| 摘要 |
<p>The lock comprises a lock housing mounted on the edge (P) of the door or window, with at least one latch (3) that is firmly attached to the frame (2) protruding from it, the interior of said frame providing a series of wards (4) superposed in an alternating sequence, so that the head part of one is on the top side and that of the next one is inverted, the wards being pushed by two levers (16-16'), an upper and a lower one, to arrange them so that their central window (7) coincides with the slot (14) through which the key (10) is introduced. To open the lock no turning of the key (10) is required and, instead, a doorknob (24) is operated, causing the rotation of a freewheel (20) connected to the frame (2) by way of a connecting rod (21), sliding said frame horizontally until the latch (3) distances itself from the edge of the door edge (P), thus opening the door. To close the door it is sufficient to turn the doorknob (24) in opposite direction, without introducing the key (10).</p> |
