Prowler proof latch means

Claim 1

MECHANISM FOR HOLDING A PIVOTALLY MOUNTED DOOR IN THE CLOSED POSITION RELATIVE TO AN ADJACENT DOOR JAMB, SAID MECHANISM COMPRISING: LATCH MEANS SUPPORTED ON SAID DOOR PROXIMATE AN EDGE THEREOF, SAID LATCH MEANS INCLUDING AN ELONGATE BOLT HAVING A DISTAL END PROJECTING FROM SAID DOOR EDGE AND TRANSLATIONALLY MOVABLE TO EXTEND INTO A CAVITY IN SAID DOOR JAMB, SAID LATCH MEANS FURTHER INCLUDING AT LEAST ONE DOORKNOB OPERATIVELY CONNECTED TO WITHDRAW SAID BOLT FROM SAID CAVITY, A SHALLOW GROOVE IN SAID BOLT PROXIMATE SAID DISTAL END THEREOF, A COVERPLATE MOUNTED ON SAID DOOR EDGE BY AT LEAST ONE MOUNTING SCREW, SAID BOLT EXTENDING THROUGH SAID COVERPLATE, INDEPENDENT MEANS OPERATIVELY ELATED TO SAID BOLT AND MOUNTED ON SAID DOOR FOR SELECTIVELY PREVENTING THE WITHDRAWAL OF SAID BOLT FROM SAID CAVITY BY SAID DOORKNOB, SAID INDEPENDENT MEANS COMPRISING A ROTATABLE ELEMENT OF THIN-SHEET FORM PIVOTALLY SUPPORTED ON SAID ONE SCREW FOR LIMITED PIVOTAL MOVEMENT IN TWO OPPOSITE DIRECTIONS ABOUT A PIVOT CENTER THROUGH SAID ONE SCREW, SAID ROTATABLE ELEMENT HAVING AT LEAST ONE EDGE ADAPTED TO OPERATIVELY ENGAGE SAID SHALLOW GROOVE AT ONE LIMIT OF SAID PIVOTAL MOVEMENT, ELONGATE WEDGE MEANS SLIDABLY MOVABLE WITH RESPECT TO SAID DOOR AND OPERATIVELY RELATED TO SAID ROTATABLE ELEMENT FOR SELECTIVELY PREVENTING WITHDRAWAL OF SAID ONE EDGE FROM SAID SHALLOW GROOVE, AND FOR SELECTIVELY CAUSING WITHDRAWAL OF SAID ONE EDGE FROM SAID SHALLOW GROOVE UPON THE APPLICATION OF FORCE TO CAUSE SAID SLIDABLE MOVEMENT OF SAID WEDGE MEANS, SAID ELONGATE WEDGE MEANS INCLUDING AT LEAST ONE SLOPING CAM SURFACE THEREON, AND ADJUSTABLY POSITIONABLE BEARING CONTACT MEANS SECURED TO SAID ROTATABLE ELEMENT OPERATIVELY RELATED TO SAID SLIDABLE WEDGE MEANS SO THAT SLIDING MOVEMENT OF SAID SLIDABLE WEDGE MEANS CAUSES CONTACT BETWEEN SAID SLOPING CAM SURFACE AND SAID BEARING CONTACT MEANS TO ROTATE SAID ROTATABLE ELEMENT AND TO SELECTIVELY HOLD SAID ROTATABLE ELEMENT IN SAID POSITION OF OPERATIVE ENGAGEMENT BETWEEN SAID EDGE AND SAID GROOVE, SAID BEARING CONTACT MEANS BEING ADJUSTABLY POSITIONABLE WITH RESPECT TO SAID SLOPING CAM SURFACE FOR ESTABLISHING SAID CONTACT BETWEEN SAID CONTACT MEANS AND SAID CAM SURFACE.