Plate cam 1 rotates about fixed axis A and is rigidly attached to gear 2 which meshes with gear 3. Gear 3 rotates about fixed axis B and is connected by turning pair D to link 7 which carries roller 6, rolling along the contour of cam 1. Link 7 is connected by turning pair C to slider 8, moving along the slot of link 4 which turns about fixed axis E. The working surface of cam 1 is designed so that point C of link 7 describes path q of which portion e-f is a straight line. Consequently, slotted link 4 has a dwell while point C moves along portion e-f of path q. Roller 6 is held in contact with cam 1 by spring 5.
$3317$GrC,D$