IMPROVEMENTS IN THE MANUFACTURE OF MORDANTS OR DYEING MATERIALS, WHICH ARE IN PART APPLICABLE TO THE MANUFACTURE OF A POLISHING POWDER
Year: 1853

page_text: LETTERS PATENT to Martyn John Roberts, of Woodbank, Gerards
Cross, in the County of Bucks, Gentleman, for the Invention of
"IMPROVEMENTS IN THE MANUFACTURE OF MORDANTS OR DYEING
MATERIALS, WHICH ARE IN PART APPLICABLE TO THE MANUFACTURE OF
A POLISHING POWDER."
Sealed the 2d August 1853, and dated the 28th February 1853.
PROVISIONAL SPECIFICATION left by the said Martyn John
Roberts at the Office of the Commissioners of Patents, with his
Petition, on the 28th February 1853.
I, MARTYN JOHN ROBERTS, of Woodbank, Gerards Cross, in the
5 County of Bucks, Gentleman, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE MANUFACTURE OF MORDANTS OR
DYEING MATERIALS, WHICH ARE IN PART APPLICABLE TO THE MANUFACTURE OF
▲ POLISHING POWDER," to be as follows:-

page_text: I take antimony, and render it soluble in any form; precipitate it or
its oxide upon the fabric to be dyed, as is usual with mordants. I
sometimes also use it in solution as a "brightener" of colours. And I
manufacture my polishing powder for glass and other hard surfaces
from antimony in the form of oxide, which may be calcined to the
requisite hardness. I also improve the manufacture of tin or antimony
mordants or dyeing materials when in the form of stannates or anti-
moniates, and when rendered soluble by soda, in the following manner:
I mix the metal or its oxide with chloride of sodium, called common
salt, and lime, alumina, or other body which will tend to extract
the chlorine from the soda, and I heat them together, applying vapour,
or other combination of hydrogen and oxygen, to the mixture when
so heated.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Martyn John Roberts, in the Great Seal Patent
Office, on the 26th August 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
MARTYN JOHN ROBERTS, of Woodbank, Gerards Cross, in the County of
Bucks, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of February, in
the year of our Lord One thousand eight hundred and fifty-three, in the
sixteenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Martyn John Roberts, Her special
licence that I, the said Martyn John Roberts, my executors, adminis-
trators, and assigns, or such others as I, the said Martyn John Roberts,
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

page_text: Ireland, the Channel Islands, and Isle of Man, an Invention for "Im-
PROVEMENTS IN THE MANUFACTURE OF MORDANTS, OR DYEING MATERIALS,
WHICH ARE IN PART APPLICABLE TO THE MANUFACTURE OF A POLISHING
POWDER," upon the condition (amongst others) that I, the said Martyn
John Roberts, by an instrument in writing under my hand and seal,
should particularly describe and ascertain the nature of the said Inven-
tion, 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 Martyn John Roberts, 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 thereof, that is to say:
I take antimony, and render it soluble in any form; precipitate it or
its oxide upon the fabric to be dyed, as is usual with mordants. I
sometimes also use it in solution as a "brightener" of colours.
And I manufacture my polishing powder, for glass and other hard
surfaces, from autimony in the form of oxide, which may be calcined to
the requisite hardness.
I also improve the manufacture of tin or antimony mordants, or
dyeing materials, when in the form of stannates, or antimoniates, or
antimoniites, and when rendered soluble by soda, in the following
manner: I mix the metal or its oxide with chloride of sodium
(common salt) and lime, alumina, or other body which will tend to
extract the chlorine from the soda, and I heat them together, applying
vapour or other combination of hydrogen and oxygen to the mixture
when so heated.
And having now described the nature of my said Invention, and in
what manner the same may be performed, I declare that I claim-
First, the use of antimony in a metallic or other form as a mordant
in dyeing cotton and other fabrics, and also for the purpose of brighten-
ing colours on such fabrics:
Second, the use of the oxide of antimony as a polishing powder

page_text: And, third, the manufacture of stannates and antimoniates or anti-
moniites of soda used in dyeing, in the manner above mentioned.
In witness whereof, I, the said Martyn John Roberts, have here-
unto set my hand and seal, this Twenty-fourth day of August,
One thousand eight hundred and fifty-three.
MARTYN J. ROBERTS. (L.B.)