Improvements in or relating to the Manufacture of Artificial Stone.
Year: 1896

page_text: Date of Application, 3rd June, 1896-Accepted, 8th Aug., 1896
COMPLETE SPECIFICATION.
Improvements in or relating to the Manufacture of Artificial
Stone.
.
'
A communication from MARTIN THYS, of 81 Rue de Munich, St. Gilles, Brussels,
in the Kingdom of Belgium.
I, ALFRED JULIUS BOULT of 111 Hatton Garden in the County of Middlesex,
Chartered Patent Agent, 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 :-
The object of the present invention is to manufacture artificial stone-tiles without
the application of heat or steam to either the separate ingredients, the mixture or
the tiles after they have been pressed or moulded.
The present process therefore effects a great saving in the cost of production,
which enables the artificial stone tiles to be sold cheaply and therefore to be used
more generally than has hitherto been possible.
The process is as follows;-
At first a mixture is prepared (No. I) say of;-
4 parts of a siliceous material, such for instance as sand
2 parts of a calcareous body such for instance as Portland cement.
To this mixture is added a weak solution of glue and the whole stirred till all
parts are thoroughly mixed.
For making the solution of glue ordinary glue may be used this being simply
dissolved in water to such a consistency as to form a good binding medium for the
sand and cement.
Then a second mixture is prepared (No. II) in order to colour the No. I mixture,
according to the purpose for which the artificial stone tile is to be used. The
No. 2 mixture consists say of 2 parts cement and 1 part colouring matter.
These ingredients are thoroughly mixed together in a manner similar to the
No. I mixture.
In this way it is possible by suitably dividing the mould or form into which the
beforementioned ingredients are placed, to obtain on the surface of the same mass
several different colours.
Then the mass is put into a press and after they are taken out of the press the
tiles are,left from three to four days, water being poured over them say every two
or three hours.
After the tiles prepared in the above described manner have attained the first
degree of hardness they are placed in a tank filled with cold water where they are
left for about four days to attain the final hardness.
Then the tiles are taken out, washed and dried. The tiles prepared in the
manner above described have all the properties of natural stone, are as strong as
marble, and stand washing and cleaning with soap etc. as well as marble, so that
the colouring of the tile does not fade.
Having now particularly described and ascertained the nature of my said inven-
tion as communicated to me by my foreign correspondent and in what manner the
same is to be performed, I declare that what I claim is:-
1. In the manufacture of artificial stone the employment of a solution of glue
as a medium for binding together the ingredients of which the stone is composed.

page_text: 2. In the manufacture of artificial stone moulding into tiles or other desired
shapes the plastic mass comprising a mixture of a silicate and a calcareous body
and a solution of glue with or without the admixture therewith of a colouring
agent then pressing the tiles in a press and after removing them from the press
periodically pouring water over them and subsequently soaking them in water and
washing and drying them substantially as described.
3. The manufacture of artificial stone without the application or employment of
heat or steam substantially as described.
Dated this 3rd day of June 1896.
BOULT & WADE,
Agents for the Applicant.