Adjustable spectacles

Details Adjustable spectacles Adjustable spectacles

1979-05-21

1982-12-14

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Split rim mounting

351 55, 351 57, 351 58, G02C 706, G02C 708, G02C 108

Patent

active

043635377

ABSTRACT:
Adjustable bifocal spectacles having at least one pair of lenses mounted in an upper frame vertically movable in relation to a lower frame so that the focal length may be changed by raising and lowering a pair of lenses in the sight line of the viewer. Means are provided for applying a pressure to the upper and lower frames either at opposite ends of the frames or at the nose support and bridge to raise or lower the upper frame in relation to the lower frame, the pressure being symmetrical with respect to the nose and bridge. Vertical movement of the lenses is accomplished by actuating a mechanism at one side or at opposite sides of the lens frame, either mounted directly to the lens frame or mounted in modified temples so that the spectacles may be adjusted without placing the hand in front of the face.

REFERENCES:
patent: 1102909 (1914-07-01), Hanna
patent: 2057287 (1936-10-01), Bailey
patent: 2842029 (1958-07-01), Roth
patent: 2921500 (1960-01-01), Gell
patent: 3365263 (1968-01-01), Allen
patent: 3446548 (1969-05-01), Rummel et al.
patent: 3698801 (1972-10-01), Masucci

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