Carding engines
US4128917A · kind A · utility
12Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1977 |
| Grant date | Dec 12, 1978 |
| Priority date | — |
| Expiry date | Apr 29, 1997 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD01G21/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a duo-card engine, a novel arrangement of crush rolls and toothed roller are used to break up the fibre web into individual fibres and fibre groups to free them from dirt, after which the fibres are reassembled on the surface of a perforated vacuum cage adjacent to and downstream of the toothed roller. This sequence of operations produces a yarn, not only of more regular texture but yarn in which the amount of trash, dust and small fibres can be reduced substantially by one half.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.