METALLIC LEAD Paint
Year: 1871

page_text: LETTERS PATENT to James Webster, of Birmingham, in the County
of Warwick, Engineer, for the Invention of
METALLIC LEAD Paint."
"THE MANUFACTURE OF
Scaled the 9th April 1872, and dated the 21st October 1871.
PROVISIONAL SPECIFICATION left by the said James Webster at the
Office of the Commissioners of Patents, with his Petition, on the
21st October 1871.
I, JAMES WEBSTER, of Birmingham, in the County of Warwick,
Engineer, do hereby declare the nature of the said Invention for "Tas
MANUFACTURE OF METALLIC LEAD PAINT," to be as follows:-
:-
The object of my Invention is to produce a metallic lead paint for the
purpose of resisting the action of acids, sea water, and other like
destructible bodies, and also the prevention of oxidation on the surfaces
of substances to which the said paint may be applied.

page_text: The mode of carrying out my said Invention is as follows:-I take
metallic lead and melt it in a crucible or in any suitable vessel or
furnace; when the melted lead is brought to a temperature of from 600
to 800 Fahrenheit or even to a higher temperature, say to a bright red
beat; I then add roll or powdered sulphur gradually until a sample
taken from the mixture and cooled will freely pulverize. Or instead of
the said sulphur I may use the sulphate or pyrites of iron, copper, or
any other sulphate or sulphuret for producing a like result in an open or
closed furnace, or in an ordinary casting pot.
I then orind the pulverized mixture with water a
انم
.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Webster in the Great Scal Patent Office
on the 13th April 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
WEBSTER, of Birmingham, in the County of Warwick, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-first day of October, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
fifth year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said James Webster, Her special licence that
I, the said James Webster, my executors, administrators, and assigns,
or such others as I, the said James Webster, my executors, adminis-
trators, 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 "THE MANUFACTURE OF METALLIC
LEAD PAINT," upon the condition (amongst others) that I, the said
James Webster, my executors or administrators, by an instrument in
writing under my, or their, or one of their hands and seals, should
particularly describe and ascertain the nature of the said Invention,
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 Patent.

page_text: NOW KNOW YE, that I, the said James Webster, do hereby declare
the nature of said Invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by tho
following statement :-
:―
The object of my said Invention is to produce a metallic lead paint
for the purpose of resisting the action of acids, sea water, and other like
destructible bodies, and also the prevention of oxidation on the surfaces
of substances to which the said paint may be applied.
The mode of carrying out my said Invention is as follows:-I take
metallic lead and melt it in a crucible or in any suitable vessel or
furnace; when the melted lead is brought to a temperature of from six
hundred to eight hundred degrees of Fahrenheit's scale or even to
a higher temperature, say to a bright red heat, I then add roll or
powdered sulphur gradually until a sample taken from the mixture and
cooled will freely pulverize, or instead of the said sulphur I may add to
the melted lead galena, the sulphate or sulphuret of iron (iron pyrites),
the sulphate or sulphuret of copper or any other sulphate or sulphuret
for producing a like or similar result. When the materials or ingre-
dients are properly mixed and tested I cool the mixture or compound
and pulverize it, in which state it may be kept or sold.
When required to be used as paint, varnish or covering, I grind the
said pulverized mixture or compound with cither water or oil according
to the purposes for which it is required.
Having thus fully described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I claim as
my Invention, and desire to secure by the aforesaid in part recited
Letters Patent, the manufacture of metallic lead paint substantially as
hercin described.
In witness whereof, I, the said James Webster, have hereunto set
my hand and seal, this Thirteenth day of April, in the year of
our Lord One thousand eight hundred and seventy two.