Earth working – With ground support vertically adjustable relative to frame – Tool land ground support moved together relative to frame
Patent
1997-06-20
1998-11-03
Carone, Michael J.
Earth working
With ground support vertically adjustable relative to frame
Tool land ground support moved together relative to frame
172401, 172407, 172423, 172578, 172635, 172668, 172739, 172744, 172748, A01B 6316, A01B 6310
Patent
active
058295356
ABSTRACT:
An agricultural apparatus comprises a main frame with ground wheels supporting the frame for movement across the ground and a plurality of ground engaging openers mounted on the frame for engaging the ground. Each opener includes a depth control wheel mounted on the opener frame member for movement in a direction for varying the height of the depth control wheel on the opener frame member to vary the depth of the opener element in the ground. A common adjustment apparatus for all the depth control wheels comprises an actuator, a common drive linkage mounted on the main frame and driven by the actuator and a plurality of individual adjustment members. A cam plate operable by the adjustment member. The depth control wheel is mounted on an arm on which is pivotally mounted on the opener frame member on a first pivot pin, the arm including a portion thereof for engaging the cam plate. Each adjustment member extends generally longitudinally of the respective opener frame member from an upper end adjacent the main frame to a lower end for actuating the depth control wheel, the adjustment member being arranged such that it lies substantially on a line radial to the pivot axis. The pivotal transfer link is pivotally connected to the adjustment member by a second pivot pin and the adjustment member is pivotally connected to the cam plate by a third pivot pin. A distance between the first pivot pin and the second pivot pin is small compared to the distance between the second pivot pin and the third pivot pin.
REFERENCES:
patent: 2829577 (1958-04-01), Williams
patent: 3552498 (1971-01-01), Stauber
patent: 4209067 (1980-06-01), Poggemiller et al.
patent: 5167286 (1992-12-01), Bossler
The Furrow Magazine--Nov./Dec. 1995--"John Deere 1850 No Till Air Drill".
John Deere Air Seedings Systems pamphlet (pp. 12 & 13).
John Deere Drills pamphlet--"John Deere & 50 No-Till Drill"--p. 5.
K-Hart pamphlet--"K-Hart Double Disc Direct Seeding Unit" (2 pages).
Dutch Industries Ltd. pamphlet--"Kirby High Speed Culture" (1 page).
Battison Adrian D.
Carone Michael J.
Novosad Christopher J.
Thrift Murray E.
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