Improvements in or connected with Gas Burners.
Year: 1899

page_text: Cavalan
Date of Application, 7th July, 1809
7th Ont 4000 Accented 2nd line 1900
Date of Application, 7th July, 1899
Complete Specification Loft, 7th Oct., 1000 Accepted, 2nd June,
1000
PROVISIONAL SPECIFICATION. *
Improvements in or connected with Gas Burners.
We, JAMES ERNEST TATHAM, of 75, Somerleyton Road, Brixton, in the County
of London, Engineer, and JUNIUS LEONARD COPE, of 3, Wilson Street, Drury
Lane, in the County of London, Gentleman, do hereby declare the nature of
this invention to be as follows:-
This invention relates to. gas burners used in what is known as incandescent
gas lighting, that is to say burners in which the gas, passing to the place of
ignition, draws in air with it, the mixture of gas and air burning and render-
ing incandescent a hood, or mantle. In such burners, as hitherto made, it is
well known that they do not operate satisfactorily if the pressure be less than
one inch owing to the power of the gas to draw in air not being utilized effi-
ciently, resulting in incomplete mixture of the gas and air and imperfect com-
bustion. It is the object of this invention to overcome these objections and
to provide means whereby with a minimum consumption of gas, and at pres-
Bure varying from an inch to one inch, a flame of such a temperature is pro-
duced as to give a greatly improved lighting effect..
The gas inlet terminates in a nozzle situated in a mixing chamber, into
which open air ports in which chamber the air and gas become mixed and pass
upwards through pipes to the gauze at top, at which the mixture is ignited and
burns to render incandescent the hood, or mantle, which is supported in any
suitable way; for example, by a rod projecting axially through the gauze or
by a rod secured to the exterior of the burner and projecting in the form of
a hook above the centre of the gauze. The air ports are made in such a
manner as to have an upward direction, the angle of the said air ports being
the same or about the same as the angle of the exterior of the gas nozzle. In
practice we have found that an angle of, or about, thirty degrees to the axis
of the burner gives the best results and that the distance of the opening of
the gas nozzle above the upper side of the air ports should be one quarter of
an inch, or thereabouts. The tube pipes above the mixing chamber can be
arranged so that the one can be raised and lowered on the other, and be fixed
in position by a set screw. The height of the gas nozzle can also be regulated
by screwing it out from, or into, the mixing chamber, and fixing it in position
by a set screw. We may use also "hit-and-miss" air openings which can be
regulated by rotating the upper part of the mixing chamber upon the lower part,
a set screw being provided for fixing the parts in their adjusted position. We
may omit these openings, but it may be convenient to provide them, as they
can be completely closed when the gas is of ordinary quality, and they will be
useful to supply additional air in the event of the burners being used, with a
gas supply above the normal richness.

page_text: We, JAMES ERNEST TATHAM, of 75, Somerleyton Road, Brixton, in the County
of London, Engineer, and JUNIUS LEONARD COPE, of 3, Wilson Street, Drury
Lane, in the County of London, Gentleman, do hereby declare the nature of this
invention and in what manner the same is to be performed, to be particularly
secribed and ascertained in and by the following statement ;-
This invention relates to gas burners used in what is known as incandes-
cent gas lighting, that is to say, burners in which the gas, passing to the place
of ignition draws in air with it, the mixture of gas and air burning, and ren-
dering incandescent a hood; or mantle. In such burners as hitherto made it
is well known that, if the pressure be less than one inch, owing to the power of
the gas to draw in air not being utilized efficiently, the said burners do not.
operate efficiently the incomplete mixture of the air and gas, rendering the com-
bustion of the mixture imperfect.
It is the object of this invention to overcome this objection and to provide
means whereby, with a minimum consumption of gas, and with gas at a pres-
sure varying from a half an inch to an inch, a flame of such a temperature is
produced as to give a greatly improved lighting effect relatively to the amount
of gas consumed. We will describe the invention with reference to the accom-
panying drawings, Figure 1 being an elevation. Figure 2 a vertical section,
and Figure 3 a transverse section (on the line 1, 2, Figure 1), of so mucli of
a burner as is necessary to illustrato fhis invention. Figure 4 is a view like
Figure 1 but with a chimney, Figure 1 shewing the burner for use without a
chimney. a is the gas inlet, terminating in a nozzle a³, situated in a mixing
chamber b, into which open the air ports, in which chamber the gas and air
become mixed and pass upwards through the conical pipe c, and straight pipe &,
to the gauze e, at top, at which the mixture of gas and air is ignited and burns
to render incandescent the hood, or mantle, f, which is supported in any usual,
or suitable, way for example by a forked rod f, projecting axially through
the gauze e as shewn, or by a rod secured to the exterior of the burner and
projecting in the form of a hook above the centre of the gauze e. The air
ports are made in such a manner as to have an upward direction, as shewn
clearly in Figure 2, the angle of the said air ports b, being the same, or about
the same, as the angle of the exterior of the gas nozzle a³. In practice we have
found that an angle for the said air ports 63, of, or about, thirty degrees to the
axis of the burner, gives the best results, and that the distance of the opening
of the nozzle a², above the upper side of the air ports, should be one quarter
of an inch, or thereabouts. The tube is shewn as being arranged on the
conical tube c, so that it can be raised and lowered on the said tube c, and be
fixed in position by a set screw. The height of the nozzle a, can also be
regulated by screwing it out from, or into, the mixing chamber 6, and fixing
it in position by a set-screw. Al g we have shewn "hit-and-miss air openings
which can be regulated by rotating the upper part of the said chamber upon
the lower part. is a set screw for fixing the parts in their adjusted position
the said screw screwing through a hole in the outer part, and engaging with a
groove 3, in the inner part, so holding the parts in place upon each other. We
may omit the air openings g, but it is generally convenient to provide them as
they can be completely closed when the gas is of ordinary quality, and they will
be useful to supply additional air in the event of the burners being used with
a supply of gas above normal ricliness,
"

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what
we claim is:
―:
1. An incandescent gas burner in which the air-ports are directed upwards,
around, and below the orifice of, a gas inlet nozzle, and at an angle of, or about;
thirty degrees to the axis of the burner; substantially as herein before described.
2. In an incandescent gas burner; a conical gas-inlet nozzle projecting into
a mixing chamber into which open air ports around, and below the opening of,
the said nozzle, the said air ports being directed upwards at, or about, an angle
of thirty degrees to the axis of the burner, and the said gas inlet nozzle being
adjustable relatively to the air openings; substantially as herein before described.
3. An incandescent gas burner consisting of, or comprising, the combination
of a gas-inlet nozzle with air ports around it, and below its orifice, and directed
upwards as described, both the gas inlet nozzle,, and air ports, opening into a
mixing chamber from which chamber extend telescopically adjustable tubes the
upper one of which carries the gauze at which the gas and air mixture is
ignited; substantially as herein before described:
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.
420T
1300100
ARD
Dateu
THIS
JOHNSONS & WILLCOX,
47, Lincoln's Inn Fields, London, W.C., Agents.