Abstract: A method is described for monitoring and controlling the texture level of a yarn produced in a moving cavity texturing apparatus. The texture level of the yarn is controlled by monitoring fluid pressure in the cavity. The pressure is used as a feedback signal for control of the texture level of the yarn.

Abstract: Textile strands are dyed while being bulked or crimped by lengthwise compression. The dyestuff advantageously is supplied in finely divided liquid or preferably solid form and is injected, as by aspiration or by positive pressure methods, into fluid hot enough to vaporize it before such fluid together with such dyestuff comes into contact with strand so treated. Such strand, forwarded with or by flow of hot propellant fluid into a foraminous region in which the strand is confined laterally but from which the fluid may escape except where the strand is compressed into a compact mass, is exposed to the dyestuff by permeation with such fluid. Lateral escape of the propellant fluid is effected, preferably before such exposure, and is utilized to control an operating condition, such as temperature of strand input into and/or speed of removal of strand from the chamber, for improved uniformity of dyeing and bulking or crimping of the strand.

Abstract: Apparatus for the continuous delivery of a yarn or the like in loose form, comprising a rotatable flyer for inserting the yarn into the flights of at least two rotatingly driven screw spindles which are retained in cantilevered and axially parallel configuration, axially parallel reversing pins being disposed between the spindles, wherein the axes of rotation of the spindles and of the reversing pins extend substantially horizontally and wherein the reversing pins extend beyond the free ends of the spindles into guide rods on which yarn loops, which are delivered from the free spindle ends and are suspended substantially perpendicularly, are gradually advanced by mutual interaction.

Abstract: Textile strands are bulked or crimped by lengthwise compression, accompanied by flow of propellant fluid, into a foraminous region in which the strand is confined laterally but the fluid may escape except where the strand is compressed into a compact mass. Lateral escape of the propellant fluid is utilized to control an operating condition, such as temperature of strand input into and/or speed of removal of strand from the chamber, for improved uniformity of bulking or crimping.

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: In apparatus for compression crimping fibrous material, such as yarn, comprising a chamber for receiving the yarn from a pair of feed rollers and in which chamber the yarn is compressed, the chamber having corners intercepted by the periphery of the rollers adjacent the sides; there are provided guiding ramps adjacent the nip of the rollers to keep the yarn away from the corners as the yarn advances from the rollers into the chamber.

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