Abstract: A yarn heating chamber is disclosed which is adapted for thermally processing an advancing yarn. The chamber comprises first and second members each having a discontinuity in the form of a groove, shoulder or the like in a surface thereof, and the members are movably mounted with respect to each other between an operative position wherein the discontinuities are positioned relative to each other to define a relatively narrow yarn passage, and a threading position defining an enlarged opening to facilitate threading. Also, heating means is provided for introducing saturated water vapor into the yarn passage in the operative position, and the surfaces of the two members are in substantial heat exchange relation in both the operative and threading positions, so that the temperature of the two members remains substantially constant during a yarn threading operation.

Abstract: A yarn heating chamber is disclosed which is adapted for thermally processing an advancing yarn. The chamber comprises first and second members each having a discontinuity in the form of a groove, shoulder or the like in the front surface thereof, and the members are movably mounted with respect to each other between an operative position wherein the discontinuities are positioned relative to each other to define a relatively narrow yarn passage, and a threading position defining an enlarged opening to facilitate threading. Also, at least one of the first and second members includes a rear surface which faces oppositely from the front surface of such member. Heating means is provided for introducing a hot pressurized vapor into the yarn passage when the members are in the operative position, and a portion of the hot pressurized vapor is directed into contact with the rear surface so that the hot pressurized vapor acts to bias the front surfaces toward each other to provide a firm contact therebetween.

Abstract: A pin feed mechanism (10) for transporting continuous stationery (11) having perforations (46) at both longitudinal edges thereof, in which transport pins (38) are arranged to engage with the perforations (46) and move the stationery (11) past a printing station. The pins (38) each have a tapered end to facilitate insertion of the pins (38) into the perforations (46). The tapered end of each pin (38) is shaped to have biconvex cross section, so that the curvature of its paper engaging surfaces has a constant radius of curvature along the length of the pin (38).

Abstract: A yarn false twisting apparatus is disclosed which comprises a pair of circular discs which are mounted for rotation about spaced apart axes, and such that portions of the surfaces are disposed in opposing face to face relation and define a twisting zone therebetween. In the operative position, one disc is resiliently deflected from its normal plane of rotation at the twisting zone by its engagement with the friction surface of the other disc, or a yarn passing therebetween, to thereby effectively engage and impart twist to the yarn. The bearing housings for the supporting shafts of the discs are held against movement with respect to each other during the twisting operation, and means are provided for automatically separating the housings and thus the discs in the event of a yarn breakage, to thereby avoid wear of the opposing disc surfaces.

Abstract: A motor-vehicle door has a generally annular door frame having an inner side and outer side respectively releasably connected to inner and outer door panels. A hinge is connected to one vertical edge of the frame between the sides and a latch to the opposite edge. A window pane is vertically displaceable in and above the frame and the mechanism for operating this window and for operating the latch are fixed to the inner panel. The frame is formed by a pair of frame parts together forming a tubular box-girder structure on the two upright sides and lower edge of the door for maximum rigidity.

Abstract: A yarn false twisting apparatus is disclosed which includes a pair of twist imparting discs, with the discs being mounted for rotation so that portions of the disc surfaces are disposed in opposing, substantially non-contacting relationship and define a twisting zone therebetween. The discs rotate in a common rotational direction, and a yarn is continuously advanced through the twisting zone in a direction parallel to a line extending perpendicularly between the axes of rotation of the two discs. In one embodiment, one of the discs is relatively thin and flexible, and there is further provided a pressure applying member which acts to locally bias the flexible disc toward the other disc at the twisting zone.

Abstract: A method and apparatus of false twisting a yarn is disclosed which utilizes a pair of endless belts mounted in crossing relation to define a twisting zone therebetween, and a pressure applying member for locally biasing at least one of the belts toward the other at the twisting zone. The yarn is advanced along a path of travel through the twisting zone, and the acute angle formed between each belt and the yarn path of travel is adjusted so as to generally correspond to the desired twist angle of the yarn in its twisted condition. Further, the speed of each belt is adjusted so as to optimize the yarn tension conditions both preceding and following the belts. To achieve an essentially slipless operation, the pressure exerted by the biasing means is adjustably controlled so that the torque exerted by the belts exceeds the natural restoring torque of the yarn.

Abstract: A yarn false twisting apparatus is disclosed which comprises a pair of circular discs which are mounted for rotation about generally parallel spaced apart axes, and such that portions of the surfaces are disposed in opposing face to face relation and define a twisting zone therebetween. In one embodiment, one of the discs is relatively thin and flexible, and such disc is resiliently biased toward the other disc only at the twisting zone. In other embodiments, both discs are relatively inflexible or rigid, and one disc is mounted to its supporting shaft by a gimbal-like interconnection and such disc is resiliently biased toward the other disc only at the twisting zone.

Abstract: A yarn false twisting apparatus and method is disclosed which comprises a pair of friction discs, with one of the discs being thin and flexible, and a pressure applying member for biasing the flexible disc toward the other disc locally at the twisting zone. The discs and pressure applying member are mounted to permit selective movement whereby the ratio of twist to yarn speed may be varied, and to achieve a desired twist in the advancing yarn. The biasing force of the pressure applying member is also adjustable, to achieve an essentially slipless operation by assuring that the torque exerted by the discs exceeds the natural restoring torque of the yarn.

Abstract: An apparatus for false twisting a yarn is provided which comprises, in one embodiment, a pair of endless belts mounted for rotation to define a twisting zone between opposing friction surfaces thereof. A pressure applying member is mounted adjacent the back side of each belt for biasing the belts toward each other locally at the twisting zone so as to firmly engage the yarn passing through the twisting zone and while the friction surfaces remain in substantially non-contacting relationship with respect to each other. The pressure applying member preferably utilizes an air cushion between the member and back side of the belt to minimize friction. In another embodiment, the apparatus comprises an endless belt in association with a disc mounted for rotation about an axis disposed perpendicular to the runs of the belt, and in a further embodiment, the endless belt is associated with a roller mounted adjacent the runs of the belt.

Abstract: A yarn false twisting apparatus is disclosed which comprises a pair of circular discs which are mounted for rotation about generally parallel spaced apart axes, and such that portions of the surfaces are disposed in opposing face to face relation and define a twisting zone therebetween. One disc is mounted to its supporting shaft by means of an elastomeric body member, which permits the disc to resiliently incline with respect to the axis of the shaft. A pressure applying member acts upon the back side of such disc to resiliently bias the same toward the other disc at the twisting zone.

Abstract: An apparatus for false twisting a yarn is provided which comprises, in one embodiment, a thin pliable disc mounted for rotation with a cooperating disc or roller to define a twisting zone between opposing friction surfaces thereof. A pressure applying member is mounted adjacent the back face of the pliable disc for biasing the disc toward the other member locally at the twisting zone so as to firmly engage the yarn passing through the twisting zone and while the friction surfaces remain in substantially non-contacting relationship with respect to each other. The pressure applying member utilizes an air cushion between the member and back face of the disc to minimize friction. Where two discs are employed, they may be mounted for rotation in a common direction, and such that the yarn may be guided through the twisting zone without passing between the axes of rotation of the discs.

Abstract: An apparatus and method are provided for applying liquid to a yarn running at high speed, and with a relatively low resistance being imparted to the yarn during the application. The apparatus includes a roller partially immersed in a liquid bath, and having a circumferential surface composed of alternating lands and grooves in the circumferential direction. Means are provided for rotating the roller and for guiding the running yarn tangentially across the top portion of the roller, and such that the yarn advances at a linear speed substantially greater than the peripheral speed of the roller. The yarn guiding means is adjustable to permit the extent of the contact between the yarn and the top of the roller to be varied.

Abstract: An improved means for mounting the induction coil of an inductively heated, rotatable godet about the magnetic core thereof so as to prevent internal overheating and preferably also to avoid any movement or play between the core and the coil as caused by heat expansion and vibration during operation of the godet. The improvement comprises cooling means for cooling the laminated pack acting as the magnetic core and for thermally isolating the pack from the coil and outer godet shell or casing, said cooling means including at least one hose-like tube wound around the laminated pack with means to conduct a fluid coolant therethrough. An elastic intermediate member is preferably introduced at some point between the coil and magnetic core in order to compensate for any unequal thermal expansion of these elements in the axial and/or radial directions.

Abstract: A method and apparatus is provided for producing a synthetic multifilament yarn having appearance, bulk and hand characteristics of conventional spun yarns of staple fibers while retaining strength characteristics of continuous filament yarns. The multifilament yarn is air jet textured to form loops, bows, coils and the like in at least the surface filaments thereof and at least some of these loops, bows, coils and the like only in the surface filaments are parted while the interior or core filaments remain substantially intact to form a yarn having free filament or fiber ends projecting from a substantially continuous filament core. The interior or core filaments are shielded or protected from being parted by false twisting the yarn (without heat setting the twist therein) to provide a substantially closed form with the interior or core filaments surrounded by the surface filaments and by parting the surface filaments while the yarn has twist therein.

Abstract: Devices and processes for feeding freshly spun and/or stretched filaments, which are delivered to the devices at more than 1000 meters/min., in helices to a receptacle, said devices embodying a rotating member with curvate passage extending from its upper inlet, which lies in the axis of rotation, to its outlet opening at a radial and axial spacing from the inlet, the axis of the outlet opening facing opposite to the direction of orbit thereof and the tangent of the passage's radially outer wall surface contiguous to said outlet opening forming an angle between 30.degree. and 80.degree. with reference to the radius, drawn through the outlet opening, of the circle of rotation of the outlet opening.

Abstract: An improved means for mounting the induction coil of an inductively heated godet about the magnetic core thereof so as to eliminate any movement or play therebetween in operation caused by heat expansion and vibration. The improvement comprises placing an elastic intermediate piece between the coil and magnetic core which compensates for any unequal thermal expansion of these elements. In the preferred embodiment of the present invention, the intermediate piece is constructed of a hose-like hollow chamber through which a coolant under pressure is circulated from an external source.

Abstract: Apparatus and process for thermal treatment of thermoplastic polymer multifile filaments embodying at least one stuffing chamber for forming at least one multifile filament into at least one tightly coherently packed filamentary body, feeding one or more of said filamentary bodies onto gas-permeable, slowly rotating drum on which it or they are conveyed in a side-by-side, spiral orientation by the rotating drum while a fluid, e.g., air is drawn through the filamentary bodies, said filamentary bodies being conveyed from the stuffing chamber at a constant rate and being deflected at a predetermined pitch angle before or during initial contact with the drum surface.

Abstract: A media positioning means for a printer having first and second transport mechanisms which are positioned in opposed relation with each other to form a common throat therebetween. Each of the first and second transport mechanisms includes first and second endless belts, a cross bar whose ends are secured to the belts, and grippers mounted on the cross bar to enable first and second record media inserted in the throat to be individually gripped thereby and positioned in side by side or overlapping relationship with regard to a print line in the printer.

Abstract: Heating apparatus for the heat treatment of synthetic yarns having a lower evaporator zone partially filled with a liquid, vaporizable heat transfer mechanism. The hot vapors of the medium heat a plurality of straight or convexly curved profile tubes having yarn contact surface or a plurality of thread guide tubes inside heating jacket tubes. The vapors are condensed in an upper condenser. Branch tube lines communicate the profile or jacket tubes with the evaporator and the condenser. One or more return lines return the condensate from the condenser to the evaporator. The evaporator has transverse baffle plate walls at spaced, axial intervals, which walls are at least substantially coextensive with the entire liquid-moistened portion of the evaporator zone for effectively damping any liquid pressure waves created in the evaporator. Recesses in the damper plate walls allow liquid flow between zones between respective baffle plate walls.