THE MANUFACTURE OF A NEW MATERIAL TO BE EMPLOYED FOR MAKING CHIMNEY PIECES, AND FOR OTHER PURPOSES."
Year: 1880

page_text: LETTERS PATENT to John Henry Corke, of Bradford House, Somers Road,
Southsea, in the County of Hants, Plasterer, for an Invention of "THE
MANUFACTURE OF A NEW MATERIAL TO BE EMPLOYED FOR MAKING
CHIMNEY PIECES, AND FOR OTHER PURPOSES."
PROVISIONAL SPECIFICATION left by the said John Henry Corke at the
Office of the Commissioners of Patents on the 31st December 1880.
JOHN HENRY CORKE, of Bradford House, Somers Road, Southsea, in the
County of Hants, Plasterer. "THE MANUFACTURE OF A NEW MATERIAL TO
BE EMPLOYED FOR MAKING CHIMNEY PIECES, AND FOR OTHER PURPOSES."
This Invention consists in the manufacture of a new material possessing extreme
bardness and durability, and which is consequently suitable for the manufacture
of chimney pièces, trusses, " capitols," arches, and for any kind of plastic decoration
to be used in buildings.
For the purpose of manufacturing the said material I take six pounds of sulphate
of iron, four pounds of sulphate of alumina, and three and a half pounds of log-
wood, and place the whole, together with eighteen gallons of clear water, in a
large boiler where they are kept at a boiling heat for about two hours; the
mixture is then strained through a fine meshed sieve and allowed to cool, and
when cold the said mixture is guaged with Keen cement and then pressed or run
into suitable moulds, and when sufficiently hard, as will be well understood, the
articles so moulded are thoroughly dried by being placed in a chamber or room
heated to a temperature of about 70° Fahrenheit, they are then in a fit condition
for use, and they may be painted or otherwise treated as required.
Although I have, for the purpose of example, herein before referred to the use
of the above mentioned substances in certain quantities, it will be readily understood
that the said relative quantities can be slightly varied without departing from the
principles of this Invention.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, and
of an Order of the Lord Chancellor, filed by the said John Henry Corke in
the Great Seal Patent Office on the 30th July 1881.
JOHN HENRY CORKE, of Bradford House, Somers Road, Southsea, in the
County of Hants, Plasterer. "THE MANUFACTURE OF A NEW MATERIAL TO 5
BE EMPLOYED FOR MAKING CHIMNEY PIECES, AND FOR OTHER PURPOSES."
My said Invention consists in the manufacture of a new material possessing
extreme hardness and durability, and which is consequently suitable for the
manufacture of chimney pieces, trusses, capitols," arches, and for any kind of
plastic decoration to be used in buildings.
"
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For the purpose of manufacturing the said material I take six pounds of
sulphate of iron, four pounds of sulphate of aluminia, and three and a half pounds
of log-wood, and place the whole, together with eighteen gallons of clear water, in
a large boiler where they are kept at a boiling heat for about two hours; the
mixture is then strained through a fine meshed sieve and allowed to cool, and 1
when cold the said mixture is guaged with Keen or Martin's cement and then
pressed or run into suitable moulds, and when sufficiently hard, as will be well
understood, the articles so moulded are thoroughly dried by being placed in a
chamber or room heated to a temperature of about. 90° Fabrenheit, they are
then in a fit condition for use, and they may be painted or otherwise treated as
required.
Although I have, for the purpose of example, herein before referred to the use of
the above mentioned substances in certain quantities, it will be readily understood
that the said relative quantities can be slightly varied without departing from the
principles of this Invention.
Having thus described and ascertained the nature of my said Invention, and
the manner in which it is to be performed, I would observe in conclusion that
what I consider novel and original, and therefore claim as constituting the Invention
secured to me by the said hereinbefore in part recited Letters Patent is,-
The manufacture of a new material, substantially as and for the purposes
herein before described and set forth.
In witness whereof, I, the said John Henry Corke, have hereunto set my
hand and seal, this Thirtieth day of June, in the year of our Lord One
thousand eight hundred and eighty one.
JOHN HENRY CORKE (15.)
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