Lawn mower blade sharpener apparatus

Details Lawn mower blade sharpener apparatus Lawn mower blade sharpener apparatus

1988-10-14

1990-06-26

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51217A, 51231, 51217P, 269 45, B24B 300, B24B 4106, B24B 4702, B23Q 100

Patent

active

049360531

ABSTRACT:
This invention relates to a lawn mower blade sharpener apparatus readily attachable to a bench grinder assembly having a rotating grinder wheel to sharpen an edge portion on a lawn mower blade. The lawn mower blade sharpener apparatus includes (1) a stationary grinder attachment assembly being clamped to an object support assembly on the bench grinder assembly; and (2) a pair of movable blade attachment assemblies, each connectable to an outer opposite end of the lawn mower blade. Each movable blade attachment assembly is provided with a main support rod engagable with the stationary grinder attachment assembly and having a plurality of blade connector clamps secured to an outer blade section of the lawn mower blade. The movable blade attachment assemblies are longitudinally movable within the stationary grinder attachment assembly so as to move an outer edge portion of the outer blade sections of the lawn mower blade to be sharpened in a desired angular and longitudinal relationship relative to the rotating grinder wheel.

REFERENCES:
patent: 845487 (1907-02-01), Strehl
patent: 1385649 (1921-07-01), Sherman
patent: 1973238 (1933-11-01), Walter
patent: 3733751 (1973-05-01), Williams

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