Abstract: Fiber slivers must be condensed during the course of a spinning process or their mass must be determined. For this purpose there are employed so-called grooved pairs of rollers, that is to say, profiled rolls which define a sliver throughput groove which is limited or confined at both sides. The sliver is guided through a feed or delivery funnel up to the throughput groove. The danger thus exists that individual fibers can jam between the side surfaces or faces of the rollers which form the lateral boundaries of the groove. This danger is eliminated with the invention in that the fiber outlet opening of the feed funnel is located within the region of a wedge-shaped gap which is bounded by an overlapping zone of the side surfaces or faces of the rollers.

Abstract: A draw-roll assembly is movable downwardly on guide rods from a working position into a filament take-up position. A slightly heavier counter weight connected with the draw-roll assembly by means of a cable ensures that the draw-roll assembly stays in the upper position even upon failure of a pneumatic control and also that the movement forces are limited substantially to the difference between the weights. An electro-pneumatic control controls the movement speed of the draw-roll assembly from the filament take up position into the working position.

Abstract: On textile machines, on which packages are wound with a set or reference yarn length, the changing of these packages by means of a travelling package changing device should be carried out in such time optimized manner that the largest possible number of winding positions can be serviced by the package changing device. For this purpose, the yarn length of packages to be wound is signalled continuously to a computer by means of yarn length measuring units and the location of a package changer is continuously signalled to the computer by means of positioning units. If certain packages reach a remainder or residual yarn length before reaching the set yarn length, then the wind-up times for the remainder yarn length of these packages are compared by the computer with the respective travelling times of a package changer to these packages and registered in an optimization procedure, for example for three of these packages.

Abstract: A transport system for transporting laps wound on tubes in spinning preparation. The laps are transported above head height by carriers or supports movable along transport rails and are raised and lowered by means of carrier rails. The transport rails and the carrier rails are components or parts of a closed, endless circulation path or track. Each carrier has a holder for the lap and a holder for the empty tube. The invention provides the advantages that no special transport system is required for return of the tubes. Moreover, transport of individual laps or of a group of such laps is possible and an ordered and simple circulation path is provided during transport of these elements or parts. Furthermore, the system can readily be automated.

Abstract: In a card, to avoid passage of fibers or fiber flocks over the edge of clothing into a gap, a covering band is pressed against an internal surface of the fiber-guiding roll or cylinder and a surface lying opposite the fiber-guiding roll. The covering band covers the gap between the fiber-guiding roll and a side wall portion. Two forwarding grooves, lying opposite one another in the gap and having transport surfaces lying opposite one another in crossed fashion, return fiber flocks which may possibly pass into the gap to the upper surface. A forwarding pin is set into the roll surface 7 of the fiber-guiding roll outside the edge of the clothing at such a inclination that fibers or fiber flocks which can pass into this region are transported by such pin towards pointed clothing of card flats.

Abstract: A device for mounting or donning of bobbins onto a transport band of a textile machine, especially a ring spinning or ring twisting machine contemplates that incorrectly mounted bobbins are ejected or doffed by a bar member pivotable about a pivot axis or shaft. To eject or doff such incorrectly mounted bobbins the bar member is moved, at a monitoring or control position, in a downward direction towards the head of the bobbin currently there located and ejects incompletely mounted bobbins. The donning device exhibits simplicity and a reliable mode of operation. Furthermore, by means of the invention damage produced by incorrectly mounted bobbins is avoided and damaged bobbins are removed from the operating process.

Abstract: A filament winder of the automatic exchange type in which chucks are brought successively into winding positions relative to a friction drive roller and thread is transferred from a package on an outgoing chuck to a bobbin on an incomming chuck. Each chuck moves along its own predetermined path towards and away from the friction drive roller. A free thread length is created between the friction drive roller and the outgoing chuck and this free thread length is intercepted by thread catching means on the incoming chuck.

Abstract: The invention concerns a method of threading in a thread into a texturing nozzle known as such, and an apparatus for implementing the method. The texturing nozzle is brought from a working position into a threading-in position for threading-in, in which position a treatment chamber provided with slots and located upstream from the outlet opening of the texturing nozzle is subject to a vacuum for sucking in a thread brought to a position in front of the inlet opening of the texturing nozzle.

Abstract: A filter drum is screened off at the matted fibers take-off position on its interior face via a sealing membrane which is pressed by support sheets and a tightening element against the interior face. The drum is positioned within a housing whose interior is subjected to a suction force and is sealed off from the atmosphere by lip seals. A gap between a compression roll and a take-off roll is tightly filled by the compressed layer of matted fibers so that the entry of leakage air is prevented.

Abstract: The safety outflow device is provided in an end wall of a heatable godet and may be of a fusible type or pressure responsive type. The fusible safety device has fusible material which fills an outflow passage in a hermetic manner so that upon the occurrence of an excess temperature, the fusible material melts and permits exhaust of the vaporized medium. The pressure responsive safety device employs a burstable disc which bursts at a pressure corresponding to an overheated temperature so as to exhaust the heated medium.The safety devices serve as additional protection independently of manual and electrical means which may be provided.

Abstract: A drafting mechanism for a spinning machine containing a preliminary drafting zone and a main drafting zone is cleaned. There is provided an infeed roller pair comprising an upper roller and a lower roller, an exit or delivery roller pair comprising an upper roller and a lower roller, and an upper apron and a lower apron driven by an apron roller pair. The preliminary drafting zone extends between the infeed roller pair and the nip line formed by the apron rollers pressed against the upper and lower aprons, and the main drafting zone extends between this nip line and the exit roller pair. The lower apron extends beneath the preliminary drafting zone and the lower infeed roller. During operation of the drafting mechanism the lower apron is in grazing or wiping contact with the lower one of the infeed rollers. There is thus attained cleaning of the lower infeed roller and the lower apron without requiring special means for such cleaning.

Abstract: The cleaning machine for fiber material has an opening roller provided with clothing. The cleaned fibers are again removed from the clothing into a suction chamber by means of a screening member containing a screening wall provided with a nose. The invention improves the clean separation or detachment of the fiber material from the clothing in comparison with the known arrangements, avoids collection of fibers at the nose of the screening member, and, in particular, requires a smaller quantity of suction air in the suction duct leading away from the suction chamber. To achieve this the mutual spacing of the screening wall and roller envelope or outer surface increases in a direction away from the nose in the direction of rotation of the opening roller towards the rearward end of the screening wall.

Abstract: In order to avoid excessive wear between a sealing ring and a shaft, the sealing ring is provided with a biased sealing lip which is moved against the shaft by a pressure medium flowing into an infeed channel of the shaft. When not in use, the sealing lips are spaced from the shaft and serve to close off the pressure medium chambers of the feed device.In order to exhaust air, the flow of pressure medium is shut off to the feed device so that the sealing lips are sprung back against a projection of the device in spaced relation to the shaft. This permits the pressure medium to exhaust from the shaft through a gap between the shaft and the feed device.

Abstract: A textile machine is provided with a movable transport conveyor having Casablanca pins which convey packages on bobbins and a support member located in the path of movement of the bobbins for release of the bobbins from the pins. The support member serves to push the bobbins relative to the pins in order to effect a release of the bobbins from the pins. In addition, the support member cooperates with a transport conveyor which permits the released packages to be taken off to further processing equipment.

Abstract: A substantially U-shaped traveller and a substantially V-shaped traveller for ring spinning machines equipped with a substantially frusto-conical ring, each of these travellers having a guide or guiding portion which comprises externally a quadrant arcuate segment part and internally a substantially straight section or part.

Abstract: The thread catching and severing ring structure includes a ring element which is press fit onto a second ring element. The first ring element has a plurality of projections which overlie a groove on the second ring element. The projections and groove are sized so that a thread can be guided into the groove and thereafter into a gap between a land on the second ring element and a projection on the first ring element.

Abstract: A method and apparatus for opening fiber bales including a fiber removal element, compression means disposed upstream of said fiber removal element and advancing means near said compression means to advance the surface layer fiber material of a bale toward said fiber removal element.

Abstract: The thread catching structure is mounted on a chuck and includes a winding-on surface from which a thread winding may extend into a shaped recess under an overlying projection. The thread catching structure also has a clamping element which presses outwardly under centrifugal force against an underside of the projection to clamp the thread therebetween. Upon a subsequent severing of the thread, the resulting thread tail extending to the break location remains firmly clamped.

Abstract: For disturbance-free insertion of threads (49a-49d) into a winding device (2) and for simultaneously taking over the threads on the bobbin tubes (5), the threads (49a-49d) are placed, using a suction gun (74), from the eyelets (70) (thread guides) provided at the apex of the traversing triangle, onto thread guide pins (51) mounted on a shiftable rail, which for the insertion into the winding device (2) is located at the free end of the bobbin chuck. Subsequently these guide pins (51) move the threads (49a-49d), as the rail (48) is shifted back, into such a position in front of the catching means (6), that the threads (49a-49d) are taken over by stationary, but pivotably arranged thread guides (41 or 79 respectively), from the guide pins 71, and are brought jointly, using a further pivoting movement, into the catching means (6).

Abstract: The thread suction device has means for bunching a plurality of threads together adjacent to a nozzle opening so that the threads can be simultaneously and uniformly drawn into the suction nozzle.In one embodiment, the nozzle is moved in order to bunch up the thread prior to drawing in of the threads. In another embodiment, a guide on the nozzle is moved in order to bunch the threads up against the nozzle prior to drawing in of the threads.