Improvements in Gas Cooking Burners or Stoves.
Year: 1889

page_text: Complete Specification Left, 11th Oct., 1889-Accepted, 23rd Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Gas Cooking Burners or Stoves.
I EMIL MERZ, of Karlsruhe, Germany, Engineer do hereby declare the nature of
this invention to be as follows:-
This Invention relates to gas burners and gas stoves used for boiling and cooking;
and has for its object to provide a constant supply of hot water for scullery and other
purposos, the water being heated by tho waste heat from the gas burner without
impeding the supply of air thereto or interfering in any way with the use of the
burner or stove for boiling or cooking purposes.
Ordinary gas stoves are attended with the disadvantage that if warm water be
required whilst the stove is otherwise occupied it must be heated over a special burner
and in a special vessel to the exclusion of a second cooking vessel which might
otherwise be heated.
Gas stoves having the burner surrounded with tin vessels containing water to be
warmed by the radiating heat of the burner, impede the draught of air necessary
to combustion.
This Invention obviates these disadvantages by rendering unnecessary the use of a
special burner to warm water on a gas boiling stove without in any way interfering
with the supply of air to the flame.
This is effected by the peculiar construction and arrangement of the water heating
chamber. The main water heating chamber is placed at the underside of, and in
immediate metallic contact with, the ring shaped or other perforated tube or burner,
being cast in one therewith so as to be heated by conduction and conforming in its
general shape to that of the burner, that is to say being annular or straight according
as the burner is ring shaped or straight. The water chamber is broader in cross-
sectional area at the base than the diameter of the burner tube and its sides converge
towards the upper part until they merge with the sides of the burnor tube, so that it
presents no lateral obstruction which would impede the flow of air to the flames. This
water vessel is connected at top and bottom respectively by flow and return pipes,
with a separate reservoir chamber through which a constant circulation of water is
maintained so long as the stove is alight, the water heating chamber being heated by
conduction and also, when a cooking vessel is placed above the burner, by the heat
confined beneath the bottom of the said vessel. The heated water may be drawn off
for use from the reservoir or directly from the water-heater if a small quantity of
very hot water is required.
In addition to a water heating chamber below the burner, there may be a water
ring or tube above the level of, and around, the burner connected by tubular arms
with the main water chamber below, and so situated as to form the support for the
cooking vessel whilst leaving froo access of air to the burner. In this case, the flow
pipe would be connected to this upper water ring or tube and the connections with
the main water heater would be so arranged as to cause a thorough circulation of the
water.
The Invention is adapted to any form and construction of gas-heating burner or
stove, and by its means warm water is constantly available for use without any expense
for heating it.
.
.
"
1000

page_text: COMPLETE SPECIFICATION.
Improvements in Gas Cooking Burners or Stoves.
I EMIL MERZ of Karlsruhe Germany, 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 invention relates to gas burners and gas stoves used for boiling and cooking
and has for its object to provide a constant supply of hot water for scullery and other
purposes, the water being heated by the waste heat from the gas burner without
impeding the supply of air thereto or interfering in any way with the use of the
burner or stove for boiling or cooking purposes.
Ordinary gas stoves are attended with the disadvantage that if warm water be
required whilst the stove is otherwise occupied it must be heated over a special
burner and in a special vessel to the exclusion of a second cooking vessel which might
otherwise be heated while gas stoves having the burner surrounded with tin vessels
containing water to be warmed by the radiating heat of the burner, impede the
draught of air necessary to combustion.
This invention obviates these disadvantages by rendering unnecessary the use of a
special burner to warm water on a gas boiling stove without in any way interfering
with the supply of air to the flame, this result being obtained by the peculiar con-
struction and arrangement of the water heating chamber.
Reference is to be had to the accompanying drawings forming part of this specifica-
Sion wherein figure 1 represents an elevation figure 2 a vertical section and figure 3 a
plan of my improved gas cooking burnor or stove, the two latter figuros being drawn
to a larger scale. Figure 4 is a cross section and figure 5 a longitudinal section of a
modified form of burner or stove.
A is the main water heating chamber placed at the underside of and in immediate
metallic contact with the ring shaped or other perforated tube or burner a, being
cast in one therewith so as to be heated by conduction and conforming in its
general shape to that of the burner, that is to say boing annular or straight,
according as the burner is ring shaped or straight. The water chamber Å is
broader in cross sectional area at the base than the diameter of the burner tube a and
its sides converge towards the upper part until they merge with the sides of the
burner tube a, so that it presents no lateral obstruction which would impede the flow
of air to the flames. The water vessel A is connected at top and bottom respectively
by flow and return pipes dc with a separate reservoir chamber D through which a
constant circulation of water is maintained so long as the stove is alight, the water
heating chamber boing heated by conduction and also when a cooking vessel is
placed above the burner (as shown in figure 1) by the heat confined beneath the
bottom of the said vessel. The heated water may be drawn off for use from the
reservoir D or directly from the water heater A by means of pipes screwing on
nozzles ff if a small quantity only of very hot water is required.
In the arrangement shown in figures 4 and 5 in addition to a water heating
chamber A, below the burner a there is a water ring or tube A¹ above the level of,
and around the burner connected by tubular arms A' with the main water chamber A
bolow, and so situated as to form the support for the cooking vessel whilst leaving free
access of air to the burner as shown. In this case the flow pipe d would be connected
to this upper water ring or tube A' and the connections with the main water heater A
would be so arranged as to cause a thorough circulation of the water.
The invention is adapted to any form and construction of gas heating burner or
stove, and by its means warm water is constantly available for use without any extra
expense for heating it.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what I
claim is―
1. A gas cooking burner or stove consisting of a gas burner tube and a water

page_text: circulation chamber combined therewith so as to be heated by conduction and radiation
and so arranged as not to impede access of air to the burner or interfere with the use
of the latter, as described.
2. The gas cooking burner or stove consisting of the burner tube and combined
water circulation chamber and water ring forming also a support for the cooking
vessel substantially as described and shown in figures 4 and 5 of the drawings.
Dated this 11th day of October 1889.
By A. M. & Wm. Clark,
Itz.
E. NEPRZ.
53, Chancery Lane, London, Patent Agents.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.