Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 705
i on (no with t irm of the ! V\ hell tl.e . .,11 | the • 694 TELEGRAPH. of the electro-magnet losing all its magnetism, and the armature, with the lever, is carried back bythe action of a little spriDg, being a dot impressed upon the strip of paper. Should the distant opera-tor hold down the key, a… … b d — t NUMERALS. The complete registering instrument, shown in Fig. 3394, is a large spool, on which the strip orpaper is wound, and clock-work, with rollers, give the strip a steady motion onwards under the stvleupon the lever of the electro-magnet. A bell may also be added, which is struck by…
Mechanical engineering
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
