wo or more cylinders in the same instrument. terminii, it is frequently necessary to place the va- The springs are provided at 7 with notches to re- rious conductors in communication, so that messages ceive the teeth of the connecting bars, as shown in may be continuously transmitted from one city… … 1. The cylinder and the Springs at the right per- tain to wires that lead be- connecting bars, or their the operator a certain pre-arranged set or combina- low to screw cups under the case, and may con- equivalent devices. 2. The springs acting against nect with the relay instrument, sounder,…
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