Device for taking bottom soil samples from deep water basins

Details Device for taking bottom soil samples from deep water basins Device for taking bottom soil samples from deep water basins

1976-07-16

1978-09-26

Crowder, Clifford D.

Measuring and testing

Measuring vessel

37 71, 37186, G01N 100, E02F 344, B66C 302

Patent

active

041160690

ABSTRACT:
The device comprises two independently operating systems which are separated from each other in kinematical and actuating respects, viz, a system for closing the jaws of the sample-taking grab and a system for dropping the ballast weights. Said system for dropping the ballast weights is based on the principle of unstable fixing of the weights, the weights being detached from the sampling device after the leader rod strikes the bottom of the basin. Various embodiments of the grab-closing system incorporate, for example, a pulley block and cable mechanism intended first to close the grab jaws, and then to lift out the entire apparatus by taking up the free length of the cable.

REFERENCES:
patent: 2798378 (1957-07-01), Del Raso et al.
patent: 3509772 (1970-05-01), Blair
patent: 3572129 (1971-03-01), Walthier et al.
patent: 3996678 (1976-12-01), Amann et al.

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