Tray for mushroom picking boxes

Claim 1

IN A PICKING BOX TRAY, THE COMBINATION OF: FIRST AND SECOND END MEMBERS, EACH OF WHICH INCLUDES A HORIZONTAL PLATE EXTENDING ENTIRELY ACROSS SAID TRAY AT THE TOP LEVEL THEREOF, A PAIR OF THIN WALLED CORNER LEGS UNITED WITH INNER EDGE PORTIONS OF SAID PLATE AT ITS OPPOSITE ENDS, AND THIN WALLED INTERIOR LEG MEANS UNITED WITH SAID INNER EDGE PORTION OF SAID PLATE INTERIORLY OF SAID CORNER LEGS AND SYMMETRICALLY RELATED THEREWITH, SAID CORNER LEGS AND LEG MEANS OF BOTH SAID PLATES INCLINING INWARDLY AND DOWNWARDLY FROM INNER EDGES OF THE LATTER, THE CORNER LEGS AND LEG MEANS OF SAID FIRST END MEMBER BEING INTEGRALLY CONNECTED AT THEIR LOWER ENDS RESPECTIVELY TO THE LOWER ENDS OF THE CORNER LEGS AND LEG MEANS OF SAID SECOND END MEMBER BY FLAT PICKING BOX SUPPORTING BARS DISPOSED HORIZONTALLY AND HAVING VERTICAL FLANGES EXTENDING UPWARDLY FROM AND LENGTHWISE OF SAID BARS FOR RETAINING SAID BOXES ON SAID BARS, SAID FLANGES BEING INTEGRAL WITH SAID HORIZONTAL BARS AND SAID CORNER LEGS AND INTERIOR LEG MEANS RESPECTIVELY TO GIVE SAID TRAY RIGIDITY; DEEPLY TAPERING CHANNEL BOSSES INCORPORATED WITH SAID FIRST CORNER LEGS AND SAID SECOND INTERIOR LEG MEANS AND EXTENDING OUTWARDLY THEREFROM, SAID CHANNEL BOSSES OPENING UPWARDLY AND INWARDLY WHEREBY TWO TRAYS WILL INTERFIT VERTICALLY A SUBSTANTIAL DISTANCE IN NESTING RELATION, WHEN LIKE END MEMBERS ARE PLACED TOGETHER, BUT WILL BE STACKABLE WITH SAID BOSSES OF THE UPPER TRAY RESTING ON THE PLATES OF THE LOWER TRAY WHEN UNLIKE END MEMBERS ARE PLACED TOGETHER.