Split sliding sill and cushioning arrangement

Claim 1

A RAILWAY CAR COMPRISING AN UNDERFRAME, A SLIDING SILL, MEANS MOUNTING SAID SLIDING SILL FOR LENGTHWISE MOVEMENT ON SAID UNDERFRAME, SAID SLIDING SILL INCLUDING A PAIR OF LENGTHWISE SPACED SILL SECTIONS MOVABLE RELATIVELY TO EACH OTHER FROM A SPACED NEUTRAL POSITION TO AN EXTENDED POSITION AND A CONTRACTED POSITION AND MOVABLE CONJOINTLY RELATIVE TO SAID UNDERFRAME WHEN IN SAID EXTENDED AND CONTRACTED POSITIONS, COUPLERS CARRIED ON THE REMOTE ENDS OF SAID SLIDING SILL SECTIONS, A RESILIENT STRESS RELIEVING CUSHION MEANS HAVING A PREDETERMINED TRAVEL MOUNTED ON ONE OF SAID SECTIONS, MEANS FIXED TO THE OTHER OF SAID SILL SECTIONS FOR MOVEMENT THEREWITH AND ENGAGING SAID RESILIENT STRESS RELIEVING CUSHION MEANS FOR CONNECTING SAID SILL SECTIONS AND FOR RENDERING SAID RESILIENT STRESS RELIEVING CUSHION MEANS OPERATIVE UPON BUFF AND DRAFT IMPACT AT SAID COUPLERS THEREBY CAUSING SAID SILL SECTIONS TO MOVE TO SAID CONTACTED AND EXTENDED POSITIONS RESPECTIVELY AND RELIEVING THE STRESSES THROUGH THE LENGTH OF SAID SLIDING SILL, A LONG TRAVEL LADING PROTECTION CUSHION DEVICE HAVING A TRAVEL IN EXCESS OF THE TRAVEL OF SAID STRESS RELIEVING CUSHIONING MEANS AND SAID DISTANCE OF MOVEMENT OF SAID SLIDING SILL SECTIONS FROM SAID NEUTRAL POSITION TO SAID EXTENDED OR CONTRACTED POSITIONS, SAID LONG TRAVEL CUSHION DEVICE BEING INTERPOSED FOR INTERACTION BETWEEN SAID SLIDING SILL AND SAID UNDERFRAME AND BEING OPERATIVE DURING SAID CONJOINT MOVEMENT OF SAID SILL SECTIONS, AND MEANS ON SAID SILL SECTIONS CAUSING SAID LONG TRAVEL LADING PROTECTION CUSHION DEVICE TO BE ACTUATED DURING MOVEMENT OF SAID SILL SECTIONS RELATIVELY TO EACH OTHER FROM SAID NEUTRAL TO SAID CONTRACTED POSITION, AND SAID RESILIENT STRESS RELIEVING CUSHION MEANS BEING ACTUATED SOLEY DURING MOVEMENT OF SAID SILL SECTIONS FROM SAID NEUTRAL TO SAID EXTENDED POSTION.