Interconnected Let-offs And Take-ups Patents (Class 139/99)
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Patent number: 10415161Abstract: To provide a gauze woven fabric which has excellent opaqueness, moisture retention properties, water absorbency and comfort for skin while maintaining light weight and air permeability which are characteristic properties of gauze woven fabrics. Warps are supplied from a first beam, and wefts are then drawn across the warps to form a tight layer A. Warps are supplied from a second beam that has a higher supply speed than that of the first beam, and wefts are then drawn across the warps to form a loosened layer B. Subsequently, knotting points for connecting the layer A to the layer B regularly are formed.Type: GrantFiled: December 10, 2014Date of Patent: September 17, 2019Assignee: UCHINO CO., LTD.Inventor: Shuichi Hozumi
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Patent number: 7857011Abstract: A drive system for a weaving loom includes a switching wheel (5) which can be driven by of a main drive motor (7) and can be axially displaced between at least two switching positions, which, in a first switching position, is in drive connection with two groups of elements to be driven (9, 10, 11; 12, 13, 14) and, in a second switching position, is disengaged from one of the groups of elements to be driven (12, 13, 14). A device (15) is provided which becomes active as the drive connection with one group is disengaged and which has a tooth element (22) which engages with a gear wheel (12) of the group of elements to be driven (12, 13, 14) and disengaged from the switching wheel (5).Type: GrantFiled: July 2, 2005Date of Patent: December 28, 2010Assignee: Picanol N.V.Inventor: Marc Adriaen
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Patent number: 7481249Abstract: A reed drive of a loom includes a reed shaft connected to a reed. A conversion gearing having an input element and an output element is provided at each end of the reed shaft. The input elements are coupled to driven shafts of electromotive rotary drives to produce a common rotational motion with the same rotational speed as the driven shafts. The conversion gearings convert the rotating motion of their input elements into a reversible rotation of the output elements, and the output elements are coupled to the reed shaft in a rotationally fixed manner. Thus, the number of complete rotations of an input element is equal to the number of complete motion cycles of the reed shaft per unit of time.Type: GrantFiled: August 26, 2005Date of Patent: January 27, 2009Assignee: Lindauer DORNIER Gesellschaft mbHInventors: Valentin Krumm, Dietmar Von Zwehl, Michael Lehmann, Thomas Laukamp
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Patent number: 7341077Abstract: A loom having a first drive motor (10), which for instance drives a batten (13), and having at least one second drive motor (44), which drives a dobby (46), is provided with a control and regulating device (48), which forms a rotational angle course for a virtual synchronization shaft of the loom and communicates such rotational angle course to respective control and regulating units (49, 51) of each of the drive motors (10, 44), which synchronize the drive motors in at least one angular position relative to the virtual synchronization shaft.Type: GrantFiled: April 7, 2004Date of Patent: March 11, 2008Assignee: Picanol N.V.Inventor: Dirk Sampers
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Patent number: 6945282Abstract: A shed-forming device and a method for using it are provided for creating a shed of warp yarns in a weaving machine. The shed-forming device includes a plurality of yarn separating elements operably disposed to one another within the weaving machine. The yarn separating elements individually separate the warp yarns into operational zones between the yarn separating element. A fluid supply apparatus supplies fluid to the yarn separating elements in the shed-forming device. The yarn separating elements direct the fluid to contact the warp yarns, forcing the warp yarns to form changeable sheds to allow proper weaving.Type: GrantFiled: June 17, 2002Date of Patent: September 20, 2005Inventors: Flora Gendelman, Mikhail Gendelman
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Patent number: 5958804Abstract: The invention provides fabrics having improved ballistic performance and processes for making the same. The fabrics include a network of consolidated multifilament yarns formed of high strength filaments. At least a portion of the high strength filaments of the yarns, are temporarily locked together to provide a substantially stable, flattened cross-sectional configuration to the yarns. The resultant fabrics are capable of absorbing an impact from a projectile, i.e., a bullet or shrapnel, directed toward the fabric and substantially decreasing its velocity. The fabric can also provide slippage or movement of the yarns relative to one another to dissipate the energy of impact of a projectile across a greater surface area of the fabric.Type: GrantFiled: May 27, 1997Date of Patent: September 28, 1999Assignee: Hexcel CS CorporationInventors: Gordon L. Brown, Jr., Dieter R. Wachter, Mark A. Anderson
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Patent number: 5538048Abstract: A system and method for regulating the cloth fell position in a loom. The desired lengths of cloth and warp thread are determined by averaging the actual values over a given number of weft insertions. The actual lengths of the cloth and warp thread are then continuously measured and compared with the desired values during weaving to compute warp and cloth offset values. A correction factor is determined based on the offset values and the moduli of elasticity of the warp thread and cloth. The cloth fell position is then corrected by adjusting either the actual length of the cloth or the warp thread based on the correction factor.Type: GrantFiled: March 23, 1995Date of Patent: July 23, 1996Assignee: Sulzer R uti AGInventor: Godert De Jager
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Patent number: 5487413Abstract: A loom is slowly operated in reverse rotation to move the loom to a position where a cutter is able to easily cut an improper weft when there occurs an error in the picking motion. Then, the loom is operated in normal rotation to move it to a position where the improper weft remaining in the shedding motion can be easily removed. A pick finding device is then operated to temporarily separate a main shaft and the shedding motion, and a harness frame is reversely rotated for 360.degree.. A new weft is then inserted after the improper weft is removed from the shedding motion. In the course of the operation, a cloth fell is held at a fixed position to protect the cloth fell from being beaten by a reed. The take-up motion is then operated in normal rotation, and at the same time the let-off motion is rotated in the reverse direction at a fixed rotational ratio to provide a warp with proper tension.Type: GrantFiled: October 18, 1994Date of Patent: January 30, 1996Assignee: Kabushiki Kaisha Ishikawa Seisakusho, Ltd.Inventors: Kunio Hatakeyama, Yoshihiko Habu
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Patent number: 5421377Abstract: A process for producing woven fabrics which includes the steps of i) producing a stabilized size-free flat multifilament yarn, ii) forming a warp form the flat multifilament yarn of step i), III) leasing the warp formed in step ii) into the heddles of the shafts and into the reed of a weaving machine, and iv) producing a woven fabric through the insertion of warp threads in the transverse direction to the coarse of the warp at a weft insertion frequency of at least 300 picks/minute. The tension on the stabilized and size-free flat multifilament yarn does not exceed 1.0 cN/dtex. Also described is a woven fabric having warp threads based on stabilized flat multifilament yarns woven without size, whose warp thread density is more than 30 ends/cm and whose weft thread density is at least 30 picks/cm.Type: GrantFiled: August 11, 1994Date of Patent: June 6, 1995Assignee: Hoechst AktiengesellschaftInventor: Burkhard Bonigk
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Patent number: 5386855Abstract: A device for automatically varying, during the transient states following loom stoppages, the shed vertex position in the loom. The device consists of a sensor for determining the beat-up pulse intensity of the loom reed. The device also is connected to a comparator which receives a predetermined set value corresponding to the beat-up pulse intensity of the reed during normal operation. The output of the comparator is used, through a control unit, to synchronously drive the electric motors that operate the beam and the take-up roller of the loom, respectively.Type: GrantFiled: October 14, 1993Date of Patent: February 7, 1995Assignee: Nuovopignone-Industrie Meccaniche E Fonderia SpAInventors: Luciano Corain, Spanevello Roberto, Marco Novella
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Patent number: 5335698Abstract: A method of restarting a loom after an interruption in the weaving process. A cloth fell (15) is moved from an operative or beating position (15) to a second position (15') away from a sley (4). The weft yarn is prevented from being fed into a shed (20) and the loom is then driven in a idling motion for a number of weaving cycles. A shed forming motion 3 and at least one of the warp let-off motion 10 and the cloth take-up motion 12 are driven independently of the predetermined weaving program. When the loom has reached its original dynamic operative state and the warp threads are at the original operative tension, the cloth fell is advanced to the beating position of the sley and the loom is restarted according to the predetermined weaving program. This method prevents visible points of start from occurring in the fabric because of the interruption in the weaving process.Type: GrantFiled: April 20, 1993Date of Patent: August 9, 1994Assignee: Sulzer Rueti AGInventors: Klaus Berktold, Kurt Gunther, Anton Egloff
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Patent number: 5170821Abstract: A warp tension control apparatus includes a tension detector for detecting the tension of a warp and an operation mode controller for generating a control signal to drive a motor so as to minimize the deviation between the detected tension and a normal target tension. A long period stop mode controller is included for controlling the tension so that a target slack tension is set to be less than the normal target tension when a loom stop signal has been issued. A selector switch is provided for selectively switching to a contact connected to an output of the long period stop mode controller before entering a long unmanned operating period of the loom, the switch being disposed in a circuit between an input terminal of the long period stop mode controller which receives a loom stop signal and a warp tension slack device.Type: GrantFiled: May 9, 1991Date of Patent: December 15, 1992Assignee: Tsudakoma Corp.Inventor: Toshio Yoshida
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Patent number: 5069257Abstract: The warp beam and/or cloth beam of a loom is driven by a programmable stepping motor. The speed of the motor is regulated, preferably in such a way that the tension of the warp threads remains constant. Improved tension control is obtained by further programming the motor to take into account the type of weave in the fabric being produced. This is accomplished by inputting information pertaining to the distance covered by the warp threads between their intersections with neighboring weft threads.Type: GrantFiled: April 5, 1990Date of Patent: December 3, 1991Inventor: Fred Borisch
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Patent number: 5024253Abstract: A take-up rate and a let-off rate in warp feed on a loom are controlled while a displacement (.DELTA.L) of a cloth fell position C is taken into account. The system comprises a cloth fell position compensation circuit (2, 16, 21) which outputs a cloth fell compensation signal (.DELTA..omega..sub.c) to compenate a displacement (.DELTA.L) of the cloth fell position (C) when a weaving condition such as a target weft density (D*), a target warp tension (T*) or the kinds of weft and warp yarns is changed. The cloth fell compensation signal is added to a basic warp feed rate (.omega..sub.f) obtained from D*, so that the displacement motion of the cloth fell is completed in a shorter time. According to this compensation, a weft density of a resultant fabric rapidly coincides with the target weft density.Type: GrantFiled: December 28, 1989Date of Patent: June 18, 1991Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Kabushiki Kaisha Toyoda JidoshokkiInventors: Susumu Kawabata, Kazunori Yoshida, Yoshikatsu Kisanuki, Hajime Suzuki, Masao Shiraki
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Patent number: 4942908Abstract: A warp transfer control system for a loom, includes a first actuator for varying a warp let-off speed, a second actuator for varying a fabric take-up speed to change a filling density, and a control unit which has a take-up control section for controlling the second actuator, a feedback control section for controlling the let-off speed through the first actuator when no change is required in the filling density, and a feedforward control section for changing the let-off speed so as to improve an appearance quality of a fabric when the density is changed. When a change from a first filling density to a second density is required, the feedforward section first changes the let-off speed excessively from a first let-off speed corresponding to the first density beyond a second let-off speed corresponding to the second density, and holds the let-off speed at such an excessive level for a limited duration.Type: GrantFiled: March 29, 1989Date of Patent: July 24, 1990Assignee: Nissan Motor Co., Ltd.Inventor: Shuichiro Imamura
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Patent number: 4817677Abstract: Method for controlling the warp let-off on weaving machines, with the characteristic that the method consists of: detecting the variation with time of at least one of the parameters which are a function of the warp tension and speed of motion of the warp threads; taking the detected signal and removing the effects due to variations in the weave pattern; and using the resulting cleaned signal to control at least one warp drive motor.Type: GrantFiled: August 21, 1987Date of Patent: April 4, 1989Assignee: Picanol N.V.Inventors: Filip Deconinck, Johan Cappelaere, Michel Vandeweghe
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Patent number: 4768564Abstract: A wireless let-off and take-up control system for controlling the let-off motion and take-up mechanism of a loom or looms by wireless. The control system comprises a portable transmitter or transmitters, and a receiver or receivers each associated with the controller of a loom for controlling the let-off motion and take-up mechanism of the loom. Instructions for controlling the let-off motion and the take-up mechanism are given by wireless by operating the transmitter through the receiver to the controller of the loom at an optional position around the loom, so that a single operator is able to observe the movement of warps and, if necessary, to vibrate the warps in order to enable the warps to move smoothly past the droppers, the mails of heddles and reed of the loom in preparing a new warp beam for weaving operation on the loom.Type: GrantFiled: October 2, 1987Date of Patent: September 6, 1988Assignee: Tsudakoma Corp.Inventor: Shigeo Yamada
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Patent number: 4619294Abstract: Motor-driven let-off and take-up motions in a loom are controlled by controlling the rotation of a motor for driving warp yarns with a tension control system operating in response to a signal indicative of a target tension and a feedback input signal indicative of an actual tension of the object during a normal operation of the loom, and controlling the rotation of the motor with a feedforward control system during a transient operation of the loom, the feedforward control system storing operation patterns of directions, and speeds of rotation and angular displacement of the motor for respective operation modes and weaving conditions of the loom. At the time of the transient operation, and operating condition of the loom is detected, an appropriate operation pattern is read from the feedforward control system based on the detected operation mode, and the read operation pattern is applied as a control signal to a drive control system for the motor.Type: GrantFiled: January 17, 1985Date of Patent: October 28, 1986Assignee: Tsudakoma Corp.Inventors: Tsutomu Sainen, Takeshi Asai
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Patent number: 4605044Abstract: A takeup motion control device for a loom includes an input setting unit for producing functions of a repetitive period and a takeup speed, a function generator for storing the functions in relation to r.p.m. of the loom, an arithmetic control unit for successively reading out the selected functions from the function generator in synchronism with rotation of the loom to generate a digital takeup command signal, a driver circuit for generating a drive signal in response to the takeup command signal and applying the drive signal to a servomotor for driving a winding roll to wind a woven fabric, and a digital feedback circuit for feeding an amount of rotation of the servomotor back to the arithmetic control unit.Type: GrantFiled: February 22, 1985Date of Patent: August 12, 1986Assignee: Tsudakoma Corp.Inventor: Toshiyuki Sakano
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Patent number: 4585037Abstract: A method of regulating the tension of warp yarns in a weaving machine is disclosed herein. In a preferred embodiment of the invention, variation in warp yarn tension is detected by a tension roller which is movable with a change in the tension. The speed at which a warp beam is rotated is controlled in dependence upon the manner of the tension roller movement in such a way that its unwinding rotation during normal weaving operation of the machine is speeded up with an increase in the warp yarn tension and slowed down with a decrease therein, and also that its rewinding rotation during reversing operation of the machine is decelerated with an increase in the warp yarn tension and accelerated with a decrease in the tension.Type: GrantFiled: November 21, 1983Date of Patent: April 29, 1986Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventor: Masahiko Kimbara
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Patent number: 4402347Abstract: A loom capable of weaving a wide variety of cloths, the loom requiring at most the simple exchange of gears to permit it to weave cloths of widely varying characteristics. The loom has an input driving element for the warp beam let-off motion which is drivingly connected with the output element of an adjustable transmission mechanism of the let-off motion drive, while the input element of the adjustable transmission element of the let-off motion drive is drivingly connected with the transmission mechanism of the positive drive of the cloth take-up beam. The input element of the adjustable transmission of the let-off motion drive is drivingly connected with the output element of the transmission mechanism of the positive drive for the take-up beam, the take-up beam being also drivingly connected with such output element.Type: GrantFiled: April 14, 1981Date of Patent: September 6, 1983Assignee: Vyzkumny a vyvojovy ustav Zavodu vseobecneho strojirenstviInventors: Otto Rotrekl, Vladimir Kuda
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Patent number: 4164963Abstract: A narrow woven stretch fabric is formed from bare elastomeric warp threads separated by high shrink warp threads and from a high shrink weft thread. The edge elastomeric warp threads are loosely wrapped with heat set yarn. These edge threads, which are under the same tension as the other elastomeric warp threads, are wrapped between the supply and the loom. The weft thread is interwoven at a low weft per inch and the fabric is heat treated to shrink the non-elastic high shrink threads and corrugate the elastomeric threads without heat setting. The wrapping device and the surface feed rollers for the elastomeric threads are driven by the loom drive at appropriate speeds.Type: GrantFiled: September 7, 1977Date of Patent: August 21, 1979Assignee: J. F. Stevens & Co., Inc.Inventor: Thomas C. Black
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Patent number: 4125131Abstract: A loom including a drive device for weaving fabric from warp yarn extending from a source over a back rest provided adjacent one end of the loom and after being woven into fabric being fed over a breast beam positioned adjacent the other end of the loom. A driven roll over which the warp is guided without slippage is disposed in front of the back rest and at least one driven delivery roller over which the woven goods is guided without slippage is disposed after the breast beam. The guide roller and the delivery roller are driven in synchronism and there is a driving connection therebetween, as well as with the main drive shaft of the loom.Type: GrantFiled: September 8, 1977Date of Patent: November 14, 1978Assignee: Adolph SaurerInventor: Allan W. H. Porter
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Patent number: 3934620Abstract: To provide synchronization between the drawing roller and the warp beam of a loom, direct transmission is provided between the two members by means of an intermediate shaft which is independent of the speed of the loom. Any variation in the density of the fabric is transmitted to the intermediate shaft and an automatic adjustment is afforded in the drawing roller and the warp beam.Type: GrantFiled: November 15, 1973Date of Patent: January 27, 1976Inventor: Francisco Marlasca Garcia