Patents Assigned to PICANOL
  • Patent number: 5313988
    Abstract: A method for driving a weaving machine during slow motion includes the steps of carrying out the slow motion drive using the main drive motor, and controlling excitation of the main drive motor as a function of the load on the weaving machine parts which has been predetermined and stored in a memory as a function of weaving machine part positions. The required speed of the weaving machine parts to be driven may also be taken into account in controlling the main drive motor. A device for carrying out the method includes the main drive motor, a power phase controller for the main drive motor, detectors for detecting the positions of the weaving machine parts, and a comparator for comparing the positions with stored positions in order to take into account the load data which has been entered.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: May 24, 1994
    Assignee: Picanol N.V., naamloze venootschap
    Inventors: Walter Bilcke, Ludo Faes, Chris Noppe
  • Patent number: 5307844
    Abstract: A two-part weaving machine includes a stationary machine-frame part containing at least a takeup for winding woven material, and a removable machine-frame part containing at least the bearing for a warp beam. The two machine-frame parts include mutually engaging guides which define a path for constraining the relative motion of the two parts during initial removal of the removable part from the stationary part, and during final re-assembly of the removable part to the stationary part, thus permitting fitting of the two parts together in a compact arrangement without unintentional contact between the respective mechanisms carried by the two parts, and enabling the removal and final re-assembly to be carried out using simple vertical and horizontal movements of the conveyance device.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: May 3, 1994
    Assignee: Picanol N.V.
    Inventor: Marc Gruwez
  • Patent number: 5307845
    Abstract: A split loom with a stationary loom part and a removable loom part includes selvage-formers mounted in the removable loom part, at least one selvage-former being driven by a shaft entering the loom and also mounted on the removable loom part, the shaft being connectable by a separable clutch to a drive shaft mounted on the stationary loom part.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: May 3, 1994
    Assignee: Picanol N.V.
    Inventors: Serge Vanrobaeys, Kurt Slosse, Patrick Glorie
  • Patent number: 5293908
    Abstract: An apparatus for adjustably affixing a support bracket to a part of a machine frame includes an adjustment screw to adjust the height of the support bracket on the frame and a pair of oppositely movable clamp elements having oblique surfaces for wedging the support bracket in place following adjustment. Wedging is accomplished by turning a setting screw to move the clamp elements in mutually opposite directions. The setting screw is parallel to the adjustment screw, allowing equal access to both the adjustment and setting screws.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: March 15, 1994
    Assignee: Picanol, N.V.
    Inventors: Bart Lefever, Roland Dewachter
  • Patent number: 5273230
    Abstract: A device for attaching a shaft in a frame includes at least two supports for carrying the ends of the shaft, a support lock which keeps the shaft on its support while permitting the shaft to turn locally, and a hinged locking mechanism for closing and opening the lock. The lock is opened and closed automatically by the hinged locking mechanism, which causes the lock to open against a biasing force in response to insertion of the shaft.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: December 28, 1993
    Assignee: Picanol N.V., naamloze vennootschap
    Inventors: Henry Shaw, Philippe Van Bogaert, Marcel Denoo, Johan Pannekoucke, Geert Ostyn
  • Patent number: 5273079
    Abstract: A weaving method makes use of a set of weaving frames arranged such that, in each weaving cycle, some of the weaving frames are held in an identical extreme position, while all remaining weaving frames are moved in order to provide different tensions for the top and bottom warp threads at the moment of beating up. The shed is formed so that at the moment of crossing, as the weaving frames change position, the length of the course followed by the crossing warp threads is equal or almost equal to the length of the course followed by the warp threads held in the extreme position.
    Type: Grant
    Filed: September 22, 1992
    Date of Patent: December 28, 1993
    Assignee: Picanol N.V., naamloze vennootschap
    Inventors: Daniel Beyaert, Ignace Meyns, Henry Shaw
  • Patent number: 5249606
    Abstract: A method for isolating a yarn end of a broken warp thread from the warp in a weaving machine, the weaving machine being provided with a warp stop motion of the type wherein drop wires have been hung up on the warp threads for detecting that a warp thread has broken, includes the steps of first putting a yarn end of the broken warp thread in a correct position relative to the warp and subsequently removing the warp end from the warp. An apparatus for carrying out the method includes a clamp located on one side of the stop motion, a carrying element for tensioning the thread by hooking it and carrying it between the drop wires in a direction transverse to the warp direction, and a device located on a second side of the stop motion for removing the thread.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: October 5, 1993
    Assignee: Picanol N.V., naamloze vennootschap
    Inventors: Bernard Vancayzeele, Dirk Gryson
  • Patent number: 5226458
    Abstract: A device for stretching a weft thread in weaving machines includes a stretching nozzle mounted on the sley of the weaving machine and a blower device for removing weft threads from the stretching nozzle. The blower device is mounted on the sley near the stretching nozzle.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: July 13, 1993
    Assignee: Picanol N.V., Naamloze Venootschap
    Inventor: Jean-Marie Bamelis
  • Patent number: 5226459
    Abstract: A thread brake includes a plurality of fixed thread guide elements, at least two movable thread guide elements mounted on a rotatable body which, through rotation, can be brought in opposite directions to cross a path of a thread being guided by the fixed thread guide elements and thereby engage the thread such that the thread is bent in two places, thereby braking the thread. Rotation of the movable thread guide elements may be restricted during braking by taps appropriately positioned.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: July 13, 1993
    Assignee: Picanol N.V. naamloze venootschap
    Inventors: Ignace De Ro, Hugo Markey
  • Patent number: 5224518
    Abstract: A device for attaching an element in a frame includes a seating, a supply path via which the element to be attached is brought to the seating, and a pivotable member. In a first position of the pivotable member, a first end thereof is situated in the supply path. In a second position, the first end is situated outside the supply path and a second end of the pivotable member to move the pivotable member between its first and second positions. The first position of the pivotable element is an overcenter position in which the relative positions of the pivotable member's pivot point, the seated element, and the point of contact between the seated element and the first end of the pivotable member are arranged to retain the seated element in place within the seating. In the second position of the pivotable member, the transport device moves the element via the supply path into and out of position in the seating.
    Type: Grant
    Filed: December 17, 1991
    Date of Patent: July 6, 1993
    Assignee: Picanol N.V., naamloze vennootschap
    Inventors: Bart Lefever, Geert Ostyn
  • Patent number: 5220945
    Abstract: Supporting device for the back rest in a weaving machine, characterized in that it mainly consists of a first element (13) which can move in relation to a frame (14) and a second element (15) upon which the back rest (3) has been mounted, whereby this second element (15) is attached to the first element (13) in a hingeable manner on the one hand, and is being supported by elastic element (17) on the other hand.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: June 22, 1993
    Assignee: Picanol N.V., Naamloze Vennotschap
    Inventors: Michel Vandeweghe, Bart Lefever
  • Patent number: 5197520
    Abstract: An airjet loom is cleaned by periodically passing a cleaning fluid through the airjet nozzles. For this purpose, the solenoid valves each include an additional hook-up by means of which the airjet nozzles can communicate with a source of cleaning liquid.
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: March 30, 1993
    Assignee: Picanol, n.v.
    Inventor: Heinz Reimertz
  • Patent number: 5183084
    Abstract: The rapier guide of a gripper weaving machine includes at least two series of guide elements for guiding the rapiers in the shed. The two series are presented in the shed at the backmost position of the sley to guide the rapiers on both sides thereof. In the series of guide elements which is situated closest to the reed, those guide elements situated nearest the ends of the shed are arranged to also be situated, in all positions of the sley, essentially underneath the plane formed by the undersides of the rapiers.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: February 2, 1993
    Assignee: Picanol N.V., naamloze vennootschap
    Inventor: Moeneclaey, Denis
  • Patent number: 5146954
    Abstract: A method and a device for replacing a cloth beam in a weaving machine utilize the steps of removing a cloth beam from a winding device, pressing an empty cloth beam against a fabric and against a guide piece such that the fabric is turned over the guide piece, subsequently releasing the fabric, and driving the empty cloth beam such that the fabric is wound thereon, and finally mounting the empty cloth beam in the winding device.
    Type: Grant
    Filed: June 13, 1991
    Date of Patent: September 15, 1992
    Assignee: Picanol N.V., Naamloze vennootschap
    Inventors: Geert Ostyn, Kristof Roelstraete
  • Patent number: 5137059
    Abstract: A method for supplying weft yarn to the shed of a weaving machine of the type in which weft yarn is inserted into the shed from at least two feed bobbins, via respective weft accumulators and insertion devices, includes the step of altering the average yarn extraction speed at which the weft yarn of at least one of the feed bobbins is extracted during unspooling of the bobbin in order to prevent yarn breakage due to an excessively high extraction speed. The method may be carried out by a device which generates a signal representative of the available supply of yarn on a feed bobbin, and controls the yarn extraction speed as a function of the available supply signal. An alternative device for carrying out the method generates a signal representative of a yarn extraction tension and regulates the yarn extraction speed as a fuction of the yarn extraction tension signal.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: August 11, 1992
    Assignee: Picanol N.V., naamloze vennotschap
    Inventors: Robert Baeck, Henry Shaw, Jose Vangheluwe
  • Patent number: 5131437
    Abstract: A device for retrieving the end of yarn wound on a yarn-feed spool includes a system for blowing an essentially tangentially directed current of air over a rotating yarn-feed spool so that an end of the yarn wound on the yarn-feed spool can be freed from the spool. A suction nozzle is provided to capture and draw into the nozzle the end of the yarn blown free from the spool. A movable carriage system carrying at least the air current generating means and the suction nozzle is provided so that a yarn-feed spool can be approached, exposed to the air current and the freed yarn end captured by the suction nozzle. The mobile system may also carry a device for engaging the driving the yarn-feed spool in rotation. A conveyor system for moving the retrieving system over a weaving machine is also described.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: July 21, 1992
    Assignee: Picanol N.V., naamloze vennootschap
    Inventors: Henry Shaw, Roger Ligneel
  • Patent number: 5111852
    Abstract: A blow device for weft threads in weaving machines, in particular a blow device which makes use of a nozzle of the type which consists of a housing, a thread guide duct extending through the housing and a first or main blower situated in the housing and working with the thread guide duct to transport a weft thread to the shed of the weaving machine. The nozzle has a second or threading blower also situated in the housing that cooperates with the thread guide duct for threading the nozzle. The second blower has at least one blow duct which intersects the thread guide duct at an angle so as to thrust a weft thread presented at the entry of the thread guide duct through the thread guide duct when supplied with air. A central system deactivates the main blower when the threading blower is activated.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: May 12, 1992
    Assignee: Picanol N.V.
    Inventor: Jozef Verhulst
  • Patent number: 5107905
    Abstract: A device for supplying weft threads in a weaving machine includes a bobbin support over which it is possible to slip a bobbin, a thread guide duct extending axially through the bobbin support and which includes an opening at the top for permitting entry of a yarn end into the thread guide duct, a blower for providing an airstram in the thread guide duct, the airstream flowing towards the top of the bobbin support, a prewinder, and a suction and blower device mounted at an entry of the prewinder. The blower and the suction and blower device are simultaneously switched on to create an airstream between the thread guide duct and the prewinder to carry the yarn end situated in the thread guide duct to the prewinder.
    Type: Grant
    Filed: October 4, 1990
    Date of Patent: April 28, 1992
    Assignee: Picanol N.V., naamloze vennootschap
    Inventors: Henry Shaw, Roger Ligneel
  • Patent number: 5101864
    Abstract: A weaving machine including a device for stretching a fabric in the weaving machine includes a guide bar over which the fabric is bent to thereby bring a surface of the fabric into contact with the guide bar. An array of notches on each end of the guide bar is provided to exert an outward traction on the fabric edges to maintain the fabric in stretched condition. To enable a fabric whose width is narrower than a full weaving width to be located along the guide bar in a non-symmetrical manner while effecting a lateral traction force on the edges of the fabric; the guide bar is provided with at least one array of notches located at one end of the bar arranged so that each notch in the array is broken so as to extend circumferentially less than the full circumference of the guide bar, with the array including a plurality of notches longitudinally and circumferentially spaced along the guide bar.
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: April 7, 1992
    Assignee: Picanol N.V. naamloze vennootschap
    Inventor: Henry Shaw
  • Patent number: 5092371
    Abstract: A support system for a temple arranged to hold and stretch the edge of woven fabric in a weaving machine wherein the temple includes a plurality of guide rings and an end guide ring located approximately at the edge area of the woven fabric. The support system includes an end support for rotatably holding the temple above the edge area of the woven fabric and which is integrated with an intersects the end guide ring of the temple from above the temple. A second support for supporting the temple from above is located spaced away from the end guide ring and includes a clamp for restraining the temple against rotation relative to the end support. The location of the end support relative to end guide ring leaves the fabric edge free from mechanical interference with the temple support.
    Type: Grant
    Filed: November 27, 1990
    Date of Patent: March 3, 1992
    Assignee: Picanol N.V.
    Inventor: Etienne Vandeputte