A NEW METHOD OF LINING OR COATING PAPER WITH MUSLIN OR OTHER SIMILAR MATERIAL
Year: 1879

page_text: LETTERS PATENT to Charles James Cropper, of Burneside Mills, Kendal, in the
County of Westmorland, Paper Manufacturer, for the Invention of "A NEW
METHOD OF LINING OR COATING PAPER WITH MUSLIN OR OTHER SIMILAR
MATERIAL"
ealed the 5th December 1879, and dated the 5th June 1879.
PROVISIONAL SPECIFICATION left by the said Charles James Cropper at the
Office of the Commissioners of Patents on the 5th June 1879.
CHARLES JAMES CROPPER, of Burneside Mills, Kendal, in the County of West-
morland, Paper Manufacturer. "A NEW METHOD OF LINING OR COATING
PAPER WITH MUSLIN OR OTHER SIMILAR MATERIAL"
"
The muslin gauze, or open calico, or other suitable material is applied to the
paper during the process of its manufacture by means of a
one sided " or
"American" paper making machine. The muslin or other similar material on a
reel is introduced into the machinery so that it can be run off upon the paper in
any of its moist or pulpy stages, and either between the paper and the wet felt
immediately after the paper leaves the couch roll, or between the paper and the
drying cylinder, by either of which means, without any alteration in the process of
the manufacture of the paper, the muslin or other similar material and the paper
are so pressed together that they firmly adhere and can be used as one material.
They are then carried together round the large drying cylinder, where the paper is
glazed and dried, together with the muslin or other similar material, the muslin side
being left rough.
The said Invention also includes the production of a material with paper on
both sides, and muslin or other similar material as a middle substance or lining;
this can be obtained by reeling off the muslin lined paper when finished as before
described, and again applying the muslin side of it similarly to paper in course of
manufacture so as also to face the muslin side with such paper.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Charles James Cropper in the Great Seal Patent Office on the
5th December 1879.
CHARLES JAMES CROPPER, of Burneside Mills, Kendal, in the County of West-
moreland, Paper Manufacturer. "A NEW METHOD OF LINING OR COATING PAPER
WITH MUSLIN OR OTHER SIMILAR MATERIAL."
The Invention relates to an improvement of the present method of lining or
coating paper with muslin gauze, open calico, cloth, or other similar material for
the purpose of strengthening paper used for envelopes and other purposes where
strength is required.
The ordinary method of lining or coating the paper with the muslin gauze, open
calico, cloth, or other similar material, is by laying the muslin gauze, open calico,
cloth, or other similar material upon the paper when the paper has been completely
manufactured, and by fixing the same thereto with gum, paste, or other similar
adhesive matter.
This is an operation subsequent to and distinct from the manufacture of the
paper, and involves the employment of persons other than those engaged in the
manufacture of the paper. and also the use by them of gum, paste, or other similar
adhesive matter.
"
"
The necessity for any distinct operation and the use of any adhesive matter is
obviated and additional advantages gained in my Invention by applying the
muslin gauze, open calico, cloth, or other similar material to the paper during the
process of the manufacture of such paper by means of a one sided" or "American'
paper making machine at any of the moist or pulpy stages of the paper in course
of manufacture, so that the muslin gauze, open calico, cloth, or other similar
material, becomes pressed upon and into the surface of the paper in the course of
its manufacture.
In carrying out my Invention the muslin gauze, open calico, cloth, or other
similar material on a reel is introduced into the paper making machinery, so that
it can be run off upon the paper in any of its moist or pulpy stages, and either
between the paper and the wet felt immediately after the paper leaves the couch
roll, or between the paper and the drying cylinder, by either of which means, and
without any other alteration in the process of the manufacture of the paper, the
muslin gauze, open calico, cloth, or other similar material and the paper are so pressed
together that they firmly adhere (without the use of any adhesive matter) and can
. be used as one material. They are then carried together round the large drying
cylinder, where the paper is glazed and dried as in the ordinary manner, together
with the muslin gauze, open calico, cloth, or other similar material, the muslin side
being left rough.
If it be desired to produce a material with paper on both sides, and muslin gauze,
open calico, cloth, or other similar material as a middle substance or lining, this
.can be obtained by reeling off the muslin lined paper when finished as before des-
cribed, and again applying the muslin or coated side of it similarly to paper in
course of manufacture, so as also to face the muslin or coated side with such
paper.
Having now described or particularly ascertained the nature of my said Inven-
tion, and in what manner the same is or may be used or carried into effect, I
would state in conclusion that what I consider to be novel and original, and
therefore claim as the Invention secured to me by the hereinbefore in part recited
Letters Patent is,-
First. The production of muslin or similarly lined or coated paper without any
operation subsequent to, or distinct from, the manufacture of such paper.
Second. The production of such muslin or similarly lined or coated paper without
the use of any gum, paste, or other adhesive matter.
E

page_text: Third. The production of such muslin or similarly lined or coated paper by
introducing the muslin or other similar material, and applying it to the paper in
the early stages of the manufacture of such paper.
Fourth. The production of such muslin or similarly lined or coated paper in
manner hereinbefore described, without any other change or alteration in the manu-
facture of such paper than is involved in the mere introduction of the muslin or
other similar material in manner above mentioned.
In witness whereof, I, the said Charles James Cropper, have hereunto set
my hand and seal, this Twentieth day of November, in the year of our
Lord One thousand eight hundred and seventy nine.
CHARLES J. CROPPER. (L.S.)