Abstract: A moldboard plow implement includes an elongated tool bar and several moldboard plow units, each plow unit including a plow bottom and a plow bottom support frame connected to the tool bar for pivotal movement about a pivot axis situated in vertical alignment with the point of the respective plow bottom. The plow units are pivotally moved in unison in response to the plowing speed to maintain the specific plow resistance constant for all tractor speeds.
Type:
Grant
Filed:
March 21, 1977
Date of Patent:
February 27, 1979
Assignee:
Iowa State Univ. Research Foundation, Inc.
Inventors:
Wesley F. Buchele, William I. Baldwin, James H. Eidet, Steven J. Marley
Abstract: A first farm implement having a front three-point hitch connection for mounting on a tractor is equipped with a rear three-point hitch means for connection with a front three-point hitch means on a second farm implement so that both farm implements can be lifted and towed in tandem fashion, or each implement can be individually lifted or towed by a single tractor. The first implement includes an elongated transverse tool bar which carries the respective connections of both the front and rear three-point hitch means therefor in alignment longitudinally of the tractor.
Type:
Grant
Filed:
June 4, 1976
Date of Patent:
February 14, 1978
Assignee:
Iowa State Univ. Research Foundation, Inc.
Inventors:
Roger L. Groth, Randall L. Harvey, Thomas R. Lauer, Morris L. Ronnebaum