An Analysis of the Lever Escapement

by H. R. Playtner

[Fig. 16], is also of the same proportion, but the angle

AA′X

is greater because the fork angle

WAA′

is greater than the same angle in [Fig. 15]. We will notice that the intersection

k

is much smaller in [Fig. 15] than in [Fig. 16]. The action in the latter begins much further from the line of centers than in the former and outlines an action which should not be made.

Fig. 16.