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Title: Multi-unit adjustable plow pulled by vehicle and having steering wheel turnable only on adjustment of plow

Abstract: The plow system may carry as many as 10 or 14 individual plow units. All of the units are connected together by a tie rod and may be pivoted in unison relative to a main frame. By pivoting the units, they may be opened or closed to adjust the width of cut between adjacent units over a continuous, wide range. The main articulated frame includes a forward frame section with a main beam inclined relative to the direction of travel of the vehicle, and the rear frame section with a main beam in axial alignment with the main beam of the forward frame section. The forward frame section and rear frame sections are pivotally connected together for rotation about a horizontal axis to permit the system to follow the contour of the ground extending in the direction of travel. The system includes a forward furrow wheel, a rear furrow wheel, and a steerable intermediate support wheel which rides on unplowed ground ahead of the system and is steered as a function of the adjusted position of the plow units.


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Inventors: Kinzenbaw, Jon E. (Williamsburg, IA, US)

Application Number: 617891
Filing Date: 1975-09-29
Publication_date: 1977-07-19
Assignee: DMI Inc. (Goodfield, IL)
Primary Class(es): 172/287 172/310, 172/569, 172/633, 172/647, 172/693
Other Classes:
US Patent Ref:
2979140Apr, 1961McKenzie172/413.
3066746Dec, 1962Sweet172/284.
3817333Jun, 1974Kinzenbaw172/283.
3818995Jun, 1974Mellen172/212.
3965989Jun, 1976Ward172/310.

Other Refs: 453,144
Nov, 1927DD

Primary Examiner: Stouffer, Richard T.
Assistant Examiner:
Attorney: Tilton, Fallon, Lungmus, Chestnut & Hill