Selvage Trimmers Patents (Class 139/302)
-
Patent number: 4587996Abstract: The weft yarn control employs a weft clamping and severing device on each of the picking side and catching side of the weaving rotor. Each device includes a suction tube into which the end of the weft yarn can be drawn, a spring for guiding a weft yarn end between the spring and suction tube and a clamping lever for clamping the yarn when severing is to take place. In addition, each device has a pair of blades for cutting the exposed end of a weft yarn prior to beating-up so that the excess yarn can be drawn off through the suction tubes.Type: GrantFiled: December 28, 1984Date of Patent: May 13, 1986Assignee: Sulzer Brothers LimitedInventor: Alois Steiner
-
Patent number: 4576208Abstract: The weft severing device is used for superposed shed type weaving machines and has at least one shear which has a blowing tube. The tube is supplied with blowing air to convey the weft thread. To sever the weft thread, the blowing tube is moved into the cutting element after the weaving rotor has drawn the weft thread over the mouth of the blowing tube.Type: GrantFiled: November 27, 1984Date of Patent: March 18, 1986Assignee: Sulzer Brothers LimitedInventor: Alois Steiner
-
Patent number: 4572245Abstract: A shield is provided upstream of the heating wire of the electrothermal fabric melt cutter to prevent cooling of the heating wire by a fanning action of the reed during beating-up. The shield extends to the fabric and may have a cover for further supporting the fabric during movement past the heating wire of the cutter.Type: GrantFiled: May 22, 1984Date of Patent: February 25, 1986Assignee: Sulzer Brothers LimitedInventor: Lorant Gachsay
-
Patent number: 4570683Abstract: A yarn end holding device for a loom, the device including a fluid channel along which a fluid flow is directed to draw the yarn end into the channel and clamp means positioned to receive the yarn end and hold it during beat-up.Type: GrantFiled: May 21, 1985Date of Patent: February 18, 1986Assignee: Sulzer Brothers LimitedInventor: John D. Griffith
-
Patent number: 4554952Abstract: A severing device for use on a shuttleless loom comprises scissor sections defining raceways for maintenance of a thrust ball bearings therebetween.Type: GrantFiled: December 30, 1983Date of Patent: November 26, 1985Inventor: Gerald E. Coleman
-
Patent number: 4549582Abstract: The apparatus comprises an injector nozzle, for instance on the loom take-up roll. The injector nozzle has a plurality of air supply passages or channels opening into an extraction conduit surrounding the selvedge to be removed or extracted. The selvedge is pulled through the injector nozzle by the air coming out of the air supply passages and conducted through a tube or hose into a waste container. The injector nozzle for extracting cut-off fabric parts is especially suited for sensitive materials, e.g. glass fiber yarns. When for instance the selvedge contains severed weft thread ends of glass fiber material, the latter are particularly well protected against breakage due to the extracting injector nozzle.Type: GrantFiled: May 21, 1984Date of Patent: October 29, 1985Assignee: Maschinenfabrik Sulzer-Ruti AGInventors: Walter Kung, Stefan Svarc
-
Patent number: 4546802Abstract: In order to prevent a loom from continuing to operate after burnout of hot wire cutters for cutting selvage, circuitry is provided to automatically stop operation of the loom upon hot wire cutter burnout. The circuitry preferably includes a conventional loom-stopping device associated with drop wires (for detecting warp end breakage) already associated with the loom. A coil is disposed in series with the hot wire cutters and operatively associated with a reed switch and an indicator light which are connected in parallel with the drop wires. The coil, reed switch, and indicator light can be readily retrofit to pre-existing loom components, and the indicator light allows the operator to determine whether loom stoppage is a result of hot wire cutter burnout, or warp end breakage.Type: GrantFiled: June 4, 1984Date of Patent: October 15, 1985Assignee: Burlington Industries, Inc.Inventor: Robert H. Best
-
Patent number: 4542771Abstract: An improved anvil construction, for use in an ultrasonic apparatus for edge cutting and sealing moving lengths of at least partially thermoplastic material, particularly textile fabric having at least some thermoplastic fibers, and including a vibrating sonic horn cooperating with and vibrating against the anvil for such ultrasonic edge cutting and sealing as the material moves between the sonic horn and the anvil. The anvil includes a peaked cutting edge and first and second surfaces extending in respective opposite directions from the cutting edge and is characterized by being adjustable to positions for effecting clean and sharp edge cutting and desired amounts of edge sealing in the material while resisting wear on the anvil.Type: GrantFiled: February 3, 1984Date of Patent: September 24, 1985Assignee: Springs Industries, Inc.Inventors: George L. Payet, James E. Hendrix, Jack R. Lowery, Sr.
-
Patent number: 4541460Abstract: When cutting the successive weft lengths after they have been inserted into the weaving shed, the tail ends are retained in a clamping device. Thereby shifting the weft lengths in the winding direction of the cloth is difficult. According to the invention this disadvantage is removed in that the clamping device comprises a stationary clamping element and a movable clamping element cooperating therewith and movable in the direction of the beating up movement of the reed.Type: GrantFiled: August 25, 1982Date of Patent: September 17, 1985Assignee: Ruti-Te Strake B.V.Inventor: Hubert P. van Mullekom
-
Patent number: 4531555Abstract: A yarn cutter for a shuttleless loom, particularly for a water jet loom, comprising a pair of knife bodies each having a cutting edge formed of a ceramic and being driven for relative sliding motion in mutual contact.Type: GrantFiled: January 19, 1983Date of Patent: July 30, 1985Assignee: Toray Industries, Inc.Inventors: Hiroyuki Tatematsu, Haruhiko Kusakabe, Masamitsu Takaki, Gendai Kojima, Sigeru Miyamoto
-
Patent number: 4526211Abstract: A cutter guide wherein a fabric selvage end guide is provided at a fabric selvage end in close proximity to a cutter, and in forming a fringed selvage on a selvage end of a fabric by cutting weft threads after insertion in a shuttleless loom, the position of the guide being adjusted to accommodate a change in the width of a fabric being woven, so as to keep the guide in contact with the fabric selvage end, whereby the distance between the fabric selvage end and the cutter can be minimized.Type: GrantFiled: August 24, 1983Date of Patent: July 2, 1985Assignee: Shikishima Boseki Kabushiki KaishaInventor: Norimitsu Suso
-
Patent number: 4520850Abstract: The auxiliary warp threads required in a shuttleless weaving machine to form a detachable catch selvage are guided through a special auxiliary reed. In the rest position, the auxiliary reed is positioned tightly against the main reed. The auxiliary reed is so guided in its motion that, in addition to the conventional beat-up motion coupled to the main reed, it also performs an additional displacement directed laterally outwards. As a result, a cutting strip is formed between the fabric and the catch selvage. The projecting filling ends held by the auxiliary warp threads are drawn into the catch selvage during this step. The length of filling yarn required for the cutting strip is drawn from the edge waste projecting over the catch selvage and therefore the waste in filling yarn is reduced by the size of the cutting strip width.Type: GrantFiled: October 4, 1983Date of Patent: June 4, 1985Assignee: Lindauer Dornier Gesellschaft mbHInventors: Gottfried Cramer, Valentin Krumm
-
Patent number: 4505304Abstract: A weft cutting device designated generally as (A) is disclosed for cutting a waste tape from the selvage of fabric being woven on a shuttleless loom. The cutting device includes a base (10) which pivotably carries a pivoting mechanism (24) having a cantilevered arm (28) in engagement with a protective cover (30) of a reed (32). As the reed oscillates back and forth during beat-up of the fabric on the loom, the arm is reciprocated. A blade carrier assembly (34) is attached to the pivoting arm mechanism and includes a blade holding means (38) which holds a square cutting element (B). The cutting element is four-sided and includes four cutting edges (62). An identical cutting element (B') provides a complementary cutting surface (55) against which the blade element strikes during cutting. The blade elements (B) and (B') are interchangeable with each other such that eight cutting edges are provided.Type: GrantFiled: March 3, 1983Date of Patent: March 19, 1985Inventor: John E. Zust
-
Patent number: 4498504Abstract: A structure for weaving without outer leno yarns on an air jet loom eliminates the auxiliary selvage from both sides of the fabric being woven. A mechanical filling yarn clamp is disposed between the filling detector and suction source on the right-hand side of the loom for holding the ends of the picks during weaving. A suction source nozzle is mounted adjacent and exterior of a fringe cutter downstream of the temples on the right-hand side for removing pick trimmings cut by the fringe cutter. A combined clamp and cutter is mounted on the left-hand side of the loom adjacent the fabric edge to provide acceptable fringe length without subsequent trimming.Type: GrantFiled: September 23, 1982Date of Patent: February 12, 1985Assignee: Burlington Industries, Inc.Inventors: Danny H. Allen, John H. Sumner
-
Patent number: 4470435Abstract: A selvedge cutting device for a weaving machine or loom serves to cut the selvedge from the fundamental weave or foundation fabric prior to winding-up the same and contains a scissor structure composed of two mutually contacting scissor blades. The one scissor blade is arranged at a mounting structure, such as a stationary ball pin or bowl gudgeon for carrying out swinging or pendulum movements and in relation to which mounting structure the other scissor blade is displaceable in its lengthwise extent. Both of the scissor blades form, at the region of their cutting edges, guide surfaces for the self-guiding of the scissor structure in a cutting lane or alley at the fabric. At the displaceable scissor blade there engages a drive which imparts to such scissor blade an up-and-down movement and does not hinder the pendulum or swinging movements of the scissor structure. In this manner there is provided a simple, functionally reliable selvedge cutting device possessing a high cutting capacity or output.Type: GrantFiled: June 28, 1982Date of Patent: September 11, 1984Assignee: Aktiengesellschaft Adolf SaurerInventors: Anton Lucian, Rudolf Zwiener, Hugo Mueller
-
Patent number: 4453572Abstract: Waste selvage containing warp ends or leno yarns interlaced with filling tails is removed from a shuttleless loom. The loom includes a suction source having an impeller pump with an exhaust, with fabric being removed by a fabric take-up roller. A venturi is disposed below the fabric take-up roller in operative association with waste selvage from fabric being taken up by the roller, the exhaust from the impeller pump being connected to the venturi to provide the motive power for the venturi to suck waste selvage through the venturi and deposit it in a waste selvage container. Draw-off wheels are provided between the venturi and the fabric take-up roller, the venturi preventing the selvage from clinging to the draw-off wheels, and being wound onto the wheels, without any energy penalty. A baffle at the venturi induces rotary turbulence to cause the filling tails and warp ends or leno yarns to twist together so the filling tails will not be blown away by air passing through the venturi.Type: GrantFiled: July 26, 1982Date of Patent: June 12, 1984Assignee: Burlington Industries, Inc.Inventor: Worth M. Key
-
Patent number: 4404997Abstract: A waste binding yarn take-up device for a shuttleless loom, comprises a traction device for pulling waste binding yarns at a constant traction speed, a rotary traverse roller rotatable at a peripheral velocity slightly higher than the traction speed of the traction device, and formed at its outer surface with a guide groove along which the waste binding yarns from the traction device is guided to make traverse motion thereof, and a rotatable core member on which a cheese of the waste binding yarns from the traverse roller is capable of being formed, the core member being biased so that the outer surface of the cheese contacts the outer surface of the traverse roller, thereby wounding up the waste binding yarns on the core member, holding in tension the waste binding yarns without causing the slackening of the waste binding yarns.Type: GrantFiled: April 13, 1981Date of Patent: September 20, 1983Assignee: Nissan Motor Co., Ltd.Inventors: Masayuki Ushiro, Takeki Tsubokura
-
Patent number: 4387744Abstract: A thread severing mechanism is provided that has a long life and is easily and inexpensively replaceable, even when cutting glass yarn. The thread severing device includes a cutting blade having a razor edge, and an anvil with the thread supporting surface defined by a rubber block. The blade is moved with respect rubber block so that the razor edge comes in contact with the block, severing any thread between them. The anvil is desirably mounted on a temple of a shuttleless loom, its position with respect to the cutting blade is adjustable, and it includes an outwardly extending fabric guide that prevents the loom fabric from riding up onto the rubber block.Type: GrantFiled: April 1, 1981Date of Patent: June 14, 1983Assignee: Burlington Industries, Inc.Inventor: Kermit T. Newcomb
-
Patent number: 4296783Abstract: A weft yarn end treating device for a shuttleless loom comprises a conveyer for conveying the end portion of a weft yarn picked into the shed of warp yarns when the end portion is held to contact with the conveyer, a holder for holding the end portion to contact with the conveyer, and a thrusting member for thrusting the end portion into a location at which the end portion begins to be held to contact with the conveyer, so that any binding yarns for catching and drawing the end portion of the picked weft yarn out of the shuttleless loom can be omitted to solve the problems raised in prior art.Type: GrantFiled: November 29, 1978Date of Patent: October 27, 1981Assignee: Nissan Motor Company, Ltd.Inventor: Eiji Ichimatsu
-
Patent number: 4275773Abstract: A weft cutting device in a shuttleless loom is provided with a plate-like cutting member which after completion of beating is caused to move between a pair of weft guide members and across the weft held in position by stepped portions provided for the guide members. Escapement of the weft from the stepped portion is prohibited by an escapement preventing member located near the guide members. Weft is sufficiently tensioned by a tensioning member disposed near the cutting member and engaging weft earlier than the cutting member.Type: GrantFiled: October 10, 1979Date of Patent: June 30, 1981Assignee: Nissan Motor Company, LimitedInventor: Kazuo Shibata
-
Patent number: 4194537Abstract: An arrangement for tensioning the end of an inserted weft for beat-up of the weft into a fell by a rotary reed is described. An elongated weft-gripping mechanism is movable forwardly opposite the direction of movement of the portion of the reed which engages the weft being inserted along an axis oblique to the rotary reed into a frontmost position where it engages a weft carried by each of a succession of weft inserters as soon as the inserter has moved past the end of the reed into which the weft has just been inserted. A pair of jaws on the outer end of the gripping mechanism then close to grip the engaged weft and to move it rearwardly into a securing position between a thrust plate and a toothed, weft-guiding disc coaxial with the rotary reed. After the weft is secured, the jaws of the gripping means open and the gripping mechanism is moved forwardly again to grip the next weft.Type: GrantFiled: October 4, 1976Date of Patent: March 25, 1980Assignee: Vyzkumny ustav bavlnarskyInventors: Miloslav Hodr, Josef Holub, Jiri Stefek
-
Weft thread gripping mechanism for a loom with a travelling-wave shed and a disk-type beat-up motion
Patent number: 4194538Abstract: The proposed weft-thread gripping mechanism includes gripping members elastically tightened together and installed at the side of exit of weft thread carriers from a travelling-wave shed. The gripping members, one of which is movable relative to the other one, are mounted on a shaft of a disk-type beat-up motion so as to be rotatable therewith and displaceable, after gripping the weft thread, lengthwise the shaft axis in the direction from the travelling-wave shed. Located on the shaft of the disk-type beat-up motion is a stationary stop cooperating with the movable gripping member at the moment of the closest approach of the gripping members to the travelling-wave shed for a gap to be formed therebetween a weft thread passes through. This makes it possible to keep taut the weft thread advanced to the fell of the cloth till the end of the process of the cloth formation.Type: GrantFiled: January 8, 1979Date of Patent: March 25, 1980Inventors: Valerian A. Borodin, Lidia M. Sudakova, Nikolai I. Kolobanov -
Patent number: 4185667Abstract: In a shuttleless loom for weaving repeating patterned fabrics including rapier mechanisms for inserting picks of selected ones of a plurality of filling yarns, a filling yarn pattern control mechanism for selectively presenting desired filling yarns at predetermined intervals to the rapier mechanism, cutter mechanisms for cutting the selected filling yarn when received by the rapier mechanism, and selvage trimming mechanisms for trimming the loose filling yarns extending outwardly from the woven fabric; the improvement is provided of mechanisms for positioning and holding the loose cut and uncut ends of filling yarns for trimming by the selvage trimming mechanisms and for continuing to hold under tension the cut ends of those filling yarns for which a repeat pick has not yet been called for in the repeating pattern of the fabric after cutting thereof by the selvage trimming mechanisms and, thereby, eliminating the prior necessity and cost of weaving false selvages which performed such positioning and holdingType: GrantFiled: May 17, 1978Date of Patent: January 29, 1980Assignee: Rossville Mills, Inc.Inventor: Edd H. Kendrick
-
Patent number: 4171008Abstract: Catch yarns are drawn between a pair of rotatable members which are mounted to be movable toward and away from another and yieldably urged to come together. Detecting means detects the relative movement between the pair of rotatable members and produce an alarm-signal when the relative movement of one rotatable member away from another reaches a predetermined increased value.The catch yarns in tensioned state are further utilized to hold the detecting means at a rest position thereof. The detecting means also produces an alarm-signal upon the breakage of the catch yarns.Type: GrantFiled: April 12, 1978Date of Patent: October 16, 1979Assignee: Nissan Motor Company, LimitedInventors: Kimimasa Onishi, Eiji Ichimatsu, Mamoru Nagashima, Junnosuke Suekane, Mikiyoshi Ogawa
-
Patent number: 4143684Abstract: This invention relates to an improvement in the process for beating up and cutting off fillings inserted into the shed in shuttless weaving equipment provided with weft mixers, in particular in weaving machinery with filling insertion by means of grippers advancing into and retracting from the shed, the inserted filling being cut off on the insertion side outside the selvage, the improvement comprising that simultaneously with or following the beating up of the last inserted filling: (a) cutting off the previously inserted filling and seizing the free end, connected to a supply spool, by a holding system, (b) guiding the last inserted filling over the back of a scissor blade facing the shed to a catching hook mounted outside the scissors, (c) simultaneously with the back-motion of the shed, displacing the scissors transversely to the direction of the filling in an orthogonal plane and reopening them, the last inserted filling passing from the back of the scissor blade in front of the other scissor blade intoType: GrantFiled: August 22, 1977Date of Patent: March 13, 1979Assignee: Lindauer Dornier Gesellschaft mbHInventors: Walter Lindenmuller, Erich Peter
-
Patent number: 4142558Abstract: A device for cutting, retaining and tucking a weft end to form a selvedge comprises two concurrently operated cutting blades, a shoe associated with the blades and releasably retaining the cut yarn, a pick up hook adapted to tuck the yarn into the weft shed and cam actuators and linkages to sequentially control the yarn cutting and reinsertion operations.Type: GrantFiled: July 18, 1977Date of Patent: March 6, 1979Inventor: Silvio Sbabo
-
Patent number: 4142559Abstract: A device for providing single and double selvedges comprises a cutting unit, a retaining shoe for each selvedge, a pick up hook for each shoe adapted to bring the cut yarn back through the weft shed and cam actuators and linkages controlling the yarn cutting and picking up operations.Type: GrantFiled: July 18, 1977Date of Patent: March 6, 1979Inventor: Silvio Sbabo
-
Patent number: 4134434Abstract: There is disclosed a device for cutting weft in looms with mechanisms for multi-weft weaving. The cutting device includes a holder on which mutually adjustable shields are mounted. The shields are provided with entrapping dents for the introduction and location of weft between the blades of cutting jaws at a cutting point. The cutting device has a movable jaw which is adjustably connected to a control lever. Adjustable shields and cutting jaws permit the use of the entire length of knife blades secured to the jaws. In this manner, during cutting the overlap is minimized and the lifetimes of the cutting edges and the cutting jaws are increased.Type: GrantFiled: December 19, 1977Date of Patent: January 16, 1979Assignee: Vyzkumny a vyvojovy ustav Zavodu vseobecneho strojirenstviInventors: Jaromir Malasek, Vladimir Kuda, Vojmir Pozar
-
Patent number: 4100945Abstract: A pair of parallel rollers disposed in a path of advance of leno waste exiting from a leno weave portion of a weaving machine are provided with facilities for maintaining their peripheries free of the leno waste as such waste advances through the roller nip. Each of the rollers is made hollow, and is provided with a plurality of peripheral apertures for continually ejecting pressurized air axially introduced into the hollow interior of the cylinder by a fitting in its end wall. Each of the so-apertured cylinders is disposed within a contoured housing which necks down in the leno waste-advancing direction from a relatively wide, convex central portion to relatively narrow inlet and outlet end portions through which the waste enters and exits from the roller nip. As a result, pressurized air emerging from the peripheral apertures of the rollers is directed radially outward through each of the narrow end ports of the housing to entrain the leno waste and to continuously clean the periphery of the cylinders.Type: GrantFiled: June 28, 1976Date of Patent: July 18, 1978Assignee: Elitex Koncern textilniho strojirenstviInventors: Josef Resch, Jan Matuska, Jindrich Trejtnar
-
Patent number: 4077438Abstract: A pair of normally open scissor blades, one fixed the other movable, is mounted on the face of a reed. A pressure applying member closes the blades, via a cam mechanism, at a predetermined position of the reed to sever a weft yarn.Type: GrantFiled: November 23, 1976Date of Patent: March 7, 1978Assignee: Nissan Motor Company, LimitedInventors: Shigenori Tanaka, Akio Tojo, Akio Shindo, Kimimasa Ohnishi
-
Patent number: 4040452Abstract: The invention relates to a device for holding weft yarns in a shuttleless loom with continuous weft feed and more particularly for holding the cut change thread to be folded up into the shed to form a selvedge in a fabric manufactured on said loom.The device comprises a plate, adjustably mounted to the lower cutter of the cutting device of the loom, and a leaf spring pressing against said plate, whereby the weft yarn to be cut is gripped therebetween and kept into a taut state, while the weft yarn is being cut and then gripped by the gripping hook for the folding up into the shed. The device further comprises holding means in the form of a bar cooperating with said gripping elements, by which the weft yarns are held and arranged so that all of them are starting from the same position in the hooking zone, and are prevented from becoming entangled with the other weft yarns still attached to the edge of the fabric.Type: GrantFiled: August 1, 1975Date of Patent: August 9, 1977Assignee: Nuovo Pignone S.p.A.Inventor: Nicola Santucci
-
Patent number: 4031925Abstract: Weft-cutting apparatus for a shuttleless loom of the type having a continuous weft supply and in which a selected weft thread coming from a fixed bobbin mounted at a point spaced from the fabric prepared on the loom remains attached to the edge of that fabric during the movement of a picking needle inside the shed and until after it has been beaten into the fabric, is constructed of an upper L-shaped lever and a lower L-shaped lever, fulcrumed at their midpoint on a common pin to provide a gap between them which is located in the path of the weft thread. Each lever supports a transverse cutting blade at one end and, at its other end, a sliding roller which rides on an associated control cam.Type: GrantFiled: April 29, 1975Date of Patent: June 28, 1977Assignee: Nuovo Pignone, S.p.A.Inventor: Nicola Santucci
-
Patent number: 3998249Abstract: The cut-off device is used to cut the selvage of a woven fabric and includes a movable member which is driven by means of a pivotally mounted lever and a flat disc. The disc is carried on a pivotal drive element which is reciprocated off a drive shaft of the machine. The drive shaft disc and lever are located below the fabric plane so as to be moved out of the way should the need arise to repair a broken weft thread.Type: GrantFiled: September 11, 1975Date of Patent: December 21, 1976Assignee: Sulzer Brothers LimitedInventor: Erwin Pfarrwaller
-
Patent number: 3951179Abstract: The anvil element and severing element are mounted so that the cutting edge or the thread supporting surface or both can adjust to the other during a severing operation. To this end, one or the other or both elements are pivotally mounted on their respective levers. In addition, a power storage means in the form of a spring or compressed air tank is connected to one or the other or both elements to absorb the force of impact of the severing element on the anvil element.Type: GrantFiled: October 29, 1974Date of Patent: April 20, 1976Assignee: Sulzer Brothers LimitedInventor: Erwin Pfarrwaller
-
Patent number: 3934526Abstract: An ultrasonic cutting apparatus comprising a tuning fork or U-shaped flexural member having legs on which cutting means are mounted, and an ultrasonic drive connected to the flexural member for inducing ultrasonic vibrations in the flexural member. Also disclosed herein is an ultrasonic drive member having a "folded over" resonant holder, and a piezoelectric crystal compressively mounted in the holder by coupling means for transmitting the ultrasonic excitation from the drive to the flexural member.Type: GrantFiled: December 12, 1974Date of Patent: January 27, 1976Assignee: Cavitron CorporationInventors: Martin A. Damast, Vincent P. Abberton, Kusler Celestin