By Gripper Shuttle Patents (Class 139/438)
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Patent number: 11753753Abstract: A driving-force transmission mechanism includes a driving-force transmission shaft that is provided so as to protrude from a side wall of a side frame while extending parallel to a driving shaft 30 within a space of the side frame, the driving-force transmission shall being connected to a driving motor, and to which an opening device is connected, and a transmission mechanism that connects the driving-force transmission shaft and the driving shaft, and a braking device is connected to the driving-force transmission shaft.Type: GrantFiled: May 28, 2021Date of Patent: September 12, 2023Assignee: TSUDAKOMA KOGYO KABUSHIKI KAISHAInventors: Keiichi Myogi, Daigo Yamagishi, Koichi Tamura, Kazuya Yama
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Patent number: 11732389Abstract: A driving-force transmission mechanism includes a driving-force transmission shaft that is provided so as to protrude from a side wall of a side frame while extending parallel to a driving shaft within a space of the side frame and connected to a driving motor, and a transmission mechanism that connects the driving-force transmission shaft and the driving shaft, the transmission mechanism connects the driving-force transmission shaft and the driving shaft at a position on a main shaft side in a width direction of the side frame from a connection position between the driving shaft and a swing mechanism.Type: GrantFiled: May 28, 2021Date of Patent: August 22, 2023Assignee: TSUDAKOMA KOGYO KABUSHIKI KAISHAInventors: Keiichi Myogi, Daigo Yamagishi, Koichi Tamura, Kazuya Yama
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Patent number: 11591724Abstract: A driving-force transmission mechanism includes a driving-force transmission shaft that is provided so as to protrude from a side wall of a side frame while extending parallel to a driving shaft within a space of the side frame and connected to a driving motor, and a gear train that connects the driving-force transmission shaft and a driving shaft.Type: GrantFiled: May 28, 2021Date of Patent: February 28, 2023Assignee: TSUDAKOMA KOGYO KABUSHIKI KAISHAInventors: Keiichi Myogi, Daigo Yamagishi, Koichi Tamura, Kazuya Yama
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Patent number: 8656962Abstract: A gripper head of a weaving machine has a clamping device for clamping a band-shaped weft material to be inserted into a loom shed of the weaving machine. The clamping device includes a stationary clamping jaw and a movable clamping jaw that is loaded by a spring and movable about a rotation axis. Each clamping jaw respectively has a clamping surface. The movable clamping jaw is actuatable by a control device to open the clamping device. The gripper head includes a frame, and the clamping surfaces are arranged essentially outside of the frame, but the spring and the rotation axis are arranged inside the frame.Type: GrantFiled: July 6, 2010Date of Patent: February 25, 2014Assignee: Lindauer Dornier Gesellschaft mbHInventor: Othmar Oppl
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Patent number: 7231943Abstract: A power weaving loom includes weft thread insertion and collecting bands (6, 7). Drive units drive the bands and cause leading parts of the bands to move towards and away from one another between sides of the weaving machine and an approximately half-width position (13) of the machine. The bands include grippers (6b, 7b), which allow the weft thread to be drawn from a first side of the machine to the approximately half-width position and then to a second side of the machine. The drive units include servomotors which are coordinated to act upon the bands via motion-transmitting members with a torque that allows inward and return motions of the bands during brief shedding times, thus providing high machine picking speeds even in machines of great width.Type: GrantFiled: December 29, 2003Date of Patent: June 19, 2007Assignee: Texo ABInventor: Stefan Svensson
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Patent number: 7124783Abstract: A rapier for a rapier loom comprises:—a low mass self-tightening rotary clamp with its axis of rotation aligned to the direction of maximum acceleration;—a collapsing pivot linkage that converts the force used to close the self-tightening clamp into the force used to open it;—a piezo-electric trigger device system that controls the change of state of the collapsing pivot linkage wherein the device is charged at the start of the insertion cycle and discharged at the centre of the loom to change the state of the system; and an electronic circuit comprising a photo-transistor that is connected with the piezo-electric of the trigger system such that when a suitable level of light is introduced to the device the actuator becomes dischargedType: GrantFiled: September 17, 2002Date of Patent: October 24, 2006Assignee: PBT (IP) LimitedInventors: Simon Powell, Paul Michael Weaver
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Patent number: 6973942Abstract: Weft carrying grippers (1, 2), of the type wherein the grippers are made of metal and are driven in their back-and-forth movements through the shed by carbon-fibre and/or polyester straps exclusively guided from outside the shed are both characterised by a metal shoe (3, 4) integrated in the gripper and projecting from the bottom thereof, near the tip, to which it is radiussed and in that the shoe (3, 4) has a large central recess (7, 8), designed to host the ends (12, 13) of the driving strap (10, 11), which is narrower than the rest of the strap and thinner than the recess (7, 8) of the shoe.Type: GrantFiled: June 13, 2003Date of Patent: December 13, 2005Assignee: Promatech S.p.A.Inventors: Massimo Arrigoni, Francesco Alghisi
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Patent number: 6892766Abstract: A loom for weaving three dimensional woven structures which include interwoven bias fibers and at least one integrally woven junction. The loom includes bias fiber holders, bias shuttles, and independently controllable bias arms to interweave the bias fibers. Each bias fiber holder holds a bias fiber under tension. The bias shuttles may releasably grip a number of the bias fiber holders and translate them horizontally between a plurality of predetermined horizontal positions. Each bias shuttle is at a separate vertical position. At least one bias shuttle translates above the shed and at least one bias shuttle translates below the shed. Each independently controllable bias arm may releasably grip one of the bias fiber holders and translate it vertically, at one of the predetermined horizontal positions, with a range of motion extending at least between two of the bias shuttles.Type: GrantFiled: March 2, 2004Date of Patent: May 17, 2005Assignee: Bally Ribbon MillsInventors: Leon Bryn, Samir A. Nayfeh, M. Amirul Islam, William L. Lowery, Jr., Herbert D. Harries, III
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Patent number: 6889720Abstract: A method and device involve simultaneously inserting weft/binding yarns and beating them up, in textile manufacturing processes like 3D-weaving and uniaxial noobing. A yarn carrier is equipped with a beating-up reed dent. In the carrier, which includes a cartridge-like yarn supplying device, the yarn is arranged around two axes of rotation and it is enclosed in a case. It is particularly suitable for 3D textile-forming processes like 3D-weaving and uniaxial noobing because of its relatively low-height but high-width and hence the possibility of carrying relatively large amount of yarn. The yarn is contained on a flanged belt that can be driven either from within or from the outside. Such a cartridge-like yarn supplier is equipped with tips that are offset or displaced oppositely about the central axis. Such a displaced arrangement of the tips directs the carriers to lay yarn in two different paths, relative to a layer of warp/axial yarns, while traversing back and forth in the same linear path.Type: GrantFiled: March 6, 2001Date of Patent: May 10, 2005Assignee: Biteam ABInventor: Nandan Khokar
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Patent number: 6845792Abstract: Thread clamping arrangement for a carrier gripper of a rapier loom wherein the arrangement includes a rigid support coupled to a lateral wall of a body of the carrier gripper. Each of an elongated first clamping element and an elongated second clamping element are provided. A clamping gap is formed by the first and second clamping elements. A magnet is included that exerts an attracting force on each of the first and second clamping elements.Type: GrantFiled: April 1, 2002Date of Patent: January 25, 2005Assignee: Gividi-Italia SpAInventors: Diego Armando Scari, Marco Scari
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Patent number: 6491068Abstract: An apparatus for the heating of a lubricating oil for a weaving machine contains at least one heating element with at least one semiconductor and temperature regulator with a sensor.Type: GrantFiled: May 12, 2000Date of Patent: December 10, 2002Assignee: Sulzer Textil AGInventors: Dietmar Markward, Erich Gasser
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Patent number: 6167918Abstract: In a rapier for a gripper loom, the rapier is made of synthetic material and includes at least one layer of reinforcing fibers. The gripper is mounted at the front end of the rapier, and the layer of reinforcing fibers begins at a distance away from said front end.Type: GrantFiled: April 26, 1996Date of Patent: January 2, 2001Assignee: Picanol N.V.Inventor: Denis Moeneclaey
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Patent number: 6158479Abstract: Shooting and guide members for a shuttle are arranged in a weaving machine. The shooting member comprises an air pressure source which supplies compressed air to one or more acceleration nozzles. The acceleration nozzle or nozzles are arranged to accommodate the shuttle at the time of shooting and, depending on the compressed-air supply, generating one or more air jets. The shuttle is made with surfaces which can be exposed to the air jets. The nozzle and guide members are arranged so as to guide the shuttle at least at the beginning of its shooting trajectory, when the air jet of the acceleration nozzle are brought into effect.Type: GrantFiled: February 26, 1999Date of Patent: December 12, 2000Assignee: Texo ABInventor: Bo Lindblom
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Patent number: 6089281Abstract: A gripper for transporting filling yarn in a projectile (A) across a loom for insertion during weaving is carried by spring arms (B). The gripper includes opposed jaws one of which has a V-shaped inner surface (C) and the other jaw has a W-shaped inner surface (D) receiving an end of filling yarn (Y) when the gripper is closed. The method includes transporting the filling yarn across the loom while engaged by the opposed interengaging inner surfaces of the jaws.Type: GrantFiled: April 15, 1999Date of Patent: July 18, 2000Assignee: Precision Research & Development, Inc.Inventor: Douglas McArthur Anderson
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Patent number: 6006795Abstract: A device for weft yarn presentation in a shuttleless loom is operated by linear electric motors. The motors include fixed plates and movable plates pivotally mounted to the fixed plates. Yarn presenting rods are carried by the pivotal plates and rotate from raised stand-by positions to lowered delivery positions. The respective axes of rotation of the pivoted plates are arranged on a line skewed to the path of movement of the gripper so that the weft yarn delivery positions are close together.Type: GrantFiled: May 11, 1998Date of Patent: December 28, 1999Inventors: Luciano Corain, Luigi Corazzola, Giulio Bortoli
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Patent number: 5862837Abstract: A thread holder comprises two holding members which form a gap that has a round cross-sectional shape and increasing width. Each of the thread holders is journalled on the other holding member at at least one bearing location which is executed as a bearing surface. With this arrangement the journalled holding member can easily assume a holding position that is ideal for a thread being used. The thread holder is suitable in particular for a bringer rapier of a rapier weaving machine.Type: GrantFiled: October 15, 1996Date of Patent: January 26, 1999Assignee: Sulzer Rueti AGInventors: Kurt Guenther, Anton Egloff, Paul Lincke
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Patent number: 5632309Abstract: The gripper projectile has a housing (1), a weft yarn clip (2) and a connector element (3) in order to connect the housing and the weft yarn clip. Furthermore, unitary portions protruding outward from the outer side of each respective leg are provided for biasing the clip legs in order to produce a predetermined gripping force, with the gripping force setting itself automatically on assembly of the weft yarn clip.Type: GrantFiled: December 15, 1995Date of Patent: May 27, 1997Assignee: Sulzer Rueti AGInventor: Josef Kaufmann
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Patent number: 5386853Abstract: A gripper loom with pneumatic gripper cleaning apparatus is outfitted with at least one gripper associated with a blowing nozzle outside of the weaving area. The blowing nozzle is associated with a suction nozzle on the opposite side of the gripper. The gripper is constructed in such a way that it allows air to pass from the blowing nozzle to the suction nozzle. This enables an intensive and complete cleaning of the gripper and prevents soiling of other structural component parts.Type: GrantFiled: October 23, 1992Date of Patent: February 7, 1995Assignee: Textilma AGInventor: Francisco Speich
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Patent number: 5247968Abstract: A projectile loom is distinguished by a combination wherein a weft yarn changer (1) has a low-weight body (11) and low-weight yarn transfer elements (2) and the multiple weft device is driven directly by a highly dynamic servo motor (3). The loom can be operated at speeds above 350 rpm. The changer body (11) is made, for example, of aluminum and the slide bar (2a) of the yarn transfer element (2) is made of a mixture of plastics and fibers.Type: GrantFiled: September 1, 1992Date of Patent: September 28, 1993Assignee: Sulzer Brothers LimitedInventors: Oskar Hubner, Rudolf Stauner
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Patent number: 5209272Abstract: A weft yarn changer on a projectile loom has a pivoted changer member (1) for at least two yarn transfer elements (2) each in the form of a slide rod (2a) and a yarn gripper (21). Slide bars for the yarn transfer elements (2) are provided on the changer member (1) and are connected by at least one lightweight plastics holder to a tube effective as a drive shaft of the changer member or as a pivot spindle. The inventive weft yarn changer yields reduced actuation times.Type: GrantFiled: March 30, 1992Date of Patent: May 11, 1993Assignee: Sulzer Brothers LimitedInventors: Peter Riesen, Marc Gianotti
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Patent number: 5186218Abstract: A weft yarn changer on a projectile loom has a pivoted changer member (1) for at least two yarn transfer elements (2) each in the form of a slide rod (2a) and a yarn gripper (21). The slide rod (2a) is made of plastic and is longer radially than tangentially in the pivoting direction relative to the pivoting axis. A duct (24) oriented in the sliding direction forms a cavity which is particularly suitable as a yarn guide. The inventive yarn changer has short actuation times.Type: GrantFiled: March 17, 1992Date of Patent: February 16, 1993Assignee: Sulzer Brothers LimitedInventor: Peter Riesen
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Patent number: 5083585Abstract: A fork-like clamp element is provided for a weft yarn clamp for use in a rapier loom. The fork-like clamp element includes a clamping tongue, a securing part for securement in a rapier giver or rapier taker and a presser opposite the securing part. The securing part includes a resiliently flexible zone so that upon movement of the presser towards the securing part, the zone is able to yield resiliently and, thus, allow the tongue to move away from an opposite clamp element for release of a weft yarn therebetween.Type: GrantFiled: April 24, 1991Date of Patent: January 28, 1992Assignee: Sulzer Brothers LimitedInventor: Ursula Rheinganz
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Patent number: 5033515Abstract: A gripper projectile for weaving machines is partitioned in lengthwise direction according to a stepped partition line having at least one, but preferably several steps. A gripper spring device is inserted into the projectile and comprises two individual, mirror-image shaped, facing gripper springs secured by blocks in the projectile which penetrate into recesses of the springs. The projectile is assembled by laser or electron beam welding, or by cementing.Type: GrantFiled: December 15, 1989Date of Patent: July 23, 1991Inventor: Werner Sollberger
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Patent number: 5031670Abstract: A yarn-gripper device mounted on the weft-passing member in a weaving loom which includes a movable jaw element which pivots about a first axis against the action of an elastic element which urges the movable jaw to close with a fixed jaw to grip yarn therebetween and which also includes an effort reducing lever which pivots about a second axis located between the first axis and the elastic element and which lever is engagable with movable jaw to open the jaw against the elastic element.Type: GrantFiled: March 13, 1990Date of Patent: July 16, 1991Inventor: Aime Fabre
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Patent number: 4915143Abstract: An apparatus for the selective feeding of one of a plurality of weft threads (1) to a gripper projectile, which moves along a projectile path (2), includes a plurality of displaceable feeders (3) each having a feeder clamp (7) for retaining a respective weft thread (1) in position for pick up, a knife (4) for cutting off the weft thread (1) after it has been drawn into the weaving shed by the gripper projectile, and a clamp for picking up the weft thread (1) from a feeder and drawing the weft thread (1) transversely across the projectile path (2) for engagement by the gripper projectile. The clamp is mounted on a rotatable ring (6) which is disposed perpendicular to the projectile path (2) which extends through the ring.Type: GrantFiled: March 16, 1989Date of Patent: April 10, 1990Assignee: Hermann Wangner GmbH & Co. KGInventor: Hans Grossmann
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Patent number: 4858657Abstract: A yarn cutting device for weaving looms having fixed reserves of weft and which operate with a gripper type weft-carrying shuttle wherein the shuttle supports a guiding member which carries the yarn towards the shed on the side of the loom. The guiding member includes two metal plates mounted between two resilient shims which allow the plates to be forced apart to receive a blade moved vertically into the path of the guiding member as the shuttle enters the shed to thereby sever the yarn. In an alternate embodiment, the guiding member is fixed adjacent the shed and the blade is carried by the shuttle.Type: GrantFiled: March 2, 1988Date of Patent: August 22, 1989Inventor: Aime Fabre
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Patent number: 4694867Abstract: The reed is intended for looms having a guiding channel for a weft thread inserter and includes a plurality of plates interconnected at their bottom parts and each having a recess. The recesses of the plates jointly define the open guiding channel for a moving weft inserter and for leading out the weft or filling thread. At their portions outside the shed the plates have projections or lugs extending toward the adjacent plates and spaced therefrom. This provides for keeping stable the dimensions of the guiding channel as the weft inserter moves therealong, and also facilitates threading of the warp through the reed.Type: GrantFiled: October 7, 1986Date of Patent: September 22, 1987Assignee: Klimovskoe Spetsialnoe Konstruktorskoe Bjuro Po Proektirovaniju Tkatskogo OborudovaniaInventors: Mikhail A. Gendelman, Anatoly F. Borodulin, Diana F. Golubeva, Sergei V. Bychkov
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Patent number: 4693282Abstract: A weaving machine having a lubricating system for lubricating the surface of picking instrumentalities during the operation of the weaving machine by supplying controlled droplets of lubricant in the amount of 0.01 through 0.05 cc at predetermined intervals and at consistent pressure in the range of from 50 to 300 psi.Type: GrantFiled: April 22, 1986Date of Patent: September 15, 1987Inventor: Leonard Campbell
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Patent number: 4529016Abstract: An apparatus for inserting weft wires in flat weaving power looms wherein a shuttle is moved by carriages which are disposed above and below the shed defined by the warp wires and which are guided by magnetic means and wherein the shuttle is a gripper shuttle, the shuttle and the carriages include permanent magnets, and the drive means for the carriages is one of a stepping motor, a speed-controlled three-phase current motor and a disk rotor motor which effects positioning of the carriages and thus of the gripper shuttle at the weft transfer points by a holding force.Type: GrantFiled: July 13, 1983Date of Patent: July 16, 1985Assignee: Hermann Wangner GmbH & Co. KGInventors: Ludwig Schlecht, Peter Defranceski
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Patent number: 4518019Abstract: The lubricator is disposed at the picking end of the picking element return device and has a guide duct for receiving a picking element prior to the next pick. The lubricator has oil mist nozzles which face only those surfaces of the picking element which will rub on the guide teeth in the next pick.Very low-quantity lubrication or lean lubrication is feasiable and soiling of the fabric by lubricant is obviated. The lubrication effect is sufficient to obviate metal abrasion between the picking element and the guide teeth so that soiling of the fabric by abraded metal can be avoided.Type: GrantFiled: August 16, 1983Date of Patent: May 21, 1985Assignee: Sulzer Brothers LimitedInventors: Otto Hintsch, Gerd Schmitz
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Patent number: 4294291Abstract: Shuttle control apparatus for looms having a shuttlebox rotatable 180.degree. from a first, shuttle receiving, position to a second picking position, means for checking and positioning the shuttle to a predetermined picking position within the shuttle box, and means for picking the shuttle. The control apparatus comprises means for guiding and maintaining the shuttle in the predetermined picking position during rotation of the shuttle box and means for braking the shuttle only when it is in the second position.Type: GrantFiled: May 15, 1980Date of Patent: October 13, 1981Assignee: Crompton & Knowles CorporationInventors: Philip A. Nims, Roger K. Bollinger
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Patent number: 4291731Abstract: Mechanism for launching grippers in gripper looms, in which the launching power source is stationary and the gripper is provided with a guideway and means for controlling and defining the gripper path, such means being connected to the beat-up mechanism of the loom. The mechanism has a launching arm and an impact element which is connected thereto by means of a connecting rod and pivotal joints on the launching arm, as well as on the impact element, each of which provides for two degrees of freedom of motion between each pair of parts which it connects.Type: GrantFiled: June 6, 1979Date of Patent: September 29, 1981Assignee: ELITEX, koncern textilniho strojirenstviInventors: Miloslav Prohazka, Karel Kaulich
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Patent number: 4205708Abstract: The lubricating system generates and delivers a programed sequence of gas (compressed air) pulses and lubricant-mist pulses to the lubricating stations of the textile machine. The pulses are determined by an electronic controller which selectively activates valves in the gas line and the lubricant-mist line. An extractor line is also positioned at each lubricating station for extracting lubricant-mist and dirt therefrom.Type: GrantFiled: April 3, 1978Date of Patent: June 3, 1980Assignee: Sulzer Brothers LimitedInventor: Herbert Burgbacher
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Patent number: 4117869Abstract: An apparatus and method for reducing contamination of areas ambient to a textile machine such as a machine having fabric forming instrumentalities for forming textile strand materials into fabric and a lubrication system for the fabric forming instrumentalities. In accordance with the present invention, an airstream is induced to flow adjacent the fabric forming instrumentalities, fine particles of lubricant are entrained in the airstream and conveyed thereby from the area of the fabric forming instrumentalities, and the lubricant is subsequently collected from the airstream.Type: GrantFiled: May 20, 1977Date of Patent: October 3, 1978Assignee: Parks-Cramer (Great Britain) Ltd.Inventor: Reginald Rushman
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Patent number: 4111239Abstract: Facilities for temporarily holding a rear portion of a fluid-actuated piston rod coupled to a gripper shuttle in a weaving loom are described. Pressurized fluid is cyclically introduced into a chamber that communicates at its rear end with an elastomeric reservoir and at its front end with the rear portion of a cylinder in which the piston rod moves, with a rear collar on the piston rod projecting into the chamber when the piston is in its rearmost launch position. A pivotally mounted fork is mounted in the chamber for normally engaging and immobilizing the collar on the piston rod. Prior to the initiation of launch, the fork is moved via a lever and pitman assembly from such locking position to a forward release position in which the piston rod may be propelled forwardly by pressurized fluid accumulated in the elastomeric reservoir.Type: GrantFiled: October 12, 1976Date of Patent: September 5, 1978Assignee: Elitex, Koncern textilniho strojirenstviInventor: Vladimir Svaty
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Patent number: 4108215Abstract: In gripper shuttle looms for a shuttle box which contains a groove for receiving a gripper shuttle and which rotates 180.degree. to turn the shuttle around and has a braking member which cooperates with the groove to check the shuttle in the groove, and wherein said braking member moves away from the groove to permit the shuttle box to be turned and the shuttle to be picked: restraining means located in the groove for restraining the shuttle against lateral movement along the longitudinal axis of the groove during the shuttle box turning motion and which maintains the shuttle in the proper position in the shuttle box and allows the shuttle to be picked out of the shuttle box.Type: GrantFiled: October 20, 1976Date of Patent: August 22, 1978Assignee: Crompton & Knowles CorporationInventor: John H. Osgood
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Patent number: 4082118Abstract: Improvement in pneumatic shuttle picking mechanism for looms which include a picking cylinder and a pump cylinder; a first piston slidably mounted within the picking cylinder and having attached thereto a piston rod which extends through the outlet end of the picking cylinder for picking engagement with the shuttle; a second piston slidably mounted within the pump cylinder and having attached thereto a piston rod which extends out of the inlet end of the pump cylinder for attachment to drive mechanism for reciprocating the second piston; conduits connecting the outlet side of the pump cylinder to the inlet side of the picking cylinder and the outlet side of the picking cylinder to the inlet side of the pump cylinder in a closed system; and a one-way valve located at one end of the pump cylinder which only allows air to enter the pump cylinder from the atmosphere and only when the pressure within the pump cylinder falls below atmospheric pressure.Type: GrantFiled: May 25, 1977Date of Patent: April 4, 1978Assignee: Crompton & Knowles CorporationInventor: Philip A. Nims
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Patent number: 4079758Abstract: A gripper shuttle loom is provided with apparatus for passing weft yarn through the warp, comprising a pair of opposed lances on opposite sides of the loom arranged to be moved in unison half way into the shed where gripper shuttles carried by the lances are exchanged. Each shuttle has a pair of jaws for clamping the yarn which is supplied from a single reserve located on one side of the loom where means is provided for cutting the yarn, and inserting the yarn between the jaws. On the other side of the loom means is arranged to open the jaws to release the yarn. Each lance includes a member operable when the lance is at the center of the shed, by a cam drive linked with the loom shaft, for releasing one gripper shuttle and locking the other to the lance.Type: GrantFiled: May 5, 1976Date of Patent: March 21, 1978Assignee: MintissInventor: Georges Conte
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Patent number: 4068686Abstract: Facilities for controllingly reciprocating a hydraulically-actuated piston coupled to a gripper shuttle are described. A first hydraulic fluid reservoir and the cylinder housing the shuttle-engaging piston are disposed in a unitary, substantially closed housing pivotally supported on a rotatable shaft of the loom. Piston-actuating fluid is cyclically introduced rearwardly of the piston into an elastomeric reservoir disposed behind and coupled to a perforated rear wall of the cylinder. Fluid from the first reservoir in the housing is periodically transferred into the second reservoir to launch the shuttle. To effect the return stroke of the piston, fluid from the first reservoir is transferred to the front end of the cylinder in timed relation to the fluid transfer to the second reservoir.Type: GrantFiled: August 30, 1976Date of Patent: January 17, 1978Assignee: Elitex, koncern textilniho strojirenstviInventor: Vladimir Svaty
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Patent number: 4027704Abstract: The method and device convert conventional shuttle looms into dummy shuttle looms, wherein weft yarns, unwound from stationary bobbins or the like outside the loom, are seized, pulled across the warp yarn shed and then released, by means of a so called dummy shuttle or weft gripper, at adjustably selected points along a dummy shuttle path extending along the loom slay, independently of the slay instantaneous position and movement direction. The slay motions and direction changes are utilized to selectively operate weft yarn bearers and weft gripper opening mechanisms for seizing the weft yarns and releasing the same, respectively, at the inlet and at the outlet of the dummy shuttle path across the shed.Type: GrantFiled: November 7, 1975Date of Patent: June 7, 1977Assignee: Campagnie des Brevets et Applications Industrielles EtablissementInventor: Bruno Romanin
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Patent number: 4015642Abstract: A shuttleless loom having at least one weft thread carrier movable across the whole shed for inserting a weft thread between the warp threads, and a device for throwing and recovering the weft thread carrier. The device comprises a guide for returning the carrier which has passed across the shed to the throwing position without stopping it and means such as a flywheel for accelerating the returned carrier to confer to it the initial throw speed. The flywheel defines the inner wall of a circular guide portion tangent to a throwing and a returning portion of the guide and has means for entraining the thread carrier. A controlled throw door causes the accelerated carrier to be timely thrown out of the circular guide portion for catching the weft thread and inserting it between the warp threads.Type: GrantFiled: February 23, 1976Date of Patent: April 5, 1977Inventor: Francesco Mollica
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Patent number: 3993104Abstract: The present invention relates to a weft pass loom comprising on the batten a shuttle provided with end grips for the weft threads as well as on the frame with devices for the correction of the shuttle position and for the opening of the shuttle grips, characterized in that it comprises, fixed to each of the sides of the frame, independent devices for correcting the position of the shuttle and for opening the grips, whereby each of these devices is provided with a regulating means.Type: GrantFiled: September 15, 1975Date of Patent: November 23, 1976Assignee: LeBocey IndustriesInventor: Jacques Palencher