Open-end yarn piecer
US4680925A · kind A · utility
3Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1984 |
| Grant date | Jul 21, 1987 |
| Priority date | — |
| Expiry date | May 18, 2004 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H4/50
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The travelling piecer carries a lever to separate the nip rollers, a yarn reserve forming device to receive the yarn and a threading device for threading a broken yarn from a package between the nip rolls and through the yarn reserve forming device. The piecer also has a control which effects a piecing operation in which a clutch is actuated to feed fiber into the spinning unit while yarn is back-fed into the unit from the yarn reserve. At the completion of a predetermined time period (T) the nip rolls are re-engaged to withdraw the re-pieced yarn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.