American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 100
handle, was connected with the line. Consequently, when the pointertouched any one of the raised pieces of metal the circuit was completed. The opera-tor held this pointer in his hand and drew it over the surface of a desired character,closino-and opening the circuit as he did so in a manner to… … way, arranged. Above each of the characters representing a letter, a key, which couldbe readily depressed by the finger, was placed. This depression brought a metallicbrush, connected to the under side of the key, into contact with the surf ace of the cyl-inder. The same act of depression of a key…
Telegraph
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