Improvements in Gas-nozzles for Bunsen-burners, and the like.
Year: 1897

page_text: Date of Application, 25th Nov., 1897
Complete Specification Left, 23rd Aug., 1898-Accepted, 12th Nov., 1898
PROVISIONAL SPECIFICATION.
Improvements in Gas-nozzles for Bunsen-burners, and the like.
1, MAX SEILEK, of 44, Adalbert Strasse, of Berlin, Kingdom of Prussia, German
Empire, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to improvements in gas nozzles for Bunsen-burners and the
like, more especially of the kind employed for incandescent light, and has for its
object to facilitate the regulation of the flow of gas to the burner by the employ-
ment of a valve or the like in said nozzle.
It is known, that hitherto such regulation, especially in the case of Buusen-
burners has presented many difficulties, for the reason that, the nozzles usually
employed for this purpose have possessed a number of fine holes, said holes, (for
purposes of regulation), subsequently being increased or decreased in size as
required.
To obviate these disadvantages is the object of my invention, which consists in
the employment of an improved nozzle and valve combined, hereinafter described
and shown in the accompanying drawing, in which
Figure 1, shows my improved nozzle and valve, the valve being fully open,
Figure 2, shows the valve partly open, and
Figure 3, the rapid mixing with air, which occurs as soon as the gas has passed
the valve and entered the larger surface of the nozzle.
My improvements consist more especially, as hereinbefore indicated, in the
insertion in the nozzle proper of a Bunsen burner, a small valve, said valve being
as near the top of the nozzle, as is conveniently possible, and provided on both sides
with flat surfaces, in such manner, that when the valve is turned, two equal channels
are formed on both sides of the valve, (see Figure 1).
It will be clear, that these channels will only allow two equal gas-streams of com-
paratively small diameter to pass.
The gas now enters the nozzle, and, as will be clear, must be retarded in speed,
and in consequence of the larger surface of the nozzle, expands and mixes thoroughly
and violently with air. The air- and gas mixture thus obtained now enters the
burner at the right speed, or, more precisely, at a reduced speed, and thus produces
the required blue flame.
The principal feature therefore, of my improvements resides in causing the gas
entering the nozzle to expand, secondly, to be reduced in speed in consequence of
the larger surface of the nozzle, and to be thoroughly mixed with air in the manner
hereinbefore described.
Furthermore the mixture of gas and air in the nozzle is very rapid, more especially
in view of the fact, that such mixture is facilitated by the reduced speed of the gas
flow within the nozzle.
That a large surface is necessary for the proper mixture of gas and air has been
proved by practical experience, for instance, when the proportion of the mixture is

page_text: not a perfect one, the flame burns in the present known manner of the "Auer"-
burner with a light greenish blue circle underneath same. When, however, the
valve is again turned to its right position, and the proportion of the gas- and air-
mixture and the speed of the same thus restored, a flame of at least 50% stronger
light is attained, and the light greenish blue circle disappears.
That this effect is produced, can easily be proved by a simple trial or test of my
improved gas-nozzle.
In the drawing a represents the casing of the nozzle, h the nozzle proper,
c the small valve located near the top of the nozzle, and provided with two
lateral Hat surfaces o forming the valve. The remaining parts are familiar
and not claimed.
As indicated, Figure 1, shows the position of the valve, in which the two Hat
surfaces are in such position, that the gas can flow to an equal extent through
both sides of the valve.
Figure 2, shows the valve only partly open, consequently allowing a smaller
quantity of gas to pass.
It has been hereinbefore indicated, that hitherto such gas-nozzles have been
provided with small holes or perforations. It will be clear, however, that these holes '
must separate the gas into small jets, which, when mixed with air, cause the gas to
flow to the burner with considerable commencing velocity.
My improved burner, however, has the object of reducing the commencing speed,
for the purpose of obtaining a flow of gas of considerably increased volume.
It is also clear, that my system can be used by anyone, and that my improvements
can be adapted for varying gas-pressures.
Moreover, the gas-inlet to the nozzle can be regulated according to requirements
for a large or small flame and the valve adjusted to suit varying gas-pressures.
I reserve the right, to vary the form or size of my improved valve, or of the
nozzle, the main feature of my invention being, as mentioned, not simply in the
employment of a valve in the nozzle, but in so arranging such valve, that the
gas is
retarded in speed by the larger surface of the nozzle, and the consequent more
thorough and rapid mixture of gas and air effected, by means of which a gas flow
of increased volume and reduced speed is caused to pass to the burner.
A further important feature of my invention resides in the fact, that the gas-
valve inlets are of varying height, so that two gas streams are produced, which,
during the misture with air, expand, as shown in the drawing at
and y,
cross each other, and whirl in constantly varying directions.
Dated this 25th day of November 1897.
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.
Improvements in Gas-nozzles for Bunsen-burners, and the like.
I, MAX SEILER, of 44, Adalbert Strasse, of Berlin, Kingdom of Prussia, German
Empire, Engineer, do hereby declare the nature of this invention, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :-
This invontion relates to improvements in gas-nozzles for Bunsen-burners and

page_text: the like, more especially of the kind employed for incandescent light, and has for
its object to facilitate the regulation of the flow of gas to the burner by the employ-
ment of a valve or the like in said nozzle.
It is known, that hitherto such regulation, especially in the case of Bunsen-
burners has presented many difficulties, for the reason that, the nozzles usually
employed for this purpose have possessed a number of fine holes, said holes (for
purposes of regulation), subsequently being increased or decreased in size as
required.
To obviate these disadvantages is the object of my invention, which consists in
the employment of an improved nozzle and valve combined, hereinafter described
and shown in the drawing, in which:
Figure 1, shows my improved nozzle and valve, the valve being fully open.
Figure 2, shows the valve partly open, and
Figure 3, the rapid mixing with air, which occurs as soon as the gas has passed
the valve and entered the larger surface of the nozzle.
My improvements consist moro especially, as herein before indicated, in the
insertion in the nozzle proper of a Bunsen burner, of a small valve, said valve being
as near the top of the nozzle, as is conveniently possible, and provided on both sides
with flat surfaces, in such manner, that when the valve is turned, two channels o o¹
are formed on both sides of the valvo (see Figures 2, and 3).
It will be clear, that these channels will only allow two gas-streams of
comparatively small diameter to pass.
The gas now enters the nozzle and, as will be clear, must be retarded in speed,
and in consequence of the larger surface of the nozzle, expands and mixes
thoroughly and violently with air. The air and gas-mixture thus obtained now
enters the burner at the right speed or, more precisely, at a reduced speed, and
thus produces the required blue flame.
The principal feature therefore, of my improvements resides in causing the gas
entering the nozzle to expand, secondly to be reduced in speed in consequence of
the larger surface of the nozzle, and to be thoroughly mixed with air in the manner
hereinbefore described.
Furthermore the mixture of gas and air in the nozzle is very rapid, more
especially in view of the fact, that such mixture is facilitated by the reduced speed
of the gas flow, within the nozzle.
That a large surface is necessary for the proper mixture of gas and air has
been proved by practical experience, for instance, when the proportion of the
mixture is not a perfect one, the flame burns in the present known manner of the
Aner-burner with a light greenish blue circle underneath same.
When however,
the valve is again turned to its right position, and the proportion of the gas- and
air-mixture and the speed of the saine thus restored, a flame of at least 50%
stronger light is attained, and the light greenish blue circle disappears.
That this effect is produced, can easily be proved by a simple trial or test of my
improved gas-nozzle.
In the drawing a represents the casing of the nozzle; in the nozzle proper, c the
small valve located near the top of the nozzle, and provided with two lateral flat
surfaces, which form the valve, as shown on the drawing. The remaining parts
are familiar and not claimed.
As indicated Figure 1 shows the position of the valve, in which the two flat
surfaces are in such position, that the gas can flow to an equal extent through both
sides of the valve.
Figure shows the valve only partly open, consequently allowing a smaller
quantity of gas to pass.
It has been herein before indicated, that hitherto such gas-nozzles have been
provided with small holes or perforations. It will be clear however, that these
holes must separate the gas into small jets, which, when mixed with air, cause the
gas to flow to the burner with considerable commencing velocity.

page_text: My improved burner, however, has the object of reducing the commencing
speed, for the purpose of obtaining a How of gas of considerably increased
volume.
It is also clear that my improvements can be adapted for varying gas-pressures.
Moreover, the gas-inlet to the nozzle can be regulated according to
requirements for a large or small flame and the valve adjusted to suit varying gas-
pressures.
I reserve the right, to vary the form or size of my improved valve or of the
nozzle, the main feature of my invention being, as mentioned, not simply in
the employment of a valve in the nozzle, but in so arrauging such valve, that the
gas is retarded in speed by the larger surface of the nozzle, and the consequent
more thorough and rapid mixture of gas and air effected, by means of which
a gas flame of increased volume and reduced speed is caused to flow to the
burner.
A further important feature of my invention resides in the fact that the gas
valve inlets are of varying height so that two gas-streams are produced, which,
during the mixture with air, expand, cross each other and whirl in constantly
varying directions.
">
In the hitherto known conical or other shaped valve-parts of nozzles for incan-
descent burners, a variation in the size or thickness of the conical portion of the
valve proper, or an adjustment of said valve, may it is true, regulate "the quantity
of the gas conducted to the burner, but such arrangements do not operate to produce
a better mixing of the gas with the air, or in other words, do not effect the
whirling motion" of the gas-mixture so necessary for the production of the proper
flame.
In my improved nozzle however, I effect a decrease of the suction action by a
throttling of the gas-nozzle and by arranging, as hereinbefore indicated, the
regulating valve just under the outlet of the nozzle, and by imparting to the valve
or regulating cock, such a form, that not only are two inlet openings or channels
produced, but furthermore, these said right and lefthand channels (to the right
and left of the valve proper), have differing heights, as regards the nozzle-outlet,
and as hereinafter more fully described.
This is effected in the following manner:
The valve-portion proper consists of a narrow rib or plate e which, when in a
slanting position, will, as is clear, form a lefthand channel o' and a righthand
channel o.
It will also be seen that the righthand channel is nearer the nozzle ontlet, or
in other words, higher than the lefthand channel o. Hereby, in consequence of
the two outgoing gas-currents, passing as above mentioned from the nozzle, at
varying heights, the berein before-described whirling of the gas is produced, or in
other words, a thorough expansion or fine distribution of the gas is effected, and
a thorough mixing of the gas with the air produced.
Thus by the employment of my improved nozzle not only can the quantity of the
gas be exactly regulated, but it is also possible by means of the slanting position
of the before said rib or valve proper c to employ somewhat larger gas-openings,
than has hitherto been considered necessary when the rib or valve portion proper
was exactly perpendicular or straight, and by suitably slanting this valve-portion
proper to produce, as herein before mentioned, a thorough mixing of the gas with
the air in a mauner hitherto not attained.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
A gas nozzle for Bunsen-burners, characterized by the arrangement of a
regulating valve, directly under the outlet m of the gas uozzle, the valve portion
proper being formed by a narrow rib or the like c, whereby, upon the said valve-

page_text: rib being brought into a slanting position, two gas currents are obtained, which
pass out of the nozzle at varying distances from the top of said nozzle, for the
purpose and substantially as described.
Dated this 23rd day of August 1898.
J. P. BAYLY,
18, Fulham Place, London, W., Agent for the Applicant.