IMPROVEMENTS IN THE CONSTRUCTION OF SHIPS, BOILERS, GIRDERS, TANKS, GASOMETERS, OTHER LIKE STRUCTURES OR VESSELS."
Year: 1854

page_text: LETTERS PATENT to Joseph-Horton,-of-the-Parish of Shoreditch, Boiler.
Maker, and Richard Jenkin Polglase, of the Parish of Stepney, both in
the County of Middlesex, Engineer, for the Invention of "IMPROVEMENTS
IN THE CONSTRUCTION OF SHIPS, BOILERS, GIRDERS, TANKS, GASOMETERS,
OTHER LIKE STRUCTURES OR VESSELS."
PROVISIONAL SPECIFICATION: left by the said Joseph Horton and
Richard Jenkin Polglase at the Office of the Commissioners, of Patents;
> with their Petition, on the 20th March 1854.
Y
*
Esal
We, JOSEPH HORTON, of the Parish of Shoreditch, Boiler Maker, and
RICHARD JENKIN POLGLASE, of the Parish of Stepney, both in the County of
Middlesex, Engineer, do hereby declare the nature of the said Invention for
IMPROVEMENTS IN THE CONSTRUCTION OF SHIPS, BOILERS, GIRDERS, TANKS,
GASOMETERS, AND OTHER LIKE STRUCTURES OR VESSELS," to be as follows:
13
.:
Our said Invention consists in giving a peculiar form to iron plates, by the
employment of which we are enabled to construct vessels, boilers, and other
like structures capable of bearing a greater strain, without rupture, than could
be sustained by similar structures manufactured with ordinary boiler plates.
The figure of our improved iron plate or boiler plate would be represented
by taking a plate measuring two feet by two feet, with its surface marked into

page_text: four equal portions of one foot square each, and then cutting away one square
foot, thus leaving a plate of only three feet superficial measurement. In
like manner if a plate measuring three feet by two feet be marked out into
two rows of 3 squares each, measuring one foot each, then if two of those
squares adjoining be cut away from one of the rows of three squares, the
remaining plate will also be of a suitable figure for our purpose.
But we do not limit ourselves to these or any other dimensions of plates, or
of the portions cut away, or to any particular figure thereof, so long as the
object desired to be attained is effected, which is, to vary the strain on each
plate in vessels, boilers, and other like structures or articles constructed of plate
iron and rivetted. By our said improvement not only do we avoid the usual
continuous lines of rivetting, but we also, in the longitudinal strain and the
transverse strain, divide such strain by the solid intervening plate in a manner
that cannot be obtained when plates of the usual parallelogramic figure are
emploved
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph Horton and Richard Jenkin Polglase in the Great
Seal Patent Office on the 18th September 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOSEPH
HORTON, of the Parish of Shoreditch, Boiler Maker, and RICHARD JENKIN
POLGLASE, of the Parish of Stepney, both in the County of Middlesex,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twentieth day of March, in the year of our
Lord One thousand eight hundred and fifty-four, in the seventeenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Joseph Horton and Richard Jenkin Polglase, Her special licence that
we, the said Joseph Horton and Richard Jenkin. Polglase, our executors,
administrators, and assigns, or such others as we, the said Joseph Horton
and Richard Jenkin Polglase, our 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 CONSTRUCTION OF SHIPS, BOILERS, GIRDERS, TANKS,
GASOMETERS, AND OTHER LIKE STRUCTURES OR VESSELS," upon the condition

page_text: (amongst others) that we, the said Joseph Horton and Richard Jenkin
Polglase, by an instrument in writing under our hands and seals, 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 we, the said Joseph Horton and Richard. Jenkin
Polglase, do hereby declare the nature of our 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 :-
Our said Invention consists in giving a peculiar form to iron plates; usually
called "boiler plates," by the employment of which plates we are enabled to
construct vessels, boilers, houses, and other like structures capable of bearing
a greater strain, without rupturing the seams, than. could be sustained by
similar structures manufactured with ordinary boiler plates.
For the better understanding of our said improvements we shall now
proceed to describe the Drawings hereunto annexed, in which the same letters

page_text: those squares adjoining be cut-away from one of the rows of three squares the
remaining plate. will also be of a suitable:figure for our purpose..;
But we would here observe that we do not limit ourselves to these or any
other dimensions of iron plates, or of the portions cut away; so long as the
object desired to be attained by our said Invention is effected, which is, to
vary the strain on each plate in vessels, boilers, and other like structures or
articles constructed of plate iron and rivetted. By our said improvements we
not only avoid the usual continuous straight lines of rivetting, but we also in
the longitudinal strain and in the transverse strain divide such strain by inter-
posing a portion of solid plate in a manner that cannot be obtained when
plates of the usual parallelogramic figure are employed. And we do declare
that what we claim as our Invention is, namely, the peculiar form of six-edged
boiler plates, or iron plates, as described.
In witness whereof, we, the said Joseph "Horton and Richard Jenkin
Polglase, have hereunto set our hands and seals, this Eighteenth day
of September, in the year of our Lord 1854.
JOSEPH HORTON.
T
(L.S.)