Plate cam 1 rotates about fixed axis A. Follower 2 oscillates about fixed axis B and has pin d with knife-edge b which slides along contour a of cam 1. Pin cof follower 2 slides along slot f of slide 4 which reciprocates in fixed guides D-D. Knife-edge b is held in contact with cam 1 by spring 5.
$3189$CmL,ML$