Tack-in apparatus
US6470917B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Jul 26, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03D47/48
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A tack-in apparatus is provided wherein injection ports are arranged at upper and lower sides of a weft yarn path, respectively. The injection ports inject currents for folding back an end portion of a cut weft yarn into a warp yarn opening on the weft yarn path which the weft yarn passes by a beating operation. Air guides projecting toward the warp yarn opening are formed at circumferential portions of the injection ports between the weft yarn path and the injection ports. The surfaces of the air guides which are on the sides of the injection ports are inclined toward the weft yarn path at front end portions of the air guides. In order to tack in the weft yarn end, the injection air currents are directed to the central portion of the warp yarn opening. This enables the weft yarn end to be transferred reliably, the tack-in operation to be carried out reliably, and the turbulence of the warp yarn to be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.