Flexible tractor borne planter

Claim 1

IN COMBINATION, A TRACTOR HAVING A LOWER LATERAL MAIN TOOL BAR, ARM MEANS ON THE TRACTOR ROTATIVELY SUPPORTING THE MAIN TOOL BAR, A PLOW ASSEMBLY COMPRISING AN UPPER TOOL BAR SPACED ABOVE THE LOWER TOOL BAR, A CARRIER PLATE NON-ROTATABLY CARRIED BY THE MAIN TOOL BAR, SAID UPPER TOOL BAR BEING JOURNALED ON THE CARRIER PLATE, SPACED UPPER AND LOWER LEVERS PIVOTED AT THEIR FORWARD ENDS TO THE CARRIER PLATE AT VERTICALLY-SPACED POINTS AND AT LOCATIONS SPACED BELOW THE UPPER TOOL BAR, A VERTICAL PLOW BEAM TO WHICH THE REAR ENDS OF THE LEVERS ARE PIVOTED AT VERTICALLY-SPACED POINTS, SAID PLOW BEAM, SAID LEVERS, AND SAID CARRIER PLATE BEING IN PARALLELOGRAM RELATIONSHIP, A PLOW ON THE LOWER END OF THE PLOW BEAM, A GUIDE WHEEL ARM FIXED AT ITS REAR END TO THE PLOW BEAM AND HAVIG A GROUND-ENGAGING GUIDE WHEEL ON ITS FORWARD END, A REARWARDLY-INCLINED LEVER FIXED TO THE UPPER TOOL BAR AND EXTENDING UPWARDLY THEREFROM, AND MEANS ADJUSTABLY CONNECTING THE INCLINED LEVER AT ITS REAR END TO THE PLOW BEAM, SAID UPPER TOOL BAR HAVING AN UPSTANDING LEVER FIXED THEREON AND SAID LOWER TOOL BAR HAS A REARWARDLY EXTENDING LEVER FIXED THEREON, AND HYDRAULIC CYLINDER EXTENDING BETWEEN AND PIVOTALLY CONNECTED TO THE UPSTANDING LEVER AND THE REARWARDLY EXTENDING LEVER.