When piston 1 moves to the right by the action of fluid delivered to the left end of the cylinder, movable jaw 2 clamps workpiece 3 located on pin 4. At this, latch levers 5, turning about fixed axes A and actuated by spring-loaded plungers 6, snap over the workpiece. Fluid is delivered to the cylinder through channel 7 and is controlled by directional valve 8. As piston 1 is moved to the left by spring 9, workpiece 3 is released and latch levers 5 pull it off pin 4.
$3853$LHP,GC$