American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 155
ate of goingof the* watch. The regulation to time iseffected by the whole system swinging con-centric with the balance pivot. The thirdarm carries a pin about the middle coil ofthe hair-spring, which was perhaps a bank-ing pin, as it can have no office in compensa-tion, and no mention is made of it… … dex of steel, swinging in a groove around theverge ; to this is attached, by a screw andsteady pin, a compound circular bar B, withthe lamina of steel exterior, and the brassinterior ; to this is fastened a second com-pound circular bar C, by means of a clampand screw D, and a loose piece of metal…
Clocks and watches
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