Improvements in Paddle Wheels for Ships and other similar Vessels.
Year: 1888

page_text: Date of Application, 21st Nov., 1888
Complete Specification Left. 19th Aug.. 1889-Accepted, 21st Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Paddle Wheels for Ships and other similar
Vessels.
I JAMES GREEN of 10 Milner Street Islington in the County of Middlesex-
Carpenter do hereby declare the nature of this invention to be as follows:-
My Invention relates to Improvements in Paddle Wheels for Ships and other
similar Vessels and has for its object to produce a more powerful wheel having a
better grip on the water than the wheels hitherto constructed. According to my
Invention I mount on a Shaft a hexagonal hub piece of iron or other suitable
material and I fix in any convenient manner on each side or face of this hexagon a
blade paddle or float of wood or other material so that the inner end of each blade
may coincide with one of the angles of the hexagon, the blades following each other
consecutively.
HUGHES, SON & Co.,
38, Chancery Lane, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Paddle Wheels for Ships and other similar
Vessels.
I, JAMES GREEN, of No. 10 Milner Street, Islington, in the County of Middlesex,
Carpenter, 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:―
My Invention relates to improvements in paddle wheels for propelling ships or
other vessels and for other similar purposes, and has for its object to produce a
more powerful paddle wheel having a better grip on the water than the wheels
hitherto ordinarily constructed.
In order that my Invention may be the better understood I have appended the
accompanying explanatory three sheets of drawings in which Figure 1 is an end
elevation of the stern of a vessel having my improved paddle wheels adapted
thereto. Figure 2 represents a detached elevation of my improved paddle wheel, and
Figures 3 and 4 plan views of a vessel showing the position the paddle wheels may
assume when in use.
In carrying out my Invention, I mount on an ordinary crank shaft in the usual
manner a hexagonal hub piece or boss A of iron or other suitable material. The
inner butt ends of the blades or floats B are secured to the angled faces or sides of
the hexagonal hub or boss A by bolting or otherwise; or, if preferred, the blades or
floats B and the hub or boss A may be cast in one piece. The direction in which
the paddle wheel rotates, under ordinary circumstances, is indicated by the arrows
Figure 2.
From the above it will be obvious that a paddle wheel constructed in accordance
with my Invention possesses important advantages over those ordinarily constructed
wherein the blades or floats are formed at right angles to the axis of the hub or boss,
inasmuch as, when in action, the blades work independently of one another, that is to
say the eddy created by one blade in its travel through the water does not in any way
come in contact, or interfere with the free action on the water of the following blade
or float; and further the blades or floats, owing to the position at which they are set
relatively to the hub or boss, after completing their work offer very little resistance
when leaving the water and carry less water round with them, in the paddle box, than

page_text: ordinarily is the case. When the engines are reversed, it will be seen, that a greater
resistance is offered to the onward progress of the vessel, thus enabling the latter to
be stopped in a very short space of time.
I do not confine myself to the employment of any particular number of blades or
floats nor do I limit myself to the exact form of the hub herein specified and shown,
as, instead of being hexagonal it may be of any other convenient shape, the sides or
faces agreeing in number with the blades or floats employed.
The position which the paddles may assume, when in use, is shown Figures 3
and 4. In Figure 3 the paddles B which are carried on the shaft a are disposed
centrally amidships within recesses or chambers C formed for their reception in the
body of the vessel as shown. In Figure 4 the paddles B are placed within recesses
or chambers Cat the stern of the vessel (shown also in Figure 1) the paddles being
mounted on the crank shaft a and work one at the side of the other in a manner
somewhat similar to that which applies in the case of an ordinary twin screw vessel,
the eddy created by said wheels, when in action, passing to the rear of the
vessel without in any way interfering with the free manipulation of the rudder of
the vessel.
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 :-
The improvements in paddle wheels for ships and other similar vessels, substantially
as herein described and shown in the accompanying drawings.
Dated this 19th day of August 1889
JAMES STEVENSON,
20, High Holborn, London, W.C., Agent for Applicant.
JAMES
STEVENSON,
20, High Holborn, London, W.C., Agent for Applicant.