American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 281
lse, for the faceof the impulse tooth, 1, 2, will follow up theedge with a speed proportional to the inclina-tion of the impulse angle and the amount ofopening in the cylinder. By referring to a cuttowards the end of this article, the amount ofdisplacement of the edge, ft, can readily bediscerned.… … to pass behind the heel of the tooth fully andclearly. In this position the point, 1, of thetooth is just entering into lock, while thesi^nie tooth in Fig. 2 is seen with half the im-pulse given. In Fig. 3 we have just the posi-
Clocks and watches
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