Action of the cam
416
engaging frictionally with the cam, causes the latter on its centre in the direction indicated by the arrow in Figure 10. to turn
FIG.
12.
to the eccentric shape of the cam, its ro-
Owing
tation while resting on the roller causes it to lift the yoke c2 above its original position, so that it
upon the escapement rod (7, lifting the same and causing it to reverse the position of the escapement JB, to release the matrix, as plainly seen in acts
Figure
10.
FIG.
While sumes
this is taking place the yoke-trigger c 6 reas shown in dotted lines in
its first position,
Figure yoke,
13.
10, so that as the rotating
it is
cam lowers
the
again supported in its first position, the