Railway car cushioning arrangement

Claim 1

IN A RAILWAY CAR HAVING A FIXED CENTER SILL STRUCTURE INCLUDING SPACED PARALLEL SIDES AND LOWER FLANGES ON THE SIDES, A SLIDABLE STUB CENTER SILL AND SUPPORT THEREFOR MOUNTED WITHIN THE FIXED CENTER SILL STRUCTURE ADJACENT AN END OF THE RAILWAY CAR, A COUPLER MOUNTED WITHIN THE SLIDABLE CENTER SILL AND OPERATIVELY CONNECTED TO SAID SLIDABLE CENTER SILL TO MOVE THE SLIDABLE SILL UPON THE EXERTION OF IMPACT FORCES AGAINST THE COUPLER, A CUSHIONING UNIT MOUNTED WITHIN THE FIXED SILL STRUCTURE ADJACENT THE INNER END OF SAID STUB CENTER SILL AND BEING CONTRACTED UPON THE EXERTION OF IMPACT FORCES AGAINST THE COUPLER AND INWARD MOVEMENT OF THE SLIDABLE CENTER SILL, AND MEANS ON SAID FIXED SILL STRUCTURE TO ENGAGE THE SLIDABLE SILL AND LIMIT THE MOVEMENT THEREOF, SAID SLIDABLE CENTER SILL HAVING A COUPLER CARRIER ADJACENT ITS OUTER END AND EXTENDING INWARDLY FROM THE COUPLER CARRIER TO SAID CUSHIONING UNIT, SAID SUPPORT FOR THE SLIDABLE CENTER SILL BEING SECURING TO THE FLANGES OF SAID FIXED CENTER SILL AND EXTENDING LONGITUDINALLY OF THE CAR BETWEEN THE SIDES OF THE FIXED CENTER SILL STRUCTURE FROM A POSITION ADJACENT THE COUPLER CARRIER TO A POSITION ADJACENT THE CUSHIONING UNIT AND SUPPORTING THE SLIDABLE CENTER SILL ALONG A MAJOR PORTION OF THE LENGTH OF THE SLIDABLE CENTER SILL, THE ADJACENT UPPER SURFACE OF SAID SLIDABLE SILL SUPPORT AND THE ADJACENT FACING LOWER SURFACE OF SAID SLIDABLE CENTER SILL HAVING COACTING GUIDES ALONG A MAJOR PORTION OF THE FACING SURFACES OF THE RESPECTIVE MEMBERS TO PERMIT RELATIVE SLIDING MOVEMENT OF SAID STUB SILL LONGITUDINALLY OF THE RAILWAY CAR AND TO LIMIT LATERAL AND VERTICAL MOVEMENTS OF SAID STUB SILL UPON CUSHIONED MOVEMENT THEREOF RELATIVE TO THE FIXED SILL STRUCTURE.