Method of Manufacturing Artificial Stones with Glass Surfaces.
Year: 1891

page_text: Date of Application, 26th Feb., 1891
Complete Specification Left, 26th Nov., 1891-Accepted, 2nd Jan., 1892
PROVISIONAL SPECIFICATION.
Method of Manufacturing Artificial Stones with Glass Surfaces.
1. CARL BREUER, of Bunzlau, in the Province of Silesia, Kingdom of Prussia,
Germany, a partner of the firm Lippert & Sohn of Bunzlau do hereby declare the
nature of this invention to be as follows:-
The object of this invention is a new method in giving artificial stones surfaces
of glass for the purpose hereinafter set forth.
In the architecture and plastic arts of now-a-days glass is to some extent made
use of for ornamental surfaces exposed to view.
The glass is applied in the shape of plates, which are either let in or fixed to
the stone in various manners. However not only these means for fixing the glass
are found to be very expensive, but also the glass itself which necessarily must be
strong and thick, such as plate-glass, enhances the price to such an extent, that only
little use has been made of this kind of ornamentation.
My invention will be found to be a welcome method of giving glazed surfaces to
plastic works of art inexpensive and exceedingly durable.
In order to carry the same into effect I construct a mould, the bottom of which
is a sheet of glass of which the outer side is of any desired colour or pattern, and
the inside either roughed or not ad libitum.
Herein artificial stone in a liquid state is cast, the same will adhere to the glass,
while the sides are prepared in such a manner that they may be easily withdrawn
after the stone is hard and dry. One or more of them however may also be made
of glass in a similar manner as the bottom of the mould, when it is required to
give the block two or more glazed surfaces.
Before the artificial stone is completely hardened the surface thereof is run
over by a fluted-roll, whose impressions facilitate the adherence of the block to the
surrounding building material."
Blocks of this kind may be made to any thickness and of any size. They have
the strength of ordinary stones as applied for building purposes and their surfaces
intended to be exposed to view have the same appearance as those costly plate-
glasses. They may be largely used in many branches of industry, as for instance
for pavements, glazed bricks, dutch-tiles and many others. They also may be
embroidered ornamentally with metal-framing or bear themselves ornamentations of
any conceivable design and pattern.
.ה
1001
COMPLETE SPECIFICATION.
Method of Manufacturing Artificial Stones with Glass Surfaces.
1. CARL BREUER, of Carlswerk, Bunzlau in the Empire of Germany
Manufacturer, do hereby declare the nature of my said invention and in what manner
the same is to be performed to be particularly described and ascertained in and
by the following statement :-
When glass plates are used for decorative purposes they must be of consider-
able thickness. They therefore come very expensive, and are also difficult to
work with.
According to the present invention an artificial stone with glass surface is

page_text: produced by taking an ordinary sheet of glass, which is laid face downwards in the
bottom of a mould with hinged sides. The back of the glass may be roughened
in manufacture, by any well known means, and a concrete mixture (cement,
sand etc.) is placed in the mould on the roughened glass, with which, when set, it
will naturally form a compact body. Before the concrete is fully hardened it may
be grooved on the surface in order the easier to make it bind with the mortar or
cement employed in building with it.
When the concrete is sufficiently set then the now glass surfaced stone is removed
from the mould and is ready for use, it is obvious that by taking instead of a single
sheet of glass, several smaller pieces which may be of various colours, decorative
pattern may be produced and the glass may be etched or otherwise decorated before
or after casting it in with the concrete, and by employing so called "toughened
glass extra strength is securel.
::
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is-
The method of manufacturing artificial stone with glass surface consisting in
casting concrete in a mould in which glass, preferably with roughened back, is
placed, substantially in the manner as and for the purpose described.
1001
BONNE & Co.,
57 & 58, Chancery Lane, London,
Authorised Patent and Trade Mark Agents.