American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 112
ROUND SPLIT PLUG. Lightning arresters l a, Figs. 61 and 62, consisting of flat, metal discs, whichare connected by a strip behind the board with the ground, are placed in closeproximity to the upright straps. [See Lightning Arresters] WAY OFFICE CUT OUT. A common form of cut-out switch for one-wire… … WAY OFFICE CUT-OUT. It consists of a metal strap s, placed on a small base board. On one end ofthe strap a short pin p is attached. A similar pin /^ is set in the base board.At rest, the tension given to the strap brings/ snugly against/^ The s])lit j.hig 84 AMERICAN TELEGRAPHY. p, shown separately…
Telegraph
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