US2817474A - Paper bags - Google Patents

Description

Dec. 24, 1957 A. A. ABRAMSON 2,817,474

PAPER BAGS Filed Dec. a l, 1954 I A l4 IO U l4 E l: l I l l l' l4 l3 5 l4 l2 --4 4 3 FIG I I I i A INVEN TOR. ALVIN -A'. ABRAMSON ATTORNEY United States Patent PAPERBAGS Alvin A. Abramson, St; Louis, Mo., assignor to Central States Paper & Bag Co., St. Louis, M0., a corporation of Missouri Application December 31, 1954, SerialNo. 479,172

2 Claims. (Cl. 229-57) This invention relates in general to certain new and useful improvements in paper bags and, more particularly, to a can bag.

Tin cans used for packaging food products, liquids, paints, and many other similar materials are usually made up in a wide variety of different sizes and shapes to accommodate the different types of materials to be housed therein. All such cans, however, are ordinarily of cylindrical contour and are provided at the top and the bottom with a relatively heavy rim or head by which the flat top and bottom walls are secured to the cylindrical side walls. Since these cans are empty, they are relatively light in weight, but comparatively bulky and, therefore, create serious problems in shipment from the can factory to the point of ultimate use. Because of the low cost of empty tin cans, it is essential that the packaging be very inexpensive and, at the same time, be sutlicient to permit convenient speedy handling of bulk packages of empty tin cans and, at the same time, afford the empty tin cans with a reasonable measure of protection against damage during shipment and handling.

For this purpose, it has become a widely accepted practice in the can-making industry to enclose a group of tin cans within a rather large paper bag so that the group of tin cans can be readily packed, handled, and otherwise dealt with during transportation and storage prior to use.

Usually, several dozen empty tin cans will be included in a single bag made of heavy kraft paper. A quantity of tin cans of this size is not particularly heavy and usually, by virtue of the shape and proportions of the bag, will become a rectangular package of such shape and proportions which is economical and convenient for shipping and storage purposes. However, the we1gh-t of the tin cans tends to impose rather severe stress on the paper from which the bag is made. This is particularly critical at the bottom portion of the bag where the bead or l'll'lldefining edges of the tin can tend to abraid, wear, and damage the paper of the bag. As a result, the bottom frequently drops out of a can bag and the entire group of tin cans will fall out upon the floor and scatter in all directions, damaging the cans and wasting a great deal of time on the part of the workmen who are handling such packages. I

It is, therefore, the primary object of the present invention to provide a new and novel type of can bag having a bottom constructed in such a manner as to resist the normal wear and stresses encountered during storage and shipment of empty tin cans.

It is another object of the present invention to provide a can bag of the type stated which is simple and economical in construction and is, nevertheless, unusually durable under conditions of actual use.

It is a further object of the present invention to provide a can bag of the type stated which may be easily and conveniently loaded with empty tin cans and can be readily handled in the course of shipment and storage.

With the above and other objects in view, my invention resides in the novel features of form, construction, arrangement, and combination. of parts presently described. and pointed out in the claims.

In the accompanying drawings Figure 1 is a plan view of a canbag constructed in accordance with and embodying the present invention and illustrating the can bag in folded up orv inoperative position;

Figure 2 is a perspective View of a can bag opened up for the reception of empty tin, cans;

Figure 3 is a transverse sectional view taken along line. 33 of Figure 2;

Figure 4 is a longitudinal sectional view taken along line 4-4 of Figure 3; and

Figure 5 is a fragmentary perspective view, partly broken away and in section, showing a tin can in place within the can bag of the present invention for the purpose of illustrating the reinforcement of the bag bottom which forms an important part of the present invention.

Referring now in more detail and by reference characters to the drawings, which illustrate a preferred embodiment of the present invention, A designates a can bag comprising two rectangular sheets of heavy kraft paper 1, 2, adhesively secured together along their short margins by flat overlapping scams 3, 4, in the provision of a bag forming tube. Set into the bottom of the bag forming tube is a bottom 5 formed preferably of heavy straw board or similar cardboard. The bottom 5 is integrally provided around its four margins with upwardly turned narrow hinges 6, '7, 8, 9, all of which are mitered at their corners, and are adhesively secured to the interior faces of the tube-forming sheets 1, 2, the latter being, in turn, folded inwardly across the under face of the bottom wall 5 and adhesively secured thereto in the provision of bottom securement flanges 10, 11, 12, 13. As will be noted by reference to Figure 1, the flanges 10, 11, 12, 13, are, in effect, continuous since the sheets 1, 2, are secured together in tubular formation and the corners of the flanges 1t 11, 12, 13, are folded under and miter-folded as at 14.

When the bag A is opened up and filled with tin cans, it will assume somewhat rectilinear shape, as shown in Figures 2, 3, and 4, with the flanges 10, 11, 12, 13, extending flatwise along the under face of the bottom 5 and the flanges 6, 7, 8, 9, extending vertically upwardly along the interior faces of the bag A to form reinforcing flanges against which the head I) of a can C will bear. Thus, the bottom fold or margin of the bag is strongly reinforced and the bag will consequently be extremely durable under conditions of actual use. The top of the bag may then be folded over and closed in any suitable or conventional manner to completely enclose the contents.

It should be understood that changes and modifications in the form, construction, arrangement, and combination of the several parts of the paper bags may be made and substituted for those herein shown and described without departing from the nature and principle of my invention.

Having thus described my invention, what. I claim and desire to secure by Letters Patent is:

1. A bag for shipping cans and similar bulky articles, which bag comprises an open-topped tubular shell having overlapping seams which extend along opposite side walls of the tubular shell when the latter is opened up whereby to increase the longitudinal rigidity of the said opened shell, and a flat rectangular heavy cardboard bottom wall extending across the bot-tom end of said tubular shell, said cardboard bottom wall integrally including flanges coextensive with and extending upwardly from each edge, said flanges being hingedly connected to said edges and being adhesively secured facewise against the interior faces of the shell, said tubular shell also having marginal flanges extending inwardly over the outer face of the bottom wall and being adhesively secured facewise thereto so as to form a substantially continuous band around the margins of the outer face of the bottom wall.

2. A bag for shipping cans and similar bulky articles, which bag comprises an open-topped tubular shell having overlapping seams which extend along opposite side walls of the tubular shell when the latter is opened up whereby to increase the longitudinal rigidity of the said opened shell, and a fiat rectangular heavy cardboard bottom wall extending across the bottom end of said tubular shell, said cardboard bottom wall integrally including flanges coextensive with and extending upwardly fro-m each edge, said flanges being hingedly connected to said edges and being adhesively secured facewise against the interior faces of 15 2,678,768

References Cited in the file of this patent UNITED STATES PATENTS 7 333,523 Honiss Jan. 5, 1886 717,621 Read Jan. 6, 1903 1,701,097 Broderick Feb. 5, 1929 2,581,826 Yount Jan. 8, 1952 2,652,972 Davis Sept. 22, 1953 Vergobbi May 18, 1954

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