| 摘要 |
A knitting machine is provided with a plurality of positive feed devices for feeding yarn from a plurality of yarn packages to a plurality of feeding stations. The positive feed devices comprise a plurality of rotatable rollers associated with a driven tape running along the surfaces of the rollers and having a width less than the axial dimension of each roller, and a yarn guide comprising a bracket having eyelets to guide the yarn is mounted for free pivotal movement adjacent each roller to position a length of yarn onto the tape for positive feeding or to displace the yarn away from the tape for nonfeed thereof. The position of the yarn guide is controlled by one or more weights which are attached to the bracket at positions displaced from the bracket pivot point to urge the bracket and its eyelets into the nonfeed position under the influence of gravity. When a particular yarn is demanded by a feeding station, the resulting tension in that particular yarn causes the bracket to pivot in the opposite direction against the force of the attached weight to shift the yarn guide into the positive feed position automatically. Subsequent release of tension in the yarn causes the weight to predominate thereby to automatically return the yarn guide to its non-feed position. |
