Rock bit with quick change connection

Details Rock bit with quick change connection Rock bit with quick change connection

1975-08-11

1976-10-19

Purser, Ernest R.

Boring or penetrating the earth

With tool shaft detail

175 87, 175394, E21B 1700

Patent

active

039865703

ABSTRACT:
Disclosed herein is a rock bit having a quick change connection for use with an auger drilling machine. The quick change connection comprises a female connection extending upwardly from the body of a conventional rock bit. The connection has polygonal sides that mate with matching surfaces of a male connection secured to a kelly. A pin extends through mating holes in the female and male connections for fastening. Thus the male connection is axially releasable from the female connection by removing the pin. This permits convenient change between the auger drilling system and the rock bit drilling system.

REFERENCES:
patent: 2803434 (1957-08-01), Heinish
patent: 2838282 (1958-06-01), Colquitt
patent: 2887301 (1959-05-01), Day
patent: 2967724 (1961-01-01), Adams
patent: 2990896 (1961-07-01), Kandle
patent: 3024856 (1962-03-01), Henning
patent: 3092190 (1963-06-01), Gruere
patent: 3491844 (1970-01-01), Kelly, Jr.
patent: 3554306 (1971-01-01), Wilburn

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