US2376790A - Closure - Google Patents

Description

May22 1945. I R. B. L'E'ROY 2,376,790

CLOSURE Filed Feb. v26, 1944 \i V 4 I rsaaaam yzz. was,

amen BemisBro CLOSURE I Roy, mum-ms, N. J.,assignor to .-Bag.Company, St. Louis, Mo., a

; mention of Missouri soousauo February as, rm, Serial No. 524,01;

-This invention relates to closures, and with regard to certain more specific features. toclosures for bag ends and the like.

Among the several objects oif the invention may be noted the provision of a bag closure which incorporates "an auxiliary trap or guard against movement into the bag of moisture and th like which may have penetrated beyond a cover tape such as in common use; the provision of a closure of the class described which protectsthe threads of the sewn seam often used for attaching the cover tape, or even when the cover tape is not used: the provision of a seam of the class described which is at tight at its endsas at its mid portions; and the provision of a closure of the class described which may be partially located and attached to a bag at the bag factory and which may finally be conveniently closed by a bag packer after a bag has been filled. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the elements and combinations of elements, features of construction, and arrangements of parts which will be exemplified in the structures hereinafter described, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawing, in which is illustrated one of various possible embodiments of the invention,

Fig. 1 is a plan view of a paper blank from which the invention is developed;

Fig. 2 is a perspective view showing an end of ted lines the relative position of the bag to which" the cuff is applied;

Fig. 7 is a side elevation of a bag showing at the right, by broken away lines, a partial attachment of the closure, and at the left showing I the closur drawn partially open for loading of the bag by the packer; and,

Fig. a i's a side elevation offs, bag showing completion of the closure embodying the invention, including a cover strip as finally sewn in position.

' Similar reference characters indicate corre- 0 claim. (or. 229-62) f sponding parts throughout the several views of the drawing.

Referring now more particularly ,to Fig. 1, there is shown at numeral I an elongate blank having diagonally opposite ends tabs 1 and i.

This blankis preferably composed of craft paperv or similar sheet material. It is folded along the parallel lines I, 8, II, I! and I! to produce, as indicated in Fig. 2, downwardly turned edges or skirts I1 and it from theupper edges of lateral panels 2| and II. Panels II and "are joined by intermediate panels 25' and 21 The short legs of the sectional W shape are intermediate its lateralf'longer legs, and the edges i1 and is are turned down with respect to the latter. 9 and ii are coaxial respectively with the inner edges'of the tabs 3 and 6. Thus is formed a wshaped gusset having upper hooking edges.

Each tab 3 and I forms an extension after folding as indicated atone end by E in Fig. 2. This is folded on a fold line II to enclose the openend of the w-shaped gusset. The extension E is manipulated during folding so as to bring its portion of the depending edge i"l under the depending edge is associated with the panel 23. This produces the cuff shown in Figs. sand 5, which is in effect a'gusset closed in at its ends and provided" with an'upper marginal skirt.

'The'cufl is then ready for insertion into'abag end with the marginal portions l1, l9 telescoping outside entirely around the bag. In Fig. 6

the solid lines show'the' cuff of Figs. 4' and 5. The dash lines 29 indicate the locations of bag edges between the continuous skirt I1, I land the gusset parts of the cuff whicharewithin the bag mouth.

In Fig. 'l the mills shown in final position on the right-hand sideof the bag. The bag manufa'cturer makes a permanent fastening. on this side of the bag 'by applying anadhesive or the like 30 under one or both sides of the skirt i1 "sides which reach down preferably about flush with the lower edges of the turned-down skirt l1, Hi. It is finally sewn into position by means of the stitching passing mu flid opposite sides of the cover strip, the'skirt I1, is and-the upper portions of the panels II and a, This sewing does not intersect the shorter intermediate or cenn-al panels 25" and 21. These along with the lower portions of the panels 2| and as extend down into the bag, thus forming of the gusset an accordion-shaped trap reaching from corner to corner of the bag to prevent any mol s-, ture which might the seamformed' ingconnection with the cover strip fromproceeding'nirther into the ba It is to be understood that the my be owned without the cover asravoo the bag, and stitching'pas'sing through said skirt sh'ipor adhesive maybeusedasaclosure with-,

out the cover strip. It would be, applied be-;

tween the upper marginalportionsot'panels N and 28. Or, if desired, the cover strip may be attached by adhesive instead of by stitching. In

any event it may be desirable to dipthegentire seam into wax or other waterproofing compound after the bag has been filled and closed. This provides exteriorprotectiom- Since the W-shape of the gusset 2|, 25,1; and" 21 is quite expansive, like. a bellows, the trap is effective in any such expanded condition of the sides of the bag as may-be caused by its filling,

Furthermore, the sealing eflect of thebellows extends'clear to the end of the bag at its corner where the turned-over extensions} 'provide a A complete internal guard] throughout the entire periphery of'the bag including points adjacent to its comers.

Another advantage of the invention isthe .w-shaped gusset acts as a thread protector for the seam when chemicals are packed which are unfriendly to threads. The gusset holds the con-v tents of the bag away from the. threads, particularly if turned over to-apply the weightof the contentstothegusset It is to be understood that the invention is applicable to thebottom of a bagas well-as top, in which case the bag manufacturer completes all 1 operations thereon, since this end of a'bag does not require to be left partially openfor filling.

It will also be understood that the gusset,-

forming panels 2|, 2!, 25 and ll may have subif stituted therefor other gussetforming shapes, the primary requisite beingv that there shall be enough loose accordion-like material between the skirts n and Is to provideforstretching or the closure when the contents ofthe has separate its opposite sides,

Inv view of the above, it be seen that the several objects of the invention are achieved and other advantageousresults attained.

As many changes could be made in the above constructions without departing from the scope of the invention, it is intendedthat all matter contained in the above description or shown in the accompanying drawing shall be interpreted v as illustrative and not in a limiting sense. x

1. A closure for a bag end orthe like comprisiing an expansible gusset strip portion having an expansible portionand marginal portions, said expansible portion being inserted into the bag end to place the marginal portions of the gusset strip inside and adjacent to the marginal portions of the bag, outside skirt portions extending from the marginal portions of the strip and folded to engage the outside marginal portions 0! the bag, means for fastening the skirts to said marginal portions of the bag. an inverted V: shaped cover strip enclosing said skirts, and

. ti ns P in only through said cover strip.

portions, the'upper portions of said relatively wide panels and through the marginal portions of the bag but not through said relatively narrow l5 panels.

3. A-closure' for bags and the like comprising 'an expansible gusset strip inserted into the end of mo bag, "said'gu'sset strip comprisimg relatively wideside panels and relatively narrow connectin panels therebetween, skirt portions extending from the outer edges of said wide panels and engaging the outside marginal portions or the has. an inverted v-shaped coverstrip covering said skirt portions and-e em the mouth ofthe bag and .the gusset strip, and stitching passing through the opposite sides of-the'cover strip, the

skirt portions "and only the upper portions of the wide panels.

. 4. A closure for a bag or-likei'tubuiar'article comprisinga cufl havinga cross section including a gusset-formin part insertable into the mouth of the bag andan outer, folded portion located near the edge of-said mouth, means extending from said folded edge providing a depending skirt engageable with the outside marginal portions "of said bag, and folded ends forming and portions of the cuff to enclose the ends of the gusset, said folded over portionscarrying the skirt portions around the corners of the bag mouth, an inverted V-shaped cover strip overlying said skirt portions and stitching passing through said cover strip and underlying parts. I 4

5. A one-piece member for forming a bag closure, comprising a strip, tabsat ends of said strip which tabs areoppositely directedlongitudinaliy of the strip, each tab being narrower than the width of the strip, i'old lines including parts traversing said tabs for determining folded skirt portions for outside engagement with the margins of the bag, fold lines in the strip for forming a gusset, each of which lines is coaxial with an edge of a tab whereby adjacently located panels may be folded to form gusset portions and whereby,

said tabs may be folded around the ends of said gusset portions and against'opposite ones of said panels to form a cuff of equal width throughout.

6. A one-piece member for forming a bag closure, comprising a strip, tabs at oppositediagonal corners of said strip which tabs are oppositely v tion and against opposite ones of said panels to a directed longitudinally of the strip, each tab being.

narrower than the width of the strip, fold lines near opposite edgesof said strip and respectively traversing said tabsfor-deterniiningskirt portionsto engage the margins of a bag, a fold line I along the centerof the strip located centralhr between said tabs, and told lines parallel to said central fold line each of which is coaxial with an edge of a tab whereby adjacentiy located panels may be folded to forms. vgusset portion, and

whereby said tabs after folding down of said skirts may be folded around the ends of said gusset porform a can of equal width'throughout.

' Y RdBERTELEROY.

Images