Ix- PROVEMENTS IN. THE MANUFACTURE OF TISSUE. PAPER FOR TRANSFERRING PATTERNS AND DESIGNS
Year: 1862

page_text: LETTERS PATENT to John Lamb, of the Holborn Paper Mills, New-
castle-under-Lyme, in the County of Stafford, for the Invention of "Ix-
PROVEMENTS IN. THE MANUFACTURE OF TISSUE. PAPER FOR TRANSFERRING
PATTERNS AND DESIGNS."
Sealed the 27th May 1863, and dated the 10th December 1862.
PROVISIONAL SPECIFICATION left by the said John Lamb at the Office
of the Commissioners of Patents, with his Petition, on the 10th
December 1862.
.
I, JOHN LAMB, of the Holborn Paper Mills, Newcastle-under-Lyme, in the
County of Stafford, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE MANUFACTURE OF TISSUE PAPER POR TRANSFERRING
PATTERNS AND DESIGNS," to be as follows:-
In manufacturing tissue paper for transferring patterns and designs on
porcelain, or for other purposes, it has heretofore been necessary to apply the
size to the surface of the paper before the impression is printed upon it. Now
my Invention consists in combining the size with the pulp in the ordinary rag
engines or other machinery now employed in preparing the pulp for the paper-
making machines, or in combining the size with the water with which the pulp
diluted previous to or when supplied to the paper-making machines, or in
sizing the paper in its progress through the paper-making machines.

page_text: From the experiments hitherto made I have found that one pound of size
combined with five pounds of paper pulp gives a good result; the proportions
may, however, require to be considerably varied, according to the peculiar
purpose for which the tissue paper is to be employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Lamb in the Great Seal Patent Office on the 9th
June 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
LAMB, of the Holborn Paper Mills, Newcastle-under-Lyme, in the County of
Stafford, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Tenth day of December, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said John Lamb, Her special license, that I, the said John
Lamb, my executors, administrators, and assigns, or such others as I, the
said John Lamb, my executors, administrators, and 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, use, exer-
cise, and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE
MANUFACTURE OF TISSUE PAPER FOR TRANSFERRING PATTERNS AND DESIGNS," upon
the condition (amongst others) that I, the said John Lamb, my executors or
administrators, by an instrument in writing under my, or their; or one of their
hands and seals, 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 John Lamb,, do hereby 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, that is to say -
In manufacturing tissue paper for transferring patterns and designs: on
porcelain, or for other purposes, it has heretofore been necessary to apply the
size to the surface of the paper before the impression is printed upon it. Now
my Invention consists in combining the size with the pulp in the ordinary rag

page_text: engines or other machinery employed in preparing the pulp for the paper-
making machines, or in combining the size with the water with which the
pulp is diluted previous to or when supplied to the paper-making machines, or
in sizing the paper in its progress through the paper-making machines.
In performing my Invention I find it most beneficial to apply the size to
the pulp in the rag engine, in the following manner :-When the ropes or
other fibrous materials have been partially pulped I add four or five pounds of
alumina or alum to every one hundred pounds of pulp, and when the alumina
or alum is perfectly dissolved and mixed with the pulp I add twenty pounds
of soap to every one hundred pounds of pulp. For some purposes I have
found it advantageous to add from two to two and a half per cent. of pearlash
and antichlorine to the pulp.
Having thus stated the nature of my Invention, and described a convenient
mode of carrying the same into operation, I wish it to be understood that I do
not limit myself to the details given, nor to the use of the ingredients named,
as other substances possessing the same or similar properties may be used, and
the proportions may also be varied according to the peculiar purpose for which
the tissue paper is to be employed.
In witness whereof, I, the said John Lamb, have hereto set my hand
and seal, the Sixth day of June, in the year of our Lord One thousand
eight hunded and sixty-three.
JOHN LAMB. (L.S.)