Abstract

A hook (5) for a tufting machine to provide an enhanced J-cut effect. The hook comprises a shank portion (12) via which the hook is connected to the tufting machine, in use, and a working portion (4) extending from the shank portion. The working portion (4) comprises a cutting edge (6) on one side of a lower face of the working portion. A J-cut forming portion is formed at the working portion (4), in that the working portion in the region above the cutting edge has a greater thickness than the thickness of the shank portion (12).

IPC Classes  ?

• D05C 15/24 - Loop cuttersDriving mechanisms therefor

Abstract

A tufting machine (1) and method for operating a tufting machine operating a needle selection mechanism based on pattern data by selecting a needle (10) with yarn (4) required for the pattern such that the selected needle is driven by a needle bar (11) through the backing medium (7), to form a tuft while a needle that is not required for the pattern is not selected by the needle selection mechanism. Yarn is fed via a yarn feed mechanism (2) comprising a plurality of actively driven yarn drives each driving a respective yarn to a respective needle, the yarn drives being at a location between a yarn creel and the needle. The method being characterised by operating the yarn feed mechanism (2) to deliver at least 70% of the yarn required for a tuft as the needle (11) moves from top dead centre to bottom dead centre.

IPC Classes  ?

• D05C 15/18 - Thread feeding or tensioning arrangements
• D05C 15/20 - Arrangements or devices, e.g. needles, for inserting loopsDriving mechanisms therefor
• D05C 15/30 - Tufting machines with provision for producing patterns by moving the tufting tools laterally

Abstract

A pattern data processing system configured to determine and compensate for any points of entanglement between different yarns. A point of entanglement is defined as a point where the yarn from one needle crosses and traps the yarn from another needle on the back face of the backing medium. The pattern data processing system is configured to calculate the additional length of back stich caused by each point of entanglement by subtracting an ideal back stich length, calculated as the path which would have been taken by the yarn had it not been entangled in another yarn, from an actual yarn path, calculated as the actual length of the entangled yarn. A controller is configured to include in the amount of yarn fed by a respective yarn feed mechanism for each stitch an amount equivalent to the additional length of back stitch. The invention also includes a tufting machine and method of operating the tufting machine with the pattern data processing system.

IPC Classes  ?

• D05C 15/18 - Thread feeding or tensioning arrangements
• D05C 15/30 - Tufting machines with provision for producing patterns by moving the tufting tools laterally
• D05C 15/34 - Tufting machines with provision for producing patterns by inserting loops of different nature or colour

Goods & Services

Tufting machines and parts and fittings specially adapted for tufting machines included in Class 7

Abstract

2) can exert a magnetic force on the zone (50), and in which the zone (50) extends over a distance (Z) that is shorter than the coil length (S), while the holding distance (A) is at least equal to half the positionable length (L) of the selection element.

IPC Classes  ?

• D03C 9/06 - Heald frames
• D03C 13/00 - Shedding mechanisms not otherwise provided for

Abstract

The present invention relates to a selection device for a shed-forming device of a weaving machine having an electromagnetic selector (11) with at least two poles (P1), (P2),.... (Pn) and a selection element (1), (2); (25), (26); (40), (41) which is located in a cooperating position with a zone (50) alongside at least two poles (P1), (P2),... (Pn) and is retained at a holding distance (A) from this zone (50), in which the selector (11) with each adjacent pole (P1), (P2) can exert a magnetic force on the zone (50), and in which the zone (50) extends over a distance (Z) that is shorter than the coil length (S), while the holding distance (A) is at least equal to half the positionable length (L) of the selection element.

IPC Classes  ?

• D03C 3/20 - Electrically-operated jacquards
• D03C 3/24 - Features common to jacquards of different types

Abstract

The present invention relates, on the one hand, to a method for weaving pile fabrics with at least two different pile heights (a, b) in the same pile row, wherein the fabrics comprise weft threads, ground warp threads and pile- warp threads (1, 2), wherein these pile-warp threads are interlaced in the fabric, according to a pattern, in a figure- forming manner or are inwoven in a non-fϊgure-forming manner, and which, when they are figure-forming, form pile with a well-defined pile height. On the other hand, the present invention relates to a device for manufacturing such fabrics.

IPC Classes  ?

• D03D 27/06 - Warp pile fabrics
• D03D 39/16 - Double-plush looms, i.e. for weaving two pile fabrics face-to-face
• D03D 39/18 - Separating the two plush layers, e.g. by cutting
• D03D 39/20 - Looms forming pile over warpwise wires
• D03D 39/24 - Devices for cutting the pile on the loom
• D03D 49/04 - Control of the tension in warp or cloth
• D03D 39/00 - Pile-fabric looms

Abstract

On the one hand, the invention relates to a heddle for a weaving machine, comprising a heddle eye part and at least one wire part, wherein at least one extremity of the heddle eye part is provided with a bore extending along the longitudinal axis of the heddle; at least one extremity of the wire part is provided with a part which is reduced in the radial direction which is provided to be inserted into the said bore; the transitional zone between the external circumference of the heddle eye part and the external circumference of the wire part is progressing smoothly. On the other hand, the invention relates to a weaving machine provided with one or more of such heddles and finally a method for manufacturing such a heddle.

IPC Classes  ?

• D03C 9/02 - Healds