American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 353
al recorded and, in fact, constitutes a dash. The effect of all this is that, depending upon the position of the perforations in 300 AMERICAN TELEGRAPHY. the paper, which have ah-eady been prepared for the purpose, dots and dashes aretransmitted by the pole-changing disc d, in practically the same… … WHEATSTONE TRANSMITTER THEORY. used in the British postal service, by which the speed of transmission is said to be in-creased very materially, is shown in Fig. 225. The change is chiefly in the arrange-ment of the battery reversing connections. The bent levers cl, cl, Figs. 223, 224, are dispensed…
Telegraph
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