1. A RESILIENT UNIT FOR A RAILROAD CAR OR THE LIKE HAVING RELATIVELY MOVABLE PORTIONS, SAID UNIT INCLUDING FIRST AND SECOND INTERCOUPLED OVERLAPPING MEMBERS TELESCOPING WITHIN ONE ANOTHER IN GENERALLY THE SAME LONGITUDINAL PLANE AND YOKE HAVING ONE END PART IN GENERALLY SAID SAME PLANE AND IN OVERLAPPING RECIPROCAL RELATION THERETO, THE OTHER END PART OF SAID YOKE BEING ADAPTED TO BE CONNECTED TO ONE OF THE MOVABLE CAR PORTIONS AND FORMING THE MEANS FOR CONNECTING ONE OF THE INTERCOUPLED MEMBERS OF THE RESILIENT UNIT WITH ONE OF THE CAR PORTIONS AND MEANS ADAPTED TO CONNECT THE OTHER ONE OF THE INTERCOUPLED MEMBERS OF THE RESILIENT UNIT TO THE OTHER CAR PORTION, A RETAINER MEANS SEATED WITHIN EACH OF THE INTERCOUPLED MEMBERS, RESILIENT MEANS CONTAINED BETWEEN AND ENGAGING THE RETAINER MEANS FOR BIASINGLY URGING THE MEMBERS OUTWARDLY OF ONE ANOTHER, SAID ONE MEMBER HAVING MEANS FOR HAVING SAID ONE YOKE PART BEING EXTENDABLE OUTWARDLY OF THE ONE MEMBER FOR INCREASING THE LENGTH OF THE UNIT AND HAVING THE OTHER YOKE PART ENGAGEABLE WITH THE RESILIENT MEANS FOR BIASINGLY URGING THE YOKE OUTWARDLY OF THE RETAINER MEANS OF THE ONE MEMBER, WHEREBY WHEN THE RESILIENT UNIT IS SUBJECTED TO STRESS IN ONE DIRECTION THE RESILIENT MENAS IS COMPRESSED BETWEEN SAID OTHER PART OF THE YOKE AND THE RETAINER MEANS OF THE ONE MEMBER THEREBY ELONGATING THE RESILIENT UNIT AND WHEN SUBJECTED TO STRESS IN THE OTHER DIRECTION THE RESILIENT MEANS IS COMPRESSED BETWEEN EACH OF THE RETAINER MEANS THEREBY CONTRACTING SAID RESILIENT UNIT.