Abstract: A method of making a tillage blade by obtaining a generally circular sheet metal steel disc having an outer peripheral edge. Waves are made in the outer peripheral edge of a circular steel disc in a predetermined pattern while the steel is cold. The outer peripheral edge is then sharpened at a predetermined acute angle with respect to a first plane by grinding. Then the disc is heat treated to make it harder so it will wear longer. If it is desired to have a concave/convex disc, instead of a coulter, then during the heat treating process the disc is deformed so that the sharpened portions of the peripheral edge remain generally in the first plane but a central portion of the disc is disposed at least partially in a second plane which is parallel to but spaced from the first plane.

Abstract: An agricultural disc having a one piece metal plate is adapted to be rotated about a rotational axis. An inner circular section of the disc is disposed generally along a first plane. A outer section of the disc is disposed generally radially outwardly from the inner circular section, the outer section has an outer periphery which does not lie in the first plane. A transitional section of the one piece metal plate has an inner portion thereof connected to the inner circular section, the transitional section also having an outer circular portion thereof connected to an inner periphery of the outer section. The disc can be, but is not limited to, a flat or wavy coulter or a disc which can be concave/convex, with or without cut out portions.

Abstract: A coulter or disc having a plurality of directional notches therein is used in one rotational direction for one use and an opposite rotational direction for a different use. The notches are selected from many arcuate shapes and sizes. The notches taper from sharp to dull from one end to the other, but in use one can chose to lead with the dull or the sharp end of the notches. A method of making and using such coulters or discs is described and shown.

Abstract: A wavy disc and coulter with notches and method of using same, the disc or coulter having plurality of waves formed in the blade by deviating the entire outer periphery of the variable wave coulter from a flat plane. A plurality of crests and a plurality of valleys are formed in the blade, wherein each of said plurality of waves comprises a first and a second crest and one valley between the first and second crests at the outer periphery thereof. A notch is disposed in each respective wave on the outer periphery of the blade and wherein at least a majority of the notch is disposed between the first one of the respective crests and the respective valley, such majority of the notch being closer to the first respective crest than to the second respective crest.

Abstract: A wavy disc and coulter with notches and method of using same, the disc or coulter having plurality of waves formed in the blade by deviating the entire outer periphery of the variable wave coulter from a flat plane. A plurality of crests and a plurality of valleys are formed in the blade, wherein each of said plurality of waves comprises a first and a second crest and one valley between the first and second crests at the outer periphery thereof. A notch is disposed in each respective wave on the outer periphery of the blade and wherein at least a majority of the notch is disposed between the first one of the respective crests and the respective valley, such majority of the notch being closer to the first respective crest than to the second respective crest.

Abstract: A tillage blade having a sharpened outer peripheral edge on a blade body has a predetermined thickness. An annular portion of the blade is disposed between the outer peripheral edge and the body having a thickness which is less than the thickness of the body of the blade, the annular portion having a radially outer part and a radially inner part. The blade is tapered from the sharpened peripheral edge to the radially outer part of the annular portion and the blade is tapered from the radially inner part of the annular portion to the body. By making the sharpened bevels on out outer periphery of the blades taper in steps instead of just sharpening them by making either one bevel on one side, or a bevel on each side of the outer periphery of the blade, the blade will last longer than prior art tillage blades.

Abstract: Method of heat treating cultivating disc, coulter or grain drill blades made from heat quenched boron steels, such that they can be re-edged and re-sharpened using rollers, and yet retain excellent toughness, hardness and wear characteristics. The invention also includes the cultivating disc, coulter or grain drill blades made from boron steel, which have been heat treated according to the inventive method, such that can be re-edged or sharpened using pinch rollers. The cultivating blades are especially useful in the dry, sandy soils such as found in the wheat growing regions extending from central Kansas down into Texas.

Abstract: A coulter or disc having a plurality of directional notches therein is used in one rotational direction for one use and an opposite rotational direction for a different use. The notches are selected from many arcuate shapes and sizes. The notches taper from sharp to dull from one end to the other, but in use one can chose to lead with the dull or the sharp end of the notches. A method of making and using such coulters or discs is described and shown.

Abstract: A coulter or disc having a plurality of directional notches therein is used in one rotational direction for one use and an opposite rotational direction for a different use. The notches are selected from many arcuate shapes and sizes. The notches taper from sharp to dull from one end to the other, but in use one can chose to lead with the dull or the sharp end of the notches. A method of making and using such coulters or discs is described and shown.

Abstract: A coulter or disc having a plurality of directional notches therein is used in one rotational direction for one use and an opposite rotational direction for a different use. The notches are selected from many arcuate shapes and sizes. The notches taper from sharp to dull from one end to the other, but in use one can chose to lead with the dull or the sharp end of the notches. A method of making and using such coulters or discs is described and shown.

Abstract: Method of heat treating cultivating disc, coulter or grain drill blades made from heat quenched boron steels, such that they can be re-edged and re-sharpened using rollers, and yet retain excellent toughness, hardness and wear characteristics. The invention also includes the cultivating disc, coulter or grain drill blades made from boron steel, which have been heat treated according to the inventive method, such that can be re-edged or sharpened using pinch rollers. The cultivating blades are especially useful in the dry, sandy soils such as found in the wheat growing regions extending from central Kansas down into Texas.

Abstract: The present invention provides a wavy coulter having a plurality of variable-amplitude waves, each wave defined by a crest and an adjacent valley. The coulter is mounted on an implement such that a leading peripheral edge of the coulter rotates in a downward direction as it enters the soil. The waves having larger amplitudes of deviation from flat provide a driving force for turning the variable wave coulter. The waves having smaller amplitudes of deviation from flat provide penetration into the soil. The result is a coulter that is forgiving in both wet and dry soil conditions.

Abstract: A tillage member in the shape of a disc which has large notches which cause the disc to turn at the same speed as the forward speed of an implement to which it is attached, thereby mixing the soil instead of merely turning over the soil. In order to achieve this mixing and pulling up of the soil for incorporation purposes, the disc has an outer periphery with a concave side and a convex side. An opening in the center of the disc is provided for adapting the disc to be mounted for rotation about a generally horizontal axis. The disc has a plurality of notches in the outer periphery thereof and a plurality of projections disposed respectively between adjacent ones of the notches. The number of notches is no less than six and no more than nine and the number of projections is no less than six and no more than nine. Also, the depth of each notch is approximately fifty percent of the width of each notch.

Abstract: The present invention has several aspects to it, one of which is the provision of a chisel point which is straight and tapered from its thinnest part at the extreme front to a thicker part at the rear thereof for causing a sweep to wear longer than prior art sweeps. This sweep also improves soil penetration and is self-sharpening. Another aspect of the present invention is to provide an earth working sweep having a front end, a right side, a left side, and a central upper portion for connecting the sweep to an implement. It also has a right rear wing portion and a left rear wing portion with an intermediate portion connecting the front end to the central upper rear portion and the left and right rear wing portions. A right edge and a left edge have concave edges on the front and convex edges on the back so as to form a somewhat S-shaped configuration which reduces scrap when being made and adds to the longevity and performance of the sweep.

Abstract: The present invention has several aspects to it, one of which is the provision of a chisel point which is straight and tapered from its thinnest part at the extreme front to a thicker part at the rear thereof for causing a sweep to wear longer than prior art sweeps. This sweep also improves soil penetration and is self-sharpening. Another aspect of the present invention is to provide an earth working sweep having a front end, a right side, a left side, and a central upper portion for connecting the sweep to an implement. It also has a right rear wing portion and a left rear wing portion with an intermediate portion connecting the front end to the central upper rear portion and the left and right rear wing portions. A right edge and a left edge have concave edges on the front and convex edges on the back so as to form a somewhat S-shaped configuration which reduces scrap when being made and adds to the longevity and performance of the sweep.

Abstract: A tillage member in the shape of a disc which has large notches which cause the disc to turn at the same speed as the forward speed of an implement to which it is attached, thereby mixing the soil instead of merely turning over the soil. In order to achieve this mixing and pulling up of the soil for incorporation purposes, the disc has an outer periphery with a concave side and a convex side. An opening in the center of the disc is provided for adapting the disc to be mounted for rotation about a generally horizontal axis. The disc has a plurality of notches in the outer periphery thereof and a plurality of projections disposed respectively between adjacent ones of the notches. The number of notches is no less than six and no more than nine and the number of projections is no less than six and no more than nine. Each of the notches also has a width at the outer periphery of the disc which is between ten and fifteen percent of the diameter of the disc.

Abstract: A method of making earth tilling sweeps from disc scrap including a process of cutting a plurality of circular discs side-by-side to form disc cut-outs as well as discs. Each cut-out is formed around an axis which is perpendicular to the plane of the sheet of metal from which the discs are cut. The method herein includes leaving a predetermined width of material between the disc cut-outs and a predetermined width of metal between each respective disc cut-outs on at least one of the side edges. A sweep blank is made by cutting between and through the width of metal between the cut-outs and between the one edge and each one of two adjacent cut-outs. Further cutting of the sweep blank toward its final configuration includes forming attachment openings therein. The sweep blank is then bent into a three-dimensional shape for use in tilling the earth.

Abstract: An improved earth-working tool including a disc having a central portion and an outer peripheral portion. The disc is rotatable about a substantially horizontal axis extending through the central portion. A peripheral portion has a plurality of first points along the outer peripheral portion which are closer to the axis than other points on the outer peripheral portion. The first points are substantially equidistantly spaced from the axis. Radially inner sections of the outer peripheral portion are disposed along a line which is substantially tangential to an arc formed around the axis of rotation and through the first points, whereby the substantially tangential sections will tend to cut residue on top of the soil in a more downward direction than conventional circular discs do. The discs also have radially outer sections on the outer peripheral portion which are not along the substantially tangential lines and which are further from the axis than the first points.