US3815266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stump pulling implement
Assignee: Individual
•
Filing: 1972-12-01
•
Granted: 1974-06-11
•
Expires: 1992-12-01
Abstract
Abstract An implement frame includes a pair of horizontally spaced apart rearwardly extending horizontally pivotal arms which include stump-engaging wheels on their free ends. The stump-engaging wheels are tilted inwardly at their bottom and rear edges. The peripheral edges of the wheels include teeth elements for engagement with the ground and stumps. A hitch means includes a pair of rearwardly extending cables connected to the arms and to a rod member extending through a tongue sleeve. The clamping action on the stumps by the wheels is directly related to the pulling action required to move the implement forward and to lift the stump out of the ground. The implement frame includes rearwardly extending support arms on opposite sides of the stump wheel arms and ground support wheels are provided on the support arms. A power cylinder is connected to each of the support arms for adjustably pivoting the arms to vary the height of the stump wheels above the ground. The roots of the stumps are cut by a pair of spaced apart discs and chisel plows. A spring may be placed between the cables to provide for a smooth pulling action. An alternate hitch includes the rod member extending to adjacent the stump wheels and having outwardly extending pivotal elements connected to the arms.
Inventors
- 👤 J Schmitz
- 👤 D Suby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:12
CPC Classifications
A; A01; A01G; A01G23/00; A01G23/02; A01G23/06; A01G23/062
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
85 words
A stump-pulling implement comprising, a frame, a pair of arms pivoted at their forward ends to said frame, a ground and stump-engaging wheel on each arm, and hItch means connected to said arms for pivoting the arms towards each other to provide a clamping action between the wheels thereby causing said wheels to grip a stump therebetween and lift it out of the ground by said wheels rotating forwardly as said implement is moved forwardly upon a forward force being applied to said hitch means.
Claim 2
Dependent Claim
85 words
A stump-pulling implement comprising, a frame, a pair of arms pivoted at their forward ends to said frame, a ground and stump-engaging wheel on each arm, and hItch means connected to said arms for pivoting the arms towards each other to provide a clamping action between the wheels thereby causing said wheels to grip a stump therebetween and lift it out of the ground by said wheels rotating forwardly as said implement is moved forwardly upon a forward force being applied to said hitch means.
Claim 3
Dependent Claim
45 words
The structure of claim 1 wherein said stump wheel arms are pivoted for horizontal swinging movement and the gripping action between said wheels and a stump varies directly with the pull required to move said implement forwardly and lift said stump out of the ground.
Claim 4
Dependent Claim
15 words
The structure of claim 2 wherein said wheels are tilted inwardly along their bottom edges.
Claim 5
Dependent Claim
37 words
The structure of claim 2 wherein said wheels are tilted inwardly along their rearward and bottom edges whereby said wheels are spaced closer together along their bottom and rear edges than along the top and forward edges.
Claim 6
Dependent Claim
24 words
The structure of claim 4 wherein a plurality of teeth are provided around the periphery of said wheels for engaging stumps between said wheels.
Claim 7
Dependent Claim
28 words
The structure of claim 3 wherein said vehicle is dependent for its forward driving force entirely upon said forward force applied by said hitch means to said arms.
Claim 8
Dependent Claim
40 words
The structure of claim 4 wherein said hitch means includes a pair of cables connected together at their forward ends and extending rearwardly along said arms to adjacent said rear ends and thence laterally to engagement with the opposite arm.
Claim 9
Dependent Claim
25 words
The structure of claim 7 wherein a spring means is provided between said cables adjacent their forward ends to cushion the pull on said arms.
Claim 10
Dependent Claim
38 words
The structure of claim 7 wherein said hitch means further includes a tongue connected to said cables at their forward ends and a sleeve is provided on said frame and said tongue is movably received in said sleeve.
Claim 11
Dependent Claim
39 words
The structure of claim 4 wherein said hitch means is further defined as including a tongue which is positioned between said arms and includes a pair of pivotal wing elements having their rear ends pivotally connected to said arms.
Claim 12
Dependent Claim
18 words
The structure of claim 4 wherein a pair of root cutting disc wheels are provided on said frame.
Claim 13
Dependent Claim
32 words
The structure of claim 11 wherein said disc wheels are provided on horizontally extending pivot arms and a spring means extends vertically from said frame to said pivot arms to cushion them.
Claim 14
Dependent Claim
78 words
The structure of claim 4 wherein said frame includes a forward tongue assembly and a transversely extending upstanding frame assembly on the rear of said tongue assembly, a pair of wheels on support arms pivotally connected to opposite ends of said upstanding frame assembly and said support arms extend rearwardly parallel to said pair of arms carrying said stump engaging wheels, and power means for adjustably pivoting said supprot arms to vary the elevation of said stump-engaging wheels.
Claim 15
Dependent Claim
20 words
The structure of claim 13 wherein said power means include hydraulic cylinders extending between said arms and said upstanding frame.
Claim 16
Dependent Claim
27 words
The structure of claim 4 wherein a scraper is positioned on each of said stump-engaging wheel arms for cleaning the inside peripheral edges of said stump-engaging wheels.
Claim 17
Dependent Claim
33 words
The structure of claim 4 wherein a pair of spaced apart plow shears are provided ahead of and in line with said stump-engaging wheels for cutting the roots on opposite sides of stumps.
Claim 18
Dependent Claim
45 words
The structure of claim 1 wherein said stump wheel arms are pivoted for horizontal swinging movement and the gripping action between said wheels and a stump varies directly with the pull required to move said implement forwardly and lift said stump out of the ground.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |