t to respond in 300 revolutions per minute. In the experiment of the commutator segments, 1, 2, 3, 4, 5, etc. A brush, b, touches the ring of the arm, F, and is connected with the transmission of impulses or signals. Visual Synchronism Company above referred to, a the line. It will be seen that… … keyed punching machine without calling Fig. 9.-NEW SYSTEM OF BAPID TELEGEAPHY-DIAGBAM OF CIRCUITS, sents an electrical punching machine con- in the aid of stenography. A portion of nected with an ordinary "type writer; Fig. the speech could be recorded on thestrip, ried by the arm, F, touches the…
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