Wood pulper with constant wood feed
US4222531A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1979 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Jan 31, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21B1/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a wood pulper of the kind in which wood is fed via a hopper having advancing elements arranged on two opposite sides by which wood is advanced to a grinding stone. The invention is characterized in that said advancing elements comprise a plurality of driven shafts which are arranged parallel to and adjacent each other substantially transverse to the feed direction, said shafts being equipped with a plurality of toothed discs lying adjacent to each other. This arrangement enables the driving force to be distributed over a plurality of feed shafts, so that a continuous compression can be obtained which increases as the wood feeds through the hopper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.