US2579760A - Folding carton - Google Patents

Description

Dec. 25, 1951 w, sAlDEL 2,579,760

' FOLDING CARTON Filed March 1 8, 1949 3 Sheets-Sheet l 31 55 if 25 2 g 39 4 5 III 39a "nl l JO II 27 I I I ",1 16 24 III I y/ I W. R. SAIDEL FOLDING CARTON Dec. 25, 1951 5 Sheets-Sheet 2 Filed March 18, 1949 if E w. R. SAIDEL FOLDING CARTON Dec. 25, 1951 Filed March 18, 1949 '3 Sheets-Sheet 5 Patented Dec. 25, 1951 UNITED STATES PATENT OFFICE Claims.

This invention relates to improvements in folding cartons and it consists of the matters hereinillustrated and described and more particularly pointed out in the appended claims.

One of the objects of the invention is to provide a cartonwhich can be produced from a one piece paper board blank, out and scored to form the bottom, the top and the two, sides of the carton and which blank may be easily manipulated from its flat folded condition to its set up condition and wherein parts of the top are turned downwardly into perpendicular positions to form the ends and transverse partitions that divide the carton into side by side commodity receiving compartments.

Another object of the invention is to. provide a carton of this kind in which there is no waste of the paper board of which it is-made and in which the commodity is advantageously displayed to view from not only the entire top of the carton but also from parts of the sides therefor.

A further object oi the invention is to provide a, carton of this kind which; when filled and stacked, the one upon the other, ably withstands the loadv pressure of the cartons above without crushing and without damage to commodities within the compartments of the cartons.

Also it is an objectof the invention to provide, in a carton of this kind, a novel arrangement of parts for the bottom and for at least the ends of the carton; and wherein the end of the cartons are held against displacement by certain of said parts of the, bottom when the carton is in its setup condition ready to receive the commodity in the compartments thereof.

Again it is an object of the invention to pro vide. a transversely partitioned carton with side by side compartments which can, be produced with a considerable saving in paper board and labor over that required for similar cartons as heretofore devised andwitha corresponding reduc n he cost of manufactur t out,

sacr fi e. i the st en th 0.1 th ca to Figs, 3 and 4 are transverse vertical sectional views through the carton as taken on the lines 3.3 and 4-4 respectively of Fig. 2 and on a scale enlarged over thatof Fig. 2.

Fig. 5 is a top plan view of the carton in its folded condition, known as a sleeve.

Fig. 6 is. an end view of the carton when m the folded sleeve condition of Fig. 5, the dot and dash lines indicating its open condition.

Fig. 7 is a bottom plan view of the carton when in its folded sleeve condition.

Fig. 8 is a plan view of a one-piece cut and scored paper board blank, from which the improved carton is made.

Fig. 9 is a fragmentary detail perspective view on an enlarged scale of parts of the carton toward oneend. thereof when in the set-up condition of Fig. 1 and which will be more fully referred to later.

Fig; 10 is a fragmentary vertical sectional view through parts of the carton appearing in Fig. 9, as taken on the line Ill-I 0 thereof.

Fig. 11 is a detail view in elevation, on an enlarged scale, of a portion of the blank of Fig. 8 within the dash and dot line rectangle I la thereon and more clearly shows certain nicks at the intersections of some of the cut lines and scored lines in the blank, and which will be mentioned in more detail later.

In generalthe improved folding carton is made from a one piece out and scored blank of paper board such as free bending chip board, bleached manila board, lined board, patent coated board, laminated board stock with grease proof sheeting or the like.

Such a blank, which is of generally rectan ular shape, includes laterally spaced parallel score lines which extend in one direction of the blank to divide the blank into panels, which form the sides, the top and the bottom of the carton when in partly set up condition. The mid panel and parts of the side panels are cut and scored into sections which when turned downwardly into a perpendicular position, form both ends for and one or more partitions in the fully set up. carton that ivide the same into side by side commodity receiving compartments.

Referring now in detail to that embodiment of the invention illustrated in the drawings, Fig. 8 shows the blank irom which a carton such as shown in Fig. 1 is made.

Said blank is substantially rectangular in shape and it is provided with a pair of cut-scored lines lgfland I l respectively and spaced equal distances inwardly from and parallel with said lines are other out through lines I2, and I3, and score lines I2a and I3a respectively. That part of the blank between the lines I2, IM and I3, I3a respectively forms a mid panel I4, which'ultimately becomes the open top of the carton, those parts of the blank between the lines I6 and I2, I2a and between the lines II and I3, I3a form the two side panels I5-I5 of the carton and those parts of the blank outwardly of the lines I and II form two end panels I6 and I1 respectively that make up the bottom of the carton.

The mid panel I4 is out transversely along lines I8, I8zc, I9, 20 and ZI respectively. The lines I8, I850, 20 and 2I terminate substantially at the cut and scored lines I2, He and l3, I3a while the line I3 extends beyond said lastmentione'd lines as appears in Fig. 8, except for a slight interruption for a purpose hereinafter mentioned. It is pointed out that the cut lines mentioned do not actually meet or cross the cut and scored lines I2, I2a and I3, I31; respectively, but stop short thereof to leave portions I21: and I3ac respectively, known as nicks and by which parts adjacent said-lines are held together against displacement while the blank is being folded by machine into sleeve form, as will be later mentioned, and at which time said nicks readily break at least partwaythrough. In Fig. 11, the nicks I30: are indicated by dotted line circles, better to illustrate their presence, but it is to be understood that such circles are not present upon the blank. While these nicks are desirable and helpful, they may be omitted, in which event the lines would actually meet. But with the fnick present, there is less danger of the parts opening up prematurely Whilst the box structure is in the process of manufacture. The mid panel I4 is provided with transverse lines 22 and 23 of longitudinally spaced perforations which facilitate bending of the parts upon opposite sides thereof into right angled relation. These lines of perforations terminate at the lines I2, I211 and I3, I3a. The cut and scored lines mentioned divide the center panel of the 7 blank into two end sections 24 and 25 and intermediate sections 26, 21, 28, 28a and 29 respectively which, in the set-up carton, form the two ends and five partitions for the carton, as best appears in Fig. 1. The end sections 24 and 25, along with the intermediate sections 26, 21 and 29, have flange- like tabs 24a, 25a, 26a, 21a and 29a respectively, joined thereto by the transverse score lines 34 and 35 respectively, joined to the said sections by the scored lines Hat and I3a. The wing extensions mentioned, which are partially cut from the panels l5, I5, are of generally triangular shape, with truncated tops, the bases being considered as formed by the score lines I2a and I3c respectively.

By this arrangement of sections 36 to 35 inclusive, there are defined between them, triangularly shaped portions 38, the apexes of which terminate substantially in the planes of the lines I2, I2a and I3, I 3a respectively. In the finished carton these portions 38 are disposed at thetop of the side walls thereof as formed by the panels I and I6 and each portion 38 has a score line 39 about midway the apex and the base thereof, the

purpose of which will appear later. It is pointed out that at each end of the panels I5 and E6 are portions 380. arranged in line with but of half the size and shape of the portions 38. Said'portions 38a are formed with score lines 3911 similar to and in line with the score lines 39 and the purpose of said score lines 33 and 36a is to afford an outward expansion of the panels I5-I 5.

In each of the wing extensions 36, 3 I, 32, 33 and 35 are short lines of longitudinally spaced perforations 22a, 22a, 22a and 23a, 23a respectively that are parallel with but offset from the associated lines of spaced perforations 22 and 23'by an amount slightly more than the thickness of the stock of the blank and thus there is defined in each of these extensions a triangular tab 46.

The panels I6 and H of the blank are each of a width greater than one-half the width of the mid panel section I4. Parts of the free margin of the panel I6 are cutaway to provide longitudinally spaced tabs 45 and parts of the free margin of the panel H are cut away to form recesses 42 which are disposed in alignment with and are the same in area as the tabs 4!. One of the lateral edges of these recesses 46 form stop shoulders for engagement by the edges of the flange 24a, 25a, 26a, 27a and 29a when the blank is set up into the carton form, as in Fig. 1. With the arrangement of the tabs 4| and recesses 42, as shown in Fig. 8 and asbefore described, the tabs on the panel I6 are formed from those parts of the paper board strip from which the blank is made, out from the panel I! to form said recesses 42. Thus, there is no waste of stock in" the production of successive blanks from a strip of paper board stock. I

On that face of the free margin of the panel I6, which is the inner face in the set-up box, is a band of adhesive outwardly of the dash and dot line 43 (see Fig. 8) and this band of adhesive also covers the corresponding side of the tabs 4 I.

In Figs. 5, 6 and 7 are shown top, end and bottom views of the blank of Fig. 8 when folded into its collapsed or knocked-down sleeve condition and in which condition they will stack flatwise for shipment and storage. To bring the blank to this condition, the panel I! is folded along the line II into overlapping relation upon the center panel and then the panel I6 is folded over upon the panel I! and united thereto by the adhesive, before mentioned. The blank is then in its flat folded or sleeve condition, as shown in Figs. 5, 6 and 7. This folding of the blank into sleeve form is performed by a blank folding machine and it is in this folding operation that the nicks I29: and I39: are broken at least partway through on the folded side after being mechanically fed from the hopper of said machine, at which time said nicks have served their purpose. Considering the blank in this flat folded condition with the panels I4 and I5 facing upwardly, as in Figs. 5 and 6, this disposes the scored lines I2 and II at opposite edges of the flat folded blank, as in Fig. 6. 7

To manually open up the flat folded blank of Figs. 5, 6 and 7, it is only necessary to grasp the side edges thereof as now defined by lines II and I2, between the fingers, and exert inward pressure on said edges as in Fig. 6, whereupon the blank opens up into the extended position shown in dot and dash lines in Fig. 6, the upward swing of the panels in this operation being indicated by the arcuate arrows of Fig. 6. It is in this part of the hand operation of setting up-the'sleeve inside surfaces of the side walls ll5.

'5 thatthe remaining parto'r the nicks:are broken through completelyi'rom "their other side.

"When the carton hasbeen thus farset up and 'it isdesiredto complete the same by hand operations, the various sections are manipulated to dispose them in the partition forming arrangement shown in Figs. 1 and 2. As the manipulation for each of said sections is generally the "same, a detailed description of the manipulation of one will sufiice for all and in this instance the section 26 is chosen as an example.

Start by placing the thumbs in the sleeve and toward the bottom thereof, bearing against the Then press the walls'slightly outward. This causes an inward bendingalong lines 39 so that the triangular'apex portions of the parts 38 point inwardlyand approach toward the horizontal. Due to this action the tabs 32, which are connected to the apex portions along the lines 31 swing upwardly and outwardly, thus exending beyond the 'bottom part of the side walls. With the parts inposition, downward finger pressure is imposed walls |5-l5 and the tabs All-40 will have'been disposed on top orthe flange 26a, as best shown in Fig. 9. The score lines 22a are oflse't from the score line 221:0 facilitate the disposition of the tabs 4|] on top of the flange 26a, as just described.

When said section 26 is in its upright position,

its flange 26a will engage flatwise upon the bottom (as formed bythe panels I6 and IT) and a part of the free edge of said flange is engaged with one of the lateral edges of an associated recess 42 in the panel 11. Thus an end portion ofthe flange 26a will engage directly upon a part of the panel I6 and the other end portion of the flange will engage directly upon a part of the panel [1. A part of this flange between said end portions in the manipulation mentioned will assume an inclined position. thus permitting the end portions to lie in diiierent levels wherein the intermediate part of the edge of said flan e will abut the lateral shoulder formed by an edge of the associated recess 42.

This arrangement or location of the parts are best shown with respect to the flange24a of the end section 24 in Fig. 9.

The sections 24, 25, '21 and 29 are manipulated in the same way as that described in connection with the section 25, the sections 24 and 25 torm ing the ends of the carton.

It will be understood that in manipulating sections 24, 26, 2'1 and one of the sections 28a,- the operator will hold the sleeve with the section 24 nearest to him. By first manipulating section 24, the other sections 26, 2'! and one of the sections 28a can be taken in order, since the thumbs of the operator can be inserted from above through open space between the first completely manipulated section and the next adjacent but so that the section 25 is closest to'the operator.

This permits manipulation in the manner before described.

As the sections 24 and 25 are swung downward- 1y along the fold lines 31, the portion 38a will bend automaticallyalong the fold orscore lines 39a. By the provision of the fold or score lines 39, 39a, it has been found that either in the setting up of the sleeve into carton form by hand or by semiautomatic machines employing jigs, said score lines are indeed practical in affording a uniform outward expanding of the sides of the set up carton.

In the manipulation of parts 28a-28a oi the section 28, they swing downwardly in opposite directions and as each part 28a is of a width less than the depth of the carton, the bottom edges of said parts will be disposed above the bottom of the carton, as appears in Figs. 1 and 2.

It is to be noted especially from Figs. 2 and 9 that the extensions 30 to 35 inclusive provide a double thickness of paper board for eachside wall and in connection with the respective sections 24 to 29 inclusively, tie said double thicknesses of paper board together, thus producing along each side, parts of angle bars cross section capable of withstanding heavy vertical compression loads without yielding or buckling.

Thus, the filled cartons when stacked, one upon the other, will amply protect the contents of the carton without damage due to the weight of the filled cartons above.

When the carton is in its completely set-up condition, as appears in Fig. 1, the spaces in the side walls left by the wing extensions 30 to 35 inclusive are symmetrically spaced apart and adjacent spaces are separated by symmetrical parts as formed by the triangular portions 38 of said side walls. 7

It is pointed out that in the completely setup cartons, parts of these portions 38 adjacent the fold lines 39 protrude or bulge slightly outwardly from the remainder of the side wall and do not lie fiat against the portions 30 to 35 inelusive. Thus said parts of said portions act as cushions to absorb lateral shock for adjacent cartons on each side thereof and this aiiords further protection for the contents of the carton, which contents are often in themselves of an easily broken or damaged character.

It will also be noted that an edge of each tab 40 engages the vertical face of the adjacent full section. This aids in strengthening the structure.

Cartons of this kind, when containing the desired commodities, are generally wrapped in a transparent film-like sheeting and when the im- A carton made in accordance with the above may be produced from a blank which does not require a waste of the stock of which the blank is formed. In its set-up conditiomas shown in Fig. 1, the partitions materially strengthen'the carton and permit a stacking of the filled cartons, one upon the other, in a manner withstanding considerable load pressure of the filled cartons above, thus permitting stacking.

The partitions mentioned also serve the purpose of holding the two sides of the completed carton perpendicularly to the bottom and against bellying or bowing outwardly before wrapping the filled carton. in a paper sheet or the like. Thus the necessity of tying a string or cord auvaveo around the filled'carton beiore wrapping the same is eliminated. Assaid partitions are integral parts of the carton itself and are joined or connected to the sides of the carton in the manner described, they afiord a full visibility to each compartment between said partitions. V V Portions of the cut lines 36 are disposed at an angle of forty-five degrees to parts forming the top edges of the-sides of the carton. This permits and facilitates folding of the end and partition members or sections from the horizontal position which they occupy when the carton is in the partly assembled form shown by dot and dash lines in Fig. 6 to the completed form in which the end and partition members or sections are vertically disposed.

While in describing the invention, I have referred in detail to form, construction and arrangement of the various parts of the carton, the

same is to be considered only in its illustrative sense and therefore I do not wish to be limited thereto except as may be specifically set forth in the appended claims.

I claim as my invention:

l. A blank for a carton of the kind described embodying therein a rectangular piece of paper board material including a central panel, a panel at each side of and joined to the central panel by a cut and scored line and at least a fourth panel joined to one of the side panels by a scored line, said central panel having transverse cut and scored lines terminating at said first mentioned cut and scored lines and dividing the same into sections, each having truncated triangular full width wings at their ends cut from each side panel and foldably joined thereto by parts of said out and scored lines between said central and said side panels, each wing havingconverging side edges, parts of each of said wings being joined to parts of each side panel by scored lines included in one side edge of each wing.

2. A blank for a carton of the kind described embodying therein a rectangular piece of paper board material formed to provide a central panel, a panel at each side of and joined to said central panel by fold lines and a fourth panel joined to at least one of said side panels, the opposite ends of all of said panels providing continuous straight line edges for opposite ends of the blank, said central panel being divided transversely into end and intermediate sections, the opposite end edges of said end sections being coincident with and forming parts of the end edges of the blank, each end and intermediate sections having truncated triangular wings at their opposite sides, each cut from an associated side panel and each joined at its base thereto along said first mentioned fold lines and having oppositely inwardly angled side edges and a free end edge parallel with the base thereof, a part of at least one angled edge of each wing being joined to the associated side panel by a fold line beginning at thefirst mentioned line and terminating short of the free edge of said wing.

I 3. A blank for a carton of the kind described embodying therein a rectangular piece of paperof said end sections being coincident with and forming parts of the end edges of the blank, each end and intermediate sections having truncated triangular wings at their opposite sides, each cut from an associated side panel and each joined at its base thereto along said first mentioned fold lines and having oppositely inwardly angled side edges and a free end edge parallel with the base thereof,ja part of at least one angled edge of each wing beingjoined to the associated side panel by a fold line beginning at the first mentioned line and terminating short of the free edge of said wing, and a score line in each part of each side panel and arranged parallel with the first mentioned fold line and extending between the oppositely angled edges of adjacent wings.

4. A blank for a carton of the kind described embodying therein a rectangular piece of paperboard material formed to provide a central panel, a panel at each side of and joined to said central panel by fold lines and a fourth panel joined to at least one of said side panels, the opposite ends of all of said panels providing continuous straight line edges for opposite ends of the blank, said central panel being divided transversely into end and intermediate sections, the opposite end edges of said end sections being coincident with and forming parts of the end edges of the blank, each end and intermediate sections having truncated triangular wings at their opposite sides, each cut from an associated side panel and each joined at its base thereto alongsaid first mentioned fold lines and having oppositely inwardly angled side edges and a free end edge parallel with the. base thereof, a part of at least one angled edge of each wing being joined to the associated side panel by a fold line beginning at the first mentioned line and terminating short of the free edge of said wing, and a score line in each part of each side panel and arranged parallel with the first mentioned fold line and extending between the oppositely angled edges of adjacent Wingsin the plane of the outer end of that part of said fold line in said side panel that joins the wing to said side panel.

5. A blank for a carton of the kind described embodying therein a rectangular piece of paper board material formed to provide a central panel, a panel at each side of and joined to said central panel by fold lines and a fourth panel joined to at least one of said side panels, the opposite ends of all of said panels providing continuous straight line edges for opposite ends of the blank, said cen tral panel being divided transversely into end and intermediate sections, the opposite end edges of said end sections being coincident with and forming parts of the end edges of the blank, each end and intermediate sections having truncated triangular Wings at their opposite sides, each cut from an associated end panel and each joined at its base thereto along said first mentioned fold lines andhaving oppositely inwardly angled side edges and a free end edge parallel with the base thereof, a part of at least one angled edge of each wing beingv joined to the associated side panel by a fold line beginning at the first mentioned line and terminating short of the free edge of said wing, at least certain of saidsections includinga fold line, the ends of which terminate at said first mentioned fold lines and provide bendable i flanges for the associated section, each wing of of the first mentioned fold ends in line with and of a length approximating the width of said bend- Number able flange. 1,794,125 WILLIAM R. SAIDEL. 1,836,100 2,076,844 REFERENCES CITED 5 2,321,209 The following references are of record in the 2,389,222 file of this patent: 2,527,702

UNITED STATES PATENTS Number Name Date Number 1,686,521 Harrison Oct. 9, 1928 323,350 1,733,663 Hale Oct. 29, 1929 Name Date Sugerman Feb. 24, 1931 McWilliams Dec. 15, 1931 Holmes Apr. 13, 1937 Holwick June 8, 1943 Walsh Nov. 20, 1945 Buttery Oct. 31, 1950 FOREIGN PATENTS Country Date Great Britain Jan. 2, 1930

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