Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 701
thrown up, and marks the strip of paper passing between it andthe roller. Wliep the distant operator lets the signal-key fly back, and the current ceases, the iron 694 TELEGRAPH. of the electro-magnet losing all its magnetism, and the armature, with the lever, is carried back hjthe action of a… … J k — NUMERALS. The complete registering instrument, shown in Fig. 3394, is a large spool, on which the strip olpaper is wound, and clock-work, with rollers, give the strip a steady motion onwards under the stvleupon the lever of tlie electro-magnet. A bell may also be added, which is struck by its…
Mechanical engineering · Mechanics · Engineering
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