File:Bell telephone magazine (1922) (14754876452).jpg

Identifier: belltelephonemag00vol2930amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

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xchange cable layout to get the maximum usage from existing cable pairs so as to defer installation of new cables. He has to be sure that cable pairs are available when needed for new telephone service—and also that these cable pairs are not idle for long after they are constructed. The proper balance between too much and too little cable plant is always with him, but the critical copper shortage has accentuated it now. When new The mechanic loosens up the valve telephone cables are required, he that is starting to stick, and the car possible for satisfactory transmission,ill order to stretch the short supplyof copper as far as he can. He givesthanks to the Bell Laboratories peo-ple who developed the new 500type telephone set, which has theincreased efficiency to enable him tostretch his copper into thinner con-ductors than he could use before. The Company car has been lop-ing a bit, so when the installer bringsit into the garage that evening he re-ports this to the garage mechanic.
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Bell Telephone Magazine AUTUMN Splicing short pieces of drop wire together makes usable lengths—and saves tons of material into the bargain is back to normal—thereby avoidingthe replacement of a valve made ofsteel which is critically short. The splicer is sealing a joint in thetelephone cable with hot solder. Hestarted working for the TelephoneCompany in 1946, after returningfrom World War II, and this is theway he was taught to wipe a cablejoint. It doesnt seem unusual tohim, but the old-timers could tell himthat it is a special type of splice, calledthe Victory Joint, which helped toconserve tin to win that war. Before then, the joints at the endsof the cable sleeves were wiped in arounded, ball-like shape and used alot of solder. When tin becamescarce, in 1942, a new technique wasdeveloped which used only a smallfillet of solder at the edge of thesleeve. It saved about 110,000pounds of tin yearly during the war—and several times that amountafter the war. Just because the war

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