Agricultural drill/planter/coulter/disc blade with step plane notch edge
AssigneeOsmundson Mfg. Co.
InventorDouglas G. Bruce
Life of this patent
Estimating the term…
Abstract
A ground engaging agricultural blade, coulter, or disc having a central opening adapted to be attached to an implement for rotation about a substantially horizontal axis of rotation; the coulter or disc have an outer periphery; and plurality of step plane notches disposed in the outer periphery. The blade can be used with a hub disposed around the central opening or a spacer spool on a shaft extending through the central openings of adjacent blades, the spacer spools extending radially outwardly by a distance.
Claims23
A ground engaging agricultural tillage blade comprising:
- a disc comprising a central opening adapted to be attached to an implement for rotation about an axis of rotation, the disc comprising an outer periphery extending along a circumference of the disc;
- and
- a plurality of step plane notches disposed in the outer periphery of the disc alternating with a plurality of edge segments extending along the disc circumference, each step plane notch comprising a width and a major section comprising a uniform depth;
- wherein each edge segment comprises a length that is greater than the width of each step plane notch;
- wherein the width of each step plane notch is the same;
- wherein the uniform depth of the major section is the same for each step plane notch;
- wherein the uniform depth of the major section of each step plane notch is 50% or less of the width of the respective step plane notch;
- and
- wherein at least the major section of each step plane notch comprises a sharpened edge.
A ground engaging agricultural tillage blade apparatus comprising:
- a disc comprising a central opening adapted to be attached to an implement for rotation about an axis of rotation, the disc comprising an outer periphery extending along a circumference of the disc;
- a plurality of step plane notches disposed in the outer periphery of the disc alternating with a plurality of edge segments extending along the disc circumference, each step plane notch comprising a width and a major section comprising a uniform depth;
- and
- a hub being attached to the disc around the central opening;
- wherein each edge segment comprises a length that is greater than the width of each step plane notch;
- wherein the width of each step plane notch is the same;
- wherein the uniform depth of the major section is the same for each step plane notch;
- wherein the uniform depth of the major section of each step plane notch is 50% or less of the width of the respective step plane notch;
- and
- wherein at least the major section of each step plane notch comprises a sharpened edge.
A ground engaging agricultural tillage blade apparatus comprising:
- at least two discs, each disc comprising an outer periphery extending along a circumference of the disc and a central opening adapted to be attached to an implement for rotation about a substantially horizontal axis of rotation;
- a plurality of step plane notches disposed in the outer periphery of each disc alternating with a plurality of edge segments extending along the disc circumference, each step plane notch comprising a width and a major section comprising a uniform depth;
- wherein each edge segment comprises a length that is greater than the width of each step plane notch;
- wherein the width of each step plane notch is the same;
- wherein the uniform depth of the major section is the same for each step plane notch;
- wherein the uniform depth of the major section of each step plane notch is 50% or less of the width of the respective step plane notch;
- wherein at least the major section of each step plane notch comprises a sharpened edge;
- and
- wherein a spacer spool is disposed on a shaft between the at least two discs, the spacer spool extending radially outwardly from the central opening.
Dependencies are inferred from the claim text.