Cam 1 rotates about fixed axis A and has profiled contour a. Connecting rod (follower) 2 has slot b which slides along fixed pin 5. Connecting rod 2 carries roller 4 which rolls along cam surface a. Secondary fol lower oscillates about fixed axis B and is connected by turning pair D to connecting rod 2. Cam 1 can rotate only clockwise, otherwise the mechanism jams. Roller 4 is held in contact with cam 1 by spring 6.
$3064$SmC,4L$