GB190613405A - Improvements in Fastenings for Doors. - Google Patents

Abstract

13,405. Jones, T. June 11. Locks, key; keyholes, obstructing; latches.- Relates to a door lock especially applicable to hotel bedroom doors, which is operable from inside by a handle and from outside by a key, provision being made for obstructing the keyhole from the inside, and for the use of a master-key for unlocking, when the door is locked from the inside, and for locking from the outside so that the lock is inoperable from the inside. The main latch bolt a is operable from within by means of a knob on the follower spindle d, and from the outside by a key inserted through the keyhole i to operate the sliding bolt e which bears against the tail end a<2> of the bolt a, By means of a knob h<1> on the inside, the snib-bolt h may be shot, thereby closing the keyhole i by means of the plate h<2> secured thereto, and locking the door against operation from. outside except by the master-key inserted through the keyhole j, which can operate the bolt e to withdraw the main bolt and by reason of the engagement of the projections a<5>, h<3> withdraw the bolt h at the same time. The master-key can also be used to shoot the bolt e to the right, thereby blocking the main bolt a and at the same time by the projecting finger e<6> to project the bolt h into the staple and close the keyhole i, in which case the door can only be opened by the master-key from the outside.