Bag frame catch lock

Claim 1

IN A CATCH AND LOCK MECHANISM FOR A HINGED PAIR OF BAG FRAMES HAVING ALIGNED LATCH APERTURES INCLUDING A BASE PLATE MEMBER TO BE SECURED TO ONE OF THE BAG FRAMES AND AN ELONGATED CATCH PLATE MEMBER HINGEDLY COUPLED AT ONE END OF SAID BASE PLATE MEMBER FOR MOVEMENT BETWEEN AN OPEN AND A CLOSED POSITION RELATIVE THERETO, SAID CATCH PLATE MEMBER HAVING A CATCH TONGUE DEPENDING THEREFROM EXTENDING THROUGH SAID BASE PLATE MEMBER TO BE SELECTIVELY PROJECTED THROUGH SAID BAG FRAME APERTURES AND HAVING A CIRCULAR OPENING ADJACENT THE END THEREOF REMOTE FROM THE HINGED END, SAID BASE PLATE MEMBER HAVING A KEEPER APERTURE ALIGNED WITH SAID CIRCULAR OPENING INCLUDING A RADIALLY ENLARGED SECTOR AT A SELECTED UNLOCKING ANGULAR POSITION; THE IMPROVEMENT COMPRISING A ROTATABLE KEY LOCK BOLT MEMBER FORMED OF AN INTEGRAL STAMPING OF SHEET METAL HAVING AN ENLARGED HEAD OF CIRCULAR DISC-LIKE CONFIGURATION SEATED IN THE CIRCULAR OPENING OF SAID CATCH PLATE MEMBER FOR ROTATION ABOUT THE CENTER AXIS OF SAID CIRCULAR OPENING AND AN INTEGRAL DEPENDANT BOLT PORTION OF UPWARDLY OPENING CHANNEL-SHAPED CONFIGURATION DEPENDING FROM SAID BODY PORTION AND DEFINING A CHANNEL HAVING PARALLEL SIDES FOR RECEIVING AND EMBRACING THE FREE END PORTION OF A KEY BIT TO EFFECT TURNING OF THE BOLT MEMBER ABOUT SAID CENTER AXIS BETWEEN ANGULARLY SPACED LOCKING AND UNLOCKING POSITIONS RESPONSIVE TO ROTATION OF THE KEY, SAID DEPENDANT BOLT PORTION HAVING A LATERALLY PROJECTING NOSE AT THE LOWER END THEREOF ADJACENT THE WEB OF SAID CHANNEL TO PASS THROUGH SAID KEEPER APERTURE WHEN ALIGNED WITH THE RADIALLY ENLARGED SECTOR THEREOF AND UNDERLIE PORTIONS OF THE BASE PLATE MEMBER ANGULARLY SPACED FROM SAID UNLOCKING POSITION, AND SAID BOLT PORTION HAVING A CONSTRICTED PORTION ABOVE SAID NOSE DIMENSIONED TO BE ACCOMMODATED FOR ROTATION IN SAID KEEPER APERTURE.