IMPROVEMENTS IN APPA- RATUS FOR SUPPLYING HEATED AIR IN BUILDINGS WITH ECONOMY AND EFFICIENCY
Year: 1875

page_text: LETTERS PATENT to Thomas Waller, of Fish Street Hill, in the City
of London, Engineer, for the Invention of "IMPROVEMENTS IN APPA-
RATUS FOR SUPPLYING HEATED AIR IN BUILDINGS WITH ECONOMY AND
EFFICIENCY."
Sealed the 26th April 1876, and dated the 27th October 1875.
PROVISIONAL SPECIFICATION left by the said Thomas Waller at
the Office of the Commissioners of Patents, with his Petition, on
the 27th October 1875.
I, THOMAS WALLER, of Fish Street Hill, in the City of London,
5 Engineer, do hereby declare the nature of the said Invention for “Im-
PROVEMENTS IN APPARATUS FOR SUPPLYING HEATED AIR IN BUILDINGS WITH
ECONOMY AND EFFICIENCY," to be as follows :—
The object of my Invention is to supply fresh warm air not only to the
room or house where the heat generator is fixed, but to other rooms near
or at a distance.

page_text: an ordinary cooking stove, in the space usually occupied by brickwork
in fixing the stove. I convey fresh air from the outside of the building
to the chamber thus constructed, thence to the room required to be
heated.
For hall stoves and such like apparatus I construct them with double
descending heat and smoke passages, so as to circulate all round.
The arrangement I prefer to adopt is to provide a kitchen range or
kitchener with a heat generating chamber, distinct in itself, but forming a
part of the range or kitchener, and from this to carry hot air pipes to the
various apartments or parts of the house or building to which my
Invention is to be applied, suitable valves being used to let on or shut
off the heat, as may be desired, my patent hot and cold air valves being
used in order to regulate the temperature.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Thomas Waller in the Great Seal Patent Office
on the 27th April 1876.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
WALLER, of Fish Street Hill, in the City of London, Engineer, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-seventh day of October, in
the year of our Lord One thousand eight hundred and seventy-five, in
the thirty-ninth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Thomas Waller, Her
special licence, that I, the said Thomas Waller, my executors, admi-
nistrators, and assigns, or such others as I, the said Thomas Waller,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thercafter
during the term therein expressed, should and lawfully might make,
usc, 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 SUPPLYING HEATED AIR IN BUILDINGS WITH
ECONOMY AND EFFICIENCY," upon the condition (amongst others) that I,
he said Thomas Waller, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands

page_text: 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 Thomas Waller, 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:-
The object of my Invention is to supply fresh warm air not only to the
room or house where the heat generator is fixed, but to other rooms near
or at a distance.
I sometimes obtain the heat from a stove fixed in the basement, hall,
or staircase, and sometimes I construct a warm air chamber at back of
an ordinary cooking stove, in the space usually occupied by brickwork
in fixing the stove. I convey fresh air from the outside of the building
to the chamber thus constructed, thence to the room required to be
heated.
For hall stoves and such like apparatus I construct them with double
descending heat and smoke passages, so as to circulate all round.
The arrangement I prefer to adopt is to provide a kitchen range or
kitchener with a heat generating chamber, distinct in itself, but forming
a part of the range or kitchener, and from this to carry hot air pipes to
the various apartments or parts of the house or building to which my
Invention is to be applied, suitable valves being used to let on or shut
off the heat, as may be desired, my patent hot and cold air valves being
used in order to regulate the temperature.
Having thus described and ascertained the nature and object of my
said Invention, and intimated generally in what manner the same is to
be performed or carried out in practice, I will now, aided by the accom-
panying Drawings, proceed to further and particularly describe and
ascertain in what manner the same is to be performed or carried out in
practice, that is to say :-
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is front elevation of my improved stove; Fig. 2, sectional plan

page_text: Fig. 6, shews elevation of warm air chamber fitted at back of stove, as
before described; Fig. 7, sectional plan of Fig. 6.
Figures 1 to 5 represent a form of stove suitable for fixing in
basements, halls, staircases, or other parts of a building that may be
found suitable. A represents the fire-place or grate in which the fuel is
placed; B, hot air chambers; C, flue pipes, through which the products
of combustion from the fire pass, between chambers B; D, flues which
convey the products out of the apparatus; E, inlets for cold air which
rises in chambers B, said chambers being heated by the flue pipes C,
and the air passes as warmed through openings to opening g to the
regulator G, where the air issues, same being regulated in temperature
by the said regulator G; H, cold air chamber fitted to back of stove,
said chamber being in direct communication with the regulator G, so
that, should the heated air which circulates round the stove be of too
high a temperature it can be mixed with the air rising in said chamber H
to the degree required by means of the said regulator G. Instead of the
heated products passing out at the back by flues D same may be
conveyed to and under the stove by flue I. The iron which is in
immediate contact with the flame from the fuel is protected by fire-
brick a or other suitable material. The hot air chamber B' is open on
both sides of the grate, the air in this case passing through grating b¹ at
the back, the air being heated by coming in contact with the plates
enclosing fire-grate A, said air as heated passing direct into the room or
apartment through grating & fitted to front of stove.
In Figs. 6 and 7 K represents the air chamber, which is fitted at the
back of a cooking range in place of the brickwork which usually
occupies this space, said chamber at the lower part being in communi-
cation with the outer air; L represents the flue of the cooking stove as
ordinarily constructed. The waste heat, which at present passes off and
is absorbed by the brickwork, is used by these arrangements for heating
the air rising in chambers K, said air, as heated, passing into the room
or apartment which is to be heated, and the heated air may be regulated
by the regulator before described. The air chamber K is fitted with
projecting plates, as shewn, cast on the inside for giving greater heating
surface.
the nature and

page_text: The said Invention of "Improvements in Apparatus for Supplying
Heated Air in Buildings with Economy and Efficiency," wherein the
particular arrangements of descending flues at the sides of the stove for
heating the cold air are particular and important features, substantially
as same are shewn by the accompanying Drawings and herein-before
described.
Also the chamber fitted at back of cooking stove in place of the
brickwork usually used, substantially as shewn and described, it being
understood that I do not limit or confine myself to the precise details
shewn, as same may be varied without departing from the nature and
character of my said Invention.
In witness whereof, I, the said Thomas Waller, have hereunto set
my hand and seal, this Twenty-seventh day of April, in the year
of our Lord One thousand cight hundred and seventy-six.
5
Witness,
T. MORGAN,
21, Cockspur Street, S.W.
THO. WALLER. (L.S.)