Patent ID: 6422323
Filing Date: 2002-07-23
Classification: A01B,Y02P

Abstract:
In a chisel plow for performing deep tillage, having an upright shank adapted to be mounted to a tillage implement, an improved tillage point comprising:a tooth member mounted to said shank and extending downwardly and forwardly therefrom in a use position; first and second wing, one mounted to either side of said tooth, each wing extending upwardly and rearwardly in a field use position and having an elongated inner edge adjacent said tooth member, an outer edge generally parallel to said inner edge and substantially shorter than said inner edge, a forward edge extending rearward from said tooth member and located above the working level of the forwardmost location of said tooth member in said field use position, and a rear edge extending forwardly of said tooth member, said wings characterized in that the inner edges of said wings provide a substantially greater rise to lift soil than does the outer edge thereof, thereby imparting a lifting and laterally rolling motion to tilled soil; wherein each of said wings extends rearwardly and upwardly from said forward edge at a lift angle of about twenty-four degrees or less relative to the horizontal in a field use position; wherein said tooth is an elongated, narrow flat member and each of said wings of said points is generally planar and has an elongated inner edge generally parallel to and substantially shorter than outer edge, whereby each wing lifts soil a greater extent above the inner edge thereof, thereby imparting a lateral rolling motion to soil being worked on either side of said tooth member; wherein each of said wings is formed of flat steel plate and is in the general form of a trapezoid defining a leading edge spaced above the lowermost extent of said tooth member and extending outwardly and rearwardly from said tooth member in said field use position; wherein said leading edge of each of said wings extends rearwardly relative to the inner edge thereof at approximately forty-five degrees; wherein each of said wings further includes a rear edge extending forwardly at approximately thirty degrees relative to said inner edge thereof; and wherein said inner edge of each wing is at least approximately twice as long as the outer edge thereof.