Cam 1 rotates clockwise about fixed axis A and turns lever 2 with follower roll c about fixed axis B. When roll c is lifted to its highest point and tooth a of the pawl rides on the periphery of cam 5, lever 2 is held in this position by latch 3, which is integral with pawl 4. Cam 5 has ratchet-shaped notches and is integral with gear 6 with which it rotates freely on the hub of fixed sun gear 7. Gear 6 has one tooth less than gear 7. Meshing with gears 6 and 7 is planet pinion 8 which rotates about axis D of a pin carried by cam 1. When cam 1 rotates continuously, cam 5, due to the difference of one tooth in the numbers of teeth of gears 6 and 7, rotates at a much slower speed than cam 1 and varies the lengths of the dwell of lever 2 in its oscillating motion.
$2796$CmG,D$