Theodolite center mounting means

Details Theodolite center mounting means Theodolite center mounting means

1979-08-20

1981-03-10

McCall, James T.

Supports

Stand

To hold a particular article

248179, 248346, 248550, F16M 1112

Patent

active

042549256

ABSTRACT:
Means for conjointly mounting center members of dissimilar metals for stable concentric rotation about a theodolite spindle comprises a plurality of radially-extending guide grooves on one of the members disposed regularly about the axis of the spindle, and a like plurality of support elements affixed to another of the center members and similarly disposed about the spindle axis to seat respectively in the guide grooves. The support elements being thus limited by the guide grooves to precise radial movement, any dissimilar thermal expansions of the center members result in relative movement between them which is concentric with the spindle axis.

REFERENCES:
patent: 1948508 (1934-02-01), Carleton
patent: 3823772 (1974-07-01), Lavering et al.
patent: 3931947 (1976-01-01), Tagnon
patent: 3937433 (1976-02-01), Portaleoni
patent: 4157802 (1979-01-01), May, Jr.

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