George W Baur, Ross McKee: Rock bit assembly method. Hughes Tool Company, Robert A Felsman, June 24, 1980: US04209124 (17 worldwide citation)

A method for assembling rock bit sections in preparation for welding in a manner to assure dimensional integrity. Involved in the method is the use of a clamping fixture that has locator dowels and dowel holes on a base. These locator means are used in combination with a fixed position ring gage, de ...