Driven shaft 1 rotates about fixed axis A. Bevel gear 2 is keyed to shaft 1 and meshes with bevel gear 3 which rotates freely about axis E of arm 7. Arm 7 is free to turn on shaft 9 about fixed axis D. Gear 3 meshes with bevel gear 8 which is keyed to driving shaft 9, rotating about axis D. Gears 2, 3 and 8 have the same number of teeth and, together with arm 7, constitute a bevel-gear differential with the transmission ratio i₂₃=-1. The closing train of the differential gearing consists of gear 5, keyed to shaft 9, which meshes with gear 6 keyed to shaft 10. Shaft 10 rotates about fixed axis C. Also keyed to shaft 10 is cam 4 whose cam surface engages roller a of arm 7. When shaft 9 rotates at uniform velocity, shaft 1 has a complex intermittent motion whose character depends on the shape of cam 4.
$2793$CmG,ML$