Improvements in the Production of Artificial Stone.
Year: 1897

page_text: Date of Application, 23rd Oct., 1897
Complete Specification Left, 3rd Feb., 1898-Accepted, 2nd Apr.,
1898
I, LOUIS BROCKMANN, of 26, Kaiser-Wilhelm Strasse, Berlin, in the Empire
of Germany, do hereby declare the nature of this invention to be as follows:
The present invention consists of improvements in the production of artificial
stone, and according to the same, the stone is produced with a polish thereon, so
that it is no longer necessary to polish the rough surface of the stone, as has been
heretofore the case.
This object is attained by mixing the constituent parts of the artificial stone or
marble, with a certain hereinafter specified solution, which has the property of
imparting to the stone mass, after the same has hardened, a smooth polished
surface.
The production of artificial stone or marble according to the present invention
takes place in the following manner:-
Suitable quantities of pulverised gravel and magnesite are first thoroughly,
mixed and then worked up with a solution of chloride of magnesium, alum, barytes,
waterglass, and magnesite until the mixture has attained the necessary consistency
to be moulded to form the plastic objects or products.
The method of producing the artificial stone or marble is otherwise the same as
hitherto employed, and needs no further description. The ingredients of the
solution may be modified as far as advantageous for various purposes, and if desired
colouring matters may be added according to the class of article to be produced.
In order to attain a perfectly smooth surface on the finished stone it is advan-
tageous to place the mass when in its plastic form, on a surface of perfectly smooth
hard glass metal or the like. In making columns, it is advantageous to employ
cylindrical moulds having perfectly smooth walls, in fact all moulds employed
should have smooth walls free from pores.
T: 09.] lan of Antahan 1807
Improvements in the Production of Artificial Stone.
I, LOUIS BROCKMANN, of 26, Kaiser-Wilhelm Strasse, Berlin, in the Empire
of Germany, Merchant, do hereby declare the nature of this invention and in what
[Price 8d.]

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-
The present invention consists of improvements in the production of artificial
stone and according to the same, the stone is produced with a polish thereon, so
that it is no longer necessary to polish the rough surface of the stone, as has been
heretofore the case.
This object is attained by mixing the constituent parts of the artificial stone or
marble, with a certain hereinafter specified solution has the property of
imparting to the stone mass, after the same has hardened, a smooth polished
surface.
The production of artificial stone or marble according to the present invention
takes place in the following manner :-
Suitable quantities of pulverized gravel and magnesite are first thoroughly
mixed and then worked up with a solution of chloride of magnesium, alum, barytes
waterglass, and magnesite until the mixture has attained the necessary consistency
to be moulded to form the plastic objects or products.
The proportions advantageously employed are as follows: 500 parts by weight.
of gravel, 150 parts of magnesite-as binding medium--3 parts of barytes and
5 parts of a suitable colouring medium, the whole to be worked up with a solution
of 65 parts of chloride of magnesium, 7 parts of alum and three parts of water glass.
The method of producing the artificial stone or marble is otherwise the same as
hitherto employed, and needs no further description. The ingredients of the
solution may be modified as far as advantageous for various purposes and if desired
colouring matters may be added according to the class of article to be produced.
In order to attain a perfectly smooth surface on the finished stone it is advan-
tageous to place the mass when in its plastic form on a surface of perfectly smooth
hard glass, metal or the like. In making columns, it is advantageous to employ
cylindrical moulds having perfectly smooth walls, in fact all moulds employed
should have smooth walls free from pores.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. The process for producing artificial stone, marble and the like, having a
polished surface, which consists in working up the mass forming the stone, marble
or the like, with a solution of chloride of magnesium, alum and waterglass in the
manner and for the purpose substantially as described.
2. A stone mass having polished surfaces, consisting of a mixture of the ordinary
artificial stone forming ingredients and chloride of magnesium, alum, barytes,
waterglass and magnesite, substantially as described.
3. A process for producing artificial stone, having a polished surface, substan-
tially as described.
Dated this 2nd 1. A TA
1000
CASTLE SMITH,
"Invention" Office, Mitre Court, Fleet Street, London, E.C.,
Agent for the Applicant.