Row following system for a row cultivator
OwnerPeter L. Mansurinventor
Life of this patent
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Abstract
A row cultivator (10) includes a row following system (12) coupled to a toolbar (13) employing frame members (17) and (18) constrained to remain parallel by a cross member (21). Coulter wheels (30) and (31) secured to the frame members (17) and (18) are non-steerable and tool bar drift may be corrected. A tool (40) employs a leading blade (44) and a pair of diverging cutting blades (47) and (48) trailing behind the leading blade (44). A sheer release assembly employs a longitudinally extending bolt (70) centrally disposed and holding a shank (61) to a tool bar (65) so that when a tool on the shank (61) strikes an underground obstacle the bolt (70) is sheared longitudinally.
Claims13
A row following system for a row cultivator of the type employing a transverse tool bar carrying cultivating tools behind a prime mower, the row following system being adapted to inhibit deviation of the tool bar from a desired position, the row following system comprising means for biasing the tool bar to the desired position, the improvement comprising a pair of parallel spaced frame members trailing behind and pivotally coupled to the tool bar at transversely spaced apart locations to pivot in concert about spaced vertical axes, a cross member bridging between the frame members and having opposite ends pivotally coupled to the frame members to pivot about respective vertical pivot axes, a coulter wheel attached to each frame member, each coulter wheel rotating about a fixed horizontal axis and providing anchors relative to which the tool bar can be moved and there being provided frame member drive means biasing the tool bar to the desired position by being adapted to push the frame members relative to the cross member against the coulter wheels whenever the tool bar drifts from the desired position so that the tool bar position is thereby corrected.
A row cultivator comprising a transverse tool bar carrying cultivating tools behind a prime mover and a row following system adapted to inhibit deviation of the tool bar from a desired position, the row following system comprising means for biasing the tool bar to the desired position, the row following system comprising a pair of parallel spaced longitudinal frame members trailing behind and pivotally coupled to the tool bar at transversely spaced apart locations to pivot in concert about spaced vertical axes, a cross member bridging between the frame members and having opposite ends pivotally coupled to the respective frame members to pivot about respective rearwardly disposed vertical pivot axes, a coulter wheel coupled to each frame member, each coulter wheel rotating about a fixed horizontal axis and providing anchors relative to which the tool bar can be moved and there being provided frame member drive means biasing the tool bar to the desired position by being adapted to push the frame members relative to the cross member against the coulter wheels whenever the tool bar drifts from the desired position so that the tool bar position is thereby corrected.
Dependencies are inferred from the claim text.