with this instrument, it can co-operate, and is not necessary to understand the telegraph alphabet, with a wire and nor to know anything in regard to telegraphy. The signals are pre-arranged, so that the operation of send- ing is purely mechanical. The signal board here represented in detail, was… … of the sounder are journaled being connected with the two rollers, a b. The roller a binding posts of the _ re- is flanged and provided on its cording instrument and with periphery with three or four a battery, when a signal is rubber bands, to give it fric- sent, the recorder is released tional…
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