Simplified adjustable tine harrow assembly
AssigneeDeere & Company
InventorDavid Lee Steinlage
Life of this patent
Estimating the term…
Abstract
A simplified, low component harrow attachment includes several clevis-like mounting castings pivotally connected between two identical flat side sheets. A link which pivots the ranks in unison is pinned to the legs of the mounting castings between the sheets by free-floating pins captured between the sheets. The castings can pivot to a retracted position and be secured by a pin for increased clearance between the teeth and the ground during transport. The rear mounting casting has a longer clevis structure than the remainder of the castings and serves as a tine depth stop when a stop pin is inserted through apertures in the sheets.
Claims14
A tillage implement adapted for forward movement over the ground:
- a drawbar having forward and rearward ends;
- first and second spaced upright plates connected to the rearward end;
- first and second brackets connected for pivoting about first and second pivots between a lower portion of the upright plates and including spaced legs extending upwardly from the pivots adjacent the upright plates;
- a link sandwiched between the legs of the first and second brackets;
- floating pins pivotally connecting the link to first and second brackets inwardly of the spaced upright plates for pivoting about axes transverse to the forward direction, wherein the pins are retained relative to the link and the brackets by the upright plates, the link constraining the first and second brackets for pivoting generally in unison;
- and
- tool structure connected to the first and second brackets and adjustable with respect to the ground with the pivoting of the brackets.
A harrow attachment having a reduced number of components and adapted for forward movement over the ground:
- a drawbar having forward and rearward ends;
- first and second spaced upright plates having upper portions connected to and spaced by the rearward end;
- first and second brackets connected for pivoting about first and second pivots between lower portions of the upright plates, the pivots spacing the lower portions so that the plates are generally parallel, the brackets including spaced legs extending upwardly from the pivots adjacent the upright plates;
- a link sandwiched between the legs of the first and second brackets;
- pins pivotally connecting the link to first and second brackets inwardly of the spaced upright plates for pivoting about axes transverse to the forward direction, the link constraining the first and second brackets for pivoting generally in unison;
- and
- tine structure connected to the first and second brackets and adjustable with respect to the ground with the pivoting of the brackets.
A harrow attachment having a reduced number of components and adapted for forward movement over the ground:
- a drawbar having forward and rearward ends;
- first and second spaced upright plates having apertured upper portions;
- first bolt structure extending through the apertured upper portions and the rearward end of the drawbar spacing the upper portions and providing a firm connection between the plates and the rearward end;
- at least first and second brackets connected for pivoting about first and second pivots between lower portions of the upright plates, the pivots including bushings spacing the lower portions so that the plates are generally parallel, and second bolt structure firmly sandwiching the bushings between the plates, the brackets including legs extending upwardly from the pivots adjacent the upright plates, wherein the first bolt structure through the plates and the drawbar and the second bolt structure through the bushings provide substantially all structural support for the spaced upright plates;
- a link extending between the legs of the first and second brackets, the link constraining the first and second brackets for pivoting generally in unison;
- and
- earthworking tool structure connected to the first and second brackets and adjustable with respect to the ground as the brackets are pivoted.
Dependencies are inferred from the claim text.