Link 2 of four-bar linkage DCFE has two collars a and b which encircle eccentrics 1 and 3. These eccentrics rotate about fixed axes D and E. Upon the rotation of eccentrics 1 and 3, points A and B of link 2 describe connecting-rod curves. The paths of points A and B can be varied by adjusting slide block 4 with axis E along slot d in eccentric 3. This is accomplished by turning lever 5 about fixed axis 0.
$551$LW,4L$