Land leveling attachment for tractors

Claim 1

AN EARTH MOVING IMPLEMENT FOR A TRACTOR COMPRISING: A PAIR OF DRAFT ARMS; MEANS FOR SECURING SAID SHAFT ARMS TO SAID TRACTOR IN VERTICALLY-MOVABLE, REARWARDLYEXTENDING, SPACED-APART RELATION; A SCRAPER BLADE; A PAIR OF TONGUE MEMBERS FIXEDLY MOUNTED ON AND EXTENDING FORWARDLY FROM SAID SCRAPER BLADE; A SUBSTANTIALLYSTRAIGHT, ELONGATED HINGE SHAFT MOUNTED ON AND EXTENDING TRANSVERSALLY BETWEEN SAID TONGUE MEMBERS SUBSTANTIALLY PARALLEL TO SAID BLADE WITH ITS EXTREMITIES PROJECTING OPPOSITELY OUTWARD FROM SAID TONGUE MEMBERS; SAID DRAFT ARMS BEING REMOVABLY CONNECTED TO THE EXTREMITIES OF SAID HINGE SHAFT; AN ELONGATED FULCRUM MEMBER; MEANS ATTACHING THE EXTREMITIES OF SAID FULCRUM MEMBER TO SAID DRAFT ARMS SO THAT IT WILL EXTEND HORIZONTALLY THEREBETWEEN PARALLEL TO AND FORWARDLY OF SAID HINGE SHAFT, THE FORWARD EXTREMITIES OF SAID TONGUE MEMBERS ENGAGING SAID FULCRUM MEMBER SO THAT SAID BLADE WILL MOVE VERTICALLY IN CONSEQUENCE OF THE VERTICAL MOVEMENTS OF SAID DRAFT ARMS; A LEVELING FRAME HAVING WHEELS AT THE REAR END THEREOF, THE FORWARD EXTREMITY OF SAID FRAME BEING HINGEDLY SUPPORTED ON SAID HINGE SHAFT; AND A COMPRESSION MEMBER ADAPTED TO BE INTERCONNECTED BETWEEN SAID TRACTOR AND THE FORWARD EXTREMITY OF SAID LEVELING FRAME TO TRANSMIT VERTICAL ANGULAR MOVEMENTS OF SAID TRACTOR TO SAID FRAME.