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US 4,248,310 AGranted
Skip row cultivators
OwnerWilliam R. McWilliamsinventor
Life of this patent
Estimating the term…
Abstract
The moveable plow shanks upon a skip row cultivator are mounted for vertical sliding motion. Each shank has a hydraulic cylinder connected to it by a flexible hydraulic line so that the tool bar to which the shanks are connected may be folded. By selectively energizing the hydraulic cylinders by a single valve, alternate cultivators are placed in the cultivating or non-cultivating position.
Claims10
In a skip row cultivator having
- a. an elongated horizontal tool bar,
- b. a plurality of moveable plow shanks on the tool bar,
- c. a plow on the bottom of each moveable shank;
- wherein the improvement comprises the following structure for moving the plows into cultivating position:
- d. a hydraulic cylinder interconnecting each shank and the tool bar,
- e. each cylinder having
- (i) an up position wherein the plow on the shank is out of cultivating position, and
- (ii) a down position wherein the plow on the shank is in cultivating position,
- f. each cylinder having
- (i) an up connection wherein if hydraulic pressure is applied thereto the cylinder is moved to the up position, and
- (ii) a down connection wherein if hydraulic pressure is applied thereto the cylinder is moved to the down position,
- g. a first hose line connected to the up connection on half the cylinders and the down connection on the remainder of the cylinders,
- h. a second hose line connected to the other connections,
- j. a source of hydraulic fluid under pressure, and
- k. a valve connecting the source of fluid selectively to the first or second hose lines.
12 more elements
In a skip row cultivator having:
- a. an elongated horizontal tool bar,
- b. at least one plow shank on the tool bar,
- c. a plow on the bottom of each moveable shank;
- wherein the improvement comprises the following structure for moving plows into cultivating position:
- d. a tool bar clamp attached to the tool bar in adjustable horizontal position,
- e. a loop on the tool bar clamp,
- f. said shank telescoped through the loop,
- g. a shank clamp on the top of the shank, and
- h. a hydraulic cylinder connecting the shank clamp and tool bar clamp.
6 more elements
In a skip row cultivator having
- a. an elongated horizontal tool bar,
- (i) said tool bar having a wing on each end of the central portion thereof,
- (ii) said wings being foldable upward,
- b. a plurality of moveable plow shanks on the tool bar, each wing carrying at least one of said moveable plow shanks,
- c. a plow on the bottom of each moveable shank;
- wherein the improvement comprises the following method of moving the plows into cultivating position:
- d. connecting a hydraulic cylinder between each shank and the tool bar,
- e. moving each shank up and down by its hydraulic cylinder,
- f. connecting every other hydraulic cylinder by a first flexible hose so that pressure in the hydraulic hose will move the shanks into a down position,
- g. connecting the remaining cylinder by a second flexible hose so that pressure in the second hose will move the remaining shanks into a down position, and
- h. pressurizing one or the other hose.
8 more elements
Dependencies are inferred from the claim text.