US2364886A - Paper bag - Google Patents

Description

2 sheets-sheet 1 H. A. WOLF I PAPER BAG Filed June 25, 1942 w. ff

Dec. 12, 1944.

gmk/g ns Dec. 12, 1944. H 'A WOLF 2,364,886

PAPER BAG Filed June 23, 1942 2 sheets-sheet 2 Patented Dec. 12, l1944 PAPER BAG Howard A. Wolf, Philadelphia, Pa., assigner to Louis Wolf, Elias Wolf, Howard A. Wolf, and Walter L. Wolf, copartners doing business as Wolf Brothers, Philadelphia, Pa.

' Application June`23, 1942, Serial No. 448,077 01. 229-54) 4 2 Claims.

This invention relates to an improvement in paper bags and more particularly to that type of bag generally known as a carry bag.

Bags of the type to which this invention relates have heretofore been Well known and have proved highly desirable for the convenient packaging and transporting of various articles. However, iit has been found in practice that the use of such bags has been substantially limited to the packaging of articles; of relatively light Weight, since in general they are economically produced and conveniently handled only in relatively light Weight paper stocks vof limited strength.

Now in accordance with this invention a bag of the type indicated is providedwith use in the main of the same type of relatively light paper stock as has been used heretofore, but so constructed as to lend itself tothe packaging and transportation of articles of relatively great weight.

Generally speaking, the bag in accordance with this invention may be of the end folded type construction, or other desired construction, and may be formed by hand or with the use of any Well known mechanism. The bag Will be essentially distinguished from bags ofthe carry type as heretofore known by the provision of a particular continuous reinforcing member of rela- Figure 6 is a view similar to that'of Figure 5 showing the upper end of the bag with the closing flap closed. I

Figure is a plan view of a blank ready for folding embodying a modied form of thisinvention.

Figure 8 is a sectional View on line 8-8 Figure 7.

The essential elements of a bag of ther end fold type, according to this invention, are shown in `the blanks illustrated in Figures 1 and 2, in which I indicates the front Wall, an extension of which tively heavy paper stock secured to the body of the bag in a particular manner and itself reinforced with reinforcing members of relatively heavy paper stock located at the points at which the strains are concentrated when the bag is carried, thereby at once reinforcing the handle and body of the bag and providing a support, Which may be adhered to .the walls of the bag or may be largely independent of the walls of the bag, for the `Weight of an article packaged therein.

Having now indicated in a general Way the nature and purpose of this invention, I will procee-d to a detailed description of preferred embodiments thereof With reference to the accompanying drawings, in which:

Figure 1 is a plan View of a blank ready for folding to form a bag according to one form of this invention.

Figure 2 is a sectional View on line 2 2 Figure 1.

Figure 3 is a rear View of a bag according to this invention, with the closing ap open.

Figure 4 is a rear View of the upper portion of the bag shown in Figure 3, with the closing flap closed.

Figure 5 is a diagrammatic,` vertical sectional View of the bag shown in Figure 2, with the closing flap closed.

formsa closing. flap `2 adapted to be folded on the line 3-3, and lateral extensions of which form flaps 4, 4 by which the Walls of the bag are secured together as will appear. The rear wall of bag 5 is adapted to be folded against the front Wall on the line 6-6 and the flaps 4, 4 folded over and pasted inside the rear Wall act to secure the walls.

A strip of relatively heavy paper stock, or other relatively strong material, and desirably of substantial width, for example, of a width of about 1/3 that of the :bag walls, `but in any event of sufficient width to extend sufficiently beyond the end of the finger openings 9, '9 to supply required additional strength, extends throughout the median portion of the walls and closure flap, from the free edge of the rear wall to the free edge of the closure flap. As shown in Figure 1, the strip 'I is secured to the Walls I and 5 in areas or zones 8 by means of layers of adhesive I2, I2 adjacent to the upper edges of the walls and throughout its extension with reference to the I closure flap, or, as shown in Figure 7, it may be secured by adhesive throughout its length.

Adjacent the ends of the walls I and 5 and extending to the free edge of the closing ap 2 are reinforcing members I3, I3. The reinforcing members I3, I3 overle and are adhered to the reinforcing strip l by means of layers of adhesive I4. Desirably, the members I3, I3 are in area coincident with the zones 8 in which the strip 'l is secured to the Walls I and 5, as shown in Figure 1, or with Zones of similar extent Where the strip 'I is secured throughout its length as shown in Figure 7. l

The finger openings 9 are formed in the front and back walls adjacent their upper edges and extend through the 'strip 'I andmember I3, I3. In the structure shown in Figure 1, the finger openings 9 are formed Within the zones of pasting 8 so that about the openings the walls of the bag and the strip 'I and the members I3, I3 are united.

In the closing iiap 2 a locking tongue III is formed by slitting the flap, strip I and member I3 from their free edges, it being noted that the locking tongue I0 will align with the openings 5 when the flap is closed and being somewhat longer than the linger openings will, on being passed therethrough, act to lock the closure flap in closed position. Further, it will be noted that the tongue I0 is formed in the zone of pasting by which the strip 'I is secure to the closing ap.

Where according to this invention the strip 1, which will be in eiect a reinforcing strip, is see cured to the walls of the bag, as by pasting, only in the zones 8 at the upper ends of the walls and in the zone 8 in the closing flap, the strip being otherwise free in its extension. In certain cases it may be desirable to secure the strip `I at ythe bottom of the bag, as by pasting in a zone II through which the fold line 6-6 passes, as shown in Figure 1.

In the completed bag, as, for example, shown in Figure 3, the strip 'I will extend from end to end of the bag interiorly and secured at its end portions, or throughout its length, will serve to support the principal Weight of an object packaged in the bag Without distortion of the bag as a whole or placing undue strain on the material thereof as a whole. At the same time, the members I3, I3 will reinforce the strip about the handle or finger openings 9, in the areas in which strain is concentrated when the bag is carried.

This application is a continuation in part of an application led by me, Serial No. 368,774,y filed December 6, 1940.

What I claim and desire to protect by Letters Patent is:

l. A paper carry bag comprising front and back Walls, a closure flap formed by an extension of one of the Walls, aligning apertures in the walls adjacent the open end of the bag, and a strip of material of greater strength than that of the material of the bag walls and of greater Width than said aligning apertures extending continuously Within the bag adjacent the walls thereof and to the free edge of the closing flap and secured to the closing flap throughout its extension with relation thereto and to the walls of the bag respectively in zones adjacent the open end of the bag, the said strip being free of the walls of the bag in its-extension to a point adjacent the bottom of the bag and having openings aligning with the openings in the walls of the bag.

2. A paper carry bag comprising front and back Walls, a closure ap formed by an extension of one of the walls, aligning apertures in the walls adjacent the open end of the bag, and a strip of material o f greater strength than that of the material of the bag walls and of greater Width A than said aligning apertures extending continuously within the bag and secured to the Walls of the bag respectively only in zones at its end portions surrounding the apertures in the walls of the bag and apertures in the strip aligning with the apertures in the Walls of the bag.

HOWARD A. WOLF.

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