Issue: 19490501

Sunday, May 1, 1949
May 1949
5
True
154
Friday, December 12, 2014

Articles
cover
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0_1,107
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POPULAR SCIENCE
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PopularScience_19490501_0154_005_0001.xml
advertisement
0_2
0_2
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WHIZZER MOTOR CO.: WHIZZER 'Pacemaker'
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WHIZZER MOTOR CO.
WHIZZER 'Pacemaker'
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PopularScience_19490501_0154_005_0002.xml
advertisement
1
1
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The Westport Publishing Company
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The Westport Publishing Company
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PopularScience_19490501_0154_005_0003.xml
masthead
2
2
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POPULAR SCIENCE
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PopularScience_19490501_0154_005_0004.xml
tableOfContents
2
2,4
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TABLE OF CONTENTS
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PopularScience_19490501_0154_005_0005.xml
advertisement
3
3
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MURRAY HILL BOOKS. Inc.
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MURRAY HILL BOOKS. Inc.
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PopularScience_19490501_0154_005_0006.xml
advertisement
4
4
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JOHNSON MOTORS
[no value]
JOHNSON MOTORS
[no value]
[no value]
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PopularScience_19490501_0154_005_0007.xml
advertisement
5
5
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INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
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PopularScience_19490501_0154_005_0008.xml
advertisement
6
6
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NORTHROP AERONAUTICAL INSTITUTE
[no value]
NORTHROP AERONAUTICAL INSTITUTE
[no value]
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PopularScience_19490501_0154_005_0009.xml
article
6
6,8,10,12
Letters
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Letters
Pardon, Your Tractor's Showing
Jeep Turns Corners
Rubber Nozzle Stops Static
A Few Kind Words
Flap Keeps PS Fresh
Doubting Thomas
Sports-Car Speedster
Battle of the Train Light
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Sir: A picture on page 183 of your February issue shows an International Diesel TD-6 being loaded on a truck by the aid of the vanishing ramp (a wonderful idea). You state that this tractor weighs nearly 18 tons, but a check on the TD-6 shows its weight to be approximately 7,300 lb.—a long way from 18 tons.
PopularScience_19490501_0154_005_0010.xml
advertisement
7
7
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AUDEL, Publishers
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AUDEL, Publishers
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PopularScience_19490501_0154_005_0011.xml
advertisement
8
8
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The ROSICRUCIANS
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The ROSICRUCIANS
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PopularScience_19490501_0154_005_0012.xml
advertisement
9
9
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LASALLE EXTENSION UNIVERSITY
[no value]
LASALLE EXTENSION UNIVERSITY
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PopularScience_19490501_0154_005_0013.xml
advertisement
10
10
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Dean of Enrollments
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Dean of Enrollments
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PopularScience_19490501_0154_005_0014.xml
advertisement
11
11
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National Radio institute
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National Radio institute
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PopularScience_19490501_0154_005_0015.xml
advertisement
12
12
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FOLEY MFG. CO.
[no value]
FOLEY MFG. CO.
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PopularScience_19490501_0154_005_0016.xml
advertisement
13
13
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DeFOREST'S TRAINING, INC.
[no value]
DeFOREST'S TRAINING, INC.
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PopularScience_19490501_0154_005_0017.xml
advertisement
14
14
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Advertisements
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PopularScience_19490501_0154_005_0018.xml
advertisement
15
15
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CLARENCE A. O'BRIEN & HARVEY JACOBSON
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CLARENCE A. O'BRIEN & HARVEY JACOBSON
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PopularScience_19490501_0154_005_0019.xml
advertisement
16
16
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Advertisements
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PopularScience_19490501_0154_005_0020.xml
advertisement
17
17
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McMORROW, BERMAN & DAVIDSON
[no value]
McMORROW, BERMAN & DAVIDSON
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PopularScience_19490501_0154_005_0021.xml
advertisement
18
18
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Advertisements
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PopularScience_19490501_0154_005_0022.xml
advertisement
19
19
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VICTOR J. EVANS & CO.
[no value]
VICTOR J. EVANS & CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0023.xml
advertisement
20
20
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Advertisements
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PopularScience_19490501_0154_005_0024.xml
advertisement
21
21
[no value]
[no value]
MoToR Book
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MoToR Book
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[no value]
PopularScience_19490501_0154_005_0025.xml
advertisement
22
22
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Advertisements
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PopularScience_19490501_0154_005_0026.xml
advertisement
23
23
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COYNE ELECTRICAL AND RADIO SCHOOL
[no value]
COYNE ELECTRICAL AND RADIO SCHOOL
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0027.xml
advertisement
24
24
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Advertisements
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PopularScience_19490501_0154_005_0028.xml
advertisement
25
25
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[no value]
Warner Electric Co.
[no value]
Warner Electric Co.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0029.xml
advertisement
26
26
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Advertisements
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PopularScience_19490501_0154_005_0030.xml
advertisement
27
27
[no value]
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NATIONAL SCHOOLS
[no value]
NATIONAL SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0031.xml
advertisement
28
28
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Advertisements
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PopularScience_19490501_0154_005_0032.xml
advertisement
29
29
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INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
[no value]
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PopularScience_19490501_0154_005_0033.xml
advertisement
30
30
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Advertisements
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PopularScience_19490501_0154_005_0034.xml
advertisement
31
31
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WYPE CORP.
[no value]
WYPE CORP.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0035.xml
advertisement
32
32
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Advertisements
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PopularScience_19490501_0154_005_0036.xml
advertisement
33
33
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NATIONAL SCHOOLS
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NATIONAL SCHOOLS
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[no value]
[no value]
PopularScience_19490501_0154_005_0037.xml
advertisement
34
34
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Advertisements
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PopularScience_19490501_0154_005_0038.xml
advertisement
35
35
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Advertisements
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PopularScience_19490501_0154_005_0039.xml
advertisement
36
36
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Advertisements
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PopularScience_19490501_0154_005_0040.xml
advertisement
37
37
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Advertisements
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PopularScience_19490501_0154_005_0041.xml
advertisement
38
38
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Advertisements
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PopularScience_19490501_0154_005_0042.xml
advertisement
39
39
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Advertisements
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PopularScience_19490501_0154_005_0043.xml
advertisement
40
40
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Advertisements
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PopularScience_19490501_0154_005_0044.xml
advertisement
41
41
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Advertisements
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PopularScience_19490501_0154_005_0045.xml
advertisement
42
42
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Advertisements
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PopularScience_19490501_0154_005_0046.xml
advertisement
43
43
[no value]
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Advertisements
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PopularScience_19490501_0154_005_0047.xml
advertisement
44
44
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Advertisements
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PopularScience_19490501_0154_005_0048.xml
advertisement
45
45
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Advertisements
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PopularScience_19490501_0154_005_0049.xml
advertisement
46
46
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Advertisements
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PopularScience_19490501_0154_005_0050.xml
advertisement
47
47
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MARYLAND DISTRIBUTORS
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MARYLAND DISTRIBUTORS
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[no value]
[no value]
PopularScience_19490501_0154_005_0051.xml
advertisement
47
47
[no value]
[no value]
Stars and Stripes Fireworks Co.
[no value]
Stars and Stripes Fireworks Co.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0052.xml
advertisement
47
47
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AUDEL, Publishers: AUDELS Carpenters and Builders Guides
[no value]
AUDEL, Publishers
AUDELS Carpenters and Builders Guides
[no value]
[no value]
PopularScience_19490501_0154_005_0053.xml
advertisement
48
48
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Advertisements
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PopularScience_19490501_0154_005_0054.xml
advertisement
49
49
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Advertisements
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PopularScience_19490501_0154_005_0055.xml
advertisement
50
50
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Advertisements
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PopularScience_19490501_0154_005_0056.xml
advertisement
51
51
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COMMERCIAL TRADES INSTITUTE
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COMMERCIAL TRADES INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0057.xml
advertisement
51
51
[no value]
[no value]
NATIONAL JOBBING CO.: ARMY SLEEPING BAG
[no value]
NATIONAL JOBBING CO.
ARMY SLEEPING BAG
[no value]
[no value]
PopularScience_19490501_0154_005_0058.xml
advertisement
51
51
[no value]
[no value]
CHICAGO GOGGLE SALES CO.: SUN GLASSES
[no value]
CHICAGO GOGGLE SALES CO.
SUN GLASSES
[no value]
[no value]
PopularScience_19490501_0154_005_0059.xml
advertisement
52
52
[no value]
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Advertisements
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PopularScience_19490501_0154_005_0060.xml
advertisement
53
53
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Advertisements
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PopularScience_19490501_0154_005_0061.xml
advertisement
54
54
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Advertisements
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PopularScience_19490501_0154_005_0062.xml
advertisement
55
55
[no value]
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Advertisements
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PopularScience_19490501_0154_005_0063.xml
advertisement
56
56
[no value]
[no value]
Advertisements
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[no value]
[no value]
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PopularScience_19490501_0154_005_0064.xml
advertisement
57
57
[no value]
[no value]
CHICAGO TECHNICAL COLLEGE
[no value]
CHICAGO TECHNICAL COLLEGE
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0065.xml
advertisement
57
57
[no value]
[no value]
THE FATE-ROOT-HEATH CO.
[no value]
THE FATE-ROOT-HEATH CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0066.xml
advertisement
57
57
[no value]
[no value]
Edmund Salvage Company: GOVERNMENT'S 7×50 BINOCULARS
[no value]
Edmund Salvage Company
GOVERNMENT'S 7×50 BINOCULARS
[no value]
[no value]
PopularScience_19490501_0154_005_0067.xml
advertisement
58
58
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
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[no value]
PopularScience_19490501_0154_005_0068.xml
advertisement
59
59
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0069.xml
advertisement
60
60
[no value]
[no value]
Beltone Hearing Aid Co.
[no value]
Beltone Hearing Aid Co.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0070.xml
advertisement
60
60
[no value]
[no value]
STANDARD
[no value]
STANDARD
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0071.xml
advertisement
60
60
[no value]
[no value]
TIP-TOP PRODUCTS: TIP-TOP Liquid Solder
[no value]
TIP-TOP PRODUCTS
TIP-TOP Liquid Solder
[no value]
[no value]
PopularScience_19490501_0154_005_0072.xml
advertisement
60
60
[no value]
[no value]
Advertisement: POPULAR SCIENCE
[no value]
[no value]
POPULAR SCIENCE
[no value]
[no value]
PopularScience_19490501_0154_005_0073.xml
advertisement
61
61
[no value]
[no value]
KIKTAVI COMPANY
[no value]
KIKTAVI COMPANY
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0074.xml
advertisement
61
61
[no value]
[no value]
Advertisements
[no value]
UNIVERSAL ENTERPRISES
MECHANICS TROUBLE LAMPS
UNIVERSAL ENTERPRISES
WOOL BLANKETS
[no value]
[no value]
PopularScience_19490501_0154_005_0075.xml
advertisement
61
61
[no value]
[no value]
AMERICAN FLOOR SURFACING MACHINE CO.
[no value]
AMERICAN FLOOR SURFACING MACHINE CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0076.xml
advertisement
62
62
[no value]
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Advertisements
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PopularScience_19490501_0154_005_0077.xml
advertisement
63
63
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Advertisements
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PopularScience_19490501_0154_005_0078.xml
advertisement
64
64
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Advertisements
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[no value]
PopularScience_19490501_0154_005_0079.xml
advertisement
65
65
[no value]
[no value]
RICH CHILD CYCLE CO., INC.: BSA BANTAM 125
[no value]
RICH CHILD CYCLE CO., INC.
BSA BANTAM 125
[no value]
[no value]
PopularScience_19490501_0154_005_0080.xml
advertisement
65
65
[no value]
[no value]
NATIONAL TRADE SCHOOL
[no value]
NATIONAL TRADE SCHOOL
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0081.xml
advertisement
65
65
[no value]
[no value]
Advertisements
[no value]
U. A. S. Corp.
HEAVY DUTY STEEL PIANO HINGE
U. A. S. Corp.
LIVE RUBBER SHOCK CORD
[no value]
[no value]
PopularScience_19490501_0154_005_0082.xml
advertisement
66
66
[no value]
[no value]
PALLEY SUPPLY CO.
[no value]
PALLEY SUPPLY CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0083.xml
advertisement
67
67,68,69,70,71,72,73,74,75,76,77,78,79,80
[no value]
[no value]
Classified Opportunities
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0084.xml
advertisement
89
89
[no value]
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Advertisements
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PopularScience_19490501_0154_005_0085.xml
advertisement
90
90
[no value]
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Advertisements
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[no value]
[no value]
[no value]
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PopularScience_19490501_0154_005_0086.xml
advertisement
91
91
[no value]
[no value]
U. S. School of Music
[no value]
U. S. School of Music
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0087.xml
advertisement
91
91
[no value]
[no value]
METALLIC LETTER COMPANY
[no value]
METALLIC LETTER COMPANY
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0088.xml
advertisement
91
91
[no value]
[no value]
RAYE BURNS SCHOOL
[no value]
RAYE BURNS SCHOOL
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0089.xml
advertisement
91
91
[no value]
[no value]
CAPITOL RADIO ENGINEERING INSTITUTE
[no value]
CAPITOL RADIO ENGINEERING INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0090.xml
advertisement
92
92
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Advertisements
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PopularScience_19490501_0154_005_0091.xml
advertisement
93
93
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Advertisements
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PopularScience_19490501_0154_005_0092.xml
advertisement
94
94
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PopularScience_19490501_0154_005_0093.xml
advertisement
95
95
[no value]
[no value]
Advertisements
[no value]
The Coleman Company, Inc.
Coleman Folding CAMP STOVE
The Coleman Company, Inc.
Coleman Floodlight LANTERN
[no value]
[no value]
PopularScience_19490501_0154_005_0094.xml
advertisement
95
95
[no value]
[no value]
MAXILUME CO.
[no value]
MAXILUME CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0095.xml
advertisement
95
95
[no value]
[no value]
Old Town Canoe Company: Sturdy Sailor
[no value]
Old Town Canoe Company
Sturdy Sailor
[no value]
[no value]
PopularScience_19490501_0154_005_0096.xml
advertisement
96
96
[no value]
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Advertisements
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[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0097.xml
advertisement
97
97
[no value]
[no value]
MARTIN MOTORS
[no value]
MARTIN MOTORS
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0098.xml
advertisement
97
97
[no value]
[no value]
MODERN MFG. CO.: MODERN LAWN MOWER SHARPENER
[no value]
MODERN MFG. CO.
MODERN LAWN MOWER SHARPENER
[no value]
[no value]
PopularScience_19490501_0154_005_0099.xml
advertisement
97
97
[no value]
[no value]
Advertisement: SmithCorona
[no value]
[no value]
SmithCorona
[no value]
[no value]
PopularScience_19490501_0154_005_0100.xml
advertisement
98
98
[no value]
[no value]
CASCO PRODUCTS CORPORATION: VIS-O-LITE
[no value]
CASCO PRODUCTS CORPORATION
VIS-O-LITE
[no value]
[no value]
PopularScience_19490501_0154_005_0101.xml
article
98
98,100
I'd like to see them make
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I'd like to see them make
[no value]
[no value]
[no value]
[no value]
Globes with mountains and oceans shown in relief. The scale would have to be exaggerated. Maybe the globes could be molded of plastic, with land and sea in different colors.-James Froberg, Palma Sola, Fla. Coal bins with slanted floors.
PopularScience_19490501_0154_005_0102.xml
advertisement
99
99
[no value]
[no value]
Advertisements
[no value]
U.S.ARMY
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0103.xml
advertisement
100
100
[no value]
[no value]
Advertisements
[no value]
PYROIL COMPANY
Aircraft Pyroil B
PYROIL COMPANY
Aircraft Pyroil A
[no value]
[no value]
PopularScience_19490501_0154_005_0104.xml
advertisement
101
101
[no value]
[no value]
THE MARLIN FIREARMS CO.: MARLIN Model 88c
[no value]
THE MARLIN FIREARMS CO.
MARLIN Model 88c
[no value]
[no value]
PopularScience_19490501_0154_005_0105.xml
advertisement
102
102
[no value]
[no value]
RADIO CORPORATION of AMERICA: Madame X
[no value]
RADIO CORPORATION of AMERICA
Madame X
[no value]
[no value]
PopularScience_19490501_0154_005_0106.xml
article
103
103
PS The Voice of Science
[no value]
A Professor Belittles the Bomb
[no value]
[no value]
[no value]
[no value]
IT is only human to let out that whistling sigh when your long-circling airplane comes out of the white stuff right on the runway; when your disabled car bumps safely off the pavement. Whenever fear lets go of your guts there is a tendency to say, “That wasn’t so bad . . .”
PopularScience_19490501_0154_005_0107.xml
advertisement
104
104
[no value]
[no value]
Advertisements
[no value]
The National Joy Smoke
Pipe Appeal
[no value]
[no value]
PopularScience_19490501_0154_005_0108.xml
article
105
105
Science News
[no value]
Pipes for Purity...
[no value]
[no value]
[no value]
[no value]
Exceptionally pure chemicals come out of these silvery pipes in the National Bureau of Standards. The two-story-high pipes are automatic distillation columns that boil night and day to separate the compounds of petroleum. Each of these compounds boils at a slightly different temperature, so any one can be separated from most of the others by heating the mixture to just the right boiling point.
PopularScience_19490501_0154_005_0109.xml
article
106
106,107,108,109,110,111,112
PS Features
[no value]
Is U.S. Building a New Moon?
One rocket has already pierced the earth’s atmosphere; a faster one might leave it and circle forever.
Two-Step Rocket Tried
Choose Your Orbit
Would Aid Solar Research
Navigating by Orbiter
[no value]
[no value]
Willy Ley
SUCH revelations made POPULAR SCIENCE editors ask: Is the United States now building a new moon? No hints as clear as some of these preceded the first A-bomb’s shock wave. Space ships, defense officials now say, are “a matter of highest secrecy.”
PopularScience_19490501_0154_005_0110.xml
article
113
113
New Products
[no value]
Rifle Safety Can't Forget
[no value]
[no value]
[no value]
[no value]
HERE'S a rifle that you can't load without automatically locking a fool-proof safety device. It is a new .22-caliber, single-shot, bolt-action Winchester (right) designed especially for young and inexperienced shooters. The very act of loading, pulling back the bolt handle, makes it impossible to fire the rifie.
PopularScience_19490501_0154_005_0111.xml
article
113
113
Science at Work
[no value]
Parajumpers Carry Own Te1etypewriter
[no value]
[no value]
[no value]
[no value]
A LIGHTWEIGHT portable teletypewriter, weighing only 45 pounds, is the Signal Corps' answer to front-line communications problems. It can operate on both wire and radio circuits, sending and receiving 66 percent faster than older types.
PopularScience_19490501_0154_005_0112.xml
article
114
114,115
Inventions
[no value]
New Ideas from the Inventors
[no value]
[no value]
[no value]
[no value]
Spoilers Smooth Landings. If you came down in this plane, you’d stay down. “Spoiler” vanes on top of the wings are automatically raised just as the plane lands, cutting its lift and keeping it from “bouncing.” The spoilers are actuated by the movement of the shock absorbers as the wheels strike the ground.
PopularScience_19490501_0154_005_0113.xml
article
116
116
Science at Work
[no value]
Swift Kick for Missiles
[no value]
[no value]
[no value]
[no value]
THE Navy’s newest booster rocket, with a speed of more than 1,500 m.p.h., will get supersonic missiles off to a good start. It is designed especially for launching ramjet missiles that must reach near-supersonic velocity before they can operate efficiently.
PopularScience_19490501_0154_005_0114.xml
article
116
116
Science at Work
[no value]
Secret Weapon Previewed
[no value]
[no value]
[no value]
[no value]
SHOWN above, posing on its way for delivery to the U. S. Navy, is the Lark, latest weapon of push-button warfare. It is a ship-to-air, rocket-powered guided missile, controlled automatically in flight. That is all the Navy will say about the new weapon, intended to knock targets out of the air, except that it has been designated the XSAM-N-2.
PopularScience_19490501_0154_005_0115.xml
article
117
117
Science News
[no value]
How Raindrop Really Looks
[no value]
[no value]
[no value]
[no value]
WHEN you're caught in a shower, do you picture yourself getting splashed by tear-shaped raindrops like those sketched at left? Contrary to popular belief, raindrops are not tear-shaped—nor would tears be, if they fell far. For a good look at a raindrop, General Electric scientists released water from a medicine dropper into a rising air stream that carried a drop, "falling" naturally in air, slowly upward past a high-speed multiple-exposure camera.
PopularScience_19490501_0154_005_0116.xml
article
118
118,119,120
PS Features
[no value]
Homemade Gadgets Mechanize chicken Farm
[no value]
[no value]
[no value]
[no value]
THEY laughed when Charley Nassivera began monkeying with worn-out clocks, discarded automobile radiators, and spare wagon wheels to mechanize his chicken farm. But Charley has the last laugh. Charley, who lives near Glens Falls, N. Y., got plumb tired of all the work that it took to scald a chicken, pick it, and singe it to get it ready for the consumer.
PopularScience_19490501_0154_005_0117.xml
article
121
121,122,123
PS Features
[no value]
New Cruiser Packs 8-Inch Automatics
[no value]
[no value]
[no value]
[no value]
AUTOMATIC eight-inch guns, first of this large caliber to be perfected, quadruple the fire power of the U.S. Navy's new 17,000-ton cruisers. They make the U.S.S. Des Moines, completed last November, and her sister ships Salem and Newport News, due to join the fleet this spring, the most powerful warships of their class afloat.
PopularScience_19490501_0154_005_0118.xml
article
124
124,125,126
PS Features
[no value]
So A-Bombs Aren't So Bad?
Two debunking books have started a lively and important argument in scientific and military circles•
[no value]
[no value]
[no value]
P. M. S. BLACKETT, a Nobel prize winner in physics, thinks Americans have exaggerated the A-bomb's importance. R. E. Lapp, a Manhattan Project physicist, fears that people are hiding from the facts. Prof. Blackett defends the Russians’ attitude toward the bomb; Dr. Lapp is mainly concerned about America’s security.
PopularScience_19490501_0154_005_0119.xml
article
127
127
PS Features
[no value]
Projector Checks Threads
[no value]
[no value]
[no value]
[no value]
THE saw-toothed image on the circular screen above is a magnified projection of threading on a steel rod. The projector is used by U. S. Steel to spot defects that would weaken links between the sucker rods that actuate pumps at the bottom of oil wells.
PopularScience_19490501_0154_005_0120.xml
article
127
127
Science at Work
[no value]
Water Tap Weighs 100 Tons
[no value]
[no value]
[no value]
[no value]
THIS 47½-ft. structure is one of 16 slide gates that will control the flow of water through Bull Shoals Dam in Arkansas. Hydraulic pistons at the top raise and lower two five-ton gates across the 4by 12-ft. conduit. Knocked down for shipment from the Westinghouse plant at Sunnyvale, Calif., the 100-ton unit occupied three railway flatcars.
PopularScience_19490501_0154_005_0121.xml
article
127
127
[no value]
[no value]
10,000 Lines Cut to Inch
[no value]
[no value]
[no value]
[no value]
THIS machine is probably the world’s finest engraving tool. Its diamond tip, guided by an operator who looks through a microscope, can scratch 10,000 lines to an inch on smooth metal. General Motors uses it to rule gold blocks that serve as comparison standards for surface finishes on bearings and other mechanical sliding parts.
PopularScience_19490501_0154_005_0122.xml
article
128
128,129
Aviation
[no value]
How to Hop 5,000 Miles Nonstop
[no value]
[no value]
[no value]
Herbert Johansen
YOUR plane is a small, light, single-engine job—like the Beechcraft Bonanza Bill Odom recently flew 5,300 miles nonstop from Hawaii to Teterboro, N. J., across the Hudson from New York City. It’s nice to have a sponsor, but be sure to check your bank balance to see that it will stand a nick of $90 for gas and oil.
PopularScience_19490501_0154_005_0123.xml
article
130
130
New Products
[no value]
New Unit Heats Homes Better for Less Money
[no value]
[no value]
[no value]
[no value]
WITH smart design and unconventional materials, General Electric engineers have turned out a new heating plant that provides more uniform, draft-free warmth at lower cost than old-style systems. A complete hot-air system, it uses 4-in. stovepipe that fits between the inner and outer walls instead of the, more expensive rectangular ducts that require special cutting.
PopularScience_19490501_0154_005_0124.xml
article
130
130
Inventions
[no value]
Ice Improves Concrete Block
[no value]
[no value]
[no value]
[no value]
ICE makes a new kind of concrete block lighter, yet stronger. The ice, mixed with the concrete, melts after the blocks are cast, leaving vacuum cavities (left) that add strength, cut weight, and increase insula tion. The water from the melting ice is absorbed by the concrete, prolonging its drying time and so making it harder.
PopularScience_19490501_0154_005_0125.xml
review
131
131
New Products
[no value]
Robot Takes Phone Messages
[no value]
[no value]
Tele-Magnet
$200
IF YOU'RE away when your phone rings, this device will take the message by recording it on magnetic wire. At the second ring, it plays a record saying you're out, then begins recording your caller's message up to 60 minutes long. It shuts off when the caller hangs up. Called the Tele-Magnet, its price is under $200.
[no value]
[no value]
PopularScience_19490501_0154_005_0126.xml
review
131
131
Photography
[no value]
Darkroom Fits Suitcase
[no value]
Farchild Aerial Surveys
[no value]
Farchild Aerial Surveys
Copy-Roll
SET up this Copy-Roll on its slim case (top) and you can make 30 photocopies an hour of a legal-size sheet. To print, put original against sensitized paper and roll them with transparent plastic tube (lower picture) enclosing light bulbs. Developer, fixer, and washing water are sponged on. Farchild Aerial Surveys makes the kit.
[no value]
[no value]
PopularScience_19490501_0154_005_0127.xml
review
131
131
Radio & Electricity
[no value]
Recorder Is Miniature
[no value]
Stancil-Hoffman
[no value]
Stancil-Hoffman
Mini-Tape
THIS portable, 10-pound tape recorder, for on-the-spot pick-ups, can be carried by a shoulder strap. Called the Mini-Tape, it measures only 6 by 7 by 13 inches and has a self-contained power supply. Made by Stancil-Hoffman, it has a tiny microphone that can be worn on lapel or wrist.
[no value]
[no value]
PopularScience_19490501_0154_005_0128.xml
review
131
131
Radio & Electricity
[no value]
Smallest Two-Way Radio
[no value]
U. S. Army Signal Corps
[no value]
U. S. Army Signal Corps
two-way radio
HERE'S a 200-yard-range two-way radio that fits all its parts—including the power supply—into an 11-ounce package you can hold in your palm. Its parts consist of plugin units that can be easily replaced. Developed by the U. S. Army Signal Corps, the set has a 2-ft., collapsible antenna.
[no value]
[no value]
PopularScience_19490501_0154_005_0129.xml
article
132
132,133
PS Features
[no value]
What's What in the Platter Battle
The old disks have been re-engineered, and two entirely new recording systems are fighting for your approval.
[no value]
[no value]
Robert Gorman
WHEN RCA uncorked a new idea in phonograph records this spring—the industry's second big change since last summer—millions of U. S. phonograph owners found themselves with a tough question to answer. Shall I switch over to the new long-playing, 12-inch records, or to the even newer, small records put out by RCA?
PopularScience_19490501_0154_005_0130.xml
article
134
134,135
Automobiles
[no value]
New Steel Tops Look Convertible
[no value]
[no value]
[no value]
[no value]
FOR motorists who like the looks of a convertible but are nervous under a tent on wheels, the automobile industry has an ingenious answer. It's a car that has the styling of a convertible but the sturdy, all-steel top of a standard model. All divisions of General Motors are putting such a car into production this spring.
PopularScience_19490501_0154_005_0131.xml
article
136
136,137,138,139,140
Science at Work
[no value]
Must We Suffer Smoke?
No—not when science has given us a dozen ways to get rid of it.
Soot “Hears” What You Can’t
[no value]
[no value]
George H. Waltz
SMOKE costs Americans more than five billion dollars a year. If the smoking chimney could be completely eliminated, you as an average city dweller or suburbanite would save at least $20 a year on your own personal laundry and cleaning bills.
PopularScience_19490501_0154_005_0132.xml
article
140
140
[no value]
[no value]
Meteors Give Siberia One-Two Punch
[no value]
[no value]
[no value]
[no value]
A METEORITE that fell in eastern Siberia in 1947 was probably one of the largest on record, according to a recent ground and aerial survey that estimates its weight as about 1,000 tons. Breaking into fragments high in the air, it struck with a noise heard more than 100 miles away, blasting craters up to 92 feet in diameter and 20 feet deep.
PopularScience_19490501_0154_005_0133.xml
article
141
141
Aviation
[no value]
Big Blow Is Vacuum-Made
[no value]
[no value]
[no value]
[no value]
WHIPPING up supersonic cyclones of 4,000 miles an hour is easy for the odd-looking wind tunnel above, recently completed at North American Aviation’s Los Angeles plant (PS, Oct. ’48, p. 118). The new tunnel will undoubtedly be the birthplace of many guided missiles, rockets, and high-speed aircraft of tomorrow.
PopularScience_19490501_0154_005_0134.xml
article
142
142,143
Science News
[no value]
MARCH OF SCIENCE
[no value]
[no value]
[no value]
[no value]
Deep-Sea Automaton. Now sunken treasure may be sought at depths beyond reach of human divers with the strange undersea machine exhibited at right by its inventor, Hans von Schultz, in Dunen, Germany. Designed to salvage valuable cargoes from wrecks, the crewless automaton is maneuvered from the surface according to images transmitted by a built-in television camera, for which four powerful lamps provide illumination.
PopularScience_19490501_0154_005_0135.xml
article
144
144
New Products
[no value]
Multiple Hammer Nails Crates
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0136.xml
article
144
144
New Products
[no value]
Materials Wriggle Uphill
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0137.xml
article
144
144
[no value]
[no value]
Tractor Rake Aids Haying
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0138.xml
article
144
144
Science at Work
[no value]
New Insulator Is Boy-Proof
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0139.xml
article
145
145
Science News
[no value]
Zoo Found Engraved On Pebble
[no value]
[no value]
[no value]
[no value]
CARVED one on top of another, nearly a dozen wild beasts adorn a pebble about the size of a large potato, shown here. Called one of the finest engravings of its kind ever brought to light, the strange work of art was discovered last summer by Dr. Hallam L. Movius, Jr., Harvard University archaeologist, while excavating a hunting-camp site at La Colombiere in eastern France.
PopularScience_19490501_0154_005_0140.xml
article
146
146,147
Aviation
[no value]
What's New in Aviation
[no value]
[no value]
[no value]
[no value]
Fuselage Flaps Flip. Diving in formation, these Navy AD Skyraiders, with all stops out, show what they have in the way of braking equipment. In a vertical dive at 500 m.p.h., the doorlike fuselage flaps will reduce speed by about 200 m.p.h. The array of brakes comes in handy both in combat maneuvers and in a diving approach on a target.
PopularScience_19490501_0154_005_0141.xml
article
148
148,149,150,151,152
PS Features
[no value]
Want to Buy a Brain?
Now yon can, for a measly $200,000. Its vacuum tubes will make up your mind for you far faster than your gray matter can.
How Univac Adds by Two's on "Gate" Vacuum Tubes
[no value]
[no value]
Martin Mann
YOU can buy a machine now to do some of your thinking for you. It will give a definite answer to any question that can be expressed mathematically. Ask one of these machines how thick the cables for a new bridge should be, and it will tell you. Ask how fast a new automobile can go before its crankshaft starts to vibrate to pieces, and it will give the exact speed.
PopularScience_19490501_0154_005_0142.xml
article
153
153,154,155,156,157
PS Features
[no value]
New Paints That A Novice Can Use
Modern chemistry is working to give you new finishes that look better, last longer, and are easier to use.
New Paint Outwears Old
One Coat Saves Cost
[no value]
[no value]
George H. Waltz
IS YOUR house beginning to look shabby? Cost too much to have it redecorated, you say? Maybe you’re right, but have you considered using any of those new finishes on the paint dealers’ shelves? Since the war, paint manufacturers have been vying to produce “wonder paints.” Now, revolutionary new products are available to lighten your painting chores.
PopularScience_19490501_0154_005_0143.xml
article
158
158,159
PS Features
[no value]
This Bridge Goes Under Water
[no value]
[no value]
[no value]
[no value]
APREFABRICATED tunnel, built in sections to be dropped to the bottom, may help speed traffic across San Francisco Bay. It is proposed to carry a six-lane highway under the 50-foot navigation channel. Together with several miles of trestle and a milelong causeway, the structure would stretch 6½ miles between San Francisco and Alameda.
PopularScience_19490501_0154_005_0144.xml
article
160
160,161,162,163,164
PS Features
[no value]
Building a Shirt Around a Man
how to Find Your Correct Shirt Size
How to Fold a Shirt for Traveling
Trick Sling Lifts Six Barrels
Mobile Saw Cuts Logs and Costs
[no value]
[no value]
[no value]
ENGINEERING shirts to fit different sizes and shapes of men takes as precise blue-printing and assembly as building an auto-mobile. The related variables are neck, sleeve, chest, and waist. For each neck size from 13½ to 16, for instance, there is a 2-in. difference in body width; for each size from 16½ to 18, a 2½-in. difference in body.
PopularScience_19490501_0154_005_0145.xml
article
165
165
Science News
[no value]
Dogfish Aid Medical Desearch
[no value]
[no value]
[no value]
[no value]
FISHERMEN hate dogfish, the littlest sharks, for their love of lobsters and fish. But they’ve found a friend. Biologists think they’re useful—and extremely interesting. For example, put a normally gray dogfish into a white-walled tank of sea water.
PopularScience_19490501_0154_005_0146.xml
article
166
166,167,168,169
PS Features
[no value]
Your New Your Eyes and Ears
Instruments that warn of unseen rays are readied for mass output to meet needs of peace or war.
[no value]
[no value]
Alden P. Armagnac
FROM a box resembling a radio cabinet comes a string of sharp metallic clicks like those of a telegraph sounder—infrequent at first, then in rapid succession. That is the atomic-age alarm. More and more people are hearing it. Some day your own safety may depend on it.
PopularScience_19490501_0154_005_0147.xml
article
170
170
Science at Work
[no value]
Photo Cell Counts Blood Cells Faster
[no value]
[no value]
[no value]
[no value]
A NEW microscope with a built-in photo cell makes blood counting speedy and automatic. With it, any nurse or office assistant needs only 15 seconds to count red and white blood corpuscles in a blood sample and measure its hemoglobin. A trained technician, using a conventional microscope, requires 15 minutes for the task.
PopularScience_19490501_0154_005_0148.xml
article
171
171
Aviation
[no value]
More Wind for Wind Tunnels
[no value]
[no value]
[no value]
[no value]
MAN-MADE cyclones, 10 times more powerful than nature's, will be everyday work for this big Westinghouse air compressor. Driven by two 25,000-hp. electric motors, it will whip up l,500-m.p.h. gales in a new supersonic wind tunnel at the Ames Aeronautical Lab at Moffett Field, Calif.
PopularScience_19490501_0154_005_0149.xml
article
171
171
Science at Work
[no value]
Light Guides flriverlcss Truck
[no value]
[no value]
[no value]
[no value]
THIS new materials-handling fork truck can start, stop, back up, turn around, and raise, lower, and tilt its cargo boom—all without a driver. By varying the frequency of pulses of a light beam with a stroboscopic disk, an operator at a distance (hidden in picture below) can make the truck do nine separate jobs.
PopularScience_19490501_0154_005_0150.xml
article
171
171
Inventions
[no value]
Retractable Skeg Aids Barge
[no value]
[no value]
[no value]
[no value]
A SIMPLE trick long used in small sailboats with centerboards is helping to make cargo barges more maneuverable. The new barge below has a small, retractable skeg on one end. In pull-towing, the skeg is lowered to keep the barge from yawing; in push-towing, it is raised out of the way.
PopularScience_19490501_0154_005_0151.xml
article
172
172
Inventions
[no value]
Stool Lightens Dentist’s Work
[no value]
[no value]
[no value]
[no value]
DR. CARROLL JOHNSON, a Chicago dentist, is shown using the Rota-Seat he invented to let him work sitting down. As seen at right, above, the rubber-wheeled stool is hinged to a plate that anchors under the patient’s chair. As the stool is moved, it carries along a footrest with a drill-control pedal.
PopularScience_19490501_0154_005_0152.xml
article
172
172
New Products
[no value]
Plastic Quilted for Upholstery
[no value]
[no value]
[no value]
[no value]
AT right is a new kind of upholstery, made by electronically heat-sealing a sandwich of fire-resistant filler between two sheets of Vinylite plastic. This method of quilting is quicker than stitching and produces a material with a tough surface that is easily cleaned.
PopularScience_19490501_0154_005_0153.xml
article
172
172
Science at Work
[no value]
Books Read from Microcards
[no value]
[no value]
[no value]
[no value]
To save library space, books are now being copied photographically in microprint on file cards. For reading, a card is put into the Micro Library Reader below. This magnifies the image 24 times in projecting it on a screen. Each 3by 5-in. card—a fine-grain photographic print—holds 30 to 200 pages of text, depending on original size.
PopularScience_19490501_0154_005_0154.xml
article
172
172
New Products
[no value]
Electricity Heats Oil Radiator
[no value]
[no value]
[no value]
[no value]
THIS liquid radiator (below) needs no central furnace, plumbing—or safety valve. It is heated by electricity and, instead of water, contains a permanent, sealed-in supply of low-expansion, heat-retaining oil. Made of pressed steel, the Hurseal unit is light enough to carry from room to room and plugs into any electrical outlet.
PopularScience_19490501_0154_005_0155.xml
article
173
173,174,175,176
Inventions
[no value]
Vaporizer Degreases Machinery
Ten seconds in chemical steam bath leaves transmission gear as clean as white shirt just back from laundry.
Degreasing Is Big Business
Safer to Use Than Naphtha
Portable Model Cleans Differential
[no value]
[no value]
Ray Milholland
WASHING heavy oil or grease off an auto-mobile transmission gear by condensation of the vapors of a volatile solvent is no thing to watch if a man scares easy. The business goes on right in front of your eyes, but at first all you see is the transmission gear, coated with thick goo, being lowered on a metal hook into an apparently empty tank.
PopularScience_19490501_0154_005_0156.xml
article
176
176
PS Features
[no value]
Fluorescent Strip on Bridge Rail Lights Road
[no value]
[no value]
[no value]
[no value]
A CONTINUOUS row of 8-foot fluorescent lamps along one railing of this bridge at Salem, Mass., throws light over the entire 32-foot roadway and the sidewalk at right. The experimental installation, by Sylvania Electric Products, lights a 500-foot section of the bridge so well that motorists can drive over it at night without headlights.
PopularScience_19490501_0154_005_0157.xml
article
177
177
[no value]
[no value]
Crankcase Ventilator Filters Vapor Impurities
[no value]
[no value]
[no value]
[no value]
THE Vacu-Vent, recently introduced by Motor Economy Products, New York, is said to reduce engine wear by filtering gaseous impurities in the crankcase and introducing the cleansed vapors into the intake manifold. Vacuum in the manifold actuates an air-valve piston in the device, creating a corresponding vacuum that draws out the crankcase vapors.
PopularScience_19490501_0154_005_0158.xml
article
177
177
Automobiles
[no value]
Water Makes Car Brush Revolve
[no value]
[no value]
[no value]
[no value]
A REVOLVING brush driven by either high or low pressure through a garden hose takes some of the work out of car washing. A stationary bumper brush reduces splashing and enables you to clean corners. The Swirl-O-Matic, sold by Melaire Distributing Co., New York, is priced at about $7.
PopularScience_19490501_0154_005_0159.xml
article
177
177
[no value]
[no value]
Pet Rider Gets Window Seat
[no value]
[no value]
[no value]
[no value]
LATEST thing in animal riding comfort is this portable, padded, railed window seat invented by W. W. Casteel of San Diego, Calif. It is a 20" diameter semicircle that hooks into the window well to give pets more air and a better view of the scenery.
PopularScience_19490501_0154_005_0160.xml
article
177
177
[no value]
[no value]
Mirror Locked by Door
[no value]
[no value]
[no value]
[no value]
A REAR-view mirror being distributed by Ford dealers hooks onto the door top so that it can't be stolen when the doors are locked. Only one screw clamp is needed for the installation. Angle of vision is adjustable from inside the car.
PopularScience_19490501_0154_005_0161.xml
article
178
178,179,180,181
Automobiles
[no value]
Gus Turns the Heat Off
The heat was on in more ways than one. A used-car dealer started it when he told his young salesman to deliver or else, and an old sedan kept it going until Gus cooled things off.
Gus Finds the Hot Spot
The Heat’s Off
[no value]
[no value]
Martin Bunn
STAN HICKS bustled into the Model Garage office. Gus Wilson, puffing his pipe, was checking over a stack of accounts with his partner, Joe Clark. “Boss,” Stan broke in, “you know—” “I’m busy,” Gus said without looking up. “But Boss,” Stan persisted, “you know Lem Spardom?”
PopularScience_19490501_0154_005_0162.xml
article
182
182,183
Automobiles
[no value]
Water-Cooled Motorcycle Starts by Hand
[no value]
[no value]
[no value]
[no value]
WATER cooling, a hand starter, and a shaft drive are among the features you’ll find in the new lightweight Velocette 149, a British motorcycle of striking appearance that’s soon to reach the U. S. market. It’s powered by a transverse, horizontally opposed twin engine with side valves.
PopularScience_19490501_0154_005_0163.xml
article
184
184
Automobiles
[no value]
Low-Cost Convertible Offers Big-Car Styling
[no value]
[no value]
[no value]
[no value]
SHOWN above is the convertible model of the Morris Minor, a small British car now being imported into the United States. The convertible sells here for about $1,600. It’s powered by a compact four-cylinder British Bulldog engine that delivers 27 hp.
PopularScience_19490501_0154_005_0164.xml
article
184
184
[no value]
[no value]
Double-Barrelled Car Sets New Speed Records
[no value]
[no value]
[no value]
[no value]
FIVE world speed records for cars with 500 cc. (30.5 cu. in.) engines have been established in Italy by this twin-fuselage racer, designed and driven by Piero Taruffi. Highest speed was 128.8 m.p.h. Streamlined to cut down air resistance, the car has vertical fins to increase stability.
PopularScience_19490501_0154_005_0165.xml
article
185
185,186,187,188
Automobiles
[no value]
How an Expert Fixes a Flat
In this shop, they do the job without taking the wheel off the car—and can do it in less than four minutes.
Specialized Tools Aid Tire Mechanics
[no value]
[no value]
R. P. Stevenson
ONE day this spring a motorist drove into a tire shop on New York City's West Side. His car was secondhand, a recent purchase. Its rubber seemed good but he wasn’t sure about the tubes. Two tire men went to work when he explained that he’d like to check the tubes.
PopularScience_19490501_0154_005_0166.xml
article
189
189
[no value]
[no value]
Mechanics and Handicraft
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0167.xml
article
190
190,191,192,193
PS Features
[no value]
How to Foil a Flood
What would you do if your home were flooded? Here are simple precautions that'll minimize mud and water damage.
[no value]
[no value]
Volta Torrey
YOU’VE seen a lot of photos of other people’s homes half submerged by swirling, muddy flood waters. A great many of those persons never expected the water to flow over their window sills. So they made mistakes that increased their losses and suffering.
PopularScience_19490501_0154_005_0168.xml
article
194
194
Mechanics & Shopwork
[no value]
Converting Drill to Saw
[no value]
[no value]
[no value]
[no value]
HELD fast in a frame with a 4" circular saw in the chuck, a ¼" electric drill becomes a very useful portable electric saw. I’ve found it particularly handy in cutting up large plywood panels. No dimensions are given since drills vary in size and shape.
PopularScience_19490501_0154_005_0169.xml
review
194
194
New Products
[no value]
Bags Protect Clothes
[no value]
Keko Products
[no value]
Keko Products
TRANSLUCENT Vinylite bags
$1.60
TRANSLUCENT Vinylite bags keep clothing fresh and clean on auto trips. Hung in the car, the dustproof zippered bags can be moved right from the car to a hotel room. The retail price is about $1.60. Keko Products Division of Kennedy Car Liner & Bag Co., Inc., of Shelbyville, Ind., is the maker.
[no value]
[no value]
PopularScience_19490501_0154_005_0170.xml
article
194
194
[no value]
[no value]
Transparent Car Exhibited
[no value]
[no value]
[no value]
[no value]
Now touring the United States is a full-sized plastic and steel model of a new British car, the Hillman Minx. Many of the car's moving parts can be seen in actual operation through the transparent plastic. The model, being displayed by Minx dealers, was built by apprentice engineers.
PopularScience_19490501_0154_005_0171.xml
article
195
195
Home Mechanics & Handicraft
[no value]
Furnish Your Garden with Saplings and Staves
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[no value]
[no value]
[no value]
RUSTIC garden furniture comes high these days, but chances are that you can beat those costs with odds and ends from almost any woodpile. Old boards from a fence or shed, for instance, will do nicely for the top of a weatherproof table, while barrel staves can be turned into backs and seats of chairs.
PopularScience_19490501_0154_005_0172.xml
article
196
196,197
Home Mechanics & Handicraft
[no value]
Chests Start Life as Orange Crates
[no value]
[no value]
[no value]
[no value]
FRUIT-CRATE furniture needn't shout where it came from. Surprisingly attractive chests of drawers, for instance, can be built from beat-up orange crates. The trick is twofold: first you take them apart and rebuild them without cracks and gaps, and then you cover them with heavy wallpaper.
PopularScience_19490501_0154_005_0173.xml
article
198
198
Home Mechanics & Handicraft
[no value]
Porringer Hammered Out of Aluminum
[no value]
[no value]
[no value]
[no value]
THOUGH hammered out by hand, the bowl of this dish is finished in a smooth, spun-metal way that’s usually associated with expensive pieces. Use either .051" or .064" aluminum. Start by cutting a circle 7½" in diameter. Use the same center to scribe another circle about 2" in diameter as a hammering guide.
PopularScience_19490501_0154_005_0174.xml
review
198
198
[no value]
[no value]
Automatic Pencil Records Inches and Fractions
[no value]
Roller Rule Sales Co.
[no value]
Roller Rule Sales Co.
Roller Rule
$2
As you roll the head of the Roller Rule along a surface, the indicator on the shank records distance of travel up to 36". Franctions of an inch, down to 1/16", are shown on the head. The maker, Roller Rule Sales Co., Los Angeles, says the pencil works on both curves and straightaways and on hard or soft surfaces. Map mileages, pipe circumferences, and tailoring measurements are a few of its many uses. The instrument is made of black plastic with the numbers inset in gold color. Price is about $2.
[no value]
[no value]
PopularScience_19490501_0154_005_0175.xml
article
199
199
Home Mechanics & Handicraft
[no value]
Plastic Pulls Give the Modern Touch
[no value]
[no value]
[no value]
[no value]
A CRYLIC plastics, with their characteristic sparkle, can add a decorative highlight to modern furniture. The drawer pulls shown here were created in the developmental studio of Rohm and Haas, Philadelphia, makers of Plexiglas. Turned handles are pictured above.
PopularScience_19490501_0154_005_0176.xml
article
200
200,201
Keeping the Home Shipshape
[no value]
Keeping the Home Shipshape
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0177.xml
article
202
202
Mechanics & Shopwork
[no value]
Car Valves Hammer Craftwork into Shape
[no value]
[no value]
[no value]
[no value]
PROFESSIONALS use broad-faced hammers with thin, springy handles for metal chasing. The work is done with a rapidfire tapping that drives the chasing tool both along and into the metal. An ordinary light hammer won’t do; the small face makes it too hard to hit the tool cleanly, and its rigid handle won’t permit the fast stroke needed.
PopularScience_19490501_0154_005_0178.xml
article
203
203
PS Features
[no value]
Electric Gate Lets the Cat Out
[no value]
[no value]
[no value]
[no value]
WHAT seems like one of the world's longer cats in the photo above is actually the beginning and end of two standard models. They are inspecting an electric cat-actuated door built by W. Griffin Paige, New York mechanical engineer. His product artfully compensates for cat behavior at doors, which is notoriously indecisive.
PopularScience_19490501_0154_005_0179.xml
article
204
204,205
Home Mechanics & Handicraft
[no value]
Homemade Bugs Pull in the Bass
[no value]
[no value]
[no value]
[no value]
SUMMERTIME is fishing time, and any angler can double the thrill of slipping a net under a fighting bass it he's using a bug he made himself. What's more, the bugs you can whip up for about a cent each would probably cost 50 cents at most tackle shops.
PopularScience_19490501_0154_005_0180.xml
article
206
206
CRAFTSMEN AT WORK
[no value]
CRAFTSMEN AT WORK
[no value]
[no value]
[no value]
[no value]
Alternate-Firing Twin. Developing an estimated 1 hp. at 7,500 r.p.m., this air-cooled two-cycle engine is only about 6½" long and 4½" high. It was built by Alton Dorfmeier, of Fresno, Calif. With the exception of a pair of rough castings for the pistons, he used nothing but scrap metal in constructing the basic engine.
PopularScience_19490501_0154_005_0181.xml
article
207
207
[no value]
[no value]
Silhouette Makes Night Light
[no value]
[no value]
[no value]
[no value]
IN A child’s room or hallway this silhouette-shaded night light is both unusual and useful. It’s a low-cost, kitchen-table project, since it is made with cardboard and glue. Laminate two or three sheets of heavy cardboard or showcard stock with glue.
PopularScience_19490501_0154_005_0182.xml
article
207
207
Home Mechanics & Handicraft
[no value]
Camp Clothesline Snaps On
[no value]
[no value]
[no value]
[no value]
AERIAL wire, snap links, and screw eyes form a camper's clothesline that's easy to put up and take down. String the wire through clip-type clothespins and wire the links to each end. Twist the screw eyes into a couple of handy trees and the line is ready to use.
PopularScience_19490501_0154_005_0183.xml
article
207
207
[no value]
[no value]
Lock Combined with Hasp
[no value]
[no value]
[no value]
[no value]
A LAMINATED padlock, safety hasp, and sliding bolt all are combined in this unit manufactured by the Master Lock Company, of Milwaukee, Wis. Attached permanently to the bolt, the padlock swings freely to permit use of the unit on either right or left doors.
PopularScience_19490501_0154_005_0184.xml
article
207
207
[no value]
[no value]
Rack Holds Drawing Pens
[no value]
[no value]
[no value]
[no value]
ALL your drawing pens are always visible for quick selection and use in this rack. The base is ¾" by 2½" by 10". Use a circular saw to cut three 3/16" by ⅜" grooves at a 20-deg. angle. I glued strips of corrugated cardboard in the grooves to hold the pens upright.
PopularScience_19490501_0154_005_0185.xml
article
208
208
Mechanics & Shopwork
[no value]
Turned Tray Has Raffled Run
[no value]
[no value]
[no value]
[no value]
RADIAL molding, which gives a ruffled rim, puts this tray in the “one of a kind” class. The ruffles are shaped on a circular saw with a homemade cutter. Mount a 1" by 12" turning blank (I used walnut) on the lathe faceplate, face true, and turn the edge true.
PopularScience_19490501_0154_005_0186.xml
article
209
209
Mechanics & Shopwork
[no value]
Plastic Memory Creates New Craft Forms
[no value]
[no value]
[no value]
[no value]
TO LOOK at them, you'd think these ornamental strips would be hours in the making. Two of them have an internal pattern, and few craftsmen can guess how it got there. The secret is in plastic memory. Acrylics like Plexiglas and Lucite, if shaped while hot, return to their original form when reheated.
PopularScience_19490501_0154_005_0187.xml
article
310
310,211,212,213
Mechanics & Shopwork
[no value]
Cutting Corners
Butt joints are the easiest to make by hand, but rabbets and miters have a lot else to recommend them.
[no value]
[no value]
Edwin M. Love
BOX sides would be easy to cut and fit if boxes had only three joints. It's the fourth that causes all the trouble. There’s no wood to spare for a second try at that last joint. It fits—or else. The fit is particularly critical in a mitered corner.
PopularScience_19490501_0154_005_0188.xml
article
214
214
Mechanics & Shopwork
[no value]
Chain Clamps Do Hard Gluing Jobs
[no value]
[no value]
[no value]
[no value]
COILS of rope or twisted wire are substitutes—but only substitutes—for column clamps. In gluing up the staves of a post or built-up bowl, special clamps usually pay off both in time saved and improved work. For putting columns together, it will be worth your while to make one or more sets of these efficient chain clamps.
PopularScience_19490501_0154_005_0189.xml
article
215
215
Mechanics & Shopwork
[no value]
Spring Pads Do Fine Spot Polishing
[no value]
[no value]
[no value]
[no value]
SPOT polishing, that de luxe method of finishing fine metalwork, becomes easier to do and more uniform in result with this spring-loaded tool. The cushioned plunger prevents excessive pressure on the abrasive, which lasts longer because the grains aren’t crushed, and work is less likely to creep under it.
PopularScience_19490501_0154_005_0190.xml
article
215
215
[no value]
[no value]
Magnet in Screwdriver Retrieves Small Parts
[no value]
[no value]
[no value]
[no value]
THE magnet in the handle of this screwdriver picks up bolts, screws, and small parts that are dropped in inaccessible places. I used a magnet about 5/16" by 1½" that I bought at a hobby shop. You can either force or cement it into a hole drilled in the handle.
PopularScience_19490501_0154_005_0191.xml
article
216
216,217
Mechanics & Shopwork
[no value]
Midget Soldering Iron Heats Up Fast
[no value]
[no value]
[no value]
[no value]
LIFT this handy little soldering iron off its cradle and it gets hot enough for use in a matter of seconds. Put it back, and the current automatically shuts off. Resistance provided by a 1,000-watt heater element, wired in series, fits the iron to 115-volt current. Without the resistance, it will operate from your car battery.
PopularScience_19490501_0154_005_0192.xml
article
218
218,219
NEW SHOP IDEAS
[no value]
NEW SHOP IDEAS
[no value]
[no value]
[no value]
[no value]
Toolpost Is Rigid. Quickly adjustable for tool height, this toolpost gives the utmost rigidity for boring, turning, and facing. The rake of the tool doesn’t alter in height adjustments, as sometimes happens with slotted posts. This rigidity is especially important if you use carbide-tipped tools.
PopularScience_19490501_0154_005_0193.xml
article
220
220
NEW TOOLS
[no value]
NEW TOOLS
[no value]
[no value]
[no value]
[no value]
Cuts Sheet Metal. A sheet-metal cutting tool that attaches to any ¼" electric drill is now produced by the Nord International Corp., of New York. Called the Nibblex, the attachment is said to be capable of making a circular cut with a radius as small as 1".
PopularScience_19490501_0154_005_0194.xml
article
221
221
[no value]
[no value]
Homemade Candles Formed in Metal-Foil Molds
[no value]
[no value]
[no value]
[no value]
ALUMINUM or other metal foil, such as is used to wrap film, is easily fashioned into molds for candles. A glass may be used as a form to shape the foil. If the foil is backed by paper, fold the metallic surface inside. Stubs of old candles, paraffin from jelly glasses, or any other suitable wax is melted and poured in the mold.
PopularScience_19490501_0154_005_0195.xml
article
221
221
Home Mechanics & Handicraft
[no value]
Nail Set Removes Moldings
[no value]
[no value]
[no value]
[no value]
A PRACTICAL way to remove moldings or quarter round without splitting or damaging them is to push the nails through. A tool for this purpose can be made by grinding down a nail set as shown in the drawing at left.—Victor H. Lamoy, Upper Jay, N. Y.
PopularScience_19490501_0154_005_0196.xml
article
221
221
[no value]
[no value]
Net Locates Lost Lures
[no value]
[no value]
[no value]
[no value]
IF You lose a valuable fishing lure over-board, tie a stout line to your dip net and use it as a drag. The net, dragging over the hooks, will often become entangled with them. The lure then can be hauled to the surface.—G. E. Hendrickson, Argyle, Wis.
PopularScience_19490501_0154_005_0197.xml
article
221
221
[no value]
[no value]
Reel Head Can Be Removed by Hand for Cleaning
[no value]
[no value]
[no value]
[no value]
No TOOLS are necessary to remove the head of the Heddon Pal Reel, making it easier for a fisherman to brush the mechanism with solvent and apply clean oil. The frame may be left attached to the reel seat while the head is removed. The maker, James Heddon's Sons, of Dowagiac, Mich., says the construction prevents the loss of small parts while removing the reel head.
PopularScience_19490501_0154_005_0198.xml
article
222
222,223
Photography
[no value]
Copying Without a Camera
[no value]
[no value]
[no value]
Kenneth M. Swezey
REFLEX printing is a handy photographic process to know even though you have no interest in photography as a hobby. With it, you can make quick copies of such things as letters, drawings, or text matter and diagrams in books and magazines.
PopularScience_19490501_0154_005_0199.xml
article
224
224,225
PHOTO IDEAS AND EQUIPMENT
[no value]
PHOTO IDEAS AND EQUIPMENT
[no value]
[no value]
[no value]
[no value]
Condenser Improves Flash. The new Jen-Flash above, made by the JenProducts Company, New York, consists of a small capacitor and a hearing-aid battery. A charge stored up in the capacitor when a bulb is inserted makes it possible to use as many as four lamps without booster batteries.
PopularScience_19490501_0154_005_0200.xml
article
226
226
What's Your Ingenuity Quotient
[no value]
What's Your Ingenuity Quotient
[no value]
[no value]
[no value]
[no value]
After digging all around a big storage tank that I wanted to remove, I found the soil underneath so pressure packed that I couldn't budge it. By then I was ready to blast the tank out except that I wanted it undamaged and I didn't have any dynamite anyway.
PopularScience_19490501_0154_005_0201.xml
article
227
227,228,229,230
Radio & Electricity
[no value]
4-Way Portable Stretches Battery Life
High and low battery positions as well as AC and DC operation give this versatile set surprising economy.
LIST OF PARTS
[no value]
[no value]
Henry C. Martin
TWO resistors can make a big difference in a radio circuit. In the little set pictured here, they make a whopping difference in economy and battery life. You've seen standard three-way portables that operate on 90 volts of B battery or from an AC or DC line.
PopularScience_19490501_0154_005_0202.xml
article
231
231
NEWS IN ELECTRONICS
[no value]
NEWS IN ELECTRONICS
[no value]
[no value]
[no value]
[no value]
Switch Cuts Radio Volume. Phone conversations needn't be interrupted by loud radios. The Rad-lo, sold by Nelson-Foote Mfg. Co., Boulder, Colo., consists of two wires that connect to the speaker and a switch that is placed near the phone. Other listeners aren't disturbed as the switch cuts volume but doesn't turn off the set.
PopularScience_19490501_0154_005_0203.xml
article
232
232
Home Mechanics & Handicraft
[no value]
Baby Rides in Back Pack
[no value]
[no value]
[no value]
[no value]
PLANNING a hiking trip through a national park this summer, my wife and I wondered what to do with the baby, who has to go along. Here’s how we solved the problem. At a surplus store, I bought for 49 cents a carrying case intended for a field radio.
PopularScience_19490501_0154_005_0204.xml
article
232
232
[no value]
[no value]
Rake Made from Saw Blades
[no value]
[no value]
[no value]
[no value]
WITH half a dozen old hacksaw blades, you can make a small garden rake that’s often useful in spots where you couldn’t work with a larger one. Break off the tip of each blade so you have a square end. Bend about ⅜" of this end to a right angle, heating first to soften the metal.
PopularScience_19490501_0154_005_0205.xml
article
232
232
[no value]
[no value]
Tool Refaces Flush Valve Seat
[no value]
[no value]
[no value]
[no value]
WHEN the valve seat in a toilet becomes pitted, a new ball valve doesn’t always stop leaks. With the tool shown, I’ve been very successful in refacing such worn seats. I start with a coarse grade of auto-valve granding compound, finish with a fine grade.
PopularScience_19490501_0154_005_0206.xml
article
232
232
[no value]
[no value]
Reflectors Improve Old Range
[no value]
[no value]
[no value]
[no value]
MANY of the older electric ranges don’t have the heating efficiency of the newer ones for a simple reason. They lack a reflector below the open-coil elements. You can remedy this at little cost. Buy a few sheets of aluminum. After removing the drip pans from beneath the elements, cut aluminum to fit into the pans.
PopularScience_19490501_0154_005_0207.xml
article
233
233,234,235
Mechanics & Shopwork
[no value]
Finishing Your Narrow-Gauge Train
[no value]
[no value]
[no value]
George Walton
THE Denver & Rio Grande’s Montezuma, for which plans appeared last month, had a four-wheeled tender. On this were mounted three tool boxes, which, probably carried the usual engine tools, extra brasses in case of hotboxes, rerailing frogs to lift derailments off the ties, and chains to link up broken drawbars.
PopularScience_19490501_0154_005_0208.xml
article
236
236,237
Automobiles
[no value]
Hints from the Modle Garage
[no value]
[no value]
[no value]
[no value]
Twine Starts Bolts. Ben H. Clare, of Wellsville, Mo., suggests you use twine the next time you have to start a bolt in a hard-to-get-at spot. Wrap the bolt with twine, hold it in place with a finger or screwdriver and pull the twine. Sometimes it may be necessary to taper the end of the bolt.
PopularScience_19490501_0154_005_0209.xml
article
238
238
[no value]
[no value]
Utility Cart Also Carries Outboard Motor
[no value]
[no value]
[no value]
[no value]
THOUGH I built this cart primarily for my outboard motor, I’ve discovered many everyday uses for it around the house. It hauls the ash can, carries groceries, serves as a portable laundry basket, and becomes a wheelbarrow with the addition of a box.
PopularScience_19490501_0154_005_0210.xml
article
238
238
Mechanics & Shopwork
[no value]
Portable Play Equipment Welded of 2" Pipe
[no value]
[no value]
[no value]
[no value]
Two adults can move this play equipment from one spot to another to follow sun or shade. Built by Frank Motte, of Nuevo, Calif., 2" black iron pipe is used throughout with 1" pieces for the braces across each end and at the corners. All joints are velde.
PopularScience_19490501_0154_005_0211.xml
article
239
239
[no value]
[no value]
Steel Channel Makes Racks
[no value]
[no value]
[no value]
[no value]
WITH a hacksaw and a wrench, you can form these cold-rolled square steel channels into frames for workbenches, tables, storage bins, motor mounts, racks, supports for conduit and cable, and other utilities. Made by Unistrut Products Co., Chicago, the square channels have one side open.
PopularScience_19490501_0154_005_0212.xml
article
239
239
Home Mechanics & Handicraft
[no value]
Asbestos Insulates Exhaust
[no value]
[no value]
[no value]
[no value]
ORDINARY asbestos pipe covering makes a neat, safe insulator for the exhaust manifold (arrow) of an inboard marine engine. Although the exhaust-pipe run is usually short, the bare pipe is still a potential source of burns and fire. Regular pipe covering used on home furnaces can be cut to length quickly and fastened in place with metal straps.
PopularScience_19490501_0154_005_0213.xml
article
239
239
[no value]
[no value]
Dart Board Is Weatherproof
[no value]
[no value]
[no value]
[no value]
BUILT especially for outdoor use, the dart board pictured here can be left outside summer and winter in sunshine or rain. The 32" square target area is asphalt fiberboard—the kind used as a liner when asbestos shingle is installed over old wooden shingles.
PopularScience_19490501_0154_005_0214.xml
article
240
240,241,242
Home Mechanics & Handicraft
[no value]
Building Your Own Screens
[no value]
[no value]
[no value]
[no value]
WITH a few simple tools and the necessary lumber, you can tailor screens to fit your windows and—just as important— save a big bite out of your budget. The tools you’ll need are a hammer, saw, scissors, and perhaps a plane. Besides the lumber, you’ll need tacks or staples and, of course, screening.
PopularScience_19490501_0154_005_0215.xml
article
243
243
[no value]
[no value]
Toy House Holds Brush
[no value]
[no value]
[no value]
[no value]
THIS simple but brightly painted tooth-brush holder will make a hit with most youngsters. Lay out the pattern on hard composition board or ¼" plywood and cut it out with a coping or jigsaw. Drill a ½" hole in a ¼" piece of wood and nail and glue it to the bottom center.
PopularScience_19490501_0154_005_0216.xml
article
243
243
[no value]
[no value]
Telescope-Microscope in One
[no value]
[no value]
[no value]
[no value]
BUILT of lightweight aluminum-alloy tubes, this 60-power telescope does double duty as a microscope. When the five tubes are collapsed, the four lenses are positioned automatically for use as a microscope. The eyepiece is adjustable for magnifications of 15, 30, and 60 times.
PopularScience_19490501_0154_005_0217.xml
article
243
243
[no value]
[no value]
Thread Makes Model Chains
[no value]
[no value]
[no value]
[no value]
BLACK thread can be knotted into excellent imitations of chains for ship models. I first stick a row of pins through a piece of cardboard. Then I tie an overhand knot around each pin, as shown in the drawing. To finish the chain, glue the ends of the threads together and slip the chain off the pins.
PopularScience_19490501_0154_005_0218.xml
article
243
243
Home Mechanics & Handicraft
[no value]
Wheel Measures Trails
[no value]
[no value]
[no value]
[no value]
NEEDING a quick way to measure the roads, land, and hiking trails at my Maine fishing camp, I built the wheel pictured here. The circumference is 73½'. A revolu tion counter on the hub keeps tabs on the distance covered. To use it, a man just pushes the wheel ahead of him as he walks along.
PopularScience_19490501_0154_005_0219.xml
article
244
244
PS Features
[no value]
Ball on Cycloid Track Always Wins the Race
[no value]
[no value]
[no value]
[no value]
HERE'S a scientific puzzler. Like a free body falling vertically, a ball rolling down an inclined plane accelerates at a uniform rate. As Galileo demonstrated, the distance travelled is proportional to the square of the time of descent.
PopularScience_19490501_0154_005_0220.xml
article
245
245
Home Mechanics & Handicraft
[no value]
How to Make Pharaoh's Serpentt Eggs
[no value]
[no value]
[no value]
[no value]
CHIEF ingredient of these serpent eggs is mercuric thiocyanate. You can buy it at chemical supply houses, or you can mix your own. Either way, wash your hands after handling it. It's poisonous. To make it, add several drops of ferric chloride solution to a saturated solution of mercuric nitrate.
PopularScience_19490501_0154_005_0221.xml
article
246
246
[no value]
[no value]
Homemade Dolly Helps You Move Furniture
[no value]
[no value]
[no value]
[no value]
YOU'LL find many uses around your home for a small dolly. Simply attach four swivel casters to a rectangular piece of wood, about 1" by 9" by 14". With this, I've handled a 300-lb. radiator quite easily. By building up the height with scrap boards, you can move just about any piece of heavy furniture.
PopularScience_19490501_0154_005_0222.xml
article
246
246
Mechanics & Shopwork
[no value]
Chisel Rack Lets Chips Fall
[no value]
[no value]
[no value]
[no value]
A CHISEL rack is handy right behind a lathe, but there it collects a mess of chips and shavings. If you space the rack about 1" away from the wall or backboard, the chips simply fall past it to the floor.
PopularScience_19490501_0154_005_0223.xml
article
246
246
[no value]
[no value]
Seed Potatoes Evenly Spaced
[no value]
[no value]
[no value]
[no value]
IF YOU'VE ever planted potatoes by hand, you know it takes a lot of stooping to do the job right. Here's a trick that enables you to plant them quickly and still avoid an aching back. Sling a bag of cut potatoes over your shoulder and drop them down the pipe, one by one, moving the planter forward each time a distance equal to the spacer on the bottom.
PopularScience_19490501_0154_005_0224.xml
article
246
246
[no value]
[no value]
New Holder Allows You to Change Plates Easily
[no value]
[no value]
[no value]
[no value]
LICENSE plates are kept secure but you can change them easily if you use a new type of holder put on the market by the Ajay Specialty Co., of Newark, N. J. An aluminum frame for the plate is also provided. The holder itself consists of two main parts, each with a retaining lip along one edge.
PopularScience_19490501_0154_005_0225.xml
article
247
247
Home Mechanics & Handicraft
[no value]
Fix It with Rubber Tape
[no value]
[no value]
[no value]
[no value]
Do you keep electrician's rubber tape in your tool kit? Chances are you have the thin, black, tarry friction tape that's everybody's patch-all. But the other kind, a thick, live, stretchable strip, is handy too. Pull off the cloth backing, and you have a surface that sticks stubbornly to itself.
PopularScience_19490501_0154_005_0226.xml
article
248
248
[no value]
[no value]
Yard Tractor Has One Wheel
[no value]
[no value]
[no value]
[no value]
BESIDES mowing your lawn, you can plow and cultivate your garden with this small gasoline tractor. Although it has only one wheel, it balances easily and steers by pressure on the pivoted handlebar. No tugging or lifting is required. Made by the Bolens Products Division, Port Washington, Wis., it’s known as the Huski Yard-Boy.
PopularScience_19490501_0154_005_0227.xml
article
248
248
[no value]
[no value]
Steel Reed Tunes Instruments
[no value]
[no value]
[no value]
[no value]
STRINGED instruments are tuned visually with a tuner made by Ardell Mfg. Co., Long Beach, Calif. It's placed as above, the string strummed, and peg turned. When a steel rod in the unit reaches its widest oscillation, the string is in tune.
PopularScience_19490501_0154_005_0228.xml
article
248
248
[no value]
[no value]
Shelf Racks Protect Screens
[no value]
[no value]
[no value]
[no value]
WIRE shelf racks taken from an old oven or ice box make excellent guards for the bottoms of screen doors that are apt to be kicked in by children or dogs. If the available rack is long enough, just staple it crosswise over the bottom of the screen.
PopularScience_19490501_0154_005_0229.xml
article
248
248
Home Mechanics & Handicraft
[no value]
Garden Hose Prevents Rips
[no value]
[no value]
[no value]
[no value]
THERE'S no need to install a regular gate in a barbed wire fence just for the sake of an occasional crossing. Instead, place two lengths of garden hose on parallel strands. You then can pass through without the threat of torn clothing.
PopularScience_19490501_0154_005_0230.xml
advertisement
249
249
[no value]
[no value]
MONTAMOWER DISTRIBUTING CO.
[no value]
MONTAMOWER DISTRIBUTING CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0231.xml
advertisement
250
250
[no value]
[no value]
PLYMOUTH
[no value]
PLYMOUTH
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0232.xml
article
251
251
[no value]
[no value]
Camera Focuses Easily
[no value]
[no value]
[no value]
[no value]
A SINGLE viewer in this all-metal, 4 × 5 press camera lets you make all focusing adjustments without taking your eye from the one window. Called a Vue-Focus, the new viewer combines optical view finder, range finder, night-focus light, and automatic parallax.
PopularScience_19490501_0154_005_0233.xml
article
251
251
[no value]
[no value]
X Rays See Deeper
[no value]
[no value]
[no value]
[no value]
To give doctors clearer pictures of your insides, GE has stepped up the power of this new diagnostic X-ray apparatus from the conventional 100,000 volts to 130,000. Yet added safety devices, including an automatic exposure timer, give both the patient and operator increased protection against excessive radiation.
PopularScience_19490501_0154_005_0234.xml
article
251
251
[no value]
[no value]
Lamps Purify Air
[no value]
[no value]
[no value]
[no value]
IF these tubular, germicidal lamps are used with your hot-air heating system, you can be sure the air you breathe is pure. Before recirculation through the ducts, air is exposed to the lamps' ultraviolet rays to kill any germs. Made by Westinghouse, the tubes are said to be as powerful after a year's burning as when new.
PopularScience_19490501_0154_005_0235.xml
article
251
251
[no value]
[no value]
Rubber Resists Fire
[no value]
[no value]
[no value]
[no value]
A NEW, low-cost sponge rubber that won't burn can be applied and vulcanized directly to rugs, upholstery, and shipping cartons. Called Spon, the compound can be shot from a hose, cast in open molds, or run off in sheets. The photo above shows how it is used to back a carpet strip.
PopularScience_19490501_0154_005_0236.xml
article
252
252
[no value]
[no value]
Two-Way Portable for Hams
[no value]
[no value]
[no value]
[no value]
THOSE tiny, two-way portable radios widely used in front-line communications during the war are now being made for amateur and public-safety use. This 33½-pound, battery-powered Sperti model operates on two bands, 144 and 148 mc., and has an average range of three miles over flat or slightly rolling country.
PopularScience_19490501_0154_005_0237.xml
article
252
252
[no value]
[no value]
New Fire Pot for Tin Workers
[no value]
[no value]
[no value]
[no value]
TINNERS need not interrupt their work to refill this new gasoline-burning Turner fire pot—it will burn for nine hours on one filling of its gallon tank. A special "carburetor" control permits regulation of the fuel supply for the best combustion at different heat requirements.
PopularScience_19490501_0154_005_0238.xml
article
252
252
[no value]
[no value]
Rubber Uoat Prop Is Tough
[no value]
[no value]
[no value]
[no value]
DRIFTWOOD and underwater obstructions, the bugaboo of boat propellers, are no problem for this Goodyear rubber outboard propeller. Made around a metal core, it is stiff enough to drive a boat yet so resilient it bounces harmlessly off objects that would damage an ordinary metal propeller or shear the drive-shaft pin.
PopularScience_19490501_0154_005_0239.xml
article
252
252
[no value]
[no value]
Thickness Gauge Fits Pocket
[no value]
[no value]
[no value]
[no value]
WANT to know the thickness of a piece of paper, sheet of metal, pane of glass? This watch-size gauge will tell you at a glance. Made by the B. C. Ames Co., it will measure any material up to 5/16 of an inch thick. The material is inserted between the two contact points at left, and the large hand indicates the thickness in .0005-inch graduations.
PopularScience_19490501_0154_005_0240.xml
advertisement
253
253
[no value]
[no value]
EASTMAN KODAK COMPANY: KODAK RETINA II CAMERA f/2
[no value]
EASTMAN KODAK COMPANY
KODAK RETINA II CAMERA f/2
[no value]
[no value]
PopularScience_19490501_0154_005_0241.xml
advertisement
254
254
[no value]
[no value]
NICHOLSON FILE COMPANY
[no value]
NICHOLSON FILE COMPANY
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0242.xml
advertisement
254
254
[no value]
[no value]
Advertisements
[no value]
THE CAMPBELL-HAUSFELD Co.
PRESSURE QUEEN
THE CAMPBELL-HAUSFELD Co.
PRESSURE PRINCESS
[no value]
[no value]
PopularScience_19490501_0154_005_0243.xml
advertisement
254
254
[no value]
[no value]
Master Rule Mfg. Co., Inc.: TUFBOY
[no value]
Master Rule Mfg. Co., Inc.
TUFBOY
[no value]
[no value]
PopularScience_19490501_0154_005_0244.xml
advertisement
255
255
[no value]
[no value]
Advertisement: SPARK PLUG
[no value]
[no value]
SPARK PLUG
[no value]
[no value]
PopularScience_19490501_0154_005_0245.xml
advertisement
256
256
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0246.xml
advertisement
256
256
[no value]
[no value]
Paint, Hardware
[no value]
Paint, Hardware
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0247.xml
advertisement
256
256
[no value]
[no value]
Advertisements
[no value]
DUBIN ELECTRONICS CO., INC.
REMOTE POWER CONTROLS
DUBIN ELECTRONICS CO., INC.
OSCILLATING ELECTRIC WINDSHIELD WIPER MOTOR
[no value]
[no value]
PopularScience_19490501_0154_005_0248.xml
advertisement
257
257
[no value]
[no value]
Advertisements
[no value]
SNAP-ON TOOLS CORP.
6-PC. WRENCH SET
SNAP-ON TOOLS CORP.
STURDY 9-PC. WRENCH SET
[no value]
[no value]
PopularScience_19490501_0154_005_0249.xml
advertisement
258
258
[no value]
[no value]
The Lufkin Rule Company
[no value]
The Lufkin Rule Company
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0250.xml
advertisement
258
258
[no value]
[no value]
SMOOTH-ON MFG. CO.: Smooth-On No. 7
[no value]
SMOOTH-ON MFG. CO.
Smooth-On No. 7
[no value]
[no value]
PopularScience_19490501_0154_005_0251.xml
advertisement
258
258
[no value]
[no value]
SID TOOL CO.
[no value]
SID TOOL CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0252.xml
advertisement
258
258
[no value]
[no value]
COLORCRETE INDUSTRIES, INC.
[no value]
COLORCRETE INDUSTRIES, INC.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0253.xml
advertisement
259
259
[no value]
[no value]
HARLEY-DAVIDSON MOTOR COMPANY
[no value]
HARLEY-DAVIDSON MOTOR COMPANY
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0254.xml
advertisement
260
260
[no value]
[no value]
Advertisements
[no value]
PORTER-CABLE Machine Co.
SHOP KIT
PORTER-CABLE Machine Co.
HOME KIT
[no value]
[no value]
PopularScience_19490501_0154_005_0255.xml
advertisement
260
260
[no value]
[no value]
PAGE DAIRY and FARM EQUIPMENT: PAGE Garden Tractor
[no value]
PAGE DAIRY and FARM EQUIPMENT
PAGE Garden Tractor
[no value]
[no value]
PopularScience_19490501_0154_005_0256.xml
advertisement
260
260
[no value]
[no value]
UNIVERSAL YONKERS CORP.: HEAVY CAST ALUMINUM BLOWER
[no value]
UNIVERSAL YONKERS CORP.
HEAVY CAST ALUMINUM BLOWER
[no value]
[no value]
PopularScience_19490501_0154_005_0257.xml
advertisement
260
260
[no value]
[no value]
WARREN WASHERS CO.
[no value]
WARREN WASHERS CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0258.xml
advertisement
261
261
[no value]
[no value]
Advertisements
[no value]
SAVAGE ARMS CORPORATION
SAVAGE MODEL 6
SAVAGE ARMS CORPORATION
SAVAGE MODEL 5
[no value]
[no value]
PopularScience_19490501_0154_005_0259.xml
advertisement
262
262
[no value]
[no value]
PurOlator: A CLOGGED OIL FILTER
[no value]
PurOlator
A CLOGGED OIL FILTER
[no value]
[no value]
PopularScience_19490501_0154_005_0260.xml
advertisement
262
262
[no value]
[no value]
JIM BROWN TOY COMPANY
[no value]
JIM BROWN TOY COMPANY
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0261.xml
advertisement
262
262
[no value]
[no value]
ATOMIC ARC WELDER CO.
[no value]
ATOMIC ARC WELDER CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0262.xml
advertisement
262
262
[no value]
[no value]
ATLAS PRESS CO.
[no value]
ATLAS PRESS CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0263.xml
advertisement
263
263
[no value]
[no value]
Champion Spark Plug Company
[no value]
Champion Spark Plug Company
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0264.xml
advertisement
264
264
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0265.xml
advertisement
265
265
[no value]
[no value]
Advertisement: DELCO-REMY
[no value]
[no value]
DELCO-REMY
[no value]
[no value]
PopularScience_19490501_0154_005_0266.xml
advertisement
266
266
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0267.xml
advertisement
267
267
[no value]
[no value]
DELTA MANUFACTURING DIVISION: DELTA-MILWAUKEE
[no value]
DELTA MANUFACTURING DIVISION
DELTA-MILWAUKEE
[no value]
[no value]
PopularScience_19490501_0154_005_0268.xml
advertisement
268
268
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0269.xml
advertisement
269
269
[no value]
[no value]
FORSBERG MFG. CO.
[no value]
FORSBERG MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0270.xml
advertisement
270
270
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0271.xml
advertisement
271
271
[no value]
[no value]
BERTRUM N. ENGINEERING Co.
[no value]
BERTRUM N. ENGINEERING Co.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0272.xml
advertisement
271
271
[no value]
[no value]
K. R. WILSON: KRW HYDRAULIC PRESS BOOK
[no value]
K. R. WILSON
KRW HYDRAULIC PRESS BOOK
[no value]
[no value]
PopularScience_19490501_0154_005_0273.xml
advertisement
271
271
[no value]
[no value]
YODER CLUTCH CORPORATION: NEW AUTOMATIC CLUTCH
[no value]
YODER CLUTCH CORPORATION
NEW AUTOMATIC CLUTCH
[no value]
[no value]
PopularScience_19490501_0154_005_0274.xml
advertisement
272
272
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0275.xml
advertisement
273
273
[no value]
[no value]
Harrington & Richardson Arms Co.: Solid Frame .22 Caliber
[no value]
Harrington & Richardson Arms Co.
Solid Frame .22 Caliber
[no value]
[no value]
PopularScience_19490501_0154_005_0276.xml
advertisement
273
273
[no value]
[no value]
BURR MFG. CO.
[no value]
BURR MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0277.xml
advertisement
274
274
[no value]
[no value]
THE SIMONIZ COMPANY: MOTORISTS WISE SIMONIZ
[no value]
THE SIMONIZ COMPANY
MOTORISTS WISE SIMONIZ
[no value]
[no value]
PopularScience_19490501_0154_005_0278.xml
advertisement
274
274
[no value]
[no value]
GENERAL Camera Company
[no value]
GENERAL Camera Company
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0279.xml
advertisement
274
274
[no value]
[no value]
FOSTER MFG. CO.: THE foster LINE POWER TOOLS
[no value]
FOSTER MFG. CO.
THE foster LINE POWER TOOLS
[no value]
[no value]
PopularScience_19490501_0154_005_0280.xml
advertisement
274
274
[no value]
[no value]
J. CARTWRIGHT & SON
[no value]
J. CARTWRIGHT & SON
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0281.xml
advertisement
275
275
[no value]
[no value]
Advertisements
[no value]
DREMEL MFG. CO.
New MOTO-SANDER
DREMEL MFG. CO.
MOTO-SAW
[no value]
[no value]
PopularScience_19490501_0154_005_0282.xml
advertisement
275
275
[no value]
[no value]
CHEMICAL PRODUCTS COMPANY: LUMINOUS PAINT
[no value]
CHEMICAL PRODUCTS COMPANY
LUMINOUS PAINT
[no value]
[no value]
PopularScience_19490501_0154_005_0283.xml
advertisement
275
275
[no value]
[no value]
LEJAY WAY MFG. CO.: D.C. ARC WELDER
[no value]
LEJAY WAY MFG. CO.
D.C. ARC WELDER
[no value]
[no value]
PopularScience_19490501_0154_005_0284.xml
advertisement
276
276
[no value]
[no value]
Advertisements
[no value]
GROBAN SUPPLY CO.
FLOODLIGHTS
GROBAN SUPPLY CO.
ELECTRIC MOTOR
[no value]
[no value]
PopularScience_19490501_0154_005_0285.xml
advertisement
277
277
[no value]
[no value]
Advertisements
[no value]
GROBAN SUPPLY CO.
HAND HYDRAULIC PUMP
GROBAN SUPPLY CO.
CENTRIFUGAL PUMP
[no value]
[no value]
PopularScience_19490501_0154_005_0286.xml
advertisement
278
278
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0287.xml
advertisement
279
279
[no value]
[no value]
JAWA MOTORCYCLE CO.: Jawa 250
[no value]
JAWA MOTORCYCLE CO.
Jawa 250
[no value]
[no value]
PopularScience_19490501_0154_005_0288.xml
advertisement
279
279
[no value]
[no value]
DIRZIUS MACHINE SHOP: FINGER TIP CONTROL
[no value]
DIRZIUS MACHINE SHOP
FINGER TIP CONTROL
[no value]
[no value]
PopularScience_19490501_0154_005_0289.xml
advertisement
279
279
[no value]
[no value]
SID TOOL CO.: AMES UNIVERSAL DIAL INDICATOR SETS
[no value]
SID TOOL CO.
AMES UNIVERSAL DIAL INDICATOR SETS
[no value]
[no value]
PopularScience_19490501_0154_005_0290.xml
advertisement
279
279
[no value]
[no value]
ALADDIN TOOL COMPANY: ALADDIN WOODSHAPING BLADES
[no value]
ALADDIN TOOL COMPANY
ALADDIN WOODSHAPING BLADES
[no value]
[no value]
PopularScience_19490501_0154_005_0291.xml
advertisement
280
280
[no value]
[no value]
Advertisements
[no value]
Hobart Brothers Company
HOBART Welding Generator
Hobart Brothers Company
Gas Engine Driven
[no value]
[no value]
PopularScience_19490501_0154_005_0292.xml
advertisement
280
280
[no value]
[no value]
CUSHMAN MOTOR WORKS, Inc
[no value]
CUSHMAN MOTOR WORKS, Inc
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0293.xml
advertisement
280
280
[no value]
[no value]
M & E MARINE SUPPLY CO.
[no value]
M & E MARINE SUPPLY CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0294.xml
advertisement
280
280
[no value]
[no value]
GAYLARK PRODUCTS: Deluxe SEAT COVERS
[no value]
GAYLARK PRODUCTS
Deluxe SEAT COVERS
[no value]
[no value]
PopularScience_19490501_0154_005_0295.xml
advertisement
281
281
[no value]
[no value]
OMAHA SCIENTIFIC SUPPLY CO.: TX-8 GEIGER COUNTER
[no value]
OMAHA SCIENTIFIC SUPPLY CO.
TX-8 GEIGER COUNTER
[no value]
[no value]
PopularScience_19490501_0154_005_0296.xml
advertisement
281
281
[no value]
[no value]
LE CLAIRE MANUFACTURING CO.
[no value]
LE CLAIRE MANUFACTURING CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0297.xml
advertisement
281
281
[no value]
[no value]
FULLERTON BOAT CO.
[no value]
FULLERTON BOAT CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0298.xml
advertisement
281
281
[no value]
[no value]
AUTOMOTIVE MILINERY OF HOLLYWOOD
[no value]
AUTOMOTIVE MILINERY OF HOLLYWOOD
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0299.xml
advertisement
282
282
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0300.xml
advertisement
283
283
[no value]
[no value]
MUSTANG MOTORCYCLE CORPORATION
[no value]
MUSTANG MOTORCYCLE CORPORATION
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0301.xml
advertisement
283
283
[no value]
[no value]
ROYAL OAK LAWN MOWER SHOP: ROYAL ROTARY MOWER
[no value]
ROYAL OAK LAWN MOWER SHOP
ROYAL ROTARY MOWER
[no value]
[no value]
PopularScience_19490501_0154_005_0302.xml
advertisement
283
283
[no value]
[no value]
MONTGOMERY WARD
[no value]
MONTGOMERY WARD
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0303.xml
advertisement
284
284
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0304.xml
advertisement
285
285
[no value]
[no value]
Binks MANUFACTURING COMPANY
[no value]
Binks MANUFACTURING COMPANY
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0305.xml
advertisement
285
285
[no value]
[no value]
BEAVER MFG. CO.: BEMACO RAPID SAW SET
[no value]
BEAVER MFG. CO.
BEMACO RAPID SAW SET
[no value]
[no value]
PopularScience_19490501_0154_005_0306.xml
advertisement
285
285
[no value]
[no value]
ALUMINUM COMPANY OF AMERICA
[no value]
ALUMINUM COMPANY OF AMERICA
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0307.xml
advertisement
285
285
[no value]
[no value]
TROUP ENGINEERING CO.
[no value]
TROUP ENGINEERING CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0308.xml
advertisement
286
286
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0309.xml
advertisement
287
287
[no value]
[no value]
Advertisements
[no value]
South Bend Bait Co.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0310.xml
advertisement
287
287
[no value]
[no value]
C & H ELECTRIC CO.
[no value]
C & H ELECTRIC CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0311.xml
advertisement
287
287
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0312.xml
advertisement
287
287
[no value]
[no value]
Advertisements
[no value]
ATLAS EQUIPMENT CO.
GAS MOWER
ATLAS EQUIPMENT CO.
ELECTRIC MOWER
[no value]
[no value]
PopularScience_19490501_0154_005_0313.xml
advertisement
288
288
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0314.xml
advertisement
289
289
[no value]
[no value]
Advertisements
[no value]
WELLWORTH TRADING CO.
PORTABLE SPRAY OUTFIT
WELLWORTH TRADING CO.
PNEUMATIC AIR TOOLS
[no value]
[no value]
PopularScience_19490501_0154_005_0315.xml
advertisement
289
289
[no value]
[no value]
MOLLY CORPORATION
[no value]
MOLLY CORPORATION
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0316.xml
advertisement
290
290
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0317.xml
advertisement
291
291
[no value]
[no value]
LUMITE DIVISION
[no value]
LUMITE DIVISION
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0318.xml
advertisement
292
292
[no value]
[no value]
DU-FAST, Inc.
[no value]
DU-FAST, Inc.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0319.xml
advertisement
292
292
[no value]
[no value]
R. D. Werner Co.: CHROMTRIM METAL MOULDINGS
[no value]
R. D. Werner Co.
CHROMTRIM METAL MOULDINGS
[no value]
[no value]
PopularScience_19490501_0154_005_0320.xml
advertisement
292
292
[no value]
[no value]
PAVINOLEUM, INC.
[no value]
PAVINOLEUM, INC.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0321.xml
review
292
292,293,294,295
[no value]
[no value]
Aids to Modern Living
[no value]
Leipzig and Lippe, Inc.
[no value]
Leipzig and Lippe, Inc.
Cups Clipped
$1
Cups Clipped in Rack. Each of these plastic racks holds four cups and can be installed at any angle under a shelf, on a cupboard door, wall, or in a drawer. To insert cups, roll them over and around the circle until the base of the cup clips into place. The maker, Leipzig and Lippe, Inc., New York City, prices the racks at $1.
Leipzig and Lippe, Inc.
Nutcracker
$4
Nutcracker Is Pistol Shaped. While this cracker handles all kinds of nuts, it is mainly designed for pecans, permitting the meat to be extracted whole. Pulling the trigger moves the front cracking cup forward. The nut is inserted and the handles squeezed to crack it. The device is made of aluminum die castings by the John W. Clark Industries, of San Marcos, Tex. It retails for about $4.
Leipzig and Lippe, Inc.
Baby Carriage
Baby Carriage Climbs Stairs. Almost every mother knows the difficulty of getting a baby carriage up and down stairs and curbs. This carriage, a new British product, licks the problem with the six small wheels—three on each side—at the rear. Each of the small wheels revolves on its own axle and each set turns on a common axle.
Leipzig and Lippe, Inc.
Infrared Rays
$42
Infrared Rays Cook Food. Another push-button kitchen aid is this cooker that fries, broils, or bakes with heat from two infrared lamps. Two lamps, one above and the other below, are focused on a transparent food tray. In photo, piece of meat wrapped in plastic is being placed on the tray. Steaks can be prepared in from one and a half to six minutes. The Dorby Co., Chicago, prices it about $42.
Leipzig and Lippe, Inc.
Sports Cap
$2.50
Sports Cap Has Zipper Pocket. A zipper pocket and loops on the visor for golf tees or fishing flies are features of this sports cap made by Westbrook Hats, Inc., New York City. The Vinylite visor is forest green and is also available without the loops. On the beach, the cap pocket can be used to carry a watch, cash, a few cigarettes and matches, or a bath-locker key. Price is about $2.50.
Leipzig and Lippe, Inc.
Windowed Canisters
Windowed Canisters. A glance at these canisters tells a housewife how much sugar, rice, flour, or dried food she has on hand. The all-plastic containers are made by Canistor, Inc., of Racine, Wis.
[no value]
[no value]
PopularScience_19490501_0154_005_0322.xml
advertisement
293
293
[no value]
[no value]
PLASTI-KOTE, INC.: SPRAZIT FIRE EXTINGUISHER
[no value]
PLASTI-KOTE, INC.
SPRAZIT FIRE EXTINGUISHER
[no value]
[no value]
PopularScience_19490501_0154_005_0323.xml
advertisement
293
293
[no value]
[no value]
BURGESS BATTERY COMPANY: electric paint sprayer
[no value]
BURGESS BATTERY COMPANY
electric paint sprayer
[no value]
[no value]
PopularScience_19490501_0154_005_0324.xml
advertisement
294
294
[no value]
[no value]
KAYTEE PRODUCTS: THE JIFFY METAL CABINET
[no value]
KAYTEE PRODUCTS
THE JIFFY METAL CABINET
[no value]
[no value]
PopularScience_19490501_0154_005_0325.xml
advertisement
294
294
[no value]
[no value]
WILSON-IMPERIAL COMPANY: WONDER-PASTE
[no value]
WILSON-IMPERIAL COMPANY
WONDER-PASTE
[no value]
[no value]
PopularScience_19490501_0154_005_0326.xml
advertisement
294
294
[no value]
[no value]
THE FAYRE MANUFACTURIN CO.: SAFETY WINDOW SEAT
[no value]
THE FAYRE MANUFACTURIN CO.
SAFETY WINDOW SEAT
[no value]
[no value]
PopularScience_19490501_0154_005_0327.xml
advertisement
295
295
[no value]
[no value]
Advertisements
[no value]
SWIRL-O-MATIC
SWIRL-O-MATIC
[no value]
[no value]
PopularScience_19490501_0154_005_0328.xml
advertisement
295
295
[no value]
[no value]
STAR FUSE CO.
[no value]
STAR FUSE CO.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0329.xml
advertisement
295
295
[no value]
[no value]
SPRAYON, INC.
[no value]
SPRAYON, INC.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0330.xml
article
296
296
Prescribe TV For Your M. D.
[no value]
Prescribe TV For Your M. D.
[no value]
[no value]
[no value]
[no value]
PS EDITORS disregard many predictions —often they cannot be proved true or false for a long time—but pass on to you those that seem most plausible and interesting. In February, 1947, we reported Dr. Vladimir K. Zworykin’s prophecy that television might change one’s whole concept of educational techniques, especially in medicine.
PopularScience_19490501_0154_005_0331.xml
advertisement
297
297
[no value]
[no value]
THE ARCO CO.: Pad-O'-Paint
[no value]
THE ARCO CO.
Pad-O'-Paint
[no value]
[no value]
PopularScience_19490501_0154_005_0332.xml
advertisement
298
298
[no value]
[no value]
NATIONAL CARBON COMPANY, INC.: Eveready' batteries
[no value]
NATIONAL CARBON COMPANY, INC.
Eveready' batteries
[no value]
[no value]
PopularScience_19490501_0154_005_0333.xml
advertisement
299
299
[no value]
[no value]
FOSTER PRODUCTS, INC.
[no value]
FOSTER PRODUCTS, INC.
[no value]
[no value]
[no value]
PopularScience_19490501_0154_005_0334.xml
advertisement
300
300
[no value]
[no value]
R. J. Reynolds Tob. Co.: CAMELS
[no value]
R. J. Reynolds Tob. Co.
CAMELS
[no value]
[no value]
PopularScience_19490501_0154_005_0335.xml