A CHEMICAL COMPOSITION OR AGENT TO BE EMPLOYED IN THE DYEING OF WOOLS AND WOOLLENS
Year: 1856

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street, in
the City of London, Patent Agent, for the Invention of "A CHEMICAL
COMPOSITION OR AGENT TO BE EMPLOYED IN THE DYEING OF WOOLS AND
WOOLLENS." A communication from Marc Lipman.
Sealed tho 19th May 1857, and dated the 2nd December 1856.
PROVISIONAL SPECIFICATION left by the said Richard Archibald Brooman
at the Offico of the Commissioners of Patents, with his Petition, on the
2nd December 1856..
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention
for "A CHEMICAL COMPOSITION OR AGENT TO BE EMPLOYED IN THE DYEING OF
WOOLS AND WOOLENS" (communicated to me by Marc Lipman, a foreigner
residing abroad), to be as follows:-
I first prepare stannic chloride (chlorure stannique) by mixing in or about
the following proportions:-14 ounce of bay salt or sea salt, 8 lbs. muriatic
acid, 2 lbs. nitric acid, and by dissolving tin in the liquid thus obtained,
adding the metal a little at a time, in order that the solution may proceed
slowly, and continue for at least a day.
I then manufacture the agent to be used in dyeing by dissolving 6 lbs.
oxalic acid in about 66 lbs. hot water and about 6 lbs. stannic chloride in about
66 lbs. cold water. I stir for about a quarter of an hour, then add about

page_text: 13 lbs. of sulphuric acid, stir again for about a quarter of an hour, and when
the two solutions are quite cold I mix them together, and leave them to settle
for about 24 hours before using.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent Office
on the 1st June 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, Patent
Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of December, in the year of our Lord
One thousand eight hundred and fifty-six, in the twentieth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Richard Archibald Brooman, Her special licence that I, the said Richard
Archibald Brooman, my executors, administrators, and assigns, or such others
as I, the said Richard Archibald Brooman, 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 Invention
for "A CHEMICAL COMPOSITION OR AGENT TO BE EMPLOYED IN THE DYEING OF WOOLS
AND WOOLENS" (communicated to me by Marc Lipman, a foreigner residing
abroad), upon the condition (amongst others) that I, the said Richard
Archibald Brooman, 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 Richard Archibald Brooman, 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 thereof, that is to say :-
This composition is intended to be used in dyeing wools and woolens as a
substitute for tartaric acid, cream of tartar, and argol.
I first prepare stannic chloride (chlorure stannique) by mixing in or about

page_text: the following proportions:-1 ounces of bay salt or sea salt, 8 lbs. muriatic
acid, 2 lbs. nitric acid, and by dissolving tin in the liquid thus obtained,
adding the metal a little at a time, in order that the solution may proceed
slowly, and continue for at least a day.
I then manufacture the composition or agent to be used in dyeing by first
dissolving one part (say, about six pounds and a half) of oxalic acid in ten parts
(say, about sixty-six pounds) of hot water, and stir for half an hour. I next
dissolve one part (say, about six pounds and a half) of the stannic chloride,
prepared as above described in ten' parts (say, about sixty-six pounds) of cold
water, and stir for a quarter of an hour, then add for every one part of the
stannic chloride two parts (say, about thirteen pounds) of sulphuric acid; stir
again for about a quarter of an hour, and when the two solutions are cold, or
nearly so, I mix them together, stir for about half an hour, and leave them to
settle for about twenty-four hours before using.
The chemical composition, which is called "composition of tartar," may be
used in dyeing all colors in wools and woolons. Equal parts of the composition
of tartar may be used in lieu of about equal parts of tartaric acid; seven
parts of the composition of tartar in lieu of about ten parts of cream of tartar
or argol.
And having now described the nature of tho said Invention, and in what
manner the same is to be performed, I declaro that I claim the manufacturo
in the manner herein-beforo described of the chemical composition or "com-
position of tartar" to be employed in the dyeing of wools and woolens.
In witness whereof, I, the said Richard Archibald Brooman, have here-
unto set my hand and seal, this First day of June, Ono thousand
eight hundred and fifty-seven.
R. A. BROOMAN. (L.s.)