no value]
SMALL celluloid manikins, representing exactly the physique of the average American, are now being ingeniously used by automobile designers to ensure for driver and passengers the maximum comfort and convenience in each new model they turn out.
PopularScience_19230501_0102_005_0097.xml
article
63
63
[no value]
[no value]
Novel Shockproof Wheels Lengthen Life of Motor Truck
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MUCH of the road jar that tears at the chassis of the average motor truck, shortening the life of the car, is said to have been eliminated by a new and unusual shockproof wheel mounted on two flexible cone hubs. The use of the wheels, it is claimed, will greatly increase tire mileage.
PopularScience_19230501_0102_005_0098.xml
article
64
64,65
[no value]
[no value]
5000 Fathoms Under the Sea
Sound Waves Probe the Blackest Ocean Depths
How U. S. Destroyers Chart Atlantic Floor
The Earth’s Three Divisions
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[no value]
SCIENCE, by measuring the speed of sound waves in water, is wresting from Davy Jones all the secrets of his locker—the mysteries of uncharted ocean valleys, submerged volcanoes and mountains, abysmal caverns and hills. With one gesture mankind is able at last to penetrate "bottomless" holes and to replace age-old guess and tradition with a faithfully accurate map of the bottom of the sea.
PopularScience_19230501_0102_005_0099.xml
article
65
65
[no value]
[no value]
Many Machine Tools Combined in Electric Hand Drill
When a Drill Is a Saw
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COMBINING more than a dozen machine tools in one, an electric hand drill of recent invention is adapted for a wide variety of light work in the small workshop, home, or farm. Its most valuable uses are as a turning lathe, a circular saw drive, and a grinding machine.
PopularScience_19230501_0102_005_0100.xml
article
66
66
[no value]
[no value]
World's Queerest Animal Shown in Zoo
Furry Freak Said to Be a Left-Over from Dim Ages
Duck-Billed, Web-Footed Mammal that Lays Eggs, Comes 10,000 Miles
[no value]
[no value]
[no value]
TRAVELING in an extraordinary "Pullman" cage built as an artificial replica of its home in the bank of the Namoi River, New South Wales, the strangest creature in the world— an Australian duck-billed platypus—recently was transported alive for 10,000 miles across the Pacific and the American continent to the New York Zoological Park.
PopularScience_19230501_0102_005_0101.xml
article
66
66
[no value]
[no value]
New Wing Flap Airplane Control Makes City Flying Safer
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[no value]
A NEW device to replace the "trailing edge" aileron, has been perfected by Grover Loening, airplane inventor and builder. He declares it will widen the scope of airplane usefulness by facilitating flying in the very heart of a city, and will prevent accidents due to "air pockets."
PopularScience_19230501_0102_005_0102.xml
article
67
67
[no value]
[no value]
To Broadcast Baseball by Radio Movies
Action Photos of World Events to Be Flashed on Distant Screens
Turning Photos into Radio Waves
Light Control
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[no value]
[no value]
MOTION pictures of world events, broadcasted by radio and thrown simultaneously on screens in all parts of the world immediately after they happen! This is the prediction of C. Francis Jenkins, a successful Washington, D. C., inventor. Jenkins has perfected an apparatus that transmits photographs by wireless for a distance of several miles, and he plans to improve his machine so that movies may be sent by radio at the rate of 16 a second.
PopularScience_19230501_0102_005_0103.xml
article
68
68
[no value]
[no value]
PEANUTS
How Scientist's 145 Varieties Helped Lowly "Goober" to Rise
The Peanut's Progeny
Steak vs. the Goober
Do You Eat Your Half Bushel of Peanuts Each Year?
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[no value]
[no value]
AT LAST the lowly peanut has graduated from the circus tent. It has become, almost overnight, one of America's most important and most wholesome food products. It serves more than 100 needs of man. This spectacular rise of the humble "goober" is due chiefly to the patient experiments of one man—George W. Carver, professor of agricultural science and husbandry at Tuskegee Institute.
PopularScience_19230501_0102_005_0104.xml
article
69
69
[no value]
[no value]
Iron Finger Discovers Sunken Treasure
How Falling Mass of Iron Located Rich Copper Cargo Buried in Mud "Somewhere in New York Bay"
Harbor Is Charted
The Ammeter Reports Success
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[no value]
AN ELECTRICAL needle that searches the sea's bottom for sunken metal has been responsible for the salvaging of a million pounds of copper, valued at $150,000, from the bottom of New York Harbor. Divers predict that the ingenious device, which is the invention of R. E. Chapman, a naval engineer, will reclaim millions of dollars in lost cargoes.
PopularScience_19230501_0102_005_0105.xml
article
70
70
[no value]
[no value]
Put the Kitchen on an Efficiency Basis
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[no value]
PopularScience_19230501_0102_005_0106.xml
article
71
71
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[no value]
Bandsaw Cuts Wood or Metal
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[no value]
A PORTABLE bandsaw, designed to cut either wood or metal, is finding ready application in small plant repair shops, where its twofold service eliminates the necessity for separate machines. The machine has a two-speed attachment—the slow speed for metal work; the high speed for wood.
PopularScience_19230501_0102_005_0107.xml
article
71
71
[no value]
[no value]
Here’s a Way to Pull Weeds without Backache
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TWO prongs attached to a long hardwood handle and connected by a crosspiece form the weed puller recently invented to take the kinks out of the gardener’s back. The sharp prongs are slipped under the roots of a weed and the handle is pulled upward.
PopularScience_19230501_0102_005_0108.xml
article
71
71
[no value]
[no value]
Tree Branches Crafted to Form Living Splice
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TO PROTECT fruit trees from severe storms that often split branches and even completely uproot trees, investigators of the Ohio Agricultural College have succeeded in intertwining branches to form living splices and so support each other.
PopularScience_19230501_0102_005_0109.xml
article
71
71
[no value]
[no value]
Knock-Down Cart Is Boy Scouts’ Table
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[no value]
BOY Scouts of Madison, Wis., have built an ingenious collapsible "trek cart" designed so that it can be used not only for carrying equipment on the hike, but for "furnishings" about the camp. The body of the light, two-wheeled cart is a shallow box, the sides of which are removable and so constructed that they can be used as benches when removed.
PopularScience_19230501_0102_005_0110.xml
article
72
72
[no value]
[no value]
Champion Angler Casts Farther than Babe Ruth Can Hit a Ball
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[no value]
DID you ever try the sport of fishing on dry land, several miles away from any water or any fish? If not, you’ve missed a sport enthusiasts say is the greatest thriller of the day and that medical authorities say is an ideal outdoor exercise. In fact, the game of which to cast in surf fishing, these men seldom see the ocean.
PopularScience_19230501_0102_005_0111.xml
article
72
72
[no value]
[no value]
Where Do You Live? Your Energy Depends on the Climate
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PopularScience_19230501_0102_005_0112.xml
article
73
73
[no value]
[no value]
"Lost Pharaoh" Defies Scientists to Bring His Mummy to Light
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HOW will scientists get at King Tutankhamen’s mummy? What further undreamed - of splendors lie hidden within the inner burial chamber of the great Pharaoh who ruled Egypt more than 3000 years ago—500 years before Solomon? The world, fired with curiosity and imagination by the richest treasure find in history, must wait in suspense for an answer.
PopularScience_19230501_0102_005_0113.xml
article
74
74
[no value]
[no value]
Conveniences for Spring Touring
A Comfortable Auto Bed for Two—Other Novel Accessories of the Month
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PopularScience_19230501_0102_005_0114.xml
article
75
75,76
[no value]
[no value]
How to Cut Your Car Costs
Auto Expert Tells Fifteen Every-Day Ways to Keep Expenses and Depreciation Down to the Ideal Low Mark
Anybody Can Save
The Typical Auto Owner
Three Important "Don’ts" for Car Owners
Bumpers Save Damage
Why Brakes Wear Out
[no value]
[no value]
H. F. Blanchard
"I'VE just bought a new car," the visitor across my desk announced, "and I've come to ask you how to keep my expenses down to the bone. In three years my last car cost me more than $2700— upward of nine cents a mile. That's more than I can afford; but what can I do?
PopularScience_19230501_0102_005_0115.xml
article
77
77
[no value]
[no value]
Champions Show How to Change Tires Quickly
Experience and the Right Tools
Loosen Tire Evenly All Around
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How long does it take you to change a tire? Do you dread the job more than any other job about your car? Do you bang the rim with a hammer and skin your knuckles trying to get the stubborn tire off? If so, you may be encouraged to know that all the drudgery can be eliminated once you have the right kind of tools and learn a couple of simple tricks.
PopularScience_19230501_0102_005_0116.xml
article
78
78
[no value]
[no value]
Handy Toolboxes You Can Make for Your Car
Toolbox Built under Runningboard
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[no value]
ANY motorist can build a tool compartment for his car that will meet his needs better than the ordinary underseat toolbox. The usual box is objectionable because the tools are not readily accessible and the space is too limited for carrying an adequate assortment, but an ample kit can be carried conveniently in a tool compartment built into the left front door pocket, or placed in a tray box countersunk in the runningboard, or housed in a compartment built over the gasoline tank.
PopularScience_19230501_0102_005_0117.xml
article
78
78
[no value]
[no value]
Attaching a Large Steering Wheel
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Joe V. Romig TO REPLACE a small steering wheel with a larger one is neither expensive nor difficult, if the method illustrated is followed. Four small brackets made of thin sheet steel or brass are cut to the shape shown, and the rectangular end is rounded to fit the contour of the lower side of the rim.
PopularScience_19230501_0102_005_0118.xml
article
78
78
[no value]
[no value]
Two Spark Plug "Kinks"
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[no value]
[no value]
BY USING auto curtain snap buttons as shown, a tight spark plug connection is insured. Another kink is to tap a piece of metal to take a spark plug and then fasten it to the motor. It serves for testing and holds a spare plug.—L. S.
PopularScience_19230501_0102_005_0119.xml
article
79
79,102,103,104
The Home Workshop
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Attractive Pergola Garage Costs Little to Build
Pilasters Ornament the Front
How the Frame Is Built
Phonograph Needle Scriber
[no value]
[no value]
Arthur Wakeling
BETWEEN 800,000 and 900,000 autos will be sold to new owners in 1923, according to a reliable trade estimate. If you are one of this vast army of new motorists, and if you have no place to store your new car, you will find many interesting and money-saving suggestions in this article on garage building.
PopularScience_19230501_0102_005_0120.xml
article
80
80
The Home Workshop
[no value]
Homemade Instruments for Running Simple Surveys
Used like Regular Level
Ruler Serves as Alidade
[no value]
[no value]
Capt. Roger Sherman Hoar
ALMOST any simple bit of surveying, such as locating boundaries, mapping small or large land tracts, running a profile for the location of drainpipes, drawing contours as a basis for grading or landscape gardening, can be performed fairly accurately by means of wooden instruments that can be made quickly and cheaply.
PopularScience_19230501_0102_005_0121.xml
article
80
80,116,117
The Home Workshop
[no value]
Portable Searchlight Operates on House Circuit
Automatic Dibble Saves Time in Transplanting Small Plants
"Teddy-Be-Nimble" Toy
[no value]
[no value]
H. H. Parker
A SMALL low voltage searchlight is a convenient device to have about the house where there is a 110or 220-volt alternating current lighting circuit. If a garage or chicken house is located in a dark corner of the premises or if a strong light is needed in an emergency, a length of lampcord attached to the searchlight can quickly be plugged into any lamp socket or baseboard connection so that the light can be taken to the back porch, barn, garage, or wherever needed.
PopularScience_19230501_0102_005_0122.xml
advertisement
81
81
[no value]
[no value]
S. C. JOHNSON & SON
[no value]
S. C. JOHNSON & SON
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[no value]
PopularScience_19230501_0102_005_0123.xml
article
82
82,109,110
[no value]
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The Secrets of Making Realistic "Antique" Furniture
Painted Pieces Require Many Coats
Well Seasoned Wood Necessary
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[no value]
James S. Godfrey
DO YOU know why antique furniture is now extremely popular—and justly so? It is not because its rarity gives it unusual dollars and cents value, or because it is a reproduction that happens to imitate cleverly the appearance of costly old pieces.
PopularScience_19230501_0102_005_0124.xml
advertisement
83
83
[no value]
[no value]
UNDERWOOD TYPEWRITER COMPANY, INC.
[no value]
UNDERWOOD TYPEWRITER COMPANY, INC.
[no value]
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PopularScience_19230501_0102_005_0125.xml
article
84
84,86,87,88,89,90,91,92,93,94,95,96,97
[no value]
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Better Shop Methods
Sturdy Bench Shaper Cuts Production Costs
Cheaply Made Shop Truck Handles Heavy Material
Drilling and Tool Setting Gage Placed on Lathe Tailstock
Sturdy Bench Shaper
Sturdy Bench Shaper
Sturdy Bench Shaper
Turret for Shaper Saves Time on Duplicate Work
Prize-Winners Reveal the Secrets of Their Success
Adjustable Stool for Shop Bench
Heat Properly Applied Reduces the Pipe in Cast Ingots
Cracks in Castings
How a Pattern Maker Can Keep His Bench Top True
Three-Jaw Chuck Used for Boring Eccentric Holes
Tools Are Readily Accessible in Unique Inclined Toolchest
Ladder Scaffold Simplifies Work of Painting Factory Windows
How to Color Steel Blue
Milling Flutes with Two Cutters
Setting Angles with Combination Square and Disk
Lanolin Conquers Skin Troubles Common to Metal Workers
Inexpensive Fixture on Wood Lathe Used for Drawing Shells
Keeping Oilstones in Condition
Step Block Serves as Gage for Planing Duplicate Pieces
Celluloid Templet Saves Time in Lettering Drawings
Shopmade Turnbuckle Saves Time in Emergency Repairs
[no value]
[no value]
Joe V. Romig
ANY machine shop, however small, is incomplete without a shaper. Even the experimental shop should have a shaper for the machining of flat surfaces. Much of the work done nowadays on the shaper was once done by chipping and filing. Rather than go to the expense of buying a bench shaper, the mechanic in the small shop can make one of his own that will be a sturdy, true-running machine, with plenty of power to take good cuts.
PopularScience_19230501_0102_005_0126.xml
advertisement
85
85
[no value]
[no value]
Taylor Instrument Companies
[no value]
Taylor Instrument Companies
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0127.xml
advertisement
86
86
[no value]
[no value]
GOODELL-PRATT COMPANY
[no value]
GOODELL-PRATT COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0128.xml
advertisement
87
87
[no value]
[no value]
THE L. S. STARRETT CO.
[no value]
THE L. S. STARRETT CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0129.xml
advertisement
88
88
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0130.xml
advertisement
89
89
[no value]
[no value]
STANLEY TOOLS
[no value]
STANLEY TOOLS
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0131.xml
advertisement
90
90
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0132.xml
advertisement
91
91
[no value]
[no value]
THE PEPSODENT COMPANY
[no value]
THE PEPSODENT COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0133.xml
advertisement
92
92
[no value]
[no value]
SARGENT & COMPANY
[no value]
SARGENT & COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0134.xml
advertisement
92
92
[no value]
[no value]
JOS. DeROY & SONS
[no value]
JOS. DeROY & SONS
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0135.xml
advertisement
92
92
[no value]
[no value]
AMERICAN PRODUCTS CO.
[no value]
AMERICAN PRODUCTS CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0136.xml
advertisement
92
92
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0137.xml
advertisement
93
93
[no value]
[no value]
COYNE ELECTRICAL SCHOOL
[no value]
COYNE ELECTRICAL SCHOOL
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0138.xml
advertisement
94
94
[no value]
[no value]
P. H. HANES KNITTING CO.
[no value]
P. H. HANES KNITTING CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0139.xml
advertisement
94
94
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0140.xml
advertisement
95
95
[no value]
[no value]
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
[no value]
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0141.xml
advertisement
95
95
[no value]
[no value]
SOUTH BEND BAIT CO.
[no value]
SOUTH BEND BAIT CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0142.xml
advertisement
95
95
[no value]
[no value]
Madison Shirt Co.
[no value]
Madison Shirt Co.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0143.xml
advertisement
95
95
[no value]
[no value]
W. B. & J. E. Bolce
[no value]
W. B. & J. E. Bolce
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0144.xml
advertisement
96
96
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0145.xml
advertisement
97
97
[no value]
[no value]
CORONA TYPEWRITER CO.
[no value]
CORONA TYPEWRITER CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0146.xml
advertisement
98
98
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0147.xml
article
98
98,99,100,101
THE HOME WORKSHOP
[no value]
New Motorboats from Old
Repairing the Stern
Cheap Garage Made of Porch Screens and Cement Mortar
Answering the Telephone from Outside the House
[no value]
[no value]
Capt. E. Armitage McCann
THIS is the first of three remarkable articles by Captain McCann, a nationally recognized expert on boating. He tells how to buy an old motorboat cheap and remodel it into a stanch and serviceable craft. Realizing that cost stands between the average man and a motorboat, we asked him to study the subject from all angles and work out ways in which the home worker can save himself hundreds of dollars on the cost of his boat.
PopularScience_19230501_0102_005_0148.xml
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99
99
[no value]
[no value]
Blueprint Service
[no value]
Blueprint Service
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0149.xml
advertisement
99
99
[no value]
[no value]
Remington Typewriter Company
[no value]
Remington Typewriter Company
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0150.xml
advertisement
100
100
[no value]
[no value]
The B.V.D. COMPANY, Inc.
[no value]
The B.V.D. COMPANY, Inc.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0151.xml
advertisement
100
100
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0152.xml
advertisement
101
101
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0153.xml
advertisement
102
102
[no value]
[no value]
The Veeder Mfg.Co.
[no value]
The Veeder Mfg.Co.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0154.xml
advertisement
102
102
[no value]
[no value]
E. C. ATKINS & CO., Inc.
[no value]
E. C. ATKINS & CO., Inc.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0155.xml
advertisement
103
103
[no value]
[no value]
RUGGLES MOTOR TRUCK COMPANY
[no value]
RUGGLES MOTOR TRUCK COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0156.xml
advertisement
103
103
[no value]
[no value]
INTERNATIONAL BODY WORKS
[no value]
INTERNATIONAL BODY WORKS
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0157.xml
advertisement
103
103
[no value]
[no value]
Bastian Bros. Co.
[no value]
Bastian Bros. Co.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0158.xml
advertisement
103
103
[no value]
[no value]
THE FYR-FYTER COMPANY
[no value]
THE FYR-FYTER COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0159.xml
advertisement
104
104
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0160.xml
advertisement
104
104
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0161.xml
advertisement
105
105
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0162.xml
advertisement
106
106
[no value]
[no value]
Simon & Skidmore Mfg. Co.
[no value]
Simon & Skidmore Mfg. Co.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0163.xml
advertisement
106
106
[no value]
[no value]
THE DICTOGRAPH PRODUCTS CORPORATION
[no value]
THE DICTOGRAPH PRODUCTS CORPORATION
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0164.xml
advertisement
107
107
[no value]
[no value]
CONNECTICUT TELEPHONE & ELECTRIC COMPANY
[no value]
CONNECTICUT TELEPHONE & ELECTRIC COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0165.xml
advertisement
107
107
[no value]
[no value]
THE MONARCH MACHINE TOOL CO.
[no value]
THE MONARCH MACHINE TOOL CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0166.xml
advertisement
107
107
[no value]
[no value]
DISAPPEARING PROPELLER BOAT CORPORATION
[no value]
DISAPPEARING PROPELLER BOAT CORPORATION
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0167.xml
advertisement
108
108
[no value]
[no value]
The Rudolph Wurlitzer Co.
[no value]
The Rudolph Wurlitzer Co.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0168.xml
advertisement
108
108
[no value]
[no value]
HAROLD R. WAKEM & CO.
[no value]
HAROLD R. WAKEM & CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0169.xml
advertisement
108
108
[no value]
[no value]
WALNART ELECTRIC MFG. CO.
[no value]
WALNART ELECTRIC MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0170.xml
advertisement
109
109
[no value]
[no value]
EVINRUDE MOTOR COMPANY
[no value]
EVINRUDE MOTOR COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0171.xml
advertisement
109
109
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0172.xml
advertisement
109
109
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0173.xml
advertisement
109
109
[no value]
[no value]
L.W.SWEET INC.
[no value]
L.W.SWEET INC.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0174.xml
advertisement
110
110
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0175.xml
advertisement
111
111
[no value]
[no value]
CLARENCE A. O’BRIEN
[no value]
CLARENCE A. O’BRIEN
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0176.xml
advertisement
112
112
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0177.xml
article
112
112,113,114,115
[no value]
[no value]
Simple Methods for Doing Your Own Cement Work
[no value]
[no value]
[no value]
Franklin S. Keating
HAVE you a garage drive to build, or a garden walk to lay, or concrete steps to patch up, or any cement work to do around your house, garden, and garage? If so, you can save money by doing the work yourself, or, at least, by supervising it intelligently.
PopularScience_19230501_0102_005_0178.xml
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113
113
[no value]
[no value]
VICTOR J. EVANS & CO.
[no value]
VICTOR J. EVANS & CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0179.xml
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114
114
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0180.xml
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114
114
[no value]
[no value]
THE TURNER BRASS WORKS
[no value]
THE TURNER BRASS WORKS
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0181.xml
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115
115
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0182.xml
advertisement
116
116
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0183.xml
advertisement
117
117
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0184.xml
advertisement
118
118
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0185.xml
article
118
118,119,120
[no value]
[no value]
Radio Trouble Tips to Aid You in Building Your Set
Grounding the Filament Circuit
Insuring Good Grid Connections
A Compact, Powerful Radio Set Built around Two Variometers
[no value]
[no value]
Jack Binns
FOR users of honeycomb coils, one of the most important parts of their set is the series-parallel switch. This will be still more important if broadcasting is put on higher wave lengths. Most of the diagrams I have seen for wiring this switch are incorrect, as they usually short circuit the condenser when the switch is in the parallel position.
PopularScience_19230501_0102_005_0186.xml
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119
119
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0187.xml
advertisement
120
120
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0188.xml
advertisement
121
121
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0189.xml
advertisement
121
121
[no value]
[no value]
THE FRANCE MFG. CO.
[no value]
THE FRANCE MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0190.xml
advertisement
121
121
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0191.xml
advertisement
121
121
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0192.xml
article
121
121
[no value]
[no value]
Tuning Inductance Is Controlled
Vernier Condenser for 15 Cents
Dish Serves as Sounding Board
[no value]
[no value]
Concealed Switch
THOSE radio fans who prefer the new fashion of using concealed switch points for their tuning inductance, can make up a simple control as shown. This cost me altogether 30 cents. The switch points are placed in a subpanel, mounted by means of two bolts and two brass spacers behind the main panel.
PopularScience_19230501_0102_005_0193.xml
advertisement
122
122
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0194.xml
article
122
122,123,124
[no value]
[no value]
Small Motor Unit Performs Many Household Tasks
High Speed Egg Beating
Auto Wheels on Harrows Save Trees from Injury
Portable High-Chair Attachment for a Dining Chair
[no value]
[no value]
Joe V. Romig
IF AN efficiency engineer were to walk into your home to-day, would his analysis show that too much of the work is being done by hand? In many cases the housewife or servants are tiring themselves with work that could be done better and far quicker by using motor power.
PopularScience_19230501_0102_005_0195.xml
advertisement
123
123
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0196.xml
advertisement
123
123
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0197.xml
advertisement
123
123
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0198.xml
advertisement
123
123
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0199.xml
advertisement
124
124
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0200.xml
advertisement
124
124
[no value]
[no value]
V-DE-CO RADIO MFG. CO.
[no value]
V-DE-CO RADIO MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0201.xml
advertisement
124
124
[no value]
[no value]
C. G. CONN, Ltd.
[no value]
C. G. CONN, Ltd.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0202.xml
advertisement
124
124
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0203.xml
article
125
125
[no value]
[no value]
The Shipshape Home
How to Do the Odd Jobs
Worm-Eaten Furniture
Choosing Brushes
Regulating Gas Ranges
[no value]
[no value]
[no value]
IN THE spring it is important to watch old furniture or furniture that is stored away, in case the wood beetle infects it. The joints and rough, unpolished parts of worm-eaten furniture should be treated with a preventive such as turpentine, benzine, or kerosene, applied with a brush and allowed to soak in as thoroughly as possible.
PopularScience_19230501_0102_005_0204.xml
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125
125
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0205.xml
advertisement
126
126
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0206.xml
advertisement
126
126
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0207.xml
advertisement
126
126
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0208.xml
advertisement
126
126
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0209.xml
article
126
126,127
[no value]
[no value]
Sanitary Chute Carries Trash from Kitchen to Cellar
[no value]
[no value]
[no value]
William Draper Brinckloe
EVER notice how fast kitchen trash collects? Empty cartons, cans, broken china, wrapping paper—there’s a good sized box of it every day or so. Here’s a suggestion for making a chute to take care of the rubbish in a sanitary way and, at the same time, to save steps and labor.
PopularScience_19230501_0102_005_0210.xml
tableOfContents
127
127
[no value]
[no value]
In This Issue
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0211.xml
advertisement
127
127
[no value]
[no value]
THE FLORSHEIM SHOE COMPANY
[no value]
THE FLORSHEIM SHOE COMPANY
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0212.xml
advertisement
127
127
[no value]
[no value]
BUESCHER BAND INSTRUMENT CO.
[no value]
BUESCHER BAND INSTRUMENT CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0213.xml
advertisement
128
128
[no value]
[no value]
THE ART COLOR PRINTING CO.
[no value]
THE ART COLOR PRINTING CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0214.xml
advertisement
129
129
[no value]
[no value]
The Magnavox Co.
[no value]
The Magnavox Co.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0215.xml
advertisement
130
130
[no value]
[no value]
LIGGETT & MYERS TOBACCO CO.
[no value]
LIGGETT & MYERS TOBACCO CO.
[no value]
[no value]
[no value]
PopularScience_19230501_0102_005_0216.xml