Earth working – Having tool overload shift controlled by a fluid pressure...
Patent
1976-01-14
1977-07-19
Shapiro, Paul E.
Earth working
Having tool overload shift controlled by a fluid pressure...
172256, 172279, 172292, 180 22, 180 2402, 180 2407, 280 81R, 280104, A01B 7100
Patent
active
040363040
ABSTRACT:
A self propelled apparatus providing a cultivator, planter units and fertilizer tanks. A traction wheel assembly composed of a plurality of wheels adapted to propel the entire apparatus forwardly by pushing. The plurality of traction wheels being mounted from a traction wheel assembly frame and the traction wheel assembly frame being formed in two sections which are pivoted together at the mid-point thereof. The plurality of traction wheels being arranged in pairs and adjacent pairs of traction wheels being connected together for co-action therebetween. Separate means are provided for driving the traction wheels and such wheels being balanced and mounted from the pivotal frame will impart substantially no compacting forces to the treated soil. The apparatus includes structure and mechanism whereby the sections of the traction wheel assembly frame may be separated to thereby reduce the width of the traction wheel assembly and traction wheel assembly frame for road transport.
REFERENCES:
patent: 2532580 (1950-12-01), Tom
patent: 3319545 (1967-05-01), Seaman
patent: 3874469 (1975-04-01), Sjovall
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