Cutting knife with multiple insert blades

Details Cutting knife with multiple insert blades Cutting knife with multiple insert blades

1992-01-06

1992-11-24

Yost, Frank T.

Cutting

Tool or tool with support

Toothed blade or tooth therefor

83844, 83665, 83675, 83853, 83854, B26D 1143

Patent

active

051653192

ABSTRACT:
A rotary cutting knife for paper cutting apparatus or the like includes a circular periphery carrier with a planar front face and a peripheral wall. Cylindrical bores in the peripheral wall receive cylindrical blade inserts. Each blade insert includes at its outer end an inclined planar blade face which intersects the cylindrical insert wall to form a cutting edge of elliptical contour. The insert receiving bores in the carrier are so oriented that inserts can be and are mounted therein with their blade faces all lying in a cutting plane parallel to the planar front face of the carrier and perpendicular to the axis of carrier rotation. Additionally, the bore orientation is such that the outer ends of the inserts lag their inner ends in the direction of carrier rotation. The assembly provides improvements in strength, blade wear life and precision of cut.

REFERENCES:
patent: 3542528 (1970-11-01), Bech
patent: 3990337 (1976-11-01), Barbour, Jr.
patent: 4480518 (1984-11-01), Futterer
patent: 4840098 (1989-06-01), Gammerler

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