Sliding gate hopper car discharge structure

Claim 1

A BOTTOM OUTLET STRUCTURE ADAPTED TO BE SECURED BENEATH A HOPPER STRUCTURE FOR THE DISCHARGE OF LADING AND COMPRISING, A FIRST DISCHARGE STRUCTURE INCLUDING A GAT AND SUPPORT MEANS ON WHICH THE GATE IS MOUNTED FOR SLIDING MOVEMENT FROM ONE SIDE OF THE HOPPER STRUCTURE IN A GENERALLY HORIZONTAL PLANE BETWEEN OPEN AND CLOSED POSITIONS TO CONTROL THE FLOW OF LADING THROUGH THE FIRST DISCHARGE STRUCTURE, MEANS TO SLIDE SAID GATE IN SAID GENERALLY HORIZONTAL PLANE BETWEEN ITS OPEN AND CLOSED POSITIONS, A SECOND DISCHARGE STRUCTURE MOUNTED BENEATH SAID FIRST DISCHARGE STRUCTURE AND ADAPTED TO RECEIVE LADING THEREFROM, AND MEANS SUPPORTING SAID SECOND DISCHARGE STRUCTURE FOR MOVEMENT IN A GENERALLY HORIZONTAL DIRECTION ONLY FROM SAID ONE SIDE OF THE HOPPER STRUCTURE IN AN AREA GENERALLY VERTICALLY COEXTENSIVE WITH THE AREA UTILIZED BY THE MOVEMENT OF THE GATE AND BETWEEN AN OPERABLE POSITION BENEATH THE FIRST DISCHARGE STRUCTURE AND AN INOPERABLE POSITION REMOVED FROM BENEATH THE FIRST DISCHARGE STRUCTURE, SAID SECOND DISCHARGE STRUCTURE BEING MOVABLE SELECTIVELY BETWEEN OPERABLE AND INOPERABLE POSITIONS TO PERMIT A DISCHARGE THROUGH BOTH SAID FIRST AND SECOND DISCHARGE STRUCTURES WHEN THE GATE IS OPEN AND THE SECOND DISCHARGE STRUCTURE IS IN OPERABLE POSITION, AND TO PERMIT A DISCHARGE OF LADING ONLY THROUGH THE FIRST DISCHARGE STRUCTURE WHEN THE GATE IS OPEN AND THE SECOND DISCHARGE STRUCTURE IS IN INOPERABLE POSITION.