Tuck-in needle and a pneumatic selvedge-forming device for a loom
US4984608A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | Jan 15, 1991 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD03D47/48
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A selvedge-forming device has a tuck-in needle having, at least in the end part introducible into the shed, a wedge shaped cross-section. The needle also has an elongate yarn entry aperture whose major dimension extends in the direction of the length of the end part of the needle. The end part also has an end face which leads in the direction of entry into the shed and which co-operates with the long side near the reed to form a tip pointing away from the shed apex. The needle can make pivoting movements out of the shed very close to the shed apex so that the weft yarn end is tucked in correspondingly close to the shed apex. Because of the elongate shape of the aperture the weft yarn end can be bent readily and can therefore be threaded into the aperture with a reduced blowing pressure of a threading nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.