IMPROVEMENTS IN THE . ARRANGEMENT OF FURNACES AND. APPARATUS CONNECTED THEREWITH FOR FACILITATING THE COMBUSTION OF SMOKE, AND FOR PREVENTING THE COLD AIR FROM GOING INTO THE FLUES DURING THE ACT OF FIRING
Year: 1866

page_text: LETTERS PATENT to William Bogg, of Marsh Lane, Preston, in the County
of Lancaster, Ironfounder, for the Invention of "IMPROVEMENTS IN THE
. ARRANGEMENT OF FURNACES AND. APPARATUS CONNECTED THEREWITH FOR
FACILITATING THE COMBUSTION OF SMOKE, AND FOR PREVENTING THE COLD AIR
FROM GOING INTO THE FLUES DURING THE ACT OF FIRING."
Sealed the 24th October 1866, and dated the 28th April 1866.
PROVISIONAL SPECIFICATION left by the said William Begg at the Office
of the Commissioners of Patents, with his Petition, on the 28th April
1866.
I, WILLIAM BEGG, of Marsh Lane, Preston, in the County of Lancaster,
Ironfounder, do hereby declare the nature of the said Invention for "Im-
PROVEMENTS IN THE ARRANGEMENT OF FURNACES AND APPARATUS CONNECTED THERE-
WITH, FOR FACILITATING THE COMBUSTION OF SMOKE, AND FOR PREVENTING THE
COLD AIR FROM GOING INTO THE FLUES DURING THE ACT OF FIRING," to be as
follows:-
My Invention consists in the application and combination of doors or closures
of furnaces in such manner that with two furnaces acting in combination the
smoke of one firo while stoking it will be admitted to and pass over the fire
in. the adjoining. furnace. For this purpose I apply a door or valve closure
over the bridge of each furnace, and connect them by rods and levers to their

page_text: respective furnace doors in such manner that when the furnace door is
opened the bridge door will be closed and the communication with the
chimney thereby cut off. At or near the front of the furnaces I provide a
communication between them, so that when the bridge door is closed of one
furnace the smoke and products of combustion pass from that furnace through
said communication and over the fire in the adjoining furnace, and thence to
the chimney.
I take care that the stoking of one furnace, that is to say, the supply of
fuel shall take place while the fire of the other is in a bright and incandescent
The communication between the fires may have a door connected
with the furnace doors so that it opens when they open, but practically I
think this unnecessary, as the communication may always remain open. The
furnace door may be kept open a greater or less length of time without
lowering materially the heat of the furnace, and the connections of the door
with the bridge valve or door be such that the latter may remain closed
some little time after the furnace door is shut, and it may only open gradually;
I prefer to work this arrangement in combination with a perforated dead
plate and perforated hollow bridge for the admission of air. I also apply it in
connection with hollow fire-bars and bridge, as described in the Specification
of my Patent, No. 972, dated the Fifth day of April 1862.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Begg in the Great Seal Patent Office on the 26th
October 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
BEGG, of Marsh Lane, Preston, in the County of Lancaster, Ironfounder,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-eight day of April, in the year of our Lord
One thousand eight hundred and sixty-six, in the twenty-ninth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said William Begg, Her special licence that I, the said William Begg,
my executors, administrators, and assigns, or such others as I, the said
William Begg, 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

page_text: and Ireland, the Channel Islands, and Isle of Man, an Invention for "IMPROVE-
MENTS IN THE ARRANGEMENT OF FURNACES AND APPARATUS CONNECTED THEREWITH
FOR FACILITATING THE COMBUSTION OF SMOKE, AND FOR PREVENTING THE COLD AIR
FROM GOING INTO THE FLUES DURING THE ACT OF FIRING," upon the condition (amongst
others) that I, the said William Begg, 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 months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Begg, 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,
reference being had to the Sheet of Drawings hereunto annexed, and to the
letters and figures marked thereon (that is to say):-
==
My Invention consists in the application and combination of doors or closures
of furnaces in such manner that with two furnaces acting in combination tho
smoke of one fire while stoking it will be admitted to and pass over the fire:
in the adjoining furnace. For this purpose I apply a door or valve closure
at or behind the bridge of each furnace and connect them by rods and levers
to their respective furnace doors in such manner, that when the furnace door is
opened the bridge door will be closed, and the communication with the chimney
thereby cut off. At or near the front of the furnaces I provide a communication
between them, so that when the bridge door is closed of one furnace the smoke:
and products of combustion pass from that furnace through said communication
and over the fire in the adjoining furnace and thenco to the chimney.
I take care that the stoking of one furnace, that is to say, the supply of
fuel shall take place while the fire of the other is in a bright and incandescent
state. The communication between the fires may have a door connected.
with the furnace doors so that it opens when they open, but practically I
think this unnecessary, as the communication may always remain open..
The furnace door may be kept open a greater. or less length of time without
lowering materially the heat of the furnace and the connections of the door
with the bridge valve or door be such that the latter may remain closed some
little time after the furnace door is shut, or it. may open gradually. I prefer:
to work this arrangement of parts in combination with a perforated dead plate
and perforated hollow bridge for the admission of air. I also apply it in con>
nection with hollow fire-bars and bridge, as in the Specification of my Patent,
Number 972, bearing date the Fifth day of April 1862.

page_text: DESCRIPTION OF DRAWINGS.
The annexed Drawings represent different views of a double flue or Cornish
boiler fitted and furnished according to my Invention.
· Figure 1 represents a front or end view of the boiler; Figure 2, a longi-
tudinal vertical section through one of the flues; Figure 3 is a tranversē
vertical section, while Figure 4 is a horizontal section through both flues.
The longitudinal sections represent only the furnace end of the boiler, which
may be continued to any convenient length; a, a', are the furnace door frames
fixed on to the front of the boiler with dead plate 6 and other parts as in
ordinary, but with the addition of a channel or enclosed space c, c, establishing
free communication between the furnaces at the front, and is indicated by
the arrows in Figure 4. The furnace doors d, d¹, are fitted and hinged as
usual, but with the addition of crank arms e, e¹, extended from their axes.
Behind the fire bridges h, h', are disposed doors or valves f,f", mounted on fulcra
at 9, 9, on which they may be moved so as to close (together with the brickwork
or other foundation k, k, on which they rest) the passage m to the chimney,
as seen in Figure 2, or to open it while in the position shown dotted, as
before mentioned, this opening and closing of doors or valves f, f¹, is dependent.
on the position of the furnace door, being by it actuated and controlled; for
this
purpose I establish a communication between said valves and furnace doors,
this is effected by carrying connecting rods 1, 1, from the crank arms e, e¹, to
bell-crank levers p, p, see p in Figure 2, which is mounted on a fixed fulcruni
at r, the other arm of the bell crank is connected by a rods to a lug projecting
from the valve door f. According to this arrangement it will be apparent
that when a furnace door d is opened the valve f of the same furnace will be
closed, and vice versa, that is to say, when the furnace door is closed, the
valve will be open and the communication between the furnace and the
chimney directly established. According to these arrangements it will be
evident that when it is desired to throw fuel on the fire or otherwise to stoke
it, and the door d is opened for that purpose, the valve f must be closed, this
being closed the only communication with the chimney from said fire will be
by the passage c and through the other furnace, thus the gases evolved from
the fresh fuel will be constrained to pass over the other fire, which should
at the time be in a more or less incandescent state to insure as much as
possible the combustion of said gases and consumption of the smoke, as is
well understood. In stoking the door may be left open for a greater or
less length of time as may be necessary after throwing on fresh fuel.
The beneficial results arising from the combustion of the smoke and con-

page_text: sequent ecconomy of fuel are by these means ensured without any special
attention on the part of the stoker. I have represented this Invention as applied
to a flue boiler only, but it is obvious the same arrangements might be
established between any two furnaces disposed in juxtaposition.
Having described the nature of my Invention, and the manner of performing
the same, I declare that what I claim as my Invention to be protected by the
herein-before in part recited Letters Patent is,-
The combination and arrangement of furnaces having the doors connected
with valves in the flues or passages to the chimney, in the manner and for the
purposes herein-before specified.
In witness whereof, I, the said William Begg, have hereunto set my
hand and seal, this Twenty-third day of October, in the year of our Lord
One thousand eight hundred and sixty-six.
WILLIAM BEGG. (L.S.)
WILLIAM BEGG. (L.S.)