Measuring and testing – Meteorology – Electric disturbance
Patent
1980-08-26
1982-08-24
Myracle, Jerry W.
Measuring and testing
Meteorology
Electric disturbance
7386452, G01D 2100
Patent
active
043454615
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to self-contained technical means for taking spot samples of bedrock from the bottom of oceans or other deep-water basins and more specifically to an apparatus for taking bedrock samples from the bottom of deep-water basins.
The present invention is particularly useful for geological exploration, for hydrographic and oceanological researches.
DESCRIPTION OF THE PRIOR ART
At present known in the art are apparatuses for taking bedrock samples from the bottom of deep-water basins, such as dredges of various constructions. (Cf. Oceanological Encyclopaedia, 1974, pp. 292-293 /in Russian/).
Such an apparatus generally comprises a heavy tube or bucket provided with a net-like pocket to collect and keep chips of bedrock, and dragged over the bottom of a water basin being explored with the help of a cable secured on a ship.
They operate on the principle of taking or detaching rock fragments from a bedrock in the region of bedrock exposure on the bottom of deep-water basins.
However, raising of a bedrock sample from a water basin bottom is a very complicated operation. Usually an apparatus for taking bedrock samples is towed over the bottom in order to chip off a sample. Very often such attempts end in failure because of a broken cable or dredge and also because it is not always possible to detach a sample from the body of rock. Moreover, when employing such an apparatus, the exact fixing of the place of taking the sample is impossible since it is impossible to determine the location of the apparatus at the moment of taking the sample.
Also known in the art is a self-contained apparatus for taking sedimentary rock samples from the bottom of deep-water basins in the form of a free-falling sampler which is used to take sedimentary rock samples when carrying out industrial prospecting of deep-water deposits of ferromanganesia concretions of the ocean bed (cf. USSR Inventor's Certificate No. 566,162, Cl. G 01 N1/10, published in Journal of Discoveries, Inventions, Industrial Designs and Trademarks No. 27, 1977). This apparatus is essentially the closest prior art device for our invention.
This known apparatus comprises a frame with a float, containers with ballast weights, a working member in the form of a grab bucket, and a ballast dropping means.
The apparatus operates as follows:
On being dropped from a tender ship the apparatus due to negative buoyancy created by droppable ballast weights sinks.
When the apparatus comes in contact with the bottom of a water basin being explored, the ballast dropping means is actuated and the working member in the form of the grab bucket also operates and takes a sample. The ballast weights dropped, the apparatus for taking sedimentary rock samples attains positive buoyancy and emerges to the water basin surface.
Due to making a series of drops of such apparatuses, samples are periodically taken from the explored water basin bottom, thereby facilitating reconnaissance of deposits on the ocean bed.
However, such apparatuses can only be used for taking samples of soft and loose sedimentary deposits. They cannot be used for taking samples of compact bedrock.
SUMMARY OF THE INVENTION
The invention is essentially aimed at providing an apparatus for taking samples from the bottom of deep-water basins in which a working member and its structural elements would be made and interconnected so as to ensure taking a sample in a predetermined point, to accomplish separating, catching and bringing the sample to the surface and to guarantee the possibility of repeated use of the apparatus.
This is attained by an apparatus for taking bedrock samples from the bottom of deep-water basins incorporating a float with a rod and supporting frame, containers with ballast weights, a device for dropping ballast weights and a working member. In accordance with the present invention, the working member comprises a split casing having an open bottom and accommodating a shell destroyed by the action of an initiating device at the moment the working membe
REFERENCES:
patent: 3078931 (1963-02-01), Moore
patent: 3345879 (1967-10-01), Nasu et al.
patent: 3593533 (1971-07-01), Washington
patent: 4019380 (1977-04-01), Raymond
patent: 4116069 (1978-09-01), Lezgintsev
Oceanological Encyclopaedia pp. 292-293 and translation USSR.
Belyavsky Alexandr S.
Garbuz Evgeny I.
Glukhikh Rudolf G.
Kontar Evgeny A.
Kuznetsov Alexei N.
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