Trailer hitch

Claim 1

A TRAILER HITCH FOR VEHICLES COMPRISING A CASING INCLUDING A BODY PORTION AND A PAIR OF END PIECES FIXEDLY ATTACHED TO SAID BODY PORTION ADJACENT THE OPPOSITE ENDS THEREOF, SAID END PIECES BEING PROVIDED WITH ALIGNED OPENINGS THERETHROUGH, A DRAW BAR SLIDABLY EXTENDING THROUGH SAID CASING AND PROJECTING OUTWARDLY IN OPPOSITE DIRECTIONS THROUGH SAID OPENINGS, SAID DRAW BAR HAVING A PAIR OF SPACED HOLES INTERMEDIATE THE ENDS THEREOF, SAID BODY PORTION BEING PROVIDED WITH DIAMETRIC ELONGATED SLOTS THERETHROUGH, A PIN, YIELDABLE MEANS URGING SAID PIN TOWARDS A LATCHED POSITION RELATIVE TO SAID DRAW BAR, WHEN IN SAID LATCHED POSITION SAID PIN REMOVABLY EXTENDING TO LATCH SAID DRAW BAR, WHEN SAID PIN EXTENDS THROUGH THROUGH SAID SLOTS AND THROUGH AT LEAST ONE OF SAID HOLES ONE OF SAID HOLES SAID DRAW BAR BEING HELD IN A RETRACTED POSITION AND WHEN SAID PIN EXTENDS THROUGH THE OTHER OF SAID HOLES SAID DRAW BAR BEING HELD IN AN EXTENDED POSITION, CARRIER MEANS SUPPORTING SAID PIN FROM SAID CASING FOR MOVEMENT OF SAID PIN LENGTHWISE IN SAID SLOTS AND FOR MOVEMENT OF SAID PIN SUBSTANTIALLY PERPENDICULAR TO SAID DRAW BAR, A FIRST RESILIENT MEANS IN SAID CASING ON ONE SIDE OF SAID PIN TO ACT AS A SHOCK ABSORBER IN ONE DIRECTION AND A SECOND RESILIENT MEANS IN SAID CASING ON THE OPPOSITE SIDE OF SAID PIN TO ACT AS A SHOCK ABSORBER IN THE OPPOSITE DIRECTION, HANDLE MEANS ATTACHED TO SAID PIN FOR WITHDRAWING SAID PIN AGAINST THE FORCE OF SAID YIELDABLE MEANS FROM SAID LATCHED POSITION TO AN UNLATCHED POSITION IN WHICH SAID PIN IS WITHDRAWN FROM ONE OF SAID SLOTS AND FROM SAID HOLES TO A POSITION OUTSIDE OF SAID DRAW BAR SO THAT SAID DRAW BAR IS FREE TO BE MOVED BETWEEN SAID RETRACTED AND EXTENDED POSITIONS AND OUTWARDLY BEYOND SAID EXTENDED POSITION TO FURTHER EXTENDED POSITIONS, WHEN SAID HANDLE MEANS IS RELEASED SAID YIELDABLE MEANS URGING SAID PIN AGAINST SAID DRAW BAR SO THAT WHEN SAID DRAW BAR IS MOVED TO ALIGN ONE OF SAID HOLES WITH SAID PIN SAID PIN AUTOMATICALLY LATCHES SAID DRAW BAR, MEANS ATTACHED TO SAID CASING FOR SWINGABLY MOUNTING SAID CASING FROM A VEHICLE FOR MOVEMENT IN A SUBSTANTIALLY HORIZONTAL PLANE SO THAT SAID DRAW BAR CAN BE SWUNG THEREWITH IN A SUBSTANTIALLY HORIZONTAL ARC, A SUBSTANTIALLY HORIZONTAL PLATE SUPPORTED BENEATH SAID CASING ADJACENT ONE END THEREOF, SAID PLATE BEING PROVIDED WITH AT LEAST ONE APERTURE THERETHROUGH, AT LEAST ONE LOCKING PIN, MEANS SUPPORTING SAID LOCKING PIN FROM SAID CASING FOR VERTICAL MOVEMENT BETWEEN A LOCKED POSITION AND AN UNLOCKED POSITION, WHEN IN SAID LOCKED POSITION SAID LOCKING PIN REMOVABLY EXTENDING INTO SAID APERTURE TO LOCK SAID CASING AGAINST SWINGING MOVEMENT RELATIVE TO SAID PLATE, WHEN IN SAID UNLOCKED POSITION SAID LOCKING PIN BEING WITHDRAWN FROM SAID APERTURE SO THAT SAID CASING AND SAID DRAW BAR ARE FREE TO SWING HORIZONTALLY, ELASTIC MEANS ATTACHED TO SAID LOCKING PIN TO URGE SAID LOCKING PIN TOWARDS SAID LOCKED POSITION, GRIP MEANS ATTACHED TO SAID LOCKING PIN FOR WITHDRAWING SAID LOCKING PIN AGAINST THE FORCE OF SAID ELASTIC MEANS FROM SAID LOCKED POSITION TO SAID UNLOCKED POSITION, WHEN SAID GRIP MEANS IS RELEASED SAID ELASTIC MEANS URGING SAID LOCKING PIN AGAINST SAID PLATE SO THAT WHEN SAID CASING AND SAID DRAW BAR ARE SWUNG TO ALIGN SAID LOCKING PIN WITH SAID APERTURE SAID LOCKING PIN AUTOMATICALLY LOCKS SAID CASING AND SAID DRAW BAR AGAINST SWINGING MOVEMENT.