Conical side cam 1 rotates about fixed axis A-A and has profiled cam surface a. Follower 2 reciprocates in fixed guides D-D and carries barrel-shaped roller 3 which rolls along cam surfaccti. Axis B-B of guides D-D is parallel to an element of the conical surface of cam 1. Roller 3 has point contact with cam surface a. Roller 3 is held in contact with cam 1 by a spring (not shown).
$3038$SmC,3L$