Earth working – Overload shifting – Against spring return device
Patent
1975-06-30
1976-08-24
Stouffer, Richard T.
Earth working
Overload shifting
Against spring return device
172705, 267137, 403 79, 403157, A01B 6104, A01B 1514, A01B 3524
Patent
active
039761444
ABSTRACT:
An automatic reset plow assembly includes a plow frame drawn by an agricultural vehicle. A plow standard is pivotally connected to the underside of the frame to enable the plow share to pivot backwardly and upwardly upon engaging an obstruction in the soil. The plow standard is resiliently biased downwardly by a toggle link assembly having one link pivotally connected to the plow standard and a second link pivoted to the frame. The other ends of the two links are pivotally connected together and to a slide element to form the elbow of the toggle link. The slide element is slideably received along a guide member which is also pivotally mounted to the frame. A compression spring surrounds the guide and resiliently biases the slide element and toggle links to maintain the plow standard in a normally downwardly pivoted plowing position. Upon encountering an obstruction, the plow pivots rearwardly and collapses the toggle link assembly. After the plow passes the obstruction, the spring returns the toggle link assembly and plow to their normal operative position. A damper assembly is optionally provided at the connection between the frame and second link to reduce shock resulting from the return of the plow from its tripped positioned to its operative plowing position.
REFERENCES:
patent: 468764 (1892-02-01), Flatau
patent: 636342 (1899-11-01), Lambert
patent: 894247 (1908-07-01), Walter
patent: 903117 (1908-11-01), Waterman
patent: 917603 (1909-04-01), Hench
patent: 1951701 (1934-03-01), Major
patent: 2109385 (1938-02-01), Garrison
patent: 2142455 (1939-01-01), Needham
patent: 2312405 (1943-03-01), Haagen
patent: 2565668 (1951-08-01), Simpson
patent: 3120873 (1964-02-01), Bledsoe
patent: 3321027 (1967-05-01), Johnson et al.
patent: 3486566 (1969-12-01), Nja
patent: 3550690 (1970-12-01), Quanbeck
patent: 3561541 (1971-02-01), Woelfel
Ralston Harold A.
Venable Phillip G.
J. I. Case Company
Stouffer Richard T.
LandOfFree
Spring automatic reset plow assembly with reset damper system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spring automatic reset plow assembly with reset damper system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spring automatic reset plow assembly with reset damper system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-772802