Back to results
US 6,164,386 AGranted
Harrow
OwnerRonald T. Delaurierinventor
Life of this patent
Estimating the term…
Abstract
A harrow is provided having an elongate tool bar mounted on wheels for movement in a forward direction perpendicular to the tool bar. A plurality of harrow elements are mounted on the tool bar to extend generally rearward therefrom. A pair of support arms are pivotally mounted on the tool bar at a first end and mount each harrow element on a second end towards a rearward end of the harrow element. A hanger is connected between the support arms and the harrow element towards a forward end of the harrow element for suspending the harrow element therefrom. A plurality of tines are mounted on the harrow element such that the angle of the tines relative to the ground may be adjusted. A coupling connects between the hanger and the tines such that the height of the front end of the harrow frame is adjusted in response to tine angle adjustment.
Claims13
A harrow comprising:
- an elongate tool bar;
- a plurality of wheels supporting the tool bar on the ground for movement in a working direction perpendicular to the tool bar;
- and
- a plurality of harrow elements mounted on the tool bar to extend generally rearward therefrom for movement therewith in the working direction;
- each harrow element comprising;
- a pair of support arms pivotally mounted spaced apart on the tool bar, the support arms extending generally rearward therefrom;
- a frame pivotally mounted on a rear end of the support arms towards a rearward end of the frame such that the frame is pivotal about an axis extending through the rear ends of the support arms;
- a hanger connected between a front end of the frame and the support arms for suspending the front end of the frame from the support arms;
- a plurality of tine support bars mounted on the frame transversely to the working direction, the tine support bars being spaced apart across the frame, each tine support bar having a plurality of tines mounted thereon, the tines being spaced apart along the tine support bars, each tine being mounted at an upper end on the tine support bar to extend generally downward to a ground engaging end, each tine support bar being supported for pivotal movement relative to the frame about a respective tine axis extending longitudinally of the tine support bar;
- a tine adjustment mechanism connected between the tine support bars such that displacement of the tine adjustment mechanism relative to the frame pivots the tine support bars in unison about the respective tine axes for adjusting an angle of the tines relative to the ground as the tine adjustment mechanism is displaced relative to the frame;
- and
- a coupling supporting the frame on the hanger, the coupling being pivotally mounted relative to the frame about a coupling aXis extending through the coupling;
- the tine adjustment mechanism being connected to the coupling such that the coupling is arranged to be pivoted about the coupling axis as the tine adjustment mechanism is displaced relative to the frame to adjust a height of the front end of the frame relative to the support arms in response to adjusting the angle of the tines.
10 more elements
A harrow comprising:
- an elongate tool bar supported for movement along the ground in a forward working direction extending transversely to the tool bar;
- and
- a plurality of harrow elements mounted on the tool bar to extend generally rearward therefrom for movement therewith in the forward working direction, each harrow element comprising;
- a pair of support arms pivotally mounted spaced apart on the tool bar, the support arms extending generally rearward therefrom;
- a frame pivotally mounted on a rear end of the support arms towards a rearward end of the frame such that the frame is pivotal about a axis extending through the rear ends of the support arms;
- a plurality of line support bars mounted on the frame transversely to the working direction, the tine support bars being spaced apart across the frame, each tine support bar having a plurality of tines mounted spaced apart along the tine support bars at respective upper ends to extend generally downward to respective ground engaging ends, the tine support bars being supported for pivotal movement relative to the frame for varying a tine angle relative to the around;
- and
- a hanger comprising a pair of support links mounted on the front end of the frame, each support link being slid ably mounted at an upper end on a corresponding one of the support arms, the support links having a portion of increased dimension adjacent the upper end thereof arranged to engage the respective support arm for restricting downward movement of the front end of the frame relative to the support arms while permitting the front end to float upward relative to the support arms in response to elevation changes of the ground as the frame is displaced in the working direction.
5 more elements
A harrow comprising:
- an elongate tool bar supported for movement along the ground in a forward working direction extending transversely to the tool bar;
- an
- a plurality of harrow elements mounted on the tool bar to extend generally rearward therefrom for movement therewith in the forward working direction, each harrow element comprising:
- a pair of support arms pivotally mounted solaced apart on the tool bar, the support arms each comprising a first portion extending upward and rearward from the tool bar to an upper end and a second portion extending downward and rearward from the upper end of the first portion;
- a frame pivotally mounted on a rear end of the support arms towards a rearward end of the frame such that the frame is pivotal about an axis extending through-the rear ends of the support arms, a front end of the frame being spaced below the upper end of the support arms such that there is provided a clearance space between the frame and the upper end of the support arms permitting upward deflection of the front end of the frame;
- a plurality of tine support bars mounted on the frame transversely to the working direction, the tine support bars being spaced apart across the frame, each tine support bar having a plurality of tines mounted spaced apart along the tine support bars at respective upper ends to emend generally downward to respective ground engaging ends, the tine support bars being supported for pivotal movement relative to the frame for varying a tine anal relative to the ground;
- and
- a hanger connected between the front end of the frame and the support arms for suspending the front end of the frame from the support arms permitting the front end to float upward relative to the support arms in response to elevation changes of the ground as the frame is displaced in the working direction.
5 more elements
Dependencies are inferred from the claim text.