American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 496
ures aremounted on the shaft and nor-mally revolve in the concaved re-cesses of a pair of coilf^, which,like the clatch magnet, have cur-rent sent through them when akey of the keyboard is depressed,with the result, in the presentcase, that the curved iron arma-tures instantly stop in the path… … The Phelps Motor Printing Telegraph Syste M. This system is successfully employed on several long circuits of the Western UnionTelegraph Company. This printer, presumably, derives its distinguishing name fromthe fact that it was the first to be driven by an electric-motor in this country. The…
Telegraph
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