IMPROVEMENTS IN APPARATUS FOR THE MANUFACTURE OF PAPER BAGS
Year: 1880

page_text: LETTERS PATENT to James Baldwin, of Birmingham, in the County of
Warwick, Manufacturer, for an Invention of "IMPROVEMENTS IN APPARATUS
FOR THE MANUFACTURE OF PAPER BAGS."
PROVISIONAL SPECIFICATION left by the said James Baldwin at the Office
of the Commissioners of Patents on the 28th September 1880.
JAMES BALDWIN, of Birmingham, in the County of Warwick, Manufacturer.
"IMPROVEMENTS IN APPARATUS FOR THE MANUFACTURE OF PAPER BAGS."
This Invention consists of certain improved apparatus to be employed for the
purpose of saving labour in the making of square bottomed paper bags, one form
of which apparatus is shewn in the accompanying Drawings.
Figure 1 represents the ordinary tynpan or template of metal, which is placed
upon a rectangular sheet of paper, which is then pasted on the edge (a) to the
outline of the cut out edge of the tynpan. This pasted sheet is then laid, as at (b),
Figure 2, upon the flat surface (c) of my improved folding apparatus, and up to
the guage studs (d). Whilst in this position a second tynpan (e) which is hinged
as at (f) to the wood block (g) is brought down on the paper as at (e), and the
sides (h), (i), of the paper, one of which has been already pasted under the tympan
shewn in Figure 1, are folded and overlapped by the operator, and the tynpan (e)
with the paper surrounding it in the form of a tube is turned over on to the
block (g), as seen in Figure 3; the operator then opens the end of the paper tube
beyond the line (k), (l), Figure 3, and doubles in the parts to the form, the bottom
to the semi-octagonal form of the tynpan (e), and thus also forming the overlap (m).
The second overlap (nl) is formed by taking a guide plate, shewn in plan and
section, Figure 4, and in dotted lines, Figure 3, and laying this guide plate upon
the partly formed bag until its edge rests on the guage studs (o), the triangular
part (n) is turned over on to the guide plate, and is thus formed precisely the same
size as (m), and the bag is complete.
The tynpan (e) may be hinged at any suitable angle on the block (9) so as to
facilitate the removal of the bag from the tynpan without drawing it overhand,
and it may also be divided in its length and hinged, as shewn at (P), so that the
operator can remove the bag by raising the upper part of the tympan (e) towards
him and drawing the bag forward.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Baldwin in the Great Seal Patent Office on the 28th March
1881.
JAMES BALDWIN, of Birmingham, in the County of Warwick, Manufacturer.
"IMPROVEMENTS IN APPARATUS FOR THE MANUFACTURE OF PAPER BAGS."
This Invention consists of certain improved apparatus to be employed for the
purpose of saving labour in the making of square bottomed paper bags, one form
of which apparatus is shewn in the accompanying Drawings.
Figure 1 represents the ordinary tynpan or template of metal mounted and
hinged upon a block. Under this metal tynpan a rectangular sheet of paper is
laid upon the block, which paper is then pasted on the edge (a) to the outline of
the cut out edge of the tympan. This pasted sheet is then laid as at b, (Figure 2).
upon the flat surface (c) of my improved folding apparatus, and up to the guage
studs (d); whilst in this position a second tynapan (c), which is hinged as at (ƒ)
to the wood block (g), is brought down on the paper as at (e), and the sides (h, i,)
of the paper, one of which has been already pasted under the tynpan shewn in
(Figure 1), are folded and overlapped by the operator, and the tympan (e), with the
paper surrounding it in the form of a tube, is turned over on to the block (g), as
seen in (Figure 3); the operator then opens the end of the paper tube beyond the
line (,, Figure 3), and doubles in the parts to form the bottom to the semi
octagonal form of the tynpan (e), and thus also forming the overlap (m).
second overlap (n¹) is formed by taking a guide plate, shewn in plan and section
(Figure 4), and in dotted lines (Figure 3), and laying this guide plate upon the
partly formed bag until its edge rests on the guage studs (o), the triangular part (n)
is turned over on the guide plate, and is thus formed precisely the same size as (m),
and the bag is complete. The tynpan (e) may be hinged at any suitable angle on
the block (g) so as to facilitate the removal of the bag from the tynpan without
drawing it overhand, and it may also be divided in its length and binged so that
the operator can remove the bag by raising the upper part of the tynpan (e) towards
him and drawing the bag forward.
The
Having thus described the nature of the said Invention, and in what manner the
same is to be performed, I claim, without limiting myself to these precise details,
the improvements in apparatus for the manufacture of paper bags, substantially
as herein more fully set forth and specified.
In witness whereof, I, the said James Baldwin, have hereunto set my hand and
seal, this Twenty fifth day of March, in the year of our Lord One thousand
eight hundred and eighty one.
JAMES BALDWIN. (L.S.)