US4248310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Skip row cultivators
Assignee: Individual
•
Filing: 1979-06-28
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Granted: 1981-02-03
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Expires: 1999-06-28
Abstract
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.
Inventors
- 👤 William R. McWilliams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
A; A01; A01B; A01B39/00; A01B39/20; A01B39/22; A01B63/00; A01B63/14; A01B63/24; A01B63/32
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
194 words
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.
Claim 2
Dependent Claim
194 words
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.
Claim 3
Dependent Claim
31 words
The invention as defined in claim 1 further comprising: m. the first line connected alternately to up connections and down connections as the hydraulic cylinders are spaced along the tool bar.
Claim 4
Dependent Claim
65 words
The invention as defined in claim 1 further comprising: m. a tool bar clamp attached to the tool bar in adjustable horizontal position, n. a loop on the tool bar clamp, o. one of said shanks telescoped through the loop, p. a shank clamp on the top of the shank, and q. one of said hydraulic cylinders connecting the shank clamp and tool bar clamp.
Claim 5
Dependent Claim
68 words
The invention as defined in claim 1 further comprising: m. said tool bar being a folded tool bar with a wing attached on each end of the central portion of the tool bar and the wings foldable upward, n. at least one of said moveable plow shanks mounted upon a wing, o. said hose line providing a flexible connection when the wing is folded up or folded down.
Claim 6
Dependent Claim
31 words
The invention as defined in claim 4 further comprising: p. the first line connected alternately to up connections and down connections as the hydraulic cylinders are spaced along the tool bar.
Claim 7
Dependent Claim
65 words
The invention as defined in claim 5 further comprising: q. a tool bar clamp attached to the tool bar in adjustable horizontal position, r. a loop on the tool bar clamp, s. one of said shanks telescoped through the loop, t. a shank clamp on the top of the shank, and u. one of said hydraulic cylinders connecting the shank clamp and tool bar clamp.
Claim 8
Dependent Claim
35 words
The invention as defined in claim 6 further comprising: v. said loop and shanks having correlative rectangular cross-sections, w. set screws threaded through said loops so the shank can be locked in a selected position.
Claim 9
Dependent Claim
97 words
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.
Claim 10
Dependent Claim
97 words
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.
Claim 11
Dependent Claim
34 words
The invention as defined in claim 8 further comprising: j. said loop and shanks having correlative rectangular cross-sections, k. screws threaded through said loops so the shank can be locked in a selected position.
Claim 12
Dependent Claim
162 words
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.
Claim 13
Dependent Claim
162 words
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.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |