Cam 1 rotates about fixed axis A and has profiled groove a. Follower 6 oscillates about fixed axis B and carries roller 5 which rolls and slides a long groove a. Rigidly attached to follower 6 is bar 4 which has a number of holes d. Secondary follower 2 oscillates about fixed axis C and has a number of holes b, opposite holes d of bar 4. Intermediate link 3 is connected by turning pairs D and E to collars 7 which can be adjusted a long bar 4 and follower 2 and clamped in the required positions by screws whose tips enter holes d and b. The angle of oscillation of secondary follower 2 can be varied by setting collars 7 in various positions.
$3139$SmC,LL$