Spray boom leveler apparatus

Claim 1

FIELD CROP SPRAYS APPARATUS COMPRISING: A MOBILE GROUND SUPPORTED FRAME FOR TRAVERSING THE FIELD IN NON-INTERFERING RELATION WITH CROP THEREON. A PAIR OF ELONGATE SPRAY BOOMS RESPECTIVELY EXTENDING IN OPPOSITE DIRECTIONS TRAVERSELY OUTWARDLY FROM THE FRAME AND HAVING LIQUID DISCHARGING SPRAY MEANS TO APPLY SPRAY TO THE VEGETATION IN THE FIELD, MEANS PIVOTALLY CONNECTING SAID SPRAY BOOMS TO THE FRAME TO FACILITATE SWINGING OF SAID BOOMS UPWARDLY AND DOWNWARDLY, MEANS INCLUDING FLEXIBLE CONDUITS CONNECTED WITH SAID SPRAY BOOMS AND SUPPLYING LIQUID FOR SPRAYING THERETO, A GENERALLY HORIZONTAL SLIDE DISPOSED ABOVE SAID PIVOT MEANS, MEANS CONNECTING AND SLIDABLY GUIDING SAID SLIDE TO THE FRAME FOR SUBSTANTIALLY HORIZONTAL MOVEMENT IN A DIRECTION TRANSVERSELY OF THE FRAME, CONTROLLABLE OPERATING MEANS CONNECTED BETWEEN SAID FRAME AND SAID SLIDE AND CONTROLLABLY MOVING SAID SLIDE TO A DESIRED POSITION, AND A PAIR OF ELONGATE CONNECTING AND SUPPORTING ELEMENTS EACH CONNECTED WITH A RESPECTIVE SPRAY BOOM IN SPACED RELATION WITH SAID PIVOT MEANS AND EXTENDING DIAGONALLY UPWARDLY TO SAID SLIDE, SAID CONNECTING ELEMENTS BEING SECURED TO SAID SLIDE, WHEREBY MOVEMENT OF SAID SLIDE PRODUCES SWINGING OF SAID SPRAY BOOMS IN OPPOSITE DIRECTIONS UPWARDLY AND DOWNWARDLY TO FACILITATE MAINTENANCE OF SAID BOOMS IN SUBSTANTIALLY PARALLEL RELATION WITH THE GROUND CONTOUR IN THE EVENT THAT IRREGULAR GROUND CONTOUR PRODUCES TIPPING OF SAID FRAME.