Cutlery – Blades – Plural cutting edge
Patent
1999-08-11
2000-12-26
Watts, Douglas D.
Cutlery
Blades
Plural cutting edge
451557, 76 82, B21K 512
Patent
active
061639656
ABSTRACT:
A spherical cutter and cutter holder arrangement, which includes a cutter holder and a spherical cutter mounted in a longitudinal mounting slot at the cutter holder and fixed thereto by a screw, wherein the spherical cutter has a first cutter layer and a second cutter layer, each cutter layer having a plurality of cutting edges spaced around the periphery, and a plurality of plane notches respectively spaced between each two adjacent cutting edges, the cutting edges of one cutter layer being respectively arranged with the plane notches of the other cutter layer at same azimuth, the cutting edges and the plane notches each having a head portion and a tail portion, the head portion and tail portion of one cutting edge of one cutter layer being respectively connected to the tail portion and head portion of one cutting edge of the other cutter layer, the head portion and tail portion of every plane notch of one cutter layer being respectively connected to the tail portion of one plane notch of the other cutter layer and the head portion of another plane notch of the other cutter layer, thereby defining a plurality of cutting mouths.
REFERENCES:
patent: 59770 (1866-11-01), Janh
patent: 528772 (1894-11-01), Dutton
Kova Carbide Tools Co., Ltd.
Watts Douglas D.
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