Telegraph engineering : a manual for practicing telegraph engineers and engineering students (1922)
Hausmann, Erich, 1886- · New York : D. Van Nostrand Company · leaf 160
permanent. Any desired connection may bemade between the different pieces of apparatus in theoffice, or between such apparatus and entering lines, bycross-connecting or bridle wires at the distributingframe. Switchboard rearrangements or changes in trafficrequirements are, therefore, readily met by… … Fig. 8. indicating fuse and a lightning arrester formed by twocarbon blocks separated by a thin strip of mica, and isshown in Fig. 8. 5. Instrument Tables. — Telegraph apparatus at largetelegraph offices is arranged in a very compact form oninstrument tables. One general form of instrument…
Telegraph
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