| 摘要 |
<p>AO-322S SPECTACLES HINGE A hinge for connecting a temple to a spectacles frame front. One component of the hinge includes a metal fastening plate with spaced laterally extending ears forming a pair of hinge leaves between which an insert of plastic material is fitted. The insert covers innermost facing surfaces of the metal ears and is itself provided with an ear which forms an intermediate non-metallic leaf of the hinge component. When leaves of the one hinge component are interfitted with leaves of an all metal second hinge component, the resulting plastic-to-metal bearing surfaces afford smooth pivoting action with provision for tightening against drop temple.</p> |
