IMPROVEMENTS IN THE MODE OF COVERING AND PROTECTING IRON PLATES FROM THE ACTION OF SEA WATER
Year: 1867

page_text: LETTERS PATENT to John McIntyre, of Jarrow, in the County of Durham,
Ship Builder, for the Invention of "IMPROVEMENTS IN THE MODE OF
COVERING AND PROTECTING IRON PLATES FROM THE ACTION OF SEA WATER."
PROVISIONAL SPECIFICATION left by the said John McIntyre at the
Office of the Commissioners of Patents, with his Petition, on the
22nd August 1867.
I, JOHN MCINTYRE, of Jarrow, in the County of Durham, Ship Builder,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
THE MODE OF COVERING AND PROTECTING IRON PLATES FROM THE ACTION OF SEA
WATER," to be as follows:-
My Invention has for its object the covering with copper, "Muntz's metal,"
zinc, or other electro-positive metal of the bottoms of iron ships and vessels
and other ironwork in order to prevent fouling in sea water, and cousists in
fastening on the sheets of the metal intended to be used for the purpose in the
mode herein-after described.
I fix by means of screws or rivets to the iron plates required to be covered
strips of metal so formed in the cross section as to leave grooves to admit of
the insertion of the sheets of covering metal. The said strips may be placed in
any position along the ship or vessel or other ironwork that may suit the width
of the iron plates used in building the ship or vessel or in manufacturing the

page_text: said ironworks. By means of this arrangement the sheets of metal are confined
at the top and bottom in the grooves of the stripes, and are fastened to the iron
plates by rivets or screws between the strips when required. But the mode
of arranging the strips may be varied.
SPECIFICATION in pursuance of the conditions, of the Letters Patent, filed
by the said John McIntyre in the. Great Seal Patent Office on the
21st February 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
MINTYRE, of Jarrow, in the. County. of Durham, Ship. Builder, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-second day of August, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her-reign,
did, for Herself, Her heirs, and successors, give and grant unto me, the said
John McIntyre, Her special licence that I, the said John McIntyre, my executors,
administrators, and assigns, or such others as 'I, the said John McIntyre, 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, THE MODE OF
COVERING AND, PROTECTING IRON PLATES FROM THE ACTION OF SEA WATER," upon
the condition (amongst others) that I, the said John McIntyre, 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, John McIntyre, do hereby declare
the nature of my said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement,, reference being had to the Drawing hereunto annexed, and to the
letters and figures marked thereon, (that is to say) :-
:-
My Invention of "Improvements in the Mode of Covering and Protecting
Iron Plates from the Action of Sea Water has for its object the covering with
copper, "Muntz's metal," zinc, or other electro-positive metal of the bottoms

page_text: of iron ships and vessels and other ironwork' in order to prevent-fouling in sea
water, and consists in fastening on the sheets of the metal intended to be used
for, the purpose in, the mode, herein-after: described.
al
I fix by means of screws or rivets to the ironi plates required; to be covered
strips of metal so formed in the cross section as to leave grooves, to admit of
the insertion of the sheets, of covering metal. The said strips may be placed
in any position along the ship or vessel or other ironwork that may suit the
width of the iron plates used in building the ship or vessel, or iu manufacturing
the said ironwork. By means of this arrangement the sheets of, metal are
confined at the top and bottom in the grooves of the strips, and are fastened
to the iron plates by rivets or screws between the strips when required. But
the mode of arranging the strips may be varied.
Having thus stated, the nature of the said Invention, I will proceed to
describe. more: particularly ing what, manner, the, same, is to be performed by
reference to the accompanying Drawing, in which Fig. 1 is a longitudinal
elevation, and Fig. 2 a transverse section of some of the iron plates of
a vessel or other ironwork with the metal covering above referred to;
Fig. 3 is a section on a scale of three inches to the foot, shewing the mode
of fastening the sheets of covering metal to the iron skin plating of a ship;
Fig. 4 shews full size the mode of fastening the same at the edges of each
strake of iron skin plating; and Fig. 5 shews the mode of fastening the same
at the middle of each strake.
A, A, are the iron plates required to be covered; B, B, are strips of metal
screwed or otherwise fastened to the iron plates A, A, which strips are so
formed in the cross section as to leave grooves or spaces at C, C, between
portions of the strips B and the iron plates A for the insertion of the sheets of
covering metal D, D, which are thereby confined at the top and bottom;
these sheets of metal D, D, are fastened to the iron plates by means of rivets
or screws E, E, when required. The strips of metal B, B, may be arranged
in the manner represented, or they may be otherwise arranged so long as they
are formed of such a cross section as to admit of the insertion of the sheets of
covering metal in the manner and for the purpose described.
Having thus described the nature of the said Invention, and in what manner
the same is to be performed, I hereby declare that what I claim as of my
Invention is the covering of the bottoms of iron ships and vessels and other
ironwork with copper, Muntz's metal," zinc, or other electro-positive metal
by fastening on the sheets thereof by means of strips of metal of the sectional
form described adapted to receive the sheets and confine them at top and

page_text: bottom, such strips of metal having been previously fixed to the iron plates
required to be covered and protected...
ن
In witness whereof, I, the said John McIntyre, have hereunto set my
hand and seal, the Twentieth day of February, in the year of our
Lord One thousand eight hundred and sixty-eight....
Witness,.
ROBERT LETTUN FIELDS,
Jarrow,
Clerk.
JOHN MCINTYRE. (L.S.)