American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 507
nger PC, as shown, t is the transmitter, nr theneutral relay and pr the polar relay of the qradruplex. The polarized relay controlsthe printing magnet em. Breaks are sent by operating the transmitter which causesthe sounder s in the local circuit of the neutral relav to o-ive a break sio-nal. 430… … ESSICK PAGE AND LINE PRINTER, THEORY. The Essick Page and Line printer, as the name implies, departs from thismethod and furnishes a record of messages received on a page of paper. THE ESSICK PRINTER. 43 1 This necessitates, of course, means for moving either the paper, or the type-wheel,suitable…
Telegraph
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