Earth working – Rolling – rotating or orbitally moving tool – With spring means other than for detent
Patent
1987-09-14
1989-09-19
Johnson, Richard J.
Earth working
Rolling, rotating or orbitally moving tool
With spring means other than for detent
172574, 172462, 172701, 1722605, A01B 504, A01B 1700
Patent
active
048672475
ABSTRACT:
A bedding plow providing a plurality of disks as plowing members each independently supported by a rearwardly located bearing supported by a trailing arm, which is supported, in turn, by a pivotal connection perpendicular to a fore to aft alignment of the plow. There is further disclosed for each independently supported disk, a gas-filled shock absorber and the top of the plow has a planar horizontal surface intended to allow the plow to slide without damage if it is caused to be overturned while in use.
REFERENCES:
patent: 687259 (1901-11-01), Packham
patent: 1808759 (1931-06-01), Bickerton
patent: 1817851 (1931-08-01), Shelton
patent: 2070425 (1937-02-01), Engel
patent: 2140144 (1938-12-01), Silver
patent: 4131162 (1978-12-01), Schmitz
patent: 4386661 (1983-06-01), McCause
patent: 4422512 (1983-12-01), Hodgson, Jr.
Beit Hashitta, "U Shaped Parabolic Subsoiler", Israel, 1-1981.
Johnson Richard J.
Thompson Jeffrey L.
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