Forage harvester knife and mounting apparatus

Details Forage harvester knife and mounting apparatus Forage harvester knife and mounting apparatus

1997-01-16

1998-07-14

Rosenbaum, Mark

Solid material comminution or disintegration

Apparatus

Cooperating comminuting surfaces

241294, B02C 1818

Patent

active

057791678

ABSTRACT:
A rotatable forage harvester cutterhead having a shaft with a drum assembly coaxially secured to the shaft. A plurality of uniquely configured knives extend from the outer cylindrical surface of the drum, each with a cutting edge length less than half the axial length of the cylindrical surface. The knives are supported by assemblies having a solid mounting block secured to the outer cylindrical surface, which mounting blocks have a mounting surface extending at an acute angle to a radial plane extending from the shaft. Fasteners secure the knives to the mounting surfaces with the cutting edges of the knives extending in the direction of rotation of the cutterhead and generating a cylinder as the cutterhead rotates. The knife designs enhance efficiencies by providing a rake angle, formed by the bottom surface of the knife and the radial plane, that is greater than the acute angle.

REFERENCES:
patent: 3357467 (1967-12-01), Morkoski
patent: 3378053 (1968-04-01), Potzsch
patent: 3873038 (1975-03-01), Wagstaff
patent: 3958766 (1976-05-01), Shriver
patent: 4061284 (1977-12-01), Raisbeck et al.
patent: 4189875 (1980-02-01), Flenniken
patent: 4209137 (1980-06-01), McAllister et al.
patent: 4257566 (1981-03-01), Lawrence

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