Land vehicles – Wheeled – Articulated vehicle
Patent
1976-09-02
1977-08-16
Song, Robert R.
Land vehicles
Wheeled
Articulated vehicle
280476R, B62D 5300
Patent
active
040422534
ABSTRACT:
A weight transfer system for coupling a two-way gang plow to a towing vehicle eliminates lifting of the rear end of the towing vehicle due to the weight of the plow assembly when the plow assembly is raised for transportation. An elongated cable is connected at its forward end to the tow bar of the towing vehicle, at a pivot point above and coaxial with the pivot towing connection of the plow tongue, and at its rearward end to the main support frame at a point above the point of joinder of the main support frame and a pivoting linkage which connects the main support frame to the wheel of the plow. A hydraulic cylinder rotates the linkage to raise the main support frame, thereby tensioning the cable and rotating the support frame angularly upward for towing. The tension force in the cable in turn causes a moment at the tow bar counteracting the lifting force at the rear end of the towing vehicle caused by the weight of the plow assembly.
REFERENCES:
patent: 2785615 (1957-03-01), McCall
patent: 2786589 (1957-03-01), Garrett
patent: 3679230 (1972-07-01), Farrant
patent: 3692331 (1972-09-01), Vegors
patent: 3974880 (1976-08-01), Filan
Olson Oliver D.
Schrecengost R.
Song Robert R.
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