Portable key seat cutter

A key seat cutter for pulleys and the like comprising an elongated shank comprising a pair of flat plates spaced apart in parallel relation so that the opposed spaced apart faces form a guideway therebetween and a nose piece integrally connected to the forward ends of said plates, said nose piece comprising an enlarged boss having a flat front face and a threaded shaft projecting forwardly therefrom, said shaft being adapted to receive the bore of a pulley in which the key slot is to be cut, said nose piece having an axially extending slot therein which forms an axial extension of said guideway, said slot extending through said boss and said shaft in radial alignment with said guideway and having a straight, axially extending, bottom wall inclined at a small angle to the axis of the shaft, a feed bar in the form of an elongated wedge slideably arranged in said guideway and having a forward end portion seated on said inclined bottom face of said slot, said feed bar having an arm at its rear end extending laterally outwardly from the guideway, the top face of said feed bar extending parallel to the axis of said shaft, a thumb screw rotatably supported on said shank and in threaded engagement with the end of said arm for shifting said feed bar axially in said guideway, a broaching blade slideably arranged in said guideway and seated on the top face of said feed bar, a handle pivotally supported on said shank adjacent the rear end thereof, a link in said guideway having its rear end pivotally connected with said handle and having its forward end connected with said broaching blade so as to reciprocate the broaching blade when the handle is pivotally actuated, said broaching blade having a rearwardly facing cutting edge thereon adjacent the forward end thereof adapted to be reciprocated in said slot through the bore of a pulley supported on said shaft to cut a key slot therein when the handle is pivotally actuated, a nut threaded on the forward end of said shaft and a bushing on said shaft interposed between said nut and said boss, said bushing being adapted to bear against the front face of a pulley on said shaft to clamp the pulley against the front face of said boss when the nut is tightened, said bushing having a recess therein for accommodating the forward end of said broaching blade when the handle is actuated to shift the blade forwardly in said slot to a position wherein said cutting edge is disposed forwardly of said pulley.