IMPROVEMENTS IN GAS STOVES
Year: 1877

page_text: LETTERS PATENT to Henri Charles Gambier, Proprietor, of Paris, France, for
the Invention of "IMPROVEMENTS IN GAS STOVES."
PROVISIONAL SPECIFICATION left by the said Henri Charles Gambier at
the Office of the Commissioners of Patents on the 15th October 1877.
"
HENRI CHARLES GAMBIER, Proprietor, of Paris, France. IMPROVEMENTS IN GAS
STOVES."
My Invention relates to apparatus for producing heat and light by means of a
mixture of gas and air, projected on a plane or undulated surface upon which it is
spread, and burns with an extended flame. This surface, which is made of metal,
is suitably enclosed for utilising the heat and light.
The construction of this gas apparatus is based on the following conditions:―
The gas is discharged from a supply pipe into a tube or compartment of larger
diameter, which is placed in communication with the external air by means of a
pipe. The gas there mixes with the air, which is carried by it into a third tube or
compartment of still larger diameter, forming a reservoir of gasefied air or fire-box.
This reservoir is provided with a channel which brings the gaseous mixture into
contact with atmospheric air, causing it to travel over an extended surface, where
it burns with a large spreading flame. Two or more of these apparatus may be
juxtaposed in order to increase the effect.
The following is a description of an apparatus adapted to this system of com-
bustion, placed at the base of a metallic plate, whose sides are ordinarily enclosed
to reflect the heat and light:-The apparatus is composed of three concentric tubes,
the largest of which serving as the reservoir of gasefied air is formed of a cylinder R
(see accompanying Drawing), in the interior of which at either end are fitted the
concentric gas and air tubes A, B, respectively. The pipe A is removable, to afford
access for cleaning the apparatus. The gas tube A is received for a portion of its
length within the air tube B, which latter extends rather more than one half the
length of reservoir R. The gas tube A is pierced obliquely with small holes t, so
Price 6d1

page_text: as to project the gas in fine streams and carry the air with it into the large tube R,
whence the gaseous mixture is discharged through the channel C and burns along
the whole length of the metallic plate, which forms the bottom of the apparatus.
When any considerable quantity of gas is to be consumed the apparatus may be
placed at a little distance from the bottom instead of being close up to the same,
to afford passage for an additional supply of air, more especially. when a wire
grating is placed on a level with the flame. The apparatus is partly enclosed by a
cover, so as to regulate the supply of air to the flaine issuing from the channel C.
The apparatus, together with the metallic plate, should be placed upon a stand, by
which the light and heat are reflected.
The volume of gas may, in certain cases, be increased by introducing gas obtained
from any source with the air-entering tube B.
A grating of iron, wire, or better, of platinum wire or asbestos, may be placed
opposite to and on a level with the sheet of flame to increase its intensity, and
various degrees of light may be thus obtained by varying the nature of the sub-
stances so employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henri Charles Gambier in the Great Seal Patent Office on the
12th April 1878.
"
HENRI CHARLES GAMBIER, Proprietor, of Paris, France. IMPROVEMENTS IN GAS
STOVES."
This new gas stove is composed of a fire-box (Figures 1. 2, 3,) heating and
mixing gas and air, then driving the mixture through a channel along a plane or
undulated surface, close to which it burns with a large and thin flame. This
surface, usually metallic, is shaped so as to be used for heating and lighting
purposes.
The construction of the gas apparatus mainly is founded on the following
principles: Gas is carried through a tube into a second tube or larger compart-
ment, which communicates, with atmospherical air. The gas then mixes with air
and passes by its own velocity into a third tube or larger compartment, which is
called "gaseous air reservoir." This third tube or compartment is provided with
a channel carrying the mixed gas into the atmosphere, passing over a surface of
any description, whereon it burns with a large and thin flame.
<
دو
The following is a description of an apparatus in its essential features for burning
gas with a large flame, the fitting of which to the under side of a metallic plate
constitutes the new stove, which I call "large flame gas stove." This is performed
with three concentric tubes. The largest of these tubes or
gaseous air reservoirs
consists of a cylinder R, as shown in the Drawing, through the two bottoms of
which passes the gas tube A at one end, and the air tube B at the other end. The
bottom carrying the tube A is removable for cleaning purposes. The gas tube A
is partly introduced into the air tube B, and is pierced with sunall oblique holes t,
through which escape thin jets of gas, carrying air during their passage into the

page_text: large tube R, whence the mixture of gas and air flows through the channel C to
burn along or close to a metallic plate S, forming the bottom of the stove.
When gas is to be burnt in large quantity, the apparatus, instead of being set
close to the bottom, may be fixed at a distance of about two or three-eighths of an
inch, to give way to a new layer of air. A cover K partly closes the gas apparatus
and regulates the arrival of external air on the flame along the channel. The
apparatus and its metallic back are generally placed on a bed plate, which reflects
light and heat.
In some cases one may increase the volume of gas by issuing with the air through
the tube B some gas produced by various matters.
Several matters, especially gridirons, alone, or covered with amianth, when set on
a level with the sheet or layer of flame, greatly increase the heat or the blaze, so
that the stove burns with various shades of light, according to materials.
When large stoves are required the following modifications are introduced into
the fire-box, Figure 4:-The two bottoms F, F, of the cylinder R, forming the
gaseous air reservoir, are respectively closed by means of a ring and stem, the
central hole of which carries an air tube B, B. These two tubes extend from the
bottom nearly (say, at about an inch distance) to the middle. A third ring is
provided in the middle of the cylinder, and divides it into two symmetrical parts; .
this ring has also a small rectangular stem placed in the channel for the escape of
the gas; it is provided with a central hole to carry the gas tube A, extending like
an axis in the cylinder on every side through the two tubes B, carrying the air
into the apparatus. Twelve small studs or pins on the gas tube at a, b, c, d,
(Figure 4) are used to centre the tubes.
The central ring (Figure 5) has a tubular projection for placing the gas pipe,
so that the gas passes into the gas tube (Figure 4) near the bottoms of which it
escapes through small oblique holes and flows, carrying some air through two ways
to the middle of the fire-box, whence it escapes through both channels to flame.
Both air tubes held by both rings, closing the bottoms of both fire-boxes, are
movable for cleaning purposes; to this effect a pin crosses them near their end.
Another small pin, slit at its top and arranged on the back of the stove above
the fire-box, receives the match to light the stove when the gas-cock is opened.
One may connect or provide several fire-boxes to get powerful stoves.
Having described the nature of my Invention, and the manner in which the same
is to be carried into effect, I declare that what I claim as my Invention is, the two
fire-boxes and particulars above described, as also the application of the large flame
system to various gas apparatus, constructed on the principle of a main gas pipe,
of main air pipe, and of a gaseous air reservoir; according to the shape of the
reservoir the chaunel may be straight or round.
In witness whereof, I, the said Henri Charles Gambier, have hereunto set my
hand and seal, this Tenth day of April, in the year of our Lord One
thousand eight hundred and seventy-eight.
יזוזזתוNA
CHER. (L.S.)
GAMBIER.