Patent ID: 9282687
Filing Date: 2016-03-15
CPC Classification: A01B,B23K

Claim Text:
1. A cutting edge attachment for a circular shaft of a harrow tine formed of a first material, the attachment comprising: a prefabricated mounting member comprising a solid body having a predefined shape and formed of a second material that is weldable to the first material of the harrow tine, the solid body having a front face and an opposing rear side, the front face of the mounting member having a flat surface at a lower end thereof and the rear side having a concavely arcuate curvature for conforming attachment to a front surface of the circular shaft of the harrow tine adjacent a lower end thereof to position the front face of the mounting member in front of the front surface of the circular shaft; a cutting edge member of geometric shape and comprising a third material that is harder than the first and second materials and less weldable to the first material of the harrow tine than the second material of the mounting member, the cutting edge member having a front face and an opposing flat rear face for flush placement against the flat surface of the front face of the mounting member at a lower end thereof with a remainder of the cutting edge member residing in an exposed position in front of the prefabricated mounting member; whereby the cutting edge member is mountable on the front face of the mounting member, which is in turn weldable to the circular shaft of the harrow tine to carry the cutting edge member in front of the lower end of the circular shaft of the harrow tine, where the front face of the cutting edge member forms a cutting edge of greater hardness than the harrow tine; wherein moving forwardly away from the rear side, the mounting member flares outwardly to a wider area of said mounting member having a width that exceeds said rear side of the mounting member and equals or exceeds a full-diameter of the circular shaft.