IMPROVEMENTS IN APPARATUS BURNING COMBUSTIBLE LIQUIDS IN FURNACES
Year: 1868

page_text: LETTERS PATENT to Henry Bunning, junior, of Field House, New
Cross, for the Invention of "IMPROVEMENTS IN APPARATUS
BURNING COMBUSTIBLE LIQUIDS IN FURNACES."
Sealed the 8th May 1868, and dated the 5th February 1868.
PROVISIONAL SPECIFICATION left by the said Henry Bunning
at the Office of the Commissioners of Patents, with his Petition,
on the 5th February 1868.
I, HENRY BUNNING, junior, of Field House, New Cross, do hereby
declare the nature of the said Invention for "IMPROVEMENTS
APPARATUS FOR BURNING COMBUSTIBLE LIQUIDS IN FURNACES," to be as
follows:-
This Invention has for its object improvements in apparatus for
burning combustible liquids in furnaces. In order to burn creosote
and other combustible liquids in furnaces, I place within the furnace
a receiver which is supplied with the liquid to be burnt by pipe
leading to a cistern above the level of the receiver, and this pipe
has a stop-cock upon it, by means of which the quantity of liquid
entering the receiver can be regulated. Within the receiver I prefer

page_text: that there should be a number of partitions dividing its interior in
such manner as to form a zig-zag passage through it; the liquid
enters the zig-zag passage and after circulating therein it issues as
highly heated vapour; this vapour passes into a pipo having a stop-
cock or regulator upon it, and beyond the stop-cock or regulator the
pipe is perforated, and through it the vapour issues into the furnace
by numerous jets and is consumed. This arrangement admits of the
heat being entirely under control as the passage of the vapour
into the furnace can be arrested at any moment or adjusted as the
requirements of the moment may dictate.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Bunning in the Great Seal Patent Office
on the 5th August 1868,
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
BUNNING, junior, of Field House, New Cross, send greeting,
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifth day of February, in the year
of our Lord One thousand eight hundred and sixty-eight, in the
thirty-first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Henry Bunning, Her special licence
that I, the said Henry Buuning, my executors, administrators, and
assigns, or such others as I, the said Henry Bunning, 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 APPARATUS FOR BURNING COMBUSTIBLE LIQUIDS IN FURNACES,"
upon
the condition (amongst others) that I, the said Henry Bunning, 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
mmediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said Henry Bunning, 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 :-
This Invention has for its object improvements in apparatus for
burning combustible liquids in furnaces. In order to burn creosote
and other combustible liquids in furnaces, I place within the furnace
a receiver, which is supplied with the liquid to be burnt by a pipe
leading to a cistern above the level of the receiver, and this pipe has
a stop-cock upon it, by means of which the quantity of liquid entering
the receiver can be regulated. Within the receiver I prefer that there
should be a number of partitions dividing its interior in such manner
as to form a zig-zag passage through it, the liquid enters the zig-zag
passage, and after circulating therein it issues as highly heated vapour;
this vapour passes into a pipe having a stop-cock or regulator upon it,
and beyond the stop-cock or regulator the pipe is perforated, and through
it the vapour issues into the furnace by numerous jets and is consumed.
This arrangement admits of the heat being entirely under control, as
the passage of the vapour into the furnace can be arrested at any
moment, or adjusted as the requirements of the moment may dictate.
And in order that my said Invention may be most fully understood
and readily carried into effect, I will proceed to describe more in detail
the manner of performing the same,
I will suppose that it is desired to construct an apparatus to consume
3 gallons of creosote in an hour under a boiler, of which the fire-
box is, say 6 feet long and 21 inches wide, and is adapted if coal were
used to burn about 2 of a cwt. of coal in the same time. I form a
chamber or box of cast iron about 1 foot shorter and 8 inches narrower
than the fire-box, and it may be about 9 inches deep. It has within
it 4 longitudinal and vertical partitions, which are cast in one piece
with the body of the chamber or box, and which are so arranged as
to form a channel passing several times to and fro from end to end.
The ends of the box or chamber are closed by covers, it may be of
wrought iron, to one of which the pipe to supply the creosote is adapted,
and to the other the pipe for the exit of the vapour which is produced.
This box or chamber is fixed in the fire-box, so that its bottom is
somewhat above the level at which the fire-bars are ordinarily placed,
and so that its hinder end is at the back of the fire-box, leaving a

page_text: space of say 12 inches between the front end of the box or chamber
and the ordinary fire door. In this space I prefer to arrange a damper
to regulate the quantity of air passing up in front of the box or
chamber. The creosote is supplied to one end of the zig-zag passage
by a pipe as already mentioned from a cistern above, so that the supply
is effected under a head of about 5 feet. The pipe is about 1 inches
diameter (external), and has a regulating stop-cock upon it on the
portion which is external to the fire-box. At the back of the box
or chamber and in connection with the further end of the zig-zag
passage is the pipe by which the vapour escapes, and which also is
about 1 inches diameter; it may have a stop valve upon it within
the fire-box but worked by a rod from the outside, or the apparatus
may be used without this stop-cock. This pipe is connected with two
other similar pipes running between the sides of the box or chamber
and the fire-box, one on either side; these pipes are closed at their
further or front ends, and each of them has, say four perforations on
its upper side; they are equally spaced, and each somewhat less than
th of an inch in diameter. In order to start the apparatus in the
first instance a small fire of wood is formed under the box or chamber,
and when this is thoroughly heated the creosote is admitted at first
in small quantity, vapour is produced, which is ignited as it issues from
the holes in the pipes, and these flames further heat the box or
chamber, and more creosote may then be admitted.
The arrangement of the apparatus will be similar whatever be the
size of the fire-box. What I claim is, the arranging within the fire-box
of a boiler, a box, or chamber to which combustible liquid is supplied
by a pipe with a regulating cock or valve upon it, and from which
box the vapour issues into a pipe or pipes within the fire-box, and thence
escapes by perforations at which it is burnt.
In witness whereof I, the said Henry Bunning, have hereunto set
my hand and seal, this Fifth day of August, in the year of our
Lord One thousand eight hundred and sixty-eight.
HENRY BUNNING, JUN. (L.S.)