| 摘要 |
<p>1295024 Spectacles MINE SAFETY APPLIANCES Co 19 April 1971 [4 March 1970] 23056/71 Heading G2J An adjustable length temple comprises a sleeve 3 having a rear end that is open and a front end formed for attachment to an eyeglass frame, and a top and a bottom and opposite sides; a headengageable temple member 4 having a front end portion fitting in the sleeve and slidable lengthwise therein, the front end of the member within the sleeve being provided with a longitudial slot 7 separating it into upper 8 and lower 9 prongs, one prong 9 being provided with a laterally projecting boss 11 adjacent its free end pressed tightly against the adjacent side of the sleeve, the other prong 8 being provided with a locking boss 10 adjacent its free end the wall of the sleeve beside the locking boss being provided with a row of longitudinally spaced recesses 13 for receiving the locking boss, the locking boss normally extending into one of these recesses and locking the member and sleeve together in telescoped relation. The sides of the prongs opposite to the bosses preferably converge towards the front of the temple member when it is outside the sleeve.</p> |
