Cylinder cam 1 is keyed to shaft 8 which rotates about fixed axis A-A. Cam 1 is driven from driving shaft 9 which rotates about fixed axis D. Pinion 2 is keyed to shaft 9 and meshes with gear 3 which is integral with sleeve 5 and rotates freely on and slides along shaft 10. Gear 3 meshes with gear 4 which is keyed to shaft 8. The cam surface of cam 1 engages collar a of sleeve 5. Two-jaw clutch member 6 is keyed to shaft 10 which rotates about fixed axis B. A jaw provided at the left end of sleeve 5 engages one of the jaws of member 6. When driving shaft 9 rotates, cam 1 periodically disengages the jaws of member 6 and sleeve 5 so that driven shaft 10 has dwells. The clutch jaws are re-engaged by spring 7. Gear 3 is wider than gears 2 and 4 by the amount of axial motion of sleeve 5.
$2797$CmG,D$