| 摘要 |
<p>In particular, but not solely relating to handled mortise blocks for doors as disclosed it relates in particular to locks having two handles. The movement of the bolt (2) from a lock to an unlock condition can, depending on the mechanism of the lock, be by one, both or neither handle when the locking mechanism (8) itself is in a locked condition. This invention seeks to provide a further lock which is capable of being handed selectively to allow one or other of the handles associated therewith to move the bolt (2) from the lock to the unlock condition. In such a lock there is at least one actuating (3), preferably two, capable of moving the block from its locking to unlocking condition wherein said locking mechanism (8) includes a member or assembly which is a captured member capable of being rotated such in one condition and when said locking member is in said locked condition it will prevent the actuator from moving the bolt from a locking to an unlocking condition in which in another condition and when said locking member is in its locked condition will prevent the other actuator from moving the bolt from its locking to unlocking condition.</p> |
