Improvements in Boats.
Year: 1893

page_text: Date of Application, 28th Apr., 1893
Complete Specification Left, 28th Feb., 1894-Accepted, 28th Apr., 1894
PROVISIONAL SPECIFICATION.
Improvements in Boats.
I, RICHARD ROPER, of Palace Chambers, 9 Bridge Street, Westminster,
in the County of Middlesex, Marine Contractor and Engineer, do hereby
declare the nature of this invention to be as follows:-
This invention relates to an improved means of increasing the buoyancy of boats
of all descriptions but more particularly life boats.
In carrying this invention into practical effect I construct a boat preferably of
sheet metal having two or more keels. Between these keels I attach a number
of plates so as to form with the plates forming the bottom of the boat an air tight
space between each adjacent pair of keels. These spaces are bounded at their sides
by keels, at the top by the bottom of the boat and at the lower side by plates last
referred to. Suitable partitions are inserted to divide these spaces into a number
of air tight compartments so that on the plates being ruptured at any part the loss of
buoyancy is reduced to a minimum. The plates constituting the bottom of the boat
and those for the closing in the spaces between the keels are flanged at their edges
in a direction pointing away from the air tight. compartments or otherwise arranged
so that they may be riveted from the outside.
In some cases the sides and ends of the boat are enveloped by a casing which is
divided into a number of air tight compartments, so that the boat is surrounded on
all sides by air tight compartments.
Dated this 96th day of Ammil 1902
CASTLE SMITH,
Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Boats.
I, RICHARD ROPER, of Palace Chambers, 9 Bridge Street, Westminster,
in the County of Middlesex, Marine Contractor and Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
This invention relates to an improved means of increasing the buoyancy of boats
of all descriptions but more particularly life boats.
In carrying this invention into practical effect I construct a boat preferably of
sheet metal or other material having two or more keels. Between these keels I
attach a number of plates so as to form with the plates forming the bottom of the
boat an air tight space between each adjacent pair of keels. These spaces are
bounded at their sides by keels, or where they occur at the sides of the boat partly
by keels and partly by the sides of the boat, at the top by the bottom of the boat
and at the lower side by plates last referred to. Suitable partitions are inserted
to divide these spaces into a number of air tight compartments so that on the plates
being ruptured at any part the loss of buoyancy is reduced to a minimum.
In some
cases the sides and ends of the boat are enveloped by a casing which is divided into
a number of air tight compartments, so that the boat is surrounded on all sides by
air tight compartments.

page_text: And in order that my invention may be more fully understood and carried into
practice I will now proceed to describe the same with reference to the accom-
panying drawings, of which
and
Fig. 1 is a transverse section of a boat constructed according to my invention,
Fig. 2 a similar section of a slightly modified form thereof.
The boat is constructed preferably of sheet metal and has two or more keels a
between which are attached the plates 6 thus forming in combination with plates c
forming the bottom of the boat, air tight spaces d.
These air tight spaces may be subdivided into any number of air compartments
when found desirable by longitudinal or transverse division plates so that should
any of the plates forming these compartments be ruptured this would only affect
the buoyancy of the boat to a slight extent.
In order to further increase the outside buoyancy of the boats and reduce their
tendency to roll, the sides e may be enveloped in a casing so forming air tight
compartments g along each out side of the boat, said casings and the sides of the
boat being braced together and strengthened by stay plates which also subdivide
the air compartments.
A central air compartment may be formed along the middle of the boat by
securing to the bottom thereof, plates g¹ connected together at their upper ends by
plate ¹.
The plates 6 constituting the bottom of the boat and those for the closing in the
spaces between the keels are flanged at their edges in a direction pointing away
from the air tight compartments or otherwise arranged so that they may be
rivetted from the outside.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. Boats provided with two or more keels connected by plates so as to form air
compartments, substantially as and for the purpose herein before described and
illustrated in the accompanying drawings..
2. Boats constructed, substantially as described and illustrated in the accom-
panying drawings.
تيمم
1
CASTLE SMITH,
"Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.