Metal tools and implements – making – Blank or process – Rotary cutter
Patent
1991-05-06
1992-03-24
Parker, Roscoe V.
Metal tools and implements, making
Blank or process
Rotary cutter
B21K 512, B26B 902
Patent
active
050977270
ABSTRACT:
A scalloped cutting edge is formed on a knife blank by disposing the blank between corresponding faces of a punch and die assembly, whereby a resilient face of the punch compresses the blank into a plurality of scallop-shaped depressions formed in the face of the die, thereby imparting a corresponding scalloped configuration to the edge portion of the blank is then sharpened by partially removing the convex side of the scallops by beveling the blank edge portion.
REFERENCES:
patent: 3213514 (1962-05-01), Evans
patent: 3741046 (1973-06-01), Chambon
patent: 3863538 (1975-02-01), Behnke
patent: 3881373 (1975-05-01), Nakamura et al.
patent: 4119004 (1978-10-01), Ludwig
patent: 4706524 (1987-11-01), Fischer et al.
Fischer Robert R.
Fischer W. James
Parker Roscoe V.
Urschel Laboratories Incorporated
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