Figure 1. Cam mechanism a) lifter of the cam mechanism, b) lifter of the cam mechanism and pulley, c) thumb of cam

From

Kinematical Analysis of Crank Slider Mechanism with Graphical Method and by Computer Simulation

Hroncová Darina, Frankovský Peter, Bettes Gabriel

American Journal of Mechanical Engineering. 2016, 4(7), 329-343 doi:10.12691/ajme-4-7-18