Earth working – Tool – standard or connection – Spring biased or formed tool or tool part
Patent
1976-02-23
1977-01-25
Stouffer, Richard T.
Earth working
Tool, standard or connection
Spring biased or formed tool or tool part
111 52, 172307, 172484, 172572, 172705, A01B 6104, A01B 6506
Patent
active
040046400
ABSTRACT:
A hanger mechanism for the attachment of a soil engaging tool to a horizontal tool bar located at the forward end of an agricultural vehicle through a series of pivotally interconnected structures. The hanger mechanism includes an upper and lower arm structure which extend forward from the tool bar and are disposed one above the other. A vertical bar structure is pivotally connected to the forward ends of the upper and lower arm structures with the upper and lower arm structures parallel. An implement arm having an upper end adjacent and below the forward end of the lower arm structure extends rearward and downwardly to a lower end. The implement arm is pivotally attached between the upper and lower ends thereof to an extension of the vertical bar structure. A connecting link is pivotally attached at one end to the lower arm structure rearward from the forward end thereof, and pivotally attached at its other end to the upper end of the implement arm. The seven pivotal axes thus formed are parallel to the tool bar which allows the lower end of the implement arm to move substantially vertically when urged upward or downward. The soil engaging tool is mounted on the lower end of the implement arm.
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patent: 3571956 (1971-03-01), Heiberg
patent: 3670824 (1972-06-01), Buchanan
patent: 3901169 (1975-08-01), Ribouleau
Dorman William S.
Stouffer Richard T.
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