Abstract: A device particularly suited for sharpening broadhead arrows and having sharpening surfaces which are curved in the direction the broadhead travels as it is sharpened. In a preferred embodiment, the sharpener comprises two sharpening surfaces to sharpen broadhead arrows and a third cylindrical sharpening surface which can be used to sharpen other discrete cutting elements. Each broadhead sharpening surface is formed as two sections which are curved about an axis perpendicular to the direction of travel of the arrow blades so that only one line of contact is formed between a blade and its respective sharpening section, resulting in even sharpening along all the points on a blade.

Abstract: A knife sharpener, comprising a sharpening rod mounted in a base, includes a first expandable position for storage as a compact unit.Wing members project laterally from a central member to provide stability during use, but are retractable into a cutout in the central member for compact storage. The wing members are drivingly connected to a support block for mounting the rod, so that when the wing members are positioned for use, the rod is rotated to an upright position. However, when the wing members are retracted, the rod rotates to a horizontal position, within a recess in the central member, for storage.The knife sharpener includes a rod mounting assembly comprising a sleeve, having a diameter larger than the rod, to permit the rod to be inclined, in any direction, at a predetermined angle relative to the sleeve. This predetermined angle is adjustable by rotating a plug, threadedly mounted in the sleeve.

Abstract: A hand-held guide for use in combination with a file for sharpening chain saw cutting teeth, the guide holding said file in axial compression to permit mounting of said file at the axial extremes thereof and to facilitate rotation of said file relative said guide during use. A portion of said guide is designed, when said file is axially compressed in said guide, to abut the cylindrical wall of said file throughout a substantial portion of the file's length, and this same portion is formed as a guide designed to accurately locate the file relative a chain saw cutting tooth, and to provide a gage for determining the proper height of the depth gage portion of chain saw teeth.