Selective travel draft gear arrangement

Claim 1

IN COMBINATION WITH CAR UNDERFRAME STRUCTURE THAT INCLUDES LENGTHWISE EXTENDING FEXED SILLS DEFINING A DRAFT POCKET, A COUPLER PROJECTING INTO AND MOVABLE LENGTHWISE IN SAID POCKET, A BOLSTER CENTER FILLER BETWEEN SAID SILLS AND HAVING RIGID STOPS BORDERING AND DEFINING REAR LATERAL EXTREMITIES OF SAID POCKET, A SELECTIVE TRAVEL DRAFT GEAR COMBINATION COMPRISING A HOUSING PROJECTING FORWARDLY FROM SAID SILLS AND EXTENDING LENGTHWISE REARWARDLY INTO SAID POCKET TO TERMINATE IN FORWARDLY SPACED FACING RELATION TO SAID STOPS TO MOVE TOWARDS SAID STOPS IN BUFF, SAID HOUSING HAVING A REAR CHAMBER OPENING TOWARDS SAID CENTER FILLER, A FRONT CHAMBER OPENING ENDWISE OPPOSITELY OF SAID REAR CHAMBER AND RIGID INTERNAL ABUTMENT WALL STRUCTURE DIVIDING SAID CHAMBERS, A FOLLOWER IN SAID POCKET TO ABUT SAID REAR STOPS, A CUSHIONING UNIT MOUNTED IN SAID REAR CHAMBER TO OPERATE ONLY IN BUFF AND INCLUDING MEANS PROJECTING REARWARDLY THEREFROM AND ENGAGED TO SAID FOLLOWER TO TRANSMIT BUFF REACTION TO SAID STOPS, SAID CUSHIONING UNIT BEING A SELF RESTORING HYDRAULIC FLUID THROTTLING TYPE AND HAVING A COIL TYPE RETURN SPRING ENCIRCLING SAID MEANS AND REACTING BETWEEN SAID FOLLOWER