Mining or in situ disintegration of hard material – With separation of materials – Material mined or excavated underwater
Patent
1989-05-08
1989-12-26
Reese, Randolph A.
Mining or in situ disintegration of hard material
With separation of materials
Material mined or excavated underwater
37 61, 324326, 15339, E02F 700, E02F 394, G01V 308
Patent
active
048893919
ABSTRACT:
A hand-held suction dredge and metal detctor is supported on a vertically held hollow pipe. A metal detector having a central aperture is slidably supported on the pipe with the lower pipe end extending therethrough for receiving and transmitting at least partially fluid material. A spring urges the metal detector toward an initial position at the lower end of said pipe. A fluid jet is positioned in the pipe directed upward therein. A pump supported on the pipe and connected to the fluid jet circulate fluid to create a sucton in the pipe to draw at least partially fluid material through the pipe to discharge the same from the upper end thereof. A perforate basket on the upper end of the pipe has openings sized to permit discharge of fluid material and retain larger metal solids therein. The pipe, in use, supports the metal detector adjacent to a region being investigated for dredging material by operation of the pump. A motor supported on the pipe operates the pump. The dredge and detector are constructed to locate metal objects in sand or loose soil, or underwater, and the pump is a high capacity air blower or water pump, and the jet is of a size and shape to induce suction through the pipe on circulation of air or water therethrough. Circularly extending trays in the basket are positioned to catch and retain solid metal objects drawn through said pipe while allowing fluid or particulate material to flow out through the openings in the basket.
REFERENCES:
patent: 861859 (1907-07-01), Johnstone
patent: 2028580 (1936-01-01), Yedd
patent: 3964123 (1976-06-01), Pettersson
patent: 4289355 (1981-09-01), Rose
patent: 4352251 (1982-10-01), Sloan
patent: 4359686 (1982-11-01), Wherry
patent: 4499713 (1985-02-01), Stone
Mosely Neal J.
Olsen Arlen L.
Reese Randolph A.
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