Connecting rod 4 of slider-crank linkage ABC is designed as a leaf spring which is connected by turning pair D to link 3, also designed as a leaf spring. Link 3 is connected by turning pair E to crank 1 which rotates about fixed axis F. When crank 1 rotates, ram 2 reciprocates along axis x-x due to the action of leaf springs 3 and 4. The stroke of ram 2 can be varied by changing the position of pivot A. This is done by turning eccentric a and then clamping it.
$2123$EL,HP$