Rotary shear with improved cutting assembly

Details Rotary shear with improved cutting assembly Rotary shear with improved cutting assembly

1975-01-23

1976-03-23

Smith, Al Lawrence

Cutlery

Cutting tools

Plural cooperating blades

30207, 30240, 56 175, B26B 1500, A01G 306

Patent

active

039451160

ABSTRACT:
A portable hand-held shear for cutting grass and the like comprising a housing enclosing an electric motor and forming a handle. The motor includes an output rotary shaft which, through a gear train, drives a rotary blade. A stationary bed knife assembly connected to the housing cooperates with the rotary blade in scissor-like fashion to cut grass.
An improved cutting assembly is described in which the rotary cutting blade member, of particular design and positioned in a floating relationship above the stationary bed knife assembly, is inclined into engagement with the cutting teeth projecting from the stationary bed knife assembly, also of particular design, in such a manner to improve the performance of the shear. The improved cutting assembly further includes a rotary hub drive member which cooperates with the shear housing and the bed knife to eliminate clogging and partially overlaps the bed knife assembly's cutting teeth to further improve the performance of the shear.

REFERENCES:
patent: 2134609 (1938-10-01), Hay
patent: 2618851 (1952-11-01), Sundstrand
patent: 2867040 (1959-01-01), Mertesdorf
patent: 3403440 (1968-10-01), Omori
patent: 3774379 (1973-11-01), Mizobata

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