When cylinder 1 is moved to the left by the action of fluid delivered to its left end, draw rod 2 actuates strap 3 which exerts uniform pressure on two gib-headed bolts 4, clamping workpiece 5 in the horizontal direction. At the same time, piston 6 is moved to the right by the fluid and its rod 7 actuates strap 8 which exerts uniform pressure on two sliders 9. Bevels a of the sliders push plungers 10 upward so that strap clamps 11 clamp the workpiece at two points in the vertical direction. The piston, cylinder and all the members linked to them are returned to the initial position, releasing the workpiece, by springs 12 and 13. This forces the fluid out of the cylinder back to the tank through a passage in piston rod 7.
$3880$LHP,GC$