IMPROVEMENTS IN THE MANUFACTURE OF METALLIC AND EARTHY SILICATES, OR SILICEOUS COM- POUNDS OF THE SAME, FROM THE METALLIC AND EARTHY BASES OR THEIR SALTS, AND SOLUBLE ALKALINE SILICATES, THE FORMATION OF ALKALINE ACETATES OR CAUSTIC ALKALIES, AND APPLICATION OF THE SAME
Year: 1861

page_text: LETTERS PATENT to Thomas Cobley, of Meerholz. in the Electorate of
Hesse, Germany, Metallurgist, for the Invention of "IMPROVEMENTS IN
THE MANUFACTURE OF METALLIC AND EARTHY SILICATES, OR SILICEOUS COM-
POUNDS OF THE SAME, FROM THE METALLIC AND EARTHY BASES OR THEIR SALTS,
AND SOLUBLE ALKALINE SILICATES, THE FORMATION OF ALKALINE ACETATES OR
CAUSTIC ALKALIES, AND APPLICATION OF THE SAME."
Sealed the 11th January 1862, and dated the 15th July 1861.
PROVISIONAL SPECIFICATION left by the said Thomas Cobley at the
Office of the Commissioners of Patents, with his Petition, on the 15th
July 1861.
I, THOMAS COBLEY, of Meerholz, in the Electorate of Hesse, Germany,
"IM.
Metallurgist, do hereby declare the nature of the said Invention for
PROVEMENTS IN THE MANUFACTURE OF METALLIC AND EARTHY SILICATES, OR SILICEOUS
COMPOUNDS OF THE SAME, FROM THE METALLIC AND EARTHY BASES OR THEIR SALTS,
AND SOLUBLE ALKALINE SILICATES, THE FORMATION OF ALKALINE ACETATES OR
CAUSTIC ALKALIES, AND APPLICATION OF THE SAME," to be as follows:-
My Invention consists in forming silicates of lead, zinc, copper, baryta,
or any other base silicifiable by treatment with soluble alkaline silicates
in the following manner;-I take a solution of the base to be treated,
preferring an acetic or muriatic solution of the same, and bring it into
a concentrated solution of the soluble alkaline silicates, whereupon decom-
position takes place, and the insoluble silicate precipitates itself; the

page_text: acetic or muriatic solution resulting may be economised for various pur-
poses, and the precipitate collected, washed, and dried; or I treat the oxides
or carbonates of the metals, or the hydrated or caustic earths with a
solution of the alkaline silicates, so as to form an insoluble precipitate, which
is collected, and the caustic alkaline solution evaporated down and applied in
its caustic state to glass or soap making, or treated with carbonic acid gas to
form carbonates. The silicate of lead I propose to employ as a pigment or in
glass making or glazing. The silicates of zinc and baryta in combination with
each other I employ as a substitute for lead and other purposes in glass making
and glazing, enamelling, and as pigments, silicate of copper as a pigment, and
for producing a coloured glaze or enamel upon surfaces and in combination
with other substances for the manufacture of coloured vitrified ware.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Thomas Cobley in the Great Seal Patent Office on the 15th
January 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
COBLEY, of Meerholz, Electorate of Hesse, Germany, Metallurgist, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of July, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Thomas Cobley, Her special licence, that I, the said Thomas Cobley, my
executors, administrators, and assigns, or such others as I, the said Thomas
Cobley, 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 THE MANU-
FACTURE OF METALLIC OR EARTHY SILICATES, OR SILICEOUS COMPOUNDS OF THE SAME,
FROM THE METALLIC AND EARTHY BASES OR THEIR SALTS, AND SOLUBLE ALKALINE
SILICATES, THE FORMATION OF ALKALINE ACETATES OR CAUSTIC ALKALIES, AND APPLI
CATION OF THE SAME," upon the condition (amongst others) that I, the said
Thomas Cobley, my executors or administrators, 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

page_text: 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 Thomas Cobley, 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,
that is to say
My Invention consists in forming silicates of lead, zinc, copper, baryta, or
any other base silicifiable by treatment with soluble alkaline silicates, in the
following manner, that is to say--I take a solution of the base to be treated,
preferring an acetic or muriatic solution of the same, and bring it into any con-
centrated solution of the soluble alkaline silicates, whereupon decomposition
takes place and the insoluble silicate is precipitated; the acetic or muriatic
solution resulting may be economized for various purposes, and the precipitate
collected, washed, and dried well; or I treat the oxides or carbonates of the
metals or the hydrated or caustic earths with a solution of the alkaline sili-
cates, so as to form an insoluble precipitate, which is collected, and the caustic
alkaline solution evaporated down, and may be applied in its caustic state to
glass or soap making, or treated with carbonic acid gas to form carbonates.
The silicate of lead I propose to employ as a pigment, or in glass making,
as a glaze or enamel; the silicates of zinc and baryta in combination with each
other I employ as a substitute for lead and other purposes in glass making
and glazing, or as an enamel and as pigments, silicates of copper as a pigment,
and for producing a coloured glaze or enamel upon surfaces and in combination
with other substances for the manufacture of coloured vitrified ware.
In witness whereof, I, the said Thomas Cobley, have hereunto set my
hand and seal, this Fifteenth day of January, One thousand eight
hundred and sixty-two.
TH. COBLEY. (L.S.)