William Bradford Mello

US Patent:

40984486, Jul 4, 1978

Filed:

Sep 27, 1976

Appl. No.:

5/727162

Inventors:

Albert M. Sciaky - Palos Park IL
William R. Mello - Lockport IL

Assignee:

Sciaky Bros., Inc. - Chicago IL

International Classification:

B23K 1500
B23K 3704

US Classification:

228102

Abstract:

A method and apparatus for the manufacture of rotary drill bits such as are used for oil well drilling which are constructed from a multiplicity of segments. The segments are provided with registration means for positioning the segments relative to one another and are placed in a fixture where they are sized to a desired outer diameter without sliding the faces of the segment one against the other during the sizing operation. The faces are then brought into abutment, clamped and welded along the abutting surfaces between segments.