Earth working – Lawn aerator or perforator – or plug remover
Patent
1984-03-19
1986-03-25
Johnson, Richard J.
Earth working
Lawn aerator or perforator, or plug remover
172573, 172180, 172764, 172665, A01B 4502
Patent
active
045776970
ABSTRACT:
A sod cutting apparatus which includes a generally flat slide member having an upturned frontal portion and multiple slots extending in parallel, spaced relationship from front to rear, hinge arms pivoted to upward standing fulcrums secured to the slide member, the hinge arms and fulcrums in alignment with the slots, respectively, and round blades rotatably secured to the free ends of the hinge arms and projecting through the slots, respectively, with an adjusting mechanism secured to each hinge arm and provided with springs extending to the slide member for adjusting the tension on the blades. In a preferred embodiment, a plow attachment is mounted to the slide member rearwardly of the blades to aid in cutting and breaking up of the sod.
REFERENCES:
patent: 1796629 (1931-03-01), Strabenow
patent: 1829745 (1931-11-01), Grossi
patent: 2464038 (1949-03-01), Horth
patent: 3635291 (1972-01-01), Tomanek
Harrison John M.
Johnson Richard J.
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