Pulley 3 and cone and jaw engaging collar 1 rotate about common fixed axis A-A. Collar 1 can slide on a feather key along axis A-A and has rigidly attached jaws 2. Pulley 3 is integral with jaws 4 and is rigidly attached to cone member 5. To engage the clutch, collar 1 is first shifted to the left to bring the conical surfaces of collar 1 and member 5 into contact and to equalize the speeds of the shaft and pulley. When they are approximately equal, collar 1 is shifted to the right to engage jaws 2 and 4.
$3124$SmC,C$