Patent ID: 8201893

Claim:
A tool holder for retaining a tool having a cylindrical shank with a given diameter wherein said tool holder is removably received in a bore of a base block mounting, said tool holder comprising a body having a longitudinal axis, said body having an enlarged forward end with a transverse forward surface, and a side surface, said body also having an axially rearwardly extending shank sized to fit within said base block mounting bore, said body further having an axial bore extending into said forward surface and through said enlarged forward end and said shank, said axial bore sized to receive said shank of said tool, said enlarged forward end having a cylindrical hole generally perpendicular to said axis and said cylindrical hole having a diameter also sized to receive said shank of said tool, said cylindrical hole being a blind hole, said cylindrical hole opening into said side surface, and said enlarged forward end having a counterbore around said opening of said cylindrical hole in said side surface.