Patent ID: 7963573

Claim:
A locking device for a spagnolet mechanism ( 1 ), anchored in a door or window case ( 39 ), the spagnolet mechanism ( 1 ) comprises: a central adjusting mechanism ( 2 ); a first locking rod ( 7 ) and a second locking rod ( 7 ) both having one end coupled to the central adjusting mechanism ( 2 ) and extending in mutually opposite directions, and each of the locking rods ( 7 ) having a respective free end; a first frame lock ( 15 ) and a second frame lock ( 15 ) located on opposite sides of the central adjusting mechanism, substantially adjacent to a door or window frame ( 40 ), each of the first and the second frame locks ( 15 ) being separated from the central adjusting mechanism ( 2 ) by a length of the first and the second locking rods ( 7 ), and operatively connected respectively with the free end of either the first locking rod or the second locking rod ( 7 ); each of the first frame lock ( 15 ) and the second frame lock ( 15 ) comprising: a lock housing ( 16 ) having a first side and a second side, the free end of the locking rod ( 7 ) being connected to the frame lock ( 15 ) at the first side of the lock housing ( 16 ), the first side of the lock housing ( 16 ) being linearly aligned with and opposite from the second side of the lock housing ( 16 ) with the second side of the lock housing ( 16 ) being remote from the central adjusting mechanism ( 2 ); a locking bolt ( 42 ), pivotable by the locking rods around a revolving spindle ( 44 ); a connecting link ( 43 ) being pivotably connected, via a pivot joint ( 45 ), to the locking bolt ( 42 ), and the connecting link ( 43 ) being releasably connected, via a connection joint ( 46 ), to the respective locking rod, the locking bolt ( 42 ) is pivotally anchored within the lock housing ( 16 ) by said revolving spindle ( 44 ) and is displaceable into an exposed position such that the locking bolt ( 42 ) partially extends outside of the lock housing ( 16 ) from the second side of the lock housing ( 16 ), and the locking bolt ( 42 ), in an extreme pivotal position, is connectable with the connecting link ( 43 ) via the pivot joint ( 45 ) and the connecting link ( 43 ) is accommodated within the lock housing ( 16 ), the connection joint ( 46 ) is releasably connected to the free end of one of the first or the second locking rods which jointly, together with the central adjusting mechanism ( 2 ), prevents the locking bolt ( 42 ) from pivoting back to the extreme pivotal position when the locking bolt ( 42 ) is locked and partially extends outside of the lock housing ( 16 ) from the second side of the lock housing ( 16 ).