Panic exit lock

Claim 1

A LOCK MECHANISM FOR USE ON A PANIC DOOR ADAPTER TO BE MOUNTED IN A DOOR FRAME COMPRISING A PANIC BAR, MEANS PIVOTALLY ATTACHING SAID PANIC BAR TO SAID DOOR AND BIASING A PORTION OF SAID BAR OUTWARDLY AWAY FROM SAID DOOR, LATCHES MOUNTED ON THE DOOR AND NORMALLY CONDITIONED WHEN THE DOOR IS CLOSED FOR LOCKING SAID DOOR TO SAID DOOR FARME AND ADAPTED IN AN ALTERNATIVE CONDITION TO FREE SAID DOOR WHEN CONTROL ELEMENTS CONNECTED THERETO ARE MOVED IN ONE DIRECTION, A SLIDE ADAPTED TO BE OPERATED IN A CERTAIN DIRECTION BY SAID PANIC BAR WHEN SAID PORTION IS DEPRESSED AND CONNECTED TO MOVE SAID CONTROL ELEMENTS IN SAID ONE DIRECTION AWAY FROM SAID NORMAL CONDITION TO FREE SAID DOOR WHEN SAID SLIDE, A MOVABLE RACK CARRIED ADAJACENT SAID SLIDE, A PINION MESHED WITH SAID RACK, CYLINDER LOCK MEANS HAVING A CERTAIN ANGULAR POSITION AT WHICH A KEY IS INSERTABLE AND REMOVABLE, MEANS CONNECTING SAID CYLINDER LOCK MEANS TO SAID PINION FOR ROTATING SAID PINION TO MOVE SAID RACK BACK AND FORTH IN AN ENDWISE DIRECTION DEPENDING UPON THE DIRECTION OF ROTATION OF SAID CYLINDER LOCK, MEANS ON SAID RACK FOR ENGAGING THE ELEMENT MOVABLE WITH SAID SLIDE AND OPERATING SAID SLIDE IN SAID CERTAIN DIRECTION TO FREE SAID DOOR IN RESPONSE TO ROTATION OF SAID CYLINDER LOCK IN ONE DIRECTION TO SAID CERTAIN ANGULAR POSITION, AND ROTATION OF SAID CYLINDER LOCK IN THE OPPOSITE DIRECTION BACK TO THE SAME SAID CERTAIN ANGULAR POSITION MOVING SAID RACK IN THE OPPOSITE DIRECTION TO FREE SAID SLIDE.