Method and means of conveyance of solid matter in pieces or part

Details Method and means of conveyance of solid matter in pieces or part Method and means of conveyance of solid matter in pieces or part

1990-06-28

1991-11-12

Bray, W. Donald

Woodworking

Process

Timber harvesting or processing

144208B, 144242, 144246R, 198750, B27L 100, B65G 2500

Patent

active

050639811

ABSTRACT:
Method and means of conveyance for solid material, f.ex. tree trunks (6) or bark, whereby the solid material is conveyed with parallel, oblong transfer elements (4) moving back and forth in transfer direction. A larger part of the surface of the transfer elements (4) is moving forward at a time than moving backward. The speed of the return motion of the transfer elements is higher than that of the feed motion of the transfer elements. Transfer elements (4) at sides of the conveyor have been inclined on their longitudinal axis so that they slope towards the center of the conveyor. In this way the friction force between the particles (6) of the material to be conveyed is increased and the friction force between the material (6) to be conveyed and the transfer elements (4) is decreased.

REFERENCES:
patent: 2214755 (1940-09-01), Tafel
patent: 2248841 (1941-07-01), Anderson
patent: 4180109 (1979-12-01), Heikkinen
patent: 4374533 (1983-02-01), Svensson
patent: 4709805 (1987-12-01), Foster
patent: 4784198 (1988-11-01), Pallmann

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