Trailer tow-bar damper mechanism

Claim 1

A TOW DEVICE FOR A TRAILER HAVING SUPPORT WHEELS MOUNTED FOR ROTATION ABOUT AN AXIS, SAID TOW DEVICE COMPRISING A FIRST MEMBER TO BE SECURED TO THE TRAILER, A SECOND MEMBER TO BE CONNECTED TO A TOWING VEHICLE, PIVOT MEANS INTERPOSED BETWEEN THE MEMBERS CONNECTING THEM FOR RELATIVE MOVEMENT ABOUT A PIVOT AXIS PARALLEL TO THE AXIS OF ROTATION OF SAID WHEELS, RESILIENT MEANS INTERPOSED BETWEEN THE MEMBER TO URGE THE MEMBERS TOWARDS AN INITIAL RELATIVE POSITION ABOUT THE PIVOT AXIS, A DAMPING MEANS CONNECTED BETWEEN THE MEMBERS TO DAMP SAID RELATIVE MOVEMENT, SAID RESILIENT MEANS INCLUDING SPRING MEANS CARRIED ON THE FIRST MEMBER AND A FIRST LINK ENGAGING THE SPRING MEANS AND PIVOTALLY CONNECTED TO THE SECOND MEMBER, SAID DAMPING MEANS INCLUDING A ROTARY DAMPING DEVICE CARRIED ON THE FIRST MEMBER AND A SECOND LINK CONNECTED TO THE DAMPING DEVICE AND PIVOTALLY CONNECTED TO THE SECOND MEMBER, SAID PIVOT AXIS LYING BETWEEN THE PIVOTAL CONNECTIONS OF THE LINKS TO THE SECOND MEMBER, SAID SECOND MEMBER HAVING A BORE EXTENDING PARALLEL TO SAID PIVOT AXIS AND A PLURALITY OF SPACED PARALLEL SLOTS INTERSECTING THE BORE NORMAL TO THE LONGITUDINAL AXIS THEREOF, A PLURALITY OF PARALLEL SPACED TONGUES ON THE FIRST LINK, THE TONGUES BEING RECEIVED IN THE SLOTS IN THE BLOCK AND EACH HAVING A CIRCULAR APERTURE IN ALIGNMENT WITH SAID BORE, AND A PIVOT PIN RECEIVED IN THE BORE AND THE APERTURES TO PROVIDE THE PIVOTAL CONNECTION BETWEEN THE FIRST LINK AND THE SECOND MEMBER.