File:Bell telephone magazine (1922) (14568509030).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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ing it last manymore years, saving thetime required to re-place the cross-arm andtransfer the wires andsaving the wood thatwould have been re-quired for a new arm. Sharpening a drill he has used for 11 years Short ends—pieces ofnew insulated drop wireleft over in the reel,other pieces of used I951 Conservation of Materials 193 wire still in good con-dition—all good wirebut too short to reachfrom the pole to thehouse. These are rub-ber-insulated twin cop-per-coated steel wireswith a heavy neoprenejacket, and are not easyto splice properly. Butsome way had to befound to use theseshort pieces. So a spe-cial splicing machinewas developed whichsecurely fastens theconductors togetherand then by heat andpressure forms a plas-tic insulating coveringover the completedsplice. Now 3,000,000feet of short ends ofdrop wire are splicedtogether each month inthe Western Electricrepair shops, saving130,000 pounds of ma-terial in this one conservation opera- specifies the smallest gauge of wiretion.
Text Appearing After Image:
Placing a metal band tightly around the end of a cross- arm postpones—perhaps for years—the need for a new arm and for transferrin* the wires An ENGINEER in Philadelphia studies the exchange 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

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