Corespun yarn friction spinning apparatus and method
US4860530A · kind A · utility
13Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1988 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Dec 22, 2008 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2331/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present friction spinning apparatus includes a draw frame section with an entrance trumpet including first and second fiber sliver guiding passageways for forming a three component corespun yarn. One of the guiding passageways directs a core roving into the draw frame section while the other sliver guiding passageway directs a core wrapper sliver into the draw frame section so that the core wrapper fibers surround the core fibers. Wrapping fibers are then wound about the core and core wrapper fibers in an elongated throat extending between a pair of rotating suction drums.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.