Impact absorbing apparatus

Claim 1

IN AN IMPACT ABSORBING APPARATUS FOR INTERPOSITION BETWEEN THE DRAFT GEAR AND THE LADING IN A RAILWAY CAR OF THE TUPE HAVING A BUFF AND DRAFT CENTER SILL AND LADING SUPPORTING FRAME MOUNTED FOR MOVEMENT RELATIVE TO EACH OTHER, THE APPARATUS HAVING A PAIR OF HEADS NORMALLY ABUTTED AGAINST LUGS CARRIED ON THE CENTER SILL AND FORCE TRANSMITTING STOPS CARRIED ON THE LADING SUPPORTING FRAME, THE IMPROVEMENT COMPRISING, A FLUID RESERVOIR MOUNTING ONE OF THE HEADS, A CYLINDER FORMING TUBE MOUNTING THE OTHER OF THE HEADS, SAID RESERVOIR HAVING AN OPENING THROUGH WHICH SAID TUBE PROJECTS INTO SAID RESERVOIR, A ROD SECURED TO THE FIRST OF THE HEADS, EXTENDING THROUGH SAID RESERVOIR, AND MOVABLY PROJECTING INTO SAID TUBE, SAID ROD HAVING AT LEAST ONE SLOT ALONG ITS LENGTH FROM THE END PROJECTING INTO SAID TUBE SUBSTANTIALLY TO THE FIRST HEAD, A PORT IN SAID TUBE COMMUNICATING SAID SLOT WITH THE INTERIOR OF SAID RESERVOIR, A BELLEVILLE SPRING ASSEMBLY IN SAID RESERVOIR ACTING BETWEEN THE FIRST HEAD AND THE END OF SAID TUBE PROJECTING INTO SAID RESERVOIR TO URGE THE HEADS TOWARD NORMAL POSITION, SAID BELLEVILLE SPRING ASSEMBLY PROVIDING RESTRICTIVE FLUID FLOW METERING MEANS AT THE CONTACTING EDGES OF THE ELEMENTS THEREOF, AND A COMPRESSIBLE SPACE COMPENSATING HOLLOW RING IN SAID RESERVOIR.