Liftable load wheel assemblage

Claim 1

A TRAILER COMPRISING A FRAME, REAR SUPPORTING WHEELS ON THE FRAME, A FRONT END SUPPORT FOR THE FRAME, ROCKING BEAM MEANS EXTENDING LONGITUDINALLY OF THE FRAME AND PIVOTALLY CONNECTED TO THE FRAME FOR SWINGING UPWARDLY AND DOWNWARDLY ABOUT A HORIZONTAL AXIS EXTENDING TRANSVERSELY OF THE FRAME, AUXILIARY WHEELS ON THE BEAM MEANS, RESPECTIVELY, AND SPACED ENDWISE OF THE FRAME FROM SAID AXIS AND FORWARDLY FROM THE REAR WHEELS AND REARWARDLY FROM THE FRONT END SUPPORT, INFLATABLE AIR CUSHIONS INTERPOSED BETWEEN THE BEAM MEANS AND FRAME IN SPACED RELATION ENDWISE OF THE FRAME FROM SAID HORIZONTAL AXIS AND YIELDABLY OPPOSING UPWARD SWINGING OF THE BEAMS MEANS WHEN INFLATED BY AIR UNDER PREDETERMINED PRESSURE, MEANS OPERABLE TO ADMIT AIR UNDER SAID PRESSURE INTO THE CUSHIONS FOR FORCING THE ROCKING BEAM MEANS TO SWING DOWNWARDLY TO APPLY THE AUXILIARY WHEELS TO A PAVEMENT UNDER SUFFICIENT YIELDING PRESSURE TO IMPOSE PART OF THE WEIGHT OF THE FRAME, AND ANY LOAD THEREON, ON THE AUXILIARY WHEELS, AND TO REDUCE THE AIR PRESSURE IN THE CUSHIONS TO A PREDETERMINED AMOUNT, SELECTIVELY, RESILIENT MEANS OPERATIVELY INTERCONNECTING THE BEAM MEANS AND FRAME AND RESILIENTLY URGING THE BEAM MEANS UPWARDLY WITH SUFFICIENT FORCE TO LIFT THE AUXILIARY WHEELS CLEAR OF THE PAVEMENT WHEN THE SAID AIR PRESSURE IS REDUCED TO SAID PREDETERMINED AMOUNT, AND SAID RESILIENT MEANS HAVING INADEQUATE FORCE TO SWING THE BEAM MEANS UPWARDLY AGAINST THE RESISTANCE OF THE CUSHIONS WHILE SAID CUSHIONS ARE INFLATED BY SAID AIR UNDER SAID PREDETERMINED PRESSURE.