US1716818A

US1716818A - Paper bag

Info

Publication number: US1716818A
Application number: US240733A
Authority: US
Inventors: Talbot H Hammond
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-12-17
Filing date: 1927-12-17
Publication date: 1929-06-11
Anticipated expiration: 1946-06-11

Description

June 11, 1929. H..HAMMOND PAPER BAG Filed Dec. 17, 1927 INVENTEIR HTTURNEY Patented June 11, 1929. f

UNITED STATES PATENT oFFrcE.

TALBOT H. HAMMOND, OF WELLSBURG, WEST VIRGINIA.

PAPER BAG.

Application filed December 17, l92'l. Serial No. 240,733.

This invention relates to improvements inpaper bags, and it has for its primary object to provide, in a paper bag of the type which embodies a satchel bottom, means whereby 5 such bottom is rendered deak-proof, thus adapting the bag for use as a container for materials of granulated or powdered form.

In the prevailing commercial forms of pa per bags of satchel-bottom type, the overlapping folds of-the bottom are designed to be held in closed relation by internal pressure exerted by the contents of the bag. However, leakage is frequen 1y permitted between'the folds; and in or er to overcome this, the practice of providing a double bottom has been resorted to, such double bottom being formed by applying a sealing strip or sheet of paper exteriorly to the satchel bottom, or

in enclosing relation to the folds. While such practice ismore or less eifective, it frequently occurs that the contents of the bag works through the bottom folds and, loosening the pasted-on enclosing sheet bylpressure upon thelatter, efiects its escape. Y

The present invention is designed toaove'rcome the above-recited objectionable features of the heretofore prevailing forms of bags of the type mentioned.

In describing the invention in detail, referenc'e is herein had to the accompanying draw ings, in which- Figure 1 is a planvview, partially broken,

of the bottom endof a collapsed paper bag as it appears prior to inward folding and sealing of the bottom flaps; Figure 2 is a section 7 V. c Figure 3 is a view similar to .Fig. 1, showing the bottom completed;

gigure 4 is a section on line 4.-'4=, Fig. 3; an

Figure 5 is a reduced interior view of the bottom end of the bag, expanded.

Referring to said drawings, the

reference characters

1 and 2 designate the opposite side ofthe same on line tubing; and 3 indicates the usual opposite inwardly turned folds of the bottom. In the walls of the body of a paper bag which is formed, as ordinarily, of a length of'paper' 2 so thatthe divergently related defining edge portions 4 of each will ordinarily be disposed substantially at right angles to each other,

- as shown.

Oppositely disposed

flaps

5 and 6 of substantially rectangular form are produced by slitting the paper of the tube,thereby to form the edge portions 7 and 8 of the folds 3 and the

flaps

5 and 6, respectively. The opposite edge portions 7 constitute the ends of rectangular extensions 3 of said folds 3, as shown in Fig. 1.

The reference characters 9 in Fig. 1 'cate lines upon which the bag is folded for turnlng the'fiaps 5 and 6 inwardly into the relatively-overlapping bottom-closing relat1on shown in Figs. 3 and 4 The bottom is permanently sealed in closed form by an adheslve applied to one or the other of said

flaps

5 and 6.

Due to the fact that the ends of the folds indi- 3 are free with respect to the

flaps

5 and 6, V

beingmerely seated upon the latter, leakage of the powdered or granulated contents of the bag more or less frequently occurs, such contents finding passage between the folds 3 and the innerflap 5.

The noted objectionable feature, which exists in all'priorbag structures of the character above described, is eliminated by my between the fold lines 9 and a portion of the inner flap 5, and has its opposite ends turned on said fold lines into underlying relation to the opposite end portions of said extensions 3*. So disposed, said sheet coacts with said folds 3 to close the unsealed openings against leakage.

What is claimed isi .A bag having a bottom provided with oppositely disposed inwardly turned parts which are spaced apart at their inner sides, oppositely disposed flaps extending outwardly for a distance beyond the respective top and bottom edges of the inwardly turned said sheet being bent over one another to disparts, and a flexible sheet of material dispose the flaps in overlapping relation, said posed between the flaps and the inwardly overlapped flaps extending across the space 10 turned parts and extending across the space between the said inwardly turned parts.

5 between said parts, the top and bottom por- In testimony whereof, I affix my signatnre.

tions of the said parts and the inner ends of the fleps together with the end portions of I TALBOT H. HAMMOND.