Improvements in and relating to the Manufacture of Artificial Siliceous Stone.
Year: 1889

page_text: Date of Application, 16th Feb., 1889
Complete Specification Left, 15th Nov., 1889-Accepted, 11th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in and relating to the Manufacture of Artificial
Siliceous Stone.
'
We, ARCHIBALD CAMPBELL PONTON of Viewfield, Parkstone, in the County of
Dorset, Architect, BENJAMIN LEWIN MOSELY, of 36 Robertson Street, Hastings, in
the County of Sussex, Surgeon Dentist, and CROMPTON CHAMBERS of Town Hall
Chambers, Hastings, in the County of Sussex; Solicitor, do hereby declare the nature
of this invention to be as follows :-
In our applications for Letters Patent No. 5808, dated 18th day of April 1888;
No. 15,256 dated 23rd day of October, 1888; and No. 2718, dated 15th day of
February 1889 we have alluded to silica in a certain state or condition which is called
Tridymite.
By our present invention we take solid siliceous materials, such as sands, gravels,
flints or the like, and burn them separately in suitable ovens or kiln; until we find
that there is no change in their respective specific gravities. Subsequently we
cement any of these materials together by the aid of a siliceous cement and (after
moulding) crystallize the same by heat and thereby obtain an artificial siliceous stone
which has no permanent expansion or contraction when subjected to the heat of an
ordinary fire. We also find that stone made in this manner may be returned to the
moulds without showing any shrinkage or distortion.
Dated this 16th day of February 1889
FAIRFAX & WETTER,
433, Strand, London, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in and relating to the Manufacture of Artificial
Siliceous Stone.
We, ARCHIBALD CAMPBELL PONTON, of Viewfield, Parkstone, in the County of
Dorset, Architect, BENJAMIN LEWIN MOSELY, of 36, Robertson Street, Hastings, in
the County of Sussex, Surgeon Dentist, and CROMPTON CHAMBERS, of Town Hall
Chambers, Hastings, in the County of Sussex. Solicitor, 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 specifications of our applications for Letters Patent No. 5808, dated 18th day
of April 1888; No. 15,256, dated 23rd day of October, 1888; and No. 2718, dated
15th day of February, 1889, we have alluded to silica in a certain state or condition
which is called Tridymite.
By our present invention we take solid siliceous materials such as sands, gravels,
flints or the like, and burn them separately in suitable ovens or kilns until they have
arrived at a point from which no further change takes place in their respective
specific gravities. This we do by testing the same from time to time, and when we
find that the stable or normal condition has been arrived at for each of the respective
kinds of silica exposed to heat, we remove the same from the kiln or oven employed.
Subsequently, the particles of any of the aforesaid materials, or any combinations
thereof, are cemented together by a siliceous cement composed of an alkaline silicate,
such as silicate of soda, or of potash, or a combination of the two, sufficient cement
being used to coat the particles, and the mass is then compressed in a suitable mould.
After moulding, the blocks are exposed to heat until the cementitious material has
become crystallized, and we obtain an artificial siliceous stone which has no permanent

page_text: expansion or contraction when subjected to the heat of an ordinary fire. We also find
that stone made in this manner may be returned to the moulds in which the material
was originally compressed, without showing any shrinkage or distortion.
Having now particularly described and ascertained the nature of our said Inven-
tion. and in what manner the same is to be performed we declare that what we
claim is :-
1. In the manufacture of artificial siliceous stone, the preparation of solid siliceous
materials by burning the same separately in one or more ovens or kilns until no
further change takes place in the respective specific gravities thereof; substantially
as and for the purpose herein described.
2. In the manufacture of artificial siliceous stone, the combination of a siliceous
cement, with one or more kinds of solid siliceous particles prepared by previous
burning until an unchangeable specific gravity for each kind has been arrived at,
substantially as and for the purpose herein described.
3. The method herein described of making an artificial siliceous stone without
shrinkage or distortion, substantially as described.
Dated this 14th day of November 1889.
FAIRFAX & WETTER,
433, Strand, London, Agents for the Applicants.
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