| 摘要 |
<p>An extension arm swivels on the fixed and wign frames, and slides along one, for moving a tilting window, esp. fan-light, it has a cutout for engagement by a rod-operated rolling lug. Part of the rod inside the fixed frame is highed ton one end, of a connectign fishpate which has its other end hinged to part of the rod inside the wing frame. The arm is a tilting arm on a vertical frame shank, with a guide piece for the rolling lug. A bolting lug is mounted, in the top wing frame shank area, moved by the rod and bolting on a closing plate on the adjacent blind frame shank.</p> |
