Container hold down bracket arrangement

Claim 1

A CONTAINER HOLD DOWN BRACKET ARRANGEMENT FOR INDEXING AND LATCHING A CONTAINER ON THE FLOOR OF A RAILWAY FLAT CAR HAVING A SIDE SILL INCLUDING AN UPSTANDING WEB AND A INWARDLY PROJECTING SUBSTANTIALLY HORIZONTAL WEB SPACED BELOW SAID FLOOR, SAID CONTAINER HOLD DOWN BRACKET ARRANGEMENT COMPRISING A SUBSTANTIALLY VERTICAL RIGHT ANGULAR CORNER ENGAGING MEANS ADAPTED TO ENGAGE THE LOWER CORNER OF A CONTAINER, HORIZONTAL BASE MEANS SUPPORTING SAID CORNER ENGAGING MEANS ADAPTED TO REST ON THE FLOOR OF SAID FLAT CAR OVERLYING SAID SIDE SILL IN AN OPERATIVE CONTAINER ENGAGING POSITION,, HINGE LEAF MEANS EXTENDING DOWNWARDLY FROM SAID BASE MEANS IN SUBSTANTIAL PARALLELISM WITH SAID UPSTANDING WEB OF SAID SIDE SILL WHEN SAID BASE MEANS IS IN SAID OPERATIVE CONTAINER ENGAGING POSITION, HINGE PLATE MEANS FORMED COMPLEMENTARY TO SAID SIDE SILL, PIVOT MEANS PIVOTALLY CONNECTING THE LOWER END OF SAID HINGE LEAF MEANS TO SAID BRACKET MEANS AT THE JUNCTURE OF SAID UPSTANDING PORTION WITH SAID HORIZONTAL PORTION, AND MEANS MOUNTED ON SAID UPSTANDING PORTION ENGAGEABLE WITH SAID HINGE LEAF MEANS FOR DETACHABLY LATCHING SAID CORNER ENGAGING MEANS IN SAID OPERATIVE CONTAINER ENGAGING POSITION, AND MEANS ON SAID HORIZONTAL PORTION ENGAGEABLE WITH SAID HINGE LEAF MEANS FOR DETACHABLY LATCHING SAID CORNER ENGAGING MEANS IN A POSITION UNDERLYING SAID SIDE SILL WHEN SAID CORNER ENGAGING MEANS IS TURNED FROM THE OPERATIVE POSITION ABOUT SAID PIVOT MEANS SO THAT SAID HINGE LEAF MEANS LIES SUBSTANTIALLY PARALLEL TO SAID HORIZONTAL PORTION AND SAID CORNER ENGAGING MEANS ARE IN AN INOPERATIVE STORED POSITION BENEATH SAID SIDE SILL.