Door locking means

Claim 1

DOOR LOCKING MEANS COMPRISING THE COMBINATION OF: (A) A COMBINATION LOCK HAVING DECODABLE MECHANISM AND HAVING (1) A LATCH OPERATING MEMBER, (2) AND A NUMBER OF INDEXING ELEMENTS, WHICH MUST BE MANUALLY ACTUATED IN PREDETERMINED SEQUENCE IN ORDER TO DECODE SAID MECHANISM AND THEREBY FREE THE LATCH OPERATING MEMBER FOR MOVEMENT IN ONE DIRECTION TO A DOOR RELEASING POSITION; (B) AND A LATCH MECHANISM COOPERABLE WITH SAID COMBINATION LOCK AND COMPRISING (1) A LATCH BOLT BIASED TO A PROJECTED POSITION AND MOVABLE AGAINST ITS BIAS TO A RETRACTED POSITION, (2) AN OPERATING SHAFT DRIVINGLY CONNNECTED WITH THE LATCH OPERATING MEMBER TO ROTATE IN ONE DIRECTION TO CONSEQUENCE OF MOVEMENT OF THE LATCH OPERATING MEMBER TO ITS DOOR RELEASING POSITION, (3) A PIVOTED LATCH RETRACTING LEVER HAVING A PART THEREON WHICH BLOCKS RETRACTING MOVEMENT OF THE LATCH BOLT EXCEPT WHEN THE LEVER IS SWUNG IN ONE DIRECTION ABOUT IS PIVOT OUT OF A NORMAL POSITION, (4) A DRIVING ABUTMENT ON THE LEVER ENGAGEABLE WITH THE BOLT DURING PIVOTAL MOVEMENT OF THE LEVER IN SAID ONE DIRECTION TO MOVE THE LATCH BOLT TO ITS RETRACTED POSITION, (5) AND MEANS PROVIDING A MOTION TRANSMITTING CONNECTION BETWEEN SAID SHAFT AND LEVER OPERABLE TO PIVOT THE LEVER IN SAID ONE DIRECTION OUT OF ITS NORMAL POSITION IN CONSEQUENCE OF MOVEMENT OF THE LATCH OPERATING MEMBER TO IS DOOR RELEASING POSITION.