AN IMPROVEMENT IN GAS HEATERS
Year: 1885

page_text: I, ISIDORE SPIELMANN of 3 Westbourne Crescent, Hyde Park in the county of
Middlesex, Engineer, do hereby declare the nature of my invention for "AN
IMPROVEMENT IN GAS HEATERS," to be as follows:---
My invention relates to the construction and arrangement of gas-heater in such
a manner that the heating flame becomes automatically extinguished when the
object heated is removed and only burns when the object is placed above the
burner, For this purpose, I support the stem which carries the burner by a
counterweight or spring slightly overbalancing it, and arrange in the passage to
the burner a slide or valve in such a manner that when an object is placed above
the burner on supports projecting froin it, its weight makes the burner descend
and thus the valve or slide port is opened and gas is admitted to the burner.
When on the other hand, the object is taken off, the counterweight or spring
causes the burner to ascend and so to close the gas passage thus extinguishing the
heating flame. The burner employed may be of any known kind such as any of
the various forms of the Bunsen or atmospheric burner, with or without a wire
gauze distributor. In many cases it is convenient to make the burner self lighting.
For this purpose I provide a small jet, the supply of gas to which is effected
through a by-pass so that it is not cut off when that to the main flame is cut off.
This jet tube may be made to move with the main burner and have its supply
controlled by a valve or slide arrangement so that the small jet is extinguished
when the main flame is lighted, and is itself lighted when the main flame is
extinguished.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.

page_text: I, ISIDORE SPIELMANN, of 3 Westbourne Crescent, Hyde Park in the County of
Middlesex, Engineer do hereby declare the nature of my invention for "AN
IMPROVEMENT IN GAS-HEATERS" and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement :-
My invention relates to the construction and arrangement of gas-heater in such
a manner that the heating flame becomes automatically extinguished when the
object heated is removed and only burns when the object is placed above the
burner. For this purpose I support the stem which carries the burner by a
counterweight or spring slightly overbalancing it, and arrange in the passage to
the burner a valve or slide in such a manner that when an object is placed above
the burner on supports projecting from it, its weight makes the burner descend
and thus the valve or slide port is opened and gas is admitted to the burner.
When on the other hand the object is taken off, the counterweight or spring causes
the burner to ascend and so to close the gas passage thus extinguishing the heating
flame. The burner employed may be of any known kind such as any of the
various forms of the Bunsen or atmospheric burner, with or without a wire gauze
distributor. In many cases it is convenient to make the burner self-lighting. For
this purpose I provide a small jet, the supply of gas to which is effected through a
by-pass so that it is not cut off when that to the main flame is cut off. This jet.
tube may be made to move with the main burner and have its supply controlled
by a valve or slide arrangement so that the small jet is extinguished when the
main flame is lighted, and is itself lighted when the main flame is extinguished.
Fig. 1 of the accompanying drawings is a vertical section and Fig. 2 is a plan of
one form of
gas heater according to my invention, suited for use on the table. The
gas supply pipe G leads into a cavity in the base B from which cavity a small
tube T ascends supporting at the top an open frame F and a kindling burner K.
The frame F is covered with wire gauze or perforated metal and has several studs S
projecting up from it. On the tube T is fixed a collar C faced with leather or
other suitable packing material, and against this collar presses a spring E of
sufficient strength to support the tube T and the top frame F. In this condition
gas passes into the tube T by its lower mouth as indicated by the arrows, and
supports a small flame at K, but there is no other issue for gas from the cavity
of B as the collar C acts as a valve closing the thin annular passage-around the
tube T. When a cooking vessel or dish is placed upon the studs S, its weight,
overcoming the force of the spring E, presses down the tube T and its collar C,
and now gas issues by the thin annular passage surrounding T and ascends the
interior of the pillar P becoming mixed with air that enters by the lateral
apertures A. The mixture of gas and air as it issues through the porous cover
of F is ignited by the flame K, and its flame serves for heating the vessel or dish
resting on the studs S. A packing washer W being placed in the bottom of the
base cavity, serves to close the mouth of the tube T when it is pressed down, and
thus causes extinction of the kindling flame at K when the main flame is burning,
-

page_text: On removing the load from the studs S the tube T is again raised by the spring
closing the valve C and opening the mouth of T. The kindling flame K thus
becomes lighted again and the main flame is extinguished.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The construction and arrangement of gas heater, substantially as and for the
purpose herein set forth.
Dated this 17th day of March 1885.
ABEL & IMRAY,
Agents for the Applicant,
28, Southampton Buildings,
London, W.C.