File:Bell telephone magazine (1922) (14775927233).jpg

Identifier: bellvol25telephonemag00amerrich (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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er allowance iscredited to other customers in theneighborhood who require more.For example, if 10 new customerslive within four miles of an existingpole line, and 10 more live six milesfarther out in the same direction. service can be extended to all 20 cus-tomers without a construction chargeto any. For customers who may still needto pay some costs for construction,the charges have generally been re-duced, and most Bell companies offera liberal plan for payment in smallmonthly installments over periods upto five years. Neiv Construction Methods New methods and new machineryhave increased considerably the prac-ticable range of rural telephone lines. One example of this is the use of ahigh-strength steel wire, developedin recent years, for building long-span pole lines and laying them outstraight across private property tominimize the number of corners. Another example is the use of anew power-driven machine for dig-ging pole holes and placing anchors 198 Bell Telephone Magazine WINTER
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When telephoneservice is plannedfor a rural area,the first step is toconsult the peoplewho live there.Often, as here, aCommercial rep-resentative inter-views a farmer inhis field about hisneed for a tele-phone The unit consists of an earth augerdriven by a gasoline engine througha flexible shaft. It is placed on atruck and the auger is raised and low-ered by the truck winch line and der-rick. Under favorable soil condi-tions, the new digger can bore holesas large as 16 inches in diameter to adepth of nine feet. Due to its light-ness and flexibility of operating posi-tions, it can be used on light-weightconstruction trucks instead of theheavy-duty trucks required with theolder types. Buried wire may be used in placeof open wire where soil conditionsare favorable and only one or twopairs will be required. The rubber-covered wire developed by the BellTelephone Laboratories prior to thewar has been improved consider-ably during the past year and isnow undergoing field tests. It con-sists

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