American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 462
rtion. The pallet, oranchor i, which regulates the escapement,is provided with an extension r, whiclireaches down to the upper portion of theplate N. When the armature and, conse-quently, this plate,is in the position shownin Figs. 295, and 295^;, the pallet i is heldagainst the wheel 11,… … Another arrangement for indicating any change in the condition of a buro^lar 3B8 AMERICAN TELEGRAPHY. alarm circuit, known as a double balanced relay, is shown diagramatically in Fig.206. This instrument performs a practically similar office to that of tlae galvanometer, FIG. 296.
Telegraph
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