Soil compactor

Details Soil compactor Soil compactor

1975-11-07

1976-12-21

Gill, James J.

Measuring and testing

Testing by impact or shock

Specimen impactor detail

73 88E, 73432R, G01N 128, G01N 3324

Patent

active

039980901

ABSTRACT:
A soil compactor for laboratory use to systematically and controllably coct specimens of soil and earth-rock mixture materials. The raising of a drop hammer after each strike to a pre-selected height is accomplished automatically by the use of a pneumatic cylinder in conjunction with sensing valves. A counter and deactivation valve are also provided so that the system will automatically shut off after the hammer drops a pre-determined number of times. Uniform compaction of each specimen is ensured by automatically rotating the specimen a pre-selected number of degrees after each strike by the hammer. The compactor is also vertically and horizontally adjustable so that specimens of various heights and widths can be accommodated.

REFERENCES:
patent: 921287 (1909-05-01), Schmidt
patent: 2482949 (1949-09-01), Jankovich
patent: 2531388 (1950-11-01), Black
patent: 3001393 (1961-09-01), Greayer
patent: 3566668 (1971-03-01), Browning et al.

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