Gusset corner folding box

Claim 1

A KNOCKDOWN TYPE OF CONTAINER MADE FROM A CORRUGATED PAPER BOARD COMPRISING A BOTTOM, SIDE WALLS, AND A TOP HINGED TO ONE OF SAID SIDE WALLS, SAID BOTTOM SIDE WALLS AND TOP EACH BEING PART OF A SINGLE PIECE OF FOLDABLE BOARD AND EACH BEING DEFINED AT LEAST IN PART BY A FOLD LINE IN SAID BOARD, SAID SIDE WALLS COMMUNICATING WITH AN ADJACENT SIDE WALL AT A CORNER, THE FIRST SIDE WALL AT SAID CORNER BEING FORMED WITH A LOCKING PANEL THAT IS IN CLOSE PARALLEL SPACED RELATION TO THE SECOND SIDE WALL WITH WHICH IT FORMS A CORNER, SAID LOCKING PANEL AND SAID SECOND WALL HAVING TIE MEANS EXTENDING THEREBETWEEN AND FORMED THEREFROM THAT LOCKS THEM IN CLOSE PARALLEL SPACED RELATION AS AFORESAID, SAID TIE MEANS INCLUDING A TAB HAVING A STEM AND A HEAD ADJACENT THE FREE END OF THE STEM AND AN OPEN NOTCH HAVING A WIDTH AT ITS BOTTOM ADAPTED TO RECEIVE SAID STEM OF SAID TAB, SAID TAB BEING FOLDED TO EXTEND SAID STEM THROUGH SAID NOTCH ADJACENT THE BOTTOM THEREOF AND DISPOSED SAID HEAD IN JUXTAPOSITION TO SAID SECOND SIDE WALL AND SAID LOCKING PANEL, SAID STEM HAVING A LENGTH TO DISPOSE SAID HEAD ADJACENT SAID NOTCH WHEN SAID TAB IS FOLDED AS AFORESAID, SAID NOTCH HAVING A RESTRICTION IN ITS WIDTH AT A POINT SPACED FROM ITS BOTTOM AND SPACED FROM ITS TOP, SAID RESTRICTION HAVING A WIDTH THAT IS LESS THAN THE UNFLEXED WIDTH OF SAID STEM OF SAID TAB AND MORE THAN THE FLEXED WIDTH OF SAID TAB WHEREBY SAID TAB CAN BE FLEXED TO PASS SAID RESTRICTION AND ENTER THE PORTION OF SAID NOTCH BELOW SAID RESTRICTION.