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Publication numberUS1885906 A
Publication typeGrant
Publication dateNov 1, 1932
Filing dateMay 2, 1930
Priority dateMay 2, 1930
Publication numberUS 1885906 A, US 1885906A, US-A-1885906, US1885906 A, US1885906A
InventorsGallistel Clarence P
Original AssigneeContainer Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1885906 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


This invention relates to cartons or boxes, and more particularly to that 'type of carton or box which is formed from a single blank of sheet material, having the ends thereof brought together and secured by a strip of sheet material glued thereto so as to form a tube. V 1 i It has heretofore been the 'practice to place reinforcing strips of material alongthe cor- 10 ners of the box, particularly along the meeting edges of the carton, to hold such edges together. It has been found that a single thickness of such reinforcing material frequentlybecomes loosened or splits after the box has been subjected to rough handling, as is often the case where boxes are shipped by freight. V i

Other. styles of corner tapes have been designed which furnish the plurality of thick nesses of material adjacent to the upper and lower corner of the box so as to reduce the lia-v bility of tearing to a minimum. These various types have proved more or less unsatisfactory for the reason that they were diflicult to assemble in the box in the case of an independent reinforcing piece, and where the reinforcing piece was formed integrally with the main'securing strip, there was not sufficient amountof material and reinforcing section to hold'sueh section securely in place on the box, and therefore it frequently became loosened or detached at this point.

The present invention; has for an object to provide a securing strip combined with a reinforcing portion thereon in which the material thereof is so distributed that, while avoiding undue waste,a maximum of holding strength is afforded, and is designed par- '40 ticularly as an improvement over Leitch Patent No. 1,121,737, granted December 22, 191 1.

To these and other ends the invention re sides in certain improvements and combinations of parts, all as will be hereinafter more 1 *5 fully described, the novel features being 1930.- Serial No. 449,135.

pointedout in the claims at the endof the specification.

In the drawing, 7 v Fig. 1 's a. perspective view of a box having a securing strip applied thereto, and which is constructed in accordance with the present invention; 3 r i 'Fig. 2 is a fragmentaryperspective view similarto' Fig. 1, but on a largerscale, illustrating in detail the preferred manner of applying a securing strip to the carton;

Fig.8 is a perspective detailed view of a securing strip as it appears before attach ment thereof to a carton; and

Fig. 4 is a view showing a preferred manner of cutting the'blank securing strip of the present invention.

The present embodiment of the invention provides a securing strip having sl-itsor cuts at the-ends thereof adapted to facilitate the formation of a reinforcing portion, having the material thereof distributed so as to provide substantial areas adjacent the outer edges of the securing stripproper.

Referring more particularly to the drawing,there is shown at 10 a carton of usual form which may be of any construction but is herein illustrated as of the so-called slotted cartontype. At the corner of the carton where the free edges of the sides 11 and 12 .meet, there is shown a reinforcingstrip' denoted generally by the reference numeral 13 which is designed to securely hold together such meeting edges, and to withstand the wear and tear incident to the rough handling to Which such cartons are subjected. While the reinforcing strip 13 is shown as applied to only one corner of the box, namely at the juncture of the sides 11 and 12 where reinforcement is most needed, it is obvious that such reinforcing strips maybe applied at each of the four corners of the box, particularly in cases where the box isto be subjected to unusually rough treatment. g

The manner of applying the reinforcing strip 13 to the box is similar to that described in the patent to Samuel G. Leitch, No. 1,121,737, granted December 22, 1914, but the invention resides in the improved construction of the strip or tape, by reason of which construction a maximum of holding strength is afforded, while avoiding waste of material.

As shown clearly in Fig. 4, the reinforcing strip is cut from a rectangular blank A of any suitable material such as cloth, fabric, or other strong, flexible tape, which on one side is coated with a suitable adhesive. The cut extends along lines 14, 15, which diverge upwardly, as in the case of the blank shown in the Leitch Patent No. 1,121,737, but instead of extending to the top of the blank, the

diverging lines terminate at points 16, '17,.

which points in the size strips most commonly used, are about one-half inch from the top of the blank, although of course the invention is not to be limited to these particular dimensions. I

From the points 16, 17, lateral cuts 18, 19 are made which extend to the side margins of the blank. The cuts 14, 15 and 18, 19 form a tongue which is designed to be so folded and bent upon itself as to provide additional thicknesseswhich cooperatewith the body of the blank or strip 13 to suitably reinforce the corners of the box to which the strip is applied. As shown, the tongue consists of a central upwardly diverging portion 20, 20', bounded by the cuts 14, 15' and two outwardly flaring wing portions 21, 22 formed by the cuts 18,19, which cuts as shown are parallel with the upper edge 23 of the tongue. These wing portions extend clear tovthe side margins 24, 25 of the blank, and constitute one of the principal improvements of the present form of reinforcing strip over that employed in the Leitch Patent No. 1,121,737. It will be noted that thecuts 14, 15 and 18, 19 leave tabs 26, 27 extending upwardly from the body of the blank, which tabs terminate short of the upper end of the blank, due to the presence of the wings 21, 22. These tabs are intended to reinforce the end flaps of the box to which the tapes are applied in the same manner as described in the Leitch patent.

After the blank A has been cut, which'may be done by a single stamping operation, the

central tongue 20 is first bent downwardly along line 28, and then is bent upwardly intermediate its ends along line 29 as clearly illustrated in Figs. 3 and 1.

Assuming that the adhesive is on'the face of the strip toward the observer as viewed in connection with Fig. 3, and that the adhesive has been suitably moistened, it' will be obvi- I ous that the portion 20 of the tongue between the lines 28, 29 will adhere firmly to the bodyof the tape or strip, both adjacent faces being coated with adhesive, and the wings 21, 22.wi1l also adhere to the body of the tape by reason of the adhesive on the face of the tape a line parallel to the first bend.

body. Moreover, all the faces toward the observer, as shown in Fig. 3, will be adhesive covered by reason of the manner of folding the tongue.

t will be further noted that at the central portion of the strip, just below the V-shaped cut-away portion 30 (Fig. 3), there is a triple thickness of material, consisting of the uncut body of the strip, and the two portions 20, 20 of the tongue, which double upon each other. In this respect the device is similar to the construction of the Leitch patent. In the present construction, however, the wings 21, 22 extend laterally clear to the edges of the strip and thus afio'rd additional holding strength not obtainable in any device known tothe prior art, so far as I am aware.

The strip 13, having been folded as shown in Fig. 3,-is now ready to be applied to one of the corners of the box, in the manner illustrated in Figs. 1 and 2. When so applied the body of the reinforcing strip extends vertically along the meeting edges of sides 11, 12 of the box, one longitudinal half of the strip adhering to one side of thelbox and theother half adhering totheother side, and the tabs 26, 27 beingsuitably secured to the end flaps of the box. At that portion of thebox just below the point at which the end flaps turn in, a triple reinforcement is provided and extending laterally are the tabs 21, 22 by means of which a maximum of holding strength is afforded. 7

\Vhile not shown in detail in the drawing, it is obvious that both ends of the reinforcing strip 13 may be provided with the extension tabs, tongues and lateral wings, the two ends ofthe strip being preferably identical.

What I claim is: 2' v 1. A flexible strip for reinforcing joints of boxes, cartons and'the like, said strip comprising a body portion, a tongue connected to the body portion and formed by cutting slits lengthwise of the body portion, wings extending laterally from the tongue to-the side margins of the strip, and formed by cuts extending laterally from the lengthwise cuts forming said tongue, and side tabs formed from said strip by the said lengthwise and lateral cuts, the said tongue being bent along a line extending laterally .of'the strip at the juncture of said tabs with the body portion of the strip, and rebent along 3. A flexible strip for reinforcing joints of boxes, cartons and the like, said strip comprising a body portion, a tongue connected to the body portion, Wings on said tongue extending to theside margins of the strip, said tongue being formed by cuts extending lengthwise of the strip, said cuts diverging outward and terminating at two opposite side edges of the strip short of the end thereof, and side tabs adjacent the tongue portion formed from the strip by the cuts.

Signed at Chicago, Illinois this 28th day of April, 1930. i


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5366144 *Feb 23, 1994Nov 22, 1994Dopaco, Inc.Internal support for cartons
U.S. Classification428/343, 229/199
International ClassificationB65D5/44
Cooperative ClassificationB65D5/445
European ClassificationB65D5/44B2