American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 472
as the key-board is removed from above the cylinder. In place of the pins on the cylinder the device outlined at the right end of thecylinder c. Fig. 300, is employed. This consists of a series of 36 electro-magnets mc,arranged in a ring and termed the magnetic circle. Each magnet is provided witha… … 398 AMERICAN TELEGRAPHY. s of the cylinder carries, in proximity to the magnetic circle, an arm e, the end ofwhich revolves close to the left ends of the electro-magnets in such a way that whenany one of the coils is charged with a current, and, consequently, draws in its iron core,against the pull…
Telegraph
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