Improvements in and in the Manufacture of Paper Bags.
Year: 1899

page_text: Date of Application, 29th Mar., 1899
Complete Specification Left, 14th Dec., 1899-Accepted, 10th Feb., 1900
PROVISIONAL SPECIFICATION.
Improvements in and in the Manufacture of Paper Bags.
I, FREDERICK WILLIAM GOLBY, of 36, Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention as
communicated to me by Simon Krotoschin, of Goerlitz, Germany, Manufacturer,
to be as follows:-
The so called square paper bags have hitherto been made by hand by cutting
out a piece of paper of rectangular shape according to the size of the bag required
and gumming together the two side-edges of the paper, the end or bottom of
the incomplete bag being subsequently adjusted by the eye according to the size
of the bag when complete. In such manufacture care has to be taken that the
lines of folding or division of the parts shall overlap one another, and be properly
adjusted, as also that the free corners resulting from the lapping over shall be
properly adjusted in the direction of the bottom of the bag and suitably fastened
by pasting or otherwise. Thus all measurements are determined by the eyesight.
It is obvious that uniform size of the bags cannot be guaranteed even by the
most experienced work people using material of the same dimensions. More-
over, this method of production is too expensive, there being considerable loss
of time in carrying it out.
The object of the process or method of manufacturing paper bags which
constitutes the present invention is the production of bags exactly alike in form
and size, where material of the same dimensions is used, in about a quarter or a
sixth of the time hitherto necessary.
The uniformity of the work is assured by the following method. The lines of
folding are marked or impressed on the cut out sheets of paper or blanks, whilst
the work is facilitated by making the corners, which cause difficulty in adjusting
the bottom of the bags, free by suitable incisions or excisions, the difficulty being
thus completely overcome.
As will be seen the sheet of paper, cut out according to the requisite size, in
impressed or marked with the whole of the lines of folding, the cutting out of
the corners being effected by stamping, by this last proceeding, four similar
flaps are produced in pairs.
By folding the sheet of paper along the central longitudinal folding line and
gumming the free edges together the ordinary bag produced in its complete
form. The paper is then folded along the bottom folding line and the flap thus
formed is placed vertical to the upper part of the bag. By the folding of the side
bottom flaps towards the centre of the bottom, the whole of the bottom parts of
the bag will be brought to be in one plane. It is then only necessary to fold
the other flaps and to effect the pasting or gumming and the bag is finished.
The bags produced by this process have the further advantages that, when
D

page_text: the bags are printed with the name of the firm &c. an impression can be made
also on one of the larger bottom flaps, which is quite impossible with the bags
produced by the ordinary process.
It should be further remarked, that, by the new process, as by the old one
bags can be made consisting of several sheets..
. .f
Improvements in and in the Manufacture of Faper Bags.
I, FREDERICK WILLIAM GOLBY, of 36, Chancery Lane, in the County of
Middlesex, Patent Agent, do hereby declare the nature of this invention and in
what manner the same is to be performed, as communicated to. me by Simon
Krotoschin, of Goerlitz, Germany, Manufacturer, to be particularly described
and ascertained in and by the following statement:―
The so called square paper bags have hitherto been made by hand by cutting
out a piece of paper of rectangular shape according to the size of the bag required
and gumming together the two side-edges of the paper, the end or bottom of
the incomplete bag being subsequently adjusted by the eye according to the size
of the bag when complete. In such manufacture care has to be taken that the
lines of folding or division of the parts shall overlap one another, and be properly
adjusted, as also that the free corners resulting from the lapping over shall be
properly adjusted in the direction of the bottom of the bag and suitably fastened
by pasting or otherwise. Thus all measurements are determined by the eyesight.
It is obvious that uniform size of the bags cannot be guaranteed even by the
most experienced work people using material of the same dimensions. More-
over, this method of production is too expensive, there being considerable loss
of time in carrying it out.
The object of the process or method of manufacturing paper bags which
constitutes the present invention is the production of bags exactly alike in form
and size, where material of the same dimensions is used, in about a quarter or a
sixth of the time hitherto necessary.
The uniformity of the work is assured by the following method. The lines of
folding are marked or impressed on the cut out sheets of paper or blanks, whilst
the work is facilitated by making the corners, which cause difficulty in adjusting
the bottom of the bags, free by suitable incisions or excisions, the difficulty being
thus completely overcome.
The accompanying drawings illustrate two different kinds of bags, in different
stages of production according to the new process or method of manufacture.
Figs. 1 to 5 represent a bag of the ordinary kind and Figs. 6 to 12 a more
elaborate one.
As will be seen in Fig. 1 the sheet of paper, cut out according to the required
size is impressed or marked with the whole of the lines of folding, the cutting
out of the corners being effected by stamping. By this last proceeding, four
similar flaps abe and d are produced in pairs.
By folding this sheet of paper along the central longitudinal folding line 1
and gumming the free edges e together the ordinary bag is produced in its
incomplete form. The paper is then folded along the bottom folding line 2 and
the flap thus formed is placed vertical to the upper part of the bag (Fig. 2). By
the folding of the side bottom flaps b and d along the lines 3, 4, 5 and 6, towards

page_text: the centre of the bottom, the whole of the bottom parts of the bag will be brought
to be in one plane. (Fig. 3). It is then only necessary to fold the other flaps a
along the line (Fig. 4) and c along the line 8 and to effect the pasting or gumming
and the bag is finished.
The production of the folded bag illustrated in Figs. 6 to 12 is particularly
difficult under the old process. By the present process however its production
is as simple as that of the ordinary bag.
In this case also the sheet of paper cut out to the required size is marked or
impressed with the necessary lines of folding, the bottom corners being cut out
by stamping, with a similar result in regard to the production of four flaps a b c
and d in pairs. By folding or adjustment along the line 1, and making use of
the gumming edge e, the ordinary bag is produced. Thereupon, the folds are
creased in and the bag assumes the form shown in Fig. 7. The lower part of
the incomplete bag is then folded at the line 2 (Fig. 8) the folded part being
placed vertically, and the whole of the bottom flaps a b c and d being spread in a
plane, Fig. 9, thereupon the flaps and d are laid one after the other in the
direction of the centre of the bag bottom and finally the flaps a and c, and the
gumming or pasting is then effected (Figs. 11 and 12).
The bags produced by this process have the further advantage, that, when the
bags are printed with the name of the firm &c., an impression can be made also
on one of the larger bottom flaps a ore which is quite impossible with the bags
produced by the ordinary process.
It should be fu. ther remarked, that, by the new process, as by the old one,
bags can be made consisting of several sheets.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
(1) The process or method of manufacturing paper bags herein described
consisting in marking, or impressing the cut out sheet of paper or blank with
the lines of folding and making said blank with incisions or excisions at the
corners, which form the bag bottom, whereby four flaps are produced which, when
laid one over the other in conformity with the indicated lines of folding and
duly pasted or gummed, form the bottom of the bag, substantially as described.
(2) A paper bag produced according to the process or method of manufacture
mentioned in Claim 1 thereof.
Dated this 14th day of December 1899.
F. W. GOLBY,
Patent Agent, 36, Chancery Lane, London, W.C.