Rotary cultivator equipment

Claim 1

TRACTOR CARRIED GROUND CULTIVATING EQUIPMENT, COMPRISING: (A) AN ATTACHED FRAME STRUCTURE POSITIONED REARWARDLY OF THE REAR WHEELS'' AXLE OF THE TRACTOR INCLUDING A FIXED GENERALLY TRANSVERSE FRAME PART AND AN ELONGATE MOVABLE BOOM EXTENDIONG FORWARDLY AT AN ANGLE THERETO AND PIVOTED AT ITS INNER END ON SAID FIXED FRAME PART OF SWINGING MOVEMENTS TO A POSITION OF USE EXTENDING TO ONE SIDE OF THE TRACTOR USE TO A RAISED SUBSTANTIALLY VERTICAL POSITION OF NON-USE, SAID BOOM EXTENSION HAVING AN ANGULARLY DEFLECTED OUTER END PORTION ADAPTED IN SAID USE POSITION TO EXTEND GENERALLY FORWARDLY AND OCCUPY A POSITION OUTWARDLY SPACED AND SUBSTANTIALLY ALIGNED WITH THE TRACTOR REAR WHEELS; (B) A ROTATABLE GROUND WORKING TOOL SUPPORTED ON THE OUTER END PORTION OF SAID BOOM EXTENSION AND HAVING A SUBSTANTIALLY VERTICAL AXIS OF ROTATION IN SAID USE POSITION OF THE BOOM, SAID TOOL INCLUDING A DISHED HEAD MEMBER HAVING AN UPTURNED PERIPHERAL MARGIN AND A BOTTOM SURFACE FOR SLIDING ENGAGEMENT WITH A GROUND SURFACE THEREUNDER, SAID BOTTOM HAVING A PLURALITY OF EXTERIOR INCLINED PROJECTING GROUND WORKING TEETH; (C) AN ANGLE-GEAR AT SAID OUTER END OF SAID BOOM HAVING A DRIVING CONNECTION WITH SAID TOOL AND AN INPUT SHAFT; (D) AN ANGLE-GEAR ON THE FIXED FRAME PART INBOARD OF THE BOOM PIVOTED END HAVING A DRIVING CONNECTION WITH A POWER TAKE-OFF OF SAID TRACTOR AND AN OUTPUT SHAFT; (E) A TELESCOPING SHAFT HAVING ITS ENDS RESPECTIVELY CONNECTED THROUGH UNIVERSAL JOINTS WITH SAID OUTPUT AND INPUT SHAFTS; AND (F) FLUID CYLINDER-PISTON ACTUATOR MEANS CONNECTING SAID FIXED FRAME PART AND SAID BOOM, AND BEING ENERGIZABLE TO MOVE SAID BOOM BETWEEN ITS USE AND NON-USED POSITIONS, SAID BOOM AND SAID TELESCOPING SHAFT IN SAID NON-USE POSITION HAVING THEIR LOWERMOST ENDS IN SPACED APART RELATION TO FORM A STABLIZHED SUPPORT FOR THE ELEVATED WORKING TOOL.