Cam 1 rotates about fixed axis A and its contour along portion abc is a circular arc of radius r. Follower 2 reciprocates in fixed guide e and carries roller 3 which rotates freely about axis B. Axis By of follower motion passes through axis A of cam rotation. Follower 2 has its rise when roller 3 contacts portion ad of the contour of cam 1 and its return on portion dc. Follower 2 has a dwell while roller 3 contacts portion abc.
$2978$SmC,3L$