File:Bell telephone magazine (1922) (14569902010).jpg

Identifier: belltelephonemag22amerrich (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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e long has been decreased. Thissometimes makes it necessary, how-ever, to re-install telephones at loca- which are merely frayed are wrappedwith tape. Parts within the set arealso being allowed to wear longerbefore being replaced. Some customers need telephones inout-door locations, and a special sethas been provided for this purpose.The set as manufactured In the pastwas specially designed to withstand 1943 Getting Along With What We Have 191 the weather, and required the use ofmany special parts. Recently, how-ever, it has been modified so that itmay be assembled from parts whichare commonly used for other pur-poses. The housing was originallyof aluminum; when that becamescarce, cast Iron was used Instead; between the telephone line and thecustomers premises, consists of twincopper-clad steel conductors sepa-rated by rubber Insulation. Over theInsulation is a fabric braid impreg-nated with a weather-resistant com-pound. Continued exposure to theweather results In the leaching out of
Text Appearing After Image:
I Specially designed apparatus is usedproofing compound. Left to right: pay- take- tu re-impregiiate drop wire with weather-out reel, compound tank, setting tank, andup reel I and now, because of the scarcity ofIron, the housing Is made of wood. Drop Wire What is being done in the case ofdrop wire provides another good ex-ample of how the System Is continu-ing to get along with what we have.Drop wire, the important last link this compound, with the result thatsunlight penetrates the braid andcauses deterioration of the rubberinsulation. In normal times, a dropwire which is deteriorated and wornis replaced by a new one, because it ischeaper to use the small amount ofnew wire that Is required than tospend time making repairs. In these 192 Bell Telephone Magazine SEPTEMBER times, however, worn sections are cutout and new sections are spliced in, ifthe drop as a whole is not too badlydeteriorated. The life of drop wires which arenot so badly worn as to require re-placement is being prolon

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