İMPROVEMENTS IN DECORATING OR ORNA- MENTING GLASS
Year: 1875

page_text: LETTERS PATENT to Edouard Aubriot, of 2, Rue Ste. Appoline, Paris,
France, for the Invention of “ İMPROVEMENTS IN DECORATING OR ORNA-
MENTING GLASS."
Sealed the 12th November 1875, and dated the 14th May 1875.
PROVISIONAL SPECIFICATION left by the said Edouard Aubriot at the
Office of the Commissioners of Patents, with his Petition, on the
14th May 1875.
I, EDOUARD AUBRIOT, of 2, Rue Ste. Appoline, Paris, France, do
hereby declare the nature of the said Invention for "IMPROVEMENTS IN ·
DECORATING OR ORNAMENTING GLASS," to be as follows :—
According to my Invention I take a sheet of ordinary glass, on which
I spread a layer of vitrifiable color of any desired shade diluted in water
or other substance. When this layer of color is dry I raise the patterns
or designs with a stencil plate and a brush, then I spread on this sheet
of glass a piece of tulle, muslin, or other suitable material, itself having
on it other designs or patterns. I place the whole in a box or closed
chamber filled with vitrifiable powder. By means of a bellows or fan I

page_text: place this powder in a state of suspension, and it deposits on the sheet
of glass on those parts not covered by (en reservant) the designs of the
tulle, muslin, or other material. The operation being finished I remove
the tulle or other material, and the sheet of glass has the impress or
pattern on it; then I put the articles in a furnace.
It must be understood that I can, if desired, employ several layers of
varied colors to produce designs or patterns more or less ornamented.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edouard Aubriot in the Great Seal Patent Office
on the 12th November 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDOUARD
AUBRIOT, of 2, Rue Ste. Appoline, Paris, France, send greeting.
1
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of May, in the year of our
Lord One thousand eight hundred and seventy-five, in the thirty-eighth 1
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Edouard Aubriot, Her special licence that I, the
said Edouard Aubriot, my executors, administrators, and assigns, or such
others as I, the said Edouard Aubriot, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to 2
time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the
United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN DECORATING OR ORNA-
MENTING GLASS," upon the condition (amongst others) that I, the said 2
Edouard Aubriot, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should par-
ticularly describe and ascertain the nature of the said Invention, and
in what manner the same was to be performed, and cause the same
to be filed in the Great Seal Patent Office within six calendar months 3
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Edouard Aubriot, do hereby declare

page_text: performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
According to my Invention I take a sheet of glass which has been
previously cleaned with whitening ("Meudon," "Espagne,") or other
similar material, and I spread over it a coating of some vitrifiable colour
or colours, red, blue, yellow, or other shade or shades. This coating is
prepared with gum arabic or other similar substance in such proportion
as not to be too adhesive or too easily rubbed off, then by means of a
brush, which I rub over a perforated sheet of paper, pasteboard, or metal
stencil plate of any desired patterns, I rub off those parts which are
intended to be transparent and leave untouched those which are to be
coloured. This done I introduce the glass sheet so prepared in a stovo,.
preferably heated by steam. The gum in becoming melted fixes the
colour to the glass, then I remove the glass from the stove and lay on it
a frame composed of thin fabric, such as muslin or other similar
material, which will adhere, or nearly so, to the sheet of glass. The
sheet of glass with the muslin or other fabrio frame is then intro-
duced in a closed box or chamber containing vitrifiable powder, which
powder by means of a fan or bellows is put in a state of suspension
or agitated in the interior of the said box or chamber, and this dust
then deposits on all the parts of the sheet of glass which are not pro-
tected by the fibres of the fabric. If, for example, the first coat laid on
by brush is blue, and the second in form of dust in the box or
chamber is for example white, the patterns of the tissues used become
combined with the patterns of the first shade or colour which has been
laid on by means of the brush aforesaid, and of which certain parts have
been preserved. The frame may be covered with tulle, muslin, lace,
gimp, gauze, in fact, with any desired fabric, wire gauze, or perforated
metals, which will allow the vitrifiable powder or dust in motion in the
box to deposit, lay down, or settle on the glass. This done the frame is
taken off and the sheet of glass is put into a muffle, glazing, or other
furnace, whereby the colours are fused.
The characteristic feature of my Invention is the fusing of several
colours at one and the same time and by a single firing, consequently I
am able to place or lay, for example, on one side of the glass sheet blue
and white colours, while on the other side I lay yellow or silver yellow;
and according to the reserved parts and patterns employed I obtain say
blue, white, green, yellow, or other colours as desired.

page_text: Having now described the nature of my said Invention and in what
manner the same is to be performed, I declare that I claim the orna-
menting or decorating of glass in and by the employment of vitrifiable
colours laid thereon by means of brushes or pencils, the desired
patterns being rubbed off by means of brushes in combination with
other layers laid on in form of dust in a box or chamber containing
vitriable powder or dust, the said powder or dust passing through the
openings in the fabrics, all substantially in manner described.
In witness whereof, I, the said Edouard Aubriot, have hereunto
set my hand and seal, this Tenth day of November, in the
year of our Lord One thousand eight hundred and seventy-
five.