Device for twisting yarns which are wound under cake package form
US4157006A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1978 |
| Grant date | Jun 5, 1979 |
| Priority date | — |
| Expiry date | Feb 28, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01H1/003
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a device for up-twisting directly a spinning package having the shape of the cake. According to the invention, the device comprises a vertical spindle driven in rotation at constant or variable speed. Centering and positioning means are provided for the cake on the spindle, said means preferably comprising two cones placed in opposition and fitted at each extremity of the cake. The cones are characterized by the lower cone being secured to the spindle axle and the package being positioned between the two cones by means of a locking element which connects the lower cone to the upper cone. Preferably, the upper cone is associated with a cap flyer which projects beyond the outer edge of the package. The invention applies itself particularly well to up-twisting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.