US1383714A - Folding box - Google Patents

Description

S. FREUND.

FOLDING BOX.

APPLICATION FILED DEC. 12, |919.

1,388,7 1 4. y Patented July 5, 1921'.`

Hilf a l l 'h5 l 6W i 11 i :fr l l I' E 5 D n M15 nl 195 J5 VJ9 73 fzzyerzaramg/{M} SAMUEL FREUND, 0F CHICAGO, ILLINOIS.

FOLDING BOX.

Application led December 12, 1919. Serial No. 344,382.

To all whom t may concern.'

ABe it known that l, SAMUEL FREUND, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Folding Boxes, of which the following is a specification. g

My invention relates to paper boxes and particularly to that class in which the container member and the cover member are each formed from a single piece of paper, ber, or other suitable material bent to form the sides and ends, together with means for interlocking such sides and ends at the corners. As at present constructed lock corner boxesl have the tendency to break in the corners, the locking tongue sliding out of the receiving slot or breaking off in the box after insertion. An important object of my invention is therefore to overcome the weaknesses in prior boxes by improved corner locking mechanism.

Another object of the invention is to provide such arrangement and shape of tongue and slot construction that the locking tongues will under pressure automatically guide themselves into the slot and will thereafter form strong interlocking engagement with the material surrounding the slot.

Another object of the invention is to provide such construction and arrangement that the box will be heavily reinforcedat the corners where strength is mostly necessary.

The above and other features of lmylinvention are clearly disclosed on the accompanying drawing in which Figure 1 is an end elevational view of the box cover showing one corner partly open,

Fig. 2 is yan end elevational view of the container member with one end in vertical section to show theinterlocking engagement at the corner,

Fig. 3 is a plan view of the formed blank of paper from which the cover member is 'folded up, and

Fig. 4 is a plan view of the paper blank from which the body or container member is folded up.

TheJ cover member and container member are each formed from a single piece of paper or other suitable material. A rectangular piece of paper for the cover memberis creased longitudinally near its sides along the lines 5 `and 6, and is creased or scored transversely near its ends along the lines 7 andy 8f Ille score lines divide the blanks into the rectangular body part 9, the sides 10 and 11 and the ends-12 andl 13. These ends are cut along lineswhich are coincident with the longitudinal scoring lines 5 and 6, such cutting being indicated by the reference cliaractei'14, the cutting extending as far as the transverse score lines 7 and 8 respectively. Cutting along the line 14 produces the corner sections or flaps 15 which form continuations of the sides10 and 11 and are hinged at the score lines 7 and 8 respectively. Extending from substantially the center of the hinge line of each corner and diagonally toward the outer point of such corner is a slot v16, the laterally extending slot section 16 forming a continuation of the slot 16, the two forming a more or less L shaped slot which surrounds a tongue 17. Eachof the sides 12 and 13 is .cut transversely a distance inwardly from each corner thereof, the cut being represented by the character `18. The outer end of the paper section 'between the cut and the adj acent edge cf the sides is cut away to leave a shorttongue or stub 19, cutting being on the bias so as to leave the inclined end edge 2O on each tongue or stub. The cuts 18 are more in the nature of slots,` that is they have width.

The arrangement forV the container member shown in Fig. 4 is the same as that for the cover member of Fig. 3 except that the location of the cuttings is different. Instead of cutting the ends 12 and 13 as at 14, the sides 10 and 11 are cut in coincidence with the folding lines 7 and 8 as indicated by the reference character 21, this leaving the corners or liaps 22 Vhinged to the ends 12 and 13 instead of to .the'sides VThe slots 23, 23 inthe corners extend fro'rnfthefoldi ing lines 5 and 6 respectively, and the tongues 24 corresponding to .the tongues 19 'of the cover member are formed at the ends of the sides 10 and 11.

To form the cover member vthe blank of Fig. 3 is folded along the lines 5, 6, 7 and 8 into position at right angles with the body section 9. The corners 15 which were also folded along the lines 7 and 8 are placed on the inside. The tongues '17 are then de- `flected outwardly a distance so that the stubs the slot as the sides and ends of the container part are brought together into positions at right angles with each other. As soon as the point of a stub leaves the end e of a corresponding slot the stub drops through the slot, the tongues 17 and the stubs 19 at the various corners being then in interlocking engagement which can only b broken by forcible relative movement of the sides and ends in directions at right angles with the body section 9.

To form the other member of the box the blank shown in Fig. 4 is folded along the lines 5, 6, 7 and 8 and the corners 22 ar arranged against the inside of the side walls 10 and 11. During shifting of the corners into such position the. stubs 24 pass through the slots 23, 23', the tongues and stubs being` finally brought into interlocking engagement.

As the corners 15 of the container part are held against the ends 12 and 13, and the corners 22 of the cover part are held against the sides 10 and 11, the box structure is heavily reinforced at its corners where the greatest strength and rigidity is required. The stubs 19 and 24 being short and the tongues 17 being likewise short, and these members being held together in interlocking engagement after folding, the stubs and tongues cannot readily break off and their disengagement is prevented except by relative movement between the corners and box sides in a direction at right angles to the body sections of the members. 1 thus produce a very strong and reliable box having maximum capacity for the amount of paper used for its construction. improved interlocking arrangement is applicable on different styles of boxes.

1 claim as follows 1. 1n a foldable paper box, side and end walls, corner sections hinged at the ends of said walls, a slot in each corner section and a tongue surrounded by such slot, and a stub formed along the edge of tbe adjacent side of the box for engaging in' said slot, said stub having an inclined edge for facilitating' its passage into said slot, said tongue and stub interlocking after passage of the stub through said slot.

2. A paper box member folded longitudinally and transversely near its edges to form sides, one set of sides being cut in line coincident with the folding line for the other side to leave corner sections, said corner sections having each an L shaped slot, the side sections between said corner sections having sections cut away to leave stubs formed along theedge of the sectiomsaid stubs extending through said slots to have interlocking engagement with the corner sections.

3. A paper box member formed from a rectangular sheet of paper folded transversely and longitudinally near its ends to :user-5,714c

form end and side sections, the end sections being cut across coincident with the folding line for the side sections, whereby the ends are divided into central sections and corner sections, said corner sections having slots extending outwardly from their folding lines, and stubs formed along the edge of the sides of the end center sections for extending through said slots and interlockingly engaging with the corner sections when the paper blank is folded. n

4. A paper box member formed by folding a rectangular paper blank longitudinally and transversely to form side and end walls, the end walls being cut transversely in line coincident with the folding lines of the side walls whereby such end walls are converted into central sections and corner sections, each corner section having a slot extending diagonally from its base toward its outer point, said center sections being cut away at their outer corners to leave stubs formed along the edge, said stubs passing through said slots for interlocking engagement with said corner sections when the paper blank is folded up.

5. A paper box member formed by folding a rectangular paper blank longitudinally and transversely to form sideand end walls, the end walls being cut transversely in line coincident with the folding lines of the side walls whereby such end walls are converted into central sections and corner sections, each corner section having a slot extending diagonally from its base toward its outer point, said center sections being cut away at their outer corners to leave stubs, 'said stubs formed along the edge passing through said slots for interlocking engagement with said corner sections when the paper blank is folded up, the ends of said stubs being inclined whereby to facilitate entrance of said stubs vthrough said slots.

6. A. blank for forming paper box members in the form of a rectangular sheet, longitudinal and transverse scoring lines near the ends of said sheet for determining the end walls, said sheet at opposite ends being cut transversely coincidentally with the foldline wherebyyto divide each end section into a middle section and corner sections, the corner sections having diagonal slots extending from their bases toward their outer point, and stubs formed along the edge at the outer corners of the adjacent center section forentering said slots and interlockingly engaging with the corner sections.

7. A. paper box` member folded longitudinally and transversely near its edges to form sides, one set of sides being cut in line coincident with the folding line for the other side to leave corner sections, said corner sections having each an L shaped slot, the side sections between said corner sections'having sections cut away to leave stubs formed along the edge, said stubs extending through said slots to have a rigid interlocking engagement with the corner sections.

8. A paper box member folded longitudinally and transversely near its edges to form sides and a body section, one Set of sides being cnt in line coincident With the folding line for the other Side to leave corner sections, said corner sections having each an L shaped slot, the side sections between said corner Sections having Sections out away to leave stubs formed along'the edge, said stubs extending through said slots to have a rigid interlocking engagement With the corner sections and adapted to be disengaged only by a relative movement between the corners 15 and box Sides in a direction at right angles SAMUEL FREUND.

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