Year: 1886

page_text: Date of Application, 9th Sept., 1886.
Complete Left, 9th June, 1887.
Complete Accepted, 12th July, 1887.
We ALEXANDER MCLEAN of 20 Reservoir Road, Brockley in the County of Surrey,
Cement Manufacturer, and ROBERT SMITH of 4 New Broad Street in the City of
London, Gentleman, do hereby declare the nature of this invention to be as
follows: :-
The object of this invention is to produce stable colours for use for artistic purposes
from aniline colours.
It is well known that aniline colours generally are of an extremely fugitive nature,
and for this reason they have not been available for many purposes for which their
great brilliancy eminently fits them; for instance, aniline green, which is of intense
brilliancy, entirely disappears after a short exposure to a strong light.
We have discovered that the fugitiveness of these aniline colors is due to the action
of oxygen, and that by using materials that contain little or no oxygen, we can
obtain colours of great brilliancy and transparency, the appearance of which will
remain unaltered for years, and which will be highly suitable for use for artistic
purposes.
The materials which we use for the purposes of our invention are those liquid and
solid hydro-carbons which contain little or no oxygen such as fusel oil, the homo-
logous alcohols found in fusel oil, amyline, naphtha, benzine, resins, pitch, asphaltum,
and tar. We have found that a good result will be obtained by mixing the following
ingredients with the requisite quantity of aniline to obtain the desired shade of colour,
viz. Fusel oil 37.02, Alcohol 24.68, Swedish pitch, asphaltum, or tar 10.00, Rosin
or gum 28.30, but we do not intend to confine ourselves to these ingredients, or to
the proportions given.
The most fleeting of the aniline colours will be found to be perfectly fixed in this
varnish, and will not be affected by the strongest light.
a
The coloured varnishes produced by this method will, when applied, be, as before
mentioned, perfectly transparent, so that they will be very suitable for application,

page_text: for example, on church windows, in lieu of stained glass, the various colours available
lending themselves admirably to the production of extremely artistic effects at a small
cost, and without the necessity for employing skilled labour."
In the preparation of the varnish above mentioned, the solid matters should be in
the proportion of about forty per cent of the whole, the proportion of turpentine or
other spirit and naphtha varying according to circumstances.
In some cases we may find it desirable to apply heat to the article which has
been coated with the varnish, as the heat hastens the drying and increases the hardness
of the varnish.
Dated this 0th day of Santamben 1002
NEWTON & SON,
Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in the Preparation of Colours for Artistic Purposes.
We ALEXANDER MCLEAN of 20 Reservoir Road, Brockley in the County of Surrey,
Cement Manufacturer, and ROBERT SMITH of 4 New Broad Street in the City of
London, Gentleman, do hereby declare the nature of this invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
The object of this invention is to produce permanent colours for use for artistic
purposes from aniline colours.
It is well known that aniline colours generally are of an extremely fugitive nature,
and for this reason they have not been available for many purposes for which their
great brilliancy eminently fits them.
We have discovered that the fugitiveness of these aniline colours is due to the
action of oxygen, and that if they are mixed with materials that contain little or no
oxygen, we can obtain colours of great brilliancy and transparency, the appearance of
which will remain unaltered for years, and which will be highly suitable for use for
artistic purposes.
The materials which we use for the purposes of our invention are those liquid and
solid hydro-carbons which contain little or no oxygen, such as fusel oil, the homo-
logous alcohols found in fusel oil, amyline, naptha, benzine, resins, pitch, asphaltum,
and tar. We have found that a good result will be obtained by mixing the following
ingredients in the proportions given with the requisite quantity of aniline crystals to
obtain the desired shade of colour, viz., fusel oil ((½ H₁₂ 0) 37.02, alcohol 24.68.
(C₂ H, O), Swedish pitch, asphaltum or tar 10-00, rosin or gum (gum Dammar)
28-30, but we do not intend to confine ourselves to these ingredients, or to the
proportions given.
The materials form a varnish in which the aniline crystals are readily dissolved,
and in which the most fleeting of the aniline colours will be found to be perfectly
fixed, and will remain unaffected by the strongest light.
The coloured varnishes produced by this method will, when applied, be, as before
mentioned, perfectly transparent, so that they will be very suitable for application, for
example, on church windows, in lieu of stained glass, the various colours available
lending themselves admirably to the production of extremely artistic effects at a
small cost, and without the necessity for employing skilled labour.
In some cases, we may find it desirable to apply heat to the article which has been
coated with the varnish, as the heat hastens the drying, and increases the hardness of
the varnish.

page_text: Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we declare that what we claim is :-
1. In the preparation of colours for use for artistic purposes, the combination with
aniline colour of liquid and solid hydro-carbons and similar materials containing little
or no oxygen, as herein described, and for the purpose set forth.
2. In the preparation of colours for use for artistic purposes from aniline colour,
rendering the aniline colour permanent by mixing it with a vehicle composed of fusel
oil, alcohol, Swedish pitch, asphaltum or tar, and resin or gum, or similar materials,
containing little or no oxygen, in or about the proportions given.
NEWTON & SONS,
Agents for the Applicants.