When piston 1 moves upward by the action of fluid delivered to the bottom end of the cylinder, yoke 2, secured on the piston rod, turns bell-crank lever 3 about fixed axis A. The rounded end of one arm of lever 3 fits into the slot of yoke 2. Lever 3 transmits motion through link 4 to lever 5 which turns about fixed axis B and clamps workpiece 6 located in V-block 7. Workpiece 6 is released and all the links are returned to their initial positions when piston 1 is moved downward by spring 8.
$3858$LHP,GC$