IMPROVED MEANS OF AND APPARATUS FOR HEATING, THE WATER TO BE USED IN STEAM BOILERS AND IN OTHER VESSELS
Year: 1867

page_text: LETTERS PATENT to James Henry Nelson and Thomas Briggs, both of
Wakefield, in the County of York, for the Invention of "IMPROVED
MEANS OF AND APPARATUS FOR HEATING, THE WATER TO BE USED IN STEAM
BOILERS AND IN OTHER VESSELS."
Sealed the 31st March 1868, and dated the 2nd October 1867.
PROVISIONAL SPECIFICATION left by the said James Henry Nelson and
Thomas Briggs at the Office of the Commissioners of Patents, with their
Petition, on the 2nd October 1867.
We, JAMES HENRY NELSON and THOMAS BRIGGS, both of Wakefield, in the
County of York, do hereby declare the nature of the said Invention for "IM-
PROVED MEANS OF AND APPARATUS FOR HEATING THE WATER TO BE USED IN STEAM
BOILERS AND IN OTHER VESSELS," to be as follows:-
The object of our Invention is to heat the feed water of steam boilers by
the means and apparatus hereafter described in a manner at once economical
in first cost and in general practice. For this purpose, within the flue
between the boiler and tho chimney stack, we plant a small boiler, flued or
not as desired (the size being dependent upon that of the amount of heated
water required), either in a horizontal or a vertical position according to
circumstances. This small boiler is fitted with the usual fittings of boilers,
some of which will require to be extended through the brickwork of the flue,
so as not to impair the efficiency of the latter, and it is fed with cold water.
A pipe communicates between it and the main boiler (or boilers, as the case

page_text: may be), and upon the. fire in the main boiler being lighted, some water of
course being in it, the flames and heat after passing through the boiler flue
on their way to the chimney stack surround and pass through the flue of the
smaller boiler and heat the water within it. The water so heated is admitted
to the main boiler and a continuous supply maintained, all cold water after
the first feed passing through the adjunct or feeding boiler which, as it will
have been seen, is heated by the waste heat on its passage to the chimney
stack.
The other vessels referred to in our title are dye pans and other vessels
used in manufactories where heated water is required, the water being drawn
direct from the small boiler or auxiliary vessel instead of from the large
boiler, as is now the case, with economical results.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Henry Nelson and Thomas Briggs in the Great Seal
Patent Office on the 2nd April 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
HENRY NELSON and THOMAS BRIGGS, both of Wakefield, in the County of
York, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of October, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said James Henry Nelson and Thomas Briggs, Her special licence that
we, the said James Henry Nelson and Thomas Briggs, our executors,
administrators, and assigns,, or such others as we, the said James Henry
Nelson and Thomas Briggs, 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 "In-
PROVED MEANS OF AND APPARATUS FOR HEATING THE WATER TO BE USED IN STEAM
BOILERS AND IN OTHER VESSELS," upon the condition (amongst others) that we,
the said James Henry Nelson and Thomas Briggs, our executors or adminis-
trators, by an instrument in writing under our or their hands and seals, or
under the hand and seal of one of us or them, should particularly describe
and ascertain the nature of the said Invention, and in what manner the

page_text: 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.
"
NOW KNOW YE, that I, the said James Henry Nelson, on behalf of
myself and the said Thomas Briggs, do hereby declare the nature of the said
Invention, and in what manner the same is to be performed, to be par-
ticularly described and ascertained in .and by the following statement thereof,
that is to say:-
:
:
The object of our Invention is to heat the feed water of steam boilers and
to supply hot water for other purposes by the means and apparatus herein-
after described in a manner at once economical in first cost and in general
practice. For this purpose in the main flue beyond the boiler or boilers we
place an auxiliary flued boiler with a certain number of tubes or pipes in the
flue of the said boiler, as shown on the Drawing hereafter referred to,
either in a horizontal or vertical position, according to circumstances (the size.
of the boiler and number of tubes being dependant upon that of the amount
of heated water required). This boiler or economizer is fitted with the usual'
fittings of boilers, some of which will require to be extended through the
brickwork of the flue so as not to impair the efficiency of the latter. The
economizer is filled with cold water, and a pipe is connected to the boiler or
boilers. The fire being. lighted the flames and heat, after passing through
and round the boiler or boilers on their way to the chimney stack, surround
and pass through the economizer, heating the water therein.. The water so
heated is admitted to the boiler or boilers, and a continuous supply main-
tained, all cold water after the first feed passing through the adjunct or
feeding boiler, which, as it will have been seen, is heated by the waste heat on
its passage to the chimney stack. The other vessels referred to in our title are
dye pans and vats and other vessels used in manufactories where heated.
water is required, the water being drawn direct from the ecocomizer instead
of from the steam boiler or boilers (as is now the case) with economical
results.
In order however that our Invention may be the better understood reference
is made to the accompanying Sheet of Drawings, and the letters and figures
marked thereon, that is to say:
DESCRIPTION OF DRAWINGS.

page_text: Letters A represent the economizer with its internal flue B and cross
flues C extending across the internal flue; D represents the main boiler flue
to the chimney stack, the arrow a showing the direction of the draft. Suitable
irons 6, Figure 2, preserve the economizer in its proper position. Letter c
shows the cock and pipe communicating the heated water to feed a boiler or
other vessel requiring heated water, whilst letter d shows cock and pipe for
admitting cold water to the economizer. Other ordinary boiler fittings, not
shown, are used, and ordinary boiler construction is used. Letter e shows the
blow-off cocks. It will readily be seen that the smoke and flame passing up
the internal flue of the economizer surrounding the cross tubes in its passage,
and also passing between the outer surface of the economizer and the brick-
work containing it, must speedily heat the water contained therein.
Having now stated the nature of our Invention, and in what manner the
same is to be performed, we wish it to be understood that what we claim as
and of our Invention is, the means and apparatus, substantially as described,
for heating water either for feeding boilers or other vessels without confining
ourselves to the precise details shown.
In witness whereof, I, the said James Henry Nelson, have hereunto set
my band and seal, this First day of April, in the year of our Lord One
thousand eight hundred and sixty-eight.
Witness,
PHILIP H. SHARP,
Leeds.
JAMES HENRY NELSON. (L.S.)