Arrowhead with readily replaceable blades

Claim 1

An arrowhead assembly comprising: first and second generally delta-shaped blades, each blade having a longitudinal slot extending forwardly from the rear end thereof and defining a pair of symmetrically disposed blade members having first outer edge elements that converge forwardly from a first point to a tip portion of said blade and are sharpened along at least a part of their length, and having second outer edge elements that converge rearwardly therefrom to an engagement portion adjacent said slot therein, said second blade being seated within said slot of said first blade with said tip portion thereof fixedly engaged behind said tip portion of said first blade and with said slots thereof substantially coextensive, said engagement portion of at least said first blade including a narrow prong extending rearwardly from each blade member thereof and having an outwardly projecting lug thereon; a core member inserted axially into said coextensive slots of said blades and providing support therefor, said core member having an element providing a rearwardly disposed abutment surface, and having a shank portion extending rearwardly therefrom beyond said blades with said lugs of said first blade spaced from said abutment surface, said shank portion having means thereon for attachment to an arrow shaft; and a locking member mounted on said shank portion of said core member adjacent said abutment surface thereof, said locking member having a passageway therethrough and a plurality of peripherally spaced engagement elements adjacent one end thereof and extending inwardly into the passageway therethrough to define a coaxial aperture of reduced relative dimensions, said engagement elements of said locking member lying within the spaces between said lugs of said one blade and said abutment surface of said core member, and locking said lugs therebehind, said locking member being rotatable on said shank portion to an unlocked position in which said lugs can pass through the peripheral gaps between said engagement elements thereof, thereby permitting said blades to be dismounted forwardly from said core member.