IM- PROVEMENTS IN MACHINERY OR APPARATUS FOR MAKING PAPER BAGS.” PROVEMENTS IN MACHINERY OR APPARATUS FOR MAKING PAPER BAGS
Year: 1874

page_text: LETTERS PATENT to Charles Anderson, of Fettykil, in the County
of Fife, North Britain, Paper Maker, for the Invention of "IM-
PROVEMENTS IN MACHINERY OR APPARATUS FOR MAKING PAPER BAGS.”
PROVEMENTS IN MACHINERY OR APPARATUS FOR MAKING PAPER BAGS.”
PROVISIONAL SPECIFICATION left by the said Charles Anderson at
the Office of the Commissioners of Patents, with his Petition, on
the 6th April 1874.
I, CHARLES ANDERSON, of Fettykil, in the County of Fife, North
Britain, Paper Maker, do hereby declare the nature of the said In-
vention of "IMPROVEMENTS IN MACHINERY OR APPARATUS FOR MAKING PAPER
BAGS," to be as follows, that is to say:―
This Invention which consists in improvements in machinery or appa- .
ratus for making paper bags relates to that part of such machines.
whereat the pasting or cementing of the joints at the side and bottom ·
of the bag is effected. As hitherto generally practised, the paper after
being folded and having the paste or cement laid on the parts to be
joined is passed between a web or felt, and the periphery of a cylinder:

page_text: or drum by which the joints of the bags are made. By this process the
excessive paste or cement squeezed out from between the joints requires
to be removed by hand after the bag has left the machine. This In-
vention then consists in the employment of means whereby the exces-
sive paste or cement is removed before the bag leaves the machine, and
for this purpose a second endless travelling web or felt is employed,
between which and the first web or felt the bag is inserted and carried
round the drum or cylinder, and thence backwards to a delivery table
placed at the side of the cylinder or drum opposite to that at which the
paper bag in fed into the machine. The webs or felts are passed nearly
round the cylinder or drum and 'over stenting rollers so as to keep their
inner surfaces in close contact, and as the excessive paste or cement
is squeezed out or expressed from the joints of the bag it is wiped off
by these webs or felts, and the operation of making the bag is thereby
facilitated.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Charles Anderson in the Great Seal Patent Office
on the 3rd October 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
ANDERSON, of Fettykil, in the County of Fife, North Britain, Paper
Maker, send greeting.
°
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Sixth day of April, in the year of our
Lord One thousand eight hundred and seventy-four, in the 37th
year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Charles Anderson, Her special license
that I, the said Charles Anderson, my executors; administrators, and
assigns, or such others as I, the said Charles Anderson, my executors,
administrators, or assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein
expressed, should and lawfully might make, usc, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY
OR APPARATUS FOR MAKING PAPER BAGS," upon the condition (amongst
others) that I, the said Charles Anderson, by an instrument in writing:

page_text: under my hand and seal, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was to
be performed, and cause the same to be filed in the Great Seal Patent
Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said Charles Anderson, do licreby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawings
and to the letters and figures marked thereon, that is to say :-
My said Invention which relates to improvements in machinery or
apparatus for making paper bags relates to that part of such machines
whercat the drying and finishing of the joints at the side and bottom
of the bag is completed. As hitherto generally practised the paper after
being folded and having the paste or cement laid on the parts to be
joined is passed between a web or felt, and the periphery of a drying
cylinder or drum by which the joints of the bag are made. By this
process any excessive paste or cement on the bag is squeezed out from
between the joints by hand after the bag has left the machine. My said
Invention then consists of means whereby the excessive paste or cement
is removed before the bag leaves the drying machine, and for this.
purpose a second endless travelling web or felt is employed between.
which and the first web or felt the bag is inserted and carried round the
drum or cylinder, and thence backwards to a delivery table placed at the
side of the cylinder or drum opposite to that at which the paper bag is.
fed into the machine. The webs or felts are passed nearly round the
cylinder or drum and over stenting rollers, so as to keep their inner
surfaces in close contact, and as the excessive paste or cement is:
squeezed out or expressed from the joints of the bag it is wiped off
by the outer web or felt, and the operation of making the bag is thereby
facilitated.
And in order that my said Invention may be properly understood I
now proceed more particularly to set forth the system, mode, or manner
in or under which the same is or may be used or practically carried into
effect, reference being had to the accompanying Sheet of Drawings and
to the letters and figures marked thereon, that is to say: -
Figure 1 on the appended Sheet of Drawings is a side elevation, and

page_text: Figure 2 an elevation of the end marked X, Figure 1, of a paper bag
drying and pressing drum of the usual form and construction, and
having two felts or webs applied thereto in accordance with my In-
vention.
In the standards A are carried the bearings supporting the shaft C, as
shewn, upon which the drum B is secured. The shaft C which is as
usual made hollow to permit of the passage of steam therethrough to
the inside of the drum B is caused to revolve by the pinion D driven by
the pulley D', and gearing into the spur wheel E keyed on the said
shaft C. At suitable points in the circumferences of the standards A
lugs a are situated which carry rollers 6 extending across the breadth of
the drum B. A second set of rollers c is carried in brackets d situated
on the standards A, as shown. These rollers c also extend across the
breadth of the drum B, but are held at a greater distance from the
periphery thereof than the rollers b. Endless felts or webs G and H are
passed over these rollers in such a manner as to embrace the greater
portion of the drum B which drives the felts or webs G and H by friction
in the direction indicated by the arrows. The bag indicated on the
Drawing by the dotted line e, issues from the machine where it has been
cut and pasted between the rollers f, f, on to the upper side of the felt
or web G passing at that point over the roller K, supported in the
bracket %, bolted to the side of the framing L of the bag cutting and
pasting machine. That portion of the web H near to the roller K comes
in contact with the web G, the bag is thereby grasped between the webs
and carried by them round the drum B until the point S is reached,
when the felts or webs with the bag still between them passes back
from the drum B and over the rollers b, in the direction indicated by the
arrows to a point at the other side of the machine, almost directly
opposite to that at which they leave the surface of the drum B. On
arriving at this point the webs separate, the web H passing over the
outer set of rollers c to the front of the machine, and the web G passing
partly round a roller m carried in brackets d', and thence partly round
one of the rollers to a stenting roller g situate at the foot of the
machine by which it may be tightened or slackened, and thence under
the machine back to the roller K at the feeding end of the machine.
At the point of divergence of the webs or felts G and H, the bag e
in falling from between the felts or webs into a trough or other re-
ceptacle M supported in the arms 1, bolted to the standards A, strikes

page_text: against a guard i, whereby it is caused to drop and lie evenly in the said
trough M. The bag in its passage between the felts or webs G and H
is freed from excessive paste or cement which is squeezed out from
between the joints by the pressing action of the webs or felts, and
such paste or cement is by these webs or felts wiped off from the said
joints. The sticking together of the bags in the receptacle M which
obtains under the system of making paper bags now in use is obviated,
and the production of such bags is thus facilatated.
By delivering the bags at the side of the drying and pressing cylinder
B opposite to that at which they enter between the felts G and H,.in
contradistinction to existing arrangements, a number of the machines
may be made to occupy less space than hitherto, as the necessity for
the attendant passing between the machines to collect the bags is
obviated, and the danger arising therefrom is avoided.
Having now described and particularly ascertained the nature of my
said Invention, and the system, mode, or manner in or under which the
same is or may be used or practically carried into effect, I would
observe in conclusion that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the herein-before
in part recited Letters Patent is, the arrangement and construction of
paper bag drying and pressing machine, wherein two felts or webs are
employed to cleanse the excessive paste or other adhesive matter from
the joints of the bag, and wherein the delivery of the finished bag from
the machine is effected at a point nearly opposite to that at which it
entered the machine, substantially as herein-before described and shewn
on the Sheet of Drawings hereunto annexed.
In witness whereof, I, the said Charles Anderson, have hereunto
set my hand and scal, this First day of October One thousand
eight hundred and seventy-four.