Fore and aft rocking and laterally shifting fifth wheel suspension

Claim 1

A SUPPORT FOR A TRACTOR-TRAILER FIFTH WHEEL PLATE COMPRISING: AN ELONGATED STATIONARY FRAME; SAID FRAME ADJACENT EACH END HAVING AN ARCUATELY CONCAVE BEARING PLATE; THE CURVATURE OF SAID BEARING PLATES BEING SEGMENTS OF AN ARC TRACED BY A RADIUS OF A LENGTH GREATER THAN THE LENGTH OF SAID STATIONARY FRAME; A MOVABLE FRAME HAVING A PAIR OF CRADLES, ONE AT EACH END; A TIE ROD CONNECTED TO AND EXTENDING BETWEEN SAID CRADLES AND HOLDING SAID CRADLES AT A FIXED DISTANCE FROM EACH OTHER; EACH OF SAID CRADLES HAVING A CONVEX SHOE SLIDABLY SEATED ON ONE OF SAID BEARING PLATES; GUIDE MEANS MOUNTED ON SAID STATIONARY FRAME AND OVERLAPPING A PORTION OF EACH OF SAID SHOES AND RESTRAINING SAID SHOES FROM LIFTING AWAY FROM SAID BEARING PLATES; STOP MEANS FOR LIMITING THE SLIDING MOVEMENT OF SAID MOVABLE FRAME WITH RESPECT TO SAID STATIONARY FRAME; BEARING MEANS ON SAID MOVABLE FRAME, SAID BEARING MEANS MOUNTING SAID FIFTH WHEEL PLATE FOR PIVOTAL MOVEMENT ABOUT AN AXIS PARALLEL TO THE DIRECTION OF MOVEMENT OF SAID MOVABLE FRAME.