Abstract: To piece up a yarn in a friction spinning device, fibers supplied to a yarn formation position of a friction spinning drum are twisted to form a twisted fiber structure until the latter has sufficient strength for grasping by a suction device moved towards the twisted fiber structure end opposite to yarn withdrawal. The suction device grasps this end and stops such twisted fiber structure. Further fibers wound about the now substantially stationary twisted fiber structure strengthen the so it can be withdrawn by the suction device. Due to such withdrawal and constant further supply of fibers, a yarn-like structure is formed adjoining the twisted fiber structure and such yarn-like structure is also withdrawn. To subsequently again form the actual yarn, withdrawal rollers are engaged so the yarn produced at the yarn formation position is withdrawn at production speed or with a reduced speed still sufficient for forming a yarn.

Abstract: A splicer device for making a splice between two yarns by the mechanical removal and recomposition of twists having rings to untwist and retwist yarn, grippers to pluck and/or tear excessive yarn tail ends and form small retaining yarn tails, and any of an adjustable cam to separately condition untwisting and retwisting, a spacer to keep the surfaces working on the yarn at least for a moment a distance apart, movable portions on the grippers that move in opposite directions, and a tensioner to permit drawing action.

Abstract: To the purpose of obtaining the joining of textile threads, by means of a splice accomplished with compressed gas, by a short, strong joint of nearly imperceptible appearance, a method is proposed, which includes the following steps: inserting the two threads to be joined through a longitudinal slit in a splicing chamber provided in a head having two parallel opposite side walls perpendicular to the longitudinal axis of the chamber, in correspondence of which walls there are side outlets; substantially closing the side outlets of the chamber and at the same time locking the threads entering the chamber through its related side outlets, against the respective side walls of the head, but leaving free and unlocked the cut tails of the thread coming out of the outlets; and subjecting the thread lengths enclosed within the chamber to at least one burst of compressed gas blown into the chamber, the gas escaping through a port provided in the head transversely to the longitudinal axis of the chamber.

Abstract: A method of yarn piecing by splicing in a fasciated yarn spinning unit is disclosed herein, according to which an end of a fleece to be lapped over a broken end of a yarn is formed by stopping a preselected pair of drafting rollers and, if any, its preceding pair or pairs of drafting rollers, in response to a yarn-break signal. After a fleece end is thus prepared, the front top drafting roller is lifted from its bottom counterpart, and a broken yarn end on the yarn package is brought reversely through the false-twisting nozzle and on through a gap formed between the separated top and bottom rollers of the front pair. In order to allow the yarn end to overlap with the fleece end over the desired length, the lifted front top roller is brought back into pressing engagement with its bottom roller in close relation to the time at which the nip of the front pair of drafting rollers is reached by the fleece end which is advanced by restarting the previously stopped drafting rollers.

Abstract: A compressed air thread splicing device for producing a knot-free thread connection by splicing includes a splicing head having a splicing channel formed therein with two at least partially open ends for receiving threads to be joined in a given insertion direction and for alternately tangling, intertwining, swirling and winding fibers of the threads around each other, the splicing head having at least one compressed air inlet orifice formed therein leading into the splicing channel, the splicing head having at least one flow-channel formed therein branching off from the splicing channel transverse to the given insertion direction between the at least one inlet orifice and one of the ends of the splicing channel, and a switchable device connected to the at least one flow channel for generating a temporally limited current in the at least one flow channel in a flow direction away from the splicing channel.

Abstract: A make-ready device for making a thread end ready preparatory to tying it to another thread end in a thread tying device, the make-ready device including s hollow body open at opposite ends thereof and traversible by a gas flow for receiving the thread end therein so as to at least partly stretch and parallelize the fibers of the thread end and cleanse them of short fibers, as well as for retaining the thread end therein, the gas flow being generated by an injected pressurized gas current, and pneumatically operative means conducting the injector gas for guiding the thread end in a central region of the inner hollow space of the hollow body.

Abstract: The compressed-air pipe (20) leading to the splicing chamber (1) of the yarn splicing device encloses a humidification tube (30) which opens into this compressed-air pipe and which proceeds from a container filled with liquid (24) in which the liquid level is below the aperture (5) of the splicing chamber (1).

Abstract: A compressed-air thread splicing device for producing a knotless thread connection by splicing, the device having a splicing channel for receiving therein threads to be spliced to one another, the splicing channel being formed with at least one compressed-air injection opening and affording at least one of a plurality of operations to be performed on the fibers of the threads consisting of tangling, hooking, whirling and entwining the thread fibers mutually includes a first device for forming a thread guide contour edge at one end of the splicing channel, and a second device for forming a thread guide contour edge at the other end of the splicing channel, the thread guide contour edges partly covering a respective outlet and inlet of the splicing channel, and a controllable device for holding at least end fibers of ends of the threads in friction contact with at least one of the thread guiding contour edges during the splicing operation.

Abstract: Device for splicing yarns together by subjecting the superposed ends of yarns to the action of a compressed fluid. A fluid supply system of a fluid treatment section having a yarn splicing member for making a jet of a fluid act on the overlapping section of two yarn ends, and untwisting nozzles for untwisting the yarn ends, and a functional system of a yarn end control unit for cutting and locating the yarn ends are connected to a single driving source.

Abstract: An improved, reduced tension, automatic yarn sampling device, and a process for its use, is disclosed. The device exerts significantly lower tension on multifilament yarn thread than that tension typically required to approach the deformation yield point of partially oriented yarn.

Abstract: Improvements to procedures for the splicing of yarns (20-21), whether textile or not, the splice being obtained by coupling two single untwisted yarns (20-21) and re-imparting the twists thereafter, in which improvements a part of the single yarns is untwisted until twists of a sign opposite to the original sign have been imparted, and such part is then coupled and small tails (220-221) are obtained, and the coupled segment is then retwisted by imparting a desired twist, such small tails (220-221) being obtained after a substantial parallelization of the fibres to be plucked and/or torn (42) and after a successive plucking and/or tearing action (40) along the axis of the yarns, the tapering (320-321) of such tails (220-221) reaching the neighborhood of the periphery of the retwisting rings (28), the resulting tails (220-221) being controlled and positioned alongside the yarns (21-20) before the beginning of such action to impart such desired retwisting, at least part of the segment of yarn being untwisted und

Abstract: The invention relates to a process for piecing on a machine for producing core spun yarns, said process comprising the following successive steps of: taking off a broken end of a core spun yarn formed from the receiving member, (for example a reel); exposing the internal core of said yarn over a pre-determined length; connecting the core thus exposed with the end of the elementary core yarn; introducing the bared core into the fiber distribution system; distributing the fibers on the core downstream of the point of join; and advancing and winding normally. The invention also relates to a device for carrying out this process.

Abstract: A noise control system for reducing the noise level emanating from an air jet spinning machine includes an acoustical door for covering a jet chamber which contains the air jets. The door is automatically opened whenever a yarn suction tube is to be inserted into the jet chamber for a threading-up operation.

Abstract: The invention consists of a splicer device to disassemble and recompose yarn mechanically, whereby the splicer device comprises facing disks to untwist and retwist mechanically two yarns positioned between the two disks, a cutter to eliminate excessive tail ends of yarn protruding from the two disks, a crank to set the two disks in rotation, a cam to actuate the cutter that eliminates the excessive tail ends, a lever, cam and spring to provide variable, elastic thrust, momentarily between the two disks, and an actuator which cooperates at least partly with one single programmed actuator.

Abstract: A procedure for splicing textile yarns mechanically whereby two yarns which are initially placed crosswise, awry or parallel to each other are first untwisted and then retwisted together by two rings, the rings being placed face to face and opposite to each other and act on yarns positioned between the rings, and whereby the excessive tail ends are eliminated and the yarns are untwisted up to a desired value in positions of mutual non-interference and are then brought together until they are substantially pressed against each other and are clamped at a position lying at about the beginning of the desired taper of each remaining tail end in cooperation with the rings so as to determine the length of the remaining tail ends and to effect a plucking/tearing action on the tails to be discharged, thereby obtaining progressive remaining tail ends before the retwisting action, and whereby the remaining tail ends are doubled and retwisted at least by the rings, which control the tail ends in at least two points locat

Abstract: Apparatus for splicing fibrous yarns includes structure having walls which define a chamber accessible to receive respective portions of the yarns and confine them adjacent one another. A gas stream may be directed into the chamber transversely to the yarn portions. Means is provided to maintain the gas stream entering the chamber, and preferably also the walls of the chamber, at an elevated temperature sufficient to produce an enhanced intermingling of fibres of the yarn portions which is effective to splice the yarns together. Also disclosed is the corresponding method of splicing fibrous yarns.

Abstract: A device for jointing, by means of compressed air, textile yarns and for preliminarily preparing the ends of the yarns to be jointed is provided, in particular for being installed on textile machinery, such as spoolers.In order to achieve minimum overall dimensions of the device, and to the purpose of constructing it in a simple and cheap way, the device comprises a central body (10, 11, 12) bearing a head (26) in which a mixing chamber (27) is provided, two walls (15, 16) positioned opposed to each other and spaced apart from the two outside surfaces of the body perpendicular to the axis of the chamber (27), and two contoured plates (21, 22), with profiled slots (78, 79) slidingly assembled between the outside surfaces of the central body, and the relevant spaced apart wall. The plates (21, 22) are driven to perform linear movements and drive, by means of their slots, the synchronous movements of the moving gears of the device (FIG. 2).

Abstract: A method for feeding a dosed mixture of splicing air and liquid into a splicing chamber of a compressed-air splicing device, including a valve movable from a receiving to an operating position upon receiving a splicing signal, the valve having a dosing chamber determining the quanity of splicing liquid by the volume thereof, and a mixing chamber, and an element containing a liquid supply, includes connecting the dosing chamber to the element containing the liquid supply prior to splicing for injecting a dosed quantity of liquid into the splicing chamber, disconnecting the dosing chamber from the element containing the liquid supply by moving the valve from the receiving to the operating position with the splicing signal, connecting the dosing chamber to the mixing chamber, and simultaneously opening the mixing chamber for the passage of splicing air to the splicing chamber, and an apparatus for carrying out the method.

Abstract: The compressed-air tubing (5) leading to the splicing chamber (1) of the yarn splicing device is provided with a combined dosing and atomizing valve (7) through which the splicing air passes and which can be actuated by the splicing air injected. The dosing and atomizing valve (7) has a dosing chamber (22) which is connected alternately to a container of liquid and to the splicing air passing through the valve (7). The splicing air injected encloses the valve-cone (19) like a ring, thereby dragging along and atomizing the pre-dosed liquid.

Abstract: Splicing head operated by a compressed gas for use in an automatic splicing device for producing by splicing a thread connection without knots, having a splicing head with at least two openings to admit the compressed gas, which accepts the two threads which are to be joined together, and has the capability to effect the mutual tangling, interwining, mixing and/or winding around of the fibers of the thread and which is provided at both ends of the splicing channel with thread- and air guides which cover the ends of the splicing channel asymmetrically so that only a part of the termination of the splicing channel remains free and which includes thread- and air guides connected with a removable cover which covers the splicing channel.

Abstract: The invention relates to an apparatus for splicing textile threads by means of compressed air in a mixing chamber, with a device for pretreating the ends of the threads which comprises nozzles controllably feedable with compressed air and arranged at the sides of the body in which the mixing chamber is defined. The jets of air caused to leave the nozzles interfere with the cut ends of the threads laterally leaving the mixing chamber and cause them to be subjected to flapping and to a free whipping for opening and separating the fibres and putting the latter parallel to each other. A whirling motion may be imparted to the jets of air to remove the original twist from the fibres.

Abstract: The splicer head (5) of a pneumatic yarn splicer device (1) is provided on either side with pneumatic holding devices (15, 16) for holding the respective yarn ends (34', 35') of the yarns to be spliced together (34, 35), the inlet-mouths (33) of these holding devices having inserting aids for the yarn ends (34', 35') shaped as recesses (36, 37) of varying depth and of limited extent. With the help of said inserting aids, the yarn ends can be seized more rapidly, held more securely, and, as required, be prepared for splicing better and more rapidly.

Abstract: A yarn splicing device for spun yarns, wherein extremities of ends of the yarns which are inserted in overlapping and oppositely directed relationship in a yarn splicing hole are acted upon by flows of a fluid turning to be spliced with each other. The yarn splicing hole is substantially divided in an axial direction thereof into two yarn splicing holes which have center axes displaced from each other.

Abstract: A make-ready unit for making a thread end ready preparatory to connecting it with another thread end in a thread splicing device, the make-ready unit having a thread splicing device, the make-ready unit having a thread channel formed in a hollow body and traversible by a gas flow produced by injected gas, the thread channel being open at both ends for receiving the thread end transitorily therein, including a pressure-gas guiding device formed as a first ring channel surrounding the hollow body and having at least one pressure-gas supply location, the thread channel being formed with a thread inlet end through which the thread end is received and having a funnel-shaped flaring portion at the thread inlet end extending from a main cylindrical part of the thread channel, and a likewise funnel-shaped cover formed with a central opening and covering the funnel-shaped flaring portion of the thread channel in such manner that a second ring channel defined by conical surfaces extends from the first ring channel to t

Abstract: A process and apparatus for piecing a yarn at a spinning unit of an open-end friction spinning machine is disclosed wherein a yarn end, without exposing the wedge-shaped gap, is returned by means of an intake suction means, the suction effect of the suction device affecting the wedge-shaped gap being switched off. Preferably, the rollers forming the wedge-shaped gap are also stopped during the return of the yarn end section for piecing operations.

Abstract: A yarn piecing arrangement is disclosed for an open end friction spinning machine of the type having two friction rollers rotatably drivable in the same direction and disposed adjacent one another to form a yarn forming wedge-shaped gap therebetween, fiber supplying means for supplying individual fibers to the wedge-shaped gap, yarn withdrawal means for withdrawing spun yarn in the direction of the wedge-shaped gap, and suction device means for applying suction forces to hold the spinning yarn in the wedge-shaped gap. In order to facilitate fine control of the yarn piecing process, the friction rollers are stopped before the spun yarn end section is returned to the wedge-shaped gap. Once the yarn end section is positioned at the wedge-shaped gap, the rollers are restarted and yarn piecing is carried out.

Abstract: A method and apparatus is disclosed for restarting a yarn spinning apparatus, such as a wrap yarn spinning machine, and which involves the removal of an initial low quality interconnection in the form of a pieced-up segment, and its subsequent replacement with a high quality interconnection, without interrupting the yarn advance. For this purpose, the apparatus includes a first yarn accumulator for receiving the portion of the yarn which includes the pieced-up segment, and this portion is severed and removed. A second auxiliary yarn accumulator is also provided which is attached to a yarn splicing device, and which is operative to accumulate the advancing finished yarn during the brief time the splicing operation occurs. The brief accumulation time of the finished yarn in the auxiliary accumulator avoids the troublesome step of removing a large quantity of finished yarn from an accumulator.

Abstract: A spun yarn splicing device comprises a yarn splicing member having a yarn splicing hole, a fluid ejection nozzle for ejecting compressed fluid into the yarn splicing hole, and a slit opening into the yarn splicing hole for guiding yarn ends to be spliced into the yarn splicing hole, the yarn splicing hole being cylindrical in a cross section, the slit being directed tangentially to the yarn splicing hole and connected thereto at a junction, the fluid ejection nozzle opening toward a central axis of the yarn splicing hole adjacent to the junction and having a cross-sectional shape elongated in an axial direction of the yarn splicing hole. The yarn ends in the yarn splicing hole can be spliced together by the compressed fluid introduced from the fluid ejection nozzle into the yarn splicing hole.

Abstract: A method for yarn piecing in a fasciated yarn spinning unit, in which an air nozzle for twisting a fiber bundle to form a fasciated yarn is displaced from the normal spinning position to the threading position where the air nozzle can escape from the front roller pair, whereby a free space is prepared for applying a suction means having a sufficient suction force to reversely thread a yarn to be pieced through the air nozzle.

Abstract: A yarn splicing device for spun yarns to each other wherein end sections of two yarns are untwisted and placed in overlapping relationship one on the other and thus overlapping portions of the yarns are acted by fluid to intended splicing of the yarns. An untwisting nozzle of the yarn splicing device comprises a fluid injecting hole formed to open to an inner circumferential face of a nozzle pipe and an intercepting plate disposed on a portion of the inner circumferential face of the nozzle.

Abstract: An apparatus for peeling and twisting an electric wire having an insulating coating comprises a machine frame, a shaft rotatably mounted on said frame and being adapted to be driven by a motor, a machine body movably mounted on the shaft and an elastic member for urging the machine body to an end position on the shaft. The shaft includes wire clamping cam, insulating coating cutting cam, twisting cam and cut insulating coating disengaging cam. A wire clamping means is mounted on the frame and is following the clamping cam. The machine body includes an insulating coating cutting means which follows the insulating coating cutting cam for cutting the insulating coating of the wire, a conductor twisting means which follows the twisting cam for twisting the conductors of the wire and a cut insulating coating disengaging means which follows the disengaging cam for disengaging the insulating coating which has been cut.

Abstract: This invention concerns an improved splicer (10) to splice textile yarns mechanically, the splice being obtained by coupling two single untwisted yarns (70-71) and reapplying the twists thereafter, part of such single yarns (70-71) being untwisted until twists of a sign opposite to the original twists have been imparted, such part then being doubled and remaining tails (270-271) being obtained, the doubled tract being then retwisted by imparting a required value of twist.

Abstract: A method for yarn piecing in a fasciated yarn spinning unit, in which a yarn portion to be pieced is always nipped by a piecing roller means during the piecing operation, whereby feeding length and speed of the yarn in the piecing operation can be accurately controlled by the piecing roller means. Thus, a complicated restarting operation can be carried out in accordance with a predetermined time schedule.

Abstract: A method of starting the operation of a friction spinning unit having friction surfaces displaceable in opposite directions and forming a spinning wedge, the spinning unit further having a fiber infeeding device, a thread take-up device for drawing a thread longitudinally through the spinning wedge, and at least one suction device acting upon the spinning wedge, at least one of the friction surfaces being formed by a sieve drum, the suction device having a suction nozzle acting upon the spinning wedge by sucking air through the wall of the sieve drum includes:(a) stopping the fiber infeed, and stopping the displacement of the friction surfaces;(b) stopping the flow of suction air from the spinning wedge through the wall of the sieve drum into the suction nozzle;(c) introducing into the spinning wedge through the wall of the sieve drum a suction air flow in a direction opposing the direction in which the thread is being drawn, and guiding the air flow out of the suction nozzle through the wall of the sieve dru

Abstract: This invention concerns improvements to procedures to splice yarns (20-21), whether textile yarns or otherwise, the splice being obtained by coupling two single untwisted yarns (20-21) and by reconstituting the twists thereafter, by which improvements a part of the single yarns (20-21) is untwisted until twists of a sign opposite to the sign of the original twists have been imparted, such part then being coupled and reduced tails (220-221) of yarns being obtained, the coupled tract then being retwisted until a required twist has been imparted, the improvements envisaging that the reduced tails (220-221) are obtained after the fibers to be plucked and/or torn (42) have been made substantially parallel and after a substantially axial plucking and/or tearing action has been applied to such fibers (42), and that the taper (320-321) of the remaining reduced tails (220-221) reaches the neighborhood of the periphery of retwister rings (28), the resulting remaining tails (220-221) being controlled and positioned besi

Abstract: A pneumatic yarn splicing method and apparatus for spun yarns. Extremities of ends of the yarn which are inserted in overlapping and oppositely directed relationship in a yarn splicing hole are in free conditions and at least two different points of the yarn ends within the splicing hole are individually acted upon by flows of a fluid turning in opposite directions.

Abstract: A structure of a joint of spun yarns formed by lapping the tops of two yarn ends in the untwisted state and jetting a compressed fluid to the lapped portion while keeping the tops of the yarn ends free without securing the tops of the yarn ends. In at least one portion of the joint, fibers of the two yarn ends are integrated to form one yarn having twists of the same or opposite twisting direction as or to the twisting direction of inherent twists of the spun yarn.

Abstract: In a splice between ends of multi-ply yarn, each ply end (G1a, G1b) of an end of the multi-ply yarn (Z1) is disposed adjacent to an associated ply end (G2b, G2a) of the end of the other multi-ply yarn (Z2) so as to overlap it over a predetermined length (U1, U2), and each of these two ply ends (G1a, G2b, or G2a, G1b) has the respective other ply end (G1b or G2b) of the multi-ply yarn wrapped around it in the region of overlap (U1, U2), different regions of overlap (U1, U2) of a splice being disposed in the longitudinal direction of the multi-ply yarn without overlaps.

Abstract: Prior to the actual splicing process, a preparation process is carried out in a preparation apparatus. The apparatus comprises a preparation tube having one or more circumferentially arranged air jet nozzles. The axis of each nozzle is inclined to the axis of the preparation tube and has a mouthpiece at the inlet end. The yarn end to be prepared is introduced into the preparation tube, where it is separated by the air jet emanating from the mouth piece and is spread apart.

Abstract: A pneumatic yarn splicing apparatus comprising a yarn end untwisting means and a fluid jetting means for splicing lapped yarn ends by intertwining the yarn ends by the swirling air stream. X-figured guide groove comprising yarn end introducing grooves and yarn end untwisting grooves is formed on the nozzle block and a fluid jet nozzle for splicing the yarn ends is disposed at the intersecting portion of the guide groove.

Abstract: A method for metering and injecting small amounts of fluid into the splicing air of a splicing head of a compressed gas thread splicing device including a metering valve having a piston with a metering chamber formed therein, the metering chamber having a given volume determining the amount of fluid to be injected, the piston being slideable between a loading position and an injecting position of the metering chamber, a circulating fluid circuit connected to the piston, and a compressed gas circuit connected from the piston to the splicing head, which includes connecting the metering chamber to the circulating fluid circuit in the loading position before splicing, moving the piston from the loading position to the injecting position, and subsequently bringing the metering chamber in contact with a compressed gas current in the compressed gas circuit flowing into the splicing head as splicing air at the moment the fluid is to be injected for splicing, and a device for carrying out the method.

Abstract: A spun yarn splicing method wherein ends of both yarns untwisted and positioned in overlapping relationship within a yarn splicing hole are acted upon by a compressed fluid to effect an intended splicing of yarns. Prior to the untwisting operation of the yarn ends, the yarn ends are held and cut, and grasping of the yarn ends are released after the yarns are relaxed and the tension of the yarn is decreased.

Abstract: A yarn splicing apparatus for spun yarns including a yarn splicing member. First and second fluid injection nozzles for producing two whirling flows in the direction opposite to each other are provided at two circumferential positions of a yarn splicing hole which is formed in the yarn splicing member, and a third fluid injection nozzle for producing a non-whirling flow is also provided between the first and second nozzles.

Abstract: In the piecing operation, the broken ends of a yarn and a fiber bundle are sucked into a suction nozzle, and therein are entangled due to twists imparted to the fiber bundle by first vortices utilized for forming a fasciated yarn. The broken end of the yarn may be twisted in reverse of the fiber bundle by second vortices. Further, third vortices weaker than the first vortices may be used instead of the first vortices. The apparatus comprises jets for generating the second and third vortices and piping for transporting air to the jets and from the suction nozzle, as well as a control circuit thereof.

Abstract: Method for the knot-free connection of two threads formed of textile fibers of limited length having at least one twisted fiber strand, including a splicing device for mutually tangling, intermixing and intertwining individual fibers of the two threads, which includes inserting the two threads coming from opposite sides into the splicing device, trimming the end of each thread to a predetermined distance from the splicing device, vibrating, loosening, combing and separating the thread ends into individual fibers, cleaning and spreading apart each thread end by blowing compressed air into the splicing device obliquely to the longitudinal direction of the individual fibers and by beating, pulling and tearing with mechanical and pneumatic stresses in direction toward the thread ends, withdrawing the prepared thread ends from opposite sides up to the splicing device, tangling, mixing and hooking the individual fibers of the two thread ends to each other to form a splice connecting the threads after setting the sp

Abstract: Method of and apparatus for splicing fibrous formations, particularly yarns. Mutually closely arranged parallel and overlapping ends of the fibrous formations to be spliced are disposed inside the pressure channel of a splicing chamber. The thus disposed fibrous formations are subjected to the whirling action of pressure air and at least at one of the mouth of said pressure channel they are subjected to the action of an air flow from the pressure channel, such air flow vibrating at a high frequency. Such vibration of the air flow is achieved by directing the air flow column from the pressure channel toward an obstacle confronting and near the mouth of the pressure channel. Such obstacle may be made adjustable, whereby to adjust the frequency of vibration of the air flow column.

Abstract: Method of and apparatus for preparing and splicing the ends of fibrous formations, particularly in the pressure channel of a pneumatic splicing chamber provided with a displaceable lid. Excess lengths of ends of fibrous formations to be spliced are placed within the pressure channel in overlapping substantially parallel relationship and are then cut to a desired length by cutting means such as scissors. Following such cutting operation, the fibrous formations within the pressure channel are bent without gripping over the edges of the mouth of the pressure channel, whereby to hold the sections of the fibrous formations within the channel in generally parallel relationship.

Abstract: A system for preparing and splicing two yarn ends has preparation nozzles in a turbulence chamber adjacent the end faces of a casing. The preparation nozzles improve the quality of the splicing by thinning the yarn ends. Compressed air or a partial vacuum can operate the preparation nozzles. With preparation of the yarn ends in the turbulence chamber for the splicing, the expenditure for a preparation mechanism remote from the splicing casing is eliminated.

Abstract: Splicer device to disassemble and recompose yarn mechanically whereby said device comprises belts to untwist-retwist the yarns to be spliced, the yarns undergoing an untwisting action in a position of mutual non-interference and an action of removal and discharge of excessive tail ends and also a retwisting action, a hook to displace sideways at least one of the yarns, an intermediate clamp, a securing and tearing cutter, retwisting belts, and a suction discharge for the tail ends.

Abstract: A yarn end untwisting device for a pneumatic yarn splicing apparatus for spun yarns. Both yarn ends are guided into individual nozzle hole of the untwisting device and applied a pressurized fluid against each yarn end within the nozzle hole to open and loosen the component fibers of the yarn end. In the present device, the quantity of the pressurized fluid and the direction of jetting fluid can be changed and adjusted easily.