IMPROVEMENTS IN COATING THE BOTTOMS AND OTHER PARTS OF SHIPS AND VESSELS, IN ORDER CONTACT THED THE
Year: 1852

page_text: LETTERS PATENT to Robert Mortimer Glover, of Newcastle upon
Tyne, M.D., for the Invention of "IMPROVEMENTS IN COATING
THE BOTTOMS AND OTHER PARTS OF SHIPS AND VESSELS, IN ORDER
CONTACT THED THE "
Sealed the 17th May 1853, and dated the 24th November 1852.
PROVISIONAL SPECIFICATION left by the said Robert Mortimer
Glover at the Office of the Commissioners of Patents, with his
Petition, on the 24th November 1852.
I, ROBERT MORTIMER GLOVER, of Newcastle upon Tyne, M. D., do
hereby declare the nature of the said Invention for "IMPROVEMENTS
IN COATING THE BOTTOMS AND OTHER PARTS OF SHIPS AND VESSELS, IN ORDER
TO PREVENT AXIAL AND VEGETABLE GROWTH IN CONTACT THEREWITH," to be
as follows:-
This Invention consists in preparing paints or varnishes ap-
plicable to the coating of the bottoms and other parts of ships and
vessels, by employing arsenite or arseniate of lead, with or without
the addition of the red or yellow sulphurets of arsenic and arsenite
of copper.

page_text: SPECIFICATION in pursuance of the conditions of the Letters
Patent, filed by the said Robert Mortimer Glover in the Great
Seal Patent Office on the 24th May 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
ROBERT MORTIMER GLOVER, of Newcastle upon Tyne, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent bearing date the Twenty-fourth day of November,
in the year of our Lord One thousand eight hundred and fifty-two,
in the sixteenth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Robert Mortimer
Glover, Her special licence that I, the said Robert Mortimer Glover,
my executors, administrators, and assigns, or such others as I, the
said Robert Mortimer Glover, 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 "IMPROVEMENTS IN
COATING THE BOTTOMS AND OTHER PARTS OF SHIPS AND VESSELS, IN ORDER TO
PREVENT ANIMAL AND VEGETABLE GROWTH IN CONTACT THEREWITH," upon the
condition (amongst others) that I, the said Robert Mortimer Glover,
by an instrument in writing under my hand and seal, should par-
ticularly 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.
NOW KNOW YE, that I, the said Robert Mortimer Glover, do
hereby declare the nature of the said Invention, and in what manner
the same is to be performed, to be particularly described and ascer
tained in and by the following statement thereof (that is to say):
The Invention consists.in preparing paints or varnishes applicable
to the coating of the bottoms and other parts of ships and vessels,
by employing arsenite or arseniate of lead, with or without the

page_text: addition of the red or yellow suiphurets of arsenic. The substances
which I prefer to use for mixing with the arsenite or arseniate of
lead are the arsenite of copper, and the red and yellow sulphurets
of arsenic, commonly called realgar and orpiment. These may be
combined in different proportions; but the proportion which I prefer
is, two parts by weight of arsenite or arseniate of lead, one part of
realgar, one of orpiment, and one of arsenite of copper. There
are other modes of preparing the arsenite or arseniate of lead than
that which I now describe; but in order that the Invention may be
more fully understood, I will describe the means pursued by me.
I dissolve arsenious acid, or arsenic acid, in a boiling solution of
carbonate of soda, and then add to this solution a solution of
nitrate of lead, by which I obtain a precipitate of arsenite or
arseniate of lead, which may be washed with water and then
dried.
The matters are to be mixed, prepared, and applied in like
manner to that pursued when other pigments are used.
Having thus described the nature of my Invention, and the
manner of performing the same, I would have it understood that
what I claim is, the application of arsenite or arseniate of lead in
the manufacture of paints or varnishes, and the combining there-
with of red or yellow sulphurets of arsenic and arsenite of copper.
In witness whereof, I, the said Robert Mortimer Glover, have
hereunto set my hand and seal, this Twenty-first day of
May, One thousand eight hundred and fifty-three.
ROBERT MORTIMER GLOVER. (L.S.)
Witness,
HENRY GRIEVESON,
Newcastle upon Tyne.