Interfitting carton blanks

Claim 1

A CARTON BLANK MADE FROM CARDBOARD OR SIMILAR MATERIAL AND SHAPED TO HAVE EDGE PORTIONS THEREOF WHICH ARE COMPLEMENTARY TO EDGE PORTIONS OF OTHER BLANKS OF LIKE SHAPE THEREBY TO PERMIT CUTTING OF THE BLANKS FROM A SHEET OR WEB WITH A MINIMUM OF WASTAGE, SAID BLANK COMPRISING A FIRST OBLONG RECTANGULAR SIDE PANEL DISPOSED BETWEEN FIRST AND SECOND OBLONG RECTANGULAR MAIN PANELS AND CONNECTED TO THE LONGER SIDES THEREOF BY HINGE CONNECTIONS, A SECOND OBLONG RECTANGULAR SIDE PANEL LOCATED BETWEEN THE FIRST MAIN PANEL AND AN OBLONG RECTANGULAR SEAM-FORMING FLAP AND CONNECTED TO LONGER SIDES OF SAID PANEL AND FLAP BY HINGE CONNECTIONS, A CLOSURE TAB HINGEDLY CONNECTED TO EACH OF THE SHORTER SIDES OF THE FIRST AND SECOND SIDE PANELS, A PAIR OF OBLONG RECTANGULAR END PANELS CONNECTED BY HINGE CONNECTIONS ONE TO EACH SHORTER SIDE OF ONE OF SAID MAIN PANELS, EARS CONNECTED BY HINGE CONNECTIONS ONE TO EACH SHORTER SIDE OF EACH END PANEL, AND OBLONG RECTANGULAR CLOSURE FLAPS CONNECTED BY HINGE CONNECTIONS ONE TO EACH OF THE END PANELS ALONG A LONGER SIDE THEREOF, EACH OF SAID EARS BEING DEFINED BY THREE EDGES OF WHICH ONE EDGE HAS A PORTION WHICH IS PARALLEL WITH THE HINGE CONNECTION FOR THE EAR AND A PORTION WHICH SLOPES FROM SAID PARALLEL PORTION TOWARDS THE HINGE CONNECTION AND JOINS A SECOND EDGE FORMED IN EXTENSION OF THE HINGE CONNECTION FOR A CLOSURE FLAP, AND THE THIRD EDGE CONVERGES TO SAID PARALLEL PORTION OF THE FIRST EDGE FROM AN EXTREMITY OF THE HINGE CONNECTION FOR AN END PANEL, AND EACH CLOSURE TAB HAVING THREE EDGES OF WHICH A FIRST EDGE IS PARALLEL WITH THE HINGE CONNECTION FOR THE TAB, A SECOND EDGE INCLUDES A PORTION WHICH IS FORMED IN EXTENSION OF THE HINGE CONNECTION OF A SIDE PANEL AND HAS A LENGTH EQUAL TO THAT OF A SHORTER SIDE OF A CLOSURE FLAP, AND THE THIRD EDGE IS SHAPED TO CONFORM WITH SAID THIRD EDGE OF AN EAR AND THE PARALLEL PORTION OF THE FIRST EDGE OF THE EAR.