Device for twisting a yarn by means of a double twist device
US4315397A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1980 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Apr 29, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/106
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A double twist spindle comprising a shaft adapted to be rotatably driven, the shaft having a first end to be supported on a machine frame, a package carrying assembly rotatably mounted at the opposed end of the shaft for rotation independently of the shaft, the assembly including a base for supporting an end of a bobbin, a hollow axle co-axial with the shaft, and a magnet for retaining the assembly against rotation with the shaft, and a bowl element fixed to the second end portion of the shaft for rotation with the shaft. The bowl element comprises a hollow bowl which is co-axial with the shaft, which extends around the package carrying assembly, and which has a conduit defining a yarn passage with a yarn outlet. The hollow bowl has a first part which is of truncated conical shape in the region of the yarn outlet, the first part having a gradual slope, and has a further part which extends from the diverging end of the first part, the first part having a concave bell mouthed configuration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.