A - Human Necessities – 01 – B
Patent
A - Human Necessities
01
B
97/13
A01B 3/42 (2006.01) A01B 3/421 (2006.01) A01B 15/14 (2006.01)
Patent
CA 1239827
25871-53 ABSTRACT A reversing and adjustment mechanism, especially for a reversible plough adapted for hydraulically adjustable furrow width and hydraulic revers- ing of the plough, wherein the reversing and adjustment mechanism comprises a hydraulic cylinder with a "hydraulic memory" for adjustment of the furrow width. The oil chambers on both sides of the ordinary piston in the adjustment cylinder communicate with a reservoir via two pilot-controlled check valves with open passage toward the adjustment cylinder and a second direction-control valve. The chamber in the adjustment cylinder between the rear head and a freely movable piston communicates on the one hand with a hydraulic cylinder for reversing the plough, preferably with the rod end thereof, via a first check valve with open passage toward the reversing cylinder, and on the other hand communicates with the reservoir via a flow-control valve and a first direction-control valve. The reversing cylinder, on the end opposite its rod, i.e., preferably on the piston end, communicates on the one hand with the rod end of the adjustment cylinder via a pilot-controlled check valve with open passage toward the reversing cylinder and a pilot-controlled check valve with open passage toward the adjustment cylinder, and on the other hand communicates with the reservoir via a pilot-controlled check valve, the reversible flow- control valve and a first direction-control valve. P 1464/54/BH/RH
472269
Fetherstonhaugh & Co.
Kverneland A/s
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