Cutting devices for mining and tunnelling machines

Details Cutting devices for mining and tunnelling machines Cutting devices for mining and tunnelling machines

1982-08-03

1984-03-20

Purser, Ernest R.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Cleansing fluid passage

299 12, 299 17, 175339, 175393, 239587, 239557, 239559, E21C 3522

Patent

active

044377088

ABSTRACT:
A cutting device for a mining or tunnelling machine takes the form of a roller with cutter bits which rotates at the end of a movable arm as is known. Grooves in the roller receive plate-like components which support water spray nozzles radially within the extremities of the cutter bits. The support components are stationary but are adjustable about the axis of rotation of the roller to bring the nozzles into the appropriate location during operation.

REFERENCES:
patent: 2693950 (1954-11-01), Calder
patent: 3374033 (1968-03-01), Arentzen
patent: 4174759 (1979-11-01), Arbuckle
patent: 4186971 (1980-02-01), Gebetsroither et al.
patent: 4296824 (1981-10-01), Kennington
patent: 4375242 (1983-03-01), Galle

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