| 摘要 |
<p>Disclosed is a versatile mortice lock with night latch. The mortice lock comprises a lock body affixed to a facing edge portion of the door and a box keep adapted to be o fixed to a door jamb of the door. The lock body comprises a lock base plate, a support plate, a latch bolt, a bearing latch bolt and a door safety lever. The latch bolt and the bearing latch bolt are operatively connected to each other such that the bearing latch bolt assume a first extended position or a first retracted position corresponding to which the latch bolt assumes a second retracted position or a second extended position, respectively. The box keep comprises a box base plate, a side strip and a curled strip. A handle is operatively coupled to the latch bolt. Also, an alarm is provided that is activated upon the lock assuming the unlocked position.</p> |
