IMPROVEMENTS IN THE MANUFACTURE OR PREPARATION OF PIGMENTS OR COLORS FOR USE IN THE ARTS AND MANUFACTURES
Year: 1878

page_text: LETTERS PATENT to Walter Alfred Barlow, of 6, St. Paul's Churchyard,
London, Patent Agent and Engineer, for the Invention of "IMPROVEMENTS IN
THE MANUFACTURE OR PREPARATION OF PIGMENTS OR COLORS FOR USE IN
THE ARTS AND MANUFACTURES." A communication from abroad by Alfred.
Emile Méry, of Paris, France, Artist.
Sealed the 18th March 1879, and dated the 21st September 1878.
PROVISIONAL SPECIFICATION left by the said Walter Alfred Barlow at
the Office of the Commissioners of Patents on the 21st September 1878.
WALTER ALFRED BARLOW, of 6, St. Paul's Churchyard, London, Patent Agent
and Engineer.
"IMPROVEMENTS IN THE MANUFACTURE OR PREPARATION OF
PIGMENTS OR COLORS FOR USE IN THE ARTS AND MANUFACTURES.' A commu-
nication from abroad by Alfred Emile Méry, of Paris, France, Artist.
.
"
This Invention has for its object the manufacture or preparation of colors, and
consists in making or mixing the colors with or by means of a paste composed as
herein-after set forth, and which gives to such colors remarkable qualities, which
render them susceptible of being substituted with advantage for colors employed in
the arts and manufacture.

page_text: The colors to be mixed with the paste are ground and then mixed together, and
the resultant product will be color capable of preservation for a great length of
time, without the slightest deterioration.
These colors will serve for use in a variety of useful industrial purposes. For
instance, they can with advantage be used in the place of pastels for water color
painting, and painting in oils; they may be applied on tissues and wall papers with
the greatest facility; they may also be used to paint and decorate porcelain,
faience, pottery, earthenware, china, tiles, and so forth..
The colors prepared according to this Invention possess the quality of drying very
quickly, which renders them specially advantageous and valuable to artists in
sketching from nature.
There will now be described the method of preparation of the paste, which is the
chief object of my Invention.
There is intimately mixed and in a warm water bath about 208 parts by weight
of pure white wax, and 260 parts of glycerine.
When the wax is completely melted, there is added to the mixture a liquid
composed of 12 parts of resin dissolved in ether.
Next there is thrown in little by little and whilst stirring the liquid 12 parts
by weight of ammonia.
When this operation is terminated, there is added to the mass a liquid formed of
25 parts by weight of isinglass, or any other equivalent gumaceous matter dissolved
in about 260 parts by weight of glycerine.
There is then thrown into this mixture a quantity more or less of water (about
200 parts for example), and the stirring is continued until the mixture becomes
cold.
The paste thus obtained is mixed with the ground colors to which is to be added
a quantity of glycerine, varied according to the degree of dryness which is intended
to be given the product.
It is to be understood that it is intended to claim the composition of the paste
above described, without limit to the exact proportions specified; as for paints
intended for different purposes some of the ingredients may be employed in greatly.
reduced quantities.

page_text: Resin
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These proportions above given are such as have been found to give results,
but the quantity of the water and glycerine may be varied according to the degree
of moistness of the paste to be produced.
The colors to be mixed with the paste are ground and then mixed together, and
the resultant product will be color capable of preservation for a great length of time
without the slightest deterioration.
These colors will serve for use in a variety of useful industrial purposes; for
instance, they can with advantage be used in the place of pastels for water colour
painting, and painting in oils; they may be applied on tissues and wall papers with
the greatest facility; they may also be used to paint and decorate porcelain, faience,
pottery, earthenware, china, tiles, and so forth.
The colors prepared according to this Invention possess the quality of drying
very quickly, which renders them specially advantageous and valuable to artists in
sketching from nature.
There will now be described the method of preparation of the paste, which is the
chief object of my Invention. There is intimately mixed and in a heating chamber
to which diffused heat is applied, that is, the chamber is not beated directly from a
fire, but through water, steam, or other method, 208 parts by weight of pure white
wax, and 260 parts of glycerine.
When the wax is completely melted, there is added to the mixture a liquid
composed of 12 parts of resin dissolved in ether. Next there is thrown in little
by little and whilst stirring the liquid 12 parts by weight of ammonia.
When this operation is terminated, there is added to the mass a liquid formed of
25 parts by weight of isinglass, that is, fish bone glue, or any other equivalent
gumaceous gluey matter dissolved in about 260 parts by weight of glycerine.
There is then thrown into this mixture a quantity more or less of water (about
200 parts for example), and the stirring is continued until the mixture becomes
cold.
The paste thus obtained is mixed with the ground colors to which is to be added
a quantity of glycerine, varied according to the degree of dryness which is intended.
to be given the product.
It is to be understood that it is intended to claim the composition of the paste
above described without limit to the exact proportions specified, as for paints
intended for different purposes some of the ingredients may be employed in greatly
reduced quantities.

page_text: Having now particularly described and ascertained the nature and particulars of
the said Invention, and given such directions as are necessary for practically
carrying the same into effect, I claim, the improvements in the manufacture or
preparation of pigments or colors for use in the arts and manufactures, and the
improved industrial product, substantially as herein specified.
In witness whereof, I, the said Walter Alfred Barlow, have hereunto set my
hand and seal, this Twentieth day of March, in the year of our Lord One
thousand eight hundred and seventy-nine.
WALTER A. BARLOW. (L.S.)