IMPROVEMENTS IN DRYING FURNACES
Year: 1852

page_text: LETTERS PATENT to Auguste Edouard Loradoux Bellford, of 16,
Castle Street, Holborn, Patent Agent, for the Invention of
IMPROVEMENTS IN DRYING FURNACES."-A communication.
PROVISIONAL SPECIFICATION left by the said Auguste Edouard
Loradoux Bellford at the Office of the Commissioners of Patents,
with his Petition, on the 23rd November 1852.
I, AUGUSTE EDOUARD LORADOUX BELLFORD, of 16, Castle Street,
Holborn (City), London, Patent Agent, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN DRYING FURNACES" to be
as follows:-
The employment of the carbonic acid gas and other incombustible
matters unmingled with smoke in a heated state, as withdrawn or
delivered from a furnace, for the purpose of drying and evaporating. The
cheif is to employ all the heat not absorbed from the gasses in the passage
to the drying and evaporating apparatus by means of a blower or other
exhausting apparatus, so applied as to produce the draft necessary for the
combustion of the fuel, and at the same time to cause the products of

page_text: combustion to be discharged into the drying kiln or evaporating apart-
ment, formed by plates of metal set at a short distance apart, or ex-
tending the whole length of the furnace, reaching above the top of the
fire, and below the grate or fire bed, for the purpose of admitting air
above the fire, and supplying sufficient oxygen to produce perfect
combustion, and to be employed with the products of combustion for
drying and evaporating purposes.
Fig. 1, is a plan of an arrangement for carrying out this Invention
by means of a steam boiler, divided as described. Fig. 2, is a section
of same by the line X, X, of Fig. 4. Fig. 3, is a front elevation of
the same, the drying kiln or chamber being omitted. Fig. 4, is a
horizontal section of the furnace, flues, and boiler setting, taken below
the boiler. Fig. 5, is a transverse section in the line
Figs. 2, and 4.
Similar letters of reference indicate corresponding parts.
of
A, Figs. 13, and 5, is the boiler set in brick work B. C, chimney
stock, the lower part cut away by partition a. D, chamber. E, Figs.
1, and 2, drying kiln, a part only of which is shown, as there is no
peculiarity in its construction. F, Figs. 1, 2, & 3, blower for exhaust-
ing the chamber D. The boiler A, is of the cylindrical kind, having
two furnaces G, G, below, seperated by the air well E, the two furnaces
connecting with a flue I, which communicates with the chimney through
two returns flues J, J, (Fig. 5,) opening into a box K, in front of the
boiler, and from this box two flues L, and M, branch off, the former
communicating with the chimney, and the latter with the chamber D,
either of them being closed by a damper N, (dotted lines Fig. 3.) In
the flue I, are cross walls P, P, and Q, Q, which prevent a too rapid
draughts, and serve to arrest the solid particles carried from the fire.
When the fire is first made, or during any time when fresh fuel is
fed in, and smoke produced, the smoke M, is closed by the damper N,
and the flue L, allowed to communicate with the chimney; but when
the fire is clear that communication is closed, and that with the
chamber D, opened, and the products of combustion and heated air
made to pass through the kiln or drying or evaporating apartment.
Instead of forcing the products of combustion and air into the drying
or evaporating apartment, the flue from the furnace may communicate

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Auguste Edouard Loradoux Bellford in the
Great Seal Patent Office, on the 23rd May 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
AUGUSTE EDOUARD LORADOUX BELLFORD, of 16, Castle Street, Holborn
(City), London, Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-third day of November, in
the year of our Lord One thousand eight hundred and fifty-two, in
the sixteenth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said Auguste Edouard Lora-
doux Bellford, Her special licence that I, the said Auguste Edouard
Loradoux Bellford, my executors, administrators, and assigns, or
such others as I, the said Auguste Edouard Loradoux Bellford, my
executors, administrators, and assigns, should at any time agree with,
and no others, from time to time and at all times 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, communicated to
me by a foreigner residing abroad, for "IMPROVEMENTS IN DRYING
FURNACES," upon the condition (amongst others) that I, the said Auguste
Edouard Loradoux Bellford, 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 per-
fórmed, 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 Auguste Edouard Loradoux
Bellford, do hereby declare the nature of the said Invention, and in
what manner the same is to be performed, to be particularly described

page_text: and ascertained in and by the following statement, and by the Drawings
hereunto annexed, that is to say:
The said Invention consists in the employment of the carbonic acid
gas and other incombustible matters unmingled with smoke in a heated
state, as withdrawn or delivered from a furnace, for the purpose of
drying and evaporating. The chief object of this improvement is to
employ all the heat not absorbed from the gases in the passage to the
drying and evaporating apparatus by means of a blower or other ex-
hausting apparatus, so applied as to produce the draft necessary for the
combustion of the fuel, and at the same time to cause the products of
combustion to be discharged into the drying kiln or evaporating apart-
ment, formed by plates of metal set at a short distance apart, or
extending the whole length of the furnace, reaching above the top of
the fire, and below the grate or fire bed, for the purpose of admitting
air above the fire, and supplying sufficient oxygen to produce perfect
combustion, and to be employed with the products of combustion for
drying and evaporating purposes.
Fig. 1, is a plan of an arrangement for carrying out the Invention
by means of a steam boiler, divided as described. Fig. 2, is a side
elevation of the same by the line a, a, of Fig. 4. Fig. 3, is a front
elevation of the same, the drying kiln or chamber being omitted.
Fig. 4, is a horizontal section of the furnace, flues, and boiler setting,
taken below the boiler. Fig. 5, is a transverse section in the line *, *,
of Figs. 2, and 4.
Similar letters of reference indicate corresponding parts.
A, Figs. 1, 3, and 5, is the boiler set in brickwork B. C, chimney
stack, the lower part cut away by partition A'. D, chamber. E, Figs.
1, and 2, drying kiln, a part only of which is shown, as there is no
peculiarity in its construction. F, Figs. 1, 2, and 3, blower for
exhausting the chamber D. The boiler A, is of the cylindrical kind,
having two furnaces G, G, below, separated by the air well H, the two
furnaces connecting with a flue I, which communicates with the
chimney through two return flues J, J, (Fig. 5,) opening into a box
K, in front of the boiler, and from this box two flues L, and M, branch
off, the former communicating with the chimney, and the latter with

page_text: the chamber D, either of them being closed by a damper N, (dotted
lines Fig. 3.) In the flue I, are cross walls P, P, Q, Q, which prevent
too rapid drafts, and serve to arrest the solid particles carried from the
fires.
When the fire is first made, or during any time when fresh fuel
is fed in, and smoke produced, the flue M, is closed by the damper N,
and the flue I, allowed to communicate with the chimney; but when
the fire is clear that communication is closed, and that with the chamber
D, opened, and the products of combustion and heated air made to pass
through the kiln or drying or evaporating apartment.
Instead of forcing the products of combustion and air into the drying
or evaporating apartment, the flue from the furnace may communicate
directly with the apartment, and the blower may be placed at the
opposite end to draw them through. The furnace may be of any suitable
description.
I claim, first, employing the carbonic acid gas and other incombustible
matter or substances generated in combustion mingled or unmingled
with air, but unmingled with smoke, for drying and evaporating pur-
poses. Secondly, connecting a blower or equivalent device with a
furnace and kiln, or other drying or evaporating apartment, in such a
manner that it will produce the draft necessary for combustion, and at
the same time cause all the products of combustion to be discharged
into the said kiln or apartment, substantially as described..
In witness whereof, I, the said Auguste Edouard Loradoux Bell-
ford, have hereunto set my hand and seal, this Twenty-third
day of May, in the year of our Lord One thousand eight
hundred and fifty-three.