Disc reel mower and method and means of manufacturing the same

Details Disc reel mower and method and means of manufacturing the same Disc reel mower and method and means of manufacturing the same

1980-04-14

1981-05-19

Hafer, Robert A.

Harvesters

Cutting

Cutter members

56249, A01D 5520

Patent

active

042676908

ABSTRACT:
An improved mowing machine of the type which includes a bed knife, a cylindrical rotary knife which, in turn, comprises a plurality of generally elliptical discs mounted parallel to each other on a shaft, and means for rotating the cylindrical knife construction in peripheral contact with the bed knife, the improvement comprising ears formed on the discs extending oppositely outwardly from the plane of the discs at the respective ends of the major axes of the respective elliptical discs, the discs have formed therein a rectangular aperture which fits around a square shaft such that when the aperture rests against the shaft the discs are parallel to each other at an angle of 30 to 50 degrees, and further comprising supporting bars extending outwardly along the major axes of the discs and wherein the discs are specially constructed having a relatively unhardened center section and hardened surface sections on the respective planar surfaces of the discs such that the disc knives are self-sharpening is disclosed. A continuous abrading belt means and method for manufacturing the cylindrical knife constructions are also disclosed.

REFERENCES:
patent: 2640309 (1953-06-01), Benson
patent: 2772533 (1956-12-01), Shibley
patent: 2790293 (1957-04-01), Crotty
patent: 3054247 (1962-09-01), Roesler
patent: 3514934 (1970-06-01), Cassady

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