Patent
1983-10-04
1986-07-01
Punter, William H.
16223, 16364, 350315, G02B 700, E05D 1108, E05D 1500
Patent
active
045976430
ABSTRACT:
Apparatus is provided for attachment to a microscope which alternately positions a filter in alignment with the objective of the microscope and stowed along the side of the body of the microscope. A stationary post is screwed to an accessory fitting associated with the body of the microscope, and a filter holder, which includes a filter-retaining ring and an extending stem, is mounted for rotation from the end of the end of the post. To register the holder stabilized in its aligned and stowed positions, the stem rotates against a face of the post in which a groove is formed, and the stem is biased against the face by a spring so that it catches in the groove in either of the registered positions. The post is screwed to the fitting by means of a stud threaded at both ends, one end being insertable into the fitting opening and one end being insertable into an axial threaded bore of the post, and with the post in the correct rotational position, a set screw is tightened against the stud, fixing the rotational positions of the post and stud. This allows the post to be removed from and reattached to the fitting in an indexed rotational position which positions the filter holder, when in its aligned position relative to the post, directly below the objective. The filter is retained in the ring by a removable O-ring, whereby the filter is removable so that any one of a collection of filters may be retained in the ring.
REFERENCES:
patent: 1311185 (1919-07-01), Silverman
patent: 1754282 (1930-04-01), Owens
patent: 1970728 (1934-08-01), Bauersfeld
patent: 2418602 (1947-04-01), Richards
patent: 2537846 (1951-01-01), Munn
patent: 2544371 (1951-03-01), Weisek
patent: 3150460 (1964-09-01), Dees
patent: 3306633 (1967-02-01), Haake
Podvin T. Charles
Van Benschoten Peter J.
Punter William H.
The Micromanipulator Microscope Company, Inc.
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