Device for chopping straw

Details Device for chopping straw Device for chopping straw

1988-10-28

1991-03-12

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

2412921, B02C 1818

Patent

active

049986791

ABSTRACT:
A device for chopping straw of the type which comprises a rotor arranged in an apparatus housing, said rotor having a plurality of knife arms detachably attached thereto and which when rotated pass between a number of counter-knives attached to a knife beam. The knife arms and counter-knives comprises flat bars provided with at least one sharpened edge on one of its long sides. The knife arms are arranged to act as fan blades guiding the air stream with chopped straw exiting from the apparatus housing, by the fact that each knife arm has said at least one edge bevelled in a respective oblique sharpening plane extending substantially throughout the thickness of respective knife arm. A desired spreading direction and spreading width of the chopped straw is obtained by arranging the detachable knife arms with their sharpening planes in different configurations with respect to each other.

REFERENCES:
patent: 3380502 (1968-04-01), Gronberg
patent: 3874604 (1975-04-01), Gronberg et al.
patent: 4403743 (1983-09-01), Ducasse

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