File:Bell telephone magazine (1922) (14569855737).jpg

Identifier: belltelephonevol21mag00amerrich (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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given to selecting locationswhere cable reels can be changed onthe trailers. Distances between loca-tions thus determine the cable lengthsper reel. The preferred method of operationin these mountainside conditions is toroot down the grade, leaving a tractordug in on the top, with its winchrope attached as a safety line to theback of the rooter plow as it is slowlypulled down the slope by other trac-tors. The cable-laying train can belet down grade in the same manner.To obviate the possibility of buriedstones wedging at the side of the plowshare when placing the cable, the lastpass of the plow doing the rootingwork is in the same direction as thecable laying plow will take. Sincethe cable^must be laid in continuous Fig. 6, left: Cable will be buried in the narrowhog back running from the top center in thispicture down to the left. Fig. 7, below: Aerialphotographs such as this, joined and mountedin panels, are of great value in planning theroute of buried cable through difficult terrain
Text Appearing After Image:
Plowing Cables into the Ground 93 lengths which usually are about 1500to 3000 feet each, there may be one ormore up and down grades in one cablelength, thus making necessary thepulling of the cable plow train upgrade as well as down. Here againthe trusty winch is brought into actionafter the tractor has been placed in astrategic position at the top of the hill. Selecting and Preparing theRight-of-Way JMow that we have seen somethingof what the plow train is like and howit can winch itself out of difficultsituations, let us go back in the se-quence of the operations and see howthe route for the buried cable is se-lected, surveyed, and explored so thatthe work of preparing the right-of-way can be started. When it has been determined thata buried cable will be required be-tween two points, possible routes areexplored to establish the best location,keeping in mind such factors as ac-cessibility, estimated cost of the con-struction, nature of the terrain, plantof other utilities, cost of r

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