IMPROVE- MENTS APPLICABLE TO STEAM GENERATORS
Year: 1853

page_text: LETTERS PATENT to George Augustus Huddart, of Brynkir, in the
County of Caernarvon, Esquire, for the Invention of "IMPROVE-
MENTS APPLICABLE TO STEAM GENERATORS."
Sealed the 21st June 1853, and dated the 12th January 1853.
PROVISIONAL SPECIFICATION left by the said George Augustus
Huddart at the Oflice of the Commissioners of Patents, with his.
Petition, on the 12th January 1853.
I, GEORGE AUGUSTUS HUDDART, do hereby declare the nature of the
said Invention for "IMPROVEMENTS APPLICABLE TO STEAM GENERATORS " to
be as follows :-
The object of this Invention is to expedite the operation of generating.
steam in steam boilers by assisting the globules of steam to rise to the..
surface of the heated water, and also to present continually a fresh sur-
face of water to the heated surfaces of the boiler.
For this purpose I propose to apply to such boilers an apparatus..
which shall have the effect of mechanically agitating the water while
subjected to the heat of the furnace, and of opening up a way for the "
passage upwards of the steam through the body of the water im-
mediately it is generated.

page_text: One means of attaining this object is by mounting in the water space
of the boiler a fan or blade, by the rotation of which an ascending and
descending current will be maintained. Or, instead of this, a pump
may be employed for drawing out the water at one level, and injecting
it into the boiler at a lower level. By either of these means a con-
tinuous circulation may be kept up, which will greatly facilitate the
passage of the steam through the superincumbent water to the steam
chamber.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said George Augustus Huddart in the Great Seal
Patent Office on the 12th July 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
GEORGE AUGUSTUS HUDDART, of Brynkir, in the County of Caernarvon
Esquire, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twelfth day of January,' in the
year of
our Lord One thousand eight hundred and fifty-three, in the sixteenth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said George Augustus Huddart, Her special license
that I, the said George Augustus Huddart, my executors, adñiors,
and assigns, or such others as I, the said George Augustus
Huddart, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Irelarid, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS APPLICABLE TO STEAM GENERATORS," upon the condition
(amongst others) that I, the said George Augustus Huddart, by an
instrument in writing under my hand and seal, should particularly
describe and ascertain the. nature of the said Invention, and in what.
manner the same was to be performed, and cause the same to be filed.
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
:

page_text: NOW KNOW YE, that I, the said George Augustus Huddart, do
hereby declare the nature of my said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement, reference being had to the Drawing
hereunto annexed, and to the letters and figures marked thereon (that
is to say):
The object of this Invention is to expediture the operation of gene-
rating steam in steam boilers, by assisting the globules of steam which
rise through the superincumbent water by reason of their specific gravity.
to escape from the body of water in which they are confined as soon as
they are formed, and also by bringing continually a fresh surface of
water into contact with the heating surfaces of the boiler.
These results I obtain by the use of a rotating agitating apparatus,
hereafter described, set within the boiler, and worked by motive power;
or I employ a pump which will draw out water from the boiler at a high
level, and force it back into the boiler at a lower level. The ascending
current in this instance, and the mechanical agitation of the rotating ap-
paratus, will in like manner impel the globules of steam upwards as
soon as they are formed, and thereby expedite the evaporation of the
water, while at the same time the action of "flushing" which is, caused
by the water being surcharged with steam will be avoided.
In the accompanying Drawing the means which I prefer to employ
for mechanically agitating the water in steam boilers is shewn in
several views. Fig. 1, is a partial vertical section of a tubular boiler,
the tubes of which are set vertically; and Fig. 2, is a partial plan view
of the same.
a, a, are tubes connecting together the upper and lower
parts of the boiler, and through these tubes the water circulates from
the lower to the upper water space. These tubes are set in the fire
chamber, and are secured at top and bottom in the usual way to the
boiler plates b, b. In each of thic tubes a, an agitator c, consisting by
preference of curved blades (as shewn at Fig. 2,) is mounted. These
agitators are mounted on axles d, which rest in a step below, and are
maintained erect by passing through bearings of the open frame e.
Keyed to the upper ends of the axles d, are cogged wheels f, which
gear into each other, as shewn. When, therefore, motion is given to

page_text: any one of these wheels by means of a shaft in connection with any
motive power machinery, the whole of the agitators will be made to
rotate, and cause a rapid circulation upwards of the water in the boiler,
and consequently a rapid discharge of steam into the steam chamber.
Having now set forth the nature of my Invention, and the manner
of carrying the same into effect, I wish it to be understood, that under
the above in part recited Letters Patent, I claim as of my Invention of
Improvements applicable to Steam Generators," the means above set
forth for increasing the agitation of the water in steam generators for
the purpose above explained.
In witness whereof, I, the said George Agustus Huddart, have
hereunto set my hand and seal, this Twelfth day of July, in the
year of our Lord One thousand eight hundred and fifty-thirce.
Witness,
J. W. MOFFATT,
"
GEORGE AUGUSTUS HUDDART. (L.S.)
66, Chancery Lane.