IMPROVE- MENTS IN THE MANUFACTURE OF PRINTERS' INK
Year: 1864

page_text: LETTERS PATENT to John Rowley, of Grosvenor Terrace, Wells Street,
Camberwell, in the County of Surrey, for the Invention of "IMPROVE-
MENTS IN THE MANUFACTURE OF PRINTERS' INK."
Sealed the 7th February 1865, and dated the 15th November 1864.
PROVISIONAL SPECIFICATION left by the said John Rowley at the
Office of the Commissioners of Patents, with his Petition, on the
15th November 1864..
I, JOHN ROWLEY, of Grosvenor Terrace, Wells Street, Camberwell, in
the County of Surrey, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN THE MANUFACTURE OF PRINTERS' INK," to be as
follows:-
This Invention consists in utilizing one of the products obtained from a
vegetable substance known in commerce as cotton oil or fat in the manufac-
ture of printers' ink; said product is at present' obtained by subjecting the
cotton oil or 'fat to the process of distillation, but I believe said product may
be otherwise obtained. The product above referred to is a black pitchy
substance, which I propose to use in combination with rosin oil or other oils
mixed with other ingredients, such as are now employed in the manufacture of
printers' ink.
The following is an example of the proportions of the ingredients:-I employ
from twenty to seventy-five per cent. of the pitchy substance aforesaid, and

page_text: mix with from twenty-five to eighty per cent. of rosin oil or other oils, and
add to these from ten to twenty-five per cent. of lampblack; the whole may
be mixed together by heat in the usual way of making printers' ink.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Rowley in the Great Seal Patent Office on the
15th May 1865.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
ROWLEY, of Grosvenor Terrace, Well Street, Camberwell, in the County of
Surrey, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of November, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-eighth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Rowley, Her special licence that I, the said John Rowley, my
executors, administrators, and assigns, or such others as I, the said John Rowley,
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, exercise, and vend,
within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN THE MANU-
FACTURE OF PRINTERS' INK," upon the condition (amongst others) that I, the
said John Rowley, 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 Rowley, 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 :-
This Invention consists in utilizing one of the products obtained from a
vegetable substance known in commerce as cotton oil or fat in the manu-
facture of printers' ink; said product is at present obtained by subjecting the
cotton oil or fat to the process of distillation, but I believe said product may
be otherwise obtained. The product above referred to is a black pitchy

page_text: substance, which I propose to use in combination with rosin oil or other oils
mixed with other ingredients, such as are now employed in the manufacture
of printers' ink.
And in order to explain my said Invention as completely as possible, I now
proceed to describe the best means I am acqainted with for carrying same
into practical effect, as follows:-I take from twenty to twenty-five per cent.,
more or less, of the aforesaid pitchy substance, and mix with from twenty-
five to eighty per cent., more or less, of rosin oil or other oils, and add to
these from about ten to twenty-five per cent. of lampblack, and mix the
whole together in the usual way of making printers' ink.
Having now fully described and set forth the nature and object of my said
Invention for improvements in the manufacture of printers' ink, together with
the best means I am acquainted with for carrying the same into practical
effect, I would remark in conclusion that I hereby declare my Invention to
consist in, and I claim, combining the product obtained from cotton oil or fat
with rosin oil or other oils, and with other ingredients, such as are now
employed in the manufacture of printers' ink.
In witness whereof, I, the said John Rowley, have hereunto set my
hand and seal, this Twelfth day of May, in the year of our Lord One
thousand eight hundred and sixty-five.