Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 549
the operator through a hole in the rubberfinishing strip. The lever, a, is so arranged as to be moved by theslotted link rods, c and d, pivoted respectively to the key levers, Land L. By virtue of the pin and slot connection between theselinks and the lever^ a, the target will be moved into the… … FIG. 376.-KELLOGG RINGING AND LISTENING KEY. moved by means of link, d, so as to have its red portion visible to theoperator. This target, therefore, always shows to the operatorwhich one of the ringing keys was last operated, so that if requiredto ring a party a second time she will not press the…
Telephone
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