Issue: 19471101

Saturday, November 1, 1947
NOV. 1947
5
False
151
Wednesday, December 31, 2014

Articles
cover
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0_1
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POPULAR SCIENCE
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PopularScience_19471101_0151_005_0001.xml
advertisement
0_2
0_2,1
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National Educational Alliance Inc.
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National Educational Alliance Inc.
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PopularScience_19471101_0151_005_0002.xml
masthead
2
2
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POPULAR SCIENCE
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PopularScience_19471101_0151_005_0003.xml
tableOfContents
2
2,4
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NOVEMBER 1947
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PopularScience_19471101_0151_005_0004.xml
advertisement
3
3
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UNICORN PRESS
[no value]
UNICORN PRESS
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PopularScience_19471101_0151_005_0005.xml
advertisement
4
4
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Advertisement: PEPSI-COLA
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PEPSI-COLA
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PopularScience_19471101_0151_005_0006.xml
advertisement
5
5
[no value]
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0007.xml
advertisement
6
6
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[no value]
BELL TELEPHONE LABORATORIES
[no value]
BELL TELEPHONE LABORATORIES
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0008.xml
advertisement
7
7
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NATIONAL CARBON COMPANY, INC.: "EVEREADY"
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NATIONAL CARBON COMPANY, INC.
"EVEREADY"
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[no value]
PopularScience_19471101_0151_005_0009.xml
advertisement
8
8
[no value]
[no value]
CASTLE FILMS
[no value]
CASTLE FILMS
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[no value]
PopularScience_19471101_0151_005_0010.xml
advertisement
9
9
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[no value]
LASALLE EXTENSION UNIVERSITY
[no value]
LASALLE EXTENSION UNIVERSITY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0011.xml
advertisement
10
10
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ART INSTRUCTION INC
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ART INSTRUCTION INC
[no value]
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PopularScience_19471101_0151_005_0012.xml
advertisement
11
11
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[no value]
COYNE ELECTRICAL SCHOOL
[no value]
COYNE ELECTRICAL SCHOOL
[no value]
[no value]
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PopularScience_19471101_0151_005_0013.xml
advertisement
12
12
[no value]
[no value]
The ROSICRUCIANS
[no value]
The ROSICRUCIANS
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[no value]
[no value]
PopularScience_19471101_0151_005_0014.xml
advertisement
13
13
[no value]
[no value]
AUDEL
[no value]
AUDEL
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PopularScience_19471101_0151_005_0015.xml
advertisement
14
14
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[no value]
SPRAYBERRY ACADEMY OF RADIO
[no value]
SPRAYBERRY ACADEMY OF RADIO
[no value]
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PopularScience_19471101_0151_005_0016.xml
advertisement
15
15
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CLARENCE A. O'BRIEN & HARVEY B. JACOBSON
[no value]
CLARENCE A. O'BRIEN & HARVEY B. JACOBSON
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0017.xml
advertisement
16
16
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[no value]
THE PORTER CHEMICAL CO.
[no value]
THE PORTER CHEMICAL CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0018.xml
article
16
16,18
LETTERS
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LETTERS
Wrong Rocket
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[no value]
Sir: The rocket taking off on page 124 of the September issue, called a V-2, is actually a Wac Corporal, which takes off with the aid of a booster rocket. The booster is indicated by the black, smoky flame characteristic of powder boosters.
PopularScience_19471101_0151_005_0019.xml
advertisement
17
17
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[no value]
MCMORROW, BERMAN & DAVIDSON
[no value]
MCMORROW, BERMAN & DAVIDSON
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0020.xml
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18
18
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PYROIL COMPANY
[no value]
PYROIL COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0021.xml
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19
19
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INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
INTERNATIONAL CORRESPONDENCE SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0022.xml
advertisement
20
20
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Advertisements
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PopularScience_19471101_0151_005_0023.xml
advertisement
21
21
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[no value]
DeFOREST’S TRAINING, INC.
[no value]
DeFOREST’S TRAINING, INC.
[no value]
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[no value]
PopularScience_19471101_0151_005_0024.xml
advertisement
22
22
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Advertisements
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PopularScience_19471101_0151_005_0025.xml
advertisement
23
23
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[no value]
VICTOR J. EVANS & CO.
[no value]
VICTOR J. EVANS & CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0026.xml
advertisement
24
24
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Advertisements
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PopularScience_19471101_0151_005_0027.xml
advertisement
25
25
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COYNE ELECTRICAL SCHOOL
[no value]
COYNE ELECTRICAL SCHOOL
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0028.xml
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26
26
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Advertisements
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PopularScience_19471101_0151_005_0029.xml
advertisement
27
27
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CHICAGO TECHNICAL COLLEGE
[no value]
CHICAGO TECHNICAL COLLEGE
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PopularScience_19471101_0151_005_0030.xml
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28
28
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Advertisements
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PopularScience_19471101_0151_005_0031.xml
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29
29
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[no value]
NATIONAL SCHOOLS
[no value]
NATIONAL SCHOOLS
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[no value]
[no value]
PopularScience_19471101_0151_005_0032.xml
advertisement
30
30
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Advertisements
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PopularScience_19471101_0151_005_0033.xml
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31
31
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Plastics Industries Technical Institute
[no value]
Plastics Industries Technical Institute
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PopularScience_19471101_0151_005_0034.xml
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32
32
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Advertisements
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SURPLUS DISTRIBUTORS
NAVY COLD-WEATHER PANTS
SURPLUS DISTRIBUTORS
GLIDER COVER
[no value]
[no value]
PopularScience_19471101_0151_005_0035.xml
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33
33
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MoToR Book Dept.
[no value]
MoToR Book Dept.
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PopularScience_19471101_0151_005_0036.xml
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34
34
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Advertisements
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PopularScience_19471101_0151_005_0037.xml
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35
35
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U. S. SCHOOL OF MUSIC
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U. S. SCHOOL OF MUSIC
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0038.xml
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36
36
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Advertisements
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PopularScience_19471101_0151_005_0039.xml
advertisement
37
37
[no value]
[no value]
GOODHEART-WILLCOX CO.
[no value]
GOODHEART-WILLCOX CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0040.xml
advertisement
38
38
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Advertisements
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PopularScience_19471101_0151_005_0041.xml
advertisement
39
39
[no value]
[no value]
McGRAW-HILL BOOK CO.
[no value]
McGRAW-HILL BOOK CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0042.xml
advertisement
40
40
[no value]
[no value]
Advertisements
[no value]
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PopularScience_19471101_0151_005_0043.xml
advertisement
41
41
[no value]
[no value]
MIDWEST RADIO CORP.
[no value]
MIDWEST RADIO CORP.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0044.xml
advertisement
42
42
[no value]
[no value]
Advertisements
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PopularScience_19471101_0151_005_0045.xml
advertisement
43
43
[no value]
[no value]
MICHIGAN TECHNICAL INSTITUTE
[no value]
MICHIGAN TECHNICAL INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0046.xml
advertisement
43
43
[no value]
[no value]
AMERICAN SCHOOL
[no value]
AMERICAN SCHOOL
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0047.xml
advertisement
44
44
[no value]
[no value]
Advertisements
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PopularScience_19471101_0151_005_0048.xml
advertisement
45
45
[no value]
[no value]
HEMPHILL DIESEL AND AUTOMOTIVE SCHOOLS
[no value]
HEMPHILL DIESEL AND AUTOMOTIVE SCHOOLS
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0049.xml
advertisement
45
45
[no value]
[no value]
COMMERCIAL TRADES INSTITUTE
[no value]
COMMERCIAL TRADES INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0050.xml
advertisement
46
46
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Advertisements
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PopularScience_19471101_0151_005_0051.xml
advertisement
47
47
[no value]
[no value]
MILWAUKEE SCHOOL OF ENGINEERING
[no value]
MILWAUKEE SCHOOL OF ENGINEERING
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0052.xml
advertisement
47
47
[no value]
[no value]
UNIVERSAL MARKETING CO.
[no value]
UNIVERSAL MARKETING CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0053.xml
advertisement
47
47
[no value]
[no value]
WASHINGTON SCHOOL OF ART
[no value]
WASHINGTON SCHOOL OF ART
[no value]
[no value]
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PopularScience_19471101_0151_005_0054.xml
advertisement
48
48
[no value]
[no value]
Advertisements
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PopularScience_19471101_0151_005_0055.xml
advertisement
49
49
[no value]
[no value]
Advertisements
[no value]
EDMUND SALVAGE CO.
BUBBLE SEXTANT
EDMUND SALVAGE CO.
MOUNTED PROJECTING LENS SYSTEM
[no value]
[no value]
PopularScience_19471101_0151_005_0056.xml
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50
50
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Advertisements
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PopularScience_19471101_0151_005_0057.xml
advertisement
51
51
[no value]
[no value]
PACIFIC TRAINING SCHOOL
[no value]
PACIFIC TRAINING SCHOOL
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0058.xml
advertisement
51
51
[no value]
[no value]
Rochester Department of Commerce
[no value]
Rochester Department of Commerce
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0059.xml
advertisement
51
51
[no value]
[no value]
FRANKLIN INST.
[no value]
FRANKLIN INST.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0060.xml
advertisement
52
52
[no value]
[no value]
Advertisements
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PopularScience_19471101_0151_005_0061.xml
advertisement
53
53
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
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[no value]
PopularScience_19471101_0151_005_0062.xml
advertisement
54
54
[no value]
[no value]
Advertisements
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PopularScience_19471101_0151_005_0063.xml
advertisement
55
55
[no value]
[no value]
WYPE CORP.
[no value]
WYPE CORP.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0064.xml
advertisement
55
55
[no value]
[no value]
National School of Meat Cutting
[no value]
National School of Meat Cutting
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0065.xml
advertisement
56
56
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0066.xml
advertisement
57
57
[no value]
[no value]
Commercial Trades Institute
[no value]
Commercial Trades Institute
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0067.xml
advertisement
57
57
[no value]
[no value]
Engineer Dobe
[no value]
Engineer Dobe
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0068.xml
advertisement
58
58
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0069.xml
advertisement
59
59
[no value]
[no value]
R & M RADIO COMPANY
[no value]
R & M RADIO COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0070.xml
advertisement
59
59
[no value]
[no value]
EMPIRE TRADES and HANDICRAFTS
[no value]
EMPIRE TRADES and HANDICRAFTS
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0071.xml
advertisement
60
60
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0072.xml
advertisement
61
61
[no value]
[no value]
National Trade School
[no value]
National Trade School
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0073.xml
advertisement
61
61
[no value]
[no value]
ERA METER CO.
[no value]
ERA METER CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0074.xml
advertisement
61
61
[no value]
[no value]
CHEMICAL RESEARCH CO.
[no value]
CHEMICAL RESEARCH CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0075.xml
advertisement
61
61
[no value]
[no value]
J. C LARSON COMPANY
[no value]
J. C LARSON COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0076.xml
advertisement
62
62
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0077.xml
advertisement
63
63
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0078.xml
advertisement
64
64
[no value]
[no value]
Advertisements
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[no value]
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PopularScience_19471101_0151_005_0079.xml
advertisement
65
65
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Advertisements
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PopularScience_19471101_0151_005_0080.xml
advertisement
66
66
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Advertisements
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PopularScience_19471101_0151_005_0081.xml
advertisement
67
67
[no value]
[no value]
Advertisements
[no value]
[no value]
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PopularScience_19471101_0151_005_0082.xml
advertisement
68
68
[no value]
[no value]
Advertisements
[no value]
[no value]
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PopularScience_19471101_0151_005_0083.xml
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69
69
[no value]
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Advertisements
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PopularScience_19471101_0151_005_0084.xml
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70
70
[no value]
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Advertisements
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[no value]
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PopularScience_19471101_0151_005_0085.xml
advertisement
71
71
[no value]
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Advertisements
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PopularScience_19471101_0151_005_0086.xml
advertisement
72
72
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Advertisements
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PopularScience_19471101_0151_005_0087.xml
advertisement
73
73
[no value]
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Advertisements
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[no value]
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[no value]
PopularScience_19471101_0151_005_0088.xml
advertisement
74
74
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0089.xml
advertisement
75
75
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
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[no value]
PopularScience_19471101_0151_005_0090.xml
advertisement
76
76
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0091.xml
advertisement
77
77
[no value]
[no value]
BROWNSCOPE CO.
[no value]
BROWNSCOPE CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0092.xml
advertisement
77
77
[no value]
[no value]
HAMMER BLOW TOOL COMPANY
[no value]
HAMMER BLOW TOOL COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0093.xml
advertisement
77
77
[no value]
[no value]
Vanco Products Inc.
[no value]
Vanco Products Inc.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0094.xml
advertisement
77
77
[no value]
[no value]
FRANKLIN INSTITUTE
[no value]
FRANKLIN INSTITUTE
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0095.xml
advertisement
77B
77B
[no value]
[no value]
STARK'S
[no value]
STARK'S
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0096.xml
advertisement
77C
77C,77D,77E,77F,77G,77H,77I,77J,77K,77L,77M,77N,77O,77P
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Advertisements
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PopularScience_19471101_0151_005_0097.xml
advertisement
77A
77A
[no value]
[no value]
THE PENMAN
[no value]
THE PENMAN
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0098.xml
advertisement
78A
78A
[no value]
[no value]
RADIO CORPORATION of AMERICA
[no value]
RADIO CORPORATION of AMERICA
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0099.xml
article
79A
79A
PSM
The Voioe of Science
Atomics for Schoolboys
[no value]
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[no value]
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MEET Richard Sinnott, age 18. He is a student at the El Cerrito High School in California. He is sitting at the unglamorous plywood control board of one of the most exciting machines ever devised by man. It is a baby cyclotron, put together by four El Cerrito students under the inspired leadership of their physics instructor, Ben Siegel (see p. 102).
PopularScience_19471101_0151_005_0100.xml
advertisement
80A
80A
[no value]
[no value]
R. J. Reynolds Tobacco Co.
[no value]
R. J. Reynolds Tobacco Co.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0101.xml
article
81
81
PSM Features
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Tough, Dangerous, and Dirty ...
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Working high up in a regenerating unit is but one of the many nasty and hazardous jobs involved in the annual cleaning of a cat-cracker. These catalytic oil-processing units, operating 24 hours a day at temperatures around 1,000° F, take a terrific beating from erosion and corrosion.
PopularScience_19471101_0151_005_0102.xml
article
82
82,83,84,85
Aviation
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Robot Planes Dive Into Speed's Mysteries
Without pilots or engines, the Navy’s 600-mile-an-hour midgets report from the edge of the sonic barrier.
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[no value]
George H. Waltz
AB-17 drones steadily across the sky. Suddenly, from under its wing, a tiny plane drops into a steep dive. No propeller spins, no jet roars, but it screams down at 600 m.p.h. No pilot sits at the controls, but the midget pulls out of the dive and swings upward in a long curve.
PopularScience_19471101_0151_005_0103.xml
article
86
86
Science at Work
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Punches Holes in Water
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PUTTING a hole in a liquid is tough enough, but the U. S. Steel Corp. Research Laboratory in Kearny, N. J., goes one better and punches the round hole above with a square peg. It’s part of a quenching operation to increase the wear resistance and hardness of steel.
PopularScience_19471101_0151_005_0104.xml
article
86
86
PSM Features
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Potent Push-Up
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THERE’S a new electric strongman in the steel mills—the fork and ram truck designed by B. I. Ulinski to lift and move heavy rails. In this demonstration, the automatic lift truck hoists a 45,000-lb. boxcar. It can handle loads from 10 to 30 tons.
PopularScience_19471101_0151_005_0105.xml
article
87
87,88,89,90,91
Science at Work
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Mail-Order Isotopes
Mass production of man-made “radium” provides a wonder tool to aid international research.
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[no value]
Alden P. Armagnac
A NEW era in medicine and technology began last September 5 when a lead-lined box containing radioactive phosphorus started by plane for Melbourne, Australia. Urgently needed to treat a patient with a blood disorder, it inaugurated world-wide distribution of man-made radioisotopes— “artificial radium” in layman’s language— from the chain-reacting uranium pile at Oak Ridge, Tennessee.
PopularScience_19471101_0151_005_0106.xml
article
92
92
PSM Features
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Gun Shoots Rail Holes
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THIS “cannon” speeds track-laying by shooting holes in steel rails. Made by Mine Safety Appliance Co., the 45-pound gun uses a cartridge slightly larger than a .45 to blast a punch through ¾-inch steel. Tapping firing pin, at left above, sets it off. At right are (l. to r.) the gun, cartridge, barrel, punch, and breech; in foreground is a compressed-air ramrod. Punch—and resulting hole—can be up to 1½ inches in diameter.
PopularScience_19471101_0151_005_0107.xml
article
92
92
Radio & Electricity
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Antenna Stretches Tele
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THE Vee-D-X, a new long-distance antenna, makes television reception possible as far as 125 miles. It has high forward pickup, but little at sides and back, minimizing interference. Easily installed, it weighs 25 lb., has low wind resistance.
PopularScience_19471101_0151_005_0108.xml
article
92
92
Automobiles
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Baby Austins Grow Up
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THESE full-size, luxurious cars are two of the four new British-made Austins that will make their debut in 1948. The “Sheerline” (top, below) has a 6-cylinder, 130-hp. engine; the “Princess” (bottom) boasts 10 hp. more and many special features.
PopularScience_19471101_0151_005_0109.xml
article
93
93
PSM Features
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How Germans Build Mud Homes
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GERMANS struggling to rebuild their shattered homes are going right back to Mother Earth. Dried mud blocks are being used for houses in a new settlement on a one-time drill field near Frankfort on Main. Twenty-six houses, each of four or five rooms and a basement, are to be completed this year.
PopularScience_19471101_0151_005_0110.xml
article
94
94,95,96,97,98,99
Radio & Electricity
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The Microwaves Are Coming !
Invisible network will handle phone calls, telegrams, television, FM and AM broadcasts, complete newspapers—even carry your mail.
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[no value]
Martin Mann
COMMUNICATIONS are being revolutionized faster than you think. The humming wires beside the highways already are rivaled by new systems, capable of transmitting more spoken or written words and more still or moving pictures from coast to coast.
PopularScience_19471101_0151_005_0111.xml
article
100
100
WHAT’S NEW IN AVIATION
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Tower Tests Rotors
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This 40-foot cone at Langley Field, Va., is the NACA’s device for testing performance of helicopter rotors without bothering to send them aloft. Instruments in the tower measure thrust and side forces, blade pitch, wind, engine r.p.m., and many other factors, while oscillographs record all data for analysis.
PopularScience_19471101_0151_005_0112.xml
article
101
101
Aviation
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Trailer Grows Wings
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For transport to and from airports, the Miles M-68’s freight compartment turns into a trailer. The center of the fuselage is detachable (the four-engine British carrier flies with or without it) and has removable wheels and a towing bar.
PopularScience_19471101_0151_005_0113.xml
article
102
102,103,104,105
Science News
[no value]
Boys Build A Cyclotron
This little atom smasher, designed by California high school students, works just like the big ones.
[no value]
[no value]
Andrew R. Boone
THE young nuclear physicist who won the Nobel prize by developing the cyclotron, Ernest O. Lawrence, started out with a little glass device that looked like a frying pan. Since then, cyclotrons have become such mammoth, complex, and expensive machines that the patent holders are rarely bothered by requests for licenses to build them.
PopularScience_19471101_0151_005_0114.xml
article
106
106,107
PSM Features
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Big Factories Start Small
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WANT to build a factory? With these tiny models of machinery, you can set it up, change it around until perfect, and then translate the layout into floor plans— all at a fraction of the cost of ordinary, drawing-board planning methods. By combining stock parts with custom-tailored bases, the models are both accurate and inexpensive.
PopularScience_19471101_0151_005_0115.xml
article
108
108
Science News
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Chemicals Grow Crystals
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RESEMBLING a cluster of ice cubes, these are really seeds for telephone crystals. When lowered into a supersaturated solution of EDT—ethylene diamine tartrate—they will grow a crop of synthetic crystals. Developed by Bell engineers, these will replace natural but hard-to-get quartz in long-distance telephone circuits.
PopularScience_19471101_0151_005_0116.xml
article
108
108
PSM Features
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Mirror Detects Flaws
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TRACKWALKERS of the Southern Pacific Railroad take no chances on missing any weaknesses in the rails they inspect. The device shown here has a mirror set at an angle at one end, enabling them to inspect the far side of the rails they patrol. Known as the Sands Rail Inspector, it is used in addition to periodic test by detector cars.
PopularScience_19471101_0151_005_0117.xml
article
108
108
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The Splash Is Gone
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As TAP water passes through this faucet attachment, it is permeated by millions of air bubbles. The result is crystal-clear water that is splashless, softer, and better tasting. Called the Velva-Flo, the device is made by Firestone Industrial Products Co.
PopularScience_19471101_0151_005_0118.xml
article
108
108
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Dust Can’t Penetrate
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CLEAN areas of this subject’s face testify that even carbon black does not penetrate the filter of the American Optical Company’s new respirator. Chemical treatment of its fibers makes this filter 40 times more efficient than untreated ones.
PopularScience_19471101_0151_005_0119.xml
article
109
109,110
Aviation
[no value]
Analyzer Spots Aircraft-Engine Troubles Aloft
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LIKE a hidden microphone eavesdropping on a secret meeting, a new electronic analyzer for aircraft engines tells just what’s happening inside any cylinder of any engine at any time—in flight or on the ground. So accurate that it can spot a single misbehaving spark plug out of the 224 on some big air liners, the analyzer helps avert engine failures aloft and saves valuable hours for ground repair crews by telling them exactly what they’re looking for.
PopularScience_19471101_0151_005_0120.xml
article
110
110
Mechanics & Shopcraft
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Quick-Dry Water Paint Is Odorless and Tough
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USING a water-dispersed emulsion of synthetic resin instead of the usual drying oils, a new paint that dries in half an hour is said to rival the appearance and durability of oil finishes. Its ability to withstand washing and scrubbing, in contrast to other water-mix paints, is illustrated in the two photographs at the right.
PopularScience_19471101_0151_005_0121.xml
article
111
111
PSM Features
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Easing Trucker’s Job
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A BOON to drivers, an automatic lift gate installed on rear of this truck saves a lot of back-breaking work. Operated by power take-off from the truck engine, it facilitates the handling of heavy and bulky loads, thus speeding up delivery and pickup schedules.
PopularScience_19471101_0151_005_0122.xml
article
111
111
Inventions
[no value]
Climbing to the Rescue
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[no value]
ANOTHER new type of lift is this contraption that climbs up the side of a building to rescue persons trapped by fire. Called a “Mechanical Fly” by its inventor, W. J. Bernett, of Kansas City, Mo., it travels along the ground on rubber-tired wheels.
PopularScience_19471101_0151_005_0123.xml
article
111
111
Radio & Electricity
[no value]
Remote Control Speeds Rail Traffic
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TRAIN operation under written orders is on the way out. Dispatching boards like the one shown below used by the Union Pacific permit centralized control of rail traffic. Through finger-tip manipulation of switches and block signals, dispatchers have continuous control over traffic along hundreds of miles of track.
PopularScience_19471101_0151_005_0124.xml
article
112
112
PSM Features
[no value]
Cub Ttactor —Toy Version
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[no value]
WHILE production was under way for delivery of the first new Farmall cub tractors to America’s farmers, the International Harvester Co. also was tooling up on a pint-size toy version for Junior. The model, shown here being assembled, is a faithful reproduction of the McCormick-Deering Farmall, scaled down to 1/16 size.
PopularScience_19471101_0151_005_0125.xml
article
113
113,114,115,116,117
Science News
[no value]
Tune In a Painting
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[no value]
[no value]
TAKE a good look at the front cover of this issue of your Popular Science Monthly. You are looking at something you have never seen before—a picture that was transmitted by radio in one operation and imprinted on a sheet of ordinary paper. This is known as color facsimile. It is the product of years of effort to transmit an image by wire or radio and reproduce it perfectly on ordinary paper at the receiving point.
PopularScience_19471101_0151_005_0126.xml
article
118
118,119
Inventions
[no value]
NEW IDEAS FROM THE INVENTORS
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[no value]
[no value]
[no value]
Rockers Lift Loads. Curved, rockerlike runners, extending downward from the sides of this novel hand truck, help lift heavy loads by allowing it to tip easily into a vertical position. Patented by John Donald, of Birmingham, England, the truck is turned up on end to receive the load, then pulled down again to raise it.
PopularScience_19471101_0151_005_0127.xml
article
120
120,121
Science at Work
[no value]
Rockets Outgrow Their Desert Range
Research at White Sands is producing missiles too big and too powerful to be fired except with an ocean near by.
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WHITE SANDS, the rocket proving ground in New Mexico that has launched dozens of German and American missiles on the trail of the secrets of outer space, is working itself out of a job. From research at this bright desert post are coming new rockets too powerful to be fired within its limited confines.
PopularScience_19471101_0151_005_0128.xml
article
122
122,123
MECHANICS OF LIVING
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Six Billion Soft Drinks A Day
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[no value]
[no value]
[no value]
THE world’s largest water softening and filtering plant, at La Verne, Calif., turns six billion glassfuls of hard water into soft water daily. How it works illustrates the solution of an outstanding problem of everyday living. Hard water makes soap curds; it rings the bathtub; it soils laundry; it forms ruinous scale in the boilers of industrial plants—all because it contains dissolved limestone and other “hardness-forming” minerals, such as calcium and magnesium sulphates.
PopularScience_19471101_0151_005_0129.xml
article
124
124,125,126,127
PSM Features
[no value]
Printing Photos Inside Glass
A sun lamp, an oven and a negative impress permanent pictures on metal particles in Corning’s photo-glass.
[no value]
[no value]
Alton L. Blakeslee
GLASS with a "memory” is the latest creation of the 6,000-year-old art of glassmaking. This wonder glass captures lifelike pictures, in colors, inside any object into which the glass is fashioned. There they are held forever safe from bending, scratching, fading or weathering—everything but outright breakage.
PopularScience_19471101_0151_005_0130.xml
article
128
128
Science News
[no value]
Turbines For Autos?
Mighty power of midget models, now becoming available, foreshadows era of new uses for jet power plants.
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WILL gas turbines, new standard for military aircraft and the coming thing for civilian planes, drive automobiles next? High horsepower-to-weight ratio afforded by big jet engines interests automotive engineers in new and smaller power packages.
PopularScience_19471101_0151_005_0131.xml
article
129
129,130
Science at Work
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Multitude Fed Without Soil
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[no value]
[no value]
[no value]
And when it was evening, His disciples came to Him, saying: This is a desert place . . . send the multitude away. . . . But Jesus said unto them: They need not depart, give them to eat. MATT, XIV: 15, 16. On Ascension Island, Army Air Forces base in the Atlantic Ocean, there was no soil at all, but a multitude was fed fresh vegetables from hydroponic gardens.
PopularScience_19471101_0151_005_0132.xml
article
131
131
Inventions
[no value]
I'd like to see them make...
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[no value]
[no value]
[no value]
Heated Steering Wheel. To warm the hands of those who prefer to drive in winter without gloves, Mrs. John Hallacy, of Joplin, Mo., would like to see heating coils embedded in the steering wheel. R. R. Safety Signal. A second light of a different color to signal the approach of another train after one has already passed a crossing would reduce accidents, says George A. Budd, of Clearfield, Utah.
PopularScience_19471101_0151_005_0133.xml
article
132
132,133
PSM Features
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Toys and Ideas Fill Kids' Rumpus Room
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A MODEL playroom—a child’s dream world from floor to ceiling—has been designed by architect Joseph Aronson for the American Toy Institute, research division of Toy Manufacturers of U.S.A., Inc. The idea of the 12by 18-foot model room is to get the most out of maximum play area in minimum space in a way that the average home owner can duplicate, either in a whole room or in a corner of a bedroom. The model emphasizes elevated play areas and ample, easy-to-reach toy-storage space.
PopularScience_19471101_0151_005_0134.xml
article
134
134,135
Radio & Electricity
[no value]
Signal Corps’ New Tricks
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[no value]
[no value]
Improving Nazi Radar. The Army Signal Corps has big plans for this huge “Wurzburger” radar, built by the Germans. At the Evans Signal Laboratory, Belmar, N. J., the parabolic antenna will be replaced by an even larger one to shoot signals to the moon.
PopularScience_19471101_0151_005_0135.xml
article
136
136
Home Mechanics & Handicraft
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CRAFTWORK PROJECTS OF THE MONTH
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Wandering earrings will stay closer to home if you make your wife this "tree" for her dressing table. If she clips her earrings to the lucite leaves that sprout from the duralumin trunk, there's less chance one will be lost, and she’ll also find it easier to pick out just the right pair to go with her ensemble.
PopularScience_19471101_0151_005_0136.xml
article
137
137
Science at Work
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New Typewriter Conquers Chinese Symbols
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FOR the first time since the development of modern Chinese script more than 16 centuries ago, a way has been found to copy quickly all of the language’s thousands of complex characters. It is the unique “Mingkwai” (clear and quick) typewriter, invented by Lin Yutang, Chinese author.
PopularScience_19471101_0151_005_0137.xml
article
138
138,139,140,141
[no value]
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Steel Muscles Snub Train Bumps On Newest Trains
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YOU won’t be tossed around when you ride a train fitted with a new automatic “ride smoother.” You won’t feel the bumps. And your coffee will stay level in your cup even if the engineer takes a curve too fast. Automatic screw jacks will tilt the car’s body just enough to provide the right amount of bank.
PopularScience_19471101_0151_005_0138.xml
article
142
142
Inventions
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Bricklaying Speeded Up
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A BRITISH inventor has come up with an aid to high-speed bricklaying that should help solve his country’s housing shortage. It is a metal guide that replaces the present length of line used to make sure that all angles of the wall are correct.
PopularScience_19471101_0151_005_0139.xml
article
142
142
Radio & Electricity
[no value]
Tiniest Tube Paves Way For Wrist-Watch Radio
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AT RIGHT is shown the comparative sizes of a wrist watch and the new miniature radio transceiver being developed by the U. S. Bureau of Standards. The set both sends and receives short waves and also picks up standard radio broadcasts. It was designed around the tiny radio tube, not much larger than a grain of rice, that is shown actual size in inset at lower left.
PopularScience_19471101_0151_005_0140.xml
article
143
143
Science News
[no value]
Radar Calls the Weather
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"IT IS now 12 o’clock noon. At two, a heavy thunder shower will soak the racetrack, but should end before the first race at 2:30. The storm will not hit the ball park or bathing beaches.” That is the kind of pin-point weather prediction Canadians may soon receive from a new system being developed by the Dominion’s Defense Research Board.
PopularScience_19471101_0151_005_0141.xml
article
144
144,145
Science at Work
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"Plow Proving Grounds" Improve Farmers' Tools
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WITH special machines and a variety of soil samples, federal farm experts can reproduce almost any farm in the Southeast right in their own acre-sized back yard at Auburn, Ala. Here the U. S. D. A.’s Tillage Machinery Laboratory, one of the first of its kind, is learning just what happens when a farm implement slices through the soil.
PopularScience_19471101_0151_005_0142.xml
article
146
146,147,148,149,150
PSM Features
[no value]
Building A House an Hour
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[no value]
[no value]
Hartley E. Howe
WHEN the 7:30 whistle blows each morning at a cluster of grey shops just outside Baltimore the yard is packed with the makings of houses—steel joists, lumber, siding, shingles. By 11 o’clock the top layers of these piles have been built into four walls and a roof.
PopularScience_19471101_0151_005_0143.xml
article
151
151
Science at Work
[no value]
Jets Are Jacks Of Many Trades
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WHEN already overworked jets aren’t pushing airplanes, speedboats or racing cars, they are assigned to less glamorous jobs in Britain. On the River Thames, dredging experts are experimenting with an aircraft jet engine to blast away dock-blocking mudbanks.
PopularScience_19471101_0151_005_0144.xml
article
152
152,153
AIDS TO MODERN LIVING
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AIDS TO MODERN LIVING
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Cap Has Pouring Spout. With these new plastic caps, a housewife can make her own canister set from ordinary canning jars. The cap includes a pouring spout which, when not in use, pushes down flush with the top. Made by Jiggs-Penny Corp., New York, the caps sell for 25 cents each.
PopularScience_19471101_0151_005_0145.xml
article
154
154,155
Automobiles
[no value]
AUTO IDEAS
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[no value]
[no value]
[no value]
Eliminates Drafts. Even though the front window of a car is wide open, a plastic device made by the NuWorld Products Company, Huntington Beach, Calif., deflects the wind outward, protecting rear-seat passengers from drafts. Installed inside the window by three clips, it does not interfere with normal window operation.
PopularScience_19471101_0151_005_0146.xml
article
156
156,157
Automobiles
[no value]
Rtivetless Brake Linings Last Longer
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[no value]
IF YOUR car should require new brake linings, there is a good chance that the mechanic may suggest bonding them to the shoes, for an increasing number of repair shops are offering such service. By this relatively new process, linings are cemented and heat-bonded on the shoes, eliminating the traditional rivets.
PopularScience_19471101_0151_005_0147.xml
article
158
158,159
Automobiles
[no value]
Curing Auto Door Ailments
[no value]
[no value]
[no value]
Frank McCarty
CAR doors are usually the first things to give trouble when a body begins to wear. They have to be slammed to stay shut. Hinges become sprung. Window glass will not raise and lower easily or far enough. Rattles distract the driver, and latches that hold doors insecurely invite injury to passengers or passers-by.
PopularScience_19471101_0151_005_0148.xml
article
160
160,161,162
Automobiles
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Gus Spots Double Trouble
Anyone could see the fuel mixture was too rich–but why? Cleaning and adjusting the carburetor made no difference.
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[no value]
Martin Bunn
STAN HICKS nudged his employer, "Here’s Old Man Trouble himself!" he said. Gus Wilson looked up. The driver was just getting out of an old but well-kept sedan he’d stopped in the center of the Model Garage shop floor. His thin face was creased with chronic dissatisfaction.
PopularScience_19471101_0151_005_0149.xml
article
163
163
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[no value]
Mechanics and Handicraft
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0150.xml
article
164
164,165
Home Mechanics & Handicraft
[no value]
Guest Tray and Mug Hammered on Wood Form
[no value]
[no value]
[no value]
Morton Bartlett
James Harris
FORMED from soft copper and given an antique finish, a set of these individual serving trays and matching mugs or cups makes a gift that should please any hostess. Make the tray mold or form of a 2" by 10" by 12" block of hardwood, carving or routing the recesses to a uniform depth of about ½".
PopularScience_19471101_0151_005_0151.xml
article
166
166,167
Home Mechanics & Handicraft
[no value]
Old and New Tuckaway Tables Fold Flat
[no value]
[no value]
[no value]
Joseph Aronson
WHEN an antique English folding table of the type called a “tuckaway” recently came into my hands, the method of construction and operation seemed so simple and effective that I decided to make a modern version. The original is styled in the Jacobean tradition. Such pieces may date anywhere from 1600 to 1800. Of heavy dark oak, the legs are identical turnings made into two gates by rectangular stretchers, notched into one another to fold compactly.
PopularScience_19471101_0151_005_0152.xml
article
168
168
Home Mechanics & Handicraft
[no value]
Earring Tree Turned front Dural
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[no value]
[no value]
[no value]
STANDING on a dressing table, this earring holder looks like a tiny bejeweled Christmas tree, and her ladyship is sure to forgive you for locking yourself in the workshop for the few nights that it will require to complete. To see it in full color, turn to page 136.
PopularScience_19471101_0151_005_0153.xml
article
169
169
Home Mechanics & Handicraft
[no value]
Model Tank Packs a Wallop
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[no value]
[no value]
[no value]
EQUIPPED with four electric motors, this control-line tank brings a remarkable note of realism to living-room war games in the home of Alfred J. Brosseau, of Cambridge, Mass., who spent a year and a half building it. Measuring 6" by 12", the model can imitate any action of its big brothers.
PopularScience_19471101_0151_005_0154.xml
article
170
170,171,172,173
Home Mechanics & Handicraft
[no value]
Marconi-Rigged Kite Soars in a Breeze
With hollow spars and stunsails for light airs, the Flying Cloud will outperform conventional box kites.
[no value]
[no value]
W. Mack Angus
HERE’S a kite that will win all honors in a breeze—or in practically still air, for that matter. It is called the Flying Cloud and, like that famous clipper ship, it performs superbly when the wind is up. In a good blow it uses just its working sails, but it can also set auxiliary studding sails, or “stunsails,” to sustain it in light air.
PopularScience_19471101_0151_005_0155.xml
article
174
174
Home Mechanics & Handicraft
[no value]
Fisherman and Boat Ride Waves on Pull Toy
[no value]
[no value]
[no value]
JAMES J. O'HARA
LOTS of action in a pull toy makes a hit with the kids. Here’s one that more than fills the bill, for the little white boat rocks and the fisherman pulls the fish out of the water as the toy is pulled along. Cut the top of the base from ¼" plywood, drilling a hole and starting the slot with a coping saw and finishing with a keyhole saw.
PopularScience_19471101_0151_005_0156.xml
article
175
175
Home Mechanics & Handicraft
[no value]
Lighted Tree Decorates Door for Yule Season
[no value]
[no value]
[no value]
MICHELE DE SANTIS
ILLUMINATED by a set of standard outdoor Christmas lights, this painted ornament will provide a cheerful decoration for your door during the holiday season. Its size may be varied to suit the door. Lay out and saw the tree and pot from outdoor plywood, composition board, or similar material.
PopularScience_19471101_0151_005_0157.xml
article
175
175
[no value]
[no value]
Polished Brass Key Serves as Lapel Ornament
[no value]
[no value]
[no value]
WALTER E. BURTON
OLD brass keys may be turned into attractive lapel ornaments or brooches. Such keys often are available for a few cents in secondhand stores. First, clean up and polish the brass. One way of doing this is to use a cloth buffing wheel charged with rouge.
PopularScience_19471101_0151_005_0158.xml
article
176
176,177,178
Mechanics & Shopcraft
[no value]
Let Your Drill Press Do It
[no value]
[no value]
[no value]
Elma Waltner
IF YOU use a drill press only for making holes in wood or metal, you are not getting full value from the machine. A drill press is, in fact, a versatile tool well suited to a wide variety of operations that will speed up and make much easier numerous jobs around a shop.
PopularScience_19471101_0151_005_0159.xml
article
179
179
WHAT'S YOUR I.Q.?
[no value]
WHAT'S YOUR I.Q.?
[no value]
[no value]
[no value]
[no value]
It Burns Me Up to read about people who set fire to good mattresses by smoking in bed. But I like to smoke in bed. Not caring to burn up, I got the base of an old gooseneck desk lamp, a two-part cigarette holder, and some plastic tubing. The tubing runs through the lamp-cord holes in the base.
PopularScience_19471101_0151_005_0160.xml
article
180
180
Home Mechanics & Handicraft
[no value]
Turned Bowl Serves Bonbons to Music
[no value]
[no value]
[no value]
DORIS ALLER
WHEN you pass the candy in this turned bonbon bowl, a Swiss music-box movement strikes up a tinkling tune. The music stops when the bowl is returned to the table. It’s shown in color on page 136. Mounted on a sounding board, the music movement is concealed in a space hollowed out of the base of the bowl.
PopularScience_19471101_0151_005_0161.xml
article
181
181
Home Mechanics & Handicraft
[no value]
Three-Place Bobsled
[no value]
[no value]
[no value]
HI SIBLEY
BEFORE the snows come this winter, why not make this bobsled ready for the first fall? Carrying up to three persons, it’s sprung on all four runners to give a smooth ride whatever the speed. For the springs, select a pair of long main leaves from any light make of car at a wrecking yard.
PopularScience_19471101_0151_005_0162.xml
article
182
182,183
KEEPING the HOME SHIPSHAPE
[no value]
KEEPING the HOME SHIPSHAPE
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0163.xml
article
184
184
For Boats and Boating
[no value]
For Boats and Boating
[no value]
[no value]
[no value]
[no value]
Pontoons Stabilize Boat. An outrigger unit consisting of two pontoons on telescoping steel arms is made by the Lee-Neal Company, Minneapolis, Minn. The rubberized-fabric pontoons are easily inflated by mouth, and clamps attach the arms to the boat.
PopularScience_19471101_0151_005_0164.xml
article
185
185
Home Mechanics & Handicraft
[no value]
Hand-Hammered Slave Bracelet
[no value]
[no value]
[no value]
W. A. CONWAY
ALTHOUGH this bracelet has the heavy, massive appearance of the traditional slave type, it nevertheless is comfortable to wear because the hollow construction of the decorative balls makes it quite light. The body requires a 2" by 6½" piece of 18-ga.
PopularScience_19471101_0151_005_0165.xml
article
186
186,187
Mechanics & Shopcraft
[no value]
Electric Drill Creates Novel Metal Finishes
[no value]
[no value]
[no value]
R. J. DECRISTOFORO
METAL projects or objects already in use in the home may often be improved in appearance by finishing the metal in various effects and patterns. An electric drill or drill press and a few simple accessories are all the equipment needed for such work.
PopularScience_19471101_0151_005_0166.xml
article
187
187
Mechanics & Shopcraft
[no value]
Jar Ring Clamps Polishing Pad for Drill Press
[no value]
[no value]
[no value]
EDWIN M. LO
A THREADED jar ring clamps the pad of steel wool used in this efficient polishing head. For the pad assembly, turn two disks from ¾" plywood, one 2¾" in diameter and the other 2". Hollow the face of the larger to allow space for the steel-wool pad.
PopularScience_19471101_0151_005_0167.xml
article
187
187
Mechanics & Shopcraft
[no value]
Small Cutter Bevels Edges on Irregular Shapes
[no value]
[no value]
[no value]
HERBERT PFISTER
GUIDED by the pin, this drill-press cutter follows an edge on irregular work, beveling as it goes. It was mothered by necessity while I was making brass escutcheon plates. The cutter may be made from a 1" length of ¼" or 5/16" drill rod. Chuck in the lathe and drill a hole one size smaller than the drill shank you intend to use as the pin.
PopularScience_19471101_0151_005_0168.xml
article
188
188,189
HANDICRAFT FOR CHRISTMAS
[no value]
Table Mill Grinds Fresh Pepper
[no value]
[no value]
[no value]
PAUL ALLER
PEPPERCORNS, the hard little seeds from which fresh, pungent pepper is obtained, can be ground directly over your plate with this traditional table mill. Mount a 2¼" maple turning square on the screw center, support it with the dead center, and rough-turn the outside.
PopularScience_19471101_0151_005_0169.xml
article
189
189
Home Mechanics & Handicraft
[no value]
Sturdy Footstool Will Bring You Solid Comfor
[no value]
[no value]
[no value]
EDWARD R. LUCAS
STURDY and decorative, this stool offers an excellent one-evening project. If necessary, it may be built entirely with hand tools. All pieces are cut from 1" stock. Shape the two endpieces to the freehand curves shown with a coping saw, making them about 12" long.
PopularScience_19471101_0151_005_0170.xml
article
190
190,191,192
Home Mechanics & Handicraft
[no value]
Homemade "Maxwell's Demon" Blows Hot and Cold
[no value]
[no value]
[no value]
[no value]
THE magic Hilsch tube that imitates Maxwell’s imaginary demon by blowing hot and cold at the same time (PSM, May '47, p. 144) can be made at your own workbench and operated at the nearest gas station. A simplified version was designed for Popular Science readers at the RCA Transmitter Laboratory, Rocky Point, N. Y., where research on this curiosity of thermodynamics goes on.
PopularScience_19471101_0151_005_0171.xml
article
193
193,194
NEW TOOLS
[no value]
NEW TOOLS
[no value]
[no value]
[no value]
[no value]
Milling on a Lathe. Precision boring and milling can be performed on virtually any small machine lathe with a new adapter being manufactured by the Qualified Gage Company, of Berkley, Mich. Providing for both horizontal and vertical movement of the work, the adapter consists of two main parts.
PopularScience_19471101_0151_005_0172.xml
article
194
194,195
Mechanics & Shopcraft
[no value]
NEW SHOP IDEAS
[no value]
[no value]
[no value]
[no value]
Cutting a Blind Slot. Where no great precision is called for and the work will tolerate bending, slots can be cut much faster with a hacksaw than by drilling and filing. Simply bend the piece as above. To remove the waste strip, use a chisel or drill a hole at each end.
PopularScience_19471101_0151_005_0173.xml
review
196
196
HOBBY SHOPPING
[no value]
HOBBY SHOPPING
[no value]
the Rice Engineering Co.
[no value]
the Rice Engineering Co.
Lure Holds Live Bait
Lure Holds Live Bait. Imagine the surprise of a fish that comes to this lure. The minnow is alive, but is protected inside a transparent plastic casing that magnifies it to appetizing proportions. Made by the Rice Engineering Co., Detroit, Mich., the lure has two triple hooks and a removable head to permit insertion of the bait.
the Rice Engineering Co.
[no value]
Plane Made of Magnesium. Built of magnesium, this model plane has the lightness of wood with far greater strength. It is furnished in kit form by Rokwell Industries, Inc., of Clayton, Mo. Wing, fuselage, and control surface sections are preformed.
the Rice Engineering Co.
Aids Hobbyists
$16
Speed Changer Aids Hobbyists. Designed to increase or decrease shaft speeds in small power devices, this miniature gear box is available in various gear ratios. Built by the Metron Instrument Company, Denver, Colo., it has concentric drive shafts mounted in ball bearings. Power passes from the input shaft through spur gears to a countershaft, thence through another set of gears to the output shaft. Intermediate gears run in graphitic plastic bearings. The price runs from $16 to $18.50, depending on the ratio.
the Rice Engineering Co.
[no value]
$3.50
You Needn’t Yell "Fore". Firmly tethered to a stake driven into the ground, this golf ball never gets away. You just step up, smack it, and let it swing—but better keep out of the way. Manufactured by the Prac-Tee Company, Dayton, Ohio, the outfit is designed for backyard practice. It retails for around $3.50.
the Rice Engineering Co.
[no value]
$7.50
Carbon Dioxide Runs Engine. Standard carbon dioxide cartridges power a model airplane engine produced by the Herkimer Tool and Model Works, Inc., of New York. Weighing less than ¾ oz., the engine has a finned steel cylinder, can be adjusted to run up to 60 sec. on a charge, and swings a 7" propeller with ease. It’s suitable for model planes up to 140 sq. in. wing area. The engine sells for about $7.50.
[no value]
[no value]
PopularScience_19471101_0151_005_0174.xml
article
197
197
Photography
[no value]
Water Power Agitates Roll-Film Developing Tank
[no value]
[no value]
[no value]
[no value]
WITH this water-driven agitator, you can avoid the tedious job of agitating a roll-film tank by hand. A revolving crank on the water wheel moves a metal arm, bolted to the tank knob, back and forth through an arc by a pivoted linkage. Solder a can upside down against the side of another large enough to hold the tank.
PopularScience_19471101_0151_005_0175.xml
article
197
197
Photography
[no value]
Reflex Focusing Screen Checked by Simple Method
[no value]
[no value]
[no value]
H. R. HEYDORF
WHETHER the focusing screen of a single-lens reflex camera is accurate may be checked by placing the camera about 36" from an ink-lined cardboard sheet, stopping the lens down to f/8, and installing a back focusing screen in the exact film plane.
PopularScience_19471101_0151_005_0176.xml
article
198
198,199,200,201
Photography
[no value]
Homemade Speed Flash Makes Time Stand Still
[no value]
[no value]
[no value]
Michael S. Spacek
HOW often have you sighed over those fast-action shots that weren’t quite fast enough? How many times have ordinary synchronized flash and a shutter speed of 1/500 proved sluggish when the negative was developed? Well, you can capture the briefest part of a movement and get fine, clear detail of people or objects no matter how rapidly they may be shifting.
PopularScience_19471101_0151_005_0177.xml
article
202
202
Photography
[no value]
POTO IDEAS AND EQUIPMENT
[no value]
[no value]
[no value]
[no value]
Diffusers Snap On. Made of a nonwoven, plasticlike material, this diffuser has a strong elastic edge that permits it to be quickly snapped on or off the reflector. When not in use, it can be crumpled into small space and stuffed into the pocket or camera case.
PopularScience_19471101_0151_005_0178.xml
article
203
203
Photography
[no value]
Attachments for Copying
[no value]
[no value]
[no value]
[no value]
Originated in Scotland, these new Stewartry copying attachments are distributed in the United States by Caprod, Ltd., of New York. Designed for use with Leica, Contax, and cameras of similar type, the attachments include a clamping arm, a focusing screen, and various extension tubes for work at close range.
PopularScience_19471101_0151_005_0179.xml
article
204
204,205,206,207
Radio & Electricity
[no value]
Building a Multimeter
[no value]
[no value]
[no value]
Gilbert Sonbergh
BEFORE you start to build your own multitester, look over the fundamental data on the relationship between volts, ohms, and amperes given in the previous installment. With this information you can design a meter for any special purpose, adapt spare parts to suit your circuit, or build a general-utility multimeter for radio and electrical checking.
PopularScience_19471101_0151_005_0180.xml
article
208
208
Radio & Electricity
[no value]
NEWS IN ELECTRONICS
[no value]
[no value]
[no value]
[no value]
'Scope Tubes Plug In. Removing the light shield on the face of this new RCA oscilloscope permits quick interchange of the cathode-ray tube through the front panel. Tubes with different degrees of phosphor persistence may be switched in a matter of seconds, thus giving the single oscilloscope greater versatility.
PopularScience_19471101_0151_005_0181.xml
article
209
209,210
Radio & Electricity
[no value]
Boy’s Radio Lets Dad Enjoy His
[no value]
[no value]
[no value]
Clinton E. Clark
EVERYONE in the family will enjoy this little two-tube headphone set. Junior can listen to all the programs especially meant for him, and Pop and Mom will escape the nerve-shattering tommy guns and thundering herds. Pretuning makes things easy, for any young listener can turn on the switch and set the pointer knob to his choice of three stations.
PopularScience_19471101_0151_005_0182.xml
article
210
210
Radio & Electricity
[no value]
Simple Guard Protects Needle
[no value]
[no value]
[no value]
MAX ALTH
PHYSICAL abuse is a frequent cause of crystal-pickup failure. This may be avoided by installing a permanent-needle type of cartridge with a guard or by building a guard for your present pickup. An effective guard may be made from a ½" by 1¼" strip of shim brass .005" thick.
PopularScience_19471101_0151_005_0183.xml
article
210
210
Radio & Electricity
[no value]
Tagging Wires Saves Time
[no value]
[no value]
[no value]
[no value]
CONSIDERABLE time may be saved and possible errors eliminated by using price tags to mark the wires when making replacement of radio parts. During reassembly, the tags will show exactly where each wire goes. By erasing the pencil marks, the tags may be used many times.
PopularScience_19471101_0151_005_0184.xml
article
211
211
CRAFTSMEN at WORK
[no value]
CRAFTSMEN at WORK
[no value]
[no value]
[no value]
[no value]
Wagon Like Dad’s. This coaster wagon, built by A. R. Barringer, of Ruthven, Iowa, for his children, is patterned after an actual farm trailer. Aside from a few bolts, the running gear was made from pieces of scrap iron. Radius rods cut from a model T Ford serve the same purpose on the wagon.
PopularScience_19471101_0151_005_0185.xml
article
212
212,213
HOME EXPERIMENTS
[no value]
How and Why Things Balance
[no value]
[no value]
[no value]
[no value]
Center of Oscillation. If you weight a curtain rod by winding wire around it near one end, will it be easier to balance vertically with the weighted end at the top or at the bottom? If you say the bottom, you are wrong. Although it is true that an object is more stable when its center of gravity is near the bottom, another factor comes into play in this case.
PopularScience_19471101_0151_005_0186.xml
article
214
214
Mechanics & Shopcraft
[no value]
Knife-Edge Bandsaw Blade Cuts Bubber and Cork
[no value]
[no value]
[no value]
[no value]
VARIOUS uses may be found for a discarded bandsaw blade ground to a knife edge. It is particularly good for cutting such materials as sponge rubber and cork. For grinding, mount the blade on the saw, taking care that it is adequately tensioned and tracks properly. Any grinding wheel from ¾" to 1" wide that can be set on the table will do. Mount it to grind a bevel of approximately 10 deg. on each side of the blade.
PopularScience_19471101_0151_005_0187.xml
article
214
214
Mechanics & Shopcraft
[no value]
Two Special Gadgets Ease a Plumber’s Work
[no value]
[no value]
[no value]
H. A. BARBIERo
HERE are two homemade gadgets that I have used for many years in my work as a plumber. They should also prove useful around the home when the need arises. The first is a basin overflow stop. When it is desired to use a plunger pump to clear a drain, the T-head of the bolt is inserted in the overflow opening, given a quarter turn, and the wing nut is then screwed against the brass plate.
PopularScience_19471101_0151_005_0188.xml
article
214
214
Home Mechanics & Handicraft
[no value]
Swinging Door on Dog House Always Closes Again
Suction Cups Prevent Tipping
[no value]
[no value]
H. F. HAGELSTON
THERE are no springs on this small swinging door for a dog house, yet it always returns to the closed position after the dog passes in or out. The secret lies in the fact that the upper pin is ½" farther from the edge of the door than the lower pin.
PopularScience_19471101_0151_005_0189.xml
article
215
215
WHAT'S WRONG?
[no value]
WHAT'S WRONG?
[no value]
[no value]
[no value]
[no value]
PLASTICS require procedures quite unlike those used for other materials employed by craftsmen. How many mistakes can you spot here? There are three in storing, three in assembling, one in sanding, two in polishing. Check with the answers printed upside down below.
PopularScience_19471101_0151_005_0190.xml
article
215
215
Home Mechanics & Handicraft
[no value]
Phonograph Alarm Wakes Sleeper Up to Music
[no value]
[no value]
[no value]
G. E. HARRINGTON
Music has charms to soothe the savage breast—particularly in the morning. Hence, I start my day with a soothing melody. Each night, I wind my phonograph and rest the tone arm on a favorite record. Then I slip a sewing needle under the felt of the turntable, slip over it a paper clip tied to a piece of string, tie the string to the wind key of a silenced alarm clock, tie a second clip to another string, slip it over the starting lever, and tie this string also to the wind key.
PopularScience_19471101_0151_005_0191.xml
article
216
216,217,218,219
PSM Features
[no value]
Sodium Carbonate Earns Its Salt
[no value]
[no value]
[no value]
Kenneth M. Swezey
NEXT to sodium chloride (common table salt), sodium carbonate is the most widely used of all sodium compounds. More than 1,500,000 tons are consumed yearly in the United States as the starting point for compounding other sodium chemicals.
PopularScience_19471101_0151_005_0192.xml
article
220
220
Home Mechanics & Handicraft
[no value]
Kitchen Cupboard Has Disappearing Vegetable Bin
[no value]
[no value]
[no value]
R. HOPPOUGH
BESIDES holding its quota of cans, jars, and bottles, this handy kitchen cabinet has a tilting vegetable bin that can be opened or shut with one hand, stays in either position, and lifts out for cleaning. The cupboard shown was built from part of an old bookcase.
PopularScience_19471101_0151_005_0193.xml
article
220
220
[no value]
[no value]
Clip Holds Appliance Plug
[no value]
[no value]
[no value]
W. B. EAGAN
IF A plug must be detached from a wall socket when an electrical appliance is not in use, this clip will make it unnecessary to stoop down each time you want to use the appliance. Notch a piece of metal to receive the cord, bend to a 90-degree angle, drill a hole, and mount on the socket plate by the plate screw.
PopularScience_19471101_0151_005_0194.xml
article
220
220
Mechanics & Shopcraft
[no value]
Jar Stores Composition Wood
[no value]
[no value]
[no value]
A. S. JAMIESON
PLASTIC composition wood bought in cans usually dries out no matter how tightly the top is pressed on. As a solution, I now store the can inside a large-mouth glass jar with a screw top, turning down the top against a gasket made from oiled paper.
PopularScience_19471101_0151_005_0195.xml
article
221
221
Mechanics & Shopcraft
[no value]
Workbench Trough Is Handy
[no value]
[no value]
[no value]
FRANK SHORE
SET in a recess cut into the corner of the workbench, a metal trough will be found convenient as an ash tray or to hold small parts. One of the troughs used on sliding doors is good for this.
PopularScience_19471101_0151_005_0196.xml
article
221
221
[no value]
[no value]
Test Tubes May Be Repaired
[no value]
[no value]
[no value]
JOHN L. STORY
TEST tubes that have broken near the top may be returned to use by the method illustrated below. First, heat the jagged edges and flare them out by pressing with the leather-punch blade of an old jackknife or a similar instrument. After this, heat each sharp point to an orange color and trim off with an old pair of scissors.
PopularScience_19471101_0151_005_0197.xml
article
221
221
Home Mechanics & Handicraft
[no value]
Spring Keeps T-Square Square
[no value]
[no value]
[no value]
JOSEPH F. GRECE
ANY T-square can be converted into a parallel ruler with the attachment illustrated at the right. It also allows a draftsman to have both hands free, for the T-square is held firmly against the board. It may be made from light wood, metal, or plastic, the dimensions being suited to the thickness and width of the particular T-square.
PopularScience_19471101_0151_005_0198.xml
article
221
221
Home Mechanics & Handicraft
[no value]
Fan Heats Coal Range Quickly
[no value]
[no value]
[no value]
E. V. COLLINS
THE coal range in the kitchen of our country house did not draw well, probably because the chimney is a bit too low. Some sort of forced-draft system was obviously the answer, but since the house is not electrified and I couldn’t locate a satisfactory 6-volt blower, I was stumped for a time.
PopularScience_19471101_0151_005_0199.xml
article
222
222,223
Home Mechanics & Handicraft
[no value]
Handy Nail-Polish Hints
[no value]
[no value]
[no value]
[no value]
ON THE beautiful hands of a woman or in the skilled hands of a man, nail polish can be one of the most useful as well as decorative of household items. In addition to the colorless variety and the myriad shades of red, it comes in blue, green, and other colors.
PopularScience_19471101_0151_005_0200.xml
article
224
224,228
FOR EASIER FARMING
[no value]
FOR EASIER FARMING
[no value]
[no value]
[no value]
[no value]
Grain Unloaded by Power. Designed to fit all 38" wagon beds, an unloader made by Piper-Odell, of Princeton, Ill., includes a V-type false bottom with an auger running its entire length. A direct drive from the tractor power take-off turns this augur, which in turn drives another auger in the elevator tube.
PopularScience_19471101_0151_005_0201.xml
advertisement
225
225
[no value]
[no value]
RAY-O-VAC COMPANY: LEAK PROOF
[no value]
RAY-O-VAC COMPANY
LEAK PROOF
[no value]
[no value]
PopularScience_19471101_0151_005_0202.xml
advertisement
226
226
[no value]
[no value]
Gillette Safety Razor Co.
[no value]
Gillette Safety Razor Co.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0203.xml
advertisement
227
227
[no value]
[no value]
Eastman Kodak Company: KODASLIDE PROJECTOR
[no value]
Eastman Kodak Company
KODASLIDE PROJECTOR
[no value]
[no value]
PopularScience_19471101_0151_005_0204.xml
advertisement
228
228
[no value]
[no value]
NICHOLSON FILE CO.
[no value]
NICHOLSON FILE CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0205.xml
advertisement
229
229
[no value]
[no value]
Champion Spark Plug Company
[no value]
Champion Spark Plug Company
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0206.xml
advertisement
230
230
[no value]
[no value]
Advertisements
[no value]
ATLAS PRESS CO.
DRILL PRESSES
ATLAS PRESS CO.
MILLING MACHINES
[no value]
[no value]
PopularScience_19471101_0151_005_0207.xml
advertisement
231
231
[no value]
[no value]
Advertisements
[no value]
POWER KING TOOL CORP.
PK SPINDLE SHAPER
POWER KING TOOL CORP.
PK BAND SAW
[no value]
[no value]
PopularScience_19471101_0151_005_0208.xml
advertisement
232
232
[no value]
[no value]
CROTON AQUAMATIC
[no value]
CROTON AQUAMATIC
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0209.xml
advertisement
232
232
[no value]
[no value]
GENERAL ELECTRIC: Exposure Meter
[no value]
GENERAL ELECTRIC
Exposure Meter
[no value]
[no value]
PopularScience_19471101_0151_005_0210.xml
advertisement
232
232
[no value]
[no value]
SHAW MFG. CO.
[no value]
SHAW MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0211.xml
advertisement
233
233
[no value]
[no value]
The Casite Corporation
[no value]
The Casite Corporation
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0212.xml
advertisement
234
234
[no value]
[no value]
PERFECTION STOVE COMPANY
[no value]
PERFECTION STOVE COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0213.xml
advertisement
235
235
[no value]
[no value]
ARGUS, INCORPORATED
[no value]
ARGUS, INCORPORATED
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0214.xml
advertisement
236
236
[no value]
[no value]
PICTORIAL FILMS, Inc.
[no value]
PICTORIAL FILMS, Inc.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0215.xml
advertisement
236
236
[no value]
[no value]
UNIVERSAL TOOL CO.
[no value]
UNIVERSAL TOOL CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0216.xml
advertisement
236
236
[no value]
[no value]
TAFT MARINE WOODCRAFT: PLYWOOD BOAT kITS
[no value]
TAFT MARINE WOODCRAFT
PLYWOOD BOAT kITS
[no value]
[no value]
PopularScience_19471101_0151_005_0217.xml
advertisement
236
236
[no value]
[no value]
ECONOMY VALVE SEAT CO.
[no value]
ECONOMY VALVE SEAT CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0218.xml
advertisement
237
237
[no value]
[no value]
Advertisements
[no value]
THE ELECTRIC AUTO-LITE COMPANY
Hot plug
THE ELECTRIC AUTO-LITE COMPANY
Cold plug
[no value]
[no value]
PopularScience_19471101_0151_005_0219.xml
advertisement
238
238
[no value]
[no value]
Spiral Mfg. Corporation: Chart-O-Matic
[no value]
Spiral Mfg. Corporation
Chart-O-Matic
[no value]
[no value]
PopularScience_19471101_0151_005_0220.xml
advertisement
239
239
[no value]
[no value]
THE ANDERSON COMPANY: ANCO CLEAR-FLEX
[no value]
THE ANDERSON COMPANY
ANCO CLEAR-FLEX
[no value]
[no value]
PopularScience_19471101_0151_005_0221.xml
advertisement
240
240
[no value]
[no value]
GENERAL MOTORS CORPORATION: AC Fuel Pump
[no value]
GENERAL MOTORS CORPORATION
AC Fuel Pump
[no value]
[no value]
PopularScience_19471101_0151_005_0222.xml
advertisement
240
240
[no value]
[no value]
FOREDOM ELECTRIC CO.
[no value]
FOREDOM ELECTRIC CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0223.xml
advertisement
240
240
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0224.xml
advertisement
240
240
[no value]
[no value]
PUBLIC SPORT SHOPS
[no value]
PUBLIC SPORT SHOPS
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0225.xml
advertisement
241
241
[no value]
[no value]
The Dumore Company
[no value]
The Dumore Company
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0226.xml
advertisement
242
242
[no value]
[no value]
Milwaukee Dustless Brush Co.
[no value]
Milwaukee Dustless Brush Co.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0227.xml
advertisement
242
242
[no value]
[no value]
MILLHOLLAND SCREW PRODUCTS CORPORATION: TRU-TURN
[no value]
MILLHOLLAND SCREW PRODUCTS CORPORATION
TRU-TURN
[no value]
[no value]
PopularScience_19471101_0151_005_0228.xml
advertisement
242
242
[no value]
[no value]
R. H. SHEPPARD CO., INC.
[no value]
R. H. SHEPPARD CO., INC.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0229.xml
advertisement
243
243
[no value]
[no value]
HARLEY-DAVIDSON MOTOR CO.
[no value]
HARLEY-DAVIDSON MOTOR CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0230.xml
advertisement
244
244
[no value]
[no value]
WM. SCHOLLHORN CO.
[no value]
WM. SCHOLLHORN CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0231.xml
advertisement
244
244
[no value]
[no value]
IRELAND & VICE
[no value]
IRELAND & VICE
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0232.xml
advertisement
244
244
[no value]
[no value]
Advertisements
[no value]
WEBB PRODUCTS CO.
WOOD DOUGH
WEBB PRODUCTS CO.
SURFACING PUTTY
[no value]
[no value]
PopularScience_19471101_0151_005_0233.xml
advertisement
245
245
[no value]
[no value]
Advertisements
[no value]
DREMEL MANUFACTURING CO.
MOTO-SAW
DREMEL MANUFACTURING CO.
MOTO-TOOL
[no value]
[no value]
PopularScience_19471101_0151_005_0234.xml
advertisement
246
246
[no value]
[no value]
CASEIN COMPANY OF AMERICA: CASCOPHEN
[no value]
CASEIN COMPANY OF AMERICA
CASCOPHEN
[no value]
[no value]
PopularScience_19471101_0151_005_0235.xml
advertisement
246
246
[no value]
[no value]
GENERAL ELECTRIC
[no value]
GENERAL ELECTRIC
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0236.xml
advertisement
246
246
[no value]
[no value]
Patent Cereals Co.
[no value]
Patent Cereals Co.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0237.xml
advertisement
247
247
[no value]
[no value]
DELTA MANUFACTURING DIVISION: HOMECRAFT POWER TOOLS
[no value]
DELTA MANUFACTURING DIVISION
HOMECRAFT POWER TOOLS
[no value]
[no value]
PopularScience_19471101_0151_005_0238.xml
advertisement
248
248
[no value]
[no value]
THE SIMONIZ COMPANY
[no value]
THE SIMONIZ COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0239.xml
advertisement
248
248
[no value]
[no value]
FEDERAL MANUFACTURING & ENGINEERING CORP
[no value]
FEDERAL MANUFACTURING & ENGINEERING CORP
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0240.xml
advertisement
248
248
[no value]
[no value]
BESSEMER STEEL COMPANY OF AMERICA
[no value]
BESSEMER STEEL COMPANY OF AMERICA
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0241.xml
advertisement
248
248
[no value]
[no value]
The FRANKLIN GLUE CO.
[no value]
The FRANKLIN GLUE CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0242.xml
advertisement
249
249
[no value]
[no value]
Advertisements
[no value]
SPEEDWAY MFG. CO.
No. 117 PORTABLE BENCH GRINDER
SPEEDWAY MFG. CO.
GA KIT
[no value]
[no value]
PopularScience_19471101_0151_005_0243.xml
advertisement
250
250
[no value]
[no value]
E. C. ATKINS AND COMPANY
[no value]
E. C. ATKINS AND COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0244.xml
advertisement
250
250
[no value]
[no value]
BELL WATCH COMPANY, INC.
[no value]
BELL WATCH COMPANY, INC.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0245.xml
advertisement
250
250
[no value]
[no value]
PROGRESSIVE ELECTRONICS CO.
[no value]
PROGRESSIVE ELECTRONICS CO.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0246.xml
advertisement
250
250
[no value]
[no value]
D. W. ONAN & SONS INC.
[no value]
D. W. ONAN & SONS INC.
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0247.xml
advertisement
251
251
[no value]
[no value]
The HEATH COMPANY
[no value]
The HEATH COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0248.xml
advertisement
252
252
[no value]
[no value]
THE HOOVER COMPANY
[no value]
THE HOOVER COMPANY
[no value]
[no value]
[no value]
PopularScience_19471101_0151_005_0249.xml