Picanol, N.v.

Picanol N.v. Naamloze Vennootschap

Philippe Van Bogaert

Frank Ampe

Jozef Verhulst

Hugo Markey

Jean-Marie Bamelis

Dirk Maes

Henry Shaw

Jozef Peeters

Denis Moeneclaey

Geert Ostyn

Serge Vanrobaeys

Remi Lagache

Marnick Cardoen

Bernard Decock

Johan Pannekoucke

Andre Vandenbroucke

Filip Deconinck

Marc Wyffels

Marcel Denoo

Willy Dejonckheere

Luc Weymeels

Patrick Nuytten

Gilbert Dejonghe

Jozef Trioen

Ampe Frank

Rik Hillaert

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.

Device for attaching a shaft in a frame

A device for supplying weft threads in airjet weaving machines includes at least one nozzle connected to a compressed air source, a buffer tank, a cutoff valve placed in a funnel between the compressed air source and the nozzle, and a controlled throttling device. The throttling device is mounted downstream from the buffer tank and in the immediate surroundings of the cutoff valve, and includes the funnel, a rotary throttling element, and a motor for rotating the throttling element. The funnel is divided into an inlet funnel and an outlet funnel connected to the inlet funnel. The rotary throttling element fits within the inlet funnel and rotates to selectively block an entry to the outlet funnel according to the degree of rotation of the throttling device.

Weft thread supplying device with rotary throttle valve in airjet

A mechanism for mounting a part on the sley of a weaving machine includes a holder in which a relay nozzle of the weaving machine is mounted, a groove extending over the length of the sley, a clamp to be mounted in the groove and having on opposite sides two mutually inclined gripping faces; and screws which fit through openings in the holder and which act on the clamp to cause the clamp to draw the holder against the sley as the screws are tightened, thereby producing a gripping force in both gripping faces. The holder, when mounted, is clamped on at least one side between a corresponding gripping face of the clamp and a lateral side of the groove.

Mechanism for mounting a part on a loom sley

A mechanism for presenting weft threads on rapier weaving machines includes a cam mechanism, cam follower devices, armatures connected to the cam follower devices, and thread presentation arms. The cam mechanism and cam follower devices impart reciprocating movements to the armatures such that, alternately, for each successive weaving cycle, the armature connected to one of the cam follower devices cause the movement of one of the thread presentation arms into a presented position, while the armatures connected to the other cam follower device move back to a rest position a thread presentation arm which has just been presented.

Weft mixer

Apparatus for adjusting the length of the weft thread to be inserted into the shed of weaving looms that provides an automatic correction of the weft thread length during each weaving cycle of the weaving process by adding to or subtracting a variable amount of weft thread from the accumulated length of weft thread prior to insertion of the thread into the shed.

Apparatus for adjusting weft thread lengths by changing the length of

A method for regulating the supply of weft thread on weaving machines includes the steps of winding the weft thread from a thread supply by means of a draw-off roller driven by a motor, supplying the thread to an accumulator, and controlling the draw-off roller motor by a pulse train generated on the basis of a set value and a second pulse train whose frequency is proportional to the main shaft of the weaving machine. By adjusting the set value, the speed of the draw-off roller can be adjusted to account for such factors as thread type, thickness extensibility and diameter, and also thread supply package diameter and variations in thread draw-off speed. A device for implementing the method of the invention includes, in a preferred embodiment, a cam, a set value setting unit, a shaft pulse generator for generating the second pulse train, a buffer, and a counter which adds the set value and the second pulse train to generate the first pulse train.

Method for regulating the supply of weft thread on weaving machines, and

A thread clip including a clamping mechanism (1) consisting of a first jaw (2) and a second jaw (3); a spring mechanism (4) which presses the clamping mechanism jaws (1) together; an electromagnetic device (5) which can open the clamping mechanism against the force of the above-mentioned spring mechanism (4); a cam mechanism (6) which can close the clamping mechanism (1) against the force of the electromagnetic device (5); and a mechanism (7) which on closing of the clamping mechanism (1) by means of the cam mechanism (6) presses the different elements of the clamping mechanism (1) against each other with a certain clamping force.

Thread clip

Method and apparatus for adjusting the length of the weft thread to be inserted into the shed of weaving looms that provides an automatic correction of the weft thread length during each weaving cycle of the weaving process by adding to or substracting a variable amount of weft thread from the accumulated length of weft thread prior to insertion of the thread into the shed.

Method for adjusting the length of the weft thread to be inserted into

A drive system for weaving machines includes normally coupled main and auxiliary drive shafts for at least the batten and heddles of the weaving machine, respectively, with the shafts driven by main and auxiliary drive motors at different speeds through appropriate speed reducers and couplings. The shafts are coupled together at one point by an adjustable coupling that is controllable remotely so as to permit fine adjustment between the relative angular positions of the main and auxiliary drive shafts and therefore between the batten and heddle positions. This system has particular application during weaving machine start-up after a weaving interruption; e.g., when a thread break occurs. Various embodiments are described.

Transmission for weaving looms

Device for forming a selvedge or selvedges on woven cloth, consisting essentially of two arms (1, 2) whose ends move to-and-fro in opposite directions, where the first arm (1) has at its end (3) a rotatable thread guide block (5) for the crossing thread or threads, and where the second arm (2) has at least one needle-shaped thread guide (6, 6A, 6B) for the needle thread or threads (27, 27A, 27B) so that the needle thread or threads can be moved up and down in front of the rotatable thread guide block (5) as a result of the motion of the arms (1, 2).

Device for forming a selvedge or selvedges on woven cloth

A weft thread is inserted in a fluid jet loom by accelerating the weft thread to its insertion speed before the thread reaches the outlet of the main blower nozzle. The thread is accelerated to its insertion speed, for example, by an auxiliary nozzle upstream of the main blowing nozzle of the loom. Multiple weft threads may be inserted in a fluid jet loom by feeding each weft thread from a different supply source to individual weft thread supply channels and thereafter placing selected supply channels in communication with a through channel in a movable conduit block that selectively establishes communication between a single weft thread supply channel and the main blower nozzle. The conduit block can be mounted for various different movements to effect weft thread communication with the main blower.

Device for supplying a weft thread to a main blower of an air jet

A weft accumulating method and assembly of a weaving loom for accumulating a lenght of weft thread to be inserted into a shed by a pick insertion assembly of the loom in which the accumulator comprises a weft supply; includes a drawing off device off a predetermined length of weft thread from the supply; at least one perforated cylindrical tube; a fluid blowing device to blow the drawn off weft through the tube; and a clamping device to open and close the end of the tube to accumulate weft thread in the tube when the device is closed and to supply the weft thread to the pick insertion assembly when the device is open.

Weft accumulating method and assembly for weaving machines

A device for the insertion of weft thread into a shed of air insertion looms primarily consists of the combination of a main nozzle, and of at least one auxiliary nozzle fixedly mounted before the main nozzle, the latter having an adjustable flow-through aperture for regulating the jet insertion medium. Associated with each auxiliary nozzle, a control means is utilized for the adjustment of the flow-through aperture. Various embodiments of aperture control are described.

Device for the insertion of weft threads into the shed of air-looms and

An auxiliary nozzle for an air jet loom is configured as straight tubule closed and tapered blade-like at its free end and moveable with the loom batten into and out of the formed sheds. At least one blow aperture near the closed end of the tubule is provided in the shape of a slot extending essentially transverse to the tubule axis. The slot has a width not exceeding 0.8 mm and lateral walls configured so that the least or critical cross-section is bounded at least on one side by an edge having a thickness not exceeding 0.2 mm. If one edge is provided, it is located on the lower side of the slot toward the air supply and away from the closed end of the tubule. Various aperture configurations are disclosed.

Auxiliary nozzle for air jet loom

Process for unwinding a thread from a reel in looms, wherein the thread (6) is guided through a thread guide (4) placed behind the reel, characterized thereby that the distance (L) between said thread guide (4) and said reel (3) is adjusted automatically mainly during the weaving process.

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Schaarbeek, Belgium

Philippe Van Bogaert