File:Bell telephone magazine (1922) (14755989642).jpg

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English:

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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Fig. 28. Lightning shield loire bracket. It is often necessary to bury properly spaced lightning-protection wires in the same furrow with the cable 101 102 Bell Telephone Magazine JUNE
Text Appearing After Image:
Fig. 29. Changing Reels on the Front TrailerThe train must be broken in order to get a full reel of cable to the front trailer and remove the empty reel ter or by the nearest bridge. It maybe found desirable also to root acrossbefore laying the cable under thestream, whereas in the soft marsh therooting may not be necessary (Figure18). If the cable plow is started on oneriver bank in the trench previouslycut by the rooter, and the winch linepull is made from the same positioneach time, the plow will ordinarilyfollow the rooter trench. In somecases of this sort, the plow and trailerequipment have been almost com-pletely submerged. Important Features of Operationof the Plow Train Ihe caterpillar tractor placed nextto the plow in the train is equippedwith a 4-drum winch (Figure 19)with independent lever controls con-veniently located for the tractor driverso that he can exert a pull up to about6000 pounds on any one or more ofthe four winch ropes. Two ropes feed to pulley blocks atthe ba

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current22:43, 17 September 2015Thumbnail for version as of 22:43, 17 September 20152,006 × 882 (527 KB) (talk | contribs)== {{int:filedesc}} == {{subst:chc}} {{information |description={{en|1=<br> '''Identifier''': belltelephonevol21mag00amerrich ([https://commons.wikimedia.org/w/index.php?title=Special%3ASearch&profile=default&fulltext=Search&search=insource%3A%2Fbellte...

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