Shaft 1 rotates about fixed axis A and its motion is transmitted through meshing gears 2 and 3 to shaft 4 which rotates about fixed axis B. Rotation is transmitted further through meshing gears 5 and 6 to spindle 7 which rotates about fixed axis C, and through meshing gears 8 and 9, with a lower transmission ratio, to drum 10. Owing to the difference in angular velocities, drum 10 turns with respect to spindle 7. Pin a, rigidly attached to spindle 7, is actuated by curvilinear internal cam slot b of drum 10, so that the spindle is fed axially along axis C.
$2799$CmG,SF$