Mining block and bit

Details Mining block and bit Mining block and bit

1984-03-13

1986-03-11

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Miscellaneous

299 86, 37142R, E21C 3518

Patent

active

045751560

ABSTRACT:
A mining block carried by power-operated moving apparatus which is apertured to receive and retain the mounting shanks of elongate mining bits having a sharp wear point extending beyond the block. A block has an open-ended cylindrical recess which ensmalls at the base to a smaller coaxial recess. A conical shoulder at the juncture of the two recesses provides a step for the inner and base end of a mining bit to serve as a wear surface. A retainer on the shank above the base end holds the shank within the cylindrical recess. This eliminates wear at the mouth of the open-ended recess and prolongs the life of the mining block.

REFERENCES:
patent: 3397013 (1968-08-01), Krekeler
patent: 3752515 (1973-08-01), Oaks et al.
patent: 4201421 (1980-05-01), Den Besten et al.
patent: 4327947 (1982-05-01), Bower, Jr.
patent: 4346934 (1982-08-01), College et al.
patent: 4484783 (1984-11-01), Emmerich
patent: 4489986 (1984-12-01), Dziak

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