Mining bit with replaceable work engaging member

Details Mining bit with replaceable work engaging member Mining bit with replaceable work engaging member

1975-12-18

1978-04-11

Purser, Ernest R.

Tool driving or impacting

Impacting devices

Impact transmitting anvil

175400, 175410, 175415, 175417, 403316, E21B 935

Patent

active

040834158

ABSTRACT:
A mining bit, especially an impact bit for down-the-hole operations and the like, in which the bit comprises a body adapted for being chucked in an impact motor for being impacted by the hammer of the motor and for being rotated by the motor. The working end of the bit includes a detachable cup-shaped cap in which hard wear resistant inserts are mounted.

REFERENCES:
patent: 1523932 (1925-01-01), Davies
patent: 1922559 (1933-08-01), Strobel
patent: 2158120 (1939-05-01), Hirshberg
patent: 2215948 (1940-09-01), Williams
patent: 2716564 (1955-08-01), Lofquist
patent: 3103367 (1963-09-01), Peck
patent: 3429390 (1969-02-01), Bennett
patent: 3521716 (1970-07-01), Fisher

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