Process of Making Round-Bottomed Paper Bags. Page: 2 of 3
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UNITED STATES PATENT OFFICE.
LEILA M. JOHNSTON, OF COLEMAN, TEXAS.1,127,258.
PROCESS OF MAKING ROUND-BOTTOMED PAPER BAGS.
Specification of Letters Patent. Patented Feb. 2, 1915.
Application filed April 7, 1914. Serial No. 830,213.o all whom it may concern:
Be it known that I, LEILA M. JOHNSTON,
a citizen of the United States, residing at
Coleman, in the county of Coleman and
5 State of Texas, have invented certain new
and useful Improvements in Processes of
Making Round-Bottomed Paper Bags; and
I do hereby declare the following to be a
fi l1, clear, and exact description of the in-
]0 vention, such as will enable others skilled in
the art to which it appertains to make and
ui se the same.
This invention relates to processes of
ia king round-bottomed paper bags and one
15 of the principal objects of the same is to
provide a paper bag which can be made of
two pieces, which can be quickly assembled
to form the bag, and in which the process
of manufacture and the labor involved will
20 be economical, and in which there will be
ro waste paper.
Another object of the invention is to pro-
vide an economic process or method of
forming paper bags which will be economi-
25 cal both in the saving of stock and labor
and which will produce a very superior
paper bag for many purposes.
These and other objects may be- attained
by means of the construction illustrated in
30 the accompanying drawing, in which,
Figure 1 is a horizontal sectional view
taken on the line 1-1 of Fig. 2, Fig. 2 is
a side elevation and partial section of the
lower end or bottom of the bag, and Fig. 3
35 is a detail sectional view of a slightly modi-
fied form of the invention, showing a rein-
forcing band encircling the bag at the bot-
tom.
Referring to the drawing, the numeral 1
40 designates the tubular portion or body of
the bag and 2 is the round bottom thereof.
An upwardly turned annular flange 3 is
formed on the bottom 2 and this flange is
inserted within the bottom of the body por-
45 tion 1 of the bag and secured by a suitable
adhesive substance like paste. In carrying
out the method or process of making paper
bags in accordance with this invention a
circular form of the required size is pro-
50 vided and a strip of paper is cut of suffi-cient length and width to extend around
the form and to be connected by overlap-
ping edges as at 4. The tubular blank is
then removed from the form or mandrel
and cut into the length desired for the bag. 55
The bottom 2 is formed by cutting a num-
ber of disks of the required size from the
paper and bending up the flanges 3 of a
size or diameter to fit nicely within the
tubular portion 1 of the bag. The.tubular 60
portion 1 is then inserted on a form and
the bottom 2 is placed on top of the form
and the tubular portion is then drawn up-
ward and connected to the flange 3 by an
adhesive substance, after which the bag is 65
dried.
There are many advantages in the use of
a round bottomed paper bag. Many arti-
cles sold in the general market are of cy-
lindrical form, like can goods for instance 70
and a circular bag to inclose such articles
furnish a neat package and are more read-
ily utilized for its purpose. Another ad-
vantage of a paper bag made with a round
bottom and in which the flange of the bot- 75
tom is inserted within the end of the tubu-
lar portion, resides in the fact that granu-.
lar material like flour, sugar and similar
pulverized or granular material will not
gather around the corners as is the case in So
the ordinary regular paper bags, and when
it is desired to empty the contents of the
bag every particle can be quickly emptied
out, since there are no nooks or corners to
conceal portions of the granular material. 85
As shown in Fig. 3, a reinforcing band
la surrounds the bag at the, bottom, and
said band extends up even with the upper
edge of the flange 3 of the bottom. The
lower edge of the reinforcing band 1a is 90'
flush with the bottom.
What is claimed is:-
A method of making paper bags which
consists in forming a long paper tube, se-
curing the overlapping edges of the tube 95
together by an adhesive substance, cutting
the tube into suitable. lengths, cutting out
a number of circular blanks for the bottoms
of the bags, turning up a flange around the
blanks, applying an adhesive substance to 100
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Johnston, Leila M. Process of Making Round-Bottomed Paper Bags., patent, February 2, 1915; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth859978/m1/2/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.