When piston 1 is moved to the left by the action of fluid delivered to the right end of the cylinder, wedgie 2, mounted rigidly on the end of the piston rod, pulls clamping bolt 3 downward. Motion is transmitted further to sleeve 4, connected by turning pairs A to levers 5 which turn about and slide along pins at fixed axes B. Levers 5 clamp workpiece 6. The workpiece is released and levers 5 are retracted by spring 7 after wedge 2 is moved to the right when fluid is delivered to the left end of the cylinder. Levers 5 are retracted by their profiled slots a which slide along the pins at axes B.
$3873$LHP,GC$