US 2277773 A
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Description (OCR text may contain errors)
March31,1942. J. H. MCGRATH 2,277,773
CARDBOARD BOX Filed July 22, 1940 INVENTOR ATTORNEY Patented Mar. 31, 1942 orifice CARDBOARD BOX John H. McGrath, Seattle, Wash. Application July 22, 1940, Serial No. 346,685
This invention relates to the .making of boxes, or containers, from cardboard, or from any similar flexible material that is adapted to be cut, scored, glued and shaped as hereinafter described. More particularly, the invention relates to the making of heart-shaped boxes.
It is the principal object of this invention to expedite the manufacture -and to reduce the cost of making heart-shaped boxes from cardboard, or similar material by the provision of a novel manner of cutting, forming, assembling and uniting the parts thereof.
More speclcally stated. the objects of the present invention reside in the provision from cardboard, of a heart-shaped box body, comprising a bottom forming section that is of heart shape, and side wall forming sections integral therewith; these parts being die-cut from a fiat blank of material, and so scored, or creased, as to provide accurate and easy bending of the side wall forming portions to upright position for shaping to the configuration or curvature of the edges of the bottom section and for a secure and eiective' connection therewith whereby to retain the box. body in shape for its intended uses.
It is a further object of 'this invention to provide a box body, as above stated, wherein the side wall forming portions are equipped at the lower edges of their free ends with integral tabs, and the bottom forming section is formed with recesses, opening to the edge thereof at such locationand so designed as to receive the said tabs of the wall sections therein in interlocked holding connections that insure the permanency of the wall structure.
Still further objects of the present invention reside in the combination of a container or box body, formed in the m-anner above stated, with a base member that is designed to strengthen asY well as to enhance the appearance of the box by the provision of a projecting ange about the side Walls.
It is a stm further Object of the invention to provide a box body structure that can be made either manually or mechanically, with a minimum number of operations. l
Other objects of the inventionv reside in the various 'details of construction and combination of parts, as will hereinafter be fully described.-
In accomplishing these and other objects of the invention, I have provided the improved details of construction, the preferred forms of which are illustrated in the accompanying drawthey would appear when die-cut from a at sheet of material preparatory to being shaped and joined together.
Fig. 2 is a plan View of the box body with side Walls folded upwardly and shaped to the curvature of the bottomsection and interlocked therewith, also showing the box body applied to a base section that provides the projecting flange.
Fig. 3 is a plan view of the iiange forming base piece.
Fig, 4 is a perspective view of the present box body structure as assembled upon the flange forming base section.
Fig. 5 is a vertical cross section of the box as seen on line 5-5 in Fig. 2.
Fig. 6 is a perspective view of the interior of the box body particularly illustrating the connection of the ends of the wall forming strips.
Explanatory to the present invention, it will here be stated that boxes and containers of the present kind are intended to comprise a bottom portion and a cover portion.V However, since both of these parts would be identical in construction with the exception that the cover section would be made slightly larger in order that it may t telescopically overthe bottom section, I have, in the following, described only the manner of constructing a bottom portion, with the understanding that this description would apply equally to the formation of the cover portion.
It will be mentioned also that I make no broad claim to the use of the flange base except in combination with the present box body structure, since it is a common practice in the art to use such a piece. However, to myknowledge it is the general practice to provide thewall forming members with edge tabs for glued. connection with the bas'e ange, then to overlie the tabs vwhen glued in place, with a false bottom insert that is fitted into the box body. To my knowledge, no box body has heretofore been made from a one-piece, heart shaped bottom section, and side wall sections that are integral. therewith in their original blanked out form and adapted to be shaped without deviation, to the curvature of the edges of the bottomand secured functionally thereto through the mediacy of interlocking parts that insure the stability of the structure.
Referring more in detail to thedrawing- The bottom section of the present box body is designated by reference numeral I0 and this section has a shape that is generally-designated as heart-shaped, as will be understood by reference to Fig. 1. The opposite side Wall forming portions designed for completion of the heart- 'shaped box body are designated, respectively, by
reference numerals Hand I2, and are shown asbeing in the form of straight,vnarrow strips of' material extending from the point end of the section Il! in angular divergence at opposite sides scoring 2 I.
of the latter. Itis 'a feature o! this invention that these strips II and I2 are integral with the bottom section Ill. and are disposed at opposite sides of that portion of the bottom section that is immediately adjacent the point, and which is designated at I3 inFlg. 1.
It is intended, especially in the mechanical production of these boxes. that a die shall be used to stamp, or cut out the entire bottom wall section I0, including its component side wall forming .portions II and I2, from one blank or sheet of material, and that the formation of these parts, ready for assembly, shall whenever practical be effected in a single operation. Furthermore, it is intended that suitable means shall be provided whereby, in the same operation, certain parts shall be scored, or creased at predetermined places to facilitate the subsequent folding and interconnection of parts. Also, that by the same operation, the wall forming strips II and I2 shall be equipped with the previously mentioned securing tabs and the bottom section shall be notched or recessed to receive vthe tabs.
In order that the side wall sections II and I2 may be folded upwardly perpendicular with reference to the bottom section I0, substantially straight lines of scoring as at Il and I4' are formed, extending from the extreme point of the heart-shaped piece I to the opposite sides of the section, merging into the curved opposite side edges I5 and I5 of the section IIJ. By reason of these lines of scoring being straight, the strips Il and I2 may be folded along these lines to a perpendicular position relative to the base I0 without warpingand the free ends may then be easily bent laterally to conform to the curvature of the side edges I5 and I5' of the piece, and about the substantially circularly curved top edges of the opposite lobes of the heart-shaped piece. By cutting these strips II and I2 to an exact length, they may be brought together at the convergence of the curved edges I5 and I 5' within the vertex of the recess formed between the two lobes of the heart-shaped body.
By reference more particularly to Fig. l, it
will be observed that the side wall forming strip tions of'the wall forming strips II and I2 as applied about the curved portion at the topo! the heart-shaped section Il, I have provided dove-tailed recesses 3l and 3l' in the latter, opening to the ltop .edgesof the two lobes of the heartshaped piece, and have formed the strips II and I2 with integral dove-tailed tabs 3| and 3|' extended at such position as to be tted in these recesses. The tabs are set oi! by lines of scoring 32 which provide for their being bent at right angles with reference to the wall strips for pressing into the recesses. There is also a similar dove-tailed tab 33 near the end of the strip I2, and this is arranged to seat in a recess 34 adjacent the vertex of the recess between the lobes of the heart-shaped body, thus to securely g2g accurately maintain the heart shape of the It will here be stated that, while the present drawing shows the strips II and I2 equipped with one and two tabs, respectively, the number to be used could be increased in accordance with the size of the box or to take care of any special requirement, and that they could be -located at close intervals, and made larger or smaller as conditions of use required.
The base. or what may be termed the flange section on which the box body is finally fixed. is designated at 35 and is symmetrical in shape to the section I0, but somewhat larger, as understood by reference to Figs. 2 and 3, so that when these parts are assembled, the edges of the piece 35 will project somewhat beyond the body to form the flange 35', as will be understood best by reference to Fig. 2. The piece 35 would pref-A erably be die-cut, and made from cardboard.
Assuming that the blank for the box body is cut out in the form as shown in Fig. i, either by mechanical means or by hand, the box body II has a square cut end edge IB even with the e point of the heart shaped body, and it will further be seen by reference to Fig. 2, that the length of the strip II is such that when shaped to the corresponding edge I5 of the body I0, its free end will terminate in the vertex of the recess formed by the two lobes of the heart-shaped body at the top thereof, as it is shown in Fig. 1. Also, it will be noted by reference to Fig. 1 that the opposite side Wall forming strip I2 has an extended tab I'I at one end set of! by a line of scoring I3 perpendicular to the side edge of the strip and intersecting the point of the heart, and at the other end of this strip,'is a similarly extending tab 2D. set off by a transverse line of These two tabs. I1 and 20, are adapted, when the side wall forming strips are in upright position, to be bent laterally and brought into `close overlapping relationship with the ends of the opposite wall forming strip, as noted in Fig. 2, for securement thereto, to retain the upright position of the Walls. Also, it is shown in Fig. 1 that the top edge of the body piece I0 is recessed, as a 25, to seat the lower edge of tab therein and thus allow the close fitting of the lower edge of the strip II-with the corresponding edge of the piece I0.
In order to insure a close tting joint and a secure holding connection between the end p0rwould then be formed therefrom as follows:
First, those surfaces of the wall tabs II and 20 at the ends of strip I2, which are to be the bottom surfaces in the finished box. and likewise the bottom surfaces of the dove-tailed tabs 3l, 3|' and 33, which are integral with the strips II and I2, as well as the bottom side peripheral areas adjacent the edge of the body I0, would be stenciled with a suitable glue. Then the dove-tailed tabs of the strips II and I2 would be bent laterally at right angles to the strips, and the strips formed to the curved edges I5 and I5' of the heart-shaped bottom, and the free ends brought together in the vertex of the recess at the top of the heart-shaped section I0 with the tab 20 lapping the inner surface of the adjacent end portion of the strip II. Likewise,.the tab I1 at the point end of the body will be overlapped with the Inner face of the strip II; these parts being pressed together to cause the glue to adhere and hold the side walls of the box body in upright position. Then the dovetaiied tabs 3I-3I' and 33 of the two strips II and I2, are seated in their respective notches 30, and 34, in the section III and the ,box body as thus formed, would be placedsymmet rically upon the base section and the parts pressed together to cause the glued surfaces to secure them in the relative positions shown in Figs. 2 and 4; it being understood that the glue on the bottom edge areas of the part IIi and on thedove-tailed tabs, will effect the luniting of these parts.
With the box body thus formed, it may be decorated in various ways to suit any particular use. A cover section, likewise made, vbut of and adapted for registration and securement vin such dimensions 'as to telescope therewith, may be applied.
The present mode oi' construction has many advantages over the ordinary types. First, the entire box bodyblank, including bottom and side wall portions may be die-cut in a single operation. Second, the mode of assembly of the component side walls with the bottom eiiects a secure and substantially rigid connection that adds to the utility and life of the box. Third, the box body may be easily applied to the iiange basey and a secure connection made in a simple and economical manner.
Boxes of this kind maybe made in various sizes, and in diierent proportions from that shown without departing from the spirit of the invention, and it will beunderstood that detalls the recesses oi the bottom section.
5. A one-piece blank for a box body, Comprising a bottom section of heart-shaped contour, formed at intervals with dovetailed recesses ,opening tov the edge thereof, and opposite side wall forming strips of rectangular form, extendingin angular divergence from the point of the bottom forming section at opposite sides thereof; each strip having a length corresponding to the peripheral distance from the point to the center of the Vertex oi' the depression that is opposite the'point, and' provided at intervals along their inner edges with of construction; for example. in the shape, number and location of tabs, might likewise be varied to some extent with the size or capacity oi boxes.
Therefore, it is not intended that the claims shall be limited to details, but that they shall be given an interpretation that is commensurate with the invention disclosed.
Having thus ldescribed my invention, what I claim as new therein and desire to secure by Letters Patent ist 1. A one-piece blank for a box body, comprising a bottom forming section of heart-shaped contour and oppositeside wall forming strips of rectangular form extending in angular divergence from the point of said bottom forming section and at opposite sides thereof; said strips being integral with that portion oi the bottom section immediately adjacent the point and scored respectively along lines converging at the point of the bottom section and alined with the inner longitudinal edges of the strips for upward bendingof the strips at right angles to the plane of the bottom section and for their shaping to the contour of the bottom section.
2. A one-piece blank, as recited in claim 1, wherein one of said side wall forming strips is equipped vat its free end with an extending tab adapted to be folded and overlapped with the corresponding end of the opposite strip for `securement thereto.
3. A one-piece blank as recited in Vclaim 1,
.wherein said side wall forming strips have lengths equal respectively to the corresponding peripheral distances from the point of the heart-shaped bottom section to the point ol convergence of the said edges, and one of said strips has tabs extended beyond` its ends adapted to be folded. to overlap the end portions of the opposite strip for securement thereto.
4. A one-piece blank for a box body comprising a bottom forming section of heart-shaped contour, formed at intervals along its edges with recesses, and opposite side wail forming strips of rectangular form extending in angular divergence from the extreme point of the bottom section at extended tabs of dovetailed form; said strips being integral with the bottom section adjacent its point and scored respectively along lines convergingfat the point oi the bottom section and alined with the inner longitudinal edges of the strips for the upward bending of the strim and for their shaping into conformity with the peripheral edge of the bottom; said dovetallec'itabs being scored along lines alined with the inner edges o the strips and adapted to loe-bent at lright angle to the side walls and to be lnterlocked in the dovetailed recesses, and there being tabs at the ends' of one strip adapted to be bent into .overlapped relationship with 'the end portions of the other strip for securement thereto.
6. A box body of the character described comprising a ilat bottom section of heart-shaped contour, and opposite side wall portions extending from the point to the angle of the heart; said side wall portions being integral with the bottom section for a short distance leading from the point of the heart, and with their lower edge portions engaged flatly with the edge of thebottom about the opposite sides and to the ngle of the heart;
said "bottom section having a dove-tailed recess djacent the heart opening to the edge thereof angle and the side wall po having a bottom edge tab fitte an interlocked connection and having an extending end tab overlapped with and united with the ends of the opposite wall forming portion.
'7. A box body as recited in claim 6 wherein the bottom section is recessed at its edge adjacent'the on for that side angle of the heart to seat the lower edge portion opposite ,sides oi the bottom. and .provided vat strips and for their shaping to the peripheral dgsof'thebottom.sgtion: said tabs being scored i'or bending to right angles to the'.
of the end tab whereby the portions are united.
8. A box oi' the character'described comprising a bottom section of heart-shaped contour and opposite side wall portions extending from the .ends of the two .wall
point to the angle of the heart: said bottom section being formed at intervals along its edges with dovetailed recesses and said side wall pory tions being integral with-the bottom section for a 1 short distance from the point of the heart and shaped to the contour oi' the edges of the bottomv section, and being provided at their lower edges with integral, laterally turned tabs interlocked in the dovetailed recesses: one of said side wall portions havlng extended tabs at its ends overlapped with and adhesively secured to the ends of the opposite wall portion, and a flange base oi'- heartshaped contour of larger dimensions than the base section. applied atly to the under side of .the bottom section and adhesively secured thereto and to the 'tabs of the side wall sections to4 secure the parts functionally together: said ilange base extending symmetrically beyond the bottom section of the body. JOHN H. MCGRATH.
in said vrecess in