Urschel Laboratories Incorporated

W James Fischer

Robert R Fischer

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.

Method of making a knife having a scalloped cutting edge

A scalloped cutting edge is formed on a knife blank by disposing the blank between corresponding faces of a punch and die assembly, wherein 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.

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 comprises 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.

An improvement in the structure of a circular knife including a novel method of making its peripheral cutting edges by reducing the number of operations required to produce the knife. Previously, as presently known, the peripheral cutting edges of circular knives involves the expense of individually cutting material out of a peripheral area as compared to the unique method of the subject disclosure which simultaneously shears and forms offset portions and radial portions, and wherein the outer knife ends of these portions are simutlaneously sharpened by a common bevel which causes the edges of the sharpened ends of the offset portions to be inset with reference to the sharpened ends of the radial portions. These two significant factors in the manfacture of circular knives constitute a meritorious advance in the art.

Circular knife and method of making same

The subject invention involves equipment for precision size reduction of a product, such as cutting string beans lengthwise into strips. More particularly, the invention is directed to improvement in the structure of a circular knife including a novel method of making its peripheral cutting edges by reducing the number of operations required to produce the knife. Previously, as presently known, the peripheral cutting edges of circular knives involves the expense of individually cutting material out of a peripheral area as compared to the unique method of the subject invention which simultaneously shears and forms offset portions and radial portions, and wherein the outer knife ends of these portions are simultaneously sharpened by a common bevel which causes the edges of the sharpened ends of the offset portions to be inset with reference to the sharpened ends of the radial portions. These two significant factors in the manufacture of circular knives constitute a meritorious advance in the art.

Growing community of inventors

Valparaiso, IN, United States of America

W James Fischer