Mineral cutting device

Details Mineral cutting device Mineral cutting device

1985-05-02

1987-03-24

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Cleansing fluid passage

299 17, E21C 3522, E21F 502

Patent

active

046520562

ABSTRACT:
A mineral cutting device comprises a plurality of replaceable picks (10, 10A-10G) and associated water conveying lances (20, 20A-20G), each lance being of flexible, tubular synthetic plastics material having a hollow, water-conveying interior and being contained, at least partially, within a bore (13, 13A, 13B) in the pick (10, 10A-10G) when the pick (10, 10A-10G) has been mounted on the device (1, 1A, 1B), to line the bore and prevent water pressure within the lance being effective on the pick, with a terminal end of each lance provided with a metallic nozzle secured in water sealing manner thereto and providing a water discharge orifice (23). The invention further includes a lance (20, 20A-20G) for use with the mineral cutting device defined above, and also a shank bore (13B) formed at least partially in a side (27) of the pick shank (12, 12A-12D), which, in use, is the compressive stress side, and/or with an inner bore end (15) intersected by a slot (42) provided in at least a portion of the shank (12D).

REFERENCES:
patent: 3747982 (1973-07-01), Agnew et al.
patent: 4219239 (1980-08-01), Weikert et al.
patent: 4280735 (1981-07-01), Lobbe

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