| 摘要 |
<p>In a textile yarn processing machine, such as a two-for-one twister and the like, having spindle assembly stations for the processing of yarn and each including devices forming a rotating balloon of running yarn and spindle control mechanisms, such as start and stop devices; the combination therewith is provided of a yarn guide eyelet and monitoring mechanism for operating the spindle control mechanisms in response to the absence and presence of yarn running therethrough, as follows. A yarn guide eyelet limits the upper end of the rotating balloon of yarn during passage of the running yarn therethrough which causes forces on the eyelet in the running direction of the yarn. A leaf spring movably supports the eyelet and biases the eyelet into a predetermined position in the absence of yarn running through the eyelet and allows angular movement of the eyelet in the running direction of the yarn out of the predetermined position by bending of the spring under the influence of the forces acting on the eyelet in the presence of yarn running through the eyelet. A device is responsive to the positioning of the eyelet into and out of the predetermined position thereof for operating the spindle control mechanisms.</p> |
