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US 4,364,436 AGranted
Ploughs
OwnerCornelis van der Lelyinventor
Life of this patent
Estimating the term…
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OwnerCornelis van der Lelyinventor
Estimating the term…
A plow is structured to wholly or partly invert a furrow slice during operation. The furrow slice is cut loose by a leading V-shaped blade and is both compressed, and deflected laterally towards a side wall of the frame by a plurality of rotary lateral displacing rollers arranged in a row inclined to the direction of travel. The rollers are preferably of progressively increasing size towards the rear and co-operate with a soil guide surface at the rear of the plow in turning the furrow slice about an axis which extends in the direction of travel to deposit the slice substantially completely back into the furrow from which it was originally cut. In one version, the row of displacing rollers leads to a power-driven rotary soil guide unit of annular formation, the inverted furrow slice being delivered back into the furrow from which it was cut through the interior of the unit.
A plow comprising a mobile frame and a plow member supported on said frame, said member including a channel shaped trough and a soil cutting means at the front thereof, at least one movable soil displacing guide within said trough positioned to engage and laterally move a furrow slice of earth cut by said cutting means during operation, said member also comprising guide means having an upwardly curved surface located adjacent said guide, to the rear of said cutting means, said guide including a row of displacing guide rollers that are rotatable about upwardly extending axes and said row extending in the general direction of plow travel, said rollers progressively increasing in diameter from front to rear and driving means connected to rotate said guide rollers, said guide means being positioned to engage the furrow slice as the latter is moved from front to the rear of said rollers and invert the slice whereby the inverted slice is deposited to the rear in the furrow being formed.
A plow comprising a mobile frame and a plow member supported on said frame, said member including soil cutting means in front of a channel-shaped trough positioned to receive a furrow slice, a row of rotatable soil displacing guide rollers located within said trough adjacent one side thereof, said rollers being positioned to engage the furrow slice and progressively displace and compress same towards one lateral side of the trough as the slice is moved to the rear, guide means defining an upwardly curved surface being located adjacent and to the rear of said rollers to receive the compressed and turning furrow slice as the latter is moved from front to rear and then invert the slice whereby the inverted slice is deposited to the rear in the furrow being formed.
Dependencies are inferred from the claim text.