US3089631A

US3089631A - Folding paper boxes

Info

Publication number: US3089631A
Application number: US796478A
Authority: US
Inventors: Walter J Tyrseck; Robert A Hackenberg
Original assignee: Robertson Paper Box Co Inc
Current assignee: Robertson Paper Box Co Inc
Priority date: 1959-03-02
Filing date: 1959-03-02
Publication date: 1963-05-14
Anticipated expiration: 1980-05-14

Description

May 14, 1963 w. J. TYRsEcK ETAL 3,089,631

FOLDING PAPER BOXES Filed March 2. 1959 INVENToRs WALTER J. TvRsEcK 5 ROBERT A. HACKENBERG United States Patent O 3,089,631 FLDING PAPER BOXES Walter J. Tyrseck, Montville, and Robert A. Hackenberg,

Norwich, Conn., assignors to Robertson Paper Box Company Incorporated, Montville, Conn., a corporation of Connecticut Filed Mar. 2, 1959, Ser. No. 796,478 8 Claims. (Cl. 229-16) This invention relates to folding paper boxes.

More particularly, the invention is concerned with paper boxes having internal shelf structures and with an improved construction thereof in which the Ishelf is integral with the box generally.

It is an object of the invention to provide a box of the character indicated which can lbe manufactured on high speed machinery and shipped in collapsed condition for setting up by the customer, and in which the shelf structure sets up automatically along with the bottom.

Another object of the invention is to provide a box structure of the type indicated in which the blank is of convenient dimensions and form for economically cutting from rectangular sheets of board.

Still another object of the invention is to provide a box of the type indicated in which the shelf structure is incorporated with the bottom construction in such a manner that the two coact reciprocally for holding each other in position and rigidifying and strengthening the box as a whole.

With the foregoing and other objects which will appear in the following full description in mind, the invention consists in the combination and arrangements of parts and details of construction which will now rst be described with reference to the accompanying drawing, and the features forming the invention will then be pointed out more particularly in the appended claims.

In the drawing:

lFIG. l is an isometric of a box or carton embodying the invention in a preferred forni;

FIG. 2 is a flat View of the blank used in making the box of FIG. l;

IFIG. 3 illustrates the folding of the blank of FIG. 2;

FIG. 4 is a bottom view of the box of FIG. l; and

FIG. 5 is a section on the line 5-5 of FIG. -1.

The box of the invention comprises a series of aligned wall panels and

glue flap

1, 3, 5, 7 and 9 foldable on scored

hinge lines

2, 4, 6 and 8` to form a rectangular box structure. Along one side of this line of panels (the top of the box) are

flaps

11, 15, 13 and 17 foldable on scored hinge lines i, 12, 14 and 16 to form a top closure.

Panels

3, 5 and 7 carry -ap elements identified by odd numerals 19 to 27 and foldable on the scored hinge lines identified by even numerals from 18 to 26. These elements together with panel 29 joined to the Wall panel 1 on scored hinge line 28 form a self-locking automatic setting up bottom for the box and the panels identified by odd numerals 31 to 39, and foldable on scored hinge lines identied by even numerals from 30 to 38, are carried by this panel 29 in such a manner as to form the contents holding shelf, which shelf, together with the self-locking bottom, are folded in collapsed form and set up automatically and as a unit when the box is to be used.

The panels 33, etc. to the left of fold line 32 in FIG. 2, are first folded over as a unit on hinge line 32 so that these panels overlie the

panels

29 and 31. The blank is then folded on the lines 18-26-22-28 as indicated in FIG. 3, the backs (in FIG. 2) of

panels

27, 29 being spotted with adhesive as indicated at B and C, as well as the back A (in FIG. 2) of the glue flap panel 35. This brings the adhesive surface of panel 35 against panel '1, joining the flap to this panel.

The partially folded blank of FIG. 3 is now folded over successively on fold line 2 and then on fold line 6, which brings fold line 8 over the end of the back (FIG. 2) of wall panel 1 and joins the glue flap 9, the surface of which is previously prepared with adhesive, 'to the back of panel 1. Preliminary to these folds, the

aps

21 and 25 are folded back on their

fold lines

20 and 24, as indicated in FIG. 3.

The collapsed box is now completed 4and it may be set up by applying pressure at its opposite ends (i.e., at fold lines 2 and 6). The triangular bottom ilap element 21 will have been adhesively joined to bottom flap panel 27 and bottom flap element 25 will have been adhesively joined to the bottom element 29', the triangular ap 21 lying folded over against the triangular gusset 19 and flap 25 similarly lying flat against the gusset 23. The straightening out of the box from collapsed condition into the rectangular form of FIGS. 1, 4 and 5 brings

panels

5 and 7 into right angles with each other, thus pulling down the structure composed of gusset panel l19 and bottom panel 27 into perpendicularity with these two walls and similarly pulling down panel 29 and gusset panel 23 into perpendicularity with side walls 1 and 3, so that the

gusset panels

19, 23 and

bottom panels

27, 29 form a at bottom as shown in FIG. 4, in which Vpanel 29 which is full width of the box, overlies the other elements. At the 4same time, the pulling down of bottom panel 29 from the broken line position indicated in FIG. 5 into the full line position of that ligure, lowers panels 311 and 33 into the full line position of FIG. 5, so that panel 33 forms a shelf extending across the box and spaced from its bottom. This shelf structure is supported along one edge by the glueing of ap 35 to panel 1 and along the opposite edge by panel 31 which lies against 'Wall panel 5 and rests upon the bottom structure of the box. The ends of the shelf are also supported by

flaps

37 and 39 which also extend down to the box bottom. The shelf 33` may be provided with openings or other article holding means, such as indicated by the circular cut outs C-1 and C-Z which may take, respectively, a pair of containers, as, for example, a can or other container for material in granular form and a material in liquid form to be mixed together for use in patching or similar operations. Bottom panel 29 preferably has a central projection 41 extending beyond the fold line 30' as indicated and fold line 26- has a central cut out 42 for accommodating this projection, as indicated in FIG. 5. As will be apparent, projection 41 extending under the lower edge of side wall 5 generally holds the shelf structure down in the position of FIG. 5 and in so doing also holds the bottom in set up and fiat condition. As will be observed,

panels

29 and 31 are recessed to accommodate ilap 39 in folding the elements along fold line 2, since flap 39 is initially folded through two right angles and then folded back through one right angle in setting up the box. Since flap 37 is not folded until the box is set up no such accommodation is required for this element.

What is claimed is:

1. A folding paper box comprising four wall elements hingedly joined for collapsing into a flat structure and opening up into a rectangular structure upon application of pressure to the ends of said fiat structure, an automatically setting up bottom for the said box comprising a pair of bottom panels joined to each other and to a pair of adjacent side walls and a second pair of bottom panels joined to each other and fto the other two side walls, each pair of bottom panels being foldable up inside the collapsed structure and opening out into perpendicular relationship to the side walls to which joined when the box is set up, one of said bottom panels extending substantially full width of the box, and a shelf structure comprising a shelf lwithin the box and spaced from its bottom,

a glue flap along one edge of the said shelf joining it to a wall of the said box and a supporting panel joined to the opposite edge of the said shelf and connecting to the said full width bottom panel, whereby the said shelf structure folds up flat inside the collapsed box along with the bottom panel to which attached and moves downwardly therewith when the box is set up.

2. A folding paper box comprising four wall elements hingedly joined for collapsing into a flat structure and opening up into a rectangular structure upon application of pressure to the end of said flat structure, an automatically setting up bottom for the said box comprising a pair of bottom panels joined -to each other and to a pair of adjacent side walls and a second pair of bottom panels joined to each other and to the other two side walls, each pair of bottom panels being foldable up inside the collapsed structure and opening out into perpendicular relationship to the side walls to which joined when the bor isset up, the side wall adjacent one of said bottom panels having a slit adjacent the hinge line of the said bottom panel, the opposite said bottom panel extending substantially full width of the box and having a central projection passing through said slit to lock the bottom in position, and a shelf structure comprising a shelf within the box and spaced from its bottom, a glue flap along one edge of the said shelf joining it to a wall of the said box and a supporting panel joined to the opposite edge of the said shelf and connecting to the said full width bottom panel, whereby fthe said shelf structure folds up flat inside the collapsed box along with the bottom panel to which attached and moves downwardly therewith when the box is set up.

3. A folding paper box comprising four wall elements hingedly joined for collapsing into a flat structure and opening up into a rectangular structure upon application of pressure to the ends of said flat structure, an automatically setting up bottom for the said box comprising a pair of bottom panels joined to each other and to a pair of adjacent side `walls and a second pair of bottom panels joined to each other and -to the other two side walls, each pair of bottom panels comprising a triangular panel joined by hinge lines to a side wall panel and to the other bottom panel of the said pair, each pair being foldable up inside the collapsed structure and opening out into perpendicular relationship to the side walls to -which joined when the box is set up, one of said bottom panels extending substantially full width of the box, and a shelf structure cornprising a shelf within the `box and spaced from its bottom, a glue ap along one edge of the said shelf joining it to a wall of the said box and a supporting panel joined to the opposite edge of the said shelf and connecting to the said full width bottom panel, whereby the said shelf structure folds up flat inside the collapsed box along with the bottom panel to which attached and moves downwardly therewith when the box is set up.

4. A folding paper box according to claim 3, in which the said shelf substantially touches all four walls of the box and has flaps hingedly joined to its remaining two sides and extending downwardly to the bottom of the box whereby the said shelf ends are supported and stitfened.

5. A folding paper box comprising four walls hingedly joined to form a rectangular box structure collapsible by folding on two alternate hinges to lie at with two of the said walls overlying the other two said walls, a selferecting bottom comprising bottom panels hingedly joined to the said walls and foldable therebetween when the box is collapsed, one of the said bottom panels extending substantially full width of the box, a shelf hingedly fastened along one edge to the wall carrying the last mentioned bottom panel and in spaced relation to the bottom of the said wall, and a shelf supporting panel hingedly joined to the free edges of the said bottom panel and shelf whereby the shelf folds up inside the box when collapsed and is pulled down into position parallel to the bottom when the box is set up.

6. A folding paper box according to claim 5, in which the said last mentioned bottom panel has a projection midway of its free edge and the box has a slit accommodating the said projection in set-up position.

7. A folding paper box blank comprising an aligned series of four wall panels and a glue flap for forming a box structure, top closure flap elements along one edge of the said series and bottom closure elements along the other said edge, the said bottom closure elements comprising generally rectangular panels joined to the first and third of the said wall panels and triangular gusset panels joined to the second and fourth said wall panels, glue flaps for joining the gusset panel on the second said wall panel to the bottom panel on the rst said wall panel and for joining te gusset panel on the fourth said wall panel to the bottom panel on lthe third said wall panel, the lbcttom panel attached to .the said first wall panel having a width substantially equal to the length of the second wall panel whereby the said bottom panel will extend substantially completely across the box when set up, a shelf structure hingedly `joined to the edge of the last mentioned bottom panel and comprising in order a supporting panel, shelf panel and glue Hap, the said shelf structure being foldable on the line joining the supporting panel and shelf panel for joining the glue flap to the said first wall panel.

8. A folding paper box blank according to claim 7, in which the said shelf panel also has end supporting aps hingedly joined to its ends and the `first said shelf supporting panel and last mentioned bottom panel have a recess in their edges adjacent the said second wall panel for accommodating a said shelf supporting ap in folded position when the ybox is lcollapsed.

Claims

2. A FOLDING PAPER BOX COMPRISING FOUR WALL ELEMENTS HINGEDLY JOINED FOR COLLAPSING INTO A FLAT STRUCTURE AND OPENING UP INTO A RECTANGULAR STRUCTURE UPON APPLICATION OF PRESSURE TO THE END OF SAID FLAT STRUCTURE, AN AUTOMATICALLY SETTING UP BOTTOM FOR THE SAID BOX COMPRISING A PAIR OF BOTTOM PANELS JOINED TO EACH OTHER AND TO A PAIR OF ADJACENT SIDE WALLS AND A SECOND PAIR OF BOTTOM PANELS JOINED TO EACH OTHER AND TO THE OTHER TWO SIDE WALLS, EACH PAIR OF BOTTOM PANELS BEING FOLDABLE UP INSIDE THE COLLAPSED STRUCTURE AND OPENING OUT INTO PERPENDICULAR RELATIONSHIP TO THE SIDE WALLS TO WHICH JOINED WHEN THE BOR IS SET UP, THE SIDE WALL ADJACENT ONE OF SAID BOTTOM PANELS HAVING A SLIT ADJACENT THE HINGE LINE OF THE SAID BOTTOM PANEL, THE OPPOSITE SAID BOTTOM PANEL EXTENDING SUBSTANTIALLY FUL WIDTH OF THE BOX AND HAVING A CENTRAL PROJECTION PASSING THROUGH SAID SLIT TO LOCK THE BOTTOM IN POSITION, AND A SHELF STRUCTURE COMPRISING A SHELF WITHIN THE BOX AND SPACED FROM ITS BOTTOM, A GLUE FLAP ALONG ONE EDGE OF THE SAID SHELF JOINING IT TO A WALL OF THE SAID BOX AND A SUPPORTING PANEL JOINED TO THE OPPOSITE EDGE OF THE SHELF AND CONNECTING TO THE SAID FULL WIDTH BOTTOM PANEL, WHEREBY THE SAID SHELF STRUCTURE FOLDS UP FLAT INSIDE THE COLLAPSED BOX ALONG WITH THE BOTTOM PANEL TO WHICH ATTACHED AND MOVES DOWNWARDLY THEREWITH WHEN THE BOX IS SET UP.