BOLT MECHANISM, AND SECURITY ENCLOSURE HAVING SUCH A BOLT MECHANISM

摘要

A bolt mechanism for the door (1) of a safe has bolts (11) which are thrown by a crank arm (3) turned by a spindle (2) connected to an external handle, the crank arm carrying a pin (7) which runs in a drive slot (8) in a bar (9) connected to the bolt strap (10). A plate (15) is carried by the bolt (13) of a lock (12) so that when the safe bolts (11) are thrown and the lock operated the plate (15) carries the crank pin (7) clear of the drive slot (8), the crank arm (3) being slidable transversely on the spindle for this purpose. This operation isolates the connecting bar (9) from the spindle to prevent the application of force to the boltwork through the spindle in the sense tending to withdraw the boltwork.