Abstract: A spinning device of a rotor spinning machine has a spinning rotor made of magnetically hard material, seated for rotation in an air chamber connected with an underpressure source. A stator includes at least two electromagnetic coils is arranged around the outer circumferential surface of the spinning rotor. The spinning rotor is made as a ring consisting of magnetically hard material and magnetized normal to the plane passing through the axis of the spinning rotor.

Abstract: The invention relates to a yarn (2) twist retention (1) on an open-end spinning machine comprising a part of a wall of a bent yarn (2) delivery channel (5) forming the inner side (501) of the bent section (50) of the bent yarn (2) delivery channel (5), this section of the wall of the bent yarn (2) delivery channel (5) on the yarn (2) twist retention member being provided with at least one yarn (2) twist retaining means. The yarn (2) twist retention means is made as a longitudinal groove (8) in a part of the wall of the bent yarn (2) delivery channel (5) forming the inner side (501) of the bent section (50) of the bent yarn (2) delivery channel (5), the walls (80) of the longitudinal groove (8) being situated symmetrically to each other along the longitudinal symmetry plane of the bent section (50) of the bent yarn (2) delivery channel (5).

Abstract: A method and apparatus for fibre production by recycling waste fibre material includes pressing the waste fibre material with a pressure element along a contact pressure line onto a surface of a feed roller. The pressure force of the pressure element is variable along the length of the contact pressure line depending on the thickness of the fibre material at a respective position on the contact pressure line so that a thick fibre material does not substantially influence processing of a thinner fibre material along the contact pressure line. The pressure element is radially adjustable relative to the feed roller and is configured with at least one adjusting end pressured device. The pressure element may also be adjustable along the circumference of the feed roller.

Abstract: A method and device are provided for supplying empty tubes to winding devices of a textile machine comprising a plurality of operating units arranged next to each other in at least one line and equipped each with a winding device as a part of the operating unit, with a tube container provided at one end of the machine and coupled with a tube conveyer arranged along the line of the operating unites of the textile machine along which is also provided an attending unit adapted to travel along the line of the operating units and containing a handling device for moving a tube from the tube conveyer to a winding device. Prior to the attempt at rewinding, the handling device of the attending device lays into the winding device an empty winding tube. In case of an unsuccessful attempt at rewinding (at restoring the winding), the winding tube 22 is taken out of the winding device 1 by the attending device 4.

Abstract: A flat container of textile fiber sliver for receiving a sliver produced on a sliver producing textile machine and for feeding the sliver to a sliver processing machine taking over the sliver. The flat container has a movable bottom adapted to move vertically in the flat container, and includes an upper plate arranged adjustably and intended to receive the sliver being deposited, and a lower plate situated under the upper plate and likewise arranged adjustably. The upper plate and the lower plate are mutually coupled by an auxiliary coupling device permitting a common motion and independent motion of the upper and lower plates of the movable bottom.

Abstract: A method and device are provided for conveying tubes (2) on a textile machine in which cylindrical (21) or conical (22) tubes are conveyed, one at a time, by means of a conveyer (6) provided along a line of operating units from a tube container (5) to an attending device (4). The tube (2), while being conveyed, leans on the circumference only on the moving parts of the conveyer (6) in at least two straight sections parallel with the direction of motion of the conveyer (6). The conveyer for carrying out this method comprises two endless belts (61) arranged next to each other along the machine length in such a manner that their mutual distance is along the machine length constant and inferior to the average diameter of the tube to be conveyed (21, 22).

Abstract: A device for delivering wound bobbins from a textile machine, comprising a main conveyor of wound bobbins, the conveyor having an end, an ancillary belt conveyor which receives wound bobbins from the end of the main conveyor and conveys them in a conveying direction; and a multi-story row container at one or both lateral sides of the ancillary conveyor. The height of the ancillary conveyor is adjustable to the height of each row in the row container. An adjustment device, such as one that tilts the row of bobbins on the ancillary conveyor, causes the bobbins to move from the ancillary conveyor to a row of the row conveyor in a direction perpendicular to the motion direction of the belt of the ancillary conveyor.

Abstract: Method and apparatus for spinning-in yarn on an open end spinning machine following a yarn rupture, wherein the machine includes a plurality of operating units which wind yarn on respective bobbins and an attending device movable along the operating units to the unit at which a rupture occurred. Upon a yarn rupture, the winding of the bobbin is halted, and the bobbin is permitted to be unwound a metered length. A detecting nozzle detects the yarn end and sucks in the yarn end and moves away from the bobbin. A catching arm supports the yarn. A tension roller receives the yarn on it. The tension roller is located on a spinning head which is swingable from a position toward the bobbin to a position toward the rotor and the head is then movable to move the yarn on the roller toward the rotor. A clamp on the spinning head clamps the yarn and a trimmer trims the yarn to form the yarn end. An ancillary compensator at the spinning head deflects the yarn to compensate and then releases the yarn.

Abstract: A method and device for detecting the yarn end on a bobbin in a textile machine. The textile machine comprises a plurality of operating units situated next to each other and an attending device adapted to travel along the units and to stop at a selected one of the operating units. The attending device includes a selecting device provided with a detecting nozzle having a yarn sucking mouth. The detecting device is displaced into a detecting position in which the mouth of the detecting nozzle lies in the path of possible motion of a central tube of the bobbin. The bobbin begins to move towards the mouth of the detecting nozzle situated in its detecting position onto which the bobbin circumference comes to lie.

Abstract: A method of spinning-in yarn on open-end spinning machines in which an interruption of the spinning process is followed by the stop of the feed of the sliver (4) into the singling-out device (2) whose combing roller (22) keeps turning, and the rotor is stopped at least during its cleaning. When the rotor (1) has re-started the yarn end is returned to it and brought into contact with the newly formed fiber band. Prior to the re-starting of the rotor (1) and at the latest simultaneously with the start of the feed device (3) of the sliver (4), the surface of the combing roller (22) is acted upon by a pressure air stream acting in the sense of rotation of the combing roller (22) between the place of supply of the sliver (4) to the combing roller (22) and the mouth of the fiber feed channel (212) to the rotor (1) so as to remove from the clothing (221) of the combing roller (22) fibers and sticking impurities. The invention also relates to a device for carrying out the method.