IMPROVEMENTS IN DYEING COTTON OR OTHER VEGETABLE FIBROUS SUBSTANCES."
Year: 1863

page_text: LETTERS PATENT to Henry Haigh and Richard Heaton, of Milnsbridge,
near Huddersfield, in the County of York, Dyers, for the Invention
of "IMPROVEMENTS IN DYEING COTTON OR OTHER VEGETABLE FIBROUS
SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Henry. Haigh and Richard
Heaton at the Office of the Commissioners of Patents, with their Petition,
on the 29th September 1863.
We, HENRY HAIGH and RICHARD HEATON, of Milnsbridge, near Hud-
dersfield, in the County of York, Dyers, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN DYEING COTTON OR OTHER VEGETABLE
FIBROUS SUBSTANCES," to be as follows:-
This Invention relates to the dyeing of cotton or other vegetable fibrous
substances brown, or what is commonly called "catechu brown," and our
improvements consist in dispensing with the "bichrome" or bichromate of
potash which has heretofore been employed in the after or fixing process of
such dyeing, and instead of which we use a solution of lime or other alkaline
solutions. By this means we effect a saving in the costs of dye wares, and the
cotton or other fibrous substances are rendered more soft and free from dust;
or better adapted for the manufacturing processes.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Haigh and Richard Heaton in the Great Seal Patent
Office on the 28th March 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, HENRY
HAIGH and RICHARD HEATON, of Milnsbridge, near Huddersfield, in the
County of York, Dyers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by. Her Letters
Patent, bearing date the Twenty-ninth day of September, in the year of our
Lord One thousand eight hundred and sixty-three, in the twenty-seventh year
of Her reign, did for Herself, Her heirs and successors, give and grant unto
us, the said Henry Haigh and Richard Heaton, Her special licence that we,
the said Henry Haigh and Richard Heaton, our executors, administrators,
and assigns, or such others as we, the said Henry Haigh and Richard
Heaton, our 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
DYEING COTTON OR OTHER VEGETABLE FIBROUS SUBSTANCES," upon the condition
(amongst others) that we, the said Henry Haigh and Richard Heaton,
our executors or administrators, by an instrument in writing under our, or
their, or one of our or 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 we, the said Henry Haigh and Richard Heaton,
do hereby declare the nature of our 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 relates to the dyeing of cotton or other vegetable fibrous
substances brown, or what is commonly called "catechu brown," and our
improvements consist in dispensing with the "bichrome" or bichromate of
.potash, which, has heretofore been employed in the after or fixing process of
such dyeing, and instead of which we use a solution of lime or other alkaline
solutions. By this means we effect a saving in the costs of dye wares, and
the cotton or other fibrous substances are rendered more soft and free from
dust, or better adapted for the manufacturing processes.

page_text: In order that our said Invention may be clearly understood, we will describe
the manner of performing the same, or the processes we adopt in carrying the
Invention into practice.
After the fibrous substances have been subjected to the action of a strong
decoction of catechu, whether in a hot or cold state, we then place the same
in a bath of lime water or a solution of lime, which produces a good shade of
brown. Other alkaline solutions will answer this purpose, but lime being the
cheapest and best for the purpose, we prefer to adopt it. If the shade is
required to be darker or sadder then we subject them to a bath or a decoction
of logwood, peachwood, fustic, or other coloring matters, or combinations
thereof, according to the particular shade of brown required to be given to the
said substances.
Having thus fully described the nature of the said Invention, and the
manner in which the same is performed or put into practical operation, we
would have it understood that we do not confine ourselves to the particular
mode or process or processes which we have herein described; but what we
claim as of our Invention is, the use of a solution of lime or other alkaline
solutions instead of bichrome or bichromate of potash in the process of dyeing
cotton or other vegetable fibrous substances catechu brown.
In witness whereof, I, the said Henry Haigh, for and on behalf of
myself and the said Richard Heaton, have hereunto set my hand and
seal, this Twenty-sixth day of March, One thousand eight hundred
and sixty-four.
Signed, sealed, and delivered by the
within-named Henry Haigh in the
presence of
WM. TASKER,
Patent Agent,
Halifax.
HENRY HAIGH. (L.S.)