Issue: 19440401

Saturday, April 1, 1944
APR 1944
4
True
144
Monday, December 29, 2014

Articles
cover
0_1
0_1,4
[no value]
[no value]
POPULAR SCIENCE
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0001.xml
advertisement
0_2
0_2
[no value]
[no value]
GENERAL MOTORS
[no value]
GENERAL MOTORS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0002.xml
advertisement
1
1
[no value]
[no value]
The B. F. Goodrich Company: rubber tires
[no value]
The B. F. Goodrich Company
rubber tires
[no value]
[no value]
PopularScience_19440401_0144_004_0003.xml
advertisement
2
2
[no value]
[no value]
Encyclopedia Educational Service
[no value]
Encyclopedia Educational Service
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0004.xml
advertisement
3
3
[no value]
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0005.xml
tableOfContents
4
4
[no value]
[no value]
CONTENTS for APRIL, 1944
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0006.xml
masthead
4
4
[no value]
[no value]
POPULAR SCINENCE
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0007.xml
advertisement
5
5
[no value]
[no value]
THE COMMERCIAL TRAVELERS
[no value]
THE COMMERCIAL TRAVELERS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0008.xml
advertisement
6
6
[no value]
[no value]
CASTLE FILMS INC.
[no value]
CASTLE FILMS INC.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0009.xml
advertisement
7
7
[no value]
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0010.xml
article
8
8
[no value]
[no value]
Coming Next Month
[no value]
[no value]
[no value]
[no value]
TANKERS carry the lifeblood of the United Nations’ bombing offensive—the high-octane gasoline that sends the Lancasters and Fortresses on their devastating raids. Where are we getting these floating fuel tanks? A story and pictures take you through the whole process of building a tanker, from the drawing of the plans to the launching of the ship.
PopularScience_19440401_0144_004_0011.xml
advertisement
8
8
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0012.xml
advertisement
9
9
[no value]
[no value]
Advertisement: BELL TELEPHONE SYSTEM
[no value]
[no value]
BELL TELEPHONE SYSTEM
[no value]
[no value]
PopularScience_19440401_0144_004_0013.xml
advertisement
10
10
[no value]
[no value]
HALDEMAN-JULIUS CO.
[no value]
HALDEMAN-JULIUS CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0014.xml
advertisement
11
11
[no value]
[no value]
NATIONAL RADIO INSTITUTE
[no value]
NATIONAL RADIO INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0015.xml
advertisement
12
12
[no value]
[no value]
The ROSICRUCIANS (AMORC)
[no value]
The ROSICRUCIANS (AMORC)
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0016.xml
advertisement
13
13
[no value]
[no value]
CHARLES ATLAS
[no value]
CHARLES ATLAS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0017.xml
advertisement
14
14
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0018.xml
advertisement
15
15
[no value]
[no value]
CLARENCE A.O'BRIEN & HARVEY B. JACOBSON
[no value]
CLARENCE A.O'BRIEN & HARVEY B. JACOBSON
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0019.xml
article
16
16,18,20
[no value]
[no value]
Readers Say:
Artist Has "One-Man Show" in Readers Say
Wants a Reference Chart of Japanese Insignia
Front Stop Light Has Been Shining Since 1934
Would Like to Put His Hobby into Uniform
Crab Has Man-to-Man Talk with Magazine
Cover-to-Cover Reading Helped Him Win a Scholarship
Suggestions Would Be Gratefully Received
Sorry That We Couldn't Publish It Sooner
P.S.M. Wives—They'll Do It Every Time
Query on How to Bottle-Feed a City Gas Stove
[no value]
[no value]
A. H.
J. S.
E. S. C.
J. L. S.
F. W. R.
Mrs. C. U.
J. D. W.
R. M.
M. A. C.
J. H. N.
I HAVE often admired the drawings and paintings in your magazine. I am sending you a painting of my own, showing an American tank in action. I am 15 years old and I like to paint very much. I would be very happy if you could use my painting in P. S. M.
PopularScience_19440401_0144_004_0020.xml
advertisement
17
17
[no value]
[no value]
FAIRCHILD ENGINE AND AIRPLANE CORPORATION
[no value]
FAIRCHILD ENGINE AND AIRPLANE CORPORATION
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0021.xml
advertisement
18
18
[no value]
[no value]
McMORROW & BERMAN
[no value]
McMORROW & BERMAN
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0022.xml
advertisement
19
19
[no value]
[no value]
LaSalle Extension University
[no value]
LaSalle Extension University
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0023.xml
advertisement
20
20
[no value]
[no value]
HECKETHORN
[no value]
HECKETHORN
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0024.xml
advertisement
21
21
[no value]
[no value]
Advertisement: CAMPION SPARK PLUGS
[no value]
[no value]
CAMPION SPARK PLUGS
[no value]
[no value]
PopularScience_19440401_0144_004_0025.xml
advertisement
22
22
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0026.xml
advertisement
23
23
[no value]
[no value]
Advertisements
[no value]
AUDEL, Publishers
AUDELS AIRCRAFT WORKER
AUDEL, Publishers
AUDELS SHEETMETAL PATTERN LAYOUTS
[no value]
[no value]
PopularScience_19440401_0144_004_0027.xml
advertisement
24
24
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0028.xml
advertisement
25
25
[no value]
[no value]
MoToR Book Dept.
[no value]
MoToR Book Dept.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0029.xml
advertisement
26
26
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0030.xml
advertisement
27
27
[no value]
[no value]
DEFOREST'S TRAINING INC.
[no value]
DEFOREST'S TRAINING INC.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0031.xml
advertisement
28
28
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0032.xml
advertisement
29
29
[no value]
[no value]
Essential Books
[no value]
Essential Books
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0033.xml
advertisement
30
30
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0034.xml
advertisement
31
31
[no value]
[no value]
NATIONAL SCHOOLS
[no value]
NATIONAL SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0035.xml
advertisement
32
32
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0036.xml
advertisement
33
33
[no value]
[no value]
Plastics Industries Technical Institute
[no value]
Plastics Industries Technical Institute
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0037.xml
advertisement
34
34
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0038.xml
advertisement
35
35
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0039.xml
advertisement
36
36
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0040.xml
advertisement
37
37
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0041.xml
advertisement
38
38
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0042.xml
advertisement
39
39
[no value]
[no value]
THE FATE-ROOT-HEATH CO.
[no value]
THE FATE-ROOT-HEATH CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0043.xml
advertisement
39
39
[no value]
[no value]
TRIX CO.
[no value]
TRIX CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0044.xml
advertisement
39
39
[no value]
[no value]
PIONEER PUBLICATIONS, INC.
[no value]
PIONEER PUBLICATIONS, INC.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0045.xml
advertisement
40
40
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0046.xml
advertisement
41
41
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0047.xml
advertisement
42
42
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0048.xml
advertisement
43
43
[no value]
[no value]
G. & C. MERRIAM CO.
[no value]
G. & C. MERRIAM CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0049.xml
advertisement
43
43
[no value]
[no value]
American School
[no value]
American School
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0050.xml
advertisement
43
43
[no value]
[no value]
Jowett institute of Physical Culture
[no value]
Jowett institute of Physical Culture
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0051.xml
advertisement
44
44,45,46,47,48,49,50,51,52,53,54
[no value]
[no value]
Classified Opportunities
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0052.xml
advertisement
55
55
[no value]
[no value]
KNICKERBOCKER PUB. CO.: It's Fun to Draw
[no value]
KNICKERBOCKER PUB. CO.
It's Fun to Draw
[no value]
[no value]
PopularScience_19440401_0144_004_0053.xml
advertisement
56
56
[no value]
[no value]
THE ELECTRIC AUTO-LITE COMPANY: AUTO-LITE SPARK PLUGS
[no value]
THE ELECTRIC AUTO-LITE COMPANY
AUTO-LITE SPARK PLUGS
[no value]
[no value]
PopularScience_19440401_0144_004_0054.xml
article
56A
56A,56B,56C,56D,56E,56F,56G,212,216
News
[no value]
CHASING ECHOES on a Destroyer Escort
Every alarm isn't a U-boat, but the lads who man these new watchdogs of the convoys aren't taking any chances.
Water-Resistant Tape Seals War Shipments
[no value]
[no value]
HICKMAN POWELL
HAROLD KULICK
BOB DENNISTON took his clothes off only to bathe, and once when he got himself well lathered up for a shower, the bellclanging call to battle stations sent him racing to the flying bridge clad largely in soapsuds. I have seen him at 3 a.m.—his necktie neatly tied, of course—running around with one foot bare, because in the dark he had jumped into his roommate’s outsize clodhoppers and lost one in the mad scramble up the ladders.
PopularScience_19440401_0144_004_0055.xml
article
56H
56H
[no value]
[no value]
Artillery Grows Wings . . .
[no value]
[no value]
[no value]
[no value]
How the world's biggest aerial gun is mounted in the North American Mitchell B-25 medium bomber (P.S.M., Feb. '44, p. 105) is shown in this drawing by G. H. Davis from the Illustrated London News. Mounted beside the pilot, with its muzzle protruding from the lower left of the new metal nose section, the 75-millimeter cannon is loaded by a special crew member.
PopularScience_19440401_0144_004_0056.xml
article
57
57,58,59,60,61,198
News
[no value]
Bombing Tokoyo FROM A SILO
Even a veteran combat pilot gets a thrill out of flying a mission in the Air Forces' magic carpet, the Celestial Navigation Trainer.
A LOOK INSIDE THE NAVIGATION AND BOMBING TRAINER
[no value]
[no value]
ROBERT L. SCOTT
THE other day, I took off in a fourengine ship, maneuvered to altitude. Crossing the Atlantic Ocean, Africa, the Arabian Sea, India, Burma, and China, I bombed Japan. After I saw my bombs blast Tokyo, I could have flown on over Kamchatka, along the Aleutians to Alaska, then home to Florida.
PopularScience_19440401_0144_004_0057.xml
article
62
62,63,64,65
News
[no value]
My Beat Was the Battlefield
[no value]
[no value]
[no value]
JOHN (TEX) O'REILLY
THE enemy threat to the Salerno beachhead had been broken. The Fifth Army was beginning to push the Germans slowly back into the mountains. German troops literally had been blasted from Battipaglia by a concentrated bombardment from the air, from the warships offshore, and from land artillery batteries.
PopularScience_19440401_0144_004_0058.xml
article
66
66,67,68,69,70
News
[no value]
Prouing Ground for Props
Newly designed airscrews undergo grueling tests at Wright Field, where delicate instruments show how they will withstand strains encountered in actual flying.
INGENIOUS DEVICES FERRET OUT VIBRATIONS IN THE BLADE AND ITS MOUNTING
HOW WHIRLING BLADES ARE GIVEN THE RAIN TEST
GENERAL ARRANGEMENT OF THE PROPELLER TEST RIGS
MOTOR NO. 1 CAN TAKE THE BIG PROPS OF THE FUTURE
[no value]
[no value]
ALDEN P. ARMAGNC
HOW will a propeller blade of new design behave when it whirls at full speed through the air? Tiny oblong strips of carbon, attached along its length, help answer the important military question in the great propeller-testing laboratory of the Army Air Forces at Wright Field, Dayton, Ohio.
PopularScience_19440401_0144_004_0059.xml
article
71
71
[no value]
[no value]
PLANE NEWS
[no value]
[no value]
[no value]
[no value]
LONGEST RANGE and heaviest bomb load of any naval plane in combat service mark the U. S. Navy’s Boeing Sea Ranger. The mammoth flying boat owes its phenomenally long range to its wing construction, which employs sheet-metal fabrication to incorporate six giant integral fuel tanks.
PopularScience_19440401_0144_004_0060.xml
article
72
72,73,74,75,76,77,78,79,80,200
TO STORM ENEMY SHORES-
[no value]
How We Built Our Invasion Fleet
A $1,000,000,000 armada of thousands of landing craft, ranging from rubber boats to transocean tank carriers, forms the flotillas of victory.
THESE ARE SOME OF THE LANDING CRAFT
NOW BEING USED BY AMERICAN FORCES
THE WRONG WAY TO BEACH A LANDING BOAT
THIS IS HOW IT SHOULD HAVE BEEN DONE
SECRETS OF THE CORVETTE, A HEROINE OF THE BATTLE OF THE ATLANTIC
[no value]
[no value]
ARTHUR GRAHAME
THE building for our Navy in less than two years of a billion-dollar armada of over 25,000 landing craft of unprecedented design, ranging from 16-foot rubber boats to 4,000-ton ocean-crossing tank carriers, ranks high among all-time naval construction achievements.
PopularScience_19440401_0144_004_0061.xml
article
81
81
[no value]
[no value]
Medieval Tools Shape Air Armor
[no value]
[no value]
[no value]
[no value]
ARMOR that was worn by Italian nobles before Columbus discovered America, and the tools with which it was fashioned, are being used today in the design of aviators’ armor. In New York’s Metropolitan Museum of Art, which houses 10,000 items of arms and armor besides the world’s largest collection of armorers’ tools, Steven Grancsay, curator of this branch, heads a secret workshop where models for both head and body armor are made for the Army Ordnance Department.
PopularScience_19440401_0144_004_0062.xml
article
82
82,83,84,204,208
News
[no value]
THE Mars Makes Good
Glenn L. Martin's flying freighter joins the Navy and proves her mettle on a first flight to Hawaii.
[no value]
[no value]
ALFRED H. SINKS
WE DIDN’T come out to Hawaii just for the ride. We wanted to get the feel of the peacetime airways that will circle the globe after the war is won. We wondered what kind of ships will take the long water hops on those future trips. That’s why we jumped at the chance when the Navy offered us permission to take this particular trip.
PopularScience_19440401_0144_004_0063.xml
article
85
85,86,87,88,89,203
News
[no value]
NO Supermen Needed
Flying the new jet plane is as simple as handling a primary trainer, say pilots who have done it
THIS IS THE PRINCIPLE OF HOT-AIR JET PROPULSION
DEVELOPER OF JET ENGINES . . . AND AN EARLY DESIGN
THE IIALIAK3 IKIED II, 100
Your Pin Up
[no value]
[no value]
C. B. COLBY
ANNOUNCEMENT of the Bell jetpropelled plane has set off a train of speculation as to what special training will be required by our pilots before they can handle this new type of aircraft in combat. Jet-propelled aircraft — sometimes erroneously called “rocket planes,” immediately suggest to the layman flametrailing, bulletlike aircraft piloted by supermen specially prepared for this nerve-racking work after months of conditioning and training on the ground.
PopularScience_19440401_0144_004_0064.xml
advertisement
88
88
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0065.xml
article
90
90,91
[no value]
[no value]
TINY BALL BEARINGS SPEED OUR WAR MACHINE
[no value]
[no value]
[no value]
JEAN ACKERMANN
SO TINY that it takes 111,111 to make a pound, miniature precision bearing balls play a vital part in our war machine. Set in flawless steel rings, some of which are hardly larger than a pinhead, they are pivotal parts of such instruments as the pilot’s gyro-horizon (artificial-horizon indicator) and autosyn motors (informers on ailerons and retractable landing gear ); they serve in the compass of a ship and in bombsights.
PopularScience_19440401_0144_004_0066.xml
article
92
92,93
[no value]
[no value]
They Wouldn't Bail Out!
[no value]
[no value]
[no value]
FRANK TINSLEY
The B-17's can dish it out. That's their job. But Boeing's big babies con take it, tool Pitted against the best that Goering and Tojo can throw against them, they have proved repeatedly that fighting American boys and rugged American planes make a combination that is hard to beat!
PopularScience_19440401_0144_004_0067.xml
article
94
94
[no value]
[no value]
SIX-FOOT FURROWS
[no value]
[no value]
[no value]
[no value]
are cut by this giant plow, a seven-ton monster with a share as tall as a man. The world’s largest plow, it was built by Post Brothers, of Santa Ana, Calif., to turn up rich soil that had been covered by two to three feet of sand deposited by a flood.
PopularScience_19440401_0144_004_0068.xml
article
94
94
[no value]
[no value]
RAILS COME UP
[no value]
[no value]
[no value]
[no value]
with-out disturbing near-by brick pavement when jerked by a wrecker developed by boilermakers of the R. G. LeTourneau, Inc., war plant for the Peoria, I11., Junior Chamber of Commerce scrap drive. The “Tournajerk,” operated by one man, has a 60-ton pull and, in removing 15 blocks of tracks, outdistanced a patching crew cementing the openings it left.
PopularScience_19440401_0144_004_0069.xml
article
95
95
[no value]
[no value]
Pinch-Hitting for Rubber
[no value]
[no value]
[no value]
[no value]
SELECTED first in experiments for a substitute when the supply of natural rubber was threatened, a resilient synthetic-resin compound is now being used by the RCA Manufacturing Co. in over 15 war-industry operations. And in nearly every case this new substitute has been found to outlast the original by far.
PopularScience_19440401_0144_004_0070.xml
article
96
96,97
Vega to Lightning..
[no value]
Story of the P-38
[no value]
[no value]
[no value]
[no value]
BACK of the amazing and versatile performance of the P-38 Lockheed Lightning is a long line of famous planes. Although the first Lockheed (built by Allan and Malcolm Loughead) appeared in 1912, the story really goes back only to 1927, when the first of the famous "star" series— the Vega—was born.
PopularScience_19440401_0144_004_0071.xml
article
98
98,99
News
[no value]
Taking the Jumps Out of Army Nerves
[no value]
[no value]
[no value]
[no value]
QUARTERMASTER combat forces at Camp Lee, Va., have a brand-new jitter killer. It’s a 275-foot, shallow trench of horrors through which trainees and officers must crawl at night. This twisting, slimy passage—suddenly alive with sounds and smells that rival the worst war can offer—accustoms men to unexpected happenings and prepares them for situations faced in actual battle.
PopularScience_19440401_0144_004_0072.xml
article
100
100,101
News
[no value]
Aid from the Sky for Marooned Arctic Flyers
EQUIPMENT DROPPED FREE-FALL
EQUIPMENT DROPPED BY PARACHUTE
HOW THE TWO-COLORED PAULIN IS FOLDED TO SEND MESSAGES
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0073.xml
article
102
102
[no value]
[no value]
TOW FOR LONG TOM.
[no value]
[no value]
[no value]
[no value]
A high-speed prime mover for our 155-mm. rifle is provided by the new M-4 tractor, which not only drags the big gun many times faster than the tractor formerly employed but also carries the gun crew and some ammunition. The six-bogie-suspension chassis is the same as that used on the M-4 medium tank and M-7 and M-10 tank destroyers. The tractor mounts a .50 AA machine gun.
PopularScience_19440401_0144_004_0074.xml
article
102
102
[no value]
[no value]
TAMPALA
[no value]
[no value]
[no value]
[no value]
a vegetable enjoyed for centuries in India and China, has been introduced to America by the W. Atlee Burpee Co., of Philadelphia. The plant, which is shown below, grows to about two feet in height and produces tender leaves that can be cut throughout the summer.
PopularScience_19440401_0144_004_0075.xml
article
102
102
[no value]
[no value]
OXYGEN CYLINDERS
[no value]
[no value]
[no value]
[no value]
that will not explode when struck by machine-gun bullets have removed one of the dangers facing high-altitude flyers. A second weld at the seams causes the compressed-gas containers to tear when punctured, as illustrated.
PopularScience_19440401_0144_004_0076.xml
article
103
103
SUBSTITUTE IS MORE RESISTANT TO HEAT
[no value]
SUBSTITUTE RIVALS SHELLAC
CLEARER, COLORLESS
SURFACE IS HARDER
[no value]
[no value]
[no value]
MEETING a scarcity of shellac, which is normally made from imported materials, a substitute has been developed from a waste product of cornstarch and is already being used on planes, ships, and tanks, and in hundreds of special war applications.
PopularScience_19440401_0144_004_0077.xml
article
104
104,105
News
[no value]
DISNEY CARTOONS SPUR COMBAT FLYERS
[no value]
[no value]
[no value]
[no value]
TRULY echoing the fighting spirit of our young Air Forces, the colorful Disney cartoon designs that identify squadrons and groups hide a grim message of hate under a deceptively frivolous appearance. The first identifying insigne for an aircraft squadron, a "Hat in the Ring" motif symbolizing Uncle Sam's joining the Allies—used by Eddie Rickenbacker's 94th Squadron in World War I—was more studiedly patriotic than today's flippant but effective markings.
PopularScience_19440401_0144_004_0078.xml
article
106
106
[no value]
[no value]
Light Gauges Airport Ceiling
[no value]
[no value]
[no value]
[no value]
ACCURATE day or night measurement of cloud ceilings, so important at airports where exact information is required by pilots, is made possible by triangulation with a new photoelectric development. A pulsating beam from a high-pressure mercury arc lamp is directed straight overhead, while a tuned pickup known as a “ceilometer” receives the reflection from the point where the beam encounters cloud formations or other ceiling densities.
PopularScience_19440401_0144_004_0079.xml
article
107
107
[no value]
[no value]
Photos at 300Miles an Hour an Hour
[no value]
[no value]
[no value]
[no value]
ONE of the most important aerial advances of the war is strip photography —a big step forward from the laborious piecing together of a series of reconnaissance shots. The Sonne camera, designed to perform this feat, is much like other aerial cameras in appearance, but it operates without a shutter.
PopularScience_19440401_0144_004_0080.xml
article
108
108,109
[no value]
[no value]
Fangs for the LIBERATOR
[no value]
[no value]
[no value]
[no value]
A JAPANESE manual on aircraft recognition, recently captured, lists the B-24 Consolidated Liberator as a “fourehgined fighter.” Considering the number of Zeros that these far-ranging bombers have knocked down in the last few months, this classification is not so far from the truth.
PopularScience_19440401_0144_004_0081.xml
article
110
110
[no value]
[no value]
Making the Hollow 'Prop'
[no value]
[no value]
[no value]
[no value]
MAINTENANCE and installation of constant-speed propellers have been simplified by unit construction that is now being done with production-line methods. These propellers, used widely by the Army Air Forces, have a new-type hollow steel blade with a longitudinal rib and are designed to hold engine speeds constant and meet variations in load requirements by automatic changes in the angle of the blades.
PopularScience_19440401_0144_004_0082.xml
article
111
111
[no value]
[no value]
BATTLE NOISES HARDEN GUNNER'S NERVES
[no value]
[no value]
[no value]
[no value]
A .50 CALIBER Browning machine-gun mock-up that shoots plastic bullets and trains a student in marksmanship while conditioning him to the distracting sounds of battle has been developed for ground and aerial gunners. As the student manipulates the gun in a 50-foot indoor range and tries to hit moving models of planes, tanks, and men, two loudspeakers directly behind him blast out the ear-splitting noises of combat that jangle a gunner’s nerves.
PopularScience_19440401_0144_004_0083.xml
article
112
112
[no value]
[no value]
Stripped Spit
[no value]
[no value]
[no value]
[no value]
HIT-AND-RUN photo reconnaissance over Germany and the occupied countries is one of the newest uses for the famed Supermarine Spitfire. Stripped of its armament and other surplus weight, this fast RAF plane dashes in and comes back with pictures of Nazi defenses.
PopularScience_19440401_0144_004_0084.xml
article
112
112
[no value]
[no value]
Play Ball!
[no value]
[no value]
[no value]
[no value]
ALL the thrills of real baseball are packed into this game, which may be played by two or more contestants. Flipping a lever, one player pitches the ball toward home plate. An opposing player, by twirling the batter, who swings on a pivot, then tries to knock the ball out of the park.
PopularScience_19440401_0144_004_0085.xml
article
113
113,115,116
THIS IS THE LAST WORD IN FIELD UNIFORMS
[no value]
Can GI Take It?
Brand-new Army clothing is worn to tatters in a proving ground where muddy fields, barbed wire, and brambles show up the physical fitness of our combat dress.
[no value]
[no value]
JACK O'BRINE
OUR Army travels on its stomach—also on its sides, back, elbows, knees, and feet. When a U. S. doughboy goes after the enemy, he goes after him in any posture that suits his purpose. If crawling’s the thing, he crawls; if he must do “land backstrokes” to get under barbed-wire entanglements, he backstrokes; if it takes hiking to reach an objective, he hikes.
PopularScience_19440401_0144_004_0086.xml
article
114
114,115,116
ARMY CLOTHES
[no value]
OBSTACLES ARE DESIGNED TO TEST EVERT PART OF A SOLDIER'S CLOTHING
[no value]
[no value]
[no value]
[no value]
THE CROTCH. To test this part of the trousers, soldiers scale a high wall by stepping on cleats purposely placed at wide intervals so as to strain the seam and fabric. Often two men going over the course together will wear trousers submitted by two different manufacturers.
PopularScience_19440401_0144_004_0087.xml
article
117
117
[no value]
[no value]
SHOES GET "FOREIGN-SOIL" TEST
[no value]
[no value]
[no value]
[no value]
Over a 2,000-foot track that has every type of terrain found in combat zones, including the beachheads of the Pacific (sand) and the lava-covered sections of Italy (slag), a pair of inferior shoes can be quickly tested to death. Other track parts test waterproofing and durability under severe flexing (corduroy)
PopularScience_19440401_0144_004_0088.xml
article
117
117
[no value]
[no value]
GI BOOT IS A BIG STEP FORWARD FROM EARLY SHOE
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0089.xml
article
118
118
[no value]
[no value]
New Tools
[no value]
[no value]
[no value]
[no value]
THIRTY TIMES as fast as previously used power-drilling methods, Boeing’s new “porcupine” die punches 388 riveting holes into Flying Fortress catwalk parts in a single press stroke. Accuracy to 5/10,000 of an inch speeds assembly by insuring absolute alignment of matching parts.
PopularScience_19440401_0144_004_0090.xml
article
119
119
[no value]
[no value]
war ideas
[no value]
[no value]
[no value]
[no value]
FLOATING ON ELBOWS in the wings instead of on separate pontons, this Claude Dornier-designed seaplane does away with the defects of conventional floats. An integral part of the wing, the elbows do not increase air resistance. They have no struts to carry away under stress, and they prevent heavy and sometimes dangerous rocking.
PopularScience_19440401_0144_004_0091.xml
article
120
120,121,122
News
[no value]
Pain-Killers Save Lives
New drugs and simplified techniques bring relief from suffering among both fighters and civilians as science meets the challenge of wartime needs.
AUTOMATIC HYPODERMIC MAKES INJECTIONS FOOLPROOF
[no value]
[no value]
IAGO GALDSTON
PHYSICAL pain is a disrupting force that must be eliminated as far as possible among our fighting men. It is a complex phenomenon whose analysis has taxed the best brains in medicine. We all know that, from an unpleasant sensation, pain may become intolerable.
PopularScience_19440401_0144_004_0092.xml
article
123
123,124,125,126,199
CAN YOU INTERRPRET THIS PICTURE?
[no value]
How to Read Aerial Photos
RECONNAISSANCE SHOTS YIELD TELLTALE CLUES TO TRAINED EYES. TRY YOUR OWN SKILL AT IT —AFTER READING THIS
BEFORE BOMBING
AFTER BOMING
Chemical Coating Gives Protection to Metals
[no value]
[no value]
ALDEN P. ARMAGNAC
TO a layman, many an aerial photograph of a bombing objective resembles an amateur cameraman’s first attempt—and an unfortunate one at that. Looking at the same reconnaissance picture, an Air Intelligence expert sees trenches, machine guns, houses, factories, railroads, and highways.
PopularScience_19440401_0144_004_0093.xml
article
127
127
[no value]
[no value]
new ideas from the inventors
[no value]
[no value]
[no value]
[no value]
GLOWING SEATS and carpets to guide entering moviegoers to empty seats are the suggestion of James H. Owens, Camden, N. J. Sit down and you automatically black out your seat, giving fair warning that it is occupied. Source of the glow would be fluorescent dyes activated by invisible ultraviolet rays blanketing the theater.
PopularScience_19440401_0144_004_0094.xml
article
128
128,129,130,131,200
THIS IS THE ENEMY'S DEADLIEST DEFENSIVE WEAPON
[no value]
HOW AXIS LAND MINES WORK
Sown by millions to slow our advancing troops, they must be removed by experts who know all of their fiendish tricks.
THESE ARE THE TANK-KIILERS
THESE ARE THE MAN-KILLERS
NEW MINE REQUIRES NEW DETECTION METHOD
DETECTORS SPOT THE METAL MINE
SAPPERS MUST PROBE FOR THE NEW MINE
[no value]
[no value]
HAL BORLAND
THE dragon’s teeth of this war are land mines, sometimes rated the most devilish defensive weapons man ever devised. The Axis has used them by the millions—in Africa, on the beaches of Sicily and Italy, in the Pacific island areas. Every land avenue to Hitler’s Inner Fortress is virtually paved with them.
PopularScience_19440401_0144_004_0095.xml
article
132
132,133
[no value]
[no value]
Nazi 75-mm. Paracannon Has No Kick
[no value]
[no value]
[no value]
[no value]
GERMAN armament captured by the Allies reveals that the Nazis are now using a kickless 75-mm. gun that can be dropped by parachute and quickly brought into position in support of advancing infantry. In place of the heavy spring mechanisms or hydraulic cylinders usually employed to cushion recoil in guns of this size, this new weapon has a butt consisting of an open tube through which gases can escape to neutralize the backward push of the exploding powder charge.
PopularScience_19440401_0144_004_0096.xml
article
134
134,135
[no value]
[no value]
Civilians Learn to Drive Cars the Army Way
How Good a Driver Are You?
[no value]
[no value]
JACK O’BRINE
OUR driving habits are in for a healthy change. The Army is shaping them to meet the urgent needs of a force on wheels that can be depended upon to get troops and equipment to the right place at the right time. Good driving is a must for soldiers, and the Army has called on our civilian front to produce more driver material.
PopularScience_19440401_0144_004_0097.xml
article
136
136,137,138
Automobiles
[no value]
Good Valves Give Engines Extra Puncti
THESE HARD-WORKING PARTS TAKE A BEATING EVERY TIME YOU STEP ON THE GAS
[no value]
[no value]
RALPH ROGERS
EVERY time you drive for one hour at 40 m.p.h. in an eight-cylinder car the 16 valves open and close 840,000 times. Your exhaust valves are exposed momentarily to temperatures as high as 3,800 deg. F. and operate normally at cherry-red heat.
PopularScience_19440401_0144_004_0098.xml
article
139
139,140,141
Automobiles
[no value]
Gun Traps an Oil Hog
[no value]
[no value]
[no value]
MARTIN BUNN
GUS WILSON tore three coupons out of the A book handed to him by a worried-looking young fellow behind the wheel of an apparently well-kept sedan that had paused at the Model Garage gas pump. “Well, Al,” he said, “you report at your induction center pretty soon now, don’t you?
PopularScience_19440401_0144_004_0099.xml
article
142
142,143,144
HOME AND WORKSHOP
[no value]
PLAY BAll
A TABLE GAME WITH THE THRILLS OF BIG LEAGUE BASEBALL
RULES
[no value]
[no value]
Carl W. Bertsch
"BATTER UP!” As “Home Run” Joe steps up to the plate, his head cocked toward the pitcher’s box, he takes a few tentative swings with his bat. “Strike Out” Kelly, facing him from the mound, winds up slowly. Then comes the call, “Play Ball!”
PopularScience_19440401_0144_004_0100.xml
article
145
145
[no value]
[no value]
Two-Piece REFRESHMENT SERVER...
LIST OF MATERIALS
[no value]
[no value]
Joseph Aronson
FINISHED with a limed-oak effect, this two-piece refreshment server combines convenience and usefulness with an appearance handsome enough to make it the envy of your guests. When not required as an extra table, the server is designed so that its folding legs can be stored compactly, and its tray placed over the top of the coffee table described on the following page, saving the latter from the effects of hard use.
PopularScience_19440401_0144_004_0101.xml
article
146
146
[no value]
[no value]
Simple COFFEE TABLE Has Smart Modern Lines
[no value]
[no value]
[no value]
JOSEPH ARONSON
NOVELTY and design of real merit are combined in this coffee table that, like the informal serving stand on the preceding page, is given the appearance of limed oak by applying a paste filler to which white pigment has been added. Although the table is intended to be used independently, its top is proportioned so that the tray of the serving stand will fit exactly upon it.
PopularScience_19440401_0144_004_0102.xml
article
147
147
[no value]
[no value]
SIDEWHEELER WEATHER VANE
Breeze Gives Realistic Motion to Its Paddles and Walking Beam
Skate Wheel Forms Vane Mount
[no value]
[no value]
HI SIBLEY
RICHARD VERBRUGGHE
AS THE vessel turns with the wind, the paddle wheels of this steamer supply power enough to cause the walking beam to oscillate in even a moderate breeze. Painted as indicated, the little boat is an effective outdoor ornament. Except for paddle wheels and boxes, walking beam, masts, and capstan, the entire ship is silhouetted in ¾" pine cut from a 10" board.
PopularScience_19440401_0144_004_0103.xml
article
148
148,149,150
Home and Workshop
[no value]
Nature in Miniature
...FOR YOUR MODEL RAILROAD
[no value]
[no value]
CARL W. BERTSCH
MANY a model railroad is a small replica of its big brothers, with rolling stock carefully scaled and conscientiously built—only to travel a roadbed which is laid upon a terrain quite as monotonous and barren as a desert, and far less real.
PopularScience_19440401_0144_004_0104.xml
article
151
151,152,153
HANDMADE DOVETAILS
[no value]
Form Strong Joints
CAN THIS JOINT BE MADE?
How Trick Joint Is Made
[no value]
[no value]
EDWIN M. LOVE
DOVETAIL joints, well known for their strength, have long been used in fine cabinet work. Nowadays they are frequently displaced by other types of joints that are easier to make with power tools, but where a self-locking joint is needed for use without glue, the dovetail is unsurpassed.
PopularScience_19440401_0144_004_0105.xml
article
154
154,155,156
[no value]
[no value]
LOG-CABIN BOOK ENDS FOR RUSTIC SETTINGS
Split Branches Lend Realism to Walls of These Novelties
Homemade Die Embosses Names and Monograms on Stationery
Dowels and Segmented Arches Are Combined in Sturdy Bird Cage
[no value]
[no value]
GRAY WOLF
G. A. BURROWS
ROBERT L. EBY
H. S.
A BREATH of outdoors is brought to the den or study by these rustic book ends. Cut two blocks to the shape shown or glue them up from four thicknesses and a gable piece as indicated by the dotted lines. Make the roofs of thin strips of wood with the grooves cut at a slant; but make the cuts straight into the wood for the gabled ends.
PopularScience_19440401_0144_004_0106.xml
article
157
157
[no value]
[no value]
Two-Toned Frame of Cardboard Is Tailored to Suit Pictures
APRIL CHECK LIST
[no value]
[no value]
C. W. B.
SUITABLE for displaying full-page color pictures such as those that appear in POPULAR SCIENCE MONTHLY, this laminated frame is glued up of five layers of cardboard or matboard, as shown in the exploded drawing below. Note how the two layers next to the back are left open at the top to provide a slot for the insertion of the picture and its protecting glass.
PopularScience_19440401_0144_004_0107.xml
article
158
158,159
[no value]
[no value]
AIDS TO Modern Living
[no value]
[no value]
[no value]
[no value]
CANVAS CAN BE PAINTED with a new chemical coating that is water-repellent and comes in 10 fast colors and black and white. The paint will not crack or stiffen fabrics, can be sprayed or brushed on, and can be employed to refresh fiber rugs, since it is very penetrating and imparts strength and pliancy to any fiber that absorbs it.
PopularScience_19440401_0144_004_0108.xml
article
160
160
[no value]
[no value]
Queen Anne Style STATIONERY BOX
LIST OF MATERIALS
[no value]
[no value]
F. H. G.
MADE of nicely grained ¼" mahogany or other wood, and inlaid with metal initials, this box for stationery can be assembled with precision if it is constructed as a unit and a bandsaw is used to cut apart the lid and the lower portion. In following this procedure, be sure to make grooves in the side panels for the partitions before assembling the box unit.
PopularScience_19440401_0144_004_0109.xml
article
161
161
[no value]
[no value]
OF INTEREST TO HOME OWNERS
[no value]
[no value]
[no value]
[no value]
GLASS SINKS, heat-tempered for strength to resist heavy shocks, have been tested with good results since the first units were installed in 200 apartments of a housing development in Bridgeport, Conn. Modern in design like the one at the right, the new sinks come in black and pastel colors.
PopularScience_19440401_0144_004_0110.xml
article
162
162,163
DISTINCTIVE
[no value]
Colonial Wall Rack
MAKES A DECORATIVE PIECE FOR YOUR LIVING ROOM
LIST OF MATERIALS
[no value]
[no value]
FRANK HEGEMEYER
INTENDED primarily as a decorative piece, this wall rack in the Colonial manner reflects beauty and good taste. Its sturdy construction gives it utility as well, for it may also be used as a hanging bookshelf for small volumes. The warmth and attractiveness of its traditional Early American design are probably best displayed, however, if it is used to hold plates, small figures, and bric-a-brac.
PopularScience_19440401_0144_004_0111.xml
article
164
164,165
[no value]
[no value]
KEEPING THE HOME SHIPSHAPE
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0112.xml
article
166
166,167,168,169
Home and Workshop
[no value]
Cutting a Keyway on the Shaper
Round Work Is Easily Centered for Machining a Stopped Slot
[no value]
[no value]
[no value]
DOUBLING for a slotter or keyseater, the versatile modern power shaper can be used for cutting keyways accurately in round stock if a few precautions are observed to be sure that the work is properly held. It is particularly important that the shaft be so clamped that the center line of the keyway will become the vertical diameter, for otherwise the sides of the slot will be at an angle that will not fit the key.
PopularScience_19440401_0144_004_0113.xml
article
170
170
[no value]
[no value]
Scale-Reading Telescope Aids Shop Precision
[no value]
[no value]
[no value]
ERVIN WALTERS
HALFWAY between a telescope and a microscope, a scale-reading telescope is highly useful in many shop applications involving minute movements or exact distances. The one shown, made of brass scrap and three inexpensive lenses, has a working distance of 3" to 4", measured from the objective (front) lens.
PopularScience_19440401_0144_004_0114.xml
article
171
171
[no value]
[no value]
Four Useful Faceplate Dogs Simplify Many Lathe Setups
[no value]
[no value]
[no value]
C. W. WOODSON
ALTHOUGH largely supplanted by the four-jawed chuck, the faceplate dog is still a valuable accessory in certain faceplate setups where side pressure with accuracy of adjustment is desired. A set of four of these dogs can be easily turned out for use on a small lathe equipped with an 8" faceplate with ⅜" slots, as shown in Fig. 1.
PopularScience_19440401_0144_004_0115.xml
article
171
171
[no value]
[no value]
Broken Lathe Center Salvaged with Part of Old End Mill
[no value]
[no value]
[no value]
H. D. Chapman.
WHEN a lathe center has been broken, as at right, it can be restored to working condition with stock from a discarded end mill. Anneal the center and machine off the old point square with the shank, and in the shank bore a Morse taper to take the stem of the new point.
PopularScience_19440401_0144_004_0116.xml
article
172
172,173
[no value]
[no value]
NEW SHOP IDEAS
THREE-WIRE THREAD MEASUREMENT
[no value]
[no value]
W. E. B.
H. D. CHAPMAN
W. E. B.
R. S. W.
WILLIAM FREEMAN
BLUEPRINT CORRECTIONS can be made in the most legible manner by using a bleaching agent, rather than ink, to write in an omitted dimension. One such agent is a water solution of sodium carbonate—washing soda. Applied with an ordinary pen, it bleaches away the blue color, leaving a highly visible yellowish line.
PopularScience_19440401_0144_004_0117.xml
article
174
174,175,176,177
Home and Workshop
[no value]
Back Lighting
PUTS DRAMA INTO YOUR PICTURES
[no value]
[no value]
Walter E. Burton
COMMON causes of uninteresting photographs, or failure to get a picture at all, are flat lighting and incorrect exposures resulting from attempts to get pictures with some other kind of lighting. In photographic parlance the term “flat lighting” means that most or all of the light illuminating the subject comes from a point approximately in line with and behind the camera.
PopularScience_19440401_0144_004_0118.xml
article
178
178,179
[no value]
[no value]
PHOTO IDEAS
[no value]
[no value]
[no value]
MANLY BANISTER
WILLIAM SWALLOW
LOUIS HOCHMAN
CARL KNUTSEN
W. E. B.
WILLIAM T. CRUNE
THIS COMPACT ENLARGER, built for use in the cramped quarters of a house trailer, is made chiefly from a cigar box, a piece of opal glass, two lengths of plate glass, a cylindrical cardboard container, and an enlarging lens. A 60-watt, 110-volt enlarging bulb in the dome light recessed above the trailer sink forms the light source.
PopularScience_19440401_0144_004_0119.xml
article
180
180,181,182,183
Home and Workshop
[no value]
CYLINDER-LOCK TROUBLES AND WHAT TO DO ABOUT THEM
Sticking Pin-Tumbler Locks Are Easy to Repair If You Know What's Inside Them and Work Carefully
[no value]
[no value]
HAROLD P. STRAND
PIN-TUMBLER cylinder locks have long proved efficient safeguards on outside doors, and on inside ones too when special privacy has been important, and for just as long they have intrigued amateur locksmiths who, for the most part, have been too timid to take a look at what makes them work.
PopularScience_19440401_0144_004_0120.xml
article
184
184,185,186,187
Home and Workshop
[no value]
Oscillators—Tuning Forks of Electronics
HOW TUBES GENERATE HIGH-FREQUENCY CURRENTS THAT SPAN SPACE, HEAT WITHOUT FLAME, AND SMASH ATOMS
[no value]
[no value]
JOHN W. CAMPBELL
ALMOST everyone knows how the electricity of dry cells and household power lines behaves. But the same electrons comprising these currents can, under different circumstances, move in baffling ways. They will be transmitted through insulators and will be insulated by metal wrappings.
PopularScience_19440401_0144_004_0121.xml
article
188
188
[no value]
[no value]
HOW TO STOP APPLIANCE STATIC Servicing Your Radio
[no value]
[no value]
[no value]
[no value]
FEW people realize how much of the static heard on a radio receiver may come from electric appliances in the home. Especially noisy are the older types of appliances, for much of the later equipment is provided with some sort of built-in filter.
PopularScience_19440401_0144_004_0122.xml
article
189
189
[no value]
[no value]
radio ideas
[no value]
[no value]
[no value]
[no value]
SOUND PROJECTION has been so developed that, in tests of one new mobile unit, readings of 68 decibels have been recorded at 3,200'. Other tests have shown it to be efficient within a range of from one to 18 miles. This amplifier is mounted on a twowheeled trailer that can be attached to any kind of car, or pulled by hand, for use at any spot it is needed.
PopularScience_19440401_0144_004_0123.xml
article
190
190,191
[no value]
[no value]
HOME EXPERIMENTS
[no value]
[no value]
[no value]
[no value]
AIR CONDUCTS HEAT POORLY when enclosed in “dead space” so that the heat can’t be transmitted by convection. You can demonstrate this by fluffing a small ball of cotton lightly around the bulb of a thermometer, as at the right above, and holding it a certain distance from a lamp for a definite length of time.
PopularScience_19440401_0144_004_0124.xml
article
192
192,193,194
[no value]
[no value]
IRON
Generously Supplied by Nature, This Vital Element and Its Compounds Play a Tremendous Role in Man's Everyday Life
[no value]
[no value]
LOUIS TEICHMAN
IRON, in its pure, solid state, is rarely found in nature. Its occurrence in meteors indicates that—if the earth is not much different in chemical makeup from the rest of the universe—the center of the earth is composed largely of iron. It is from the earth’s crust, however, that we must obtain the metal, usually in oxide form.
PopularScience_19440401_0144_004_0125.xml
article
195
195
[no value]
[no value]
CHEMISTRY QUIZ
ANSWERS
[no value]
[no value]
[no value]
How much do you know about chemistry? Try to select the correct answers to the questions below, and then turn the page upside down to see how many you got right. 1. Ionization. 4. Reversible. 7. Dry cell. 2. Heat of fusion. 5. Twice fold it double.
PopularScience_19440401_0144_004_0126.xml
article
196
196,197
MOTORIZED
[no value]
Cultivator WEEDS WHILE YOU WALK
Farm-Built Tractor Plow Equipped with Right and Left Shares
[no value]
[no value]
[no value]
PARTS from all sorts of machines went into the construction of this home-built garden cultivator that can be powered either by an electric motor or a small gasoline engine. Steered by hand like any standard push cultivator, the mechanized device will save much hard labor as it moves with a speed of about 1½ m.p.h. through ordinary soils.
PopularScience_19440401_0144_004_0127.xml
advertisement
201
201
[no value]
[no value]
WRIGHT
[no value]
WRIGHT
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0128.xml
advertisement
202
202
[no value]
[no value]
THE HALLICRAFTERS CO.: hallicrafters RADIO
[no value]
THE HALLICRAFTERS CO.
hallicrafters RADIO
[no value]
[no value]
PopularScience_19440401_0144_004_0129.xml
advertisement
204
204
[no value]
[no value]
Advertisement: AC SPARK PLUGS
[no value]
[no value]
AC SPARK PLUGS
[no value]
[no value]
PopularScience_19440401_0144_004_0130.xml
advertisement
205
205
[no value]
[no value]
GENERAL ELECTRIC
[no value]
GENERAL ELECTRIC
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0131.xml
advertisement
206
206
[no value]
[no value]
TYSON BEARING CORPORATION
[no value]
TYSON BEARING CORPORATION
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0132.xml
advertisement
207
207
[no value]
[no value]
HASTINGS MANUFACTURING CO.: HASTINGS STEEL-VENT PISTON PISTON RINGS
[no value]
HASTINGS MANUFACTURING CO.
HASTINGS STEEL-VENT PISTON PISTON RINGS
[no value]
[no value]
PopularScience_19440401_0144_004_0133.xml
advertisement
208
208
[no value]
[no value]
NICHOLSON FILE CO.: NICHOLSON FILES
[no value]
NICHOLSON FILE CO.
NICHOLSON FILES
[no value]
[no value]
PopularScience_19440401_0144_004_0134.xml
advertisement
209
209
[no value]
[no value]
Industrial Tape Corporation: Texcel Tape
[no value]
Industrial Tape Corporation
Texcel Tape
[no value]
[no value]
PopularScience_19440401_0144_004_0135.xml
advertisement
210
210
[no value]
[no value]
GENERAL MOTORS
[no value]
GENERAL MOTORS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0136.xml
advertisement
211
211
[no value]
[no value]
THE ELECTRIC STORAGE BATTERY CO.
[no value]
THE ELECTRIC STORAGE BATTERY CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0137.xml
advertisement
212
212
[no value]
[no value]
Remington
[no value]
Remington
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0138.xml
advertisement
213
213
[no value]
[no value]
National Carbon Company, Inc.: EVEREADY
[no value]
National Carbon Company, Inc.
EVEREADY
[no value]
[no value]
PopularScience_19440401_0144_004_0139.xml
advertisement
214
214
[no value]
[no value]
AAF
[no value]
AAF
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0140.xml
advertisement
215
215
[no value]
[no value]
Indian Motocyde Company
[no value]
Indian Motocyde Company
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0141.xml
advertisement
216
216
[no value]
[no value]
L & H STERN, Inc.
[no value]
L & H STERN, Inc.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0142.xml
advertisement
217
217
[no value]
[no value]
W. L. DOUGLAS SHOE CO.
[no value]
W. L. DOUGLAS SHOE CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0143.xml
advertisement
218
218
[no value]
[no value]
UNIVERSAL CAMERA CORPORATION
[no value]
UNIVERSAL CAMERA CORPORATION
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0144.xml
advertisement
219
219
[no value]
[no value]
HARLEY-DAVIDSON MOTOR CO.
[no value]
HARLEY-DAVIDSON MOTOR CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0145.xml
advertisement
220
220
[no value]
[no value]
THE CARBORUNDUM COMPANY
[no value]
THE CARBORUNDUM COMPANY
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0146.xml
advertisement
220
220
[no value]
[no value]
DU PONT: PRO-TEK
[no value]
DU PONT
PRO-TEK
[no value]
[no value]
PopularScience_19440401_0144_004_0147.xml
advertisement
220
220
[no value]
[no value]
ALBERT CONSTANTINE & SON, INC.
[no value]
ALBERT CONSTANTINE & SON, INC.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0148.xml
advertisement
220
220
[no value]
[no value]
BARRON TOOL CO., INC.: STEEL TOP AUXILIARY DRILL PRESS TABLE
[no value]
BARRON TOOL CO., INC.
STEEL TOP AUXILIARY DRILL PRESS TABLE
[no value]
[no value]
PopularScience_19440401_0144_004_0149.xml
advertisement
221
221
[no value]
[no value]
Curtiss-Wright Corporation
[no value]
Curtiss-Wright Corporation
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0150.xml
advertisement
222
222
[no value]
[no value]
argus INTERNATIONAL INDUSTRIES, INC.
[no value]
argus INTERNATIONAL INDUSTRIES, INC.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0151.xml
advertisement
223
223
[no value]
[no value]
CONSOLIDATED VULTEE
[no value]
CONSOLIDATED VULTEE
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0152.xml
advertisement
224
224
[no value]
[no value]
RUTLAND REPAIR PRODUCTS
[no value]
RUTLAND REPAIR PRODUCTS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0153.xml
advertisement
224
224
[no value]
[no value]
Henry, Leonard & Thomas, Inc.
[no value]
Henry, Leonard & Thomas, Inc.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0154.xml
advertisement
224
224
[no value]
[no value]
GRAYKO, Dept.
[no value]
GRAYKO, Dept.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0155.xml
advertisement
224
224
[no value]
[no value]
Advertisement: DIC-A-DOO PAINT BRUSH BATH
[no value]
[no value]
DIC-A-DOO PAINT BRUSH BATH
[no value]
[no value]
PopularScience_19440401_0144_004_0156.xml
advertisement
225
225
[no value]
[no value]
ELASTIC STOP NUT CORPORATION
[no value]
ELASTIC STOP NUT CORPORATION
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0157.xml
advertisement
226
226
[no value]
[no value]
UNITED STATES PLYWOOD CORPORATION: WELDWOOD PLASTIC RESIN WATERPROOF GLUE
[no value]
UNITED STATES PLYWOOD CORPORATION
WELDWOOD PLASTIC RESIN WATERPROOF GLUE
[no value]
[no value]
PopularScience_19440401_0144_004_0158.xml
advertisement
226
226
[no value]
[no value]
JOHNSON MOTORS
[no value]
JOHNSON MOTORS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0159.xml
advertisement
227
227
[no value]
[no value]
Mid-States Equipment Co.
[no value]
Mid-States Equipment Co.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0160.xml
advertisement
228
228
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0161.xml
advertisement
228
228
[no value]
[no value]
Blatz Berwing Co.: Blatz Beer
[no value]
Blatz Berwing Co.
Blatz Beer
[no value]
[no value]
PopularScience_19440401_0144_004_0162.xml
advertisement
229
229
[no value]
[no value]
Advertisements
[no value]
J. H. WILLIAMS & CO.
WILLIAMS' SPRING CUTTING-OFF HOLDER
J. H. WILLIAMS & CO.
WILLIAMS' CUTTING-OFF & SIDE-TOOL HOLDER
[no value]
[no value]
PopularScience_19440401_0144_004_0163.xml
advertisement
230
230
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0164.xml
advertisement
231
231
[no value]
[no value]
EVINRUDE OUTBOARD MOTORS
[no value]
EVINRUDE OUTBOARD MOTORS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0165.xml
advertisement
232
232
[no value]
[no value]
HENRY DISSTON & SONS, INC.
[no value]
HENRY DISSTON & SONS, INC.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0166.xml
advertisement
232
232
[no value]
[no value]
CUSHMAN MOTOR WORKS: Cushman AUTO-GLIDE
[no value]
CUSHMAN MOTOR WORKS
Cushman AUTO-GLIDE
[no value]
[no value]
PopularScience_19440401_0144_004_0167.xml
advertisement
232
232
[no value]
[no value]
KATO ENGINEERING CO.
[no value]
KATO ENGINEERING CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0168.xml
advertisement
232
232
[no value]
[no value]
SHELDON MACHINE CO., Inc.
[no value]
SHELDON MACHINE CO., Inc.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0169.xml
advertisement
233
233
[no value]
[no value]
THE DELTA MFG. CO.
[no value]
THE DELTA MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0170.xml
advertisement
234
234
[no value]
[no value]
CHRISTY SUPPLY CO.
[no value]
CHRISTY SUPPLY CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0171.xml
advertisement
234
234
[no value]
[no value]
THE AMERICAN PAD AND TEXTILE COMPANY: TA•PAT•CO SLEEPING BAG
[no value]
THE AMERICAN PAD AND TEXTILE COMPANY
TA•PAT•CO SLEEPING BAG
[no value]
[no value]
PopularScience_19440401_0144_004_0172.xml
advertisement
234
234
[no value]
[no value]
The Best Foods, Inc.: SHINOLA
[no value]
The Best Foods, Inc.
SHINOLA
[no value]
[no value]
PopularScience_19440401_0144_004_0173.xml
advertisement
235
235
[no value]
[no value]
Advertisements
[no value]
PLUMB
HAMMERS
PLUMB
HATCHETS
[no value]
[no value]
PopularScience_19440401_0144_004_0174.xml
advertisement
236
236
[no value]
[no value]
MARXMAN: Mel-O
[no value]
MARXMAN
Mel-O
[no value]
[no value]
PopularScience_19440401_0144_004_0175.xml
advertisement
236
236
[no value]
[no value]
BELL WATCH COMPANY
[no value]
BELL WATCH COMPANY
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0176.xml
advertisement
236
236
[no value]
[no value]
Advertisements
[no value]
INTERNATIONAL MODEL,
20 CARBON DRILL SET
INTERNATIONAL MODEL,
60 CARBON DRILL SET
[no value]
[no value]
PopularScience_19440401_0144_004_0177.xml
advertisement
236
236
[no value]
[no value]
Hobart Bros. Co.: HOBART "Simplified" ARC WELDERS
[no value]
Hobart Bros. Co.
HOBART "Simplified" ARC WELDERS
[no value]
[no value]
PopularScience_19440401_0144_004_0178.xml
advertisement
237
237
[no value]
[no value]
POPULAR SCIENCE PUBLISHING CO.
[no value]
POPULAR SCIENCE PUBLISHING CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0179.xml
advertisement
238
238
[no value]
[no value]
Advertisements
[no value]
Cleveland Model & Supply Co.
Grumman "AVENGER"
Cleveland Model & Supply Co.
Lockheed P-38 "LIGHTNING"
[no value]
[no value]
PopularScience_19440401_0144_004_0180.xml
advertisement
238
238
[no value]
[no value]
FOLEY MANUFACTURING CO.
[no value]
FOLEY MANUFACTURING CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0181.xml
advertisement
238
238
[no value]
[no value]
DU PONT: DUCO CEMENT
[no value]
DU PONT
DUCO CEMENT
[no value]
[no value]
PopularScience_19440401_0144_004_0182.xml
advertisement
238
238
[no value]
[no value]
THE JACOBS MFG. COMPANY
[no value]
THE JACOBS MFG. COMPANY
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0183.xml
advertisement
239
239
[no value]
[no value]
DEFOE SHIPBUILDING COMPANY
[no value]
DEFOE SHIPBUILDING COMPANY
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0184.xml
advertisement
240
240
[no value]
[no value]
Advertisement: Popular Science
[no value]
[no value]
Popular Science
[no value]
[no value]
PopularScience_19440401_0144_004_0185.xml
advertisement
240
240
[no value]
[no value]
Advertisement: MEDICO
[no value]
[no value]
MEDICO
[no value]
[no value]
PopularScience_19440401_0144_004_0186.xml
advertisement
241
241
[no value]
[no value]
The Duro Metal Products Co.: DURO TOOLS
[no value]
The Duro Metal Products Co.
DURO TOOLS
[no value]
[no value]
PopularScience_19440401_0144_004_0187.xml
advertisement
241
241
[no value]
[no value]
EDMUND SALVAGE CO.
[no value]
EDMUND SALVAGE CO.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0188.xml
advertisement
241
241
[no value]
[no value]
Advertisement: AC FUEL PUMPS
[no value]
[no value]
AC FUEL PUMPS
[no value]
[no value]
PopularScience_19440401_0144_004_0189.xml
advertisement
242
242
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0190.xml
advertisement
243
243
[no value]
[no value]
Hillerich & Bradsby Co.
[no value]
Hillerich & Bradsby Co.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0191.xml
advertisement
243
243
[no value]
[no value]
Vogue Eliminator Co.
[no value]
Vogue Eliminator Co.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0192.xml
advertisement
243
243
[no value]
[no value]
ONAN
[no value]
ONAN
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0193.xml
advertisement
243
243
[no value]
[no value]
SNAP-ON TOOLS CORPORATION
[no value]
SNAP-ON TOOLS CORPORATION
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0194.xml
advertisement
244
244
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0195.xml
advertisement
245
245
[no value]
[no value]
STERLING TOOL PRODUCTS COMPANY
[no value]
STERLING TOOL PRODUCTS COMPANY
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0196.xml
advertisement
245
245
[no value]
[no value]
ALLIED RADIO CORP.
[no value]
ALLIED RADIO CORP.
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0197.xml
advertisement
245
245
[no value]
[no value]
ATLAS PRESS
[no value]
ATLAS PRESS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0198.xml
advertisement
246
246
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0199.xml
advertisement
247
247
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0200.xml
advertisement
248
248
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0201.xml
advertisement
249
249
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0202.xml
advertisement
250
250
[no value]
[no value]
SOUTH BEND LATHE WORKS
[no value]
SOUTH BEND LATHE WORKS
[no value]
[no value]
[no value]
PopularScience_19440401_0144_004_0203.xml