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US 4,140,187 AGranted
Harrow support
OwnerEnard Leclercinventor
Life of this patent
Estimating the term…
Abstract
Support means for use in connecting a circular harrow to a tractor. The support means allow the harrow to pivot about two perpendicular, generally horizontal, axes thus permitting the harrow to more closely follow the contour of the ground being harrowed.
Claims23
Support means for use in connecting a circular harrow to a tractor, said tractor having three-point hitch implement mounting means on the rear end thereof, and said support means including:
- a support bar attachable to said three-point hitch implement mounting means to lie in a generally horizontal plane extending transversely of the longitudinal axis of the tractor;
- support frame means carried by said support bar, and extending rearwardly therefrom;
- means carried by said support frame means connecting it to the center of the harrow;
- carrying frame means attachable to said three-point hitch implement mounting means, and connected with said support bar and said support frame means;
- said support bar and said support frame means carried thereby incorporating first pivot means, arranged to permit said connected harrow to pivot relative to said support bar about a first, generally horizontal axis fixed with respect to the support bar and extending generally radially from the center of the harrow toward the center of the tractor;
- and
- second pivot means disposed between said carrying frame means and said support bar and the support frame means carried thereby, and arranged to permit said connected harrow to pivot about a second, generally horizontal axis fixed with respect to said carrying frame means, and extending generally transversely to said first axis.
4 more elements
Support means for use in connecting a circular harrow to a tractor, and comprising:
- a support frame, a support bar, and a carrying frame, said support frame being generally triangular in shape and having a pair of angled main struts joined directly together at the peak end of the support frame and joined together at their other ends by a cross-strut, said harrow being rotatably connected at the center thereof to said support frame by connecting means, said support bar being pivotally connected to said support frame at one end of said support frame, and said carrying frame being connected at said one end of said support frame, said carrying frame and said support bar being pivotally connected to said tractor;
- first pivot means on the support means permitting a connected harrow to pivot about a first, generally horizontal axis extending generally radially from the center of the harrow toward the center of the tractor;
- and second pivot means on the support means, said second pivot means permitting the connected harrow to pivot about a second, generally horizontal axis extending generally transversely to the first axis, said second axis being spaced a distance from the connecting means connecting the support means to the harrow, greater than the radius of the harrow.
Support means for use in connecting a circular harrow to a tractor, comprising a support frame, a separate support bar, and a carrying frame having upper and lower ends;
- connecting means carried by said support frame for use in connecting said support frame to the center of said harrow;
- first pivot means on the support means permitting a connected harrow to pivot about a first, generally horizontal axis extending generally radially from the center of the harrow toward the center of the tractor, said first pivot means comprising a pivot pin pivotably joining said support frame at its forward end to the center of said support bar;
- and second pivot means on the support means, said second pivot means permitting the connected harrow to pivot about a second, generally horizontal axis extending generally transversely to said first axis, said second pivot means being carried by said carrying frame for use in connecting the support means to the tractor, said carrying frame being connected to the forward end of said support frame and extending upwardly therefrom for use in lifting the support frame and an attached harrow, and including pivotable guide means attached to the forward end of the support frame for receiving the opposite end portions of said support bar, said guide means comprising a pair of guide plates, one on each side of the forward end of said support frame, and a vertically extending, substantially rectangular guide slot in each plate through which the ends of the support bar pass, said support bar having a quadrangular cross-section.
Dependencies are inferred from the claim text.