| 摘要 |
<p>A latch element 13 is mounted on sash 12 on a window and comprises an elongate block having a wedge shape nose 15 and the other part of the latch mechanism 16 comprises a latch member 17 which can be moved rectilinearly by operating handle 19 mounted on the outside of the frame 10 and which has a tongue 20 to engage member 17. The wedge shape nose 21 engages the nose 15 in the locking position.</p> |
