American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 185
t the partial grounds formed by numerous es-capes have sufficed to establish a current between the battery and a point be-yond the unadjusted relay, which current Hows, notwithstanding that a key at somepoint beyond may be open. For example, in Fig. 130, a telegraph line is shown with batteries b… … Assume those escapes to amount in the aggregate to a partial ground, andthatjWhen key k is closed, the major portion of the current from b will pass, byway of those escapes, to the earth, and only a small portion will assist battery b, atY, in operating relay Rg. Then, if the operator at the…
Telegraph
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