IMPROVEMENTS IN FURNACES FOR BGQxOHTRIYA HAM AND DAD WERE ECONOMIZING HEAT AND BURNING INFERIOR FUEL
Year: 1873

page_text: LETTERS PATENT to John Tennison Woods, of 2, Hillsborough Villas,
West Kensington Park, in the County of Middlesex, and Charles
Baron de Malortie, of 84, Jermyn Street, St. James, in the County
of Middlesex, for the Invention of "IMPROVEMENTS IN FURNACES FOR
BGQxOHTRIYA HAM AND DAD WERE "
Scaled the 5th August 1873, and dated the 19th March 1873.
PROVISIONAL SPECIFICATION left by the said John Tennison Woods
and Charles Baron de Malortie at the Office of the Commissioners of
Patents, with their Petition, on the 19th March 1873.
We, JOHN TENNISON WOODS, of 2, Hillsborough Villas, West
Kensington Park, in the County of Middlesex, and CHARLES Baron DE
MALORTIE, of 84, Jermyn Street, St. James, in the County of Middlesex,
do hereby declare the nature of the said Invention for "IMPROVEMENTS
IN FURNACES FOR ECONOMIZING HEAT AND BURNING INFERIOR FUEL," to be as
follows:

page_text: and similar heating vessels, a very large proportion of the available heat
obtained from the combustion of the fuel is lost or wasted. This is due
partly to the excessive amount of cold air admitted into the fire-place,
and partly to the fact that the fuel is in immediate contact with the
cooler surface of the boiler, steam boiler, pan, oven, or similar heating
vessels to be heated, by which the temperature is so much reduced
that the combustion is imperfect, smoke is sometimes produced, and
only the best burning and most expensive description of fuel can be
employed.
Our improvement consists in enclosing the portion of the furnace in
which the combustion takes place in a fire-brick arch, fire-clay arch, or
arch of other fire-resisting material, which is necessarily interposed
between the burning fuel and the bottom and sides of the boiler, steam
boiler, pan, oven, and similar heating vessels to be heated, and bringing
the heated air and products of combustion back to the flues between the
top of the arch and the bottom and sides of the boiler, steam boiler, pan,
oven, and similar heating vessels. By this improvement the heat of the
burning fuel is confined and concentrated, and a very high temperature
is maintained in the fire-place, by which the combustion is rendered
more perfect, while the heated air and gas having to pass between the
top of the arch and the bottom and sides of the boiler, steam boiler, pan,
oven, and similar heating vessels, the heat is all absorbed and utilized.
In a furnace of this description such inferior fuel as coal dust, coke
breeze, or refuse cinders, charcoal dust, culm dust, sawdust, and similar
material can be conveniently and economically burned, which inferior
description of fuel would be almost unavailable.
We do not confine ourselves to any particular arrangement of flues,
though we give preference to the arrangement specificd above, and
modifications in the flues can for special purposes be advantageously
introduced.
What we specially claim is, the confining and concentrating of the
heat from the burning fuel by a non-conducting arch of fire-brick, fire-
clay, or other fire-resisting material above and at the sides of the
burning fuel (either perforated or not), so as to produce a temperature
sufficiently high to cause the combustion of such inferior fuel as coal
dust, coke breeze, or refuse cinders, charcoal dust, culm dust, sawdust,
and similar material in an advantageous and economical way. We claim

page_text: its application to boilers and steam boilers of every description,
locomotive, Cornish, stationary, and for marine propulsion, for brewers'
coppers and boilers, for all other description of boilers or pans for
heating or the evaporation of water and all other fluids, and for all
description of ovens, for domestic heating grates and purposes, and for
all apparatus for heating air, gases, water, or other fluids, and for all
distilling apparatus.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Tennison Woods and Charles Baron de
Malortie in the Great Seal Patent Office on the 13th September
1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOHN
TENNISON WOODS, of 2, Hillsborough Villas West, Kensington Park,
in the County of Middlesex, and CHARLES Baron DE MALORTIE, of 84,
Jermyn Street, in the County of Middlesex, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Nineteenth day of March, in the year of our
Lord One thousand eight hundred and seventy-three, in the thirty-sixth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto us, the said John Tennison Woods and Charles Baron de
Malortie, Her special licence that we, the said John Tennison Woods and
Charles Baron de Malortie, our executors, administrators, and assigns, or
such others as we, the said John Tennison Woods and Charles Baron de
Malortie, our 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 FURNACES FOR ECONOMIZING HEAT AND BURNING INFERIOR
FUEL," upon the condition (amongst others) that we, the said John
Tennison Woods and Charles Baron de Malortie, our executors or
administrators, by an instrument in writing under our, 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

page_text: Office within six calendar months next and immediately after the date
of the said Letters Patent.
NOW KNOW YE, that I, the said John Tennison Woods, on behalf of
myself and the said Charles Baron de Malortie, 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 :-
The objects of the Invention are to economise heat and to burn
inferior descriptions of fuel, and these objects we effect by constructing
the furnaces with a grate and with a combustion chamber in continuation
thereof, contained within a perforated or non-perforated arch or covering
(of fire-brick or other suitable material) interposed between the pan or
other vessel to be heated and the burning fuel and gases in the said
chamber as partially or completely to retain the burning fuel and gases
in the chamber from playing or acting directly upon the pan or vessel,
and to lessen or diminish any direct cooling effect of the pan or vessel
upon the burning fuel and products of. combustion, the heated gas being
conveyed away from the combustion chamber to the pan or vessel, either
through the perforations in the arch or covering, and by one or more
flues, or otherwise by one or more flues only when the arch or covering
is constructed without perforations.
The intended construction and arrangement are exemplified by the
accompanying Drawing as applied to an open evaporating pan, and
this Drawing is to be understood as illustrative only, and not as limiting
or binding us to the precise construction and arrangement represented.
Figure 1 is a longitudinal section, and Figure 2 a sectional plan, the
section being taken along the dotted line A, A, in Figure 1; Figures 3, 4,
and 5, are transverse sections taken respectively at the positions shewn
by the dotted lines B, B, C, C, and D, D, in Figure 2; Figure 3, being
through the fire-grate and in front of the pan; Figure 4, through the
fire-grate and pan; and Figure 5, through the flues at and behind or at
the end of the pan. Similar letters of reference wherever employed in
the several Figures denote corresponding parts.
e is the pan; f,f, the side walls and main brickwork of the furnace ;
9, the chimney; h, the fire-bars, all of which are of the ordinary
description, and considered independently of arrangement and com-

page_text: material interposed between the pan or other vessel to be heated and the
burning fuel and gases in the said chamber, and with one or more flues
to convey the heated gases away from the combustion chamber to the
pan or vessel.
In witness whereof, I, the said John Tennison Woods, have here- 5
unto set my hand and seal, this Thirtieth day of July, in the
year of our Lord One thousand eight hundred and seventy-three..