AN IMPROVED PAINT OR COMPOUND FOR COATING METALS, WOOD, AND OTHER SUBSTANCES.
Year: 1874

page_text: LETTERS PATENT to Walter Chidiock Nangle, of Bull Point, near
Devonport, in the County of Devon, late Captain Royal Artillery,
Assistant Controller Bull Point Establishment, for the Invention
of "AN IMPROVED PAINT OR COMPOUND FOR COATING METALS, WOOD, AND
OTHER SUBSTANCES.
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ealed the 3rd July 1874, and dated the 7th May 1874.
PROVISIONAL SPECIFICATION left by the said Walter Chidiock
Nangle at the Office of the Commissioners of Patents, with his
Petition, on the 7th May 1874.
I, WALTER CHIDIOCK NANGLE, of Bull Point, near Devonport, in the
County of Devon, late Captain Royal Artillery, Assistant Controller
Bull Point Establishment, do hereby declare the nature of the said In-
vention for "AN IMPROVED PAINT OR COMPOUND FOR COATING METALS, WOOD, AND
OTHER SUBSTANCES," to be as follows:-
i
The basis of my improved paint is tar, from which some of the oils
have been extracted, say, in the process of manufacturing aniline dyes

page_text: the nature of tar freed from these oils differing materially from that of
ordinary tar.
After three or four oils have been extracted from the tar, but before
it has become pitch or asphalt, I take, say, ten gallons and put it into a
boiler, adding thereto about twenty-five pounds weight of rosin, and
about nineteen pounds of sulphur, boil well till rosin and sulphur
are completely dissolved, then add forty gallons or thereabout of the
same prepared tar, and keep the whole well stirred until about lukewarm,
when I thin the compound with about an equal quantity of spirits of
turpentine, i.e., in this case fifty gallons.
I may use any equivalent in lieu of rósin, such for example as shellac or
a mixture of both, and I may find it desirable in some cases to dispense
with the sulphur. The paint thus prepared may be applied with a brush
like ordinary paints, dries in about three hours, is little liable to crack
or blister, much cheaper than oil paint (the tar as used by me being, so
to say, a refuse) and more lasting.
Prepared as above set forth the paint is black and will give a beautiful
black enamel appearance to any surface upon which it may be applied;
other colours may however be given to the compound by the addition of
strong stainers, such for example, as red and white led, iron ore, Spanish
brown, Van Dyck red, vermillion, Brunswick and other greens, yellow
chromes, indigo (various blues, greens, and yellows), and other coloring
matters.
SPECIFICATION filed in pursuance of the conditions of the Letters
Patent filed by the said Walter Chidiock Nangle in the Great :
Seal Patent Office on the 3rd July 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WALTER
CHIDIOCK NANGLE, of Bull Point, near Devonport, in the County of
Devon, late Captain Royal Artilliery, Assistant Controller Bull Point
Establishment, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of May, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,

page_text: give and grant unto me, the said Walter Chidiock Nangle, Her special
licence that I, the said Walter Chidiock Nangle, my executors;
administrators, and assigns, or such others as I, the said Walter Chidiock
Nangle, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to 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
"AN IMPROVED PAINT OR COMPOUND FOR COATING METALS, WOOD, AND OTHER
SUBSTANCES," upon the condition (amongst others) that I, the said
Walter Chidiock Nangle, my executors or administrators, by an instru-
ment in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Inven-
tion, 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 next and immediately after the date of the said Letters

page_text: fifty gallons of the prepared tar, stirring well and finally thinning with
fifty gallons of turpentine.
My improved paint, thus prepared, is black, and will give a beautiful.
black enamel appearance to any surface upon which it may be applied;'
other colors may however be given to the compound by the addition of
strong stainers, such for example as red and white lead, iron ore, Spanish
brown, Van Dyck red, vermillion, Brunswick and other greens, yellow
chromes, indigo, and various blue, green, yellow, and other coloring,
matters. Thus prepared my improved paint may be applied with a
brush like ordinary paints, dries in about three hours, is not liable to
crack or blister, is more lasting than oil paint and much cheaper, the
partially spent or the artificial tar as used by me being either a refuse or
a by-product of other manufactures or a cheap preparation of pitch.
I find the precise ingredients above enumerated as constituents of my
paint the most easily procured and treated, and the paint thus produced
the most suitable for general application; but I may use in lieu of resin
any substance of a similar nature, such. for example as shellac and I
might use a mixture of resin and shellac to compensate for inferior
quality of one or other of them, and for special application of the paint
I may dispense with the sulphur.
$
I particularly desire it to be understood that I do not insist upon the
tar which I use being entirely freed from all its oils, as the presence of
a slight per centage of any of them will not sensibly detract from the
efficiency of my paint, but that I prefer to use the tar in as nearly as
possible the same condition as pitch heated as above described.
I would have it also understood that I only limit myself approximately
to the proportions herein given, and that I propose to substitute for any
of the matters herein specified as used in the preparation of my paint
any others possessing the same properties.
And having now described and ascertained the nature of my said
Invention and in what manner the same is or may be performed, I claim
as secured to me by the herein-before in part recited Letters Patent, the
use of a paint composed of partially spent or of artificial tar, combined
substantially as herein-before set forth, with resin, or resin and shellac,
or their equivalent, and with or without sulphur or its equivalent;

page_text: either combination being thinned with spirits of turpentine or other
analagous spirit.
In witness whereof, I, the said Walter Chidiock Nangle, have
hereunto set my hand and seal, this Twenty-ninth day of June, in
the year of our Lord One thousand eight hundred and seventy-
four
W. C. NANGLE. (L.s.)