Abstract: A method and apparatus for reestablishing the spinning operation of an open-end spinning machine following completion of spinning of a full package. The apparatus uses a traveling service unit having a device for forming a yarn reserve on a projecting end of a full package, a device for removing the full package with the yarn reserve thereon, a device for placing an empty tube in position for winding, a device for preparing an end of auxiliary yarn for restart feeding to the spinning element, a device for feeding the end of auxiliary yarn to the spinning element to restart spinning and withdrawing restarted yarn from the spinning element, and a device for engaging the restarted yarn on the empty tube to reestablish the spinning operation. The forming of the yarn reserve is performed while the end of auxiliary yarn is being prepared for restarting of spinning. The package is removed while the auxiliary yarn end is being fed to the spin box for restarting of spinning.

Abstract: A support disk assembly for rotatably mounting alongside a like support disk assembly as a bearing for rotatably supporting a shaft, such as the rotor shaft of an open end spinning machine. The disk assembly includes a pair of disk members each with a respective clamping flange selectively attachable and detachable from one another for grippingly retaining a tread member between the clamping flanges in operation while permitting easy removal and replacement of the tread member when worn by disassembly of the disk members.

Abstract: A lifter rod actuates controllable yarn reserve devices of an open-end spinning machine. A reciprocating device for the lifter includes a shaft supported in the frame of the spinning machine and driven at a given angular velocity. A swash plate disposed on the shaft revolves at the given angular velocity. The swash plate has a circular-annular bearing with an outer ring being rotatable relative to the swash plate. The outer ring has an articulated coupling for mechanically jigging the lifter rod. A mechanical operative connection connects the articulated coupling with the lifter rod. The shaft, the swash plate, the bearing, the outer ring, the articulated coupling, the mechanical operative connection and the lifter rod form a mechanical operative chain. A jigging amplitude control device is diposed in the mechanical operative chain and firmly connected to and supported in the machine frame.

Abstract: In an open-end rotor spinning device having a rotatable spinning rotor and a coaxial yarn withdrawal navel mounted in a rotor cover, a tubular twist choking member is removably mounted rotatably in general airtight relation to the cover at an angle with respect to the rotor axis with a yarn withdrawal tube affixed coaxially to the twist choking member. A curved passageway extends longitudinally through the twist choking member with plural obliquely-arranged yarn deflection elements constricting the convex side of the passageway. The twist choking member and the yarn withdrawal tube may be selectivey positioned rotatably as a unit to achieve a desired effect on spinning stability and yarn quality.

Abstract: A method for piecing a thread formed in an open-end rotary spinning machine to an end of a previously formed thread, wherein spinning fibers are fed to at least one rotating fiber collection surface, the collected spinning fibers are further transported to a thread forming station connected to the fiber collection surface, and the end of the previously formed thread is joined to the spinning fibers transported to the thread forming station as the thread end is rotated, the pieced thread being continuously withdrawn from the thread forming station while spinning fibers are being continuously fed to the fiber collection surface includes a method for piecing a thread formed in an open-end rotary spinning machine to an end of a previously formed thread, wherein spinning fibers are fed to at least one rotating fiber collection surface of a spinning rotor disposed in a closed spinning chamber under negative pressure, the collected spinning fibers are further transported to a thread forming station connected to the

Abstract: A open-end spinning assembly includes a silver insertion device, a fiber separating device, a fiber guide device, a fiber collector for collecting, aligning and imparting a rotational movement onto fibers and subsequently applying the fibers to an open yarn end, and a draw-off device drawing-off yarn from the yarn collector. A fed-back yarn end is applied to a piecing fiber quantity fed into fiber collector for forming a piecer. The yarn is continuously drawn-off from the fiber collector and fibers and continuously fed into the fiber collector. A method for monitoring the piecers includes automatically measuring diameter values relative to the longitudinal axis of the yarn for the piecer and for yarn lengths upstream and downstream of the piecer having at least substantially the length of the piecer. The diameter values are electronically stored in memory and compared with comparison values for producing a comparison result.

Abstract: A method and apparatus for stopping and subsequently restarting an open end spinning machine wherein, upon an electrical power interruption exceeding a predetermined duration, the spinning rotor, sliver feed roller, yarn take-up roller, and yarn winding drum are deactuated, the yarn take-up roller and winding drum are braked to a standstill, and the length of withdrawn yarn during braking is measured and stored, and, upon restarting of the machine, the sliver feed roller is briefly operated to initially deliver a start-up sliver length to the rotor and yarn take-up roller and yarn winding drum are operated in reverse to feed back to the rotor a length of withdrawn yarn corresponding to the measured and stored yarn length in advance of reactuation of the spinning operation.

Abstract: An apparatus for open-end spinning is provided which includes a twisting element for twisting yarn. A yarn withdrawal nozzle is provided downstream from the twisting device in a yarn withdrawal direction. A yarn withdrawal device downstream from the yarn withdrawal nozzle withdraws yarn from the twisting device. A yarn deflection device is provided for deflecting yarn downstream from the yarn withdrawal nozzle. The yarn deflection device includes at least one false-twisting edge. The yarn deflection device includes a first deflection which deflects the yarn in a first direction and at least one additional deflection downstream from the first deflection which deflects the yarn into a direction deviating from the first direction.

Abstract: A fiber opening, fiber feeding and yarn withdrawing unit for a spinning station of an open end rotor spinning machine, in which a projection of the fiber feed conduit extends into the rotor behind the fiber slide wall at a close spacing thereto and to an extent greater than the diametrical extent of the open end of the rotor. The components of the unit are mounted on a unit housing that pivots about an axis transverse to the axis of rotation of the rotor and spaced from the plane of the collection groove of the rotor to the side opposite the rotor open end and also spaced from a plane generally perpendicular to and at the rotor open end of the portion of the fiber slide wall adjacent the fiber feed conduit end, for pivoting of the projection into and out of the rotor without interference therewith.

Abstract: A braking device for a rotor shaft of a rotor spinning machine of the type having spaced pairs of rotating bearing support discs. A brake shoe is pivoted for movement upwardly between the bearing support discs and a pair of holddown elements are pivoted for movement downwardly from above the bearing support discs against the rotor shaft to hold the rotor shaft in the nip of the bearing support discs while the brake shoe is acting to brake the rotor shaft, with the holddown elements applying a cleaning action on the rotor shaft. The manipulating mechanism for the holddown elements and brake shoe are such as to apply a greater force downwardly through the holddown elements than is applied upwardly by the brake shoe so that the rotor shaft will remain in the nip of the bearing support discs during the application of braking by the brake shoe.

Abstract: A method of producing a twisted thread from spinning fibers by friction spinning includes moving two friction elements of a friction spinning machine in opposite directions defining a spinning wedge therebetween, at least one of the friction elements having a perforated wall, feeding spinning fibers into the spinning wedge in a given direction with a transporting air current, continuously withdrawing a twisted thread from the spinning wedge in the given direction, sucking a first part of the transporting air current through the perforated wall of at least one of the friction elements, and sucking a second part of the transporting air parallel to the spinning wedge, parallel to the thread and opposite to the given direction in which the thread is withdrawn and the fibers are fed into the spinning wedge, and a device for carrying out the method.

Abstract: Means for positioning the end of yarn on a cross-wound bobbin on a textile machine. The machine has a traveling service mechanism that services the bobbins individually at winding heads of the machine. A yarn end take-in device in the form of a suction tube with a concave surface facing the bobbin and a nozzle against the bobbin searches for, takes in and draws off a yarn end from the bobbin. A yarn guiding device, in the form of an inclined slot in the suction tube or a pivoted guiding rod, guides the yarn end against a side of the bobbin. A yarn guide element on the winding head, on the creel or on the servicing mechanism is positioned with an oblique surface extending to an end adjacent the juncture of the bobbin side and bobbin tube to guide the yarn to the juncture for forming a yarn end reserve thereat.

Abstract: A device for transferring crosswound coils from a crosswound-coil delivery location of a textile machine into a box-shaped conveyance includes a flat conveyor for collecting crosswound coils in mutually adjacent rows, and grippers for unloading the collected crosswound coils, the flat conveyor and the grippers being combined into one structural unit, the structural unit being pivotable in a vertical plane through an angle of substantially 180.degree. and being controllably changeable in position in vertical and horizontal direction.

Abstract: A method of piecing yarn in the operation of an open end rotor spinning machine that includes applying the suction that picks up the yarn end from the bobbin package for an extended predetermined length of time longer than the optimal minimum length for a normal piecing operation, with the extended suction being of a time sufficient to remove an estimated extended length of defective yarn, either determined by sensing the absence of sliver or after two or three sequential unsuccessful piecing attempts.

Abstract: An open-end rotor spinning machine includes a plurality of spinning stations each including a first thread monitor monitoring a thread course and a rotor spinning device receiving a fiber supply and having a spinning element; an automatic thread joining device for joining a thread to be conducted to the rotor element, and a second thread monitor disposed on the automatic thread joining device for monitoring the thread course without placing a load on the thread when the first thread monitor is inoperative and the automatic thread joining device is operative, the automatic device delivering the second thread monitor and a thread to a location directly adjacent the spinning element, and the second thread monitor including a device for immediately interrupting the fiber supply to the rotor spinning device if the second thread monitor detects the absence of the thread.

Abstract: The method for starting up a friction spinning assembly is used in a friction spinning assembly including: friction surfaces movable in opposite directions forming a spinning wedge, at least one of the friction surfaces being a perforated drum having a suction device with a suction nozzle acting on the spinning wedge by suctioning air through the wall of the at least one perforated drum; at least one suction device acting on the spinning wedge; and an automatic startup device performing a thread joining operation.

Abstract: Coil producing machine with a mobile exchanging device for replacing full wound coils with empty coil cores or partly wound coils, and with a stationary loading magazine for replenishing the empty coil cores or partly wound coils required by the exchanging device, comprising a mobile coil-core carrier, and means for automatically shuttling said carrier between the exchanging device and the loading magazine.

Abstract: A device for exchanging empty cans with cans filled with sliver at a sliver processing machine having set locations for the cans wherein a mobile transport device is automatically driven along a floorlike travel path at the machine include successively placing filled cans entrained with the transport device automatically at set locations of the machine which are unoccupied, picking up empty cans automatically with the transport device, and driving the transport device automatically back to a loading station, when the transport device is too full to pick up any more cans, so as to surrender the empty cans and pick up filled cans at the loading station preparatory to driving the transport device back to the sliver-processing machine or to another machine.

Abstract: A driven thread storage device for compensating instantaneous differences between thread feeding and withdrawal velocities in a textile machine includes a device for axially feeding thread at a feeding location, a device for axially withdrawing thread at a withdrawal location, a stationary storage drum, a driven thread guide in the form of a rotation-symmetrical disc conducting the thread to the storage drum and producing a thread balloon at the feeding location, the disc having an edge with at least one radially open thread guide slot formed therein, and a device disposed outside the thread balloon for supporting the disc.

Abstract: An opening roller unit for open-end spinning installations as a shaft supported in a bearing box and an opening roller arranged on an end of the shaft which projects from the bearing box. The opening roller extends over the bearing box in a manner forming a cavity that is sealed toward the outside with an annular sealing gap and comprises the base member and the ring detachably secured thereto which has a fitting provided on the outer periphery thereof. The detachable ring is mounted upon the base member in a manner blocking the external axis to the cavity. In accordance with one preferred embodiment, the ring of the opening roller extends over the bearing box and the cavity is defined by the ring and bearing box, while the scaling gap is provided between the ring and the bearing box in conjunction with an annular insert attached to the bearing box.