IMPROVEMENTS IN GALVANIC BATTERIES, OBTAINING CHEMICAL PRODUCTS THEREFROM
Year: 1852

page_text: LETTERS PATENT to Martyn John Roberts, of Woodbank,
Gerrard's Cross, in the County of Bucks, Gentleman, for the
Invention of "IMPROVEMENTS IN GALVANIC BATTERIES,
OBTAINING CHEMICAL PRODUCTS THEREFROM."
IN
Sealed the 19th March 1853, and dated the 13th October 1852.
PROVISIONAL SPECIFICATION left by the said Martyn John
Roberts at the Office of the Commissioners of Patents, with his
Petition, on the 13th October 1852.
I, MARTYN JOHN ROBERTS, of Woodbank, Gerrard's Cross, in the
County of Bucks, Gentleman, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN GALVANIC BATTERIES, AND IN OBTAINING
CHEMICAL PRODUCTS THEREFROM," to be as follows:-
My Invention consists in the use of antimony or bismuth as a positive
plate in a galvanic battery associated with platinum or other substance
electro negative to antimony or bismuth, and exciting this combination
by nitric or other acids, by which means I obtain chemical products,
such as oxide of antimony, which may be used as a paint, or an oxide or
salt of bismuth, some of which produce a white pigment.

page_text: 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 13th April 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
MARTYN JOHN ROBERTS, of Woodbank, Gerrard's Cross, in the County
of Bucks, Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of October, in the year
of our Lord One thousand eight hundred and fifty-two, in the six-
teenth 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, administrators, and
assigns, or such others as I, the said Martyn John Roberts, my execu-
tors, 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 "IMPROVE-
MENTS IN GALVANIC BATTERIES, AND IN OBTAINING CHEMICAL PRODUCTS
THEREFROM," 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 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 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: .
My first improvement consists in employing antimony as the positive
plate in a galvanic pair or series in combination with platinum or some
other substance electro negative thereto as the negative plate, and I
excite this pair to action by nitric or other acid. In order to obtain a

page_text: chemical product from such a galvanic pair I excite them by nitric acid,
when oxide of antimony will be produced, which may be used as a
paint, and may be applied to other useful purposes.
My second improvement consists in the employment of bismuth as the
positive plate in a galvanic pair or series in combination with platinum
or some other substance electro negative thereto as the negative plate,
and I excite them to action by nitric or other acid. When excited by
nitric acid I obtain oxide of bismuth, which may be used as a paint, and
may be applied to other useful purposes.
And having now described the nature of my said Invention, and in
what manner the same is to be performed, I declare that I claim-
The employment of antimony and bismuth as positive plates in a
galvanic pair or series in combination with plates electro negative
thereto. And I claim the obtaining of oxide of antimony and oxide of
bismuth by the means herein-before described.
In witness whereof, I, the said Martyn John Roberts, have here-
unto set my hand and seal, this Thirteenth day of April, One
thousand eight hundred and fifty-three.
MARTYN J. ROBERTS. (L.S.)