Railway car underframe construction

Claim 1

A RAILWAY CAR COMPRISING, A PAIR OF SPACED WHEEL TRUCK ASSEMBLIES, A CENTER SILL HAVING A CENTRAL PORTION EXTENDING BETWEEN SAID WHEEL TRUCK ASSEMBLIES, END PORTIONS ON SAID CENTER SILL EXTENDING OVER AND PROJECTING BEYOND EACH OF SAID WHEEL TRUCK ASSEMBLIES AND BEING SUPPORTED THEREBY, SAID CENTER SILL INCLUDING A PAIR OF SPACED VERTICALLY SIDE WEB PORTIONS, EACH OF SAID SIDE WEB PORTIONS HAVING GREATER VERTICAL DEPTH INTERMEDIATE SAID WHEEL TRUCK ASSEMBLIES THAN AT THE END PORTIONS THEREOF FOR ACCOMMODATING INCREASED SHEAR FORCES IN THE CENTRAL PORTION OF SAID CENTER SILL, A SERIES OF LONGITUDINALLY SPACED TRANSVERSELY EXTENDING SEPARATOR PLATE MEANS JOINING SAID SPACED SIDE WEB PORTIONS FOR PROVIDING TRANSVERSELY RIGIDITY THERETO, A BOTTOM COVER PLATE OF GREATER TRANSVERSE WIDTH THAN THE SPACING BETWEEN SAID SIDE WEB PORTIONS EXTENDING OUTWARDLY BEYOND THE LOWER EDGES OF EACH OF SAID SIDE WEB PORTIONS, MEANS JOINING SAID BOTTOM COVER PLATE TO SAID SIDE WEB PORTIONS SAID BOTTOM COVER PLATE BEING OF LESSER TRANSVERSE WIDTH IN THE REGION OF SAID WHEEL TRUCK ASSEMBLIES, SAID SEPARATOR PLATES BEING JOINED TO SAID BOTTOM COVER PLATE AND EXTENDING UPWARDLY THEREFROM TERMINATING SHORT OF A TOP EDGE OF SAID SIDE WEBS, A TOP COVER PLATE OF GREATER TRANSVERSE DIMENSIONS THAN SAID SPACING BETWEEN SAID SIDE WEB PORTIONS, SAID TOP COVER PLATE EXTENDING ACROSS THE TOP EDGES OF SAID SIDE WEB PORTIONS AND BEING JOINED THERETO TO DEFINE A PAIR OF OUTWARDLY PROJECTING TOP FLANGES, A PLURALITY OF GUSSET PLATE MEANS JOINED TO SAID SIDE WEB PORTIONS TO LEND TRANSVERSE RIGIDITY THERETO, SAID GUSSET PLATE MEANS BEING TRANSVERSELY IN LINE WITH SAID SEPARATOR PLATE MEANS, AND A PAIR OF BOLSTER ASSEMBLIES ABOVE EACH OF SAID WHEEL TRUCK ASSEMBLIES SAID BOLSTER ASSEMBLIES EACH INCLUDING TWO PAIR OF LONGITUDINALLY SPACED SIDE PLATE MEANS, SAID SIDE PLATE MEANS EACH INCLUDING A PLURALITY OF PLATE MEANS CONNECTED IN SELECTIVE VERTICAL SPACED RELATIONSHIP, SAID PLURALITY OF PLATE MEANS EACH BEING FIXED TO A RESPECTIVE ONE OF SAID SIDE WEBS AND OF WHICH AT LEAST ONE OF SAID PLATE MEANS IS FIXED TO SAID OUTWARDLY PROJECTING FLANGES OF SAID TOP COVER PLATE, AND A BOTTOM CLOSURE PLATE FIXED ACROSS THE BOTTOM EDGES OF ANOTHER OF SAID PLURALITY OF PLATE MEANS AND TO SAID BOTTOM COVER PLATE.