| 摘要 |
<p>The door case (2) has a base piece (3) fastened to it, and a space-retainer (4), with openings in it for the setting, is hinged to this. A bearing block (6), fastened to the window or door frame (5), bears a swivelling lever (7), with a stop member (8) for anchoring in these openings. The block can have a fishplate, with a hole, and the lever arm, with a hole which is flush with this in the stop position. A wide range of adjustment between almost closed and wide open settings is feasible.</p> |
