Feeding device for advancing undelimbed tree trunks
US3994327A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1975 |
| Grant date | Nov 30, 1976 |
| Priority date | — |
| Expiry date | Mar 4, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27B25/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A feeding device for use with tree processing machines such as delimbing, barking and slashing machines wherein feed rolls are provided on each side of a feed path for the tree trunk. The feed rolls have a conical configuration and are mounted for rotation about axes inclined to each other at an angle equal to the base angle of the rolls. The surfaces of the feed rolls facing towards each other lie parallel and have a greater radial distance to the axis of rotation at the base portion of the feed rolls than at the upper portion thereof. This arrangement establishes a greater feeding force at the upper portion of the feed rolls than at the base portion and a circumferential speed for the feed rolls which is highest at the base portion and lowest at the upper portion thereby enabling tree trunks having relatively smaller diameters to be advanced through the rolls at relatively higher speeds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.