Method of and means for reconditioning percussion drills

Details Method of and means for reconditioning percussion drills Method of and means for reconditioning percussion drills

B - Operations, Transporting

23

P

76/20

B23P 19/02 (2006.01) B23P 6/00 (2006.01) E21B 10/56 (2006.01) E21B 10/62 (2006.01) F23Q 2/16 (2006.01)

Patent

CA 1224949

ABSTRACT Method of and means for removing bits from drill heads in which bits are held in sockets with the bits projecting from the face of the drill head, in which an ejection duct is formed from the face of the drill head to the inner part of the socket to communicate with the rear of the bit, and fluid is forced into the socket behind the bit through the ejection duct at a pressure sufficient to eject the bit from the socket to allow a replacement bit to be positioned in the socket.

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