Textile machine one-revolution clutch - is triggered e.g. by yarn break to reduce the time between fault signal and machine tripping

摘要

One-revolution clutch is formed by a continuously rotating drive shaft (I) supporting a multi-lobed cam (Ia) and a duplex pawl member in a fixed manner on the one hand and a rotary member provided with a recess and a gear on the other hand. The clutch further includes a shaft (II) which following ensuring of automatic performance of an operative unit of the machine (textile) carries out a single revolution. Shaft (II) carries a cam (IIa) effective to decelerate a yarn guide reciprocator and a cam which ensures mutual disengagement between the shafts (I, II). The pawl member cooperates with a yarn guide by means of a lever which is provided with rollrs, one of which cooperates with the cam (Ia) and the other with the pawl member. Cam (IIA) is operative to actuate the brake of a yarn reciprocator through the intermediary of a cam follower connected to a shaft by means of hub, the shaft carrying at its other end a lever which engages a cam follower on a further lever journalled in a clevis carried by the machine frame and engaging a clutch of the reciprocator.