Mount with lenses, supplementary, to apply on the glasses of distant vision and get the effects of bifocal lenses. (Machine-translation by Google Translate, not legally binding)

摘要

A frame with lenses, supplementary, to fit over the glasses of distant vision and achieve the effects of bifocal lenses, characterized by the fact that it consists of a pair of rings or frames for lenses, joined by a flexible and elastic bridge, in each of which a close viewing lens means is adjusted whose exact position is determined by a curved wire, adapted the bottom of the free part of the inner adjustment slot of each frame, and bent at its ends to form a stop with the half lens; each frame being provided with two or more grapillas to grip the frame to the frames of the ordinary spectacles on which it must overlap. (Machine-translation by Google Translate, not legally binding)