Mining block and bit
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United States of America Patent
Stats
-
Mar 11, 1986
Grant Date -
N/A
app pub date -
Mar 13, 1984
filing date -
Mar 13, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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