| 摘要 |
<p>A shoot bolt 10 is fitted to an edge 28 of a leaf 26 that is hinged to a frame 27 for opening and closing movement. When closed into the frame 27, the shoot bolt 10 extends from the sash 26 and engages in a keep 32 in the frame 27. The shoot bolt 10 includes projections 22 that engage the keep 32 if the sash 26 is forced out of the frame 27 to prevent the shoot bolt 10 being forced out of the keep 32.</p> |
