IMPROVEMENTS IN THE CONSTRUCTION OF SHIPS AND BOATS
Year: 1853

page_text: LETTERS PATENT to Frederick Lipscombe, of 283, Strand, in the
County of Middlesex, Water Filter Manufacturer, for the Inven-
PROVISIONAL SPECIFICATION left by the said Frederick Lipscombe
at the Office of the Commissioners of Patents, with his Petition,
on the 7th June 1853.
I, FREDERICK LIPSCOMBE, of 233, Strand, in the County of Middlesex,
Water Filter Manufacturer, do hereby declare the nature of the said
Invention for IMPROVEMENTS IN THE CONSTRUCTION OF SHIPS AND BOATS"
to be as follows:--
I construct the submerged portion of a ship's hull of such a shape as
that its longitudinal section will shew at the water line at the anterior
end a sharp point, or nearly so, the inclination from that point being in
a straight line, or nearly so, gradually and uniformly downwards to a
distance not less than nine sixteenths or greater than seven eighths of
the entire length of the submerged portion of the hull. A vessel so

page_text: formed turns aside the water with much greater ease than the present
class of ship, whilst it is elevated to the greatest possible extent as it
passes on its course. The keel is carried down to the required depth
from stem to stern, and the posterior part forming the stern is of the
usual shape.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Frederick Lipscombe in the Great Seal Patent
Office, on the 6th December 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
FREDERICK LIPSCOMBE, of 233, Strand, in the County of Middlesex,
Water Filter Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Seventh day of June, in the year of
our Lord One thousand eight hundred and fifty-three, in the sixteenth
year of Her reign, did, for Herself, ITer heirs and successors, give and
grant unto me, the said Frederick Lipscombe, Her special license
that I, the said Frederick Lipscombe, my executors, administrators,
and assigns, or such others as I, the said Frederick Lipscombe, 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 lawfully might make, usc, exercise,
and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN THE CONSTRUCTION OF SHIPS AND BOATS," upon the condition
(amongst others) that I, the said Frederick Lipscombe, by an instru-
ment 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 immie-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Frederick Lipscombe, 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

page_text: by the following statement, reference being had to the accompanying
Drawings, and to the letters and figures marked thereon, that is to
say:
My said Invention relates to a peculiar construction of the hulls of
boats and ships, whereby the water offers but little comparative resist-
ance to their onward motion, and their buoyancy is increased, in so far
as the peculiar form of the bottom of the hull, which is inclined down-
wards from the stem towards the stern, acts as an inclined plane to raise
the ship to its greatest possible extent during its progress.
Figure 1, on the accompanying Sheet of Drawings represents a side
elevation of my improved mode of constructing the lmlls of ships and
boats. Figure 2, is a longitudinal section of the same. Figure 3, is a
horizontal section taken along the water line. The keel A, may be
carried down to any required depth from stem to stern, and the form of
the stern may be of the ordinary or any other construction. In midship
section the bottom of the hull may be made flat or partly so, or of any
other convenient shape, and the sides of the submerged portion may be
made cither inclined or curved, as found most desirable. In one or
more longitudinal sections of the hull, however, I incline the fore part of
the hull from the water line at the bows B, B, B, Figure 3, in a
straight line, or nearly so, downwards to a distance not less than nine
sixteenths or greater than forty-nine fiftieths of the entire length of the
submerged portion of the hull. The nearly straight inclined line before
mentioned not exceeding in length one hundredth part of the straight
inclined line added to the length of the straight inclined line. The
stern may or may not commence at C, where the inclined line termi-
nates, as found most desirable. The rudder may be constructed on the
ordinary plan, or it may be so constructed as to be capable of being
raised flush with the bottom of the keel, as in Figure 2, or lowered
below the level of the same, as in Figure 1.
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 I do not
confine or restrict myself to the precise details or arrangements which
I have had occasion to describe or refer to, as many variations may

page_text: be made therefrom without deviating from the principles or main
features of my Invention; but 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,-
First, the system or mode of constructing the submerged portion of
a ship or boat's hull in the manner and for the purpose herein-before
described.
Second, the system or mode of constructing the submerged portion
of a ship or boat's hull so that one or more longitudinal sections thereof
will shew a straight line, or nearly so, descending from the water line
at the bows to a distance not less than nine sixteenths or greater than
forty-nine fifticths of the entire length of the submerged portion of
the hull. The nearly straight inclined line before mentioned having a
deflection or curvature not exceeding in length one hundredth part of
the straight inclined line added to the length of the straight inclined
line.
In witness whereof, I, the said Frederick Lipscombe, have here-
unto set my hand and seal, the Sixth day of December, One
thousand eight hundred and fifty-three.
FRED LIPSCOMBE. (L.S.)