A NEW AND IMPROVED ARTIFICIAL STONE OR CEMENT TO BE USED IN AQUATIC OR OTHER BUILDINGS, ALSO MOULDED AND MADE APPLICABLE TO ORNAMENTAL, ARCHITECTURAL, AND OTHER PURPOSES.
Year: 1873

page_text: LETTERS PATENT to Henri Adrien Bonneville, of the British and
Foreign Patent Offices, 18, Rue de la Chaussée d'Antin, Paris,
France, and 6, Piccadilly, in the County of Middlesex, Patent
Agent, for the Invention of "A NEW AND IMPROVED ARTIFICIAL STONE
OR CEMENT TO BE USED IN AQUATIC OR OTHER BUILDINGS, ALSO MOULDED
AND MADE APPLICABLE TO ORNAMENTAL, ARCHITECTURAL, AND OTHER
PURPOSES.'
."-A communication from Messrs. Schenck, Baronet, and
Hayek, acting as Administrators of the Company known as Weiss
Cement Actien Gesellschaft, residing at Vienna, Austria.
Scaled the 12th April 1873, and dated the 27th January 1873.
COMPLETE SPECIFICATION filed by the said Henri Adrien Bonneville
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 27th January 1873, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRI
ADRIEN BONNEVILLE, of the British and Foreign Patent Offices, 18,
Rue de la Chaussée d'Antin, Paris, France, and 6, Piccadilly, in the
County of Middlesex, Patent Agent, send greeting.
WHEREAS I am in possession of an Invention for "A NEW AND
O IMPROVED ARTIFICIAL STONE OR CEMENT TO BE USED IN AQUATIC OR OTHER
BUILDINGS, ALSO MOULDED AND MADE APPLICABLE TO ORNAMENTAL ARCHITECTURAL

page_text: loses all its carbonic acid, what requires, as has been observed, about
twelve hours. By this proceeding the minerals sub. 1 which are to
produce the hydraulic mortar, lose only the carbonic acid of the
magnesia, and the calcareous parts remain behind as carbonate of lime
which resist the agency of water, and the substances denominated sub.
2 and 3 get the property of acting like mortar.
IIa.) The masses burnt after broken into fragments are reduced to an
extremely fine powder, and as such with the help of water made to a
sort of paste, or b.), the masses burnt after moulded are put when cooled
in water, where they are left during several weeks.
It has been discovered that the important result of this Invention is,
1, that the powder sub. a. can be mixed with more than the double
volume of sand, and has besides the advantage of hardening much better
and quicker, and of increasing its luting qualities; 2, that the pulverized
cement of magnesia can be particularly used for the plastering of walls,
water conducts, and reservoirs, it can likewise be used for common build-
ings, and for such hydraulic buildings which only after one or several days
come in continual contact with water; c. this Invention is particularly
important because the burnt masses of the cement of magnesia, and
hardened afterwards in water, can be used for architectural ornaments,
tubes, troughs, bricks, tiles, and other similar objects.
Having thus described the nature of the said Invention and the
manner of carrying the same into effect, what I claim and desire to
secure by the said Royal Letters Patent is, an artificial stone or water
cement made of the above-mentioned substances and the improved process
above described.
In witness whereof, I, the said Henri Adrien Bonneville, have
hereto set my hand and seal, this Twenty-fifth day of January,
in the year of our Lord One thousand eight hundred and somente