Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 147
FIG. 99.—STROMBERG-CARLSON RINGER. a separate yoke, F The screw, B, passes freely through the arma-ture and engages by a shoulder, as shown, the spring yoke, D,through which it also passes, being threaded into the yoke, F. Itis evident that turning the screw in one direction or the other willpress…
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