Abstract: A textile stuffer box includes a housing having an entrance and an exit, and including cooperating chamber-forming surfaces defining an internal crimping chamber for receiving and accumulating a length of yarn. An adjustable sliding gate defines at least one of the chamber-forming surfaces adjacent the exit of the housing. A set screw releasably locks a position of the gate to selectively enlarge and narrow the exit of the housing, such that selective adjustment of the gate operates to control axial compression of yarn accumulating inside of the crimping chamber.

Abstract: A texturizing apparatus comprising a drive housing having a false twist inlet to allow a plurality of yarns to enter the drive housing, a pair of opposing counter-rotating nip rollers positioned downstream of the false twist inlet, each nip roller having a circumferential drive surface adapted to engage the plurality of yarns and at least one circumferential spacer surface, and means for applying compression to one of the nip rollers to force the at least one circumferential spacer surfaces of the pair of nip rollers toward each other. The drive housing further having a drive outlet positioned downstream of the pair of counter-rotating nip rollers through which the plurality of yarns may exit the drive housing. The texturizing apparatus can also include a stuffer box having at least one movable flapper door and a box inlet positioned proximate the box inlet and of a size to allow the plurality of yarns to enter the interior of the suffer box.

Abstract: The instant invention is a stuffer box crimper and a method for crimping. The stuffer box crimper according to instant invention includes a pair of nip rollers, a pair of doctor blades, and a stuffer box. The pair of doctor blades is adjacent to an exit end of the pair of nip rollers. The stuffer box includes a stuffer box channel adjacent to the pair of doctor blades, and the stuffer box channel includes a surface consisting of a hard material having a hardness of at least 60 Rc. The method of crimping according to instant invention includes the steps of (1) providing a stuffer box crimper including a stuffer box having a stuffer box channel including a surface consisting of a hard material having a hardness of at least 60 Rc; and (2) crimping via the stuffer box crimper.

Abstract: Method and apparatus for texturing yarns that encompasses, after stopping the moving yarns during normal operations, increasing the opening size of the outlet of the stuffer box, and injecting a fluid through the interior of the stuffer box. The fluid entrains some of the yarns remaining within the interior of the stuffer box to move at least a portion of the yarns outside of the stuffer box.

Abstract: A method is disclosed for producing polyester fibers having uniform primary and secondary crimps. The method includes the steps of advancing fibers into a stuffer box having an upper doctor blade and a lower doctor blade, positioning the upper doctor blade and the lower doctor blade such that the doctor blade gap is broad enough to permit the formation of secondary crimps and yet is narrow enough to maintain primary and secondary crimp uniformity, and then applying a longitudinal force against the advancing fibers to impart uniform primary and secondary crimps.

Abstract: A device for texturizing continuous filament threads including plates in a crimping part which have a prolongation at both ends thereof, with the prolongation being located centrically-symmetrically, however offset, relative to each other and have rounded end faces thus permitting reversing the plates upon wear of one end face thereof, thus increasing their service life.

Abstract: A layered yarn package is formed of continuous filament yarn wads wherein the yarn alternates between compacted an extended lengths by axially compacting the yarn into a length, segmenting the length into alternating extended and compacted lengths then arranging the compacted lengths in a common axial direction one next to the other to form a layer. The layer may be compressed. One or more layers may form the package.

Abstract: Novel construction of a stuffer box crimper by means of multiple precision ground plates held together in side-by-side contacting relationship and dowel-aligned so that the crimper rolls and other movable components are readily and properly aligned.

Abstract: A process for stuffer box crimping of a yarn of synthetic thermoplastic filaments wherein the discharge resistance on the yarn plug formed in the stuffing chamber is increased or reduced in response to a continuously measured value of advancing pressure of the yarn plug within the stuffing chamber, preferably in response to the frictional force between the yarn plug and an axially movable inner wall surface of the stuffing chamber. Suitable measuring and control means may be provided to increase or decrease the discharge resistance in response to the difference between the measured value of the advancing pressure and a predetermined constant value.

Abstract: A method and apparatus for producing texturized multifilament yarn or the like which includes a control arrangement for controlling the length of a yarn plug in a bulking chamber and accumulating tube so that the processed yarn can be removed at a constant speed by a yarn take-up unit.

Abstract: A cheekplate holder assembly for use in a stuffer box crimper for continuous filament tow, with the cheekplate and its holder assembly as a unit being safely and readily removable from and reinsertable into the stuffer box crimper and the cheekplate movable into operative position against the endfaces of the feedrolls of the stuffer box crimper without stopping the rotation of the feedrolls.

Abstract: Thermoplastic yarn is texturized by the known method of forwarding it in a heated condition to a crimping zone at the entrance of a stuffer chamber (7) so as to form a plug (8) of crimped yarn within the chamber and withdrawing the yarn from the other end of the plug at a speed which is related to the input speed. The improvement comprises deriving signals from the speed of the yarn plug (8) in the stuffer chamber (7) by means of a sensing wheel (11) which drives a gapped monitoring disc (13). The disc (13) operates to intercept a beam of light from a source (14) which is directed on to a photo-sensor (15). The output of the photo-sensor is supplied to an electrical controller (36) which measures the time during which light is received for each gap in the disc (13) to provide a measure of the speed of the yarn plug.

Abstract: An improved outlet apparatus for a bounce crimper is disclosed which includes a restrictor assembly provided with a bore and an internally mounted flat leaf spring. Extending beneath the leaf spring, a longitudinal slot may be provided through which a texturized multi-filament yarn of synthetic resinous material may be drawn in a reverse direction back into the restrictor assembly without entanglement and deformation of the flat leaf spring when the feed yarn is tangled.

Abstract: A textile material such as a fabric in an endless rope form is fed to a treatment enclosure, through which it is positively and continuously carried at a controlled speed lower than the speed at which it is fed into the enclosure, thereby causing the formation of folds in the textile material. Simultaneously, the folded textile material is continuously submitted to compression in a direction transverse to the longitudinal direction of its advancement through the enclosure.

Abstract: Apparatus and method for stuffer box crimping yarn is disclosed in which continuous filament yarn having a thermoplastic component and varying in denier along its length is substantially uniformly drawn and then treated in the same crimping area and where that portion of the yarn of higher denier is texturized to a lesser extent than that portion of the yarn of lower denier. The apparatus for carrying out the method provides a crimp site and a very short plug guiding area which establishes the lateral width of the plug. A pair of pressure shoes are oppositely disposed on either side of the plug of crimped yarn as it leaves the guiding area.

Abstract: Apparatus for compression crimping fibrous material, such as synthetic continuous filament yarn, is provided comprising means defining a compression crimping zone, means for feeding fibrous material into the compression crimping zone and a pair of movable members each having a face substantially opposed to a face of the other, said faces defining lateral walls of the zone and being biased toward each other to restrict egress of the fibrous material from the zone and thereby exert a back pressure on the fibrous material, causing the fibrous material to buckle, form a plug in the zone and thereby crimp in the zone, the aforementioned face of each of the members being laterally restricted by means rigidly connected to the member whereby the plug is prevented from escaping laterally from between the substantially opposed faces of the members.

Abstract: Apparatus for compression crimping is provided comprising means defining a compression crimping zone, means for feeding fibrous material into and means for withdrawing crimped fibrous material from the compression crimping zone, at least one movable member defining a lateral wall of the zone and being biased toward the fibrous material to restrict egress of the fibrous material from the zone and thereby exert a back pressure on the fibrous material, causing the fibrous material to buckle and thereby crimp in the zone, control means for acting on at least one of the fibrous material feeding means and fibrous material withdrawing means, preferably for deactuating both, in response to displacement beyond a predetermined extent of the movable member in a direction opposite to the direction in which the movable member is biased, and means for sensing the presence of the plug at a predetermined position in the zone and for regulating at least one of the fibrous material feeding means and fibrous material withdrawal