摘要:
A thread brake includes a horizontal abrasion-resistant stripshaped flexible overlay on a resilient backing, pivotally supported about a horizontal axis at the half height of the strip, and a plurality of cylindrically curved braking elements supported at the ends of levers on a common shaft about which the levers are rotated to engage successively against the overlay. In another embodiment the strip is rocked about an axis displaced from itself into engagement with stationary braking elements.
摘要:
The weft brake is released in programmed sequence to the weaving machine to allow picking of a selected weft and is reengaged in response to the lapse of a predetermined time interval. The time interval is determined by means of an adjustable gap formed by a pair of adjustable cam plates run off the main shaft wherein the gap serves to close the circuit to the weft brake. The time interval can also be terminated by an electronic or pneumatic means independently of the operation of the weaving machine.