Open end spinning machine with associated service device

In combination, a textile machine having a plurality of work stations each operable for winding a yarn onto a winding tube to form a cheese-type yarn package, each said work station having means for driving the respective winding tube in a rotational direction, the tube driving means including a yarn catching means engageable with one end of the winding tube, and a service device for the textile machine, the service device comprising:

• (a) a frame;
• (b) means for transporting the frame along the textile machine for positioning at a selected work station;
• (c) a supplementary yarn conveying device mounted on the frame for providing a length of a supplementary yarn, the supplementary yarn conveying device including a delivery tube for supplying the supplementary yarn therein;
• (d) means for joining the supplementary yarn to the yarn at the selected work station;
• (e) a yarn placement device for manipulating the supplementary yarn onto the winding tube at the selected work. station;
• and
• (f) a device for holding the delivery tube and the yarn placement device for selective unitary movement thereof to and from a position adjacent the yarn winding tube at the selected work station, the yarn placement device including a yarn guide plate having a contoured yarn guide surface defining spaced first and second yarn engagement recesses, the yarn guide plate being pivotally movable between a first position for engaging the supplementary yarn in the first yarn engagement recess at a spacing from said one end of the winding tube and a second position adjacent said one end of the winding tube for placing the supplementary yarn into the yarn catching means at said one end of the winding tube and transferring the supplementary yarn into engagement in the second yarn engagement recess during winding rotation by said driving means to form a reserve winding of the supplementary yarn on the winding tube.