Operating head with phased fluid delivery

Details Operating head with phased fluid delivery Operating head with phased fluid delivery

1987-11-20

1989-08-01

Massie, IV, Jerome W.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Cleansing fluid passage

299 17, E21C 3522

Patent

active

048529478

ABSTRACT:
Operating head assembly, e.g. cutter head of a coal or other mining machine having provision for feeding a supply of water or other fluid to the head during operation has provision for phasing the fluid delivery to limit it to the zone about the head in which the cutting action is taking place dependent on the direction of movement of the head. Delivery jets of the head are fed through individual valve units (22) each having an independently operable hydraulic or other actuator (28), the power input thereto being controlled by apertured timing faces (36, 38) on co-acting parts of the head (11) and body (10), power feed through the timing faces being controlled e.g. in correspondence to the position of change-over valve (44, 46) operating in response to controls which direct movement of the head. In an alternative construction the valve units are actuated mechanically by a camming formation which can be indexed depending on the direction of movement.

REFERENCES:
patent: 4049318 (1977-09-01), Fruin
patent: 4162763 (1979-07-01), Higgins
patent: 4368918 (1983-01-01), Droscher et al.
patent: 4368925 (1983-01-01), Honke
patent: 4621869 (1986-11-01), Parrott
patent: 4660891 (1987-04-01), Kramer-Wasserka
patent: 4660892 (1987-04-01), Demoulin
patent: 4691967 (1987-09-01), Schupphaus
patent: 4721341 (1988-01-01), Maschewski
patent: 4755002 (1988-07-01), Parrott

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