American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 389
pon the resultant of twomotions, like the original Cowper writing telegraph. The system has of late beenmuch simplified and improved, now receiving its message on a sheet or roll of paperabout 5 inches wide. It is in practical use by the United States army, etc. Two wires are employed between the… … Fig. 252^. ^j c \ If i £•-. P which are connected pivotally to one end of crank levers bb, at the other end of eachof which is attached a metal roller r r, which runs over the terminal of resistances,virtually similar to those shown in Fig. 249, with the similar result that the currentis varied in…
Telegraph
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