IMPROVEMENTS IN BOILERS FOR HEATING WATER TO SUPPLY PIPES, TUBES, OR OTHER APPARATUS FOR WARMING BUILDINGS
Year: 1867

page_text: LETTERS PATENT to John Clowes Woolfield, of St. Albans, in the
County of Hertford, for the Invention of "IMPROVEMENTS IN BOILERS FOR
HEATING WATER TO SUPPLY PIPES, TUBES, OR OTHER APPARATUS FOR
WARMING BUILDINGS."
Sealed the 29th May 1868, and dated the 2nd December 1867.
PROVISIONAL SPECIFICATION left by the said John Clowes Woolfield
nt the Office of the Commissioners of Patents, with his Petition, on the
2nd December 1867.
I, JOHN CLOWES WOOLFIELD, of St. Albans, in the County of Hertford,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN
BOILERS FOR HEATING WATER TO SUPPLY PIPES, TUBES, OR OTHER APPARATUS FOR
WARMING BUILDINGS," to be as follows, that is to say:-
My Invention is of a boiler for heating water to supply pipes, tubes, or other
apparatus for warming buildings, which boiler may be cleaned internally
without disturbing the outer shell of the said boiler, or any of the pipes or
other apparatus attached thereto. The boiler is formed by an outer shell and
an internal flue tube connected together or cast in one piece. The union between
the shell and flue tube is at the end nearest the fire-doors or front end; the
flue tube is closed at the end farthest from the fire-doors, herein-after called
the back end. On the back end of the shell is a flange, to which is attached
by bolts a lid, on removing this lid the interior of the boiler may be cleaned
The Alue tube is divided into three divisions, firstly, the ash-pit or lowest

page_text: division; secondly, the furnace or midle division, which is enclosed by fire-
doors and contains the grate and dead plate; thirdly, the return flue or
bighest division which is in communication with the funnel or smoke pipe.
The boiler is supposed to lie horizontally in a line parallel to its longest axes;
the space between and enclosed by the shell and flue tube is the space in
which the water is boiled; the partition between the furnace and flue may
be of fire-brick. Any form of shell or tube may be adopted or any suitable
metal employed in the manufacture of the aforesaid boiler without departing
from the nature of my Invention.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Clowes Woolfield in the Great Seal Patent Office
on the 30th May 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
CLOWES WOOLFIELD, of Saint Albans, in the County of Hertford, send
greeting.
WHEREAS. Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Second day of December, in the year of our
Lord One thousand eight hundred and sixty-seven, in the thirty-first year of
Her reign, did, for Herself, Hler heirs and successors, give and grant unto
me, the said John Clowes Woolfield, Her special licence that I, the said
John Clowes Woolfield, my executors, administrators, and assigns, or such
others as the said John Clowes Woolfield, 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, the Channel Islands, and Isle of Man, an Invention
for "IMPROVEMENTS IN BOILERS FOR HEATING WATER TO SUPPLY PIPES, TUBES,
OR OTHER APPARATUS FOR WARMING BUILDINGS," upon the condition (amongst
others) that I, the said John Clowes Woolfield, 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 month's next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Clowes Woolfield, do hereby
declare the nature of my said Invention, and in what manner the same is

page_text: to be performed, to be particularly described and ascertained in and by the
following statement :-
My Invention is of a boiler for heating water to supply pipes, tube, or
other apparatus for warming buildings, which boiler may be cleaned internally
without disturbing the outer shell of the said boiler, or any of the pipes or
other apparatus attached thereto; the boiler is formed by an outer shell and
an internal flue tube connected together or cast in one piece. The union
between the shell and flue tube is at the end nearest the fire-doors; the flue
tube is closed at the end farthest from the fire-doors, herein-after called the
back end. On the back end of the shell is a flange, to which is attached by
bolts a lid; on removing this lid the interior of the boiler may be cleaned.
The flue tube is divided into three divisions, namely, firstly, the ash-pit or
lowest division; secondly, the furnace or middle division, which is enclosed
by fire-doors, and contains the grate and dead plate; thirdly, the return flue
or highest division, which is in direct communication with the funnel or smoke
pipe. When of a circular form the boiler is supposed to lie horizontally in a
line parallel to its longest axes. The partition between the return flue and
furnace may be of fire-brick, or it may consist of a water bridge or space
enclosed by metal forming part of the flue tube. Any form of shell or flue
tube may be adopted, or any suitable metal employed in making this boiler,
without departing from the nature of my Invention, the novelty of which is in
dividing the flue tube, as above described, into three divisions consisting of
ash-pit, furnace, and return flue; also in constructing a boiler of small size
for heating water to supply apparatus for warming buildings, which boiler
may be cleaned internally and incrustation be completely removed from its
inner surface, although too small for a man to enter by an ordinary manhole.
When the boiler is made of a rectangular form it is advisable to place the
lid on the upper part of it.
In witness whereof, I, the said John Clowes Woolfield, have hereunto set
my hand and seal, this: Twenty-ninth day of May, in the year of our
Lord One thousand eight hundred and sixty-eight.
JOHN CLOWES WOOLFIELD. (L.S.)