Apparatus for rebeveling spiral knives

Details Apparatus for rebeveling spiral knives Apparatus for rebeveling spiral knives

1975-06-23

1977-03-08

Smith, Al Lawrence

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

56250, B24B 342

Patent

active

040105768

ABSTRACT:
The helically oriented knives of a cutting reel, such as found in forage harvesters, may be sharpened by reciprocating a sharpening stone along the beveled cutting edge of each knife. The reel is held against rotation when the knife to be sharpened has been disposed in its proper position relative to the stone, whereupon the stone is shifted back and forth along the beveled edge while at the same time rocked automatically to-and-fro in a direction transverse to the edge such that the curvature of the knife is automatically compensated for to maintain the stone in continuous engagement with the edge. Followers mounted on the stone ride along an arcuate guide rod conforming to the helical orientation of the knives to provide the required rocking of the stone as the latter is reciprocated.

REFERENCES:
patent: 3581446 (1971-06-01), Witt
patent: 3638363 (1972-02-01), Witt
patent: 3831325 (1974-08-01), Joray

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