Shaft A, on which pinion 1 is keyed, is driven at constant speed counterclockwise. Through meshing gears 1 and 3, this rotates core sleeve 2 clockwise since gear 3 is keyed on sleeve 2. Owing to the jamming of rolls 4, outer ring 5 of this overrunning clutch is rotated in the same direction, this rotation being transmitted to shaft B through meshing gears 6 and 7 which are keyed on the sleeve of ring 5 and on shaft B. During the first half-revolution of shaft A, connecting rod 8 turns outer ring 9 of the second (outer) overrunning clutch counterclockwise; during the second half-revolution it turns outer ring 9 clockwise. Since a higher angular velocity is transmitted in this case to ring 9 than tc core sleeve 2, rolls 10, previously free, become jammed and outer ring 5 (now operating as a core sleeve) and shaft B are rotated at a higher angular velocity than in the first half-revolution of shaft A. Rolls 4 are free until connecting rod 8 begins to turn outer ring 9 counterclockwise again in the next half-revolution of shaft A. Thus shaft B rotates alternately at high and low speed, imparting the required pulsating motion to the feed mechanism.
$2188$WL,SF$