telegraphy has been (1) By means of a pawl, 8, and ratchet wheel, marked by the production of some of the most in- A, it assists in winding up the main spring, 4 (Fig. 5). genious machines to be found in the whole field of (2) By means of arm, 9, it spins the shaft and fly- practical mechanics; and… … and the numerous pawls and levers, by “ticker,” in a continuous line upon an end- PAGE-PRINTING TELEGRAPH MOUNTED ON STAND. which the various movements in the machine less strip of tape, but in presentable page are performed. A roll of blank paper, 51% inches in form, suitable for commercial or…
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