American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 603
number, thus: , etc., assuming the box number,in each case, to be 24. Hence the telephone break-wheel ze/g ^ill b^ equipped with three breaks, corresponding to dot, dash, aof^ and ti:^ 492 AMERICAN TELECxRAPHY. wagon signal wheel Wo^, with two breaks, corresponding to two dashes. Otherbreak-wheels…
Telegraph
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