ANIMPROVED PADDLE WHEEL to be as follows
Year: 1884

page_text: I, JOSEPH BOSTOCK ELLISON Shipping butcher 18 Carter St, Toxteth Park
Liverpool do hereby déclare the nature of my invention for AN "IMPROVED
PADDLE WHEEL to be as follows:-
"
In place of the flat blade or float now in use, I propose a number of smaller ones,
fixed in a line at right angles to each other so as to form a series of troughs or
scoops, as in illustration appendid.
This I submit is an improvement, which by demonstration promises a threefold
advantage.
1. To grip or bite the water far more effectively than a flat blade can do.
2. That in only resisting revolution when exercising a propelling influence upon
the vessel, & gliding easily through the water when the floats are ascending &
descending, all the motive power is ütilized for propelling purposes alone.
3. By the complete prevention of back-water throwing, through the escapement
provided for this purpose at the back of each pair of floats.
There would thus be no engine power wasted or mis-applied, & this plan I
estimate would ensure a gain in speed, with the same coal consumption, of
something like 30 pr cent over either the present wheel or screw propellors.
Figure 1 in illustration represents the side view of paddle-wheel.
Figure represents the front view of a section of paddle wheel.
Each figure shews the position of proposed improved manner of fixing the floats,
which are lettered (a) & placed so as to act in pairs, each pair. forming a trough or
scoop to grip the water effectively, while the spent water escapes by the vent space
at the back of each pair of floats: such space being lettered (6) on each figure.
The illustrations also shew that these paddle wheels will revolve either way
with almost equal effect.
םעTAC
POSTOCK TITION
Declared, Jany. 21st 1884.
Re-declared, March 11th 1884.
Before T. S. RAFFLES, Esq., J.P.,
Stipendiary at L'pool.

page_text: I, JOSEPH BOSTOCK ELLISON, Family and Shipping Butcher, of 18 Carter Street,
Toxteth Park, in the City of Liverpool, do hereby declare the nature of my said
invention for "AN IMPROVED PADDLE WHEEL "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 this invention is to provide a fixed float paddle wheel which will
exert more effective force in propelling a vessel than any existing wheel, and at the
same time will offer less resistance in its passage through the air and when entering
and leaving the water than those at present in use.
It consists essentially in adopting the principle of the water wheel with
ventilating buckets in a modified form to paddle wheels. It has long been known
that a paddle in the form of a bucket or trough, a concave float in fact, will have a
greater hold on the water than a flat float, but this advantage is neutralized by the
loss entailed through the concavity raising water with it and letting it fall again
uselessly. This defect I remedy by the provision of an escapement for the spent
water. Again if a paddle wheel could dip into the water, exert a pressure against
the water, and then pass that water, and exert pressure against. a fresh body of
water, far more useful effect ought to be produced than by acting with the float
against one body of water, and practically shoving that body along with it or
pushing it out of the way.
In carrying out my invention, I form my float of a number of smaller floats, these
are supported in suitable framework and are placed approximately at right angles
with each other with a space between each where they converge, thus forming a
series of buckets with a vent space at the back.
It is best described by aid of the accompanying drawings in which :-
Figure 1 is an elevation of a paddle wheel constructed according to my invention,
and
Figure 2 a transverse section of same.
In these A is the boss or hub of the wheel, B tie rods supporting the wheel,
C the framework of the wheel, D the floats. The floats D are placed as shewn in
somewhat of a zig-zag manner, each adjacent one being approximately at right
angles to its fellow. These floats are fixed to the framework C in any suitable
manner, but I prefer to use angle irons d to which the ends of the floats are
riveted, as I also prefer metal floats as they can be made thinner than wood,
though wooden floats may of course be used, if desired. I do not bring the two
converging floats together, but leave a space at the point e. It will be clearly seen
from the drawing that each paddle of the wheel is found in a series of buckets with
a vent, or ventilated at the back. When in operation these buckets effectively grip
the water and at the same time offer but little useless resistance when entering or
leaving the water, or during their passage through the air when not submerged.
The spent water, as the wheel moves, on passes out at the vent e and little or no
back wash is formed. The wheel will move with almost equal effect in either
direction. It will be seen at once that especially where the floatlets are made of
'metal, they are not bound to be flat surfaces, but that curved surfaced floats could
be used, I prefer however flat surfaces, as shown. Furthermore, the vacuum
created by the passage of ordinary floats through the water, being essentially
reduced by mine, the floats or sets of floats, can be placed much closer together than
hitherto, thus increasing the effective power of each revolution of the wheel, and at
the same time decreasing the strain upon the floats.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
1st. A paddle wheel in which the paddles consist of a series of concavities or
buckets, ventilated or formed with a vent or opening at the back of each,
permitting a portion of the water to pass through, substantially for the purposes
described.
2nd. A paddle wheel, the paddles of which are constructed of a series of floats,
the adjacent ones converging together at an angle (approximately a right angle)
with a vacant space between the converging floats, substantially as and for the
purposes described.