Tractor cab

Claim 1

A UNIVERSAL ENCLOSURE STRUCTURE FOR TRACTORS COMPRISING: FRAME MEANS INCLUDING A TOP FRAME AND A BOTTOM FRAME CONNECTED BY UPRIGHT FRAME MEMBERS, SAID TOP AND BOTTOM FRAMES BEING CONSTRUCTED AND ARRANGED TO EXTEND ABOUT THE PERIMETER OF THE OPERATOR''S AREA OF A TRACTOR, THERE BEING A GAP IN SAID BOTTOM FRAME FOR ENTERING AND LEAVING THE OPERATOR''S AREA; A COVER PANEL OVERLYING AND SECURED TO THE TOP FRAME; AN UPRIGHT FRONT POST OF ADJUSTABLE LENGTH WHICH IS SECURED TO SAID FRAME MEANS AND IS ADAPTED TO REST UPON A PART OF THE TRACTOR NEAR THE FRONT OF THE OPERATOR''S AREA; UPRIGHT SIDE POSTS OF ADJUSTABLE LENGTH WHICH ARE SECURED TO THE FRAME MEANS AND WHICH COOPERATE WITH THE FRONT POST TO ORIENT THE FRAME MEANS WITH THE TOP AND BOTTOM FRAMES GENERALLY HORIZONTAL WITH THE BOTTOM FRAME SUBSTANTIALLY ABOVE THE FLOOR OF THE TRACTOR; LATERALLY ADJUSTABLE MEANS ON SAID SIDE POSTS FOR SECURING THEM TO TRACTOR FENDERS WHICH ARE ADJACENT SAID POSTS; A PLURALITY OF PANELS MOUNTED IN SAID FRAME MEANS AND COOPERATING TO FORM AN ENCLOSURE WHICH ENTIRELY SURROUNDS THE UPPER PART OF THE OPERATOR''S AREA, AT LEAST SOME OF SAID PANELS BEING MOVABLE TO SELECTIVELY PROVIDE OPENINGS IN SAID ENCLOSURE; CURTAIN-LIKE SKIRT MEANS WHICH IS DETACHABLY SECURED TO AND HANGS LOOSELY FROM THE BOTTOM FRAME AND COMPLETELY SURROUNDS THE LOWER PART OF THE OPERATOR''S AREA, SAID SKIRT MEANS INCLUDING A PORTION HANGING ACROSS THE GAP IN THE BOTTOM FRAME; AND MEANS FOR DETACHING SAID PORTION FROM THE BOTTOM FRAME AT ONE SIDE OF THE GAP FOR ENTERING OR LEAVING THE OPERATOR''S AREA.