Cutlery – Cutting tools – Plural cooperating blades
Patent
1974-08-23
1976-01-27
Smith, Al Lawrence
Cutlery
Cutting tools
Plural cooperating blades
30222, 30DIG1, B26B 1906
Patent
active
039343405
ABSTRACT:
Pairs of planar cutting blades with angularly related cutting edges such as are used in grass shears, and the like, and which are mechanically actuated to move relative to each other and to cut by a scissors-like action are formed in a manner such that during each cutting action the contacting cutting point between each pair of coacting edges moves at a uniform speed. The improved blade construction finds application in shears, particularly cordless, i.e., battery, grass shears, by more nearly equalizing incremental power requirements; by reducing the maximum input power requirements; and by increasing time of performance between battery recharging at a given forward advancement speed of the shear.
REFERENCES:
patent: 360374 (1887-03-01), Clough
patent: 2652626 (1953-09-01), Dutcher
patent: 3193925 (1965-07-01), Hawley
patent: 3218710 (1965-11-01), Bruck
patent: 3564714 (1971-02-01), Wells
patent: 3623223 (1971-11-01), Edgell
patent: 3763638 (1973-10-01), Vogelenzang
Jones John E.
Lineback Lynn D.
Disston, Inc.
Olive B. B.
Peters J. C.
Smith Al Lawrence
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