Blade for a crop harvesting header with rotary disks
OwnerNeil Barnettinventor
Life of this patent
Estimating the term…
Abstract
A crop harvesting header has a cutter bar with a plurality of generally horizontal flail disks mounted thereon for driven rotation about generally upright axes spaced along the cutter bar. The disks each carry a pair of blades at diametrically opposed positions. The blades are shaped such that a leading cutting edge lies generally in a radial plane of the axis and extends generally outwardly from the axis from an inner end of the leading edge to an outer end of the leading edge where the outer end of the leading edge is angularly advanced relative to the inner end. This can be achieved by moving the pivot point of the blade pivot axis forward toward the leading edge. The blade may be twisted so that the trailing edge is above the leading edge.
Claims24
A crop harvesting header comprising:
- a cutter bar mounted across a width of the header for movement across the ground for harvesting a standing crop;
- a plurality of generally horizontal cutter disks mounted on the cutter bar at positions spaced transversely of the header with the disks being mounted on the cutter bar for driven rotation about respective generally upright axes spaced along the cutter bar;
- each disk having mounted thereon at a position spaced outwardly from the respective axis thereof at least one cutter blade such that rotation of the disk about its axis causes a standing crop to be cut by the blade as it rotates around the axis on the disk;
- each of the blades of the cutter disks having a leading cutting edge arranged generally in a radial plane of the axis and extending generally outwardly from the axis from an inner end of the leading edge to an outer end of the leading edge;
- each of the blades being shaped and arranged such that the outer end of the leading edge is angularly advanced relative to the inner end.
A flail blade for mounting on a rotating member for cutting crop, the blade comprising a metal plate having
- an opening therein defining a pivot mounting for a pivot axis at which the blade is mounted on the rotating member;
- a leading cutting edge arranged generally in a radial plane of the axis and extending generally outwardly from the axis from an inner end of the leading edge to an outer end of the leading edge;
- the blade being shaped and arranged such that, when mounted on the pivot mounting and rotated by the rotating member, the outer end of the leading edge is angularly advanced relative to the inner end.
Dependencies are inferred from the claim text.