Year: 1886

page_text: Date of Application, 30th Dec., 1886
Complete Left, 26th Sept., 1887
Complete Accepted, 28th Oct., 1887
We, RICHARD PINTSCH and OSKAR PINTSCH, both of 72 and 73 Andreasstrasse,
Berlin, O, German Empire, Manufacturers do hereby declare the nature of this
invention to be as follows:-
This invention relates to gas burners.
The Bunsen burner heretofore known cannot be employed for lighting purposes
when using a solid body rendered incandescent by the flame, because, when the
pressure at which the gases burn is normal, a disagreeable noise is produced, which
is, moreover, increased owing to the use of the chimneys by which such burner must
be surrounded.
Attempts have been made to prevent this noise by emitting the gas through a
number of openings or arranging partition plates in the upper part of the burner:
the noise however, is not suppressed by these means.
Furthermore, it is necessary to preserve the elongated form of the flame when the
intensity of the heat is greatest in order that the solid body can be heated to
incandescence which is impossible, for instance in the use of the small openings,
arranged around an Argand ring burner..
The means hereinafter described for successfully preventing the disagreeable noise
will be easily understood by bearing in mind the condition of the flame of an ordinary
Bunsen burner. Such a flame presents immediately above the orifice of the burner
tube, a conoidal core of bluish green colour, contiguous to which is the considerably
less luminous and almost colourless larger part of the flame.
Within the conoidal core is seen a dark space, so that the bluish green part of the
flame constitutes as it were, only a casing. Owing to the movements of the flame in this
casing it may be concluded that at this point a kind of explosive combustion takes
place, or that currents are caused which create the noise of the flame. Now, by
inserting a body of any shape within the burner tube the shape of the casing of flame
is changed, but the noise is not prevented. The latter ceases, however, immediately
that a solid body which has nearly the shape of the core, is placed in the flame, above
the burner orifice; or that the orifice of the burner is covered to cause the mixture of

page_text: gas to issue only in fine jets, so as to preserve the shape of the flame to prevent
currents and explosions being caused in the core of the flame.
In constructing a burner according to our invention the upper part of the tube is,
preferably made somewhat wider than the other part, and the conoidal body is con-
nected with the tube by means of a perforated disc. In a burner of this kind a bluish
green core is also formed the dark core however entirely disappears; no movements
are observed in the bluish casing the explosions and motions of the gas mixture
cease, the noise is completely prevented; and the flame burns quietly, very steadily
and intensively, which, for effecting the incandescence of the solid illuminating body,
is of special utility.
;
The shape of the perforations in the disc is optional, but it is preferable to
provide this disc with long teeth at the circumference after the manner of a
toothed wheel.
The cone can, moreover, be shaped to serve itself as a burner for an igniting jet.
For this purpose it is provided with a fine central hole, and supplied with gas through
a small pipe arranged in the burner tube.
The introduction of gas to the said tube is effected through a circular slide arranged
in the base of the burner. This slide is provided with one or more holes through
which gas can pass from the conduit to a small chamber covered by. a perforated disc
in the upper part of the slide, if the holes of the slide coincide with other holes formed
in the upper surface of the base of the burner; but if the slide is turned through a
certain angle, the holes are closed. The admission of gas to the main burner is then
stopped, and a small accessory hole in the slide which hole communicates with the
igniting burner pipe is connected with one of the holes in the base; accordingly only
the igniting burner of the cone is supplied with gas. The said slide can be operated
through the medium of a knob and is pressed upon the upper surface of the base by
a spring. This spring is of annular shape, and provided with two projections. It is
introduced into the burner tube through a suitable opening from the side into the
burner casing, and is supported by means of projections entering incisions of the
said opening. Through the latter the knob of the slide extends to the outside.
We sometimes provide a Bunsen burner of the kind last described but adapted to
consume a smaller quantity of gas. This burner carries a stop slide which can be
moved rectilinearly and carries a cone directly upon the igniting burner tube.
In one position of the slide only the cone is supplied with gas, the opening which
serves to conduct gas to the Bunsen burner being closed. If the slide is displaced
the opening becomes free, and the Bunsen burner is supplied. A spring serves to
press the slide tightly upon the base. The burner can be closed by a disc provided at
the circumference with indentations through which the combustible mixture of gas and
air leaves the burner. The central full part of the plate prevents the admission of
the combustible mixture to the space within the flame. The said plate can be
provided with an igniting burner, as hereinbefore described.
Dated this 30th day of December 1886
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.

page_text: Improvements in Gas-burners.
We, RICHARD PINTSCH, and OSKAR PINTSCH, both of 72 and 73 Andreasstrasse,
Berlin, O, German Empire, Manufacturers, 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 invention relates to gas burners.
The Bunsen burner heretofore known cannot be employed for lighting purposes
when using a solid body rendered incandescent by the flame, because, when the
pressure at which the gases burn is normal, a disagreeable noise is produced which is,
moreover, increased owing to the use of the chimneys by which such burner must
be surrounded.
Attempts have been made to prevent this noise by emitting the gas through a
number of openings, or arranging partition plates in the upper part of the burner;
the noise however is not suppressed by these means.
Furthermore, it is necessary to preserve the elongated form of the flame when the
intensity of the heat is greatest, in order that the solid body can be heated to
incandescence, which is impossible, for instance, in the use of the small openings,
arranged around an Argand ring burner.
The ineans hereinafter described for successfully preventing the disagreeable_noise
will be easily understood by bearing in mind the condition of the flame of an ordinary
Bunsen burner. Such a flame presents as shown in Figure 1, immediately above the
orifice a a of the burner tube A a conoidal core a ba of bluish green colour, con-
tiguous to which, is the considerably less luminous and almost colourless larger
part a da of the flame.
Within the conoidal core a ba is seen a dark space a fa so that the bluish green
part of the flame constitutes, as it were; only a casing afa ba. Owing to the move-
ments of the flame in this casing afa ba it may be concluded that at this point a kind
of explosive combustion takes place, or that currents are caused, which create the
noise of the flame. Now, by inserting a body of any shape within the burner tube
the shape of the casing of flame abafa is changed, but the noise is not prevented.
The latter ceases however immediately a solid body which has nearly the shape of the
core is placed in the flame, above the burner orifice, a fa, or that the orifice of the
burner is covered to cause the mixture of gas to issue only in fine jets so as to
preserve the shape of the flame, to prevent currents and explosions being caused in
the core of the flame.
Figure 2 shows a burner, constructed according to our invention the upper part of
the tube A is preferably made somewhat wider than the other part and the conoidal
body B is connected with the tube A by means of a perforated disc D. In a burner
of this kind a bluish green core a ba is also formed, the dark core however entirely
disappears, no movements are observed in the bluish casing a ba; the explosions and
motions of the gas mixture cease; the noise is completely prevented; and the flame
burns quietly, very steadily and intensively, which for effecting the incandescence of
the solid illuminating body is of special utility.
The shape of the perforations in the disc Dis optional, but it is preferable to provide
this disc with, long teeth i at the circumference, after the manner of a toothed wheel
as shown in Figure 5.
.

page_text: The cone B can moreover be shaped to serve itself as a burner for an igniting jet.
For this purpose it is provided with a fine central hole o Figure 3, and supplied with
gas through a small pipe g arranged in the burner tube A.
The introduction of gas to the said tube is effected through a circular slide G,
arranged in the base of the burner as shown in Figures 8 and 9 respectively. This
slide is provided with one or more holes m through which gas can pass from the
conduit to a small chamber covered by a perforated disc r, in the upper part of the
slide G, Figure 3, if the holes m of the slide coincide with other holes m¹ formed in
the upper surface of the base H of the burner Figure 6, but if the slide G is turned
through a certain angle, the holes m are closed. The admission of gas to the main
burner is then stopped, and a small accessory hole n in the slide G which hole
communicates with the igniting burner pipe g is connected with one of the holes m¹
in the base; accordingly only the igniting burner of the cone B is supplied
with gas.
The said slide G can be operated through the medium of a knob p Figures 4, 8
and 9, and is pressed upon the upper surface of the base H by a spring S Figure 10.
This spring is of annular shape, and provided with two projections s'. It is introduced
into the burner tube through a suitable opening t, Figure 7 from the side into the
burner casing, and is supported by means of the projections s' entering incisions of
the said opening & Figure 4. Through the latter the knob p of the slide G extends to
the outside.
Figures 11 to 15 show a Bunsen burner of the kind last described but adapted to
consume a smaller quantity of gas. This burner carries a stop slide K which can be
moved rectilinearly, Figure 14, and carries a cone directly upon the igniting
burner tube g.
In one position of the slide Figure 12 only the cone B is supplied with gas, the
opening m which serves to conduct gas to the Bunsen burner being closed. If the
slide K is displaced in the direction of the arrow Figure 12, the opening m becomes
free, and the Bunsen burner is supplied; a springs Figure 15, serves to press the
slide K tightly upon the base H.
Figure 16 shows a burner which can be closed by a disc D provided at the
circumference with indentations through which the combustible mixture of gas and
air leaves the burner. The central full part of the plate D prevents the admission of
the combustible mixture to the space a ba within the flame Figure 1. The said
plate D can be provided with an igniting burner, as herein before described.
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 :-
First. A Bunsen burner for incandescent gas lighting in which a conoidal body (B)
is arranged above the burner orifice, or the latter closed by a plate (D) provided
with openings only on the circumference or in proximity to the same, for the purpose
of obviating explosions in the flame above the burner orifice, and consequently the
disagreeable noise of the flame.
Second. In the burner characterized in the first claim, the employment of the
conoidal body (B) or the plate (D) as an igniting burner, and in combination therewith
the pipe (g) supplying the same and the circular slide G or the slide K in the base of
the burner respectively substantially as described.
J11th at Quentumtion 1007
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London,
Agents for the Applicants.