IMPROVEMENTS IN STOVES AND FIRE-PLACES
Year: 1864

page_text: LETTERS PATENT to George Adam Burn, of Doughty Street, in the County
of Middlesex, Architect, for the Invention of "IMPROVEMENTS IN STOVES
AND FIRE-PLACES."
Sealed the 9th December 1864, and dated the 14th June 1864.
PROVISIONAL SPECIFICATION left by the said George Adam Burn
at the Office of the Commissioners of Patents, with his Petition, on the
14th June 1864.
I, GEORGE ADAM BURN, of Doughty Street, in the County of Middlesex,
Architect, do hereby declare the nature of the Invention for "IMPROVEMENTS
IN STOVES AND FIRE-PLACES," to be as follows:-
This Invention has for its object improvements in stoves and fire-places.
For these purposes the fire-grate or basket of a stove is made with bars, with
passages for the passage of the products of combustion into a back chamber
or space behind the back of the stove; the openings or passages between these
bars are capable of being closed by a single valve, or by a valve to each space
or opening. At the lower part of the chamber or space at the back of the
stove is a hinged inclined stove plate which is usually closed, but is hinged
in order that the space above it may be freed from any cinders or dust which
may lodge thereon. At the upper part of the chamber or space there is a
register valve hinged to the back of the stove which can either be closed over
the front opening at the upper part of the stove, or over the upper part of the

page_text: chamber or space behind the back of the stove, or its position may be regu-
lated intermediate of these two extreme positions. This register valve is
connected by a suitable rod to the valve or valves which close or regulate the
openings or grating at the back of the fire-grate or basket, and there is a rod
and handle leading to a convenient position in front of the stove, by which the
position of the register valve and the valve or valves at the openings at the
back of the fire-grate may be simultaneously regulated. Above the register
valve there is a double valve which is capable of closing the chimney above
the stove, or of leaving it partly open; this double valve is readily removed
when the chimney is about to be swept.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Adam Burn in the Great Seal Patent Office on
the 12th December 1864.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
ADAM BURN, of Doughty Street, in the County of Middlesex, Architect, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fourteenth day of June, in the year of our Lord
One thousand eight hundred and sixty-four, in the twenty-seventh year of Her
reign, did; for Herself, Her heirs and successors, give and grant unto me,
the said George Adam Burn, Her special licence that I, the said George
Adam Burn, my executors, administrators, and assigns, or such others as I,
the said George Adam Burn, 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 night
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 STOVES AND FIRE-PLACES," upon the condition (amongst others) that
I, the said George Adam Burn, my executors or administrators, by an instru
ment 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 i
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 George Adam Burn, do hereby
declare the nature of the said Invention, and in what manner the same i

page_text: to be performed, to be particularly described and ascertained in and by the
following statement thereof, that is to say :-
'
This Invention has for its object improvements in stoves and fire-places!
For these purposes the fire-grate or basket of a stove is made with bars, with
passages for the passage of the products of combustion into a back chamber
or space behind the back of the stove; the openings or passages between these
bars are capable of being closed by a single valve, or by a valve to cach space
or opening. At the lower part of the chamber or space at the back of the
stove is a hinged inclined stove plate which is usually closed, but is hinged
in order that the space above it may be freed from any cinders or dust which
may lodge thereon. At the upper part of the chamber or space there is a
register valve hung to the back of the stove which can either be closed over
the front opening at the upper part of the stove, or over the upper part of the
chamber or space behind the back of the stove, or its position may be regu
This register valve is
lated intermediate of these two extreme positions.
connected by a suitable rod to the valve or valves which close or regulate the
openings or grating at the back of the fire-grate or basket, and there is a rod
and handle leading to a convenient position in front of the stove, by which
the position of the register valve and the valve or valves at the opening at the
back of the fire-grate may be simultaneously regulated. Above the register
valve there is a double valve, which is capable of closing the chimney above
the stove, or of leaving it partly open; this double valve is readily removed
when the chimney is about to be swept.
Having thus stated the nature of my said Invention, I will proceed more
fully to describe the manner of performing the same.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a front elevation, Figure 2 a transverse section, and Figure 3
a plan in section of a stove and fire-place constructed according to my said
Invention.
A, back draught chamber; B, register valve for front draught; C, sliding
valve plate for back draught; D, double register plate removable by hand; E is
a bottom or sole plate placed in a direction inclining forwards, and constructed
so as to permit of its being moved by hand for the purpose of allowing the
escape of ash or other matters from the back chamber; F, bandle in front,
connected with horizontal arm, by which the simultaneous action of B and C
are regulated; G, fire-grate of improved form of continuous curved bars
without lower angle bars, by which a greater amount of radiated beat is
obtained with a less quantity of fuel. The action of this grate is regulated

page_text: by the handle F. When fully drawn out, the back draught is open and the
ordinary draught closed, i.e., the smoke passes through the fire into the back
chamber before it enters the chimney flue, and by the draught thus produced
the carbon of the smoke is effectually consumed, and the most severe down
draught counteracted. When the handle is pushed in, the back draught
is completely closed, and the smoke then passes pendicularly into the flue
through the register vàlve B in the ordinary manner. It will be seen that
any regulated proportion of either of these draughts may be produced by the
action of the handle, and a simple stop is provided by which it can be fixed at
either the ordinary or the back draught, or intermediately between the two.
Having thus described the nature of my said Invention, and the manner of
performing the same, I would state that the forms of the parts may be varied
without departing from my Invention; but what I claim is, the combined
arrangement herein described.
In witness whereof, I, the said George Adam Burn, have hereunto set 1
my hand and seal, this Tenth day of December, in the year of our
Lord One thousand eight hundred and sixty-four.
GEO. ADAM BURN. (L.B.)