File:Bell telephone magazine (1922) (14569659358).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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.\ ^;i Fig. 2. View from the RearOne tractor and the rooter plow are omitted in this train (cf. Fig. 1), since the rooting operationis unnecessary where the ground is free of obstructions Fig. 3, left: Where ground conditions are asbad as this, the rooter plow goes ahead, andthe cable-laying plow follows as a separateoperation. Fig. 4, below: Power appliedfrom the single-drum winch of a stationarytractor comes in handy for pulling the train,or any part of it, up hills or out of mud
Text Appearing After Image:
w^ -r^r , ^ ij^^L-^ ^ Mte^ ..^■\ i;6^->- ■ * » BSr ■lifa£ \ i3 ?^ ».^^MmI <■■ y^ ^ ^^^^^^^^ Ei^^^^^VJ^^-- ..-A^- m ^M TZ: i^:.,e^3 ; ^^^^^---^^X^- Fig. 5. Out of a Soft Spot The heavy steel cable rove through the block attached to the front end of this tractor leads to the power winch and towing bar, as shown in Fig. 4, of a tractor up ahead Plowing Cables into the Ground 91 happens that more difficult conditionsexist, or underground obstructions areknown to be present or are suspected—as, for example, when nests of heavyboulders extend down to the bottomof the trench (Figure 3). Here twoor three tractors and one plow willfirst go over the line to root a trench.They are followed, as an entirelyseparate operation, by another plowtrain consisting of one or two tractors,a plow, and one or two cable reeltrailers, depending upon the numberof cables to be placed in the trench. Winching the Train Out of Trouble In rooting or plowing, occasionallythe tra

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