AN IMPROVED METHOD. OF CONCENTRATING THE COLOURING MATTER OF MADDER, Merm On
Year: 1855

page_text: s
LETTERS PATENT to Edward Joseph Hughes, of the City of Manchester,
in the County of Lancaster, Patent Agent, for the Invention of ""AN
IMPROVED METHOD. OF CONCENTRATING THE COLOURING MATTER OF MADDER,
Merm Onnum Mannan
BULED FOR
"
PROVISIONAL SPECIFICATION left by the said-Edward Joseph Hughes at
the Office of the Commissioners of Patents, with his Petition, on the
29th June 1855.
I, EDWARD JOSEPH HUGHES, of the City of Manchester, in the County of
Lancaster, Patent Agent, do hereby declare the nature of the said Invention
for "AN IMPROVED METHOD. OF CONCENTRATING THE COLOURING MATTER OF MADDER,
MUNJEET, SPENT MADDER, OR ANY PREPARATIONS THEREOF," to be as follows:-
"
I take a fibrous, or,, porous, substance, such as, cotton, wool, sponge, or,
similar materials, and steep it, in amordant, calculated to combine with the
coloring matter of madder, &c. When the said material is thoroughly saturated,
I subject it to the action of the necessary processes to remove the acid, and
thoroughly-precipitate the mordant on the material, as is usually done in
calico printing; I then put the material thus prepared into water along with
the madder or any preparations thereof; I heat the water and leave it a
sufficient, time to allow all the coloring matter to combine with the mordant.

page_text: fixed on the material; after which I expose this dyed material to the action
of a strong acid, such as sulphuric, muriatic, &c., either slightly or much
diluted, for a sufficient length of time to dissolve or decompose the mordant,
and carbonise or dissolve the fibrous or porous material. When this is
accomplished I put it on a filter, and wash and neutralise it until the acid is
removed. The residue is then the concentrated coloring matter I wish to
obtain. Or I take the mordant itself, such as iron or chalk, or any other suit-
able mordant properly chemically prepared for the purpose, which I place in
a heated bath along with the madder or any preparation thereof. I pass the
water which holds the coloring matter in solution through and through these
mordants, until all the coloring matter is combined therewith; I then
expose these dyed or saturated mordants also to the action of a strong acid,
such as muriatic, sulphuric, &c., slightly or much diluted, a sufficient length of
time to dissolve or decompose the mordant, and I then place the whole on a
filter, and wash and neutralise it until all the acid is removed. The residue is
the concentrated coloring matter I wish to obtain.
I claim the method of concentrating the coloring matter of madder,
munjeet, spent madder, or any preparations thereof, as herein described.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Edward Joseph Hughes in the Great Seal Patent Office on
the 28th December 1855.
TO ALL TO WHOM THESE PRESENTS-SHALL COME, I, EDWARD
JOSEPH HUGHES, of the City of. Manchester, in the County of Lancaster,
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Royal
Letters Patent, bearing date the Twenty-ninth day of June, in the year of
our Lord One thousand eight hundred and fifty-five, in the nineteenth year
of Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Edward Joseph Hughes, Her special licence that I, the said
Edward Joseph Hughes, my executors, administrators, and assigns, or such
others as I, the said Edward Joseph Hughes, 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, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an In-

page_text: vention for "AN IMPROVED METHOD OF CONCENTRATING THE COLOURING MATTER
OF MADDER, MUNJEET, SPENT MADDER, OR ANY PREPARATIONS THEREOF," upon
the condition (amongst others) that I, the said Edward Joseph Hughes,
by an instrument in writing 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 Royal Letters Patent.
NOW KNOW YE, that I, the said Edward Joseph Hughes, do hereby
declare the nature of the 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):-
I take a fibrous or porous substance, such as cotton, wool, sponge, or similar
materials, and steep it in a mordant calculated to combine with the coloring
matter of madder, &c. When the said material is thoroughly saturated, I
subject it to the action of the necessary processes to remove the acid, and
thoroughly precipitate the mordant on the material, as is usually done in
calico printing; I then put the material thus prepared into water along with
the madder or any preparations thereof; I heat the water and leave it a
sufficient time to allow all the colouring matter to combine with the mordant
fixed on the material; after which I expose this material to the action of a
strong acid, such as sulphuric, muriatic, &c., either slightly or much diluted,
for a sufficient length of time to dissolve or decompose the mordant, and
carbonise or dissolve the fibrous or porous material. When this is accom-
plished I put it on a filter, and wash and neutralize it until the acid is
removed. The residue is then the concentrated colouring matter I wish to
obtain. Or I take the mordant itself, such as iron, chalk, or any suitable
mordant properly chemically prepared for the purpose, which I place in a
heated bath along with the madder or any preparation thereof. I pass the
water which holds the colouring matter in solution through and through these
mordants until all the colouring matter is combined therewith; I then
expose these dyed or saturated mordants also to the action of a strong acid,
such as muriatic, sulphuric, &c., slightly or much diluted, a sufficient length
of time to dissolve or decompose the mordant, and I then place the whole on
a filter, and wash and neutralize it until all the acid is removed. The residue
is the concentrated colouring matter I wish to obtain.
Having thus fully described the nature and particulars of my said.Inven-
tion, and the manner of carrying the same into practical effect, I desire it
to be distinctly understood that I claim the method of concentrating the

page_text: colouring matter of madder, munjeet, spent madder, or any preparations thereof
as herein described.
In witness whereof, I, the said Edward Joseph Hughes, have here-
unto set my hand and seal, this Twenty-seventh day of December,
"One thousand eight hundred and fifty-five.