Rotary leveling base platform

Details Rotary leveling base platform Rotary leveling base platform

1976-11-03

1978-05-09

Staab, Lawrence J.

Supports

Stand

To hold a particular article

248178, F16M 1108

Patent

active

040882918

ABSTRACT:
A leveling apparatus for the precise level adjustment of a scientific instrument. A base member is provided having a hollow cylindrical shape. A table for supporting the instrument rests on the base and has a shaft portion extending below the table. The upper portion of the shaft fits tightly into the hollow portion of the base member whereas the lower portion of the shaft is machined to fit loosely. The lower portion of the shaft is provided with a groove cut around the circumference thereof. Adjusting screws are threaded through the hollow cylindrical portion and are adapted to enter the groove. By adjusting the screws, the lower portion of the shaft is moved in a vertical plane since the shaft is loosely fitted into the cylinder. The upper portion of the shaft which is tightly fitted into the upper end of the cylinder causes the cylinder to deform slightly providing a fulcrum point which allows the table to be leveled in response to the adjustment of the adjusting screws.

REFERENCES:
patent: 399345 (1889-03-01), Poehlman
patent: 973558 (1910-10-01), Pierce
patent: 1151549 (1915-08-01), Schade
patent: 3020016 (1962-02-01), Kingsbury

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