Cam 1 rotates about fixed axis 0₃ and its contour is composed of six circular arcs described from centres 0₁, 0₂ and 0₃. Large arcs d are tangent to small arcs e, described from the same centres: 0₁, 0₂ and 0₃. Follower 2 has two parallel flat faces a-a and b-b which contact cam 1. Follower 2 is connected by turning pairs A and B to slider 3 and lever 4. Slider 3 reciprocates along axis x-x of fixed guide f, and lever 4 oscillates about fixed axis C. When cam 1 rotates, follower 2 has a complex motion with dwells when arcs d and e, described from c entre 0₃ , are in contact with faces a-a and b-b. Positive motion is achieved because all the diameters of cam 1 are equal to the distance between faces a-a and b-b.
$3073$SmC,ML$