When piston 1 is moved to the left by the action of fluid delivered to the right end of the cylinder, wedge 2, mounted rigidly on the end of the piston rod, pushes plunger 3 upward. At this, spherical washer 4 turns levers 5 about fixed axes A to clamp workpiece 6, located on pins, by its inner flange. Workpiece 6 is released and levers 5 are retracted when piston 1 is moved to the right by fluid delivered to the left end of the cylinder. Plunger 3 and two levers 5 are returned to the initial position by spring 7.
$3874$LHP,GC$