IMPROVEMENTS IN STOVES AND APPARATUS USED IN CONSUMING FUEL AND IN VENTILATING
Year: 1845

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
LESLIE, of Conduit Street, Hanover Square, in the County of Middlesex,
Tailor to Her Majesty, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Twenty-eighth day of January, in the eighth year of Her reign,
did, for Herself, Fler heirs, and successors, give and grant unto me, the said
John Leslie, my exors, adñiors, and assigns, Her especial licence, full power,
sole privilege and authority, that 1, the said John Leslie, my exors, adñiors, and
assigns, or such others as I, the said John Leslie, my exors, adiñors, or
assigns, should at any time agree with, and no others, from time to time and
at all times during the term of years therein mentioned, should and lawfully
might make, use, exercise, and vend, within England, Wales, and the Town
of Berwick upon Tweed, my Invention of "IMPROVEMENTS IN STOVES AND
APPARATUS USED IN CONSUMING FUEL AND IN VENTILATING;" in which said Letters
Patent is contained a proviso that I, the said John Leslie, shall cause a
particular description of the nature of my said Invention, and in what manner
the same is to be performed, to be inrolled in Her said Majesty's High Court
of Chancery within six-calendar months next and immediately after the date
of the said in part recited Letters Patent, as in and by the same reference
being thereunto had, will more fully and at large appear.

page_text: John Leslie, do hereby declare that the nature of my said Invention, and the
manner in which the same is to be performed, are fully described and ascer-
tained in and by the following statement thereof, reference being had to the
Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say:-
My Invention relates, first, to improvements in arranging stoves and
apparatus for consuming fuel for heating ovens and boilers, and also for
ventilating.
And, secondly, my Invention relates to improvements in arranging apparatus
for consuming fuel for heating and ventilating rooms and places. And in
order that my Invention may be most fully understood, and readily carried into
effect, I will proceed to describe the Drawing hereunto annexed, in the various
Figures of which the same letters are used to indicate similar parts.
DESCRIPTION OF THE DRAWING.
Figure 1 shews the section of a stove and apparatus for heating a boiler and
an oven, and also for ventilating a kitchen or room in which such apparatus
may be employed. Figure 2 is a front view thereof. a, a, is the fire-place or
stove, there being no fire-bars at the bottom, the front being comprised of wire
bars of small diameter, and the fire-place is very shallow from front to back,
the back consisting of fire brick or tile b, constituting one side of the oven,
which I prefer to be of fire brick or tile, but it may be of cast iron. c is the
oven, there being a flue of the same width as the fire passing over and under
it, so that the draft into the chimney takes the course indicated by the arrows.
d is a boiler, the shape of which is clearly shewn, and it offers a very extensive
surface to be heated by the passage of heat through the flue e, e, from the fire
to the chimney. The upper surface of the boiler is suitable for a hot plate,
and there may be openings with suitable pipes or apparatus to have steaming
apparatus applied thereto. Proper means of supplying the boiler constantly
with water are to be applied, and a cock or cocks for drawing off hot water.
Just above the back of the boiler I apply a damper in the chimney, so as to
be able to cut off or regulate the draft. The oven door may be of cast iron,
but I prefer it to be fire tile or brick, is placed on one side of the oven, the
other side being closed; by this arrangement a very small consumption of fuel
with take place, and yet a very large frontage of fire surface will be obtained
for roasting or other purposes, and at the same time the oven will be in a
constantly heated state suitable for baking, and a large quantity of water will
be kept heated to a degree to give off' steam. In order to ventilate the

page_text: kitchen or room in which such apparatus is set I cause a long opening f, f, to
be made into the chimney, rising from the upper surface of the boiler to the
cornice or ceiling, which opening may be from two to four inches wide, and it
will be found that by such means there will be a constant passage of the air
from the kitchen or room through such long opening, by which any impure
air will be carried off'; and in order that the outgoing air may not be greater
than the case requires for the time being, I have iron covers, shutters, or
slides, which may be caused to cover such opening to a greater or less extent,
and such covers may be a series of doors, slides, or shutters, one above the
other, hinged to the side of the opening f, or they may be metal plates moving
on axes, in the character of louvre board, so arranged that any of them may
be closed, or more or less open. And it will be found by this arrangement of
apparatus there will be no tendency for the smoke or vapours passing up
the chimney from the fire to pass into the kitchen or room, but there will
be a constant draft from the kitchen or room up the chimney, which will
not only carry away the products from the fire up the chimney, but also
the air from the room or kitchen, thus producing any desired degree of ven-
tilation, as well as an advantageous consumption of fuel. In constructing
stoves and apparatus for heating drawing and other rooms the same principle
of arrangement, so far as the shallow fire and opening with the chimney, is
observed, but there being no oven or boiler there will be no tortuous descend-
ing flue, as above shewn and described. Figure 3 shews a front view, and
Figure 4 a vertical transverse section of a stove and apparatus suitable for
beating and ventilating rooms. a, a, is the fire-place, which I prefer to have
as near as may be to the floor, and that the sides and back should be of fire-
brick; the chimney g has an opening f, f, of two or more inches wide, into
the chimney, with means for closing or partially closing of the same, so as to
regulate the quantity of air carried off by the draft up the chimney. The
opening frises to the cornice, as is shown. I would remark that I have in
the Drawing shown in the apparatus in the plainest and most simple form, but
architectural ornaments may be resorted to, both in respect to the chimney
and to the opening for the fire-place, as well as for the opening into the
chimney, according to the taste of the person directing the construction of
apparatus according to my Invention. I would remark that the arrangement
of stove and apparatus just described will be found to offer great advantage in
consuming fuel economically, giving off the largest quantity of heat to the
apartment where it may be applied, and at the same time producing a very
healthful ventilation by carrying off the impure air of the room through the
long opening f into the chimney. In Figures 1 and 2 the long opening fis

page_text: more or less closed by means of a series of 'flaps with horizontal axes, which
may be more or less opened, and in Figures 3 and 4 the long opening is
covered by vertical flaps, as shown.
Having thus described the nature of my Invention, and the means pursued
by me in carrying the same into effect, I would have it understood that I do
not confine myself to the details shown so long as the peculiar character
of either arrangement of apparatus according to my Invention be retained.
But what I claim is, first, the mode of arranging stoves and apparatus for
consuming the fuel for heating ovens and boilers, and for ventilating the
kitchens or rooms in which the same is applied, as described in respect to
Figures 1 and 2. And, secondly, I claim the mode of arranging stoves
or apparatus for consuming fuel for heating and ventilating rooms or apart-
ments, as described in respect to Figures 3 and 4.
In witness whereof, I, the said John Leslie, have hereunto set my hand
and seal, this Twenty-sixth day of July, the year of our Lord One
Enrolled the Twenty-eighth day of July, in the year of our Lord One
thousand eight hundred and forty-five.