Non-rotary mining cutter with recessed nozzle insert

Mining or in situ disintegration of hard material – Cutter tooth or tooth head – Cleansing fluid passage

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299 17, E21C 2560

Patent

active

042807352

ABSTRACT:
A tool for a mineral winning machine, more usually a plough, has a flat plate-like body with a bore containing a nozzle insert and preferably a hard metal cutting region or blade is also provided on the body. High pressure water is conveyed through the bore and nozzle insert to discharge as a jet which is directed to impinge against the mineral or coal face to effect a cut therein hydraulically. The nozzle insert has its discharge mouth in a protected position inside the body.

REFERENCES:
patent: 3298451 (1967-01-01), Eckel et al.
patent: 3563324 (1971-02-01), Lauber
patent: 3747982 (1973-07-01), Agnew et al.
patent: 3861751 (1975-01-01), Erwien
patent: 3904247 (1975-09-01), Ostrop
patent: 4025116 (1977-05-01), Roepke et al.
patent: 4070064 (1978-01-01), Cobb et al.

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