When cylindrical ridge cam 1 rotates about fixed axis A, slide 2 reciprocates a long fixed guide d with dwells at each end of its stroke. The motion of slide 2 is transmitted by lever 3 to travelling clamp 4. By means of plate cams 6 and 7, keyed to and rotating with shaft 12, and follower rollers 8 and 9, mounted on plungers 10 and 11 and rolling a long cams 6 and 7, travelling clamp 4 and stationary clamp 5 alternately clamp and unclamp strip a. Stationary clamp 5 prevents strip motion to the left. Travelling clamp 4 grips strip a and feeds it to the right. The amount of feed per revolution of cam 1 can be varied by adjusting bearing b of lever 3 vertically and clamping it in the required position.
$3248$CmL,SF$