An Improvement in Gas Heaters.
Year: 1888

page_text: Date of Application, 19th May, 1888
Complete Specification Left, 18th Feb., 1889
Complete Specification Accepted, 23rd Mar., 1889
PROVISIONAL SPECIFICATION.
An Improvement in Gas Heaters.
1, ISIDORE SPIELMANN of No. 3 Westbourne Crescent, Hyde Park, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention to be as
follows:-
In my Specification No. 1509 of 1885 I described a gas heater having a kind of
Bunsen burner supported by a spring and connected to a gas supply valve in such a
manner that the supply of gas was given only when the weight of a pan or other
vessel resting on the burner pressed it down in opposition to the spring and thus
opened the valve, allowing gas to pass to the burner. On removing the pan or other
vessel, the valve for supply of gas to the burner was automatically closed, but a by
pass was opened supplying a small jet which remained ready to ignite the main burner
when it was again required. My present invention relates to a more compact and
simple construction of heater arranged to act in the way above described. In this
heater the gas is supplied at the lower part immediately under a spring valve the
stem of which extends upwards a little above the level of three brackets on which the
vessel to be heated is placed, part of the weight of the vessel when it is so placed
pressing down the valve stem and so opening the valve. The gas passing the opened
valve issues in a jet directed horizontally along a tube under the burner, this tube
having lateral holes by which air is drawn in to mix with the gas. The mixture of
air and gas ascends from the horizontal tube into a space above, preferably circular,
which is covered with wire gauze to ensure more thorough mixture and distribution
of the gas and air and to prevent the flame from striking back. Above the gauze
there is a cover having through it a number of holes arranged in rows, through which
holes the mixture issues forming a number of flames immediately under the vessel to
be heated, while air is free to pass between the rows and supply these flames. On
removing the vessel, the stem of the gas supply valve being free to rise, the valve is
Price 8277

page_text: closed by the spring and the main burner is extinguished. But, the stem of the valve
being tubular, gas finds its way through it entering at the bottom of the stem and
issuing from a small lateral hole in a jet immediately above the main burner, ready
to ignite it when required.
Dated this 19th day of May 1888.
An Improvement in Gas Heaters.
I, ISIDORE SPIELMANN, of No. 3 Westbourne Crescent, Hyde Park, in the County
of Middlesex, Engineer, do hereby declare the nature of this invention and in what
manner the same to be performed to be particularly described and ascertained
in and by the following statement :-
In my Specification No. 1509 of 1885 I described a gas heater having a kind of
Bunsen burner supported by a spring and connected to a gas supply valve in such a
manner that the supply of gas was given only when the weight of a pan or other
vessel resting on the burner pressed it down in opposition to the spring and thus
opened the valve allowing gas to pass to the burner.
On removing the pan or other vessel, the valve for supply of gas to the burner was
automatically closed but a by-pass was opened supplying a small jet which remained
ready to ignite the main burner when it was again required.
My present invention relates to a more compact and simple construction of heater
arranged to act in the way above described, as I shall describe referring to the
accompanying drawings.
Fig. 1 is a vertical section of a heater according to my present invention, and
Fig. 2 is a perspective view of the same with a modified form of support for the
heated vessel. In this heater, the gas is supplied at A immediately under a spring
valve B the stem of which extends upwards a little above the level of three
brackets D on which the vessel to be heated is placed, part of the weight of the
vessel when it is so placed pressing down the valve stem C and so opening the
valve B. The gas, passing the opened valve, issues in a jet at E directed horizontally
along a tube Funder the burner this tube having an opening at the end by which air
is drawn in to mix with the gas. The mixture of air and gas ascends from the
horizontal tube F into a space G above, preferably circular, which is covered with
wire gauze H to ensure more thorough mixture and distribution of the gas and ai

page_text: and to prevent the flame from striking back. Above the gauze H there is a
cover Khaving through it a number of holes L arranged in rows through which holes
the mixture issues forming a number of flames immediately under the vessel to be
heated while air is free to pass between the rows and supply these flames.
On removing the vessel the stem C of the gas supply valve being free to rise, the
valve B is closed by the spring and the main burner is extinguished. But the stem C
of the valve being tubular, gas finds its way through it, entering at the bottom of the
stem and issuing from a small lateral hole M in a jet immediately above the main
burner, ready to ignite it when required.
Instead of supporting the vessel on fixed brackets D, it may be placed on a grid N
as shewn in Fig. 2, this grid being pivotted on two brackets O and resting on or
attached to the valve stem C so that the valve spring, when it closes the valve, raises
the grid N off the bearers P.
When the grid is loaded by the weight of a vessel placed on it it is depressed until
it rests on the bearers P, pushing down the stem C and so opening the valve. A
similar arrangement may be applied to the heater shewn in Fig. 1, a lever N being
hinged to D so that, when a small vessel is placed over the flame, the stem C will be
depressed by its weight acting on the lever N.
Having now particularly described and ascertained the nature of my invention
and in what manner the same is to be performed, I declare that what I claim is :-
The construction and use of gas heater, substantially as described and illustrated
by the accompanying drawings.
Dated this 18th day of February 1889.
ABEL & IMRAY,
Agents for the Applicant.