Earth working – Plural wheeled implements – Outrigged implement adjustable inwardly
Patent
1978-08-03
1980-11-11
Stouffer, Richard T.
Earth working
Plural wheeled implements
Outrigged implement adjustable inwardly
172501, A01B 7300
Patent
active
042327474
ABSTRACT:
A farm implement has a number of normally horizontal sections for supporting ground-engaging tools, hingedly interconnected such that the outer sections may be folded upwardly and inwardly to a reduced width for transport and storage. A folding assembly separate from the hinges includes a hydraulic piston and cylinder power unit coupled with a lift link that is pivotally connected to a force-transmitting lever which, in turn, acts against a fulcrum during the folding operation. The fulcrum has the second function of serving as one of a pair of limiting stops in a lost motion arrangement for the lever which permits the foldable section to rise and fall in response to uneven terrain. The lever is supported through a trunnion by a carriage which, during folding, is first tilted by the lever to align the trunnion with slotted trunnion guide tracks and then shifted within a slide box by the power unit acting through the trunnion as the last phase of the folding operation takes place.
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Pfenninger Billy J.
Stansel F. Harrison
Krause Plow Corporation
Stouffer Richard T.
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