A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/44
A01B 63/111 (2006.01) A01B 63/22 (2006.01)
Patent
CA 2015352
A hydraulic control system is provided which includes a pair of transversely spaced rockshaft cylinders which are plumbed in parallel and connected to opposite ends of a rockshaft on the central portion or main frame of a wide implement such as a field cultivator or chisel plow. The left-hand rockshaft cylinder is connected in series with a right-hand outer cylinder located near the right end of the implement. The right-hand rockshaft cylinder is connected in series with a left-hand outer cylinder on the opposite side of the implement. When a ground condition exists which causes, for example, the left side of the implement to dig more deeply and the left-hand wing cylinder to retract, the right-hand rockshaft cylinder will also be caused to retract so the right side of the implement tends to dig in more deeply. At the same time because of the parallel connection of the rockshaft cylinders, the left-hand rockshaft cylinder will be forced to extend to reduce the depth of penetration of the left side of the implement which offsets the tendency of the left side to dig in and provides a more uniform average working depth across the width of the implement.
Borden Ladner Gervais Llp
Deere & Company
LandOfFree
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