American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 448
orms of register u&ed in the district mes-senger service for recording calls, automatically, is illustrated in Fig. 285. Thisis known as a self-starting, double-pen register. The action of this register is verysimple. A reel carries paper tape which is passed between two rollers, as shown.These… … SELF-STARTING REGISTER—THEORY, FIG, 286. ture levels of these magnets are extended to a point directly under the paper tape; each lever carrying a stylus (seen in side view in Fig. 285, at x.) When either of the magnets is operated the clock-work is started; {in a manner presently to be explained}…
Telegraph
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