Improvements in Atmospheric Burners for Gas Heating Stoves.
Year: 1898

page_text: Date of Application, 27th Aug., 1393
Complete Specification Left, 17th May, 1899-1ccepted, 15th July, 1899
PROVISIONAL SPECIFICATION.
Improvements in Atmospheric Burners for Gas Heating Stoves.
We, JoHN WILLIAM BERNARD WRIGHT, of 390, New John Street West, Bir-
mingham, Manufacturer, and HARRY DARWIN, of 110, Witton Lane, Birmingham,
Gas Engineer, do hereby declare the nature of our said invention to be as follows:
-
Our invention consists in the arrangement of a burner for use with gas heating
stoves by means of which the lighting or flashing back of the flame, which, in all
such stoves, is so a fruitful a cause of annoyance and injury to the stove, may be
completely avoided.
Numerous efforts have been made to attain this desired end, such efforts having
been mainly directed to that part of the burner at which the gas is admitted. In
our invention, on the contrary, we have directed our efforts to the part of the
burner from which the gas is emitted, our idea being to so arrange this part of
the burner that the frame shall be, so to speak, supported and defended against the
variations of the air currents or of the pressure of the gas, which are the main
causes of the objectionable lighting back.
To accomplish this, we take a burner constructed in the ordinary way, having
a gas inlet, an air inlet an injector tube and a suitably arranged mixing chamber.
Our attention is now directed to the orifice of this mixing chamber, from which
the flame in the ordinary burner emerges. Over this orifice, which itself rises
a short distance above the top of the mixing chamber, we arrange a cone closed
at the top and the sides, completely covering the orifice, and resting upon the
top of the mixing chamber, but leaving a space of th of an inch between its
top and the top of the orifice and its sides and the sides of the orifice. At the
bottom of this cone we provide small openings, running along its entire length,
through which the gas, after being mixed with air in the mixing-chamber, is
allowed to pass. For the concentration of this gas, so mixed and so passing
through the openings in our cone, and for its conduct to the point of ignition, we
provide another and an outer cone, which completely covers the before-men-
tioned cone, leaving but a space of th inch all round it. At the top, or apex, of
the cone we provide round openings, or teats, through which the flame burns.
The result of this dual cone is that no blast of air, beating down upon the flame,
or alteration in the force of gas or current of air passing into the burner has any
effect upon the flame in forcing it back to the gas inlet.
1000
GEORGE DOWNING & SONS,
8, Quality Court, London, W.C., Agents.

page_text: Improvements in Atmospheric Burners for Gas Heating Stoves.
We, JOHN WILLIAM BERNARD WRIGHT, of 390, New John Street West, Bir-
mingham, Manufacturer, and HARRY DARWIN, of 110, Witton Lane, Birmingham,
Gas Engineer, do hereby declare the nature of our said invention and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:-.
Our invention consists in the arrangement of a burner for use with gas heating
stoves, by means of which the lighting or flashing back of the flame, which, in
such stoves, is a fruitful cause of annoyance and injury to the stove, may be com-
pletely avoided.
Numerous effects have been made to attain this desired end, such effects having
been mainly directed to that part of the burner at which the gas is admitted. In
our invention, on the contrary, we have directed our efforts to the part of the
burner from which the gas mixture is emitted, our idea being to so arrange this
part of the burner that the flame shall be, so to speak, supported and defended
against the variations of the air currents or of the pressure of the gas, which are
the main causes of the objectionable lighting back.
And in order that our said invention may be particularly described and ascer-
tained reference is hereby made to the the accompanying drawings, in which
similar letters of reference indicate corresponding parts.
Fig. 1 is an elevation, partly in section, and Fig. 2 is a section at right angles
to Fig. 1.
a is the mixing chamber of the burner formed with an air inlet and a plate c
with a raised lip d above the mixing chamber. e is a double-ended gas inlet, fitted
with perforated nozzles f, as shown. is a cone supported above the mixing
chamber, and either sustained in position by screws as shown, or provided with
projections resting upon the plate having a space for the passage of the gas and
air as indicated by the arrows. is the outer cone, which is cemented to the lower
portion of the burner, by means of which the mixed gas and air becomes concen-
trated and conducted to the point or points of ignition k.
The result of using the two cones, as described, is that no blast of air, beating
down upon the flame, or alteration in the force of gas or currents of air passing
into the burner, has any effect upon the flame, in forcing it back to the gas inlet.
It is obvious that the form of the burner may be so modified as to apply our
invention to burners having, one, two, or any other number of teats or emission
ports.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In atmospheric burners for gas-heating stoves, the combination of a mixing
chamber a, and cones y and arranged above such mixing chamber, substantially
as and for the purposes described.
2. The improved burner for gas-heating stoves constructed and arranged sub-
stantially as set forth.
GEORGE DOWNING & SONS,
S, Quality Court, London, W.C., Agents for the Applicants.