Improvements in or connected with Rudders for Ships, Boats and other Vessels.
Year: 1896

page_text: Date of Application, 2nd Dec., 1896
Complete Specification Left, 23rd Aug., 1897-Accepted, 2nd Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with Rudders for Ships, Boats and
other Vessels.
I, SAMUEL DURE of 233 Holton Road, Barry Dock, in the County of
Glamorgan, South Wales, Foreman Shipwright, do hereby declare the nature of
this invention to be as follows:-
.The object of my invention is to construct a rudder for ships, boats,
and other vessels, whereby the steering of such vessels is greatly facilitated, and
the turning capabilities of a vessel fitted with my invention are materially
increased, in proportion to the angle through which the rudder has to pass to
effect the steering.
With this object in view I form the rudder blade, so that when seen in
horizontal section, it increases in width towards the rear end (that is, the blade
is tapered in its horizontal section from the steering post to its rear part),
and it is by this construction that I obtain advantages as before stated, in that
by a small motion or deflection of the rudder, a very considerable effect, is produced
in the steering of the vessel with, as will be well understood, many attendant
advantages.
Such a rudder may be composed of a frame consisting of a main forward portion,
from which arms or straps extend in a rearward direction; such arms or straps
extend from either side of the main forward part, those extending from one side
being placed in intermediate positions to those extending from the opposite side.
Steel or other metal plates are secured by rivetting or other means to the
projection arms and the inner faces of these arms are at an angle to one another
so that when the plates are secured thereto, the forward ends of the two plates
are in contact or nearly so. These plates extend rearwardly, the plates diverging
apart to a distance which varies in different cases.
Suitable packing or distancing pieces are placed between the plates in forming
my rudder.
"I connect my rudder to the stern post in any well known manner.

page_text: Improvements in or connected with Rudders for Ships, Boats and
other Vessels.
I, SAMUEL DURE, of 233 Holton Road, Barry Dock, in the County of
Glamorgan, South Wales, Foreman Shipwright, do hereby declare the nature of
this invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement:-
The object of my invention is to construct an improved rudder for ships, boats,
and other vessels, whereby the steering of such vessels is greatly facilitated, and
the turning capabilities of a vessel fitted with my invention are materially
increased in proportion to the angle through which the rudder has to pass to
effect the steering.
With this object in view I form the rudder blade, so that when seen in
horizontal section, it increases in width towards the after part (that is the blade
is tapered in its horizontal section from the main frame of rudder to its after
end) and it is by this construction that I obtain advantages as before stated, in
that by a small motion or deflection of the rudder, a very considerable effect is
produced in the steering of the vessel.
"
With reference to the accompanying drawings, Fig. 1 is a side elevation
illustrating my improved rudder, Fig. 2 is a side elevation with a part of the
plating removed in order to clearly illustrate part of the framework. Fig. 3 is
a cross sectional plan taken upon the line X Y of Fig. 1. Fig. 4 is a similar
sectional plan view taken upon the line X Y of Fig. 2, and Fig. 5 is a horizontal
section shewing a modified construction of rudder.
I construct my improved rudder of any suitable material with a frame, con-
sisting of a main forward piece, or rudder post A, and an after part B, composing
stays and "bow"; the main forward piece A is formed with suitable lugs A¹,
or with other known or approved fittings, in order that the rudder may be held
in position upon the stern post of the vessel, to which the rudder is to be applied;
the after extending part B is shewn as being formed of open framework.
Referring to Figs. 3 and 4 it will be seen that the part B in cross section is
broader at the after portion, than it is at the fore end, and this after part B is
arranged to receive a steel or other metal plate or covering piece C, on each side
thereof, which may be secured upon the part B by rivetting or by other suitable
means. The plates C C when placed in position upon the part B take up a position
at an angle to each other similar to the angle of the sides of the part B, the plates
diverging apart at a distance which varies in different cases. Such a rudder is
or may be connected or hinged to the stern post by any well known means, such
as by the lugs A¹ aforesaid.
In some cases the mechanical construction of the rudder may be varied, thus
at Fig. 5 I have shewn a rudder having a central plate C¹, secured to arms B
extending from the main piece A of the rudder. On to each side of the central.
plate C, I have fixed plates C C as shewn, thereby causing the rudder to taper in
plan view.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim
is:-
1. A rudder for ships, boats, and other vessels, having the sides of same diverging
or extending apart towards the after edge, in such manner, that the rudder is

page_text: of greater thickness at its after edge than at the fore part near the main piece of
the rudder, as set forth.
2. In rudders for ships, boats, and other vessels, the combination with the main
forward piece A, and a suitable framework composing the stays and "bow" B,
extending aft therefrom, of side plates C upon each side of the framework,
arranged and fixed so that the said plates diverge apart towards the after edge
of the rudder, substantially as set forth.
66
3. In rudders for ships, boats, and other vessels, the combination with a main
forward piece A, and means for hinging the said piece to the stern post of the
vessel, of an open frame composing the stays and bow" B extending aft from
the forward piece, the said frame 13 increasing in thickness towards its rear part,
and plates C fixed upon each side of the said open framework, as set forth.
4. In rudders for ships, boats, and other vessels, the combination of the main
forward piece A, arms extending therefrom, a central plate C supported by the
arms, and a main forward piece, a side plate C C secured to each side of the central
plate, and at an angle thereto, whereby the sides of the rudder are caused to
extend apart towards the after edge, as set forth.
Dated this 23rd day of August 1897
BREWER & SON,
London and Leeds, Agents for the Applicant.