Decorations in Enamelling Glass and other Substances.
Year: 1887

page_text: Date of Application, 28th Nov., 1887
Complete Left, 25th Apr., 1888
Complete Accepted, 25th May, 1888
Decorations in Enamelling Glass and other Substances.
I, JAMES YATE JOHNSON, of 47 Lincolns Inn Fields in the County of Middlesex'
Gentleman do hereby declare the nature of this Invention, which has been com-
municated to me from abroad by Mathilde Aubriot of 48 ruo do Bondy, Paris, in the
Republic of France, enameller, to be as follows :
This Invention relates to a new or improved process for producing cloisonné designs
in enamelling and it has for its object enabling designs in cloisonné enamel to be pro-
duced and repeated as often as required upon glass, crystal stone and other substances
with great facility and at a very small expense.
In producing decorative designs upon glass for example the method usually
employed consists in placing a piece of glass upon the drawing or design and
tracing the outlines upon the glass by hand with a pen or brush. The pen or brush
is charged with a suitable flux prepared with gold, silver, or other colour. The lines,
that is to say, the outlines, being thus drawn with a fat or oil flux the spaces between
the lines are filled with enamels or pigments prepared with water the composition of
which varies according to the colours to be produced. The piece of glass thus prepared
is afterwards burned or heated in a muffle at the requisite temperature.
When it is required to reproduce the decoration or design upon an opaque or
semi-transparent glass, the drawing must first be calked upon the glass and the lines
are gone over with a fat or oil flux by means of a pen or a brush after which the spaces
are filled up as before in order to produce the cloisonné effect.
The preparation of cloisonné work with the pen or brush whether performed by the
tracing or by the calking process described always occupies considerable time and is
proportionately very costly. The new or improved process according to this Invention
as hereinafter described removes this disadvantage and enables the most elaborate
designs for cloisonné work to be reproduced and multiplied with great rapidity.
With this object a plate or stamp of gutta percha caoutchouc, india rubber, gelatino
or other suitable material is prepared in the first instance in such a manner as to

page_text: present reliefs or raised parts corresponding to the outline of the design of the cloisonné
work.
A pad is also prepared by stretching, for example, a piece of cloth upon a plate of
glass and this pad is coated with the flux prepared with gold, silver, or other colour.
It is then simply necessary to press the plate or stamp prepared as herein before
described lightly upon this pad and afterwards to apply it to a sheet or piece of glass
in order to instantaneously reproduce the design of the cloisonné work upon the
surface of the glass.
In order to obtain a very sharp and clean impression the pad should be charged with
a flux that has been very perfectly ground.
The design of the cloisonné being thus produced at one stroke it is filled in with
enamels or pigments prepared with water and of any desired composition or colour
which operation can be performed without previous knowledge or training. The work
heretofore performed by an artist who traces the design or goes over the impression,
obtained by calking, with a pen or brush is thus entirely dispensed with. A considerable
economy in time and labour is thus effected and enables the cloisonné work to be
produced according to this invention at a very moderate cost.
The decorated plates or articles prepared as hereinbefore described are simply placed
in the muffle or furnace and heated to a suitable temperature. The design or pattern
produced by simply applying the rubber or other stamp coated with the oil flux, on
the glass produces perfectly sharp and firm lines equal to those produced with the pen
or brush, the enamels or pigments deposited in this cloisonné do not run and in short
the effects in enamel produced according to this invention at one stroke under entirely
novel conditions with regard to cost are fully as pure, as perfect, and as durable as the
best cloisonné onamels done by hand.
The practical applications of the process are extremely numerous.
The process
applied to the decoration of transparent or opaque glass may be employed with great
advantage in the manufacture of glass sign boards or letters for example.
It is evident that the enamels or pigments employed for filling in the spaces in
the design as hereinbefore described may be omitted if desired and in place of
employing oil colours or enamels for making the outline of the design as herein before
described and filling in the spaces with water colours or enamels, this method of pro-
ceeding may be reversed, that is to say, the outlines of the cloisonné may be prepared
with water and the filling with oil.
In place of a flat plate or stamp of gutta percha, caoutchouc, india rubber, gelatine,
etc., a roller presenting the required design in relief may be employed being caused to
pass over the surface of the glass after having received a suitable coating of the
enamelling paste.
Dated this 28th day of November 1887

page_text: Decorations in Enamelling Glass and other Substances.
I JAMES YATE JOHNSON of 47 Lincolns Inn Fields in the County of Middlesex
Gentleman do hereby declare the nature of this Invention which has been com-
municated to me from abroad by Mathilde Aubriot of 48 rue de Bondy Paris in the
Republic of France Enameller and in what manner the same is to be performed to
be particularly described and ascertained in and by the following statement :-
This invention relates to a new or improved process for producing cloisonné
designs in enamelling and it has for its object enabling designs in cloisonné enamel
to be produced and repeated as often as required upon glass, crystal, stone, and other
substances with great facility and at a very small expense.
In producing decorative designs upon glass for example the method usually
employed consists in placing a piece of glass upon the drawing or design and
tracing the outlines upon the glass by hand with a pen or brush. The pen or brush
is charged with a suitable flux prepared with gold, silver or other color. The lines
that is to say the outlines being thus drawn with a fat or oil flux the spaces between
the lines are filled with enamels or pigments prepared with water the composition
of which varies according to the colors to be produced. The piece of glass thus
prepared is afterwards burned or heated in a muffle at the requisite temperature.
When it is required to reproduce the decoration or design upon an opaque or
semi-transparent glass, the drawing must first be calked upon the glass and the lines
are then covered with a fat or oil flux by means of a pen or a brush after which the
spaces are filled up as before in order to produce the cloisonné effect.
The preparation of cloisonné work with the pen or brush whether performed by
the tracing or by the calking process described always occupies considerable time
and is proportionately costly.
The new or improved process according to this invention as hereinafter described
is free from these disadvantages and enables the most elaborate designs for cloisonné
work to be reproduced and niultiplied with great rapidity and economy.
With this object a plate or stamp of gutta percha caoutchouc, india rubber,
gelatine or other suitable material is prepared in the first instance by making a
mould of wood or other suitable material into which the said gutta percha or other
materials are moulded the mould being so prepared that when the materials are
removed they present reliefs or raised parts corresponding to the outline of the design
or lines of the cloisonné work.
A pad is also prepared by stretching a piece of cloth for example upon a plate of
glass and this pad is coated with a fatty flux prepared with gold, silver or other
color. It is then simply necessary to press the plate or stamp prepared as herein-
before described lightly upon this pad and afterwards to apply it to a sheet or piece

page_text: of glass in order to instantaneously reproduce the design of the cloisonné work upon
the surface of the glass.
In order to obtain a very sharp and clean impression the pad should be charged
with a flux that has been very perfectly ground.
The cloisonné design being thus produced at one stroke is simply filled in with
suitable enamels or pigments prepared with water and of any desired composition or
color an operation which can be performed without previous knowledge or training.
The work heretofore performed by a skilled artist who traces the design or goes over
the impression obtained by calking, with a pen or brush is thus entirely dispensed
with. A considerable economy, in time and labor is thus effected and enables the
cloisonné work to be produced according to this invention at a very moderate cost.
The decorated plates or articles prepared as herein before described are simply
placed in the muffle or furnace and heated to a suitable temperature. The design or
pattern produced by simply applying the rubber or other stamp coated with the oil
Hux, on the glass produces perfectly sharp and firm lines equal to those produced
with the pen or brush, the enamels or pigments deposited in this cloisonné do not run
and in short the effects in enamel produced according to this Invention at one stroko
under entirely novel conditions with regard to cost are fully as pure as perfect and as
durable as the best cloisonné enamels done by hand.
The practical applications of the process are extremely numerous. The process
applied to the decoration of transparent or opaque glass may be employed with great
advantage in the manufacture of glass sign boards or letters for example.
It is evident that the enamels or pigments employed for filling in the spaces in the
design as hereinbefore described may be omitted if desired and in place of employing
oil colours or enamels for making the outline of the design as hereinbefore described
and filling in the spaces with water colours or enamels this method of proceeding may
be reversed that is to say the outlines of the cloisonné may be prepared with water
and the filling with oil or fatty enamels.
In place of a flat plate or stamp of gutta percha caoutchouc india rubber gelatino
etc. a roller or cylindrical surface presenting the required design in relief may be
employed being applied to the surface of the glass after having received a suitable
coating of the enamelling paste.
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:-
Producing cloisonné designs upon glass and other substances by the employment of
a plate or stamp of gutta percha caoutchouc india rubber or other suitable material
presenting raised parts or lines in relief corresponding to the lines of the design the
said plate or stamp being employed to transfer or apply the design on the surface of
the glass or other material substantially as herein before described.
Dated this 25th day of April 1888.