Portable selector drill

Claim 1

An electrically energizable portable drilling device comprising: a frame defining a handle portion and including a hollow housing body with a front and rear end, an electrically energizable motor in said frame and having an output shaft, a collet chuck rotatably supported in said frame at the front end of said housing body for rotation on a central axis, an elongated ram reciprocably mounted in said frame and oriented in axial alignment with said central axis of said rotatably mounted collet chuck for movement between rearward and forward positions, drive means provided between said motor output shaft and said collet chuck to rotate the latter in response to rotation of said motor output shaft, converting means provided between said drive means and said ram to cause linear movement of said ram in at least one axial direction in response to rotation of said motor output shaft, cartridge means rotatably mounted in said frame housing body such that one of several drill bit openings defined in said cartridge means can be aligned with said axial direction of movement of said ram and a drill bit in said one cartridge opening moved forwardly into said collet chuck by said linear ram movement said cartridge means provided between said front and rear ends of said housing body and said ram movable through said carriage opening to so position a bit in said collet chuck.