Improvements in Gas Heating Apparatus.
Year: 1895

page_text: Date of Application, 14th Dec., 1895
Complete Specification Left, 14th Oct., 1896-Accepted, 14th Nov., 1896
Improvements in Gas Heating Apparatus.
I, GUILLAUME SCHOONJANS of 63 Rue de l'Hotel des Monnaies, Brussels in
the Kingdom of Belgium, Metallurgical Chemist, do hereby declare the nature of
this invention to be as follows:-
This gas burner is designed for purposes where an intense heat is required such
as melting gold or silver, rapidly heating water and the like.
A special feature of the burner is that the air supplied to the flame is heated,
whereby greater heat and more perfect combustion are obtained.
The burner is of the well known atmospheric kind, the gas being delivered under
pressure through a jet to an air bulb or to the mouth of a horizontal tube the
further end of which turns up at a right angle and terminates in a round cap with
horizontal holes for the flame a little below its summit.
A short distance below the flame is fixed a horizontal disc furnished with
perforations to allow the required amount of air to ascend to the flame.
Around the edges of this disc is a vertical wall and at the top of this an
annular ring somewhat overhanging the interior space in which the flame burns.
A cup shaped guard or mantle formed of some refractory or non-conducting
material extends from the junction of the disc with the centre tube to the top of
the vertical wall and in this cup are horizontal radial apertures for admitting the
air coming from the disc.
This air supply is thus warmed by the heat radiated laterally from the burner,
the main body of heat passing directly upwards.
The shape of the mantle may be varied another suitable form being a truncated
cone, but in all cases a space is formed between the mantle and burner head which
space may be left open or filled with balls of refractory material and another space
for air is formed either within or behind the mantle so that the air supply is
thoroughly heated soon after the burner is lit.
Dated this 14th day of December 1895.
S. S. BROMHEAD,
97 Newgate Street, E.C., Agent for Applicant.
COMPLETE SPECIFICATION.
Improvements in Gas Heating Apparatus.
I, GUILLAUME SCHOONJANS of 63, Rue de l'Hotel des Monnaies, Brussels, in
the Kingdom of Belgium Metallurgical Chemist, 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 :-
The gas heating apparatus is especially intended for assays and for the smelting
of gold and silver and the like, and produces by a gas pressure of 20 millimetres
and an average gas consumption of 500 litres per hour, a heat in the furnace above
it about 1100°, Centigrade.

page_text: The apparatus may also be used for other heating purposes, or for the boiling of
water and other substances in laboratories or in houses.
I will now describe my invention with reference to the accompanying drawings
in which
Fig. 1 shows a sectional elevation of my gas heating apparatus intended more
especially for general use.
Fig. 2. shows a plan view of disc Q.
Fig. 3 shows a modified form of my gas heating apparatus, and
Fig. 4 shows a plan view of Fig. 3.
In both forms of the apparatus the gas enters through the mouth H or H¹ and
draws in air by A or A' respectively in the Bunsen tube G or G' and flows into
the-burner head D D¹ where it is ignited and burns in the orifices L L'.
In both forms of the apparatus the pipes G G₁ are provided with recesses or
seats P, P¹, of preferably circular form for the outflow; Q Q' is a cylindrical disc
which has a row of round holes B B¹ and through these holes the fresh air supply
enters from below, passes upwards and through a number of radial openings or
channels M M¹, which are arranged in the mantle F F" formed of some non-
conducting fire-proof, or other suitable material around the burner head D, D¹.
The arrangement of this mantle is in both the constructional forms, slightly
different, and the mantle has for object to retain the heat radiating to the sides and
downwards, so that the maximum effect of the heat acts only upon the upper
horizontal surface, and through the radiating of heat to the sides the air supply
becomes heated. This mantle is hereinafter called the " recuperator."
In Fig. 1 the recuperator is formed of a semi-globular shape and is encircled by
a cylindrical heat mantle of a greater diameter, so that one part of the air which
flows in through the openings B, upwards, and passes up through the recuperator,
and then radiates from outwards to inwards and into the flame, whereby the latter
is slightly concentrated. The annular rims J J' serves
crucibles or other utensils.
as supports for the
In Fig. 3 the recuperator F¹ resembles a truncated cone and consists of two
parts, an exterior cone F1 and an interior insertion O. between which is a space N
in which is a stratum of still air so that the complete retention of the radiating
heat is obtained.
The burner head D¹ is a cylinder, but for drawing up the horizontal radiating
heat, balls Care placed in the intermediate space between D' and O so that the
air supply on its way upwards is bound to pass same before it can enter the flame.
The conical recuperator F is also encircled with a cylindrical mantle E¹.
JJ are supports for the furnace crucible.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is
--
1. A gas heating apparatus for smelting and other purposes by which the
generation of an intense heat is obtained which only radiates through the upper
surface, said apparatus consisting of the Bunsen tube G G¹ upon which is placed a
burner head D D' of fire proof material which is provided at its sides with
orifices L L', the latter being encircled by the recuperators F F¹ of semi-globular
or truncated conical shape consisting of some suitable non-conducting material,
leaving a free space on all sides except above, so that the air supply can only enter
the flame by the radial openings or channels M M' in the walls of F F', whereby
the air, before entering the channels M M becomes heated in the space formed
around the outer wall surface of the mantles or recuperators F F into which it
enters by openings B connected below with a disc Q, as herein described and set
forth.
2. In combination with the recuperators F F¹, as specified in Claim 1 the
formation of a cylindrical space N between O and F¹ containing a stratum of still
air, as herein described and set forth.

page_text: 3. In combination with the burner head D D¹ and recuperators F F³, as specified
in Claim the arrangement of the heat accumulating fire-proof balls C in the
intermediate space between 0 and D¹ for the purpose of increasing the surface of
the walls for heating the air supply to a maximum, as herein described and set
forth.
Dated this 14th dox of October 1806
S. S. BROMHEAD,
97, Newgate Street, London, Patent Agent.