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Publication numberUS1716975 A
Publication typeGrant
Publication dateJun 11, 1929
Filing dateMar 5, 1928
Priority dateMar 5, 1928
Publication numberUS 1716975 A, US 1716975A, US-A-1716975, US1716975 A, US1716975A
InventorsCharles E Phillips
Original AssigneeHarry B Mahan Company
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Collapsible box
US 1716975 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)


Filed March 5, 1928 Paw/62%, C/urJwEPfi/wps, J 73/ Patented June 11, 1929.




Application filed March 5, 1928.

The object of this invention is to form a collapsible box or carton from a single flat sheet of card board, and of a triangular shape to receive a piece of p 1e which 1s the segment of a circle, or the like, for temporary storage and transportat on.

A further object is to provide such a carton which can be partially made up and the piece of pie placed in final position on the box bottom before the top and end members are closed, to avoid injury to the icing and crust of the pie, and also to adapt such partially made up cartons to convenient nesting whereby a quant1ty of them may occupy a comparatively small space w1th1n convenient location for filling.

Another object is to provide a carton which readily unfolds and in that condition forms a good lap protector or guard to receive and hold crumbs while the pie is being eaten.

I accomplish the above and other objects which will hereinafter appear, by the means illustrated in the accompanying drawing, 1n which- Fig. 1 is a plan view of a blank from which the carton shown in Fig. 3, is formed.

Fig. 2, is a perspective view of a number of cartons in partly folded condition, nested and ready to receive the contents.

Fig. 3 is a perspective View of a completely folded carton embodying my invention, and Fig. 4 is a horizontal section taken just below the carton lid showing the manner in which the carton is folded.

Like characters of reference indicate like parts in the several views of the drawing.

The shape of the card board blank is shown by full lines in Fig. 1, and the scorelines on which the material is folded are shown by dotted lines. The bottom member 1 of the carton is triangular in shape as outlined by the score-lines 2-3, 2-4 and 3-4. The three sides of the carton are designated by the numbers 5, 6 and 13, and are defined from the bottom 1 by the respective scorelines above noted. The sides 5 and 6 have the tongue extensions 14 and 16, respective- 1%, next to the side 13 to fold inwardly of t e side 12 and close the corners between the sides at their respective places. At the opposite end of side 5 is a tongue 15, in alinement with that side, and at the adjacent end of the side 6 is a tongue 17, extending laterally of the side 6 and adapted Serial No. 259,039.

to fold within the carton, between it and the side 6. The tongues 14, 15 and 16, are slightly narrower than their sides thereby forming shoulders 19, 20 and 21, and the tongues are narrowed to avoid interference with adjacent members of the folded carton. Score lines 19, 20 and 21, insure the bending of the tongues at the proper places.

A carton top 10 is separated from the side 13 by a score 8-9. The top 10 is defined by the three score-lines 7-7, 7-9 and 8-9, and it is substantially of the same size as the bottom 1.

The top 10 has side reenforcing flanges 11 and 12, which fold on the score-lines 7-8 and 7-9, inwardly of and close to the Sides 5 and 6, as shown in Figs. 3 and 4. The ends of the flanges are curved as shown to make their insertion easier in closing the carton.

In using my improved carton the sides 5 and 6 are folded up at right angles with the bottom 1, on their respective score lines, with the tongue 15 folded under the tongue 17 It is then in position to receive a piece of pie. As many cartons as desired may be nested in a compact and convenient manner as shown in Fig. 2 where four cartons are nested. The segment of pie is deposited upon the top carton on its bottom v1, with a sliding movement, throu h the open side above the member 13, wit out injury to the icing or crust of the pie; then the ears 14 and 16 are bent inwardly and the side 13 is folded up against the ears. At the same time the top 10 is swung up toward position over the bottom 1, and the flanges 11 and 12 are bent to position at right angles with the top and as the top is closed upon the sides 5 and 6, the flanges 11 and 12 are inserted in the carton against the inner sides of the members 5 and 6. I

By a reverse operation the carton is opened and access is had to its contents, and all of the bent members are flattened out and the resulting productv is used as a lap cover or guard to protect the la from broken pieces of the pie while the pie is being eaten.

While I have here shown the preferred form of my invention it is to be understood that changes, variations, and modifications can be resorted to which come within the scope of the matter herein claimed.

with the tongue 15 I claim:

1. A collapsible box formed from a unitary blank and comprising a bottom member triangular in shape, a side member for each of the three sides of the bottom defined therefrom by score lines on which the sides are folded, a pair of said sides having tongue extensions on their ends adiacent to the third side, one of said pair of sides having a second tongue extension at its other end from its first tongue folded against the inside of the'other member of the pair, and the other member of the pair of sides havtop and bottom members, flanges extending longitudinally of two sides of the top separable therefrom by score lines and curved at their ends, a box side connecting the top and bottom defined therefrom by score lines on which the members hinge, a pair of box sides connected with the bottom and defined therefrom by score lines on which the sides hinge, a tongue extension on one of the sides of said pair defined by a score line on which the tongue folds in against the inside of the other member of the pair, a tongue extension laterally of the last member of the ing a laterally extending tongue which is pair defined by a score line on which the folded over the last tongue, a triangular top member separated from the third side by a score-line, and flanges one for each of the two remaining sides of the top hinged on score-lines to the top member and adapted to be folded inside of the closed carton.

2. A collapsible box formed from a uni- I tary blank and comprising triangular shaped Y tongue folds in and down around the first tongue, and tongue extensions on the other ends of both of said pair of box sides defined by score lines on which the tongues fold in toward each other inside of the box side of the closed box.

In testimony whereof I aflix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2598627 *Oct 11, 1949May 27, 1952Robert Gair Co IncFolding carton
US4477014 *May 4, 1983Oct 16, 1984Container Corporation Of AmericaTriangular carton and opening means therefor
US4492333 *Jan 23, 1984Jan 8, 1985Champion International CorporationSingle slice pie carton with slanted openable rear wall and blank for forming same
US5098013 *Jan 15, 1991Mar 24, 1992Arvco Container CorporationSingle slice pizza carrier
US5407075 *Oct 5, 1993Apr 18, 1995Compagnie Laitiere EuropeennePack for wedge-shaped food
US6065669 *Nov 27, 1998May 23, 2000Correll; John D.Slanting-wall pizza box
US6223979 *Dec 1, 1999May 1, 2001John D. CorrellCrush-resisting paperboard clamshell carton
US20120037691 *Aug 13, 2010Feb 16, 2012Hubbard Jr James AFood carton
DE1160784B *Jan 25, 1961Jan 2, 1964Wilhelm Eisfeller FaPappschachtel
WO2002034629A1 *Oct 24, 2001May 2, 2002Money Julian David KyrleSandwich pack
U.S. Classification229/115, 229/917
International ClassificationB65D5/20, B65D5/66
Cooperative ClassificationB65D5/665, B65D5/2028, Y10S229/917
European ClassificationB65D5/20C2, B65D5/66D2