Folding boxes of the tray type

Claim 1

A TRAY OF FOLDABLE SHEET MATERIAL COMPRISING, IN COMBINATION, A BOTTOM PANEL; A PAIR OF SIDE PANELS ARTICULATED TO OPPOSITE SIDES OF THE BOTTOM PANEL; A PAIR OF END PANELS ARTICULATED TO OPPOSITE ENDS OF THE BOTTOM PANEL; AN END LINER PANEL ARTICULATED TO THE TOP OF EACH OF THE END PANELS AND FOLDED OVER THE END PANEL ON THE INSIDE OF THE TRAY; A BASE PANEL ARTICULATED TO EACH OF THE END LINER PANELS ALONG A BASE FOLD LINE DISPOSED TO EITHER SIDE OF THE TONGUE HEREAFTER RECITED, SAID END LINER PANEL HAVING A TONGUE CUT THEREFROM BY AN INTERNAL CUT EXTENDING FROM SAID BASE FOLD LINE, SAID TONGUE LYING SUBSTANTIALLY IN THE PLANE OF SAID BASE PANEL, POINTING TOWARD THE RESPECTIVE END PANEL, AND CAUSING THE SAID END LINER PANEL TO ASSUME A SLANTED POSITION, LEAVING A HOLLOW SPACE OF SUBSTANTIALLY TRIANGULAR CROSS SECTION BETWEEN END PANEL, END LINER PANEL, AND BOTTOM PANEL, INTO WHICH SPACE MERCHANDISE TO BE PACKAGED IN THE TRAY MAY BE INSERTED, AND AN INNER SIDE PANEL ARTICULATED TO THE TOP OF EACH OF THE SIDE PANELS, THE INNER SIDE PANELS BEING OF A LENGTH GREATER THAN THE HEIGHT OF THE SIDE PANELS AND BEING DISPOSED AT A SLANT TO THE SIDE PANELS AND TO THE BOTTOM PANEL, SAID INNER SIDE PANEL HAVING LATERAL LOCK TABS THEREON FOR ENGAGING THE APERTURES FORMED IN THE SAID END LINER PANELS BY SAID INTERNAL CUTS.