Patent ID: 7025299

Claim:
Tail stock device to be applied to a cone-holding arm ( 26 ) of collection units ( 3 ) of spinning stations ( 1 ) of open-end spinning machines comprising of a disc ( 32 ) and a neck ( 33 ) of a diameter such as to receive and hold in position the inside of a quill ( 28 ), the peripheral crown of the disc ( 32 ) constituting the seat for the quill between two tailstocks, characterized in that at least one of the tailstocks ( 31 ) is a toothed tailstock provided with a skew pyramidal toothing formed from teeth ( 34 ) on the outer face of the neck ( 33 ), the teeth ( 34 ) having a face ( 35 ) inclined with respect to the face of the neck itself and said face being substantially perpendicular to an opposite face ( 36 ).