Low-boy trailer

Claim 1

IN COMBINATION WITH A TOWING VEHICLE AND A WHEELTYPE TRACTOR OF THE TYPE HAVING LARGE DIAMETER REAR DRIVING WHEELS, A FORWARDLY EXTENDING BODY FRAME MOUNTED UPON THE WHEEL AND A TRANSVERSELY DISPOSED EQUIPMENT COLLAR EMBRACING THE BODY OF THE TRACTOR NEAR ITS MEDIUM SECTION WITH THE COLLAR HAVING SPACED, FLAT, SURFACES PORTIONS AT ITS UNDERSIDE, A LOW-BOY TRAILER ADAPTED TO RAISE THE REAR WHEELS OF THE TRACTOR TO FACILITATE TOWING THE SAME AND A CONNECTING MEANS AT THE FRONT OF THE TRACTOR ADAPTED TO ENGAGE THE TOWING VEHICLE AND TO LIFT THE FRONT END OF THE TRACTOR, AND WHEREIN THE LOW-BOY TRAILER COMPRISES: (A) A TRANSVERSELY DISPOSED SUPPORT BAR HAVING UPTURNED ENDS WITH A SPINDLE OUTSTANDING FROM EACH END THEREOF SUBSTANTIALLY ABOVE THE SUPPORT BAR; (B) A PAIR OF WHEELS SUPPORTING THE BAR WITH A WHEEL BEING MOUNTED ON EACH SPINDLE AT EACH END OF THE BAR; (C) A PAIR OF LONGITUDIANLLY DISPOSED RAMP MOUNTED UPON THE SUPPORT BAR WITH A RAMP BEING NEAR EACH END OF THE BAR, AND SPACED APART TO RECEIVE THE TRACTOR REAR WHEELS, AND WITH EACH RAMP INCLUDING A FORWARDLY EXTENDING FRONT PORTION ADAPTED TO NORMALLY EXTEND FORWARDLY AND DOWNWARDLY AT A MODERATE INCLINE TO CONTACT THE EARTH LEVEL, AND A SHORT REARWARDLY EXTENDING REAR PORTION; (D) AN ABUTMENT AT THE REAR END OF EACH RAMP ADAPTED TO STOP THE WHEEL MOVEMENT OF THE TRACTOR WHEN IT MOVES REARWARDLY AND UPON THE RAMP, SAID ABUTMENT BEING LOCATED REARWARDLY OF THE SUPPORT BAR AT A POSITION WHICH PERMITS THE WEIGHT OF THE TRACTOR ON THE REAR WHEELS TO OVERBALANCE THE RAMPS AND CAUSE THE FRONT PORTION THEREOF TO SWING UPWARDLY AND AGAINST THE UNDERSIDE OF THE TRACTOR BODY; AND, (E) A TRANSVERSE SUPPORT BETWEEN THE FRONT PORTION OF EACH RAMP HAVING A PAIR OF SPACED, UPSTANDING POSTS ADAPTED TO ENGAGE SAID COLLAR SURFACES WHEN THE FRONT PORTION OF THE RAMP SWINGS UPWARDLY BY MOVEMENT OF THE TRACTOR REAR WHEELS ON THE RAMP AND PAST THE SUPPORT BAR WITH SAID POT BEING ADAPTED TO LIMIT THE UPSWING TO A POSITION NOT SUBSTANTIALLY BEYOND THE HORIZONTAL WHEN THE FRONT END OF THE TRAILER IS LIFTED.