Bit holder for miner

Details Bit holder for miner Bit holder for miner

1988-02-29

1989-05-09

Massie, Jerome W.

Mining or in situ disintegration of hard material

Miscellaneous

299 93, E21B 3518

Patent

active

048283274

ABSTRACT:
A pick holder for a miner comprising a mounting base and a bit holder detachably mounted to the mounting base by way of a substantially vertical join face. The join face incorporates a pair of mating faces on each of the mounting base and bit holder inclined relative to the longitudinal plane of the pick holder and forming an arrowhead formation with a pair of shoulders parallel to the longitudinal plane. The bit holder is secured to the mounting base by a longitudinal bolt a significant length allowing a desired degree of strain to be induced in the bolt during attachment.

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