Automobile body dent puller tool

A pneumatically-driven auto-body dent puller comprising in combination, a slide shaft, a handle at one end of said slide shaft, means for removably securing a self-tapping screw at the other end of said slide shaft, a cylindrical slide weight having a coaxial bore through which said slide shaft is slidingly received, impact abutment means at the handle end of said slide shaft, a tubular cylinder member concentrically disposed about said slide shaft, a pair of front and rear end cap members centrally apertured for the through passage of said slide shaft and arranged thereon for enclosing the front and rear ends, respectively, of said tubular cylinder member, the outer diameter of said cylindrical slide weight being slightly less than the internal diameter of said tubular cylinder member to permit free sliding movement thereof along said slide shaft and within said tubular cylindrical member, and means for injecting a blast of pressurized air within the front end of said cylinder member forwardly of said cylindrical slide weight while in a forward position within said cylinder to drive said cylindrical slide weight rearwardly for impact against said impact abutment means through said rear end cap member, said end cap members each being provided with peripheral skirt portions slidingly receiving respective end portions of said tubular cylinder member, and vent means in said rear end cap member for discharge therethrough of air in said cylinder displaced upon said rearward driving movement of said slide weight.