Earth working – Diverse tools – Diverse rolling
Patent
1980-01-16
1981-09-29
Johnson, Richard J.
Earth working
Diverse tools
Diverse rolling
172441, 172595, 172583, A01B 2108
Patent
active
042917700
ABSTRACT:
A disc apparatus for forming levees used in rice farming and the like. The disc apparatus includes a longitudinal frame member onto which a pair of cross frame members are pivotally attached. A set of disc blades consisting of a plurality of disc blade members are attached to the opposite ends of each cross frame member. Each disc blade member of a set are of varying outside diameters with the disc blade member having the largest outside diameter located closest to the longitudinal frame member and with the size of each adjacent disc blade member uniformly decreasing so that the disc blade member having the smallest outside diameter will be located farthest from the longitudinal frame member. Each set of disc blade members can be adjusted so that the lowermost portion of each blade member thereof is level with the lowermost portion of each of the other blade members of that set.
REFERENCES:
patent: 297666 (1884-04-01), Bramer
patent: 561988 (1896-06-01), Harmon
patent: 853160 (1907-05-01), Cass
patent: 959356 (1910-05-01), Krebs
patent: 1631639 (1927-06-01), McDonald
patent: 2151918 (1936-12-01), Ingram
patent: 2286305 (1942-06-01), Priestley
patent: 3275087 (1966-09-01), Peht
patent: 4029155 (1977-06-01), Blair
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