US3743023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control for ground tools of farm implements
Assignee: Hesston Corp
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Filing: 1971-10-07
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Granted: 1973-07-03
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Expires: 1991-10-07
Abstract
Abstract A control for farm implements which provides the alternative of raising and lowering a pair of the ground-engaging tools as a unit or individually and relative to each other. Each tool is pivotally coupled with a corresponding shaft having a power means releasably connected thereto for the raising or lowering of the tool by rocking its shaft. A removable cross pin is provided for interconnecting the shafts to cause the latter to move in unison as they are rocked by either of the power means. A graduated instrument is pivotally coupled with one of the shafts for indicating the extent of ground penetration of one or both of the tools.
Inventors
- 👤 T Bedwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:17
CPC Classifications
A; A01; A01D; A01D33/00; A01D33/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
116 words
In a farm implement: a pair of ground-engaging tools; a pair of relatively rotatable rock shafts housed one within the other for oscillation about a common axis; a power means operably connected with each shaft respectively for rocking the same; structure for each tool respectively operably coupling the same with its corresponding shaft to permit separate raising and lowering of the tools by rocking a selected one of the shafts relative to the other through its power means; and means for releasably interconnecting the shafts for rocking thereof in unison when the shafts are interconnected to effect raising and lowering of said tools as a unit when either or both of said power means is actuated.
Claim 2
Dependent Claim
116 words
In a farm implement: a pair of ground-engaging tools; a pair of relatively rotatable rock shafts housed one within the other for oscillation about a common axis; a power means operably connected with each shaft respectively for rocking the same; structure for each tool respectively operably coupling the same with its corresponding shaft to permit separate raising and lowering of the tools by rocking a selected one of the shafts relative to the other through its power means; and means for releasably interconnecting the shafts for rocking thereof in unison when the shafts are interconnected to effect raising and lowering of said tools as a unit when either or both of said power means is actuated.
Claim 3
Dependent Claim
31 words
In a farm implement as claimed in claim 1 wherein each structure includes a rocker arm rigid to the corresponding shaft and linkage pivotally interconnecting the arm with the corresponding tool.
Claim 4
Dependent Claim
21 words
In a farm implement as claimed in claim 1 wherein each power means is a fluid pressure piston and cylinder assembly.
Claim 5
Dependent Claim
41 words
In a farm implement as claimed in claim 1 wherein the operable connection of one of said power means with the corresponding shaft is releasable for rendering said one power means ineffective while the shafts are interconnected by said releasable means.
Claim 6
Dependent Claim
29 words
In a farm implement as claimed in claim 1 wherein said releasable means is a removable cross pin intersecting the shafts when the latter are interconnected by the pin.
Claim 7
Dependent Claim
23 words
In a farm implement as claimed in claim 1 wherein is provided a tool height indicator operably coupled with one of said shafts.
Claim 8
Dependent Claim
46 words
In a farm implement as claimed in claim 6 wherein said indicator is an extensible member pivotally coupled with said one shaft and provided with a pair of relatively shiftable elements, there being a device on the member for indicating the relative positions of the elements.
Claim 9
Dependent Claim
58 words
In a farm implement as claimed in claim 1 wherein one of said tools is a potato digging blade, there being a vertically swingable potato conveyor disposed to receive potatoes dug by said blade, one of said structures operably coupling one of the shafts with the conveyor, the blade being mounted on the conveyor for swinging movement therewith.
Claim 10
Dependent Claim
23 words
In a farm implement as claimed in claim 8 wherein the other of said tools is a rolling colter ahead of said blade.
Claim 11
Dependent Claim
40 words
In a farm implement as claimed in claim 1 wherein one of said tools is a rolling colter and means is provided to pull said colter, said pulling means mounting the colter for vertical swinging movement about a horizontal axis.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |