US 4,890,649 A · Faulty pick removal for a multiple-phase loom

Abstract

An operation control method of a multiple-phase loom arranged to weave a plurality of fabrics by simultaneously picking weft yarns respectively to a plurality of warp yarn arrays. In this loom operation control method, first the loom is stopped in case mispick is caused in any of the warp yarn arrays. Then, a mispicked weft yarn and a weft yarn normally picked simultaneously with the mispicked weft yarn are removed automatically. Thereafter, detection is made as to whether the mispicked weft yarn and the normally picked weft yarn are present or not in a weft picking channel. Finally, the loom is restarted upon detecting absence of the mispicked weft yarn and the normally picked weft yarn. Accordingly, the loom restart is carried out after completion of removal of the mispicked weft yarn and the like, thereby achieving effective loom operation without operational troubles, thus preventing weaving defects such as heavy filling bar in a woven fabric.

Claims8

Dependent claims

An operation control method of a loom of a type wherein a plurality of fabrics are woven by simultaneously picking weft yarns respectively to a plurality of warp yarn arrays, said method comprising the following steps in the order named:

stopping the loom in case a mispick is made in any of the warp yarn arrays;
removing a mispicked weft yarn in the warp yarn array and a weft yarn which is normally picked in another warp yarn array simultaneously with said mispicked weft yarn;
detecting an absence of said mispicked weft yarn and said normally picked weft yarn respectively at predetermined positions;
and
restarting the loom upon detecting the absence of said mispicked weft yarn and said normally picked weft yarn.

2 more elements

Dependencies are inferred from the claim text.

Faulty pick removal for a multiple-phase loom

Life of this patent

Faulty pick removal for a multiple-phase loom

Life of this patent

Abstract

Claims8