File:Bell telephone magazine (1922) (14755983802).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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am roads aswell as those which are not surfaced.After passage of the plow, the dis-turbed ground in the roads and theditch banks is carefully restored to itsformer condition, thus preventing ero-sion. The caterpillar-tractor-operatedbulldozer, or its close relative the trail-blazer, is useful in preparing a road-way where it is desired to plow-in thecable along a hillside instead of up ordown the hill. It is not safe to oper-ate the train on more than about a 10per cent side grade, due to the tend-ency of the pulling tractors as well asthe plow and trailers to slide downhill. On such side-hill grades thewinch is again useful in minimizingthe tendency of the train to slide tothe down-hill side. \Jf course, in wooded country a road-way must be prepared for moving thecable reels and equipment along theright-of-way as well as to clear a placeto plow. On private right-of-way an ease-ment on a strip of ground about onerod wide is ordinarily secured, an-ticipating the possible future need of
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I 96

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