Improvements in the Manufacture of Artificial Stone.
Year: 1891

page_text: Date of Application, 19th May, 1891
Complete Specification Left. 19th Feb., 1892-Accepted, 19th Mar, 1892
PROVISIONAL SPECIFICATION.
[Communicated from abroad by WILHELM SCHLEUNING, of Heidelberg, in the
German Empire, Chemist.]
Improvements in the Manufacture of Artificial Stone.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents, do hereby declare the
nature of this invention to be as follows:-
In the Specification to Patent No. 6433 of 1889 was described a manufacture of
material for building purposes in which soda residues that have been subject to the
action of atmospheric air were used.
In the practical carrying out of the manufacture described in the said Specifica-
tion, in particular for the production of artificial stone, it has been found that the
soda residues of the Leblanc soda process give particularly good results in this
respect if they are not only previously subjected to the decomposing action of the
atmosphere but are also lixiviated, whereby they are freed from a great portion.of
their sulphur.
Consequently there may of course be used with great advantage for the purposes
of this manufacture the soda residues resulting from the sulphur regeneration
process of the Leblanc soda manufacture.
For this purpose the soda residues decomposed by the atmosphere, or those
resulting from the sulphur regeneration process, are mixed with water and gypsum,
or in place hereof may be used any other mortar or cement of a hydraulic nature,
and the damp mixture is then moulded-to-any-desired-configuration by strong
hydraulic or mechanical pressure, such blocks being then allowed to dry and harden
in the air.
In this case the use of finely pulverised burnt pyrites may be dispensed with.
If however it is not certain that the soda residues have been sufficiently
decomposed or oxidized by the atmosphere, a small quantity, such as from th
to th of the entire mass, of finely pulverised pyrites may be added.
Dated this 19th day of May 1891
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Artificial Stone.
I, OLIVER IMRAY of No. 28 Southampton Buildings, Chancery Lane, in the
County of London, Fellow of the Institute of Patent Agents do hereby declare
the nature of this invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement:-
In the Specification to Patent No. 6433 of 1889 was described a manufacture of
material for building purposes in which soda residues that have been subject to the
action of atmospheric air were used.
In the practical carrying out of the manufacture described in the said Specifica-
tion, in particular for the production of artificial stone, it has been found that the
soda residues of the Leblanc soda process give particularly good results in this
respect if they are not only previously subjected to the decomposing action of the
atmosphere but are also lixiviated, whereby they are freed from a great portion of
their sulphur.
Consequently there may of course be used with great advantage for the purposes

page_text: of this manufacture the soda residues resulting from the sulphur regeneration
process of the Leblanc soda manufacture.
For this purpose the soda residues decomposed by the atmosphere, or those
resulting from the sulphur regeneration process, are mixed with water and gypsum,
or in place hereof may be used any other mortar or cement of a hydraulic nature,
or, with the residues from Chances desulphurising process, there may be advan-
tageously used an addition of powdered clay and slaked lime, and the damp mixture
is then moulded to any desired configuration by strong hydraulic or mechanical
pressure, such blocks being then allowed to dry and harden in the air.
In this case the use of finely pulverised burnt pyrites may be dispensed with.
If however it is not certain that the soda residues have been sufficiently
decomposed or oxidized by the atmosphere, a small quantity, such as from th
to th of the entire mass, of finely pulverised pyrites may be added.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
:-
In the manufacture of material for building purposes of the kind herein referred
to, the use either of the soda residues of the Leblanc soda process after they have
been subjected to the action of the atmosphere and lixiviated, or of the soda residues
resulting from the sulphur regeneration process of the Leblanc soda process, or
with the residues from Chances desulphurising process, such residues being mixed
with water and gypsum or with other mortar or cement of a hydraulic nature with
or without an addition of clay and slaked lime, and of burnt pyrites substantially as
set forth.
Dated this 18th day of February 1802
ABEL & IMRAY,
Agents for the Applicant.