IMPROVEMENTS IN " in PROTECTING THE INNER SURFACES OF PROVISIONALATION OR COMPOSITE SHIPS ORSSE
Year: 1874

page_text: LETTERS PATENT to Benjamin Lumsden Thomson, of Gracechurch
Street, in the City of London, for the Invention of "IMPROVEMENTS IN
"
in
PROTECTING THE INNER SURFACES OF
PROVISIONAL SPECIFICATION left by the said Benjamin Lumsden
Thomson at the Office of the Commissioners of Patents, with his
Petition, on the 12th June 1874.
I, BENJAMIN LUMSDEN THOMSON, of Gracechurch Street, in the City
of London, do hereby declare the nature of my said Invention for
"IMPROVEMENTS IN PROTECTING THE INNER SURFACES OF IRON OR COMPOSITE
SHIPS OR VESSELS," to be as follows:-
My Invention relates to the protecting the inner surfaces or skins of
iron or composite ships or vessels from the corrosion or deterioration con-
sequent upon the leakage or drainage from the bilge, various cargoes, or
any other cause, and consists in the employment of thin sheets or plates
of iron or other metal covered with enamel, japan, or other suitable
covering, and coated on their inner sides with an india-rubber or other

page_text: adhesive compound, so as to cause them to adhere to the said surfaces
or skins. Previous to the application of these prepared plates the said
surfaces or skins (or portions thereof) of the vessel are covered with
varnish or other compound, so as to increase the adhesion of the said
plates thereto, and for the more effectual preservation of the iron or 5
material thereof. The edges of these plates are turned down so as to
secure tight joints.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Benjamin Lumsden Thomson in the Great Seal
Patent Office on the 12th December 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, BENJAMIN
LUMSDEN THOMSON, of Gracechurch Street, in the City of London,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twelfth day of June, 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,
give and grant unto me, the said Benjamin Lumsden Thomson, Her
special license that I, the said Benjamin Lumsden Thomson, my
executors, administrators, and assigns, or such others as I, the said
Benjamin Lumsden Thomson, my executors, administrators, or 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 law-
fully 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 PROTECTING THE INNER. SURFACES OF
IRON OR COMPOSITE SHIPS OR VESSELS," upon the condition (amongst others,
that I, the said Benjamin Lumsden Thomson, my executors or admini-
strators, by an instrument in writing under my hand and seal, 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 Benjamin Lumsden Thomson, do
hereby declare the nature of my said Invention, and in what manner

page_text: the same is to be performed, to be particularly described and ascertained
in and by the following statement, that is to say:-
My Invention relates to a mode of protecting the inner surfaces or
skins of iron or composite ships or vessels from the corrosion or deterio-
ration consequent upon leakage or damage from the bilge, various
cargoes, or any other cause, and consists in the employment of thin
sheets or plates of iron or other metal covered with enamel, japan, or
other suitable covering, and coated on their inner sides with an india-
rubber, gutta percha, asphalte, marine glue, rosin, pitch (mixed or not
with sand or other silica), or other adhesive compound, so as to cause
them to adhere to the said surfaces or skins. Previous to the applica-
tion of these prepared platest he inner surfaces or skins or (portions.
thereof) of the vessel are covered with varnish or other compound so
as to increase the adhesion of the said plates thereto, and for the more
effectual preservation of the iron or material thereof. The edges of
these plates are turned down so as to secure tight joints.
Having now described and particularly ascertained the nature of my
said Invention, and the manner in which the same is or may be used or
carried into effect, I would observe in conclusion that what I consider
to be novel and original and therefore claim as the Invention secured
to me by the herein-before in part recited Letters Patent is, the applica-
tion and use of sheets or plates of iron or other metal covered with
enamel or other suitable covering, and coated with an adhesive com-
pound in combination with a coating of varnish or other compound,
to the inner surfaces or skins of iron or composite ships or vessels.
In witness whereof, I, the said Benjamin. Lumsden Thomson, have,
to this my Specification set my hand and seal, the Seventh day
of December One thousand eight hundred and seventy-four.