US2392221A - Bag - Google Patents

Description

C. V. BRADY Jan. 1, 1946.

BAG

2 Sheets-Sheet l Filed Dec. 31

FIG

Jan. 1, 1946.

C. V. BRADY BAG Filed Dec. 51, 1942 2 SheetS- Sheet 2 Patented Jan. I, 1946 UN I 2,392,221 i l c BAG Charles V. Brady, Webster Groves, assig'ir'oi' to Be'nfis Bro. BaigCompa'ny, St. Louis, Mia, a corporation of Missouri Application December 31, 1942, Serial No. 470,761

=6 elaims.

. This invention relates to bags, and with regard to certain more specific features, to bags having draw strings or cords.

he invention is an improvement upon the constructions shown in United States Reissue Patent 18,905, dated August 1, 1933, issued to H. H -Allen, for a bag; and United States Patent 2,263,346, dated November 18, 1941, issued to C. Arne, also for a bag.

Among the several objects of the invention may be noted the provision of an improved form of bag with a woven-indraw cord, and more particularly an open mesh bag which may be closed b'y-a simple pulling operation, yet which will never automatically reopen in response to pressure from the bag contents; theprovision of a draw-cord bag of the class described which, while holding shut against pressure from the contents, may be readily reopened by a lateral pulling operation at the bag mouth, without damage to the bag mouth or the draw cord; and the provision of a construction or the class described which is simple in form and operation and which may be economicall'y organized during weaving with the open-mesh fabric fromwhich bags'are gt'anerall'y formed. Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly comprises the e1emerits and combinations of elements, features of construction, "and" arrangements of parts which 9 will be exemplified in the structures hereinafter described, and the scope of the application of Whichwill-be indicated in the following claims.

"In the accompanying drawings, in' which are illustrated several of Various possible embodimerits of theinvention, i

Fig. l is a broken plan view of an area of open weave flat fabric incorporating the invention;

Fig. an a fragmentary man view or a finished bag mouth; 7

Fig. 3 is a horizontal diagrammatic section on a'n e'nlarged scale taken on line '3 3 of Fig. '2;

' Fig. 4 is a view similar to Fig. 2', but illustrating the bag filledand closed:

Fig. 5 is a view similar to Fig. 3, showing the bag mouth closed; 7 p I Fig. 6 is a view similar to Fig. 3-, showing another former the invention:

Fig. 7 is a view similar to Fig. 4, showing another manner of effectinga closure; and, 7 7 Big. a is a diagrammatic view taken on line 8-,: 0: Fig. '1.

' Similar reference characters indicate GOIIBf spending parts throughout the several views of the drawings. I

It should be noted that Figs. 2 and 4 are on approximatel the same reduced scale. Fig. 1 is on a larger scale; Fig. 7 is also on a larger scale. 3, 5, 6 a'nd8 are on a still-larger'scale, and in. these figures the drawings are dia rammatic.

and irregular launching of strands has been avoided in order to make a more orderly showing oiprinciples.

In the Allen patent is shown a simple ura-w cord woven into the loose weave fabric, i i-6m which a bag is later formed. This is done in such a. way that the draw cord becomes located "at the bag mouth. This construction is satisfactory in cases where bags are loaded, the draw cord pulled tight, and then permanentl fastened-as by knotting. The draw cord must be perma elit 1y inade fast, since there is otherwise not enough friction betweenit and the fabric weave to hold the bag shut. This means that if it is desired to open the bag, the knots must be Untied or the cord but. In many cases bags are filled, for e32 ample, with fruit, and then presented to an in specter who may want to replace a damaged piece. In such cases, it is quite desirable that the bag be readily opened manual-1y Withdlit tying knots or the like, and that subsequently closure can be readily efiected. Nevertheless the bag must not open automatically im-aer pressure from its contents.

In the Arne patent, bag closure and reopening are effected by a draw cord without requiring the tying or uhtying of any knots, but the enect bf holding shut the bag depends upon crinkling of a tubular hem which is costly and imizvracticable in the case of open mesh bags. when use 'on open mesh bags, this construction does not have enough friction enectively to maintain closure. In addition, it is difficult to helh all open fil''sli fabric. A

Referring now more particmarly to Fig. 1, there is shown at numeral I an open m sh fabric having double leno' woven. warp threads 3' and single filling threads '(in'dicated generically at'e') with 's'elvage edges I parallel to the warp threads. Duringweaving one of the double warp threads 3A is onset from what would be its normal position. thus leaving a larger distance to the next warp threads 33; Into the resulting space be'-. tween threads 3A and 33, there is woven in, during' the weaving process, a pair of helicaliy twisted draw cords 9 and II. As indicated in the drawings for purposes oi-example, but not limitation, this pair of twisted cords is woven over three filling threads 5F and under oneiilling thread 5L repeatedly throughout'the length of the fabric strip; The purpose of'f'ii'ot weaving this pair .of draw cords over and under adie cent single filling threads is to avoid too tight a weave between the draw cords and said lilli'rig threads which might later resist proper closure.

Preferably, the two draw cords-9 and II are distinguished from one another by color; thus for example draw cord 9 being gray and draw cord H beinglwhite, but this isiietabs'clhteli tion will appear. v

A lengthof the cloth thus formed is cut of! as indicated at the left and, right of Fig. 1. 'It is to be noted that Fig. 1 shows sections of cloth broken away from one another, but it is intended fabric which is long enough to extend around the bag girth, and of height enough between selvages I, to bring about the proper bag length. I

In cutting ofi a length of the fabric the wovenin draw cords 9 and H are out off along with cutting of the warp threads 3.

The cloth is folded at about its center, placing the edges E together. Before seaming these edges together asiindicatedat S in Fig. 2, they areturhediunder; the turned-under portions becoming adjacent one another, thus forming selvage for seaming, as shown.

r The bag. is also closed at the bottom by a suitside and a fold line F. on'thejother, with the" woven-intwistedpair ofidraw'cords 9 and l l ar-,

ranged peripherally of P the bag, mouth. The

' ends ofthe draw cordsat this stage extend from ae e s by reasonyot the fact that they have; been cleared by thegfolded-in portions of the edges ;E ',requir ed for selvagefjormation at. 't ese m-a II, which ,theretofore have formed individuallengths, are knotted or otherwise fastened at two a points,- I3; and I5 Each knot joins differeht colored-threads; so that, :as shown in Fig. 3, we have a double loop'of continuous draw cord around the bag mouth, including the knots 11s" and lfi. However,;the double loop,'instead of being composed-ofsimple parallel cordsv asin tying knots, or cutting ing'used, it is to be understood that tapes or the like may be substituted, in which event the adjacent tape ends may be vjoined by sewing, gluthatthe figure show a continuous rectangle of l H ing, or the like. r

In Fig. 6 is shown another form of the invention in which one is assured that any predetermined spacing of the twists between the draw f cords is positively maintained throughout the life of the bag. Like numerals designate like parts.

In this case the pair of twisted draw cords is T ing threads, as indicated in Fig. 6. That is, one

' Next, as shownin Fig. '2, the draw :cords 9, and

the prior art, is composedof twisted cords, which a'realsowoveh-into the-bag fabric. This twist-; i'nggefie ct is of some importance, as will appear, v.Ii r'rowlthe bag be'filled, and one of the knots l5 for example is pulled a indicated at the right inLEig- 5,I .while the opposite side of the bag is, held,., both loops are pulled tight and. the bag mouth is drawn shut by a pucker, shown in-Fig; 4, as it actually is, but shown schematically in Fig.5." The pulling tight of the loops involves notonlydrawing the cords frictionally through filling threads F,but also involves frictional engagement between adjacent cords in the twisted pair 9, l I. The result is that although the drawing shut of the bag mouth may be readily ac-l complished because of the very loose weavingin of the pair of twisted draw cords through filling threads (under one and'over three) neverthe-' lessa good frictional effect is obtained between the y twisted cords themselves.- This holds against any tendency-tot automatic opening of the bag in response topressure from its contents. V 1 V l; V

At'the same time, if it is desired to reopen the bag a't any time, this is readily accomplished simply, by pulling upon the knot which is close to the bag I 3 for example in the present description, Fig. 4). 'This requires only a' small-force directly along the draw cord to effect the reopening which could not be "accomplished by pressure from the bag contents below. This.

again places the bag back in the position shown inEigs. 2 and 3.. .Reclosure and reopening can be; accomplished repeatedly without tying'or un- 0f--the twisted draw cords (thewhi'te one) passes over all of the filling threads, butthe other draw cord (the gray one) passes under only certain (every fourth) filling thread. The result is the desired degree of looseness for easy ulling-shut of the bag mouth, along with the frictional look ing eiiect due to twist in the pairof draw-cords;

and in addition there is obtained the locking ef= which the single filling threads ,5'are employed with "double warp threads {twisted to surround every filling thread, thus maintaining a predetergj mined spacing of the filling threads even-with a quiteopen weavecharacteristic.

In Figs. 7 and 8 I'show a modifiedoperationgof. the invention in connection with the form of-draw cords indicated in Figs. l 5, but it should;ebe

understood that this modified use is alsqappli:

cable to theform shown in- Fjig. 6, l ikenumerals designate like parts. In this case, instead of; pullingonoknot; suclra's knot IS in ig.5; after sthe bag is filled, brie knot' (l5 or l}! ispulled along; with either opposite unknottedloopgflfi or-L8 This draws shut the ba 'las before with aidouble also be used as a bag handle, rtisunnecess ily .Arne are lQ i open to the operators grasp.

loop, ,but instead of having one long loose extension "on the side as indicated "in Fig. 4,;tliere are two shorter ones as indicated in Figi 1 7.}; These maybe brought together andused as a'bag, dle. While the single frieej extension oflEig.

long, and of course not as strongas'the two omen sions composed of fourstrands.shown'inll liggfl. I,

It will benoted in respecttothe mode or operation indicated in Figs, 7 and j8, that ,thislcannot be accomplished with the" construction shown in the Arne pap nt bec-ause thegunknottediloops'or It should be understood that'the durerent i s of the plm rd aref r the purpose'or'read-l taliri the double loop'feature. Thisfj knbttin :"is

done at the bag iactoryand not by those; the field; Q rpses oi t e inyen i nf e gf relieve persons in the field of any tying o'runtying' or the like, and without substantial damage to the construction.

,. Instead of so-called draw strings or cords be- In any event, the purpose of the connection is to bring about a continuous endless double loop around the bag mouth, the double loop being woven in place. Whether knots or splicing or the equivalent effect the continuity is unimportant, except that the knotting scheme is simplest.

Differentiating cord coloring is not necessary for the above forms of the invention if, in the bag factory, an equivalent scheme is provided for identifying the proper cords to be tied for effecting a continuous double loop.

Differentiating coloring is however also useful in case it is desired to attach both of the loops to the bag fabric at one point, as for example, by the stitching or other fastening which forms the seam S. This avoids the necessity for any knotting or the like. In such event, closing of the bag mouth is best efiected by pulling at opposite single cords on opposite sides of the bag with the stitched fastening about midway. Then the differential coloring prevents inefiectively pulling the same cord. -When this attachment and closing procedure is adopted, the operator is given suitable directions to close the bag by pulling differently identified (colored) cords. In this case the advantage of the twisted double draw cord is retained.

The weaving of several draw cords 9, ll over several filling threads at one time, as for example the several filling threads 5F in Figs. 1, 3, 5 and 6, is referred to herein as a basket weave of the draw cords. .The surrounding of a. filling thread such as 5L in Fig. 6 by members of the pair of draw cords is referred to herein as leno weave of the draw cords. Thus in Figs. 1-5, as well as 1 and 8, we have a basket weave of the twisted draw cords, and in the case of Fig. 6 we have the combination of basket and leno weaves of the draw cords and the filling threads.

As already made clear, the purpose of the hasket weave is to obtain enough looseness between the pair of draw cords and the filling threads to obtain an easy puckering action when the bag is closed; and the purpose of the leno component of the weave, as indicated in Fig. 6, is to maintain predetermined spacing of twists in the draw cord.

' Also, the purpose of the twist in any event is to obtain the final locking friction for holding the bag shut against pressure from its contents, which friction may readily be released for opening purposes by pulling the close-in knot or its equivalent while holding the opposite edge of the bag mouth.

In view of the above, it will be seen that the several objects of the invention are achieved and other advantageous results attained.

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

I claim:

1. In a bag composed of open mesh warp and filling threads and having a mouth, a draw cord woven into the open mesh adjacent said mouth, said draw cord being composed of a pair of cords one of which is helically twisted about the other, the 'ends of each of which are joined to the ends of the other to form a continuous double loop of cord around said mouth, whereby upon closing of the loaded bag by oppositely pulling diiferent members of the double loop the helical twist is tightened to effect such friction between said loop members that the bag mouth is normally held shut against any force of the load but is readily manually openable.

2. In a, bag composed of open mesh warp and filling threads and having a mouth, a draw cord woven into the open mesh adjacent said mouth, said draw cord being composed of a pair of cords one of which is helically twisted about the other, the ends of each of which are joined to the ends of the other to form a continuous double loop around said mouth, the pair of twisted draw cords having a basket type of weave with respect to at least some of the filling threads of said fabric wherein interweaving .with the pair of draw cords is effected by spaced groups of the filling threads, whereby upon closing of the loaded bag by oppositely pulling difierent members of the double loop the helical twist is tightened to efi'ect such friction between said loop members that the bag mouth is normally held shut against any force of the load but is readily manually openable.

3. In a bag composed of open mesh warp and filling threads and having a mouth, a draw cord woven into the open mesh adjacent said mouth, said draw cord being composed of a pair of twisted cords, both ends of each of which are joined to the ends of the other to form a continuous double loop around said mouth, the pair of twisted draw cords having a basket weave with respect to at least some of the filling threads of said fabric, and having a leno weave with respect to at least some of the remaining filling threads.

4. In a bag composed of open mesh warp and filling threads and having a mouth, a draw cord woven into the open mesh adjacent said mouth, said draw cord being composed of a pair of twisted cords, the ends of the cords being fastened to form two loops around said mouth, the pair of cords as twisted having a basket weave with respect to at least some of the threads of said fabric, and having a leno weave with respect to at least some of the remaining threads.

5. In a bag composed of open mesh warp and filling threads and having a mouth, a draw cord woven into the open mesh adjacent said mouth, said draw cord being composed of a pair of cords one of which is helically twisted about the other, the ends of each of which are anchored relatively to the ends of the other to form a double loop of cord around said mouth, whereby upon closing of the loaded bag by oppositely pulling different members of the double loop the helical twistis tightened to effect such friction between said loop members that the bag mouth is normally held shut against any force of the load but is readily manually openable.

6. In a bag composed of open mesh warp and filling threads and having a mouth, a draw cord woven into the open mesh adjacent said mouth, said draw cord being composed of a pair of cords one of which is helically twisted about the other, the ends of each of which are anchored relatively to the ends of the other to form a double loop of cord around said mouth, the pair of draw cords as twisted having a basket weave with respect to some of the filling threads of said fabric, whereby upon closing of the loaded bag by oppositely pulling different members of the double loop the helical twist is tightened to effect such friction between said loop members that the bag mouth is normally held shut against any force of the load but is readily manually openable.

CHARLES V. BRADY.

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