Cutter

Details Cutter Cutter

1990-03-21

1991-08-27

Yost, Frank T.

Cutting

Rotatable disc tool pair or tool and carrier

Tool pair comprises rotatable tools

83485, 83488, B26D 124

Patent

active

050423495

ABSTRACT:
A cutter for cutting sheets of material, paper and the like comprises a cup-type main rotary blade and a sub-rotary blade. The main rotary blade is supported by a main rotary shaft and has an edge part for performing cutting. The sub-rotary blade is rotationally responsive to rotational movement of the main rotary blade, has an edge part for performing cutting and is rotatably disposed to face the main rotary blade. A holding mechanism rotatably holds the main and sub-rotary blades so that the respective edge parts face each other in an overlapping manner. The holding mechanism is motor driven to enable the mechanism to move toward or away from the cutting work. A wire and pulley arrangement coupled to the holding mechanism functions to cause the main rotary blade to rotate as the holding mechanism is caused to move. A coil spring or a pair of plate springs bring the edge parts of the main and sub-rotary blades into press contact. This results in a cutting element having constantly varying cutting surfaces during cutting action.

REFERENCES:
patent: 3645158 (1972-02-01), Greis
patent: 4028973 (1977-06-01), Bogdanski et al.
patent: 4691605 (1987-09-01), Vanetik et al.
patent: 4784030 (1988-11-01), Waring

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