Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 548
L and L, are pivoted in a heavy brasscasting, A, upon which the several sets qi contact springs aremounted. The button or wedge of insulating material (rawhide)carried on the lower end of the lever, L, plays between the hsteninggroup of springs, shown at the left of the figures, and a set of… … M^iii^_ Yyt FIG. 375.-WESTERN ELECTRIC RINGING AND LISTENING KEY. this lever is thrown in the opposite direction the calling plug is dis-connected from the rest of the cord circuit and is placed in properrelation with the calling generator terminals to effect the ringing ofthe bell of one of the…
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