Straw-shredding knife and rotary knife assembly

Details Straw-shredding knife and rotary knife assembly Straw-shredding knife and rotary knife assembly

1988-03-04

1989-07-04

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Combined or convertible

241294, B02C 1818

Patent

active

048443530

ABSTRACT:
There is disclosed a rotary knife assembly for shredding straw. It includes a non-cylindrical driving shaft and a plurality of like knifing devices mounted in succession along the shaft, each device having a pair of generally flat shredding parts. Each such part comprises a central portion having a straight edge and radial teeth projecting from the central portion, the latter further having a notch located centrally of the straight edge, notch configured to seat radially over half of the shaft. The central portion also has a boss on one face forming an arcuate shoulder around the notch. The shredding parts of each device are held in coplanar position, when the straight edges meet, by a tube of which one end closely surrounds the shoulders of the bosses, which shoulders extend along a common circle. The same end of the tube abuts one face of the parts thus holding the parts in coplanar position and preventing them from separating along their straight edges. The other end of the tube abuts one face of the shredding parts of an adjacent knifing device.

REFERENCES:
patent: 1477848 (1923-12-01), Pardee
patent: 3151645 (1964-10-01), Hesse
patent: 3570566 (1971-03-01), McCreery
patent: 4457058 (1984-07-01), Binder et al.
patent: 4724662 (1988-02-01), Giandenoto et al.
Advertising brochure (undated) entitled WIC Bedding-Chopper.

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