Earth working – With drive means for tool or cleaner – With specific relationship of mast-type hitch to implement
Patent
1982-02-25
1984-04-24
Shapiro, Paul E.
Earth working
With drive means for tool or cleaner
With specific relationship of mast-type hitch to implement
172311, 172443, 172450, A01B 3306, A01B 69041, A01B 69043
Patent
active
044442700
ABSTRACT:
A soil cultivating implement of relatively large working width mounts a transverse row of rotary soil working members and the soil working members are carried in two side-by-side groups by corresponding substantially axially aligned hollow frame portions. Each soil working member is rotatable about an upwardly extending axis and directly connected to a power take-off of a prime mower. In order to enable the implement to tow a separate implement, a rear coupling structure is provided that includes rearwardly directed arms that are prevented from becoming bent, broken or otherwise damaged during use, and particularly during inoperative transport. The two frame portions are foldable upwardly and inwardly towards one another about pivots by hydraulic rams and a forward frame beam mounts a coupling trestle on a central beam portion. A carrying structure having rear coupling points is releasably interconnected to the trestle and secured in a relatively fixed position. Preferably, chains or other flexible but inextensible tie members link the arms to the carrying structure, link the arms to one anther, and also link the arms to the outer ends of upwardly tiltable outer frame portions that are pivoted to the central beam portion. The outer frame portions are each linked to a respective group of soil working members by parallelogram linkages.
REFERENCES:
patent: 2599617 (1952-06-01), Davis
patent: 2701509 (1955-02-01), Rolfes
patent: 3826314 (1974-07-01), Lely et al.
patent: 3983943 (1976-10-01), Lely
patent: 4073346 (1978-02-01), Groth et al.
patent: 4114695 (1978-09-01), Lely
patent: 4148363 (1979-04-01), Lely
patent: 4224997 (1980-09-01), Lely
Bom Cornelis J. G.
van der Lely Ary
Albright Penrose Lucas
C. van der Lely N.V.
Shapiro Paul E.
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