Abstract: A horseshoe nail including a head and a shank having a point, the shank including planar front and rear faces and side walls connecting the front and rear faces at pairs of front and rear corners. The shank further includes an upper shank portion adjacent the head, a lower shank portion at an end of the shank distal from the head, and a middle shank portion between the upper and lower shank portions. The corners of the middle shank portion are rounded to define an arcuate transition between the front and rear faces and the side walls wherein the arcuate transitions provide for a reduction in stresses exerted on a hoof wall when a nail is inserted therein. In addition, the upper shank portion is provided with sharp edges or corners to provide a full width cross section for a portion of the nail in contact with the horseshoe at the junction between the horseshoe and the hoof to provide increased resistance to shearing forces.

Abstract: A file/rasp tool has upstanding teeth with curved cutting edges, arranged in a plurality of rows. The rasp teeth are of generally pyramidal shape and have a cutting face with a positive rake or slope, such cutting face being defined by upwardly converging side edges surmounted by a cutting tip or edge of generally arcuate configuration having a radius of curvature at least equal to the depth of the teeth. The file teeth have cutting edges including a cap portion at the tip of the tooth and extending therefrom at a forward angle to the front face of the tooth. Such tooth configurations provide a tool which has an extended useful life.