Patents Assigned to Sulzer Rueti AG
  • Patent number: 5937913
    Abstract: Weft thread distributor apparatus for a series shed weaving machine in which a weft thread is fed into a connection channel via a supply nozzle and is distributed within the connection channel to shoot-in tubes. In order to achieve a trouble-free cutting off of the inserted weft and rerouting of the new weft thread tip a cutting device is placed spatially between the shoot-in tube and the clamping device in order that a retraction force and a loop standing under said retraction force are already formed due to of the supply nozzle and the injector nozzle prior to the stopping of the weft thread in the clamping device. During the stopping in the clamping device the thread is pre-tensioned in the cutting device and can be cut without difficulty. The loop unwraps itself and a new weft thread tip is inserted into the shoot-in tube.
    Type: Grant
    Filed: December 2, 1997
    Date of Patent: August 17, 1999
    Assignee: Sulzer Rueti AG
    Inventor: Marcel Christe
  • Patent number: 5904186
    Abstract: An improved series shed weaving machine includes a weaving rotor driven to rotate a plurality of mutually spaced-apart shed-forming sections for receiving warp threads. A plurality of separate weft thread presentation devices separately supply weft threads to only one of the plurality of spaced-apart shed-forming sections for weaving a separate web from the warp threads and the weft threads. Each spaced-apart shed-forming section includes a plurality of shed-forming elements which put the received warp threads into high and low positions to form a plurality of sheds which are open simultaneously so that a plurality of weft threads are simultaneously inserted into the plurality of sheds between the warp threads to weave the separate web.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: May 18, 1999
    Assignee: Sulzer Rueti Ag
    Inventor: Alois Steiner
  • Patent number: 5899242
    Abstract: In a bringer gripper for a thread clamp a carrier body is largely open in the upward direction and has a base part and two side walls in order to form upper guides for the warp threads at the reed side and at the cloth side. The side wall at the cloth side comprises a section which extends at an inclination towards the gripper tip. A yarn-protecting deflection of warp threads that are not positioned correctly within the shed is thereby attained.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: May 4, 1999
    Assignee: Sulzer Rueti AG
    Inventor: Anton Egloff
  • Patent number: 5890519
    Abstract: An apparatus for controlling a warp tensioner of a weaving machine. The apparatus contains a spring member that is in working connection with the warp tensioner and a control system that has a container communicating via a 2/2 way valve with the spring member in order to vary the spring stiffness of the spring member and the position of the warp tensioner from a terminal at the side where the weaver stands by increasing and decreasing the effective volume of the spring member.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: April 6, 1999
    Assignee: Sulzer Rueti AG
    Inventors: Godert De Jager, Frank Lehnert
  • Patent number: 5884674
    Abstract: A weaving rotor for a series shed weaving machine has shed holder elements arranged on the surface of the weaving rotor, with at least some of the shed holder elements arranged following one another in the circumferential direction of the weaving rotor being displaced in the axial direction with respect to the weaving rotor.
    Type: Grant
    Filed: July 22, 1997
    Date of Patent: March 23, 1999
    Assignee: Sulzer Rueti AG
    Inventor: Alois Steiner
  • Patent number: 5862837
    Abstract: 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: Grant
    Filed: October 15, 1996
    Date of Patent: January 26, 1999
    Assignee: Sulzer Rueti AG
    Inventors: Kurt Guenther, Anton Egloff, Paul Lincke
  • Patent number: 5827975
    Abstract: In the method a force F.sub.M is measured which has substantially the same magnitude over the pivotal range depending on the path of the warp and on the geometrical arrangement of the deflection member, of the tensioning member and of the pivot axis.The tension of the warp can thereby be substantially correctly determined independently of the position of the tensioning member by measurement of the force F.sub.M, and the measured value can be directly incorporated into the regulation of the warp let-off.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: October 27, 1998
    Assignee: Sulzer Rueti AG
    Inventors: Godert De Jager, Dietmar Markward, Lorant Gacsay
  • Patent number: 5826625
    Abstract: An arrangement comprises heald frames, linear drives and coupling apparatus that are collected together in groups. The linear drives of each group are arranged in a staggered fashion and form a drive unit. The coupling apparatus are executed in such a manner that the staggering within a group can be selected. With this arrangement an ideal ratio of drive power to required space is achieved. In addition, the elements forming a group are interchangeable.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: October 27, 1998
    Assignee: Sulzer Rueti AG
    Inventor: Robert Bucher
  • Patent number: 5762111
    Abstract: A weft cutting apparatus contains a first and a second cutting blade as well as a drive element which is connected to the second cutting blade and can be driven by the cloth directly. The cutting process is thereby synchronized with the speed of the cloth. The apparatus is arranged in a weaving machine in the region of the path of the cloth, wherein the apparatus can be placed at a suitable position independent of the weaving machine drive.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: June 9, 1998
    Assignee: Sulzer Rueti AG
    Inventor: Martin Frischknecht
  • Patent number: 5755267
    Abstract: A Jacquard weaving machine includes a weaving apparatus and a Jacquard apparatus, which are both connected to one another for the transmission of torque via a mechanical transmission device and are driven by a common motor. An additional drive device is provided which acts at least on the Jacquard apparatus. An angle sensor is provided for the measurement of an angle of rotation and/or a torque sensor is provided for the measurement of the torque present between the weaving machine and the Jacquard apparatus. The sensors are connected to a control device that controls the drive device in such a manner that peak values in the torque and/or fluctuations in the speed of rotation are reduced.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: May 26, 1998
    Assignee: Sulzer Rueti AG
    Inventors: Ernst Eberhard, Klaus Berktold
  • Patent number: 5711352
    Abstract: Apparatus containing a heald frame consisting of two heddle carrying rails and a plurality of linear drives with armature parts that are connected to the heddle carrying rails in such a way that the heald frame is guided free of play. Devices are utilized for connecting the armature parts and the heddle carrying rails. The devices comprise a plate that is secured to the heddle carrying rail and a holder that is secured to the armature part. The plate is provided with a slot, and the holder has a pin that engages the slot. The slot is dimensioned such that a compensation of the play is possible at the interface between the armature part and the heald frame in order to prevent jamming of the armature parts and the heald frame, while the slot enables a compensation in the direction transverse to the working direction of the heald frame.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: January 27, 1998
    Assignee: Sulzer Rueti AG
    Inventor: Robert Bucher
  • Patent number: 5684255
    Abstract: The apparatus contains a measurement unit comprising a signal transmitter (1), a yarn guidance member (2) and a resilient layer (4) arranged between the signal transmitter and the yarn guidance member and connected to them. Almost hysteresis-free operation is achieved as a result of the exposed arrangement of the layer and of the yarn guidance member.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 4, 1997
    Assignee: Sulzer Rueti AG
    Inventor: Godert De Jager
  • Patent number: 5666998
    Abstract: A sensor for detecting the stress profile of a thread that has moved. The sensor contains a signal generator, a thread guiding member and a body of resilient material. The signal generator is resiliently mounted in a vibration damping manner and in the manner of a cantilever in a body. Through this mounting arrangement the influence through mechanical action and also the influence of the thermal expansion caused by heat as a result of the heating up caused by the running thread are largely cancelled and thus measurement errors are avoided.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: September 16, 1997
    Assignee: Sulzer Rueti AG
    Inventors: Godert De Jager, Frank Lehnert, Rolf Benz
  • Patent number: 5657794
    Abstract: A carriage for changing a harness or heald frame on a loom has a frame with a device for offering up the warp beam, a framework which includes a carrier mounted on the frame, and devices mounted on the carrier for offering up the warp stop motions and the heald shafts. Relative movement between the offering-up device is thus prevented due to the fact that the devices are mounted together on the carrier.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: August 19, 1997
    Assignee: Sulzer Rueti AG
    Inventors: Emil Briner, Georg Senn
  • Patent number: 5657796
    Abstract: A series-shed weaving machine which has a machine frame. A warp beam and a weaving rotor are mounted on the frame and a reference plane extends between the axes of the warp beam and the rotor. A warp module is defined by a first subassembly, which includes an arrangement for warp run components of the machine, and a second subassembly, which includes an arrangement for cloth run components of the machine. It is mountable on the frame in first and second orientations in which one of the arrangements is on one side of the reference plane and the other one of the arrangements is on the other side of the reference plane and vice versa, respectively. Depending on whether the arrangement for the warp run is above or below the reference plane, the warp beam rotates in the clockwise or the counterclockwise direction, respectively.
    Type: Grant
    Filed: February 6, 1996
    Date of Patent: August 19, 1997
    Assignee: Sulzer Rueti AG
    Inventor: Alois Steiner
  • Patent number: 5649569
    Abstract: A warp tension measuring apparatus for weaving machines or looms has a force sensor or pick-up (3) and a member (2) which is in active communication with the force sensor (3) to transfer a force acting on the members (2) onto the force sensor. The force sensor (3) is provided with a resilient element (9) to improve the introduction of force, on the one hand, and to damp mechanical oscillations, on the other hand.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: July 22, 1997
    Assignee: Sulzer Rueti AG
    Inventors: Godert De Jager, Lorant Gacsay
  • Patent number: 5632308
    Abstract: Weft yarn is inserted into the weaving rotor of a series shed weaving machine. Four weft yarns (7; 71, 72, 73, 74) are conveyed into the weft yarn distribution apparatus (9) from four supply units (2a-2d) and four metering apparatuses (1a-1d). The weft yarn distribution apparatus (9) distributes the weft yarns (71-74) delivered to it to the sheds of the weaving rotor (100) which are currently open, with the weft yarns being inserted through stationary fluid nozzles (91, 92, 93, 94) into the rotating weaving rotor (100). During normal operation of the series shed weaving machine, the weft yarn (71-74) is continuously pulled from the weft yarn supply (2a-2d) by the metering apparatuses (1a-1d) and conveyed to the weft yarn distribution apparatus (9) which conducts the weft yarn (71-74) into an opened shed (103a-103d). The speed of conveyance of the weft yarn (71-74) during insertion into the shed (103a-103d) is thus determined by the metering apparatus (1a-1d).
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: May 27, 1997
    Assignee: Sulzer Rueti AG
    Inventors: Robert Bucher, Ernst Eberhard
  • Patent number: 5632309
    Abstract: 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: Grant
    Filed: December 15, 1995
    Date of Patent: May 27, 1997
    Assignee: Sulzer Rueti AG
    Inventor: Josef Kaufmann
  • Patent number: 5630449
    Abstract: In the method, a reed (3) for a weaving machine is continuously driven from a drive means (2) and the kinetic energy of the reed is stored in order to reduce the drive energy. The apparatus comprises an energy storer (1) and a drive means (2) in order to move the reed (3) back and forth. The matched oscillatable system formed by the energy storer and the reed reduces the drive torque at the uniformly rotating drive means whereby a reduction of the power consumption results.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: May 20, 1997
    Assignee: Sulzer Rueti AG
    Inventors: Stefan Ammann, Lorant Gacsay, Alfred Stirnemann
  • Patent number: 5575313
    Abstract: In a multi-phase weaving machine, an apparatus (16) for monitoring warp yarn movement (3a, 3b) in particular leno warp yarns. The drawing-off movement or the drawing-off speed of the warp yarns (3a, 3b) can be detected by an electronic sensor (6a, 6b; 6c) so that it can in particular be determined whether the drawing-off movement or the drawing-off speed has a very low or relatively large value. If the value is very low, in particular when the warp yarn is standing still while the weaving process is running, it can be concluded that the warp yarn has broken. If the value of the drawing-off speed lies above a preset threshold value it can be concluded that the warp yarn is being driven in an undesired manner so that an error signal (13) is produced in order to interrupt the weaving process.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: November 19, 1996
    Assignee: Sulzer Rueti AG
    Inventors: Thomas Weber, Dietmar Markward, Jaques Peulen