US3073505A

US3073505A - Folding gift box

Info

Publication number: US3073505A
Application number: US36258A
Authority: US
Inventors: Joseph W Ullger
Original assignee: BOAS BOX CO
Current assignee: BOAS BOX CO
Priority date: 1960-06-15
Filing date: 1960-06-15
Publication date: 1963-01-15
Anticipated expiration: 1980-01-15

Description

Jan. 15, 1963 J. w. ULLGER FOLDING GIFT Box 2 Sheets-Sheet 1 Filed June 15, 1960 Jase er By I f Jan. 15, 1963 J. w. ULLGER FOLDING GIFT BOX 2 Sheets-Sheet 2 Filed June 15, 1960 INVENTOR. Jas'galihflllger, @iZzzzg United States Patent 3,073,505 FOLDING GIFT BOX Joseph W. Ullger, Elkins Park, Pa., assignor to Boas Box Company, Philadelphia, Pa., a corporation of Penn- Sylvania Filed June 15, 1960, Ser. No. 36,258 2 Claims. (Cl. 22935) This invention relates to a folding box of cardboard or the like, particularly suitable for use as a gift box. In a preferred form, the box comprises an open-top box and a lid, each made in a flat blank, cut to shape and suitably scored to provide fold lines for ready assembly. When assembled or set up into box form, the box is locked against collapse.

My invention will be clear from a consideration of the following detailed description of a preferred form selected for illustration in the drawing in which:

FIG. 1 is a blank of the open-top box itself;

FIG. 2 is a blank of the box lid or cover;

FIG. 3 is a perspective view illustrating the open-top box being asesmbled; 4

FIG. 4 is the perspective view illustrating the box lid being assembled;

FIG. 5 is a perspective view, partly broken away and in section, of the assembled lid;

FIG. 6 is a perspective view, partly broken away, of the assembled open-top box; and

FIG. 7 is a view, partly broken away, of the combined box and lid.

In describing the preferred embodiment of my inven tion, specific terminology is resorted to for the sake of clarity. However, it is not my intention to be limited to the specific terms so selected and it is to be understood that each specific term includes all technical equivalents which operate in a similar manner to acomplish a similar purpose.

Referring now to FIG. 1, the blank 10 of the open-top box is cut into the shape shown in FIG. 1 from a single sheet of cardboard or the like and is scored to provide fold lines, as indicated in FIG. 1 by the dotted lines.

Thus cut and scored, the blank 10 forms, among other things, a square bottom section 11 and two rectangular side-

wall sections

12 and 13. The end walls are each comprised of three sections, 14, 15, 16 and 17, 18, 19 respectively. The

center sections

15, 18 of the end Walls are deeply notched, as shown, forming generally triangular sections having at the apex the tab portions 25 and 2-8, respectively.

Diagonally-

opposed corner sections

14, 19 are of correspondingly similar shape relative to each other, as are the other diagonally-

opposed corner sections

16 and 17. The

corner sections

14 and 19 are provided with L-

shaped slits

24, 29 in the extended corner regions, and also with Y-

cuts

34, 39 the angled legs of which are slits extending inwardly from the notched edge.

Diagonally-

opposed corner sections

16 and 17 are provided with

ears

26, 27 extending therefrom having

slits

36 and 37 cut parallel with the outer edge of the ears. The

corner sections

16, 17 are also provided with Y-cuts 46, 47, as shown.

Referring now to FIG. 2, the blank 20 of the box lid or cover is slightly larger but otherwise is similar in shape to that of the blank 10 of the open-top box. The only difference therebetween is that, in the case of the lid blank of FIG. 2, the four

corner sections

140, 16c, 17c and 19c have portions cut away which are not cut away in the open-top box blank 10. These portions are identified in FIG. 1 by the

numerals

54, 66, 67, 59, and are indicated by the clot and dash line which extends from the 3,073,505 Patented Jan. 15, 1963 innermost limit of the Y-

cuts

34, 46, 47, 39 to the corners.-

To assemble or set up the open-top box, the blank shown in FIG. 1 is placed flat on the table or other surface and the center section 15 of the end wall is folded upwardly along the fold line 51 to a vertical position. Corner section 14 is then grasped by the left hand as illustrated in FIG. 3, and moved upwardly and inwardly causing the side wall section 12 to fold upwardly along the fold line 21 and causing the corner section 14 to fold along the line 42. The corner portion 44 of corner section 14 is passed inside section 15 and close thereto, and the corner portion 55 of tab 25 is caused to enter the slit of the Y-cut 34. The center protrusion 35 of tab 25 becomes lodged behind the corner portion of section 14 below the now vertical leg of slit 24.

Using the right hand as shown in FIG. 3, the other corner section 16 is then raised upwardly and inwardly causing the side-wall sect-ion 13 to fold upwardly along the line 31 and causing corner section 16 to fold along the line 63. The corner portion 56 of corner section 16 is passed inside and clos to section 15 and the slit portion of ear 26 enters the now vertical leg of L-slit 24, the sloping edge 76 of the ear sliding over the lower edge of the slit 24. As the sloping edge 76 of ear 26 enters slit 24, the corner portion 45 of tab 25 enters the Y-cut 46. As a final motion, the right hand presses downwardly on the corner section 16 causing the lowermost part of the L-slit 24 to rise up into the slit 36 of the Y-cut and permitting the now upper edge of ear 26 to enter the now horizontal leg of L-slit 24 and to be caught, retraction therefrom being impeded by the upper edge of the said horizontal leg of Y-slit 24.

The three

sections

14, 15 and 16 of the end wall of the box are now locked against collapse since the slit portion of ear 26 is locked against the transverse displacement and the three sections can be disassembled only by first lifting end section 16 to raise the slit portion of ear 26 sufficiently to clear the lowermost limit of slit 24. Since the normal forces tending to collapse the box do not exert an upward force on section 16, it will be seen that the box is locked against collapse.

Sections '17, 18 and 19, comprising the opposite end wall of box 10 are then assembled using the same procedure as that just described above. The open-top box is now in assembled or set-up condition.

The blank 20 of the box lid is then assembled in the manner illustrated in FIG. 4 which is similar to that just described for the box itself. As previously indicated, the only difference structurally bet-ween the box blank and the box-lid blank is in the omission from the box-lid blank of the

portions

54, 66, 67, 59 lying to the outside of the dotted lines in FIG. 1 extending from the respective corners to the innermost limit of the Y-cuts. The omission of these portions from the box lid eliminates the

tabs

54, 66, 67 and 59 which are present in the assembled open-top box, as seen clearly in FIG. 6, and which, if also present in the box lid, may tend to catch on the box tabs. The presence of these tab portions is desirable in the box itself since they add rigidity to the box. Their omission from the lid is desirable in that the flexibility of the lid is increased permitting it to be readily placed over the open-top box.

It will be seen that I have provided a two-piece folding box adapted to be readily and quickly assembled from a pair of cut and scored blanks each of which employs a minimum of material. It will be further seen that when set up, the box is locked against collapse.

While the preferred embodiment of this invention has been described in some detail, it will be obvious to one skilled in the art that various modifications may be made without departing from the invention as hereinafter claimed.

Having thus described my invention, I claim:

1. A blank of flat cardboard and the like adapted to be folded to form a rectangular box-like container, said blank comprising: a rectangular bottom section joined integrally at fold lines on each of two opposite edges by a rectangular sidewall section and integrally joined at fold lines on each of the other two opposite edges by a generally triangular section having in the apex region lateral extensions forming first and second tabs, each of said sidewall sections having a pair of generally rectangular corner sections integrally joined to said sidewall sections, one at each of the fold lines along opposite edges of the sidewall section, one of each pair of corner sections having an L-slit in a corner portion and a Y-cut in the outer edge opposite to said fold line and the other of said pair of corner sections being provided with an ear having a slit lobe and a Y-cut in the outer edge opposite said fold line, said Y-cuts, L-slit and ear being so located that when said blank is folded along its fold lines, said first tab enters said first-named Y-cut, said second tab enters said second-named Y-cut, and said ear enters said L-slit, the slit lobe of said ear thereupon being retained by said L-slit against removal by lateral force, thereby retaining the assembled container against collapse,

2. A folding box comprising an open-top box and a lid of generally similar configuration each assembled from an integral flat blank of cardboard and the like, each of said blanks comprising: a rectangular bottom section joined integrally at fold lines on each of two opposite edges by rectangular sidewall sections and joined integrally at fold lines on each of the other two opposite edges by generally triangular sections having in the apex regions horizontal extensions forming first and second tabs, each of said side-wall sections having a pair of generally rectangular corner sections joined integrally thereto, one at each of the fold lines along opposite edges of the sidewall section, one of each pair of corner sections having an L-slit in a corner portion and a Y-cut extending inwardly from an outer edge, the other of said corner sections being provided with an ear having a slit lobe and having a Y-cut extending inwardly from an out er edge, each of said blanks being adapted to be assembled into a set-up form, each of said generally triangular sections being adapted to be folded to vertical positions, each of the corner sections which have an L-slit therein being adapted to be raised upwardly and inwardly inside the vertically disposed triangular section in such manner that said first tab enters said first-mentioned Y-cut, each of said corner sections which have an ear being adapted to be raised upwardly and inwardly inside the vertically disposed triangular section in such manner that said second tab enters said second-mentioned Y-cut and said ear enters said L-slit, the slit lobe of said ear thereupon functioning to retain said ear in said L-slit against dislodgement by lateral force, thereby to maintain the assembled blank in set-up form.

References Cited in the file of this patent UNITED STATES PATENTS 2,215,907 Klein Sept. 24, 1940 2,366,419 Meller Ian. 2, 1945 2,367,675 Greenleaf Jan. 23, 1945 2,895,663 Paige July 21, 1959

Claims

2. A FOLDING BOX COMPRISING AN OPEN-TOP BOX AND A LID OF GENERALLY FLAT BLANK OF CARDBOARD AND THE LIKE, EACH OF SAID BLANKS COMPRISING: A RECTANGULAR BOTTOM SECTION JOINED INTEGRALLY AT FOLD LINES ON EACH OF TWO OPPOSITE EDGES BY RECTANGULAR SIDEWALL SECTIONS AND JOINED INTEGRALLY AT FOLD LINES ON EACH OF THE OTHER TWO OPPOSITE EDGES BY GENERALLY TRIANGULAR SECTIONS HAVING IN THE APEX REGIONS HORIZONTAL EXTENSIONS FORMING FIRST AND SECOND TABS, EACH OF SAID SIDE-WALL SECTIONS HAVING A PAIR OF GENERALLY RECTANGULAR CORNER SECTIONS JOINED INTEGRALLY THERETO, ONE AT EACH OF THE FOLD LINES ALONG OPPOSITE EDGES OF THE SIDEWALL SECTION, ONE OF EACH PAIR OF CORNER SECTIONS HAVING AN L-SLIT IN A CORNER PORTION AND A Y-CUT EXTENDING INWARDLY FROM AN OUTER EDGE, THE OTHER OF SAID CORNER SECTIONS BEING PROVIDED WITH AN EAR HAVING A SLIT LOBE AND HAVING A Y-CUT EXTENDING INWARDLY FROM AN OUTER EDGE, EACH OF SAID BLANKS BEING ADAPTED TO BE ASSEMBLED INTO A SET-UP FORM, EACH OF SAID GENERALLY TRIANGULAR SECTIONS BEING ADAPTED TO BE FOLDED TO VERTICAL POSITIONS, EACH OF THE CORNER SECTIONS WHICH HAVE AN L-SLIT THEREIN BEING ADAPTED TO BE RAISED UPWARDLY AND INWARDLY INSIDE THE VERTICALLY DISPOSED TRIANGULAR SECTION IN SUCH MANNER THAT SAID FIRST TAB ENTERS SAID FIRST-MENTIONED Y-CUT, EACH OF SAID CORNER SECTION WHICH HAVE AN EAR BEING ADAPTED TO BE RAISED UPWARDLY AND INWARDLY INSIDE THE VERTICALLY DISPOSED TRIANGULAR SECTION IN SUCH MANNER THAT SAID SECOND TAB ENTERS SAID SECOND-MENTIONED Y-CUT AND SAID EAR ENTERS SAID L-SLIT, THE SLIT LOBE OF SAID EAR THEREUPON FUNCTIONING TO RETAIN SAID EAR IN SAID L-SLIT AGAINST DISLODGEMENT BY LATERAL FORCE, THEREBY TO MAINTAIN THE ASSEMBLED BLANK IN SET-UP FORM.