IMPROVEMENTS IN PRESERVING THE BOTTOMS OF SHIPS PROM THE ATTACKS OF BARNACLES AND OTHER INCRUSTATIONS
Year: 1862

page_text: LETTERS PATENT to James Fortescue Harrison, of Cambridge Square,
Hyde Park, in the County of Middlesex, Esquire, for the Invention of
"IMPROVEMENTS IN PRESERVING THE BOTTOMS OF SHIPS PROM THE ATTACKS OF
BARNACLES AND OTHER INCRUSTATIONS."
Sealed the 25th September 1862, and dated the 28th May 1862.
PROVISIONAL SPECIFICATION left by the said James Fortescue Harrison
at the Office of the Commissioners of Patents, with his Petition, on
the 28th May 1862.
I, JAMES FORTESCUE HARRISON, of Cambridge Square, Hyde Park, in the
County of Middlesex, Esquire, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN PRESERVING THE BOTTOMS OF SHIPS FROM THE
ATTACKS OF BARNACLES AND OTHER INCRUSTATIONS," to be as follows:-
My Invention consists in a new method of preserving the bottoms of ships
and vessels from incrustations by the application of materials not hitherto
used for such purpose. I propose to apply to ships' bottoms white and other
colored enamelling on iron or other metal plates, or slate enamelled; such
enamelled slates or plates are to be affixed to the bottoms of vessels or ships
by marine or other suitable glues, or by the aid of Portland or other cements,
or by screws or other fastenings. The application of these enamelled plates as
described will be found to preserve the bottoms of ships or vessels from the
attacks of barnacles and other incrustations which at present affect them.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said James Fortescue Harrison in the Great Seal Patent Office
on the 28th November 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
FORTESCUE HARRISON, of Cambridge Square, Hyde Park, in the County of
Middlesex, Esquire, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eighth day of May, in the year of our Lord One
thousand eight hundred and sixty-two, in the twenty-fifth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the sail
James Fortescue Harrison, Her special licence that I, the said James Fortescue
Harrison, my executors, administrators, and assigns, or such others as I, the
said James Fortescue Harrison, 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 PRESERVING THE BOTTOMS OF SHIPS FROM THE ATTACKS OF
BARNACLES AND OTHER INCRUSTATIONS," upon the condition (amongst others)
that I, the said James Fortescue Harrison, 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.
NOW KNOW YE, that I, the said James Fortescue Harrison, do hereby
declare the nature of my said Invention, and in what manner the same is to
"be performed, to be particularly described and ascertained in and by the
following statement.
This Invention consists in a new method of preserving the bottoms of ships
and vessels from the attacks of barnacles and other incrustations by the
application of materials not hitherto used for such purpose. In order that
my said Invention may be more completely understood, I will now proceed to
describe the best means I am acquainted with for carrying the same into
practical effect, as follows:-I apply to the bottoms of ships or vessels, plates
or sheets of wrought or cast iron or other metals, or admixtures of metals, or
slates, covered with vitreous glaze or enamel, fused at a high temperature,
or with waterglass, or silicate of soda or potash, which latter may be applied

page_text: either direct to the bottoms of ships, or on plates or slates to be affixed
thereto. These covered sheets or slates are to be affixed to the bottoms of
vessels or ships by aid of marine glue or other suitable glue or adhesive
mixture, or by the aid of Portland cement or other cement, or by screws, rivets,
or other fastenings. The application of these enamelled or vitreous glazed
sheets or plates of metal, or slates, or waterglass, will be found to preserve
the bottoms of ships or vessels from the attacks of barnacles or other incrus-
tations which at present affect them.
Having now described and ascertained the nature of the said Invention
and the manner in which the same is to be performed, I would remark, in
conclusion, that I do not limit myself to the precise details herein expressed,
as the same may obviously be varied or modified without in any way departing
from the principles thereof but what I claim and desire to be secured to mo
by the herein in part recited Letters Patent; are, the improved methods of
covering the bottoms of ships and vessels by means of plates of metal, or slate
coated with a vitreous glaze or an enamel, or coating of waterglass, for the
purpose of preserving such ships from the attacks of barnacles and other
incrustations, but as since the filing of my Provisional Specification, I find
that iron plates covered with enamel are claimed by another party, I do not lay
claim to the use of enamelled iron plates as described, but with this exception
I claim my Invention substantially as herein specified.
In witness whereof I, the said James Fortescue Harrison, have hereunto
set my band and seal, this Twenty-eighth day of November, One thou-
sand eight bundred and sixty-two.
J. FORTESCUE HARRISON. (L.S.)
Witness,
ALEX. PRINCE,
Office for Patents,
4, Trafalger Square,
Charing Cross,