CUTTING BIT WITH HARD CUTTING TIP CENTERING AND BRAZE JOINT CONTROL FEATURE

• Main Authors: PREZLOCK, WILLIAM P, MACINTYRE, RAY C
• Format: Patent
• Language: English
• Published: 09.01.2014
• Subjects: CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; MINING; MINING OR QUARRYING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

A cutting bit includes an elongate body having a shank portion and a head portion with an axial forward end. The head portion defines a pocket at the axial forward end thereof. The pocket includes a bottom surface and a sidewall extending from the bottom surface, wherein the sidewall of the pocket includes a plurality of projections extending outwardly from the sidewall. The cutting bit also includes a hard cutting tip attachably received in the pocket of the head portion. The plurality of projections are structured and arranged to position the hard cutting tip in the pocket and facilitate formation of a braze joint between the hard cutting tip and the pocket of the head portion. CCo C=)* co - -- - - - - - - - - - co~ / I, CCl.