Device for lens bows of eyeglasses

Details Device for lens bows of eyeglasses Device for lens bows of eyeglasses

1980-11-10

1984-04-17

Evans, F. L.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Split rim mounting

351 90, G02C 108

Patent

active

044430736

ABSTRACT:
A lens bow has a first area with a through hole oriented approximately in the direction of mechanical tension in the bow when it holds a lens set therein, and a second area with an inside threaded sleeve aligned with the through hole. The first and second areas have opposed faces. A screw has a head which rests outside the first area and which is tightened into the inside threaded sleeve to bring the first and second areas towards each other to hold the lens in the lens bow. The shortest distance between the opposed faces are larger in the untightened state and smaller when the screw is tightened to bring the bow into a holding condition about the circumference of a lens set therein.

REFERENCES:
patent: 362377 (1887-05-01), Hammel
patent: 1580117 (1926-04-01), Clulee
patent: 1800263 (1931-04-01), Nerney
patent: 1800279 (1931-04-01), Boutelle
patent: 3941461 (1976-03-01), Lambert
patent: 4243305 (1981-01-01), Elder

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