Apparatus for manufacturing a yarn
US4249368A · kind A · utility
Inventor
Key dates
| Filing date | Mar 30, 1979 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Mar 30, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus for manufacturing a yarn comprises two juxtaposed, closely spaced apart vacuum drums, which rotate in the same sense and have vacuum zones that adjoin the triangular space between the drum. A drawing frame delivers a drawn sliver at one end of said drums to said triangular space, in which the sliver is twisted to form a yarn, which is then withdrawn by means provided at the opposite end of the drums. To ensure a uniform quality of the yarn and to enable the yarn to be withdrawn at high speed, at least one additional roller drawing frame is provided, which has a delivery end disposed over the triangular space and can be operated to deliver wrapping fibers in the form of at least one stream of drawn fibers moving transversely to the longitudinal direction of the drums to the sliver, which extends in the longitudinal direction of the drums.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.