Cam 1 rotates about fixed axis A and has doubly self-intersecting cam groove a. Follower 2 reciprocates in fixed guide B and carries pivoted lens-shaped member 3 which slides along groove a. In one cycle of motion, equal to three revolutions of cam 1, the follower has three rises with different types of motion and three returns with different types of motion. Follower 2 has dwells while member 3 slides along circular concentric portions of groove a.
$3002$SmC,3L$