Abstract: Device for generating and controlling a yarn reserve to be installed on service trolleys with open-end spinning frames, for reattachment and start-up interventions on the spinning unit, comprising a mouthpiece which sucks and generates in its interior a loop of reserve yarn, equipped, inside, with sensors for detecting the dimension of the loop of reserve yarn and consequently piloting the reattachment procedure and reconsignment of the bobbin to its standard functioning.

Abstract: Service trolley for open-end spinning machines equipped for the depositing of the final thread reserve on the exhausted bobbin comprising a thread-guide with a horizontal worm-screw, equipped with a cantilever supporting arm which allows its positioning at different levels and also its axial movement, activated in controlled clockwise/anticlockwise rotation driven by a motor, thus determining both the level and axial coordinate to which the thread is brought and wound onto the tube.

Abstract: Service trolley for open-end spinning machines equipped for the depositing of the final thread reserve on the exhausted bobbin comprising a thread-guide with a horizontal worm-screw, equipped with a cantilever supporting arm which allows its positioning at different levels and also its axial movement, activated in controlled clockwise/anticlockwise rotation driven by a motor, thus determining both the level and axial coordinate to which the thread is brought and wound onto the tube.

Abstract: Service trolley for open-end spinning machines having on-board members dedicated to the intervention cycles comprising a device for determining the position of the thread with respect to such members of the trolley that comprises a worm screw, with a horizontal axis parallel to the spinning machine, which engages the thread with its threading, said device being able to be lifted and actuated in commanded clockwise/anti-clockwise rotation to determine both the level of the thread and its axial coordinate.

Abstract: Service trolley for open-end spinning machines equipped with members dedicated to the operations in the intervention cycles and managed by the trolley's own control unit in which each member is independent from the others, being equipped with independent actuation controlled by sensors for the various steps of the intervention cycles.

Abstract: Device for generating and controlling a yarn reserve to be installed on service trolleys with open-end spinning frames, for reattachment and start-up interventions on the spinning unit, comprising a mouthpiece which sucks and generates in its interior a loop of reserve yarn, equipped, inside, with sensors for detecting the dimension of the loop of reserve yarn and consequently piloting the reattachment procedure and reconsignment of the bobbin to its standard functioning.

Abstract: Tailstock device to be applied to the cone-holding arm (26) of collection units (3) of spinning stations (1) of open-end spinning machines wherein the quill is engaged by a toothed tailstock provided with a skew pyramidal toothing on the face presented to the base of the quill.

Abstract: Introducing/removing device of the end of the thread for an automatic service trolley for spinning units of open-end spinning machines comprising a moving structure, capable of taking a gripping member into various working positions and equipped with a gripping member consisting of a pair of parallel motorised rollers pressed against each other according to their generatrices, equipped with actuation in commanded and controlled rotation in the two directions, to introduce and re-extract the end of the thread in the rotor.

Abstract: Service trolley for open-end spinning machines having on-board members dedicated to the intervention cycles comprising a device for determining the position of the thread with respect to such members of the trolley that comprises a worm screw, with a horizontal axis parallel to the spinning machine, which engages the thread with its threading, said device being able to be lifted and actuated in commanded clockwise/anti-clockwise rotation to determine both the level of the thread and its axial coordinate.

Abstract: Service trolley for open-end spinning machines equipped with members dedicated to the operations in the intervention cycles and managed by the trolley's own control unit in which each member is independent from the others, being equipped with independent actuation controlled by sensors for the various steps of the intervention cycles.

Abstract: Tailstock device to be applied to the cone-holding arm (26) of collection units (3) of spinning stations (1) of open-end spinning machines wherein the quill is engaged by a toothed tailstock provided with a skew pyramidal toothing on the face presented to the base of the quill.

Abstract: Introducing/removing device of the end of the thread for an automatic service trolley for spinning units of open-end spinning machines comprising a moving structure, capable of taking a gripping member into various working positions and equipped with a gripping member consisting of a pair of parallel motorised rollers pressed against each other according to their generatrices, equipped with actuation in commanded and controlled rotation in the two directions, to introduce and re-extract the end of the thread in the rotor.

Abstract: The thread end to be used for rejoining in an open-end spinning frame is prepared by cutting it to size and then introducing it into a pipe with a vigorous air flow running through the pipe and contacting the thread end with a vibrating blade, freeing the end of short fibers, tapering the thread end and untwisting the fibers that comprise the thread end.

Abstract: An apparatus for delivering a skein end of a thread wound on a reel to an apparatus for returning the skein end to a spinning machine. The apparatus for delivering the skein end comprises a device for unwinding a reel on which the thread is wound, a capturing device for capturing the skein end of the thread, a transferring device to transfer the thread from the capturing device to a device that returns the thread to the spinning machine, and a detecting device for detecting the presence of the thread in the transferring device. Another aspect of the invention generally features an apparatus for rejoining the skein end of a thread wound on a reel, the thread having been disconnected from the reel due to one of a plurality of different events. The apparatus comprises an unwinding device for unwinding the reel; a capturing device for capturing the skein end of the thread wound on the reel, a cutting device for cutting a portion of the thread captured by the capturing device.