Collapsible reuseable carton

Claim 1

A one-piece blank for forming a collapsible carton, said blank comprising a sheet of board divided by parallel transverse score lines into a front wall, an end wall, a rear wall and a second end wall, said sheet having a pair of parallel longitudinal score lines perpendicularly intersecting all of the aforesaid score lines to define bottom closure panels corresponding to said front, rear and end panels and integral therewith and with each other, and top closure panels corresponding to said front, rear and end panels and integral therewith; said end panels having medial score lines extending throughout said end panels and throughout the top and bottom panels integral therewith; the bottom-forming panels which form extensions of said front and rear wall panels having at their ends diagonal score lines extending inwardly and downwardly from the intersections of said transverse score lines with one of said longitudinal score lines; and combined interlocking and hinge means formed in each of said last-named bottom-forming panels to coact one with the other to secure said panels together when said carton is erected and to provide a hinge connection between said bottom-forming panels when erecting or folding the carton; said interlocking and hinge means including a slot formed inwardly of said bottom-forming panel connected to said front wall centrally of the carton and a locking tab formed by cutout portions in the bottom-forming panel connected to said rear wall.