Lever lock for doors

Claim 1

IN A LOCK FOR DOORS INCLUDING A HOUSING, A FACE PLATE AND A LOCK CYLINDER WITH ROTATABLE CAM; THE IMPROVEMENT COMPRISING AN ELONGATED RECIPROCAL DEAD BOLT GUIDABLY MOUNTED WITHIN THE HOUSING HAVING AN INOPERATIVE POSITION, A LOCKING POSITION, AND AN INTERMEDIATE CONTROL POSITION, MEANS ON SAID DEAD BOLT OPERATIVELY ENGAGED BY SAID CYLINDER CAM ON ROTATION THEREOF FOR MOVEMENT RELATIVE TO THE HOUSING, CAM MEANS ON SAID DEAD BOLT, AN ELONGATED RECIPROCAL LATCH BOLT GUIDABLY MOUNTED WITHIN THE HOUSING HAVING A NORMAL SPRING-BIASED OPERATIVE POSITION AND A RETRACTED POSITION, INNER AND OUTER MANUALLY ROTATABLE SPRING-BIASED CONTROL HUBS JOURNALED WITHIN THE HOUSING, THE INNER HUB CONTINUOUSLY IN OPERATIVE ENGAGEMENT WITH THE LATCH BOLT FOR RETRACTING THE SAME, LATCH BOLT ENGAGING MEANS MOVABLY MOUNTED ON THE LATCH BOLT AND HAVING A CONTROL MEANS MOVABLE INTO AND OUT OF ENGAGEMENT WITH THE OUTER HUB ON MOVEMENT OF SAID LATCH BOLT ENGAGING MEANS, RESILIENT MEANS INTERPOSED BETWEEN SAID LATCH BOLT ENGAGING MEANS AND SAID CAM MEANS ON THE DEAD BOLT, SAID CAM MEANS RECEIVING SAID RESILIENT MEANS WHEN SAID DEAD BOLT IS IN ITS INOPERATIVE POSITION WITH THE CONTROL MEANS ON SAID LATCH BOLT ENGAGING MEANS OPERATIVELY ENGAGING THE OUTER HUB, SAID DEAD BOLT CAM MEANS OPERATIVELY DEPRESSING SAID RESILIENT MEANS TO DISENGAGE SAID LATCH BOLT CONTROL MEANS FROM THE OUTER HUB, WHEN SAID SAID DEAD BOLT IS IN LOCKING AND CONTROL POSITIONS.