| 摘要 |
<p>The outside and inside levers are mounted on a shared continuous spindle on the appropriate sides of the doorleaf. The outside one comprises a bottom activating part, and top triggering and locking part. When vertical, with the door closed, the locking part is in locking engagement with the triggering and locking piece on the frame exterior. It is releasable by carrying out a downwards swivelling movement by this piece, to open the leaf. The inside lever is arrestable in relation to a swivel movement on the inside of the leaf, and when arresting action is released it is coupled to the outside lever for opening movement.</p> |
