Divisible case

Claim 1

A DIVISIBLE RECTANGULAR CASE COMPRISING A SINGLE BLANK OF FIBREBOARD CUT AND FOLDED TO PROVIDE TWO PAIRS OF OPPOSED SIDE WALLS FORMING THE FOUR LATERAL SIDES OF SAID CASE AND TOP AND BOTTOM CLOSURE FLAPS EXTENDING FROM THE UPPER AND LOWER EDGES OF EACH OF SAID SIDE WALLS, THE CLOSURE FLAPS ON EACH PAIR OF OPPOSED SIDE WALLS BEING FOLDABLE TOWARD EACH OTHER TO CLOSE THE UPPER AND LOWER SIDES OF SAID CASE WITH THE FLAPS ON ONE PAIR OF OPPOSED SIDE WALLS OVERLAPPING THE FLAPS ON THE OTHER PAIR OF SAID SIDE WALLS, A PAIR OF PARTITION BLANKS IN FACE TO FACE RELATION EXTENDING BETWEEN THE SIDE WALLS OF ONE PAIR THEREOF AND INTERMEDIATE THE SIDE WALLS OF THE OTHER PAIR THEREOF, MEANS SECURING SAID PAIR OF BLANKS TO SAID ONE PAIR OF SIDE WALLS, THE CLOSURE FLAPS ON SAID ONE PAIR OF OPPOSED SIDE WALLS BEING OUTERMOST RELATIVE TO THE INSIDE OF THE CASE, THE SIDE WALLS OF SAID ONE PAIR EACH BEING FORMED WITH A SLOT SUBSTANTIALLY IN REGISTER WITH THE PLANE OF DIVISION BETWEEN SAID PAIR OF PARTITION BLANKS TO ENABLE INSERTING A KNIFE THROUGH THE SLOT IN ONE SIDE WALL OF SAID ONE PAIR AND BETWEEN SAID PARTITION BLANKS FOR CUTTING ACROSS THE CLOSURE FLAPS TO THE SLOT FORMED IN THE SIDE WALL AT THE OTHER SIDE OF SAID CASE FOR THEREBY DIVIDING SAID CASE IN A PLANE DISPOSED BETWEEN SAID PARTITION BLANKS, SAID MEANS SECURING SAID PAIRS OF PARTITION BLANKS TO SAID ONE PAIR OF OPPOSED SIDE WALLS BEING A PAIR OF COPLANAR FLAPS INTEGRAL WITH SAID BLANKS, RESPECTIVELY, AND AGAINST THE OPPOSEDLY FACING SURFACES OF SAID ONE PAIR OF OPPOSED SIDE WALLS AT OPPOSITE SIDES OF SAID SLOTS FORMED THEREIN, SAID COPLANAR FLAPS HAVING EXTENSIONS AT THEIR UPPER ENDS EXTENDING OVER AND SECURED AGAINST THE TOP CLOSURE FLAPS ON SAID ONE PAIR OF SIDE WALLS FOR FOLDING WITH SAID LAST MENTIONED CLOSURE FLAPS TO POSITIONS EXTENDING ANGULARLY OUTWARDLY OF SAID CASE TO ENABLE FILLING SAID CASE PAST SAID LAST MENTIONED FLAPS FREE FROM OBSTRUCTION BY THE UPPER ENDS OF SAID COPLANAR FLAPS.