American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 419
of ringing up the distant station, a vibrator or generator/*may be inserted at x. The practical operation of the switching apparatus k, etc., in sending and re-ceiving, may be briefly described: As shown in the figure, the telephone receiverweighs down the hook, or switch k, thereby opening the… … TERMINAL CONNECTIONS—TELEPHONE, ETC. uunciator circuit at n and closes the circuit of the receiver at the strips/. This, itwill be seen, places the transmitter, and battery tb, in the circuit of the primarycoil p of ic. Simultaneous telegraphy and telephony has been in successful operation in…
Telegraph
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