American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 112
he relay at right of Fig. 62, and separ-ately in Fig. 6^. In the latter figure c c^ are the insulated wires passing into theinsulated handle/and which are connected to the brass segments b b^, which latterare insulated from each other by the insulating material /. Of course, care must betaken to… … 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…
Telegraph
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