US2152745A - Bag construction - Google Patents

Description

April 4, 1939. A. KLAss BAG CONSTRUCTION Filed Dec. l0, 1957 Patented Apr. 4, 1939 UNITED STATES PATENT OFFICE Manufacturing Corp.,

poration a domestic New York cor- Application December 10, 1937, Serial No. 179,210

1 Claim.

This invention relates to bag constructions. One of the features of the present invention is to provide a construction particularly adapted to flexible bags which provides relatively rigid edges on the opposite sides of the bag at the open mouth to facilitate the folding of the end Walls, and at the same time providing for sustaining the open mouth of the bag in closed position by clamping the reinforced edges together to form a closure.

Another feature of the invention is to provide a closure fastener which is particularly adapted for clamping the reinforced side margins together in closed position, and which fastener is particularly devised for a one-piece construction.

Further objects of the invention are to provide a bag construction of the character referred to that promotes economy in construction and forms a bag that is strong, compact and durable and comparatively inexpensive to manufacture.

With the foregoing and other objects in view, the invention consists of a novel construction, combination, and arrangement of parts as will be hereinafter more particularly described in the specification and illustrated in the drawing, wherein is disclosed the preferred embodiment of the invention, but it is to be understood that changes, Variations, and modifications may be resorted to without departing from the spirit of the claim hereunto appended.

In the drawing wherein like reference characters indicate corresponding parts throughout the several views:-

Figure 1 is a perspective view of a bag embodying the features of the present invention and showing the bag in the open position.

Figure 2 is a View similar to Fig. 1 showing the bag in the closed position.

Figure 3 is a fragmentary vertical section through the bottom portion of one form of the bag wherein the front and rear side walls are made in separate pieces.

Figure 4 is a view similar to Fig. 3 showing the front and rear side walls made of a single piece.

Figure 5 is a detailed sectional view taken substantially on the plane of line 5-5 of Fig. 2.

Figure 6 is a fragmentary detailed sectional view taken substantially on the plane of line 6--6 of Fig. 2.

Figure '7 is .a perspective view of the closure fastener removed from the bag.

Figure 8 is a fragmentary perspective view of the upper portion of a bag of elongated nature particularly adapted for carrying pencils and showing the bag in the open position.

(Cl. 15G-1) It is pointed out in the beginning that the construction of the bag shown in Figures 1 and 2 is the same as shown in Figure 8, except for a difference in shape. In Figures 1 and 2, it will be v bag in Figures 1 and 2 is particularly adapted for carrying cosmetics, although it may be used for other purposes, and serves to be carried in a purse or pocketbook. The form of the invention shown in Figure 8 of the drawing is elongated in nature suitable for bag constructions adapted for carrying pencils by school children.

It is pointed out that the body of the bag is designed to accommodate the use of a exible material such as cloth, leather, and imitation leathers. necessity of using a closure flap to form a cover over the open end of the bag as is customary in many bag constructions in common use, all of which promotes economy in constructing a bag in Vaccordance with the present invention.

The construction of the bag of the present invention provides an open mouth at the top and a closed bottom. The construction also provides for the edges of the side and end walls to terminate in the same plane about the open mouth, and operates very well with bags wherein the opposed walls of one dimension are substantially greater than the opposed walls of the other dimension.

The bag is made with a front side wall I0 and a rear side wall Il which are of the same shape. As shown in Figure 4 of the drawing, the front and rear side walls may be made from a single length of fabric which folds .at the bottom I2. If desired, the front and rear side walls may be y made in separate pieces as shown in Figure 3 of the drawing, in which event, the bottom edges i3 of the side walls are turned inwardly along the margins and stitched by a row of stitching I3. The end walls of the bag conform in shape to an inverted isosceles triangle and are indicated at A an-d B. It is believed that a description of one end wall of the bag will serve to familiarize the art with the construction of the other. In making the end walls, there is a triangular extension i4 preferably made integral with the front side wall Ill and an opposed right triangular extension I5 preferably formed integral with the rear side wall H. The hypotenuse sides of the triangular extensions I4, I5 are a permanent crease and this crease forms the juncture of the The design of the bag obviates the d extensions with the corresponding side walls. The margins of the right triangular extensionsy I4, I5 along the altitudes thereof, are turned inwardly as at I 6 and stitched together at I'I to hold the margins in secured abutting relation. By having the triangular end walls in the inverted position, it will be seen that the pocket of the bag lnarrows progressively from the open upper end to the bottom of the bag and at the same time, the triangular end walls facilitate in the folding of the end walls into a compact fold that is illustrated particularly in Figure 2 of the drawing. If desired, a lining I8 may be used in the construction of the bag, which lining is cut to conform with the exact shape of the side and end walls.

The upper edges of the side and end walls are folded inwardly continuously abouty the mouth of the bag and stitched at I9 bya single row of stitching to make a hem that forms an anchor- Aage channel 20 at the upper edge of the front and rear side walls. Y

Inthe channel 20 made by the hem on the front side wall I Il and the rear side wall II are secured the reinforcing bars 2 I, one for the front Y'side `wall and another for the rear side wall. The

reinforcing bars are relatively stiff as compared with the material from which the side and end -walls are made, and these bars may be constructed from spring steel, hard rubber, stiff Y leather, wood, or pyroxlin. The bars 2| are coextensive with the width of the side Walls and extend from one crease to the other on the end walls. It will be seen that the bars, one at theV upper edge of the front and rear side walls provide a stifling at the mouth of the bag that permits the front and rear side walls to move in a unit from open to closed position, thereby facilitating the folding and the unfolding of the'end walls during the same operation. Moreover, the reinforcing bars provide relatively rigid abutting surfaces at the mouth of the bag in the closed position, which abutting surfaces when clamped by the closure fastener of the present invention, form a relatively tight seal for the bag,

The closure fastener of the present invention is indicated at C and is constructed of relatively stiff material such as steel or brass metals. The body portion of the closure fastener is of substantially U-shaped configuration having a relatively at crown 22 and depending legs 23 preferably formed integral with the crown. The forward edge of the crown 22 is made with an integral upstanding bill 24 which serves to aid in the lifting of the closure fastener when it is attached to the bag. On the lower edge of each leg 23 is an outset lip 25 which also maybe used to facilitate the opening and closing of the fastener. Onone of the legs 23 on which theslip 25 is formed, there is an elongated extension 26, which projects in a direction away from the bill 24.

Adjacent the free end of the extension 26 is an opening 2l through which the rivet 28 extends when the closure fastener is attached to the bag. The rivet 28 extends through one reinforcing bar 2|, preferably that bar on the front side wall l0 and is clinched to the inner side of the bag against the inner face of the reinforcing bar. It will thus be seen that the closure fastener C swings on the rivet 28 as an axis in opening and closing. In an intermediate portion on each leg 23 of the closure fastener, the leg is depressed in a circular area to form a round gripping teat 28. In the closed position, when the upper edges of the front and side walls, and the reinforcing bars are in abutment, the crown'22 overlaps the upper edges and the depending legs grip the side margins thereby holding the margins in abutting relation under the tension or clamping action of the teats 28.

It will thus be seen that a bag constructed as described has all of the edges about the open mouth in the same plane, and moreover, the hem about the mouth forms a channel at the upper edge of the side and rear walls to receive the reinforcing bars. It will also be obvious that the pencil bag shown in Figure 8 of the drawing may have the open mouth along the length of thebag as well as across the width thereof as shown in the drawing. y y Y l Having described my invention, what I claim is:

A bag comprising a body open at its top and having side and end walls the upper ends of which are flush with each other, said body being formed from a blank of flexible material folded midway its length to form the side walls and the side walls having triangular end extensions folded inwardly and constituting companion end wall sections having their meeting side edges secured to each other by inturned seams to provide tri angular end walls each formed withV an inturned vertical seam midway its width and having its apex directed downwardly, resilient reinforcing strips extending along the inner faces of the side walls at the top of the body for the full width thereof, the said side Walls having their upper ends folded inwardly and secured to form hems enclosing said strips and having their upper edges ush with upper edges of the end walls, and a latch having a fastener passing through one strip and the hem enclosing the same and mounting the latch for movement into and out of position to straddle both strips intermediate the length thereof and secure the bag closed with the end walls folded inwardly to a flat collapsed position between the side walls, and said strips being flexed towards each other by the latchwhen in f.

a closed position to hold the hems in face to Vface I engagement with each other between the inturned end walls and form a tight closurefor

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