Spherical cam 1 rotates about fixed axis A-A and has cam surface b. Follower 2 oscillates about fixed axis B and carries roller 4 which rolls along cam surface b. Rigidly attached to follower 2 is gear segment a, meshing with gear 3 which oscillates about fixed axis C. When cam 1 rotates, gear 3 oscillates about axis C.
$3069$SmC,4L$