Reed pieces with recessed weft guide openings having inclined surfaces
US5323814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1992 |
| Grant date | Jun 28, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03J1/002
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A weft insertion device for a jet loom prevents weft the distal or leading end of the weft from being ejected from the weft passage before reaching the exit end of the passage in the reed, while improving the flying speed of a weft. The weft insertion device has a reed provided with a plurality of reed pieces (3A, 3B, 9A, 9B) having guide openings (4, 5, 14, 15) recessed in the front faces thereof. The wall portion of each guide opening of the reed has at least one wall surface (4b, 5b, 14e, 14g, 15e) provided to guide air flowing through a weft passage (S). The inclination angle of the wall surfaces (4b, 14e, 14g), provided at the wall portions of the guide openings of those reed pieces (3A, 9A) which are arranged in a first section (L1), located closer to a main nozzle, suppresses air leakage toward the opening side of the weft passage. The inclination angle of the wall surfaces (5 b, 15e), provided at the wall portions of the guide openings of those (3B, 9B) of the line of the reed pieces which are arranged in a second section (L2) located opposite to the main nozzle, is set to collect air in the center of the weft passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.