IMPROVEMENTS IN STOVES AND FIRE- PLACES
Year: 1854

page_text: LETTERS PATENT to Henry Olding, of Lambeth, in the County of Surrey,
Civil Engineer, for the Invention of "IMPROVEMENTS IN STOVES AND FIRE-
PLACES."
Sealed the 28th July 1854, and dated the 7th February 1854.
PROVISIONAL SPECIFICATION left by the said Henry Olding at the
Office of the Commissioners of Patents, with his Petition, on the 7th
February 1854.
I, HENRY OLDING, of Lambeth, in the County of Surrey, Civil Engineer,
do hereby declare the nature of the said Invention for "IMPROVEMENTS IN STOVES
AND FIRE-PLACES " to be as follows:-
My Invention consists in adapting to the back of stoves, and in substitution
for the ordinary back, an open back or grating which inclines slightly back-
wards at top, and the bottom of which does not descend quite to the bottom of
the grate. I fix my grate forward in the fire-place, and make a flue which
extends in front from the back or grating to the top of the stove, while at the
back the flue descends straight to about two-thirds of the length of the
grating or back, and then advances at a sharp angle. to near the bottom of
the back; the flue is carried backwards at a like angle,. and is then carried
down straight to the bottoni of the stove.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Olding in the Great Seal Patent Office on the 7th
August 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, J, HENRY
OLDING, of Lambeth, in the County of Surrey, Civil Engineer; send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of February, in the year of our Lord
One thousand eight hundred and fifty-four, in the seventeenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Henry Olding, Her special licence that I, the said Henry Olding, my execu-
tors, administrators, and assigns, or such others as I, the said Henry Olding,
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 STOVES
AND FIRE-PLACES," upon the condition (amongst others) that I, the said
Henry Olding, by an instrument in writing under my hand and seal, 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 months next and imme-
diately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Henry Olding, 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
thereof, reference being had to the Drawings hereunto annexed, that is to
say:
My Invention consists in adapting to the back of stoves and fire-places or
furnaces of any description, an open back or grating, either vertical or inclined,
in combination with a flue or chamber behind the stove or fire-place com-
municating with the ash pit, and fitted with a stationary or adjustable
throat piece or valve at or about the level of the fire grate, for the purpose
of regulating the admission of air to the flue or chamber, and to the
fire.
Figure 1 of the Drawings annexed is a front elevation; Fig. 2, a plan,
and Figure 3, a vertical section on the line a, b, in Figure 2, of a stove or fire-
place constructed according to my Invention. A, A,.are the front and side
bars of the stove; B, B, are the grate bars; and C is the open back or grating,

page_text: which is fitted loosely to the back plate D of the stove, and is either vertical
or inclined slightly backwards at top, and at the bottom does not descend quite
to the bottom of the grate; E is the flue or chamber behind the stove; and
F is the adjustable throat piece or valve, which is supported on the pins G, G,
working in slots H, I, formed in the sides of the flue or chamber E. The
throat piece or valve F is adjusted so as to give a greater or less area of
passage into the flue or chamber E, by means of the wedges I, I, or by
screws, levers, or other equivalent contrivances. K is the top plate of the
stove; and L, the register plate which is fitted to the sides of the stove so as
to leave air passages M, M, at the front and back. A similar air passage N
is left at the angle where the back plate D, and top plate K, meet to allow
heated air to pass to the flue or chamber E, and thence to the chimney
through the contracted orifice O. The result of these arrangements is, that
the smoke from the fire in the stove is almost entirely consumed, and the
apartment in which the stove is fixed is kept perfectly ventilated. The
.arrangement described is applicable to all kinds of fires and fire-places, either
vertical or horizontal.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that what I claim as my
Invention is,
The adaptation to stoves and fire-places of an open back or grating, in
combination with a flue or chamber behind the stove or fire-place communi-
cating with the ash pit, and fitted. with a stationary or adjustable throat piece
or valve, at or about the level of the fire grate, for the purpose of regulating
the admission of air to the flue or chamber and to the fire, as represented in
the Drawings annexed and herein-before described.
In witness whereof, I, the said. Henry Olding, have hereunto set my
hand and seal, this Fifth day of August, One thousand eight hundred
and fifty-four.
HENRY OLDING. (L.S.)