Soil conditioning apparatus

Claim 1

IN APPARATUS OF THE CLASS ABOVE DESCRIBED, THE COMBINATION COMPRISING; A FRAME, WHEELS ADAPTED TO SUPPORT THE FRAME IN PREDETERMINED RELATIONSHIP WITH THE SURFACE OF THE GROUND OVER WHICH IT MAY BE DRAWN, A PLURALITY OF DRAW BAR UNITS LATERALLY DISPOSED BENEATH SAID FRAME, EACH OF SAID DRAW BAR UNITS BEING PIVOTALLY CONNECTED TO SAID FRAME FOR ROTATION ABOUT A HORIZONTAL AXIS TRANSVERSE TO THE INTENDED DIRECTION OF TRAVEL OF THE APPARATUS AND INCLUDING A PLURALITY OF LATERALLY EXTENDING SUPPORT ARM MEMBERS; MEANS ON SAID FRAME FOR RAISING AND LOWERING THE REAR ENDS OF SAID DRAW BAR UNITS RELATIVE TO SAID FRAME; A PLURALITY OF SOIL CONDITIONING DEVICES DISPOSED AT PREDETERMINED LOCATIONS ON THE SUPPORT ARM MEMBERS OF SAID DRAW BAR UNITS, SAID SOIL CONDITIONING DEVICES BEING COMPRISED OF A LEAF SPRING MEMBER CONNECTED AT ONE END TO THE SUPPORT ARM MEMBERS ON SAID DRAW BAR UNITS AND INCLUDING A TRANSVERSELY EXTENDING SUPPORT MEMBER AT THE OTHER END THEREOF AND A BINARY COIL SPRING NON-ROTATABLY DISPOSED ON SAID TRANSVERSE SUPPORT MEMBER, SAID BINARY COIL SPRING HAVING A PAIR OF FREE END PORTIONS ADAPTED TO ENGAGE THE SURFACE OF THE EARTH AND EXTENDING DOWNWARDLY FROM THE TRANSVERSE SUPPORT MEMBER ON SAID LEAF SPRING, DISPOSED AT A DOWNWARD ANGLE FROM THE SUPPORT ARMS ON SAID DRAW BAR UNITS.