Cam 1 rotates about fixed axis D and its working surface slides along button a of strap clamp 2. Stud 4 passes through elongated hole b in clamp 2 with some clearance. The height of clamp 2 can be adjusted by lock-nuts 5. Spring 6 holds clamp 2 in its upper position against lock-nuts 5 so that it clears workpiece 3 when unclamped. To clamp workpiece 3, clamp 2 is pushed forward and cam 1 is turned clockwise. This clamps the work- piece with serrated pad d of the clamp. To release the workpiece, cam 1 is turned counterclockwise and clamp 2 is withdrawn to the left.
$3226$CmL,GC$