CERTAIN IMPROVEMENTS ON AND ADDITIONS TO BOILERS OR APPARATUS FOR PRODUCING MOTIVE POWER
Year: 1835

page_text: SOME, 1,
WILLIAM
TO ALL TO WHOM HESE PRESENTS SHALL
HALE, of Colchester, in the County of Essex, Civil Engineer, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date
at Westminster, the Eleventh day of March, in the fifth year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
William Hale, His especial licence, full power, sole privilege and authority,
that I, the said William Hale, my exors, admiors, and assigns, or such
others as I, the said William Hale, my exors, adññors, 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, my Invention of "CERTAIN IMPROVEMENTS ON AND ADDITIONS TO
BOILERS OR APPARATUS FOR PRODUCING MOTIVE POWER;" in which said Letters
Patent is contained a proviso that I, the said William Hale, shall cause
a particular description of the nature of my said Invention, and in what
manner the same is to be performed, to be inrolled in His said Majesty's
High Court of Chancery within six calendar months next and immediately
after the date of the said in part recited Letters Patent, as in and by the
same, reference being thereunto had, will more fully and at large appear.
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,
and in what manner the same is to be performed, are particularly described
and ascertained in and by the following description the reof, reference being

page_text: had to the Drawing hereunto annexed, and to the figures and letters marked
thereon, that is to say:-
My Invention consists in the combination and arrangement of a boiler or
apparatus composed of two cylinders, one within the other, the outer one sta-
tionary and the inner one free to move on its axis or centre; the inner cylinder,
which may be called a drum, is so much less in diameter than the outer, that
there shall be a small space, say one quarter of an inch all round, between the
two cylinders. The space between the cylinders is what I term a channel or
water-course, whereby water or any other fluid may freely pass. I call the fluid in
the channel or watercourse a fluid band or strap, in consequence of the motion
of the water acting on the inner cylinder in like manner to a driving band,
causing it to revolve. The water or fluid when put in motion in the channel,
as hereafter described, must not be suffered to escape endways, and may be
prevented by a narrow metallic ring or packing fitted into a groove in the
cover of the outer cylinder, with elastic springs between the ring and the cover
pressing it against the ends of the drum or inner cylinder, keeping it sufliciently
fluid-tight without putting much friction upon the revolving cylinder, or the
ends may be make water-tight by any other known and convenient mode that
will answer the same purpose. Apertures are made in the outer cylinder near
a stop or bridge piece, which stop is made fast to the outer cylinder, and is
fitted in between the two cylinders the whole length of the drum, and is for
the purpose of giving one direction to the motion of the fluid band; this bridge
piece may be made to press upon the drum by springs in the same way as the
rings in the cylinder ends; there is also an aperture or apertures in the same
cylinder on the opposite side of the stop or bridge piece. Through the
apertures on one side of the bridge piece the water or fluid is admitted to keep
up the supply of the fluid band, and it escapes from the apertures on the
opposite side of the bridge piece. The water or fluid between the cylinders,
when put in motion, will cause the inner cylinder or drum to revolve upon its
axis, in consequence of the friction along the channel and the centripetal force
from the sides of the outer cylinder reflecting upon the drum or inner cylinder
which is free to move. The stationary cylinder has ends or covers bolted on
water-tight, and the axis of the revolving cylinder passes through one of the
covers of the outer cylinder in a stuffing box, to which axis or shaft any
machinery required to be driven may be connected, and the opposite end of
the axis may work on a centre screwed into the opposite cover, or on any other
convenient bearing.
The following is a description of the Drawings, in which the apparatus is
more particularly ascertained, the same letters referring to the same parts in
all the Figures, that is to say:-

page_text: Figure 1 is a transverse section, Figure 2 a longitudinal section of the
apparatus. A is the inner cylinder or drum; B, B, the outer or stationary
cylinder; c, the axis; d, d, the channel or water-course; e, the stop; F, pipes
for feeding or supplying the water or fluid band; G, the pipes for the escape
of the fluid. If the space between the two cylinders is filled with water, and
fire is applied to the outer cylinder in the way shown by the Drawing, H
represents the fire, and k, k, the fire flue, the water will be put in motion and
give action, and consequently power to the inner cylinder or drum in the
direction of the arrow; and this motion may be kept up by constantly cooling
or condensing the water or steam from the pipes G in a cooler or condenser,
and when cooled or condensed, may be conveyed back by a pipe or pipes to the
feed pipe F, to be again heated, and thus expansion and condensation is con-
tinued, whereby motion, and consequently power, will be communicated to the
drum or inner cylinder, which may be employed as described.
Although I have named fire as the primary agent to give motion to the fluid
band, I do not confine myself to that alone, but I claim also the right of using
pumps or a head of water, or any other known and convenient method of
forcing fluids that will effect the purpose of giving motion to the fluid band;
and it will be evident that it is not essential that the two parts should be
cylindrical, though it is desirable so to do, but it may be constructed as shown
at Fig. 3, where the fluid band travels spirally round a conical surface.
In witness whereof, I, the said William Hale, have hereunto set my
hand and seal, this Eleventh day of September, in the year of our Lord
One thousand eight hundred and thirty-five.
Inrolled the Eleventh day of September, in the year of our Lord One
thousand eight hundred and thirty-five.