Back to results
US 4,228,703 AGranted
Device for sharpening arrowheads
OwnerDonald C. Mossinventor
Life of this patent
Estimating the term…
Abstract
An arrowhead sharpening device comprised of two cylindrical, untapered files positioned with their longitudinal axes parallel to one another and their surfaces in contact so that a V-shaped trough is formed between them. Each blade of the broadhead arrow is sharpened by holding the arrow shank and placing the edge of the blade in the V-shaped trough and drawing the arrow toward the user.
Claims1
A device for sharpening broadhead arrows having a shaft terminating in individual blades having straight beveled edges converging forwardly to a point comprising:
- a first cylindrical file having a uniform circular cross section along its length, a central longitudinal axis, cutting ridges on the outside surface thereof, and a first end and a second end;
- a second cylindrical file having a uniform circular cross section along its length, a central longitudinal axis, cutting ridges on the outside surface thereof, and a first end and second end wherein the first cylindrical file has a primary cutting ridge diagonal to the axis of the file and defining a clockwise path proceeding from the first end of the file to to the second end, the second cylindrical file has a primary cutting ridge diagonal to the axis of the file and defining a counterclockwise path proceeding from the first end of the file to the second end;
- and means for holding said first file and second file in tangential, adjacent contact along a line on their respective outside surfaces with their longitudinal axes parallel thereby forming a longitudinal recess between said file, said means for holding said files being dimensioned so as to allow the files to be rotated about their respective axes so as to bring different portions of their outer surfaces into contact.
Dependencies are inferred from the claim text.