AN IMPROVED APPARATUS OR MEANS FOR UTILIZING THE WASTE HEAT OF STEAM BOILERS."
Year: 1875

page_text: LETTERS PATENT to James Wilson, of Ossett, near Wakefield, in
the County of York, for the Invention of " AN IMPROVED APPARATUS
OR MEANS FOR UTILIZING THE WASTE HEAT OF STEAM BOILERS."
PROVISIONAL SPECIFICATION left by the said James Wilson at the
Office of the Commissioners of Patents, with his Petition, on the
25th November 1875.
I, JAMES WILSON, of Ossett, near Wakefield, in the County of York,
do hereby declare the nature of the said Invention for "AN IMPROVED
APPARATUS OR MEANS FOR UTILIZING THE WASTE HEAT OF STEAM BOILERS," to be
as follows:
This Invention relates to the construction of an auxiliary apparatus
for utilizing the waste heat of the return draft of steam boilers, in
effecting the heating of water to be used as the feed of the boilers, or
for other analogous purposes.
The auxiliary heat utilizing apparatus is constructed with a capacious
water space, into which project cavities or recesses of a height equal to
that of the boiler flues, and of a width exceeding the height thereof,

page_text: The
Through these recesses or cavities are passed conical or cylindrical
tubes, which I arrange by preference in a vertical direction.
recesses are surrounded on all sides but the front with water space, and
these tubes serve to unite opposite parts thereof and effect an efficient
circulation of the water contained within the auxiliary heat utilizing
apparatus. The apparatus may be provided with man-holes, safety
valves, or any usual safety, precautionary, or necessary appliances.
As thus constructed the auxiliary apparatus is arranged or set close
against the rear end of the boiler flues in such a manner that the incom-
pletely utilized products of combustion from the latter as they pass out
therefrom will enter and pass round the said recesses or cavities, the
water surrounding and in the tubes of which absorb a considerable
further portion of the heat, and subsequently to traversing such recesses
or cavities the said products of combustion, now nearly exhausted of
their heat, pass therefrom to and along exterior side flucs formed along
or around the boiler, for which purpose the said cavities or recesses are
left of a sufficient width, as above referred to.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said James Wilson in the Great Seal Patent Office
on the 23rd May 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
WILSON, of Ossett, near Wakefield, in the County of York, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-fifth day of November, in the
year of our Lord One thousand eight hundred and seventy-five, in the
thirty-ninth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said James Wilson, Her special
licence, that I, the said James Wilson, my executors, administrators,
and assigns, or such others as I, the said James Wilson, 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 Ireland,

page_text: the Channel Islands, and Isle of Man, au Invention for "AN IMPROVED
APPARATUS OR MEANS FOR UTILIZING THE WASTE HEAT OF STEAM BOILERS," upon
the condition (amongst others) that I, the said James Wilson, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, 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 monthis next and imme.
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said James Wilson, 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 in writing, and on reference being had to
the accompanying Sheet of Drawings, that is to say :--
This Invention relates to the construction of an auxiliary apparatus
for utilizing the waste heat of the return draft of steam boilers, in
effecting the heating of water to be used as the feed of the boilers, or
for other analogous purposes.
This improved auxiliary heat utilizing apparatus, which is illustrated
in Figures 1 and 2 on the accompanying Sheet of Drawings, is con-
structed with a capacious water space 1, into which project cavities or
recesses 2 of a height equal to that of the boiler flues 3, but of a greater
width (see Figure 2). Through these recesses or cavities 2 are passed
conical or cylindrical tubes 4, see Figure 1, which I arrange in a vertical,
horizontal, or slanting direction. The recesses 2 are surrounded on all
sides but the front with the water space 1, and the tubes 4 serve to
unite opposite parts thereof and effect an efficient circulation of the
water it contains. The apparatus may be provided with man-holes,
safety valves, or any usual safety, precautionary, or necessary appliances.
As thus constructed the auxiliary apparatus is arranged or set close
against the rear end of the boiler flues 3 (see Figure 2) in such a manner
that the incompletely utilized products of combustion from the latter
as they pass out therefrom enter and pass around the said recesses or
cavities 2, the water surrounding and in the tubes 4 of which absorb a
considerable further portion of the heat, and subsequently to traversing
such recesses or cavities 2 the said products of combustion, now nearly
exhausted of their heat, pass therefrom to and along exterior side flues 5

page_text: formed along or around the boiler, to allow of which the said cavities or
recesses 2 are made of the width above referred to.
The part 6 of the water space, which is also provided with tubes 7,
depends into the under flue 8, Figure 1, and utilizes the waste heat
traversing such flue on its passage to the chimney.
The adaptation of this auxiliary apparatus to boilers of the usual
construction dispenses with much of the usual brick setting.
Having now particularly described and ascertained the nature and
object of my said Invention, together with the manner in which the
same is to be or may be carried into practical effect, I would remark in
conclusion that I claim as my Invention the novel and peculiar con-
struction and application to steam boilers of the above-described
auxiliary apparatus for utilizing the waste heat of the return draft of
steam boilers, in effecting the heating of water to be used as the feed of
the boilers, or for other analogous purposes, substantially as described
and as illustrated on the accompanying Drawings.
In witness whereof, I, the said James Wilson, have hereunto set
my hand and seal, this Nineteenth day of May, in the year of
our Lord One thousand eight hundred and seventy-six.