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Publication numberUS392964 A
Publication typeGrant
Publication dateNov 13, 1888
Filing dateOct 1, 1888
Publication numberUS 392964 A, US 392964A, US-A-392964, US392964 A, US392964A
InventorsM. Mcculla
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Frank m
US 392964 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)



No. 392,964. Patented Nov. 13, 1888.


Wiinesses: invader.

Frank M.M- -Gu|la. v b H's/Hi d M .95 y 3 N. PETERS. Fholo-Eillwgmpher, Washinginn. D. c.



$PECIPICA'IION forming part of Letters Patent No. 392,964, dated November 13, 1888.

Application tiled October I 1888. Serial No. 286,956.

To aZZ whom, it may concern:

Be it known that l, FRANK M. MeCULLA, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Paper Bags, of which the following is a specification.

Myinvent-ion has reference to paper bags; and it consists in certain improvements, all of which are fully set forth in the following specifieation, and shown in the accompanying drawings, which form part thereof.

My invention has particular reference to that class of bags in which the tube or body part is formed with bellows side folds and with what is known as a square bottom, and which bags are placed on the market and technically known as the Union Square Bag. The said bag, so widely known and generally used, has a very vital fault, in that when the bottom seam was pasted it was impossible, owing to the construction, to secure the bellows folds at the bottom portion with a pasted seam, their edges being under one of the faces of the tube. YVhen the bag was opened, the necessary folds resulting in the bottom covered the edges of said bellows-fold portions, forming a fairly tight bottom. If, however, the hand was thrust into the bag, the finger could be readily pushed through theunpasted lower edges of the bellows fold and, in fact, the entire bellows fold .could be pulled out laterally, destroying the utility of the bag. \Nhile it must be remembered that these defects would not show themselves in the majority of cases, yet they exist and are dccidedly objectionable.

The object of my invention is to produce a bag in all material respects and characteristics the same as the above-referred-to bag, but without the obj ectionable features above pointed out.

In carrying out my invention I form my tube in precisely the same manner as is done with the old form of square bag,with the single exception that the edge of the bellows fold is made to project, so as to be exposed between the two edges ofthe faces or top and bottom layers of the tube and thus be adapted to receive paste. It will then be seen that if the bottom of the tube is bent over on a transverse axis, and so as to be pasted on one of the (No model.)

faces of the tube, not only will the two edges of the faces be pasted down securely, as in the old form of bag, but the bellows fold itself will be pasted securely to one of the faces of the tube. The result of this is that when the bag is opened every portion of the bottom is sealed tight and there is no possibility of material forcing its way through the scams or folds.

In the drawings, Figure 1 is a perspective view of the old form of bag-tube. Fig. 2 is a similar view of my improved tube. Fig. 3 is a plan view of the tube, showing the paste ap plied. Fig. 4 is a plan view showing the bottom folded over and pasted, and Fig. 5 is a perspective view of the bag opened.

A is the body of the tube, and is formed with the bellows side folds, E, and with the usual longitudinal seam, F, in one of the faces. In making the tubes for the bags it was formerly customary to cut the bottom edges, 13 and C, so that one projected beyond the other, and also to cut the bellows-fold edges (1 on the same line with the edge B, so that the edge 0 proj eeted entirely beyond them. This is shown in Fig. 1. It is now evident that when the paste is applied to the edges B and Gno paste was applied to the edges of the bellows fold, and consequently the bottom edge of the bag was turned over and secured to one of the faces without positively securing the bellows folds. \Vith this construction the edges of the bellows folds could be thrust out, forming apertures from the interior to the outside of the bag at the bottom.

Referring now to the other figures which illustrate my invention, it will be seen that the bottom edge, (1, of the bellows fold is extended beyond the edge B of the top face of the tube and to a point between the edges B and G, as shown in Figs. 2 and 3. The paste is then applied not only to the face-edges B and O, as heretofore, but to the bellows-fold edge (I also, as shown in Fig. 3; and when these edges are bent over on asingle transverse axis on the line it as and pasted to the face of the tube the bellows folds will be so securely attached that it will no longer be possible to thrust them open or pull them out. So far as the appearance of the bag is concerned, it is precisely the same as the old form of bag, as will be seen by an examination of Fig. 5.

In this application I make no reference whatever to the machine employed for cutting the tubes in the manner shown, as that will form subject -matter of another application, and, so far as my invention is concerned, the tube may be formed entirely by hand or otherwise.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. Apaper bag consisting of a tube having a single bellows side fold at each lateral edge, and in which the bottom consists of the two faces of the tube and bellows side folds, each folded over a single transverse axis across the tube at a distance from the lower edge of the shorter face thereof and each securely pasted to one face of the tube,and in which the pasted portions of the bellows side folds are covered by the folded portion of one of the faces of the tube, forming when opened a square or rectangular bottom bag.

2. A paper bag consisting of a tube having a single bellows side fold at each lateral edge, and in which the bottom edges of the tubefaces and bellows side folds project one beyond the other like steps and are folded over a single transverse axis across the tube at a distance from the lower edge of the shorter face thereof, and in which each and all of said projecting faces and bellows side folds are fully pasted down, one of the faces of the tube forming a square or rectangular bottom when the bag is opened.

In testimony of which invention I hereunto set my hand.

FRANK M. MoOULLA. Witnesses:


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2701878 *Dec 24, 1952Feb 15, 1955Davis William MSanitary finger cover
US2704183 *Dec 9, 1949Mar 15, 1955Cromwell Paper CoFlexible container
US2730295 *Oct 2, 1952Jan 10, 1956Union Bag & Paper CorpHeat sealed bag
US2837267 *Dec 7, 1955Jun 3, 1958Potdevin Machine CoBags
US2871771 *Jun 12, 1952Feb 3, 1959Milprint IncArt of producing side-gusseted bags
US3197118 *May 17, 1963Jul 27, 1965Carl E MeyerhoeferEnd construction for multi-gusset bag
US3217970 *May 11, 1964Nov 16, 1965West Virginia Pulp & Paper CoMulti-wall bag
US3281061 *May 28, 1964Oct 25, 1966Rochester Envelope Company IncEnvelope
US3650460 *Aug 13, 1962Mar 21, 1972Westvaco CorpPaper bag
US5163756 *Jan 21, 1992Nov 17, 1992Bagcraft Corporation Of AmericaBag construction with auxiliary flap
US6206570Mar 18, 1999Mar 27, 2001Packaging Dynamics, L.L.C.Flexible container with improved printable and removable section
US20060269173 *May 25, 2005Nov 30, 2006Uwe KoehnSide fold sack with roll bottom
Cooperative ClassificationB65D31/00