IMPROVEMENTS IN INDURATING ARTIFICIAL STONE AND THE LIKE
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said James William Butler at the
Office of the Commissioners of Patents on the 7th December 1882.
JAMES WILLIAM BUTLER of Blackheath in the, County of Kent "IMPROVEMENTS
IN INDURATING ARTIFICIAL STONE AND THE LIKE"
..
My Invention has for its object to effect the induration or hardening of artificial
stone and the like in an effectual and rapid manner. According to my said
Invention I subject the material to be treated to the action of the fumes of carbonic
acid gas and vapours of sulphur together with steam or watery vapour. This may
be conveniently effected by providing a tight vessel for containing the material to
be treated into which opens a pipe or passage leading from a charcoal fire which
may be used to heat a boiler at the side of which is a chamber or vessel containing
sulphur The said boiler and the said vessel are respectively in communication
with the said pipe or passage from the charcoal fire. When the fire is lighted the
gases therefrom together with the steam from the boiler and the fumes from the
sulphur chamber all pass into the chamber containing the material to be treated
and by their joint action effect the induration thereof-In place of charcoal, coke
or other form of carbon may be used

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James William Butler in the Great Seal Patent Office on the
4th June 1883.
"
JAMES WILLIAM BUTLER of Blackheath in the County of Kent IMPROVEMENTS
IN INDURATING ARTIFICIAL STONE AND THE LIKE'
>>.
My Invention has for its object to effect the induration or bardening.of artificial
stone and the like in an effectual and rapid manner-According to my said.
Invention I subject the material to be treated to the action of the fumes of car-
bonic acid and vapours of sulphur together with steam or watery vapour-My
Invention may be conveniently carried into effect by providing a tight vessel or
chamber for containing the material to be treated into which opens a pipé or
passage leading from a charcoal or coke fire which may be used to heat a boiler
at the side of which is a chamber or vessel containing sulphur--The said boiler
and the said vessel are respectively in communication with the said pipe or
passage from the charcoal fire-When the fire is. lighted, the gases therefrom
together with the steam, from the boiler and the fumes from the sulphur chamber
all pass into the chamber containing the material to be treated and by, their joint
action effect the induration thereof-In place of charcoal or coke other form of
carbon may be used.
Having now described. and particularly ascertained the nature of my said
Invention and the manner in which the same is or may be used or carried intō
effect I would observe in conclusion that what I consider to be novel and original-
and therefore claim as the Invention secured to me by the hereinbefore in part
recited Letters Patent is.
Indurating artificial stone. or the like by subjecting it to treatment as herein-
before described.
"
In witness whereof I the said James William Butler have to this my
Specification set my hand and seal this fourth day of May One thousand
eight hundred and eighty three