| 摘要 |
Protective spectacles consisting of a front frame (1), having on its inside a lens-holding groove (4), two sidepieces (2) connected to the front frame (1) by means of four hinge-pins (5) located in the four outside corners, the said sidepieces (2) being fitted with a dovetail-groove having a series of holes (8); two flexible side-arms (3), each fitted with a pin (10) that fits selectively into the adjustment holes (8); and two segments (12) fitting into the groove (4) of the front frame (1), and shaped to fit into rim (4) and to accommodate lenses of smaller diameter. <IMAGE> |
