Farm wagon caster wheel

Claim 1

A CASTER WHEEL ASSEMBLY FOR A VEHICLE COMPRISING A WHEEL SUSPENSION MEMBER PIVOTALLY MOUNTED ON THE UNDERSIDE OF SAID VEHICLE, A WHEEL CARRIED BY THE LOWER PORTION OF SAID WHEEL SUSPENSION MEMBER, AN ECCENTRICALLY MOUNTED CAM PLATE SECURED TO THE UPPER PORTION OF SAID WHEEL SUSPENSION MEMBER, SAID CAM PLATE HAVING A PERIPHERAL CAM SURFACE WITH A NOTCH PROVIDED THEREIN, A GUIDE PLATE RIGIDLY SECURED TO THE BOTTOM OF SAID VEHICLE ABOVE SAID CAM PLATE, SAID GUIDE PLATE BEING PROVIDED WITH A NOTCH WHICH IS IN ALIGNMENT WITH THE NOTCH OF SAID CAM PLATE WHEN THE CASTER WHEEL ASSEMBLY IS IN A STRAIGHT LINE POSITION, A SPRING BIASED DASHPOT ASSEMBLY SECURED TO THE UNDERSIDE OF SAID VEHICLE, AND A ROLLER MEMBER ATTACHED TO SAID SPRING BIASED DASHPOT ASSEMBLY, SAID ROLLER MEMBER BEING MAINTAINED IN CONSTANT CONTACT WITH BOTH SAID PLATES BY SAID ASSEMBLY AND SEATED IN THE NOTCHES OF SAID PLATES WHEN THE VEHICLE IS MOVING IN A STRAIGHT LINE TO PREVENT THE CASTERING OF SAID CASTER WHEEL ASSEMBLY, SAID ROLLER MEMBER ALWAYS SEATED IN SAID GUIDE PLATE NOTCH AT ALL RELATIVE POSITIONS OF SAID PLATES.