A MACHINE OR METHOD OF RAISING OR FORCING WATER FOR PROPELLING VESSELS, WHICH MACHINE OR METHOD IS ALSO APPLICABLE TO OTHER PURPOSES
Year: 1830

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HALE, of Colchester, in the County of Essex, Machinist, send greeting.
WHEREAS His late most Excellent Majesty King George the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Twelfth day of January, in the tenth year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
William Hale, His especial licence that I, the said William Hale, my exors,
admors, and assigns, or such others as I, the said William Hale, my exors,
admors, or assigns, should at any time agree with, and no others, from time to
time and at all times during the term of years therein expressed, should and
lawfully might make, use, exercise, and vend, within England, Wales, and the
Town of Berwick-upon-Tweed, and also in all His Majesty's Colonies and Plan-
tations abroad, my Invention of "A MACHINE OR METHOD OF RAISING OR FORCING
WATER FOR PROPELLING VESSELS, WHICH MACHINE OR METHOD IS ALSO APPLICABLE
TO OTHER PURPOSES;" in which said Letters Patent is contained a proviso obliging
me, the said William Hale, by an instrument in writing under my hand and
seal, particularly to describe and ascertain the nature of my said Invention,
and in what manner the same is to be performed, and to cause the same
to be inrolled in His Majesty's High Court of Chancery within six calendar
months next and immediately after the date of the said recited Letters Patent,
as in and by the same; reference being thereunto had, will more fully and at
large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
William Hale, do hereby declare that the nature of my said Invention consists
in a vertical or horizontal air-tight paddle box, kept constantly supplied with
water, and the sides of which, by means of a paddle wheel or propeller turning
in the said water, are forcibly acted upon at all points, except at an aperture
where the said water escapes, and where the resistance offered to the action of
the said water is less than at the other parts of the paddle box; wherefore the
boat or other body to which the said paddle box is attached will be propelled
in a-direction from the said aperture. And in further compliance with the
said proviso, I, the said William Hale, do hereby describe the manner in-
which my said Invention is to be performed, by the following description
thereof, reference being had to the Drawing annexed, and to the figures and
letters marked thereon, that is to say: -
DESCRIPTION OF THE DRAWING.
The propeller which gives motion to the water in this machine is composed.
of one or more curved paddles, and set at an angle to prevent any vacuum
behind them, revolving at the extremity of spokes or arms round on an axis
nearly in the middle-of-the-machine. The dimensions of these surfaces vary
according to their number, and the area of the aperture through which the
water is discharged; that is, if the propeller has one paddle only, the area of
that surface must be equal to the area of the aperture; if two are used, the..
area of each must be equal to half the area of the aperture; if four; then each
must be equal to one fourth of the area of the aperture, and so on,.t that what-
ever the number of paddles may be, the area of the whole must be equal to the
area of the discharging aperture...
Figure 1 is a section of the machine, with an horizontal paddle-box, and-a-
propeller having curved paddles. A, A, B, B, represent the sides of an air-
tight paddle box in which the propeller acts; a,.the center, and b, b, b, b, the
arms of the propeller. c, c, c; c, are paddles securely attached to the arms, and
which act upon the water in an eccentric curve, the eccentricity of each being
measured by the dotted line Y, and equal to one fourth of the aperture x.
The tangent h, drawn-from-the inner to the outer circle, is the measure of the
distances of the eccentric-curves from each other. The sides of the aforesaid
paddle box A, A, B, B, must-be struck from a different centre to that on
which the arms: turn, so that the circle described from each meeting at the
point S may. so diverge that their distance apart at I, the opposite point from
S, may be equal to twice the distance of the eccentric space Y, leaving, how
ever, an aperture at x equal to the sum of the spaces measured by the

page_text: eccentric curves. The water upon which the propeller acts is admitted into
the receiver through apertures within the inner circle d, d, d, d; these aper-
tures to be of such dimensions that during the rotary motion of the propeller
the paddle box may remain constantly full. This Figure represents a hori-
zontal machine, to be placed in the bottom of a vessel, when, if the arms are
turned in the direction of the arrow, the vessel will be propelled in a direction
from S to W.
Figure 2 represents a propeller with four plain or straight paddles, each
being, as before observed, equal to one fourth of the aperture x in Figure 1.
Figure 3 represents a horizontal machine with two discharging apertures
at A and B.
Figure 4 is a vertical machine, with one discharging aperture at C.
Either of these positions may be adopted with like effect as circumstances
may require, the principle of action in both being the same.
With reference to the application of my said Invention to propelling vessels,
I should observe, first, with respect to the horizontal machine, that it should
be placed near the bottom of the vessel, about the midships, with the discharging
apertures opening at the stern, a firm flooring having been first made to suit
the figure of the machine. And with regard to the vertical machine, when
applied to propelling vessels, it will be necessary to have two machines,
situate, as before described, near the midships, one on each side of the keel,
with the discharging apertures leading out at the stern, and fixed exactly fore
and aft, so that the water is freely discharged in lines parallel with the keel.
The dotted lines a show the extent and direction of the supply pipe with the
opening r into the receiver. The end W is left open, intended to go through
the ship's bottom, of a capacity to admit a sufficient quantity of water for
the full action of the propeller. In large machines it will be better to have
two supply pipes, one on each end of both machines.
Now whereas I claim as my Invention the machine herein-before described,
whether applied vertically to raise water, or horizontally to force water, for the
purpose of propelling vessels or for other purposes. And such my Invention
being, to the best of my knowledge and belief, entirely new, and never before
used within that part of His said Majesty's United Kingdom of Great Britain
and Ireland called England, His said Dominion of Wales, or Town of
Berwick-upon-Tweed, nor in any of His Majesty's Colonies and Planta-
tions abroad, I do hereby declare this to be my Specification of the same,
and that I do verily believe this my said Specification doth comply in all
respects, fully and without reserve or disguise, with the said proviso in the

page_text: said herein-before in part recited Letters Patent contained; wherefore I do
hereby claim to maintain exclusive right and privilege to my said Invention.
In witness whereof, I, the said William Hale, have hereunto set my
hand and seal, this Twelfth day of July, in the year of our Lord
One thousand eight hundred and thirty.
year
... WILLIAM (L.B.) HALE.
AND BE IT REMEMBERED, that on the Twelfth day of July, in
the of our Lord 1880, the aforesaid William-Hale came before our said
Lord the King in His Chancery, and acknowledged the Specification afore-
said, and all and every thing therein contained and specified, in form above
written. And also, the Specification aforesaid was stamped according to the
tenor of the Statute-made for that purpose.,
Inrolled the Twelfth day of July, in the year of our Lord One thousand
eight hundred and thirty.
T.
..3,