IMPROVEMENTS IN THE DECORATION OF WALLS, PAVEMENTS, AND OTHER SURFACES IN CEMENT, CONCRETE, AND OTHER SUBSTANCES
Year: 1864

page_text: PROVISIONAL SPECIFICATION left by William Clark, at the Office
of the Commissioners of Patents, with his Petition, on the 15th
December 1864.-A communication from abroad by Eugéne Mathieu de
Bonnay, Gentleman, of 29, Boulevart St. Martin, Paris.
I, WILLIAM CLARK, of 53, Chancery Lane, in the County of Middlesex,
Engineer and Patent Agent, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN THE DECORATION OF WALLS, PAVEMENTS, AND OTHER
SURFACES IN CEMENT, CONCRETE, AND OTHER SUBSTANCES," to be as follows:-
This Invention relates to the production of designs for wall decorations and
especially for pavements in hard cements, which designs may consist of figures,
landscapes, animals, flowers, fruit, architectural subjects, or it fact any that
may be produced by pencil or color. This method differs essentially from
fresco painting inasmuch as in the latter the color is only superficially applied
on prepared surfaces, while according to this Invention I produce the designs
in the cement employed, in other words by inlaying a colored cement in
another layer of cement of a different color. The Invention comprises not
only the production of pavements by means of concrete, asphalte, or other
materials usually employed, but especially the imitation and reproduction of
subjects from nature in the manner herein-after described. A surface having
been obtained, such as a wall or otherwise, I then apply a solid layer of cement
of from two-thirds of an inch to an inch in thickness, which is spread uniformly
thereon; before the cement has time to harden I proceed as follows, according
to the nature of the design to be produced.

page_text: For design Number 1 of the annexed Drawings where an outline only is
to be obtained, the design is traced on the cement while it is yet soft, which
is then carefully hollowed out with a suitable tool and allowed to dry; I
then fill in the hollows with cement colored black or any other tint.
the whole is well dry it may be polished in the ordinary manner; in this
manner the subject is represented in outline, only of a uniform color.
When
2ndly, in order to produce design No. 2 I proceed in the manner before
described, with this difference, that after having executed the design I remove
the portion of the cement forming the ground and fill in with cement of a
different color. The design itself may also be in colored cement and have a
ground of a different shade.
3rdly, the design No. 8 may be produced by preparing cements of different
shades, applying them to produce the shadows and half tints, after having
removed the cement from the parts to be so tinted the ground may be of the
same shade as the design or of a different color.
_ 4thly, I may also by means of mineral colors or other coloring matters
impart to the cement all the tints necessary for imitating paintings without
exception as design No. 4.
The method of operation is the same as before with the exception that the
cements are graduated in tint according to the nature of the design, and so
as to produce all the back ground effects of paintings, and even aerial per-
spective. Any kind of hard cements, concrete, asphalte, and other bituminous
matters may be used for the purposes of this Invention, which is applicable
for all kinds of decorative purposes.