Improvements in or pertaining to Spirit-burners, Specially Applicable to Cooking Apparatus
Year: 1890

page_text: Date of Application, 14.h Jan., 1890
Complete Specification Left, 14th Oct., 1890-Accepted, 15th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in or pertaining to Spirit-burners, Specially Applicable
to Cooking Apparatus.
I WILHELM EGLOFF, of Zurich, Switzerland, Hardware Manufacturer, do hereby
declare the nature of said invention to be as follows:-
A spirit burner according to this invention comprises a central double burner with
a slide regulator and is capable of being regulated to the smallest flame.
Cooking apparatus provided with a burner according to this invention are
particularly suitable for boiling milk, as they permit of the operation being con-
veniently continued until the germs injurious to health present in the milk are
rendered innocuous, without fear of the milk boiling over or burning.
Any desired amount of flame within the capacity of the burner can be obtained by
varying the quantity of air supplied..
A cooking apparatus and burner is illustrated by way of example in the annexed
drawings in which :-
Fig. 1 is a vertical section.
Fig. 2 is an elevation.
Fig. 3 is a plan with the cooking vessel removed.
Figs. 4 and 5 illustrate in elevation the regulating device for the burner in a closed
and in an opened condition respectively and to a larger scale.
Figs. 4 and 5 are corresponding sectional plans.
Fig. 6 illustrates in section and to a larger scale a portion of the entire
burner, the closing cap being removed, and the regulating device being half opened.
Fig. 6 is a horizontal section through the upper part of the burner.
Upon a base plate a provided with a handle d is a vessel b for the spirit.
In the middle of the vessel b is a casing which extends downwards to the bottom
of the vessel and projects upwards to a certain extent out of it.
Within this casing is a round wick k, and within the latter is arranged a tube i,
closed at the top and provided with lateral openings 1º. It is furnished internally
with an absorbent mass a (such for example as a wick core).
Suitable channels or passages lead from the reservoir to the circular wick k and
to the wick core x.
At some distance from and concentric to the tube i there is fixed on the vessel b,
a sheet metal cylinder provided with slits or slots m.
A similar sheet metal cylinder l' provided with corresponding openings m¹ and
with a handle 2 is arranged so as to be capable of rotation about the cylinder l.
A sheet metal cylinder n provided with a cover n' is adapted to be screwed in
between the tube i and the cylinders / l'.
On the vessel b are arranged supports e e¹ e² for supporting the cooking vessel g
which is furnished with a cover p and handle o. These supports are preferably provided
at the top with a rim f.
In order to put the cooking apparatus into operation, the cylinder n n¹ is removed,
the openings m and m¹ of the sheet metal cylinders and are brought over one
another, and then the wick k is ignited.
The outer flame now heats the tube i so, that in a very short time a flame produced
by the gasification of the spirit sucked up by the mass a, issues from the openings
(Figs. 5 and 5).
When the liquid in the cooking vessel g boils, and if it be desired to let it continue
to boil very gently, the cylinder is rotated, so that its openings m' shall not coincide
any longer with the openings m of the cylinder 1; then the flame of the wick k is
extinguished on account of the complete stoppage of the supply of air, and only the
small gas flames continue to burn at the openings (Figures 4 and 4°).

page_text: If it be desired to continue boiling a little more vigorously, or it may be, very
vigorously, the cylinders and l' are placed in such relation to each other that the
openings m¹ come more or less over the openings m; whereby the flame of the
wick is caused to burn stronger or weaker in consequence of the varying supply of
air (Fig. 6").
By screwing in the cover n n¹ the flame is completely extinguished.
W. LLOYD WISE,
Per F. J. Brougham,
46. Lincoln's Inn Fields, London, W.C., Agent for the Applicant.
COMI LEIE SPECIFICATION.
Improvements in or pertaining to Spirit-burners, Specially Applicable
to Cooking Apparatus.
I, WILHELM EGLOFF, of Zurich, Switzerland, Hardware Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly described and ascertained in and by the following
statement:—
A spirit burner according to this invention comprises a central double burner
having a slide-regulator and capable of being regulated so as to produce a very small
flame.
Cooking apparatus provided with a burner according to this invention is
particularly suitable for boiling milk, as it permits of the boiling being conveniently
continued until germs injurious to health present in the milk are rendered innocuous,
without fear of the milk boiling over or burning.
By the construction of burner adopted any desired size of flame within the capacity
of the burner can be obtained by varying the quantity of air supplied.
A cooking apparatus and burner according to this invention are illustrated by
way of example in the drawings filed with my Provisional Specification.
Referring to these drawings,
Fig. 1 is a vertical section; and
Fig. 2 an elevation of the cooking apparatus and burner.
Fig. 3 is a plan with the cooking vessel removed.
Figs. 4 and 5 illustrate in elevation the burner regulating device in the closed
position and in the opened position respectively, and to a larger scale.
Figs. 4 and 5 are corresponding sectional plans.
Fig. illustrates in vertical section and to a larger scale a portion of the burner,
the closing cap being removed, and the regulating device being half opened.
Fig. 6 is a corresponding horizontal section through the upper part of the
burner.
Upon a base plate a provided with a handle d is a vessel 6 for the spirit. Centrally
within this vessel b is a casing which extends downwards to the bottom of
the vessel and projects upwards to a certain extent outside of it.
Within this casing
is a round wick k (Fig. 6) within which is arranged a tube i, closed at the top and
provided with lateral openings 20. This tube i is furnished internally with a wick
or an absorbent mass (such for example as a wick core). Suitable channels or
passages in the casing and tube i permit of spirit passing from the vessel or
reservoir to the circular wick k and to the wick core a.
At some distance from and concentric to the tube i there is fixed on the vessel b, a
sheet metal cylinder provided with slits or slots m. A similar sheet metal cylinder /¹
provided with corresponding openings m¹ and with a handle is arranged so as to
be capable of rotation about the cylinder 1. A sheet metal cylinder n provided with
a cover n is adapted to be screwed in between the tube i and the cylinders 1, P. On
the vessel b are arranged supports e, et, e² for supporting the cooking vessel a

page_text: which is furnished with a cover p and handle o. These supports are preferably
provided at the top with a rimj
In order to put the cooking apparatus into operation, the cylinder n n' is removed,
the openings m and m¹ of the sheet metal cylinders and are brought over or
opposite one another, and then the wick k is ignited. The outer flame thus obtained
now heats the tube i so that in a very short time a flame produced by the gasification
of the spirit sucked up by the mass a, issues from the openings 10 (Fig. 5). When the
liquid in the cooking vessel g boils, and if it be desired to let it continue to boil very
gently, the cylinder is rotated so that its openings m¹ shall no longer coincide with
the openings m of the cylinder 1; the flame of the wick k will then be extinguished
on account of the complete stoppage of the supply of air to this flame, and only the
small gas flames will continue to burn at the openings (Fig. 4). If it be desired
to effect the boiling a little more vigorously, or it may be very vigorously, the
cylinders and are so turned in relation to each other that the openings m¹ are
brought more or less over or opposite the openings m. By this means the flame of
the wick k, which is re-ignited when air again passes through the openings m m',
can be caused to burn stronger or weaker in accordance with the varying supply of air
(Fig 6). By screwing in the cover n n' after the outer flame has been extinguished,
the inner flame can be completely extinguished.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. For cooking apparatus suitable for boiling milk, and other purposes, a spirit
burner comprising a spirit vessel provided with an outer annular wick k, and a
central wick or absorbent mass a arranged to extend upward above the level of the
spirit, and a cap-like casing or tube i arranged between the two wicks, in communi-
cation with the vessel, and provided at top with openings for escape of gas, the outer
annular wick serving to produce a flame not only for heating the cooking vessel, but
mainly for heating the casing or tube i for the purpose of generating gas or vapour
therein.
2. The combination with a burner of the kind referred to in the preceding claim,
of means for regulating the supply of air to the outer flame, said means comprising
the concentric annular cylinders arranged externally to the wick and formed
with air-regulating openings m m situated below the openings for escape of gas
from the casing or tube i and having their lower edges approximately level with the
annular wick k as described and shown.
T
11
109
1900