Plate cam 1 rotates counterclockwise about fixed axis A and has three profiled lobes a. Follower 2 oscillates about fixed axis B and carries roller 4 which rolls along lobes a of cam 1. Owing to the contour of lobes a, roller 4 drops after each rise, imparting vibrational motion to follower 2. Roller 4 is held in contact with cam 1 by spring 3.
$3113$SmC,VM$