Apparatus for equipping transport vehicles with temporary door closures

Claim 1

THE COMBINATION WITH A TRANSPORT VEHICLE HAVING AN INNER WALL SURFACE INTERRUPTED BY A DOOR OPENING, OF A PAIR OF SUPPORT BRACKET ASSEMBLIES ADAPTED TO HOLD A RETAINING BAR IN HORIZONTAL POSITION ACROSS SAID DOOR OPENING AND AGAINST THE INSIDE WALL OF THE VEHICLE, EACH SAID BRACKET ASSEMBLY INCLUDING A BASE MEMBER MOUNTED WITHIN A RECESS IN THE WALL SURFACE TO ONE SIDE OF THE OPENING, A RETRACTABLE BAR HOLDING MEMBER INCLUDING A VERTICALLY DISPOSED OUTER BAR HOLDING FLANGE, PIVOT MEANS CONNECTING SAID HOLDING MEMBER WITH SAID BASE MEMBER ON A VERTICAL PIVOT AXIS WITHIN THE RECESS, SAID AXIS BEING SO LOCATED AS TO PROVIDE FOR SWINGING MOVEMENT OF SAID HOLDING MEMBER BETWEEN A FIRST POSITION IN WHICH SAID HOLDING MEMBER, INCLUDING SAID HOLDING FLANGE, IS SUBSTANTIALLY WHOLLY WITHIN THE RECESS AND A SECOND POSITION IN WHICH THE HOLDING MEMBER PROJECTS FROM THE RECESS WITH THE HOLDING FLANGE SPACED INWARDLY OF THE PLANE OF THE WALL SURFACE THUS TO PROVIDE A GAP BETWEEN THE FLANGE AND THE WALL PLANE IN WHICH A PORTION OF THE BAR CAN BE INSERTED, SAID PIVOT MEANS SO CONSTRUCTED AS TO PERMIT LIMITED DISPLACEMENT OF SAID HOLDING MEMBER IN A DIRECTION PARALLEL TO THE PIVOT AXIS, AND A STOP LUG INTERPOSED IN THE PATH OF PIVOTAL MOVEMENT OF SAID HOLDING MEMBER BETWEEN SAID FIRST AND SECOND POSITIONS, SAID LUG OF A LENGTH THAT IT CAN BE CLEARED BY THE DISPLACEMENT OF SAID HOLDING MEMBER IN A DIRECTION PARALLEL TO SAID PIVOT AXIS.