Mining tool with automatic sprinkler control

Details Mining tool with automatic sprinkler control Mining tool with automatic sprinkler control

1983-09-22

1985-08-13

Leppink, James A.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Cleansing fluid passage

E21B 1060

Patent

active

045345970

ABSTRACT:
A mining tool with a rotary body carrying a number of peripherally spaced cutters has a water channel terminating in the vicinity of each cutter at a spray nozzle for the irrigation of particles such as coal dust detached from the mine face. The water supply for each nozzle is controlled by the associated cutter so as to be unblocked only when its working edge encounters resistance sufficient for a limited swing of the cutter shank about a pivotal axis against the force of a biasing spring, thereby opening a valve normally held closed by that spring.

REFERENCES:
patent: 3747982 (1973-04-01), Agnew et al.
patent: 4049318 (1977-03-01), Fruin
patent: 4219239 (1980-06-01), Weikert et al.

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