Combination land leveler

Claim 1

A LAND LEVELER COMPRISING AN ELONGATED RIGID FRAME, A PLURALITY OF ELONGATED BLADES MOUNTED ON SAID FRAME, THE LONGITUDINAL AXIS OF THE BLADES BEING IN REARWARDLY INCLINED RELATION TO THE LONGITUDINAL AXIS OF THE FRAME, A TRANSVERSELY EXTENDING BUCKET PIVOTALLY MOUNTED ON SAID FRAME FOR PIVOTAL MOVEMENT ABOUT A TRANSVERSE AXIS, SAID BUCKET BEING DISPOSED INTERMEDIATE THE BLADES WITH AT LEAST ONE INCLINED BLADE DISPOSED FORWARDLY AND REARWARDLY OF THE BUCKET, SAID BUCKET ADAPTED FOR SELECTIVE ENGAGEMENT WITH THE GROUND SURFACE FOR MOVING EARTH INTO LOW SPOTS, SAID BUCKET INCLUDING A TRIP BLADE MOUNTED ON THE LOWER EDGE THEREOF, AND SPRING MEANS ENGAGING THE TRIP BLADE FOR RETAINING IT IN SUBSTANTIALLY VERTICAL POSITION BUT ENABLING IT TO PIVOT REARWARDLY AT THE BOTTOM EDGE THEREOF SO THAT THE BUCKET MAY PASS OVER AN OBSTRUCTION WITHOUT THE BUCKET BEING ELEVATED, SAID SPRING MEANS INCLUDING AN ELONGATED LINK PIVOTALLY ATTACHED TO THE REAR OF THE BUCKET AND HAVING A LOWER END PIVOTALLY ATTACHED TO THE TRIP BLADE, THE UPPER END OF SAID LINK BEING PIVOTALLY ATTACHED TO A SPRING PLUNGER ASSEMBLY HAVING ONE END THEREOF PIVOTALLY ATTACHED TO THE FRAME THUS BIASING THE TRIP BLADE TO ITS OPERATIVE VERTICAL POSITION.