Patent US3939997A successfully refreshed from Google Patents.
US3939997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor mounted implement device
Assignee: F AND W CO Inc
•
Filing: 1975-02-03
•
Granted: 1976-02-24
•
Expires: 1995-02-03
Abstract
Abstract A tractor includes a downwardly and forwardly opening guide support channel extending across the front end for engagement with the transversely extending portion of a U-shaped frame of an implement which also includes upstanding standards having a boom pivotally connected thereto with a ground-working tool on the outer end. A support stand is connected to the forward end of the U-shaped frame and rearwardly extending feet are provided on the standard for engaging slots on oppositely disposed support brackets carried on the tractor. Hydraulic power cylinders extend between the U-shaped frame and the boom. Upon the tractor being driven forwardly into the U-shaped frame and the transversely extending member being positioned in the open end of the channel the power cylinders are operated to pivot the U-shaped frame toward the boom about an axis through the channel until the standards engage the oppositely disposed support brackets whereupon pivoting then occurs about an axis through the support brackets and the forward end of the implement is pivoted upwardly causing the transversely extending member to move upwardly and rearwardly in the channel thereby moving the implement rearwardly on the tractor without the tractor being moved forwardly and wedge-shaped feet on the standards move into complementarily shaped openings on the support brackets to limit vertical movement of the standards. A vertically disposed pin locks the feet to the brackets limiting horizontal movement of the implement relative to the tractor.
Inventors
- 👤 Eldon M. Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:44
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; E02F3/968; E02F3/627; E02F3/6273
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
187 words
The method of mounting an implement on a tractor wherein the implement includes a ground-engaging tool carried on a boom pivotally connected to upright standards on a U-shaped frame having a support stand for supporting said implement in cooperation with said tool independent of said tractor and power means for pivoting the boom relative to said U-shaped frame, and said tractor including a guide support channel opening forwardly and downwardly and rearwardly positioned support brackets on opposite sides thereof, said method comprising the steps of, driving the tractor forwardly until a transversely extending portion on the U-shaped frame is positioned in the open end of the guide support channel, operating the power means to pivot said boom and said U-shaped frame towards each other about an axis through said channel and until the upright standards engage said support brackets, and operating the power means further to pivot said boom and U-shaped frame towards each other about an axis through said support brackets thereby moving the transversely extending portion upwardly and rearwardly in said channel and causing said implement to move rearwardly on said tractor without moving tractor.
Claim 2
Independent Claim
187 words
The method of mounting an implement on a tractor wherein the implement includes a ground-engaging tool carried on a boom pivotally connected to upright standards on a U-shaped frame having a support stand for supporting said implement in cooperation with said tool independent of said tractor and power means for pivoting the boom relative to said U-shaped frame, and said tractor including a guide support channel opening forwardly and downwardly and rearwardly positioned support brackets on opposite sides thereof, said method comprising the steps of, driving the tractor forwardly until a transversely extending portion on the U-shaped frame is positioned in the open end of the guide support channel, operating the power means to pivot said boom and said U-shaped frame towards each other about an axis through said channel and until the upright standards engage said support brackets, and operating the power means further to pivot said boom and U-shaped frame towards each other about an axis through said support brackets thereby moving the transversely extending portion upwardly and rearwardly in said channel and causing said implement to move rearwardly on said tractor without moving tractor.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein moving of said implement rearwardly on said tractor causes said standards to move into locking engagement with said support brackets.
Claim 4
Dependent Claim
199 words
In combination, an implement mountable on a tractor, comprising, an implement having a boom with a ground engaging tool on the outer end and pivotably mounted to upright standards at its inner end carried on a U-shaped frame and power means extendably interconnects said U-shaped frame and boom for relative pivotal movement therebetween, said U-shaped frame having a transversely extending member and a stand connected thereto for cooperation with said tool for supporting said implement independently of said tractor, a tractor having oppositely disposed rear side support brackets for engagement with said standards, and a downwardly and forwardly opening guide support channel on said tractor for receiving said transversely extending member whereby upon said transversely extending member being positioned in open end of said channel and said power means being operated to pivot said U-shaped frame and said boom towards each other said U-shaped frame pivots about an axis through said channel until said standards engage said support brackets whereupon continued operation of said power means causes said U-shaped frame to pivot about an axis through said support brackets and thereby moving said transversely extending member upwardly and rearwardly in said channel without said tractor having been moved forwardly.
Claim 5
Dependent Claim
199 words
In combination, an implement mountable on a tractor, comprising, an implement having a boom with a ground engaging tool on the outer end and pivotably mounted to upright standards at its inner end carried on a U-shaped frame and power means extendably interconnects said U-shaped frame and boom for relative pivotal movement therebetween, said U-shaped frame having a transversely extending member and a stand connected thereto for cooperation with said tool for supporting said implement independently of said tractor, a tractor having oppositely disposed rear side support brackets for engagement with said standards, and a downwardly and forwardly opening guide support channel on said tractor for receiving said transversely extending member whereby upon said transversely extending member being positioned in open end of said channel and said power means being operated to pivot said U-shaped frame and said boom towards each other said U-shaped frame pivots about an axis through said channel until said standards engage said support brackets whereupon continued operation of said power means causes said U-shaped frame to pivot about an axis through said support brackets and thereby moving said transversely extending member upwardly and rearwardly in said channel without said tractor having been moved forwardly.
Claim 6
Dependent Claim
24 words
The structure of claim 3 wherein said power means is further defined as being hydraulic cylinders extending between said U-shaped frame and said boom.
Claim 7
Dependent Claim
42 words
The structure of claim 3 wherein said downwardly and forwardly opening guide support channel is positioned across the front end of said tractor and said transversely extending member on said U-shaped frame extends between the oppositely disposed legs of said U-shaped frame.
Claim 8
Dependent Claim
28 words
The structure of claim 3 wherein said standards and support brackets on said tractor include cooperating lock means engageable upon said implement being moved rearwardly on said tractor.
Claim 9
Dependent Claim
49 words
The structure of claim 6 wherein said lock means on said standards include rearwardly extending feet portions and said lock means on said support brackets include cross members spaced above said brackets and defining an opening for receiving said feet and thereby limit relative vertical movement of said standards.
Claim 10
Dependent Claim
36 words
The structure of claim 7 wherein a pin element is positioned to extend through said cross member on one of said brackets and engage the foot in said opening thereby limiting horizontal movement of said standard.
Claim 11
Dependent Claim
17 words
The structure of claim 8 wherein said pin is spring loaded to normally extend through said foot.
Claim 12
Dependent Claim
40 words
The structure of claim 9 wherein said pin includes an eccentrically mounted cam means connected thereto and in engagement with a stationary means whereby rotation of said cam causes said pin to be lifted against the action of said spring.
Claim 13
Dependent Claim
14 words
The structure of claim 7 wherein said feet and openings are complementingly wedged shaped.
References Cited (Backward Citations)
CA833368A
Cited
US3043375A
Cited
US3324954A
Cited
DE1248551B
Cited
DE1924269A1
Cited
US3610450A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |