Abstract: A method for preventing the irregular untwisting of yarn ends in pneumatic yarn splicing apparatus. The respective free yarn ends to be spliced are untwisted and loosened in the control nozzles and each untwisted yarn ends is cut at a predetermined position thereof. The cut yarn ends are overlapped in a splicing hole and spliced by the jetted fluid stream.

Abstract: Make-ready device for making a first thread end ready for connection to a second thread end in a thread joining device, the make-ready device having a hollow body open at opposite ends thereof for receiving the first thread therein and traversible by a gas flow, includes at least one compressed gas guiding device for guiding the gas flow so as to at least partly stretch, parallelize and clean the fibers of the first thread in the hollow body, the compressed gas guiding device serving to control at least one of the nature and the direction of the compressed gas flow to the first thread end inside the hollow body, the compressed gas guiding device having a branch line connected to a compressed gas supply line and being continuously adjustably tappable with respect to at least the one of the nature and the direction of the compressed gas flow.

Abstract: According to the method of the invention, the broken end of yarn and the end of the fibrous strand are caused to move simultaneously opposite to one another and, after the ends of yarn and the fibrous strand are brought close together, they are caused to deviate from the path of their initial movement and to run at a distance from one another in such a manner that during the untwisting of the end of yarn it engages the end of the fibrous strand to form a knot. In an apparatus for carrying out the method for piecing the end of yarn to the end of the fibrous strand, there is provided a device for gripping and transferring the end of yarn to the pulling device, which is formed by a pipe having an outlet pipe connected to a source of reduced air pressure.

Abstract: A pneumatic yarn splicing apparatus having a splicing member arranged in the central portion thereof. The splicing member comprises a yarn splicing hole of a cylindrical shape extending through the body of the splicing member, a slit extending along the splicing hole and two nozzles opened to the splicing hole in confronting relation. The two nozzles are so constructed that there is a time lag between the initiation of jetting at a first nozzle and the initiation of jetting at a second nozzle.

Abstract: Device for the partial straightening and parallelizing of fibers of a thread or thread end, including a turbine being drivable by compressed gas, the turbine including a rotor being accessible from outside the turbine, the rotor having a central opening formed therein being coaxial with the axis of rotation of the rotor for receiving a thread or thread end.

Abstract: An arrangement for winding yarn (3) from a supply roll (2) by means of a flyer (4) onto a bunch of wires fed through the center hole of the supply roll for automatically transferring to the unwinding of a new supply roll (2') when the yarn on the first supply roll (2) is used up or broken. The new supply roll (2') is disposed downstream of the first supply roll (2) seen in the direction of feed of the bunch of wires and a second flyer (4') is associated with it. Downstream of the new supply roll (2') and the second flyer (4') there is a holding device (13) to loosely hold the free end of the yarn (3') on the new supply roll (2') as long as the yarn (3) on the old supply roll (2) is not used up or broken. At its free end the yarn (3') on the new supply roll (2') is formed into a sliding knot (15) carried by the holding device (13), through which sliding knot the bunch of wires (1) is freely fed.

Abstract: A compressed gas splicing head assembly in an automatic splicing device for producing a knot-free thread connection by splicing, includes a compressed gas splicing head having a splicing channel with two ends formed therein defining a plane of symmetry in longitudinal direction of the splicing channel, the splicing head having outlets for the splicing channel formed therein, and the splicing head having at least two compressed gas injection openings formed therein discharging in said splicing channel mutually opposite and offset to the left and right of the plane of symmetry for holding and mutually tangling, bunching, swirling and winding fibers of two threads to be interconnected, said injection openings including an injection opening disposed closest to a given portion of each respective outlet, and thread and air guides each disposed at a respective one of the ends of the splicing channel, each of the guides obstructing a respective one of the given portions of the outlets, and the threads being disposed

Abstract: Respective leading and trailing end portions of two multi-filament yarns are joined together by disposing the leading and trailing end portions of the two multi-filament yarns in longitudinally contacting conditions, clamping the end portions of the multi-filament yarns at two points which are located at a predetermined distance from each other, drawing and slackening the end portions of the yarns between the two points, and blowing air under pressure toward the end portions of the yarns so that a jet stream of air impinges at a predetermined angle upon the end portions of the yarns over a predetermined length of the end portions between the two points for causing the end portions of the yarns to disintegrate into filaments over the aforesaid predetermined length and causing the filaments to entwine on one another.

Abstract: Thread splicing device, including a stationary base body having a first compressed-air canal formed therein, a splicing head being interchangeably connected to the base body, the splicing head having a second compressed-air canal formed therein being in communication with the first compressed-air canal formed in the base body, the splicing head having a plurality of air discharge nozzles formed therein being in communication with the second compressed-air canal formed in the splicing head, and the splicing head having a splicing chamber formed therein being in communication with the air discharge nozzles formed in the splicing head, the splicing chamber including a selectively coverable longitudinal slot for inserting and joining threads.

Abstract: A pneumatic yarn splicing apparatus for splicing spun yarns including two nozzle pipes for untwisting and attracting yarn ends to be spliced and a yarn splicing member having a yarn splicing hole which is disposed between the nozzle pipes. The nozzle pipes have opening areas reduced with respect to the diameter of the nozzle pipe to increase the speed of flow of the suction stream of air.

Abstract: Method of producing a knot-free thread connection by splicing, which includes mixing, alternately interlocking and anchoring individual fibers of the threads to be joined to each other in a first pre-splicing operation, and subsequently further and finally intertwining and anchoring the threads to each other in a separate finish-splicing operation, and an apparatus for carrying out the method.

Abstract: Device for tying a first thread to a second thread by splicing with pressure gas, the device having a splicing chamber formed with an elongated slot for inserting and tying the threads, at least one pressure-gas channel terminating in an interior space of the splicing chamber, a thread regulator movable from a thread take-up position to a thread delivery position for laying the thread into the elongated slot of the splicing chamber, and controllable parts including thread severing devices for separating ends of the threads, a controllable and adjustable pressure-gas dosing device connected to the pressure-gas channel, a device disposed above the splicing chamber for taking up the thread end of the second thread, a device disposed below the splicing chamber for taking up the thread end of the first thread, a controllable thread gripper for the first thread, and a controllable thread gripper for the second thread, including an opening device in the thread gripper of the second thread, and the pressure-gas chann

Abstract: An improved splicing method in which both the yarn ends to be spliced are once untwisted and then lapped and then the lapped portion of the yarn ends is subjected to the action of a compressed fluid. The length of the lapped portion arranged in a splicing hole having a jet nozzle can be changed appropriately according to kinds or count number of yarns to be processed.

Abstract: A portable hand-held traversable yarn end splicer adapted to be carried and operated by one hand of an operator while freeing the other hand to serve the splicer preparatory to, during, or after a splicing operation as conditions may require.The invention is characterized by the splicer of the class described provided with: a traverse mechanism responsive to the grip of the holding hand of the operator for axially reciprocating a tensioned segment of a pair of oppositely extending overlapped yarn ends, a wrap wheel responsive to said grip for consecutively winding one or more helical courses of wrap thread around said segment, a stationary cutter responsive to said grip for severing the tail of the yarn end near the beginning of the first course, and a second stationary cutter responsive to said grip for severing the tail of the other yarn end near the end of the first course.

Abstract: Thread splicing device, including a stationary base body having a compressed air conduction channel formed therein, a splicing head being exchangeably connected to the base body and having a splicing chamber for inserting and joining threads being formed therein, the splicing head having a compressed air conduction channel being formed therein in communication with the compressed air conduction channel in the base body and terminating in the splicing chamber, and the splicing head having at least one air outlet slit being formed therein at an inclination relative to the longitudinal axis of the splicing chamber and being in connection with the compressed air conduction channel formed therein at the splicing chamber, and a cover for temporarily covering the splicing chamber.

Abstract: A pneumatic splicing apparatus for spun yarns comprising a splicing member having a splicing hole and a jet nozzle for jetting a compressed fluid into the splicing hole, control nozzles arranged on both the outer sides of the splicing hole to suck and to untwist the yarn ends, cutting devices for cutting the yarn ends, and yarn guiding means for inserting the yarn ends into the splicing hole. The control nozzles provides with a cylindrical sleeve slidably fitted in the nozzle hole thereof to change the position of a jet hole of the control nozzle relative to the yarn ends to be untwisted.

Abstract: Thread joining device, including a stationary basic body having a channel for compressed air formed therein, a splicing head having formed therein a splicing chamber for inserting and joining threads and a compressed air channel for communication between the splicing chamber and the channel formed in the basic body, and means for easily exchangeably fastening the splicing head to the basic body.

Abstract: In an apparatus for joining textile threads with the aid of compressed air, there is provided a device for checking the tearing strength of the joint zone of the threads before their extraction from the apparatus. The device comprises at least one mobile member arranged to act on the loop formed by the joined threads with a predetermined traction force at an intermediate point between the points at which the threads are locked at the apparatus inlet. Control means are provided which are operated so that they travel through a predetermined outward and return stroke and act on said mobile member by way of a yieldable coupling which is set to yield when the predetermined traction force is exceeded.

Abstract: An apparatus for joining textile threads with the aid of compressed air, for mounting in an automatic winding machine, comprises, in front of and behind a mixing chamber, opposing walls with guides for positioning the threads laterally to the chamber and perpendicularly to its longitudinal axis. The front wall carries members for crossing-over the threads before their insertion into the chamber. In the vicinity of the positioning guides for the thread locking members, the opposing wall, at which the threads to be joined enter the apparatus, carries adjustable members for adjusting the length of the free ends of the threads after they have been cut, and an adjustable member for operating a valve which controls the entry of compressed air into the chamber. A control drum which can be coupled to a power take-off of the winding machine is provided with profiled cam grooves for controlling the movements of the mobile members of the apparatus.

Abstract: A pneumatic yarn splicing apparatus 12 for spun yarns comprises a yarn quiding means 24, 25, yarn-cutting devices 22, 23, yarn end control nozzles 20, 21 and a yarn-splicing member 19. The yarn-splicing member 19 includes a flat jet nozzle 35 opened on a yarn-splicing hole 33 perforated through the yarn-splicing member 19.

Abstract: A method for preventing abnormal splicing. When two or more yarns are sucked from the package by the suction arm or when a slab or other disorder is detected by the detecting device, the yarn is cut in response to a yarn cutting signal from the detecting device, and after completion of the splicing operation, the yarn is forcibly cut again and the splicing operation is conducted again.

Abstract: A splicing head has a turbulence chamber which is circular in cross section. The turbulence chamber is cylindrical or has a cylindrical center portion and conical outwardly enlarging end portion, and an insertion slot. Air inlet passages open into the cylindrical portion along tangents and in opposite directions so that air under pressure through the passages creates circumferential flow in opposite directions. Air is supplied alternately to the two passages, creating oppositely alternating air currents in the chamber, thereby twisting and joining thread ends inserted through the slot into the chamber without having overtwisted or untwisted portions.

Abstract: Reinforcement fiber for fiber-reinforced resin composites such as graphite tows are spliced by applying a solution of a linear, soluble, high glass transition temperature polyimide having good thermal-oxidative stability to the broken ends of a fiber, placing the ends in contact and removing solvent. The preferred polyimide is an aromatic-cycloaliphatic diamine such as 5,(6)-amino-1-(4' amino phenyl)-1,3-trimethylindane (DAPI) imidized with a dianhydride such as PMDA or BTDA. The soluble polyimide can be preapplied to the fiber as a sizing. The splices are not apparent by visual inspection nor by instrumental scanning of cured composites indicating there is no blistering nor loss of strength.

Abstract: Thread splicing device, including a stationary base body having a first compressed-air canal formed therein, a splicing head being interchangeably connected to the base body, the splicing head having a second compressed-air canal formed therein being in communication with the first compressed-air canal formed in the base body and the splicing head having a splicing chamber formed therein being in communication with the second compressed-air canal formed in the splicing head, the splicing chamber including a selectively coverable longitudinal slot having a slot bottom and being operable for inserting and joining threads, the slot having a substantially circular cross section, at least in the vicinity of the bottom thereof, forming a partly full circle leaving an open aperture for inserting and removing the threads.

Abstract: A pneumatic yarn splicing device comprises a bracket, a yarn splicing member mounted on the bracket and having a pair of side faces and a yarn splicing hole extending transversely between the side faces, the yarn splicing member including an air ejection nozzle for ejecting a compressed air flow into the yarn splicing hole, and a pair of yarn presser levers pivotably mounted with respect to the bracket and each having on a distal end thereof a step defined by a first portion close to one of the side faces and a second portion spaced therefrom, the yarn splicing hole being partly closable by the first portion when the yarn presser levers are angularly moved to bring the step into confronting relation to the yarn splicing hole.

Abstract: Thread splicing device, including a stationary base body having a first compressed-air canal formed therein, a splicing head being interchangeably connected to the base body, the splicing head having a second compressed-air canal formed therein being in communication with the first compressed-air canal formed in the base body and the splicing head having a splicing chamber formed therein being in communication with the second compressed-air canal formed in the splicing head, the splicing chamber including a selectively coverable longitudinal slot for inserting and joining threads, the slot having a flat slot bottom and a substantially prismoidal cross section being modified in accordance with specifications of the threads to be spliced.

Abstract: Splicing device for producing a knot-free thread connection by splicing, including a splicing head having a longitudinal groove formed therein for the insertion of threads to be joined together, the splicing head having a plurality of cross grooves formed in the longitudinal groove and the splicing head having compressed air supply holes formed therein, at least two of the cross grooves having at least one compressed air supply hole terminating therein.

Abstract: A splicing apparatus for spun yarns includes a splicing member having a cylindrical splicing hole formed to pierce through the splicing member, a V-groove, a slit extended from the lower end of the V-groove to the upper portion of the splicing hole and a jet nozzle opened in the splicing hole. Control plates for covering the opening of the splicing hole partially is arranged to be adjustable on both the sides of the splicing member to control the quantity of the fluid flowed out from the opening of the splicing hole.

Abstract: A splicing apparatus for spun yarns includes a splicing member having a splicing hole and a jet nozzle jetting a compressed fluid. Yarn end control nozzles, yarn cutting devices, a yarn gathering lever and yarn clamping devices are arranged in sequence on both sides of the splicing member. The yarn gathering lever for taking out the yarn ends left in the untwisting nozzle is regulated with the quantity of turning by a stopping means.

Abstract: A device and method are shown for splicing a rope of the type made up of multiple strands. A frame is adapted to receive a length of rope to be spliced. A flexible cable extending between sides of the frame secures the rope within the frame. A fluid actuated piston-cylinder and cable-pulley arrangement cooperate to provide an upwardly biasing force to bias a selected strand of the rope outwardly from the remaining rope strands secured within the frame. The user of the device can then pass a strand free end through the opening to effect a splice.

Abstract: A splicing apparatus for spun yarns comprises a splicing member which has a cylindrical splicing hole, a slit for insertion of the yarns and a jet nozzle jetting a compressed fluid and opened to the splicing hole in the tangential directions, and yarn end control nozzles, yarn cutting devices, a yarn guiding means and yarn clamping devices, which are arranged in sequence on both sides of the splicing member. Control plates for covering the opening of the splicing hole partially is arranged on both the sides of the splicing member to control the quantity of the fluid flowed out from the opening of the splicing hole.

Abstract: Pneumatic yarn splicing method and apparatus for spun yarns. Suction nozzles for controlling yarn ends are arranged on both the sides of a splicing nozzle with a nozzle hole for jetting a compressed fluid. The sucking action of the yarn end control nozzle is stopped when or after the treatment of the yarn ends is completed, and then, a compressed fluid is jetted from the splicing nozzle to effect splicing.

Abstract: Method for joining an upper thread with a lower thread, which includes moving at least one thread regulator from a thread receiving position to a thread delivery position, inserting the threads with the at least one thread regulator into a longitudinal groove formed in a splicing chamber, automatically admitting compressed air laterally into the splicing chamber for splicing the threads, automatically separating the ends of the upper and lower threads and blowing compressed air into the splicing chamber in dependence on the position of the at least one thread regulator, separating the threads to form new shorter thread ends, sucking up the newly-formed shorter thread ends with an air stream, and securing the newly-formed shorter thread ends and device for performing the method.

Abstract: A method for the splicing of two twisted staple yarns includes the steps of untwisting portions of each yarn, drafting these portions to form beards and retwisting the beards to form the splice. In one aspect of the invention, the untwisting is effected by rolling the yarns between two surfaces at nip point to rotate the yarns. In a second aspect, each yarn is gripped between nips at two locations (defining the respective yarn portion) which are spaced apart by a distance not significantly greater than the mean yarn fibre length; after untwisting, the beards are formed by drawing the ends of the yarns in opposite directions and longitudinally through the adjacent nips, whereby both ends of each beard are held between the nips defining the respective yarn portion. Also disclosed is apparatus for carrying out the respective aspects of the method.

Abstract: To unravel a terminal portion of a textile yarn, in particular in preparation for joining that yarn to another one by twisting their ends together, an extremity of the yarn is vibrated to loosen the fibers while a part of the yarn spaced from its end is held fast and the yarn extremity is combed or subjected to an aspirated air stream to remove loose fibers. In a preferred arrangement the air stream also causes vibration of a flexible tongue mounted in an air duct alongside the yarn extremity to oscillate its fibers.

Abstract: A method and apparatus for interentangling ends of multi-filament yarn and tow which involves subjecting the overlapped ends to jets of gaseous fluid to interentangle the ends. The method involves employing a plurality of jets, one of which tends to rotate at least one of the filaments, and the other of which tends to move the filaments transversely. The jets act on the filaments when they are in motion from a previous jet. The apparatus provides a chamber for containing the overlapped ends and for defining the jets.

Abstract: Method of joining textile threads, respectively, formed of a plurality of twisted-together filaments by splicing the threads with the aid of compressed air, the threads being inserted into a splicing chamber having a compressed-air channel communicating therewith, the threads being fed from two sides of the splicing chamber and being held by respective thread holding members, which includes, prior to splicing the threads, freeing the threads of the twist formed therein in a region thereof at which the splicing connection is to be formed.

Abstract: Yarn splicing chambers which in one form comprise a block with an open channel therethrough, one wall of the channel being vertical and the other inclined to form an included angle of between 30.degree. to 45.degree. . An inlet is provided centrally of the bottom of the channel for admission thereto of gas under pressure of 5.5 bars to produce vortex flow having a predominant direction of rotation when, in use, the open top of the channel is sealed by a shutter, the gas exhausting out of the open ends of the channel into which yarns are introduced for splicing. An alternative form of chamber comprises a block having an open channel therethrough wherein each wall of the channel comprises a first wall portion substantially vertical with respect to a flat bottom portion of the channel at respective end portions of the channel, and a second wall portion inclined with respect to the said flat bottom portion, and the inlet means is located within the central portion of the channel.

Abstract: Controlled compressed-air splicing device for textile threads with a controlled compressed-air metering valve supplied from a compressed-air supply device, including an automatic quality control device for ensuring the quality of spliced joints formed by the splicing device.

Abstract: A splicer includes a splicing head into which the two yarn ends are introduced through an inserting slot into a turbulence chamber. The turbulence chamber is formed from two juxtaposed frustum-shaped chambers interconnected by a connecting slot. A pressure medium is tangentially introduced through one opening into each chamber for forming the splice and the flow is guided in a lemiscate-like path through the two chambers. As a result of the two oppositely directed pressure medium flows, the two yarn ends are axially centrally fixed, while the two pressure medium flows escape in the direction of the larger chamber ends and thereby subject the yarn ends to a turbulent and twisting actions, so that a joint is formed having no projecting yarn ends and no weak points due to the reduced yarn twist.

Abstract: An apparatus to recover and restring a broken threadline in a processing multiple running threadlines includes a waste suction device to collect the broken threadline, an interlacing jet to splice the broken threadline onto a running threadline, a forwarding jet to maintain tension on the broken end, a coanda surface at the exit end of the forwarding jet to deflect the broken end into the suction device. While the broken end travels over a notched swing pin to the waste suction device the swing pin is moved to contact the running end which is pulling the broken end spliced to it forward. The action of the swing pin and a pin or cutter blade at the exit of the forwarding jet serves to sever the filaments of the tensioned broken-end threadline which results in a double end running to a sucker gun at the windup. The ends are then separated, placed in the proper guides and restrung.

Abstract: A method of and apparatus for binding fiber bundles, as produced in the textile industry. Each of the two fiber bundles is mixed with the other fiber bundle in two regions of the binding and is wound around in a force-locking manner with individual fibers originating from the fiber bundles. The loose ends of the two bundles to be bound are automatically severed during the course of the formation of the binding and the remaining ends are introduced or worked into the binding using a pair of rotatable disc-shaped deformation members which are selectively movable toward one another while rotating to engage the fiber bundles.

Abstract: In a device for splicing textile yarns by admixing and intermingling the component fibers thereof, a mechanical unit is provided which essentially comprises thread-clamping members comprised of fixed component parts formed pairwise on the sidewalls of the machine in an advanced position relative to the fiber-blending chamber and to the cutting members, the latter cutting members being adjustably actuated by actuators operatively connected to the blending-chamber lid.

Abstract: The yarn pieces to be joined are stretched between the two pairs of suction tubes (28, 29; 30, 31) and untwisted by being wound about spindles (20, 21). Hot compressed air fed along the surface of two blocks (32, 33) adjacent to the untwisted yarn portions remove free fibers and distribute the fiber tufts in the base of a channel formed in said blocks (32, 33). Said tufts are retained in the base of the channel by an electrostatic field formed with the aid of conductors (46) and the generator (GE). The blocks are then rotated about the rotation shafts (4, 5) until the channel edges are in contact with each other. Air is fed perpendicularly to the plane containing the fiber tufts in proximity to their respective ends in order to cause the fibers of the two tufts to interpenetrate, the spindles (20, 21) then being driven in the reverse direction in order to twist the fiber tufts and to disengage the yarn.

Abstract: In a device for splicing textile yarns by fibre-intermingling with the aid of compressed air, a pneumatic timing unit is provided for adjusting the duration of the compressed air jet. The unit essentially comprises a timing reservoir composed by a number of spaces interconnected with each other and communicating with the fibre-blending chamber, a cutoff valve controlling the flow of air from the air source to the blending chamber. An auxiliary throttling means permits to adjust with the desired accuracy the flow of compressed air from the timing reservoir to the blending chamber, so that it becomes possible to select the proper time of jet duration according to the yarn types.

Abstract: Method for connecting an upper thread to a lower thread, which includes inserting the threads into a longitudinal groove formed in a chamber for connecting the threads with a thread feeder being movable from a thread receiving position to a thread delivery position, splicing the threads together in the chamber using compressed air acting on the threads from the side, securely holding the threads up to the application of the compressed air when the threads are inserted into the chamber uncrossed, and securely holding the threads which are inserted into the chamber during the splicing in the immediate vicinity of the chamber when the threads are crossed during movement of the thread feeder, and a device for carrying out the method.

Abstract: A binding for bundles of fibers in which fibers originating from at least one of the fiber bundles wind around the rest of the fibers in a manner locked by tension. Fiber bundles which are to be bound are deformed between deformation members and fibers are removed from at least one of the fiber bundles and are wound in a manner locked by tension around the remainder of the remaining pieces of fibers to be bound. Deformation members are positioned very close to each other, each having a profiled surface, and they can be driven in opposite directions with respect to each other. The fiber bundles which are to be bound are deformed in the gap between the deformation members.

Abstract: A method of and apparatus for binding fiber bundles which reduces an abrupt cross-sectional course at each end of the fiber bundle resulting from the loose ends of the bundles having been removed. The loose ends are, during the binding operation, severed in a fraying manner by abrasive edges and the frayed bound ends are worked into the resulting binding.

Abstract: This invention relates to a method and an apparatus for avoiding untwisting during the formation of a binding of two fiber bundles. The rotational direction of deformation members acting on the fiber bundles is selected to be different in different groups of deformation members in order to reproduce or to increase the original twist during the binding operation.

Abstract: Method and apparatus for splicing the ends of spun yarn includes means for inserting the yarn ends into a hole associated with a splicing nozzle having one or more air jet pipes, in which hole the ends are subjected to an air jet to join them each other. Yarn end control nozzles for the yarn on the package side and the yarn on the bobbin side are disposed at each end of the splicing nozzle to suck the yarn ends in the corresponding yarn end control nozzles, respectively and to keep the yarn ends free therein.