CERTAIN IMPROVEMENTS IN THE METHOD OF AND APPARATUS FOR HEATING THE FEED WATER FOR STEAM BOILERS, AND IN EMPLOYING STEAM PRODUCED BY SUCH MEANS
Year: 1861

page_text: LETTERS PATENT to Thomas Wild, of Heywood, in the County of
Lancaster, Cotton Spinner, and Thomas Hodson, of the same Place,
Engineer, for the Invention of "CERTAIN IMPROVEMENTS IN THE METHOD
OF AND APPARATUS FOR HEATING THE FEED WATER FOR STEAM BOILERS,
AND IN EMPLOYING STEAM PRODUCED BY SUCH MEANS."
Sealed the 25th March 1862, and dated the 17th October 1861.
PROVISIONAL SPECIFICATION left by the said Thomas Wild and Thomas
Hodson at the Office of the Commissioners of Patents, with their
Petition, on the 17th October 1861.
We, THOMAS WILD, of Heywood, in the County of Lancaster, Cotton
Spinner, and THOMAS HODSON, of the same Place, Engineer, do hereby
declare the nature of the said Invention for "CERTAIN IMPROVEMENTS IN THE
METHOD OF AND APPARATUS FOR HEATING THE FEED WATER' FOR STEAM BOILERS,
AND IN EMPLOYING STEAM PRODUCED BY SUCH MEANS," to be as follows:-
Our Invention consists in the novel use of a tube or supplementary boiler
placed in the return flue, or in the space between two ordinary boilers, and in
passing the "feed water" through the said tube or boiler, the products of
combustion from the furnaces of the ordinary boilers being caused to circulate
around or pass over the outer surface of the additional tube or boiler before
passing to the chimney, by which means the "feed water is heated, and a

page_text: portion of the impurities deposited therefrom before entering the ordinary
boilers. The additional tube or boiler is connected by means of pipes with a
steam reservoir or holder fitted with a safety valve or valves, and com-
municating with the steam spaces of the ordinary boilers, or with the main
steam pipes in connection therewith through a valve or any other suitable
apparatus, by means of which arrangement the steam generated in the tube or
boiler constituting the "heater" may be employed for any purposes for which
it may be required.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Wild and Thomas Hodson in the Great Seal Patent
Office on the 17th April 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, THOMAS
WILD, of Heywood, in the County of Lancaster, Cotton Spinner, and
THOMAS HODSON, of the same Place, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of October, in the year of our Lord
One thousand eight hundred and sixty-one, in the twenty-fifth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Thomas Wild and Thomas Hodson, Her special license that we, the
said Thomas Wild and Thomas Hodson, our executors, administrators, and
assigns, or such others as we, the said Thomas Wild and Thomas Hodson,
our 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 Ireland, the Channel Islands,
and Isle of Man, an Invention for "CERTAIN IMPROVEMENTS IN THE METHOD
OF HEATING THE FEED WATER' FOR STEAM BOILERS, AND IN EMPLOYING STEAM
PRODUCED BY SUCH MEANS," upon the condition, amongst others, that we, the
said Thomas Wild and Thomas Hodson, by an instrument in writing under
our hands and seals, or under the hand and seal of one of us, should par-
ticularly 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 imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Thomas Wild, do hereby declare
the nature of the said Invention, and in what manner the same is to be per-

page_text: formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings (that is to say):-
:
Our Invention consists in the novel use of a tube or supplementary boiler
placed in the return flue, or in the space between two ordinary boilers, and in
passing the "feed water" through the said tube or boiler, the products of
combustion from the furnaces of the ordinary boilers being caused to circulate
around or pass over the outer surface of the additional tube or boiler before
passing to the chimney, by which means the "feed water is heated, and a
portion of the impurities deposited therefrom before entering the ordinary
boilers. The additional tube or boiler is connected by means of pipes with a
steam reservoir or hoilder fitted with a safety valve or valves, and com-
municating with the steam spaces of the ordinary boilers, or with the main
steam pipes in connection therewith through a valve or any other suitable
apparatus, by means of which arrangement the steam generated in the tube or
boiler constituting the "heater " may be employed for any purpose for which
may be required.
it
In order that the Invention may be better understood and explained in
detail, we bave hereunto attached a Sheet of Drawings made upon a scale
of about half an inch to the foot, and having similar letters of reference
marked upon corresponding parts on all the Figures.
Fig. 1 is a front elevation, representing a pair of boilers having the
supplementary "heater" and its steam chamber between; Fig. 2 is a
longitudinal section of the supplementary boiler or heater, shewing its con-
nection with the steam tube; Fig. 3 is a cross section, clearly shewing the
relative positions of the boilers and feed water heater; and Fig. 4 a plan view,
shewing the flue walls for supporting the boiler.
In Figs. 1, 2, 3, and 4, a, a, are the boilers as ordinarily employed for
generating, and 6 the supplementary boiler placed in the return flue for
beating the feed water, and for supplying it to the boilers by means of the
pipes c, c, its heat being obtained from the circulation of the products of com-
bustion from the furnaces around the said extra boiler. This previous heating
causes the water to deposit much of its impurity before passing into the
boiler, and the supplementary boiler or heater being furnished with the steam
reservoir or holder d, and exit valve e, any steam evolved of sufficient pressure
to lift the valve may pass to the steam spaces of the boilers, or to the main
steam pipes, or it may be employed for a separate purpose.
Having now described the nature of the said Invention, we wish it to be
distinctly understood that we claim the novel use of a supplementary boiler
placed in the return flue, or in the space between two boilers for heating the

page_text: 'feed water" previously to its passing to the boilers, as herein-before described,
set forth, and fully illustrated in the Drawings attached.
In witness whereof, I, the said Thomas Wild, have hereunto set my
hand and seal, this Sixteenth day of April, in the year of our Lord
One thousand eight hundred and sixty-two.
THOMAS WILD. (L.S.)