Magnifying lens device

Details Magnifying lens device Magnifying lens device

1975-09-15

1977-07-26

Evans, F. L.

350247, G02B 702

Patent

active

040379400

ABSTRACT:
A magnifying lens assembly consists of a pair of generally rectangular superposed lens members which are housed in a generally rectangular casing and may be selectively withdrawn therefrom for use. A spring member is housed within the casing at each side of the lens members and consists of an abutment member at the front end thereof which is fixed in the open end of the casing and has a pair of spring leaves extending rearwardly therefrom, one for each lens member. The spring leaves are bowed toward the lens members to resiliently center the same in alignment with the casing and the abutment members define a guideway for the lens members at the open end of the casing.

REFERENCES:
patent: 873914 (1907-12-01), Vikoren
patent: 2432760 (1947-12-01), Higbee
patent: 2534100 (1950-12-01), Baumgartner
patent: 2746347 (1956-05-01), Gaire
patent: 3409347 (1968-11-01), Vogel

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