Harvesters – Motorized harvester – With means for reconditioning cutter or picker
Patent
1991-02-11
1992-04-14
Bui, Thuy M.
Harvesters
Motorized harvester
With means for reconditioning cutter or picker
56250, B24B 342
Patent
active
051036223
ABSTRACT:
A method and apparatus for maintaining the cylindrical profile of forage harvester cutterheads involves moving a grinding stone back and forth along a predetermined path between positions which are adjacent opposite ends of a cutterhead. Initially, the grinding stone is moved gradually toward the cutterhead along a first slope until it is fully engaged with the cutting edges of the cutterhead knives. Next, the grinding stone is moved generally lengthwise of the cutterhead along a line substantially parallel to the longitudinal axis of the cutterhead while it is kept fully engaged with the cutting edges of the cutterhead knives. Finally, the grinding stone is moved gradually away from the cutterhead along a second slope until it is fully disengaged from the cutting edges of the cutterhead knives.
REFERENCES:
patent: 3677316 (1972-07-01), Markham
patent: 3863403 (1975-02-01), Fleming
patent: 4321773 (1982-03-01), Fleming
patent: 4756068 (1988-07-01), McClure et al.
patent: 4799625 (1989-01-01), Weaver, Jr. et al.
patent: 4834303 (1989-05-01), McClure et al.
patent: 4843767 (1989-07-01), Johnson
Hall Larry D.
McClure John R.
Bui Thuy M.
Ford New Holland Inc.
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