IMPROVEMENTS IN THE MANUFACTURE OF SOAP
Year: 1863

page_text: LETTERS PATENT to Sanders Trotman, of No. 11, Albert Street, Camden
Town, in the County of Middlesex, Engineer, for the Invention of
"IMPROVEMENTS IN THE MANUFACTURE OF SOAP."
PROVISIONAL SPECIFICATION left by the said Sanders Trotman at
the Office of the Commissioners of Patents, with his Petition, on the
2nd December 1863.
I, SANDERS TROTMAN, of No. 11, Albert Street, Camden Town, in the
County of Middlesex, Engineer, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN THE MANUFACTURE OF SOAP," to be as
follows:-
My Invention consists in the use of bydrated silica, natural or artificial, in
the manufacture of soap instead of the anhydrous silica or solution of silicates
of the alkalies. By the use of my Invention a considerable saving is effected
in the cost of production and a soap of less alkalinity is thereby obtained. The
method I employ in carrying out my Invention is as follows:-
I take the hydrated silica dry, or mixed into a stiff paste, and add the same
to the soap already boiled, the boiling should then be continued for a short
time, when the hydrated silica will combine with the soap, which can then
be drawn off into the frames in the usual manner. The hydrated silica may
also be stirred (dry or in a stiff paste) into the lees or the heated tallow (or
fat) with either of which it will combine readily. Or it may be mixed with

page_text: both the alkali and fat separately previous to their being brought together for
saponification. The natural hydrates of silica containing impurities which are
not present in the artificial hydrate may be used in soaps where depth of color
is not obiectionable.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Sanders Trotman in the Great Seal Patent Office on
the 2nd June 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SANDERS
TROTMAN, of No. 11, Albert Street, Camden Town, in the County of Middlesex,
Engineer, 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 sixty-three, in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Sanders Trotman, Her special licence that I, the said Sanders
Trotman, my executors, administrators, and assigns, or such others as
I, the said Sanders Trotman, 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 Inven-
tion for "IMPROVEMENTS IN THE MANUFACTURE OF SOAP," upon the condition
(amongst others) that I, the said Sanders Trotman, my executors or admi-
nistrators, 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 Sanders Trotman, 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 :-

page_text: My Invention consists in the use of hydrated silica, natural or artificial, in
the manufacture of soap instead of the anhydrous silica or solution of silicates
of the alkalies. By the use of my Invention a considerable saving is effected
in the cost of production and a soap of less alkalinity is thereby obtained.
The method I employ in carrying out my Invention is as follows:-I take
the hydrated silica, dry or mixed into a paste, and add the same to the soap
already boiled, the boiling should then be continued for a short time when the
hydrated silica will combine with the soap, which can then be drawn off into
the frames in the usual manner. The hydrated silica may also be stirred
(dry or in a paste) into the lees or the heated tallow (or fat), with either of
which it will combine readily. Or it may be mixed into both the alkali and
fat separately previous to their being brought together for saponification. I
prefer the method first described. The natural hydrates of silica containing
impurities which are not present in the artificial hydrate may be used in soaps
where depth of color is not objectionable, and are duly prepared by washing to
remove any anhydrous silica or grit that may be present as also to remove
foreign substances of a lighter specific gravity. I would also state that I do
not find an bydrated silica so well suited to my purpose in England as that
found in certain parts of Germany, and which I have been the first to export in
such quantity as to render it available for commercial purposes.
I claim as my Invention the use of hydrated silica, natural or artificial, for
the manufacture of soap or saponaceous compounds.
In witness whereof, I, the said Sanders Trotman, have hereunto set my
hand and seal, this Second day of June, in the year of our Lord One
thousand eight hundred and sixty-four.
Witness,
RICHARD SILVESTER,
13, Warwick Court,
Gray's Inn.
SANDERS TROTMAN. (L.S.)