Cushioned underframe

Claim 1

A RAILWAY CAR UNDERFRAME STRUCTURE COMPRISING AN ELONGATED CENTER SILL AND TWO PAIRS OF TRANSVERSELY EXTENDING ALIGNED BOLSTER ARMS INTERSECTING SAID SILL AND SPACED LENGTHWISE OF THE SILL FROM EACH OTHER AND EACH SPACED FROM AN OPPOSITE END OF SAID SILL, SAID SILL AND BOLSTER ARMS BEING GENERALLY OF HOLLOW RECTANGULAR CROSS SECTION, WITH COMMON TOP AND BOTTOM WALLS IN THE REGION OF THEIR INTERSECTIONS AND THE ADJACENT SILL AND BOLSTER ARM SIDE WALLS ARCUATELY MERGING WITH EACH OTHER, VERTICAL WEBS EXTENDING TRANSVERSELY OF SAID SILL BETWEEN THE SIDE WALLS THEREOF ADJACENT THE ARCUATE MERGERS OF THE SILL AND BOLSTER ARM SIDEWALLS, SAID VERTICAL WEBS BEING CENTRALLY APERTURED, TUBULAR WALL STRUCTURE REGISTERING WITH SAID APERTURES AND EXTENDING BETWEEN ADJACENT TRANSVERSE VERTICAL WEBS, VERTICAL WEB STRUCTURES EXTENDING LONGITUDINALLY OF THE UNDERFRAME AND CONNECTING THE TOP AND BOTTOM OF SAID TUBULAR WALL STRUCTURE WITH SAID TOP AND BOTTOM WALLS AND EXTENDING BETWEEN AND MERGING AT ITS ENDS WITH ADJACENT TRANSVERSE VERTICAL WEBS, AN ADDITIONAL TRANSVERSE VERTICAL WEB INTERMEDIATE ADJACENT BOLSTER ARM SIDE WALLS AND EXTENDING ACROSS SAID SILL AND TERMINATING AT BOTH SIDES THEREOF LATERALLY OUTWARDLY OF THE ARCUATE MERGERS BETWEEN SAID SILL AND BOLSTER ARM SIDE WALLS, A PAIR OF LONGITUDINALLY SPACED PAIRS OF TRANSVERSELY-ALIGNED INWARDLY DIRECTED LUGS FORMED ON SAID SILL SIDE WALLS INTERMEDIATE SAID SPACED PAIRS OF BOLSTER ARMS AND FORMING A CUSHION POCKET BETWEEN THEM, A DRAFT COLUMN LONGITUDINALLY SLIDABLY RECEIVED WITHIN SAID SILL AND COMPRISING SEPARATE END SECTIONS OF RECTANGULAR CROSS SECTION POSITIONED IN THE SPACES BETWEEN SAID BOLSTER ARMS AND THE ADJACENT END OF THE SILL AND SLIDABLY ENGAGEABLE WITH INNER SURFACES OF THE SILL AND EACH HAVING A TUBULAR REARWARD EXTENSION OF SMALLER CROSS SECTION THAN SAID RECTANGULAR SECTIONS PASSING THROUGH THE ADJACENT APERTURES AND SLIDABLY ENGAGEABLE WITH THE CONNECTING TUBULAR WALL STRUCTURE, AND COLUMNAR STRUCTURE INTERMEDIATE SAID BOLSTER ARMS AND ALIGNED WITH SAID END PORTIONS AND DETACHABLY SECURED AT ITS ENDS TO THE INNER ENDS OF SAID TUBULAR EXTENSIONS, SAID INTERMEDIATE STRUCTURE INCLUDING A YOKE WITH ITS ENDS NORMALLY TRANSVERSELY ALIGNED WITH SAID LUGS, THERE BEING A CUSHION DEVICE WITHIN SAID YOKE WITH ITS ENDS NORMALLY ENGAGING THE ENDS OF SAID YOKE AND SAID LUGS WHEREBY ENERGY IMPARTED TO SAID COLUMN BY THE APPLICATION THERETO OF BUFFING AND DRAFT FORCES IS DISSIPATED.