Railway car

Claim 1

A RAILWAY CAR OF THE GONDOLA TYPE COMPRISING A PAIR OF GENERALLY VERTICALLY EXTENDING SPACED SIDES AND A PAIR OF GENERALLY VERTICALLY EXTENDING SPACED ENDS CONNECTING THE SIDES, A TRUCK ASSEMBLY ADJACENT EACH END OF THE CAR, AND END STUB CENTER SILL STRUCTURE OVER EACH OF THE TRUCK ASSEMBLIES, A CHANNEL-SHAPED SIDE SILL EXTENDING LONGITUDINALLY ALONG EACH SIDE OF THE CAR AND HAVING INWARDLY EXTENDING HORIZONTAL LEGS, EACH OF THE SIDES COMPRISING A SIDE SHEET HAVING A LOWER OUTTURNED MARGINAL PORTION SUPPORTED ON AND SECURED TO THE UPPER LEG OF THE SUBJACENT SIDE SILL, A GENERALLY TROUGH-SHAPED BOTTOM STRUCTURE POSITIONED BETWEEN THE END CENTER SILL TO A POSITIOIN EXTENDING DOWNWARDLY FROM THE SIDE SILLS TO A POSITION AT A LEVEL BELOW THE LEVEL OF THE ADJACENT STUB CENTER SILLS TO FORM A POCKET INTERIORLY OF THE CAR BENEATH THE END CENTER SILL STRUCTURES, SAID TROUGH-SHAPED BOTTOM STRUCTURE COMPRISING A GENERALLY U-SHAPED ECTENDING BETWEEN AND SECURED TO THE ADJACENT SIDE SILLS AGAINST THE LEGS OF EACH SILL TO PROVIDE A BOX-SHAPED STRUCTURE THEREWITH, A PLURALITY OF GENERALLY U-SHAPED TRANSVERSE STIFFENERS SPACED ALONG THE LENGTH OF THE TROUGH-SHAPED PLATE AND SECURED TO THE PLATE AND THE LOWER LEG OF EACH ADJACENT SPACED SIDE SILL THEREBY TO REINFORCE THE BOTTOM STRUCTURE, SAID BOTTOM STRUCTURE FORMING A RELATIVELY SMOOTH CONTINUATION OF THE VERTICAL SIDES WITH THE INTERIOR OF THE RAILWAY CAR BEING GENERALLY UNOBSTRUCTED, AND A PLURALITY OF GENERALLY VERTICAL SIDE POSTS SPACED ALONG THE LENGTH OF EACH SIDE SHEET AND SECURED THERETO OVER THE UPPER LEG OF THE SUBJACENT SIDE SILL.