AN IMPROVED AZURE BLUE FOR DOMESTIC PURPOSES."
Year: 1857

page_text: LETTERS PATENT to Charles Bruton, senior, Charles Bruton, junior,
Francis James Bruton, and Samuel Rogers Bruton, of the City of Man-
chester, in the County of Lancaster, Ink Manufacturers and Stationers,
for the Invention of "AN IMPROVED AZURE BLUE FOR DOMESTIC PURPOSES."
PROVISIONAL SPECIFICATION left by tho said Charles Bruton, senior,
Charles Bruton, junior, Francis James Bruton, and Samuel Rogers
Bruton, at the Office of the Commissioners of Patents, with their
Petition, on the 26th February 1857.
WC, CHARLES BRUTON, senior, CHARLES BRUTON, junior, FRANCIS JAMES
BRUTON, and SAMUEL ROGERS BRUTON, of the City of Manchester, in tho
County of Lancaster, Ink Manufacturers and Stationers, do hereby declarg the
nature of the said Invention for "AN IMPROVED AZURE BLUE FOR DOMESTIC
PURPOSES," to be as follows:-
We mix in any proportions that may be found most desirable oxalic
acid and Prussian or Chinese blue, to bo sold either in a state of powder or
liquid.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Charles Bruton, senior, Charles Bruton, junior, Francis James
Bruton, and Samuel Rogers Bruton, in the Great Seal Patent Office on
the 25th August 1857.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we; CHARLES
BRUTON, Sen', CHARLES BRUTON, jun', FRANCIS JAMES BRUTON, and SAMUEL
ROGERS BRUTON, of the City of Manchester, in the County of Lancaster,
Ink Manufacturers and Stationers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-sixth day of February, in the year of our
Lord One thousand eight hundred and fifty-seven, in the twentieth year of
Her reign, did, for Herself, Her heirs and successors, givo and grant unto
us, the said Charles Bruton, sen", Charles Bruton, jun', Francis James
Bruton, and Samuel Kogers Bruton, Her special license that we;, the
said Charles Bruton, sen', Charles Bruton, jun', Francis James Bruton, and
such
Samuel Rogers Bruton, our executors, administrators, and assigns, or
others as we, the said Charles Bruton, son, Charlos Bruton, jun', Francis
James Bruton, and Samuel Rogers Bruton, 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 AN IMPROVED AZURE BLUE FOR DOMESTIC PURPOSES," upon the
condition (amongst others) that we, the said Charles Bruton, sen, Charles
Bruton, jun, Francis James Bruton, and Samuel Rogers Bruton, by an
instrument in writing under our hands and seals, or the hand and seal
of one of us, should particularly describo and ascertain the nature of the
said Invention, and in what manner the samo was to be performed, and
cause the same to be filed in the Great Scal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said Charles Bruton, jun', for and on behalf
of myself and the said Charles Bruton, sen*, Francis James Bruton, and
Samuel Rogers Bruton, do hereby declare the naturo of the said Invention,
and in what manner the same is to be performed, to be particularly described s
and ascertained in and by the following statement (that is to say): :-
We mix oxalic acid with Prussian or Chinese bluc, in about equal quanti-
tics if the Prussian or Chinese blue is of a good quality, but if of inferior

page_text: quality we add an additional quantity of oxalic acid in proportion to the
quality of the said blue. To every four parts of this mixture we add about
one part of water, which we heat or boil for a short time, and when cold, dry
it in the atmosphere or by artificial means, and then pulverise it ready for
sale as a powder; or we diluto it with water, and sell it in a liquid state.
The said mixture or composition is applicable to washing linen, cotton, or
mixtures thereof, in the piece, or for washing wearing apparel and other
domestic purposes, and is used or.applied in the washing processes in the same
manner as the ordinary blue, has been hitherto used for the same or similar
<!
purposes.
Having thus fully described the nature of our said Invention, and the
manner in which the same is to be performed, we desire it to be distinctly
understood that we do not confine ourselves to any precise proportions of. the
said matters or ingredients, as such must be varied according to the qualities
thereof; but we claim as our Invention or discovery, the mixture of oxalic
acid with Prussian or Chinese blue, as and for the purposes herein described
and set forth.
"In witness whereof, I, the said Charles Bruton, jun', for and on behalf of
myself and the said Charles Bruton sen', Francis James Bruton, and
Samuel Rogers Bruton, have hereunto set my hand and seal, this
Twenty-fourth day of August, in the year of our Lord One thousand
eight hundred and fifty-seven.
CHARLES BRUTON, JNR. (LS.)
Signed, sealed, and delivered by the within-
named Charles Bruton, jun', in the
presence of
E. J. Hoones, Patent Agent,
Manchester.