Abstract: An open-end spinning unit includes a rotor housing and a rotor revolving in the rotor housing and having a fiber collecting groove formed therein defining a groove bottom. An apparatus for cleaning the rotor includes a cleaning device having a scraper to be positioned in a predetermined position in the fiber collecting groove of the rotor. The scraper automatically assumes an optimal length independently of its abrasion from wear upon entry of the cleaning device into the rotor, for assuring a secure placement of the scraper in the bottom of the fiber collecting groove.

Abstract: A method of handling the tube and cop supporting pallets in a textile winder during batch changing operations, by which, at the end of a batch, the pallets are maintained in the transport system of the winder and are conveyed from the tube return path to the cop supply path. First, the winding operation is stopped, a selected winding station at one end of the distribution segment is evacuated to facilitate clearing therethrough of the distribution segment and, subsequently, the other winding stations are successively evacuated to release the pallets held in their respective unwinding and backup positions. Downstream along the tube return path, the cops or tubes are removed from all approaching pallets, regardless of whether they still carry any yarn.

Abstract: A textile machine apparatus for handling tubes having remaining yarn thereon includes a branch path for supporting tube support members, which individually support tubes thereon, for travel to and from the discharge assembly of a textile winding machine. The tube handling apparatus also includes a sensor disposed along the discharge transport path of the tube support members from the winding stations of the textile winding machine for discriminating among tubes having no yarn thereon and tubes having remaining yarn thereon. A guide member is operatively connected to the discriminating sensor for guiding the tube support members supporting tubes having remaining yarn thereon onto the branch path for transport therealong to a tube stripping device, which strips the tubes of the remaining yarn. The stripped tubes are then returned to the discharge transport path at a location upstream of the discriminating sensor.

Abstract: An apparatus for removing yarn remnants from a cop tube, especially a cop tube located a caddy, includes a device for removing yarn remnants from the cop tube. An elastically deformable energy storing device is disposed in the vicinity of the bottom of the cop tube. A holder for the yarn remnant removing device is movable along the cop tube and toward the energy storing device for storing potential energy.

Abstract: A transport system for mutually independent caddies carrying bobbins or bobbin tubes and having base plates, includes one transport path and another transport path entering the one transport path at a converging point. Moving surfaces, in particular surfaces of conveyor belts, carry the caddies along the transport paths by frictional engagement, with the caddies standing on the base plates. At least one additional contact surface is disposed at the converging point for touching a caddy passing through the converging point and imposing an additional motion component upon the caddy.

Abstract: A multistation automatic textile machine, such as a multi-position winder or spinning machine, having a passageway formed through the machine's end frame structure for accommodating a transport conveyor or other transport path for spinning bobbins and other strand-supporting tubes.

Abstract: A winding machine has winding stations and a transport path for leading cops to the winding stations. An apparatus for loosening a reserve yarn winding from peripheries of the cops disposed at the transport path includes scissors having two legs being open at an onset of a yarn search. One of the legs is a yarn loosener to be placed against a cop positioned on the transport path. The cop is rotated to bring the yarn loosener under the reserve yarn winding. An actuator closes the scissors after a predetermined search period. The apparatus for loosening the reserve yarn winding may include a yarn loosener to be placed at a cop positioned on the transport path, wherein the yarn loosener has a forward edge for picking up a yarn, and a sharp cutting edge with a height being increased at increasing distances from the forward edge for cutting the yarn.

Abstract: A textile machine transport apparatus is provided for transporting tube support members to and between locations at which yarn packages supported on the tube support members are handled. The transport apparatus includes an assembly for advancing the tube support members along a delivery path. The advancing assembly is reversibly drivable in a forward direction and in a reverse direction opposite to the forward direction to provide the capability to, for example, reverse the advancing movement of some of the tube support members or to advance other tube support members in a different advancing direction. The transport apparatus also includes a device extending laterally relative to the delivery path of the tube support members for engaging a tube support member to prevent further upstream movement thereof. The laterally extending device may be in the form of a stop guide extending into the path of the tube support members as they are transported in an upstream direction.

Abstract: A yarn end preparing apparatus is provided for drawing off a yarn end of a textile yarn package and thereafter rewinding the drawn out yarn end onto the yarn package at a preferred location thereon. The yarn preparing apparatus includes a suction housing supported on a pair of vertical guide rods for movement parallel to the axis of a yarn package to be prepared. A pair of linkage members, each comprising a conduit, are pivotably connected to one another with their respective conduits communicated with one another for applying suction through the conduits to the suction housing to thereby effect drawing in of a yarn end through a suction slot of the suction housing. A light beam emitting member is mounted forwardly of the suction slot for emitting a light beam detected by a light beam detecting member mounted on an opposite forward side of the suction slot.

Abstract: A strand end preparation apparatus includes a suction applying housing having a longitudinal suction slot and a pair of suction assemblies, each communicated with the suction applying housing. Each suction assembly includes a suction blocking device for selectively blocking the flow of suction therethrough and a strand end cutting device for selectively cutting a strand end drawn into the suction assembly. In one variation of the strand end preparation apparatus, suction is applied simultaneously through both suction assemblies to draw a strand end off a yarn package through the suction slot and into a respective one of the suction assemblies. The drawn in strand end is then re-wound on the package of textile strand material at a preferred disposition thereon. The strand end preparation apparatus advantageously provides sufficient suction along the entire axial extent of the textile strand material of the package so that a strand end can be reliably drawn off during a strand end disposing operation.

Abstract: An apparatus for automatic rotational positioning of textile yarn winding tubes about their lengthwise axes while being transported on peg-tray tube carriers along a conveyor belt or other transport path includes a positioning station having a pair of rotatable positioning rollers disposed at the station along one side of the transport path at a sufficiently close spacing to one another to prevent passage of the peg trays therebetween. Each peg tray has a base plate whose annular surface is formed of a magnetically attractable material such as iron and at least the upstream one of the positioning rollers is magnetized to selectively exert a magnetic force on the peg trays at controllable intervals. As desired, the downstream positioning roller can also be magnetized.

Abstract: An apparatus for preparing an end of a strand of textile material built into a package includes a conduit for supporting the strand end during unwinding and a device for engaging the unwound strand end to apply yieldable resistance thereto in opposition to rewinding of the strand end onto the textile package. Additionally, the strand preparing apparatus preferably includes a conduit operatively connected to a suction source and having an opening, the conduit being disposed for applying suction through the opening to the package. A rewinding guide member is selectively positionable along the conduit opening for adjusting the relative position at which the unwound strand end exits the conduit during rewinding onto the package to thereby vary the predetermined axial location on the package onto which the strand end is rewound.

Abstract: A yarn end preparing assembly for a textile winding machine wherein yarn packages are disposed on peg tray-type tube support members and transported to winding stations along a common preliminary path to a respective one of a plurality of yarn end preparation devices which have components for sequentially handling the yarn packages to dispose their yarn ends in preferred preliminary dispositions. The yarn end preparation devices are each disposed on a respective branch path which branches the common preliminary path. The relationship of the branch path to one another can be varied and the relationship of each component of the yarn end preparation devices relative to the same respective component on the other yarn end preparation devices can be varied to optimize the production capability of the yarn end preparing assembly. Sensors and pivotable arm members are provided to selectively guide the tube support members to the branch paths.

Abstract: An apparatus for handling the end of a strand of textile material built into a package is provided. The strand end handling apparatus includes a tangentially engaging member for tangentially engaging the outer surface of a yarn package to dislodge a strand end therefrom and a sensing member for sensing a dislodged strand end. Additionally, the strand end handling apparatus includes a control member, for controlling subsequent handling of the yarn package following the sensing of a dislodged strand end.

Abstract: A method and apparatus for producing an end winding on a bobbin on which yarn has been wound. The bobbin is wound in an unwinding direction while the trailing yarn end is engaged and a length of yarn is unwound from the bobbin by suction. The yarn is released from the suction once a length of yarn has been unwound from the bobbin, the released unwound yarn falls onto a yarn support member to be supported at a location at substantially the level of the upper end of the bobbin. The bobbin is then further rotated in the unwinding direction to wind the unwound yarn length into an end winding on the upper end of the bobbin. The yarn support member includes a pair of oppositely sloping transverse surfaces spaced lengthwise of the yarn from one another to define a receiving slot therebetween and a yarn guiding eye is disposed beneath and in communication with the receiving slot for supporting the unwound yarn length during winding of the end winding.

Abstract: A device for individually and sucessively advancing cops from a cop-producing machine in an orderly manner via conveyor belts to a cyclically stepwise advanceable cop conveyor having take-up mandrels thereon, comprising respective substantially vertical loading shafts located between the conveyor belts and the cop conveyor for delivering cops in upright position onto the take-up mandrels of the cop conveyor, the loading shafts being formed of sidewise deflectable wall elements, an actuating device operatively engageable with the loading shafts, respectively, for deflecting the wall elements thereof sidewise so as to permit the respective delivered cop to be father advanced by the cop conveyor, clock switching devices connected to the conveyor belts for actuating the belts to individually and successively advance the cops in the orderly manner, and a sensor for distinguishing between the absence and presence of a cop on a respective take-up mandrel of the cop conveyor and for enabling and disenabling the clock

Abstract: Device for unloading textile coils from a coil conveyor provided with take-up mandrels, the textile coils having coil tubes by which the coils are stuck onto the take-up mandrels, includes at an unloading station of the coil conveyor, a fork pivotable about a pivot shaft in a plane perpendicular to the axis of a take-up mandrel thereat and a textile coil stuck thereon for gripping under the lower end of at least one of the coil and the coil tube and supporting the coil tube, the fork being connected to a counterbearing disposed above the textile coil and pivotable in the same rotational sense as the fork, a lifting device connected to the pivot shaft of the fork for lifting the textile coil, a deflector wall located adjacent the coil conveyor, the fork being pivotable with the lifted textile coil and, with upper parts of the textile coil disposed against the counterbearing, until the fork is beneath the deflector wall and the textile coil comes into contact with the deflector wall, the textile coil being slid

Abstract: A device for inserting the thread end of a textile bobbin into a bobbin sleeve includes a bobbin conveyer, slip-on arbors disposed on the bobbin conveyer, each of the slip-on arbors being a tube with upper and lower open ends for receiving a bobbin sleeve thereon, a first controllable suction nozzle, a device for positioning the first suction nozzle against the lower end of one of the slip-on arbors on which a bobbin sleeve is disposed, a controllable mechanical thread stripper for stripping thread from the bobbin sleeve, a thread clamp, a second controllable suction nozzle connected to the thread stripper and to the thread clamp, a device for moving the second suction nozzle upward and downward into a stop position against the upper end of the bobbin sleeve, a controllable holding device for laterally pressing the base of the bobbin sleeve against the one slip-on arbor, a thread severing device disposed downstream of the second suction nozzle as seen in travel direction of a thread end separated from the bob