Abstract: In an individual-spindle-drive type multiple twister that directly employs separate motors to drive the spindle shafts of each twisting unit, when a spindle is inserted into the housing during motor assembly, a rotor and a stator may attract each other and adhere to each other, and this attraction may prevent the spindle shaft from being correctly inserted into a target bearing, thus making it difficult to assemble the motor. A spindle shaft 4 is rotatably supported by bearings 27a and 28a mounted onto upper and lower supporting members 27 and 28. The distance A between the lower end of the rotor magnet 32 of the drive motor 10 fixed to the spindle shaft 4 and the lower end of the spindle shaft 4 is longer than the distance B between the upper end of the stator coil 31, which is fixed to the housing 34 of the drive motor 10, and the bearing 28a of the lower supporting member 28. In addition, the tip 4 of the spindle shaft 4c is tapered to facilitate insertion.

Abstract: Device to automatically cut the slubbing, or spinning sliver, (11) of a yarn being worked, the device being used in any textile machine whatsoever and comprising a cutting assembly and sensor means (18) functionally associated with the cutting assembly, the sensor means (18) being suitable to detect the presence or absence of the yarn (11a) downstream of the draft and to activate the cutting assembly at least when they do not detect the presence of the yarn (11a), the cutting assembly comprising a support with which a blade is associated, the blade being movable with respect to the support to selectively assume an inactive position of non-interference with the slubbing (11) passing through or a cutting position in which it abuts against a contrasting element to cut the stubbing (11) transversely, the cutting assembly (17) comprising an electromagnet (21) and a magnetic element (35) suitable to cooperate with the movable blade (26) to keep it constrained to the core (21a) of the electromagnet (21) to assume th

Abstract: A machine for making a mixed yarn by combining two false-twist textured yarns is disclosed. The machine comprises drawing systems (3A, 3B; 8A, 8B) arranged on either side of the texturing area and mounted alternately on two separately controlled parallel, shafts, and heat treatment units (5A, 5B) located in the false twisting area and having a temperature controlled by two mutually separated systems. The false-twist spindles (7) are power spindles with a speed that may be varied to suit each kind of yarn. The machine comprises joining device (9) for interlacing two yarns from two different texturing positions, the device being arranged, when seen from the front, between the positions so that the two yarns (2A, 2B) follow identical paths before being joined.

Abstract: An apparatus and method for interrupting delivery of sliver to a spinning frame for spinning sliver into yarn and winding the yarn onto a spindle utilizing a sliver stop motion. The sliver stop motion is positioned on a respective drafting system of the spinning frame. The sliver stop motion is mounted to the spinning frame so as to overlie the back drafting rolls for stopping the motion of sliver being drafted by the back drafting rolls responsive to a break in yarn being wound onto the spindle. The stop motion includes an elongate pivoting member which is pivotally mounted to a frame mounting member. The frame mounting member is pivotally mounted to the spinning frame. At the stop motion's proximal end, a yarn contact member extends outwardly therefrom so as to underlie and slidably contact yarn being directed to the respective spindle. A sliver comb is connected to and extends outwardly from the distal end of the elongate pivoting member so as to overlie sliver being drafted by the back drafting rolls.

Abstract: A yarn spindle is provided having a housing, a spindle drive shaft rotatably mounted in the housing, and a cylinder fixedly attached to the spindle drive shaft. The cylinder includes a downwardly extending circumferential skirt, with the skirt and the spindle drive shaft defining an annular space between them. The skirt has a bottom edge with at least four thread cutting slots disposed therein, the slot being a substantially rectangular notch through the thickness of the skirt. The at least four thread cutting slots are equally spaced about the bottom edge. The spindle also includes a waste thread spool statically mounted on the housing for shielding the spindle drive shaft against contact with waste yarn. The waste thread spool includes a frusto-conical barrel having a top end, a bottom end, an axial hole, and an inclined outer wall. The outer wall is angled approximately 30 to 35 degrees from the vertical and has a substantially vertical groove formed therein.

Abstract: When an open-end rotor spinning device is stopped, a short yarn end is produced. For this, and in synchronization with the interruption of fiber feeding to the opener device (116), the fibers which continue to be combed out of the leading end of the fiber sliver (2), as well as the fibers still present in the clothing of the opener device (116), are prevented from continuing to accumulate on the fiber collection surface (136) of the spinning rotor (13). To carry out this process, the device (115) for the stoppage of the fiber feeding device (110) is connected to a control device (3) by means of which a device (134, 135, 172, 173) for the shortening of the yarn end can be switched on temporarily as the spinning device (11) is stopped.

Abstract: A method and apparatus for automatically removing a slub from spun filament yarn and a sliver or roving of staple fibers. The sliver or roving of staple fibers are fed through a drafting apparatus to prepare a continuous bundle of staple fibers. The filament yarn is pretensioned such that a texture is temporarily substantially removed. The continuous bundle of staple fibers and the filament yarn are combined downstream of the drafting apparatus. The combined continuous bundle and the filament yarn are fed into a spinner. The spun filament yarn and staple fibers are monitored to detect imperfections of a predetermined magnitude. A first signal is generated upon detection of an imperfection of the predetermined magnitude. The feeding of the staple fibers is stopped in response to the first signal. The core yarn is clamped at a predetermined position in response to the first signal.

Abstract: A textile machine for processing sliver includes a plurality of work stations disposed side by side. Each of the work stations has a respective fixedly assigned parking place. Sliver cans are each disposed on a respective one of the parking places behind one another in at least two rows for supplying the work stations with sliver. An automatic can changer replaces any of the sliver cans that have become empty with filled sliver cans. A device monitors contents of the sliver cans and recognizes a sliver interruption when the sliver cans are still partly full. The work stations have sliver delivery devices and the work stations include given work stations. The sliver delivery devices of the given work stations each have a device for permitting sliver supply to a respective one of the given work stations only from a sliver can located on the fixedly assigned parking place of the respective one given work station.

Abstract: A stop motion device for a textile strand processing machine including a sensor positioned between a supply package and a take-up package for sensing the presence or absence of a strand within a defined sensing range of the sensor and a strand breaker positioned between the supply package and the sensor. The strand breaker includes a pivot for pivotally mounting the strand breaker for movement between an inoperative position in disengagement with the strand and a strand breaking position in engagement with the strand. The pivot is positioned with relation to the path of movement of the strand for pivotal movement of the strand breaker in the direction of movement of the strand and towards and into the path of movement of the strand for breaking the strand upstream of the take-up package. A release cooperates with the sensor and the strand breaker for releasing the strand breaker when the sensor senses the absence of a strand within its sensing range.

Abstract: In an arrangement for producing packages used as feeding packages for a subsequent twisting operation and containing two yarns wound up side-by-side, it is provided that the yarns are monitored with respect to a yarn breakage and, in the case of the occurrence of a yarn breakage, are cut and connected with one another at a common point before moving onto the package.

Abstract: A monitoring needle (19) is rotatably mounted under spring tension in a housing (18). A light emitter/light receptor device is fixed to the housing (18) in the plane of the thread (5) and in the pivotal region of the monitoring needle (19), this device producing a control signal both in the case of irregularity in the thread and when crossed by the monitoring needle.

Abstract: In a process for producing packages used as feeding packages for twisting, onto which two prestrengthened yarn components are wound side-by-side as a double yarn, it is provided that, when one of the two yarn components breaks, the other yarn component is cut in such a manner that the lengths of the two yarn components are at least approximately the same. As an alternative, it is provided that, when one yarn component breaks, the partially completed package is stopped, before the broken end has moved onto the partially completed package.

Abstract: An apparatus for supporting a stop member of a stop motion device of a textile ring spinning machine is provided. The apparatus includes a carriage having a cam portion for removably receiving and manipulating the projecting cam follower portion of the stop member, a device for reciprocating the carriage and a device for releasably positioning the carriage on the reciprocating device in a predetermined position. The carriage is disengagable from the positioning device for movement therefrom sufficiently to permit removal and replacement of the stop member from the carriage and is reengagable with the positioning device for positioning the carriage in its predetermined position. Preferably, the carriage and the positioning device each includes cooperatively configured portions for releasable interengagement with one another to position the carriage in its predetermined position.

Abstract: Controlling the stop of the feed of roving in a spinning machine in which yarn is wound on spindles through travelers rotating on rings and in which a stop motion is actuated to stop the feed of the roving to drafting rolls in response to detecting a yarn break and is subsequently deactuated to permit roving feed during a yarn break repair operation. The stop motion includes an arcuate stop member rotatably mounted on one of the drafting rolls for rotation into disposition between opposing rolls to separate the rolls and stop roving feed, with the stop member having a projecting cam engaging in a recess in a slide member that is manipulated by a spring and electromagnetic device to control manipulation of the stop member.

Abstract: The spinning or twisting machine comprises a plurality of drafting rolls, a plurality of associated spindles and positioned between them a plurality of yarn breaking devices pivotable between an upright spinning machine operating position into a yarn breaking position. According to our invention the yarn breaking device is movable by a positioning device from its yarn breaking position into an operating position.

Abstract: A clamp is disclosed to be mounted on a yarn spinning machine and, if a roving of the yarn should break, serves to clamp the roving preventing it from further unravelling. The clamp comprises a housing body including a member for defining a passage guide for the roving and a blocking element mounted by the housing body to be moved by a biasing spring from a detained position to a roving clamping position. A sensor is provided to sense the breakage of the roving for actuating an electromagnet for releasing a lever that normally engages and holds the blocking member in its retained position, whereby the blocking element is moved by the spring to it's clamping position to thereby retain and clamp the roving against the member. A guide channel is attached to the housing body and further supports a fastening mechanism for mounting the clamp to the spinning machine.

Abstract: Rapid cut-off apparatus for high speed moving yarn whereupon any excessive force exerted upon the yarn causes the apparatus to be triggered into a yarn cut-off operation with the apparatus being accelerated to the speed of the moving yarn upon frictional engagement of the cut-off blade of the apparatus with the yarn.

Abstract: A spinning machine is provided with a thread monitoring device having a light source and a light sensitive cell to sense the thread running to a spindle from the front exit rollers. The thread monitor is formed of two parts, each having a housing arranged on either side of the thread. Within each housing is the light source and the light sensitive cell. The housings are each detachably connected to a slider which is adjustably held in a guide support that can be swivelled and locked in a carrier which is secured to the free end of a support rail running alongside and parallel to the roller supporting arm.

Abstract: The apparatus for producing two-component thread comprises a twisting mem to which the two components of the two-component thread are fed, and means for severing one of the components as the feed of the second component ceases, including a hollow cylinder operatively connected to a drive and having an annular slit made therein, with at least one flat knife accommodated in the internal space of the cylinder in the area adjoining the annular slit.

Abstract: A draw frame for a spinning machine is provided with roving blocking mechanism associated with its inlet rollers actuable on rupture of the remittant thread to arrest movement of the roving and is further provided with a sensor for detecting the continuity of the roving being fed from a source of supply and a roving clamp situated between the sensor and the blocking mechanism. The blocking mechanism and the roving clamp are arranged to be simultaneously operated in response to a signal from the sensor or in response to rupture of the thread.

Abstract: Apparatus for use in combination with a traveling unit including sensor and remote actuator means to interrupt supply strand feeding to drafting systems of a textile spinning machine. A collar means is rotatably mounted on an elongate strand guide and one side thereof serves as a strand engaging surface. An abutment member mounted on the strand guide serves as the other of the strand engaging surfaces. Means are provided for moving the strand engaging surfaces longitudinally along the elongate strand guide and into a proximate relation with one another upon the sensing of a broken yarn so as to pinch the supply strand and thereby interrupt feed of the supply strand to the drafting system.

Abstract: A device attached to a spinning or twisting machine, designed to monitor the integrity of two threads merging under tension into a yarn, has a carrier swingable about a horizontal axis and provided with a thread guide, such as a pair of parallel pins, bracketing the yarn downstream of the merger point. A rupture of either thread lets the carrier rotate, e.g. by gravity, from an unstable normal position by half a turn into a stable off-normal position to impede the advance of the remaining intact thread whereby the latter also breaks. Such action, however, is prevented when the yarn is under reduced tension, as during shutdown or startup of the machine, by a locking mechanism arresting the carrier in its normal position. The locking mechanism may include an electromagnet whose winding can form part of a circuit signaling the displacement of the carrier into its off-normal position in response to a thread break.

Abstract: Apparatus for use in combination with a traveling unit including sensor and remote actuator means to interrupt supply strand feeding to drafting systems of a textile spinning machine. Interruption is accomplished through the cooperation of an elongate strand guide and a rotatably mounted collar including a longitudinal projection. Upon rotation of the collar, the supply strand is pinched between the collar projection and the elongate strand guide causing strand breakage.

Abstract: A device for cutting fed yarns at a suitable position in quick response to the breakage of the yarn when a plurality of yarns are arranged and twisted together in a twisting frame. A first cutter which is operated by a detecting device and cuts the yarn on the yarn feeding side and a second cutter which is operated by the detecting device and cuts the yarn on the yarn taking out side of the twisting frame.

Abstract: The passage of material through a textile spinning or twisting machine is regulated through operation of a control element associated with the movement of said material. Light reflected from the moving material is converted into a variable electrical signal which is then modulated and used to operate a light-emitter. The modulated output of the light-emitter is sensed by a receiver located remote therefrom, but in direct-line-of sight, into an electrical command signal for operating the control element.

Abstract: A device attached to a spinning or twisting machine, designed to monitor the integrity of two threads merging under tension into a yarn, has a carrier in the form of a disk or a stem rotatable about an axis and provided with a thread guide such as an eyelet, or a pair of pins parallel to that axis, bracketing the yarn downstream of the merger point. A rupture of either thread, detected by a separate sensor or by one of the bracketing pins, generates or releases a force which rotates the carrier around its axis by about half a turn to impede the advance of the remaining intact thread whereby the latter also breaks and the machine is stopped automatically, or manually in response to an alarm signal.

Abstract: A device for detecting a break in one of two tensioned threads merging into a yarn comprises a support on which a guide member with two yarn-bracketing pins is pivotable about a horizontal axis. The guide member is provided with a hole penetrated by a stud of smaller diameter having a head with two or more chordal ridges of different peripheral widths each of which, when brought into a horizontal position above the stud axis, contacts a rabbet on the guide member disposed below its center of gravity to hold that member in a metastable position from which it is dislodged by a difference in the tensions of the two threads. When that difference surpasses a certain threshold, upon rupture of one of the threads, the guide member tilts into an unstable position from which it gravitates through substantially half a turn into an inverted stable position, thereby entangling the remaining intact thread with its pins and inhibiting the advance thereof so that it, too, will rupture.

Abstract: A two-for-one twisting spindle has a compressed-air-actuating device which is disposed in the region of the hollow axle (21) of the spindle (1) above the spindle rotor, and which influences the run of the yarn and to which a compressed-air passage (29), extending through a stationary part (7) of the spindle, leads, in order to prevent the yarn from being drawn through the hollow axle of the spindle in the event of breakage of the yarn. The compressed-air-actuated device is a compressed-air-cylinder (27) whose axis intersects the hollow axle of the spindle at right angles thereto and whose outer wall has two openings (25) which are located diametrically opposite one another and which are in alignment with the hollow axle of the spindle, and a piston (26) which is displaceable within the compressed-air cylinder and whose rear end is subjectable to compressed air for the purpose of clamping (FIG. 1), or cutting (FIG. 5) through the yarn.

Abstract: A bearing rail is provided extending along each side of the draw frame and spaced laterally from the outer edges of the double upper rollers. At the end of the each rail, in the area when the thread exits from the exit rollers, each rail is provided with two carriers, one of which is provided with a light source and the other which with a light receiving photo-cell. The light source on one side of the drawing frame is arranged in association with the thread being drawn adjacent the photo-cell on the other side so that the light source causes this remote thread to cast a shadow on the photo-cell adjacent to it. Similarly the light source on the other side, the thread remote from it and the photo-cell opposite it are also aligned. The shadow on each photo-cell produces an alternating current which is then independently fed to a circuit and switch means, housed at the inlet end of the bearing rail.

Abstract: A spinning frame is provided with a fiber break guard having a fiber guide which as a consequence of the breaking of one of the individual fibers is displaced to cause the breaking of the other fiber. For a certain and rapid breaking of the remaining fiber, the displacement of the fiber guide caused by the remaining fiber, or at least the displacement of an associated member causes a pinching of the remaining fiber in a clamping device or the activation of a fiber separation device for cutting through the remaining fiber.

Abstract: A ring spinning machine for spinning yarns comprised of finite length fibers has a plurality of spinning locations for combining two untwisted textile strands into a yarn to which a twist is imparted prior to winding up of the yarn. A sensor is associated at each spinning location which reacts to a break of one of the two fiber strands and causes an interruption of the spinning of the yarn. The sensor is designed to sense a characteristic of the yarn which changes in a manner recognizable by the sensor when the yarn is only being spun from one of the two fiber strands and an interrupter is provided which acts in response to the signal from the sensor to interrupt the spinning of the yarn upon the detection of a strand break.

Abstract: A yarn stop-motion device for use with a yarn-processing apparatus comprising yarn break-detector means, yarn cutting means and yarn guide means positioned close to each other and combined in a single unit. This device is characterized in that the yarn guide means releases the yarn into the yarn cutting means upon detection of a yarn break by said yarn break-detector means.

Abstract: The control arrangement is used in conjunction with a textile machine at which a thread or a filament, respectively, supplied from a creel package is guided via a roll, around which it forms a plurality of windings, to a thread guide eyelet and to a ring spindle system. The invention aims at the reliable elimination of any danger of lap-up formation on the roll including the danger of lap-up formation caused by unwinding the thread from a take-up bobbin (unwinding "overhead" from the take-up bobbin). The control arrangement comprises a first thread severing element which severs the thread upstream from the roll, and a second thread severing element which severs the thread along the unwinding path between the roll and the take-up bobbin.

Abstract: A strand break-out device for preventing the formation of the fault yarns due to strand breakage when two unspun fibrous strands are spun on a common twisting spindle. A member (24) has pins (38) forming a passage means to which the strands converge during travel to the spindle and on which the strands may bear to apply force to the member. The member is pivotally mounted on a support (28) so that it may move freely on the support between limits of displacement from a mean, stable disposition. If a strand breaks the force applied by the remaining strand moves the member beyond the respective limit whereupon the member moves to a further position wherein the pins distort the path that the remaining strand would otherwise take. This distortion is such as to cause the remaining strand to break.

Abstract: Apparatus and processes for breaking out a residual strand where one strand breaks in a strand combining operation. The invention makes use of the change in the line of travel of the residual strand to effect break out in the new line of travel.

Abstract: A method for terminating the spinning operation in a spinning machine having a loosening-up and a feeding device for slivers, includes the steps of running a sliver having a substantially full cross section with a substantially uniform count over the entire length thereof through the sliver feeding device and the fiber loosening-up device, and cleanly cutting the sliver transversely immediately upstream of the feeding device in direction of feed of the sliver; and device for performing the foregoing method.

Abstract: A cutting arrangement for a filament monitoring system for use in a draw-twister and the like comprises a gripping member, a cutting member and an intermediate filament guide, all of which are mounted on a spring actuated slide. Actuation of the slide causes the gripping member and cutting member to grip and cut the filament, the filament guide maintaining the filament in proper position.

Abstract: Apparatus and method for interrupting and holding a running textile yarn unwound over-end from a yarn supply. The invention may be combined with yarn break detectors for use with synthetic yarn drawtwist machines.

Abstract: Apparatus and processes for breaking out a residual strand where one strand breaks in a strand combining operation. The invention makes use of the change in the line of travel of the residual strand to effect break out in the new line of travel.