Ix- PROVEMENTS IN COMBINING MATERIALS FOR CLEANSING OR WHITENING STONE
Year: 1853

page_text: LETTERS PATENT to Frederick Simpson, of Red Hill, in the
County of Surrey, Cement Merchant, for the Invention of " Ix-
PROVEMENTS IN COMBINING MATERIALS FOR CLEANSING OR WHITENING
STONE."
Sealed the 23rd March 1853, and dated the 25th January 1853.
PROVISIONAL SPECIFICATION left by the said Frederick Simpson
at the Office of the Commissioners of Patents, with his Petition,
on the 25th January 1853.
I, FREDERICK SIMPSON, of Red Hill, in the County of Surrey,
Cement Merchant, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN COMBINING MATERIALS FOR CLEANSING OR
WHITENING STONE" to be as follows: -
The Invention consists of reducing the stone commonly called
hearth stone into powder, and combining therewith fullers earth and
carbonate of lime.

page_text: SPECIFICATION in pursuance of the conditions of the Letters
Patent, filed by the said Frederick Simpson in the Great Seal
Patent Office on the 18th July 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
FREDERICK SIMPSON, of Red Hill, in the County of Surrey, Cement
Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of January, in
he 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 Frederick Simpson,
Her special licence that I, the said Frederick Simpson, my exe-
cutors, administrators, and assigns, or such others as I, the said
Frederick Simpson, 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 "IMPROVEMENTS IN COM-
BINING MATERIALS FOR CLEANSING OR WHITENING STONE," upon the con-
dition (amongst others) that I, the said Frederick Simpson, by
an instrument in writing under my hand and scal, should par-
ticularly 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 Frederick Simpson, 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 Invention consists of reducing the stone commonly called
hearth stone into powder, and combining therewith fullers earth and

page_text: carbonate of lime. And in order that my said Invention may be most
fully understood, and readily carried into effect, I will proceed to
describe the means pursued by me.
I take hearth stone, fullers earth, and carbonate of lime in a dry
state, and reduce them to powder, either separately or together. I
prefer, however, to grind them separately, and then together, and
to sift them, and although the proportions may be varied, I prefer
to combine these matters in the following proportions: -10 parts
of hearth stone; 30 parts of fullers earth; 60 parts of carbonate of
lime. These ingredients being thus intimately mixed are in the
state ready for use with water in place of hearth stone.
In witness whereof, I, the said Frederick Simpson, have here-
unto set my hand and seal, this Fourteenth day of July,
in the year of our Lord One thousand eight hundred and
fifty-three.
FREDERICK SIMPSON: (L.S.)
Witness,
BERTHA SIMPSON,
Mill Street,
Red Hill,
Surry.