IMPROVEMENTS IN FURNACES PROVISIONAL SPECIFICATION
Year: 1856

page_text: LETTERS PATENT to Allen Levinston Hill, of Birmingham, in the County
of Warwick, Builder, for the Invention of "IMPROVEMENTS IN FURNACES
PROVISIONAL SPECIFICATION left by the said Allen Levinston Hill
the Office of the Commissioners of Patents, with his Petition, on
the 27th March 1856.
I, ALLEN LEVINSTON HILL, of Birmingham, in the County of Warwick,
Builder, do hereby declare the nature. of the Invention for "IMPROVEMENTS
IN FURNACES. FOR STEAM. BOILERS, JAPANNERS' STOVES, AND OTHER SUCH LIKE PUR-
POSES," to be as follows:-
My improvements in furnaces for steam boilers consist in the following
method of constructing and arranging the several parts:-On either. side of the
fire-place a flue is situated, opening into the air at one end and into a hollow
bridge at the other; the ends opening into the air are provided with doors,
whereby they can be opened and closed at. pleasure. The hollow bridge or
air chamber into which the said flues open consists of two walls, situated a
few inches apart, and occupying the back of the fire-place. The fire passes
over the said bridge, and the smoke is burned by the air supplied there. The

page_text: fire after passing under the boiler returns by one side, and, crossing to the
other side at the front end of the boiler, passes to the other end, and from
thence to the stack.
My improvements in japanners' stoves consist in making them as follows:-
I make two fire-places joined by a flue, these fire-places are charged alter-
nately; when the fire in one is in a glow the smoke from the other passes
through it, and the reverse. The fire passes from the fire-places under the
middle of the series of chambers constituting the stove, and after returning
over the said chambers, or circulating about them in any desired manner,
passes to the stack.
My improvements are applicable to furnaces used for other purposes than
steam boilers and japanners' stoves.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Allen Levinston Ilill in the Great Seal Patent Office on
the 26th September 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ALLEN
LEVINSON HILL, of Birmingham, in the County of Warwick, Builder, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of March, in the year of our
Lord One thousand eight hundred and fifty-six, in the nineteenth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Allen Levinson Hill, Her special licence that I, the said Allen
Levinson Hill, my executors, administrators, and assigns, or such others as
I, the said Allen Levinson Hill, 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 "IMPROVE-
MENTS IN FURNACES FOR STEAM BOILERS, JAPANNERS' STOVES, AND OTHER SUCH LIKE
PURPOSES," upon the condition (amongst others) that I, the said Allen
Levinson Hill, 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

page_text: 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.
NOW KNOW YE, that I, the said Allen Levinson Hill, do hereby declare
the nature of the said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement thereof, that is to say:-.
My Invention consists in constructing furnaces for steam boilers, japanners'
stoves, and other such like purposes, in the manner herein-after described, and
illustrated in the accompanying Drawing.
Figure 1 represents a transverse vertical section, and Figure 2 a horizontal
section, of a steam boiler furnace constructed according to my Invention.
a is the fire-place, on either side of which are flues b, c; the said flues open
into the air at one end, and into the hollow bridge d at the other. The
ends opening into the air are provided with doors e, f, whereby the said flues
can be opened and closed at pleasure. The hollow bridge or air chamber d,
into which the flues b, c, open, consist of two walls, situated a few inches apart,
and occupying the back of the fire-place. Fire passes over the bridge d, and
the smoke is burned by the air supplied to the said bridge. The fire after
passing under the boiler returns by one of the side flues g (see Figure 1), and,
crossing the front of the boiler, passes along the other side flue h, and from
thence to the stack.
In applying my Invention to japanners' stoves, I supply air to the fire-place
of the same by a flue in the side of the said stoves, as represented in the Draw-
ing, i being the fire-place of a japanners' stove, and k the side flue, conveying
the air to the back part of the fire-place.
In applying furnaces or fire-places constructed according to my Invention
to japanners' stoves, I prefer to use two fire-places, counccted with one another
by a fluo. The fire-places are charged alternately; when the fire in one is in
a glow the smoke from the other is made to pass through it, and the reverse.
The fire passes from the fire-places under the middle of the series of chambers
constituting the stove, and after returning over the said chambers, or cir-
culating about them in any desired manner, passes to the stack.
My improvements are applicable to furnaces used for other purposes than
steam boilers and japanners' stoves.
Having now described the nature of my said Invention, and the manner of
carrying the same into effect, I wish it to bo understood that I do not limit
myself to the precise details herein described and represented, as the same

page_text: may be varied without departing from the nature of my said Invention; but I
claim as my Invention, the method herein described, and illustrated in the
accompanying Drawing, of constructing furnaces for steam boilers, japanners'
stoves, and other such like purposes.
In witness whereof, I, the sail Allen Levinson IIill, have hereunto set
my hand and seal, this Twenty-fourth day of September, in the year of
our Lord One thousand eight hundred and fifty-six.
The mark of
Witness,
RICHARD SKERRETT,
ALLEN LEVINSON × HILL. (L.S.)
Clerk to George Shaw.