Security receptacles and screen units therefor.

摘要

A night deposit safe (A) has a grille (C) fitted behind its main door (D). In the event of an attack with explosives introduced into the safe through the deposit trap the explosion pressure wave is transmitted through the grille to the main door (D) so that even if the pressure force is sufficient to dislodge the latter the integrity of the grille is retained and acts as an impediment to the ready removal of the safe's contents. The grille (C) has a hinged centre section (5) to permit bank staff to remove deposits during the working day, this section normally only being latched; however, a locking bolt (24) is released by a glass tube (31) to lock the grille centre section (5) closed when the tube (31) is shattered by explosive force. The grille (C) can be embodied in a lining (B) for retro-fitting to an existing safe (A); this form of construction avoids problems in mounting a grille directly to the internal finishing skin of the receptacle.