IMPROVEMENTS IN COLORING ARTICLES OF GLASS AND THE LIKE FOR ORNAMENTAL OR USEFUL PURPOSES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, ARTHUR HERBERT SIMPSON, F.R.M.S. Physical Demonstrator, University
Collego Nottingham, do hereby declare the nature of the said Invention for
IMPROVEMENTS IN COLORING ARTICLES OF GLASS AND THE LIKE FOR
ORNAMENTAL OR USEFUL PURPOSES," to be na follows, that is to say:—
"
"
This Invention has for its object the coloring of articles made of glass and other
similar materials in a convenient and novel manner for various ornamental and
useful purposes so that the color of any article may be speedily and easily changed
or removed altogether if desired.
In carrying out the Invention any of the so-called aniline colouring matters or
other suitable coloring matter which is soluble in alcohol or ether are mixed with
collodion or a suitable varnish. The articles to be colored or ornamented are
dipped into or painted or treated with this solution which quickly dries aftor
application leaving a thin film of colored matter on the article so treated of any
desired shade. The film is thus fixed or it may be more permanently fixed by
subsequent treatment with varnish and it is not easily damaged by ordinary
wiping or washing but it may be easily removed by using alcohol or spirits of
wine if it be desired for the purpose of restoring the article to its original color
or putting on another color. The Invention is specially valuable for coloring the
globes or glass envelopes used in electric lighting and also for coloring glass
transparencies used for stage effects, which have hitherto been principally obtained
by using thin sheets of colored gelatine. By this Invention much more varied,
beautiful and brilliant colors may be used and the glass caused to exhibit effects
not hitherto been found possible to obtain with glass as at presont commonly
colored.
:
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page_text: FOR
I ARTHUR HERBERT SIMPSON F.R.M.S. Physical Demonstrator, University
College, Nottingham, do hereby declare the nature of my said Invention
for IMPROVEMENTS IN COLORING ARTICLES OF GLASS AND THE LIKE
ORNAMENTAL OR USEFUL PURPOSES," and in what manner the same is to bo
performed, to be particularly described and ascertained in and by the following
statement
+
This Invention has for its object the coloring of articles made of glass and other
similar material in a convenient and novel manner for various ornamental and
useful purposes so that the color of any article may be speedily and easily changed
or removed altogether if desired.
In carrying out the Invention any of the so called aniline coloring matters or
other suitable coloring matter which is soluble in alcohol or ether is mixed with
a solution of gun cotton in ether and alcohol (collodion). The articles to be colored
are treated with this solution which quickly drios after application, leaving a thin
film of colored matter on the article so treated of any desired shade. The film is
thus fixed or it may be more permanently fixed by subsequent treatment with
varnish. This film is not easily damagod by ordinary wiping or washing but it
may be easily removed if desired by using alcohol, ether or hot strong solution
of soda for the purpose of restoring the article to its original state. The Invention
is specially valuable for coloring the globes or glass envelopes used in electric
lighting, and also for coloring glass transparencies used for stage effects, which
effects have hitherto been principally obtained by using thin sheets of colored
gelatine or glass stained by the ordinary process. For coloring the glass envelopes
of electric incandescent lamps a rich amber tint I employ about 20 grains of
fluorescino dissolved in one pint of collodion which will be sufficient to color
about 100 lamps. The lamps are carefully dipped and manipulated by slowly
turning them round in this solution until the lamp is coated when it is hung up
to dry. When dry the lamp may be used in this condition but a deeper and
clearer tint will be obtained if the lamp be held over the flame of a bunsen burner
or otherwise heated for a short time until the required tint is obtained. With tho
majority of aniline colors however, super heating after dipping and drying is not
necessary indeed with some dyes it is disadvantageous. The amount of coloring
matter taken, to a pint or other given quantity of collodion, will of course depend
upon the taste and judgment of the operator and the depth of color required.
Should any of the filins after drying appear dull and semi-transparent they may
be treated with a coat of varnish applied by dipping in the same way as the
color solution but the article is first heated and dipped in the varnish whilst
warm.
The varnish is preferably the bard negative varnish used in photography
which dries very rapidly thus enabling the lamps to be touched as soon as
they are cold.
When coloring flat plates of glass the coloring solution is poured on and floated
as in preparing an ordinary wet plate for photography and if varnishing be
necessary the varnish is applied in the same way as the coloring solution only
the glass is first heated. In coloring or subsequently varnishing flat plates, by
this process, thic solution and varnish are manipulated exactly as in preparing and
finishing a photographic plato for the wet process.
A varied effect may be given to the glass by super-imposing another color
solution in the same manner over the first film.

page_text: Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is :-
1. The method of coloring electric light lamps and other articles of glass or the
like by means of films of collodion colored by aniline coloring matters or other
coloring matters soluble in alcohol or ether.
2. The method of obtaining an amber color on glass by employing a solution
of fluorescine and collodion and superheating the glass when the film is dry.
Witness,
LOCK MOORE
Patent Agent,
Nottingham.
ARTHUR HERBERT SIMPSON.