An Improved Form of Portable Gas Fire Stove.
Year: 1891

page_text: Date of Application, 18th Nov., 1891
Complete Specification Left. 19th Sept., 1892-Accepted, 18th Nov., 1892
PROVISIONAL SPECIFICATION.
An Improved Form of Portable Gas Fire Stove.
GEORGE MAURICE BELL 10 St. Andrew's Villas Lister Hills Bradford Gas
Cooking Oven Maker do hereby declare the nature of this invention to be as
follows:-
The outward form is a tin cylinder 7" diameter & 4" high, inside is a chamber
into which gas and air are conveyed by an iron pipe to which is attached an air
bulb. Combustion is effected at the top side of the chamber the gas and air in
united condition are forced out by pressure through a number of small holes, over
these holes is placed a wire grating covered with asbestos fibre 'thus forming an
incandescent fire covered by a cap of wire gauze.
The stove can stand on the floor or on the fireside hearth, on or under a table
the gas being conveyed to it by flexible tubing.
The stove can be made in various sizes and shapes.
COMPLETE SPECIFICATION.
An Improved Form of Portable Gas Fire Stove.
1, GEORGE MAURICE BELL, of 10, St. Andrew's Villas, Lister Hills, Bradford,
in the County of York, Gas Cooking Oven Maker, 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 an improved gas stove and its object is to provide a
cheap and simple stove in which the gas is intimately mixed with a proper
proportion of air and superheated before combustion.
Reference is to be had to the accompanying sheet of drawings forming a part
of this Specification in which sim.lar letters of reference indicate corresponding
parts in each of the figures.
Figure 1, is an elevation of my improved stove.
Figure 2, is a vertical diametrical section of the same.
Figure 3, is a plan view of Figure 1 and
Figure 4, is a plan view of the mixing chamber and burner shown separate with
a part of the top broken away to show the internal construction.
The lower part of the stove is formed of a sheet metal cylinder A and the upper
part B is made of wire gauze also of cylindrical form and arranged to fit inside A
and rest upon the internal flange C secured by the rivets D to A. A ring or
binding piece of sheet metal E is secured to the bottom of B and a similar ring F
is also secured at the top by the rivets G. A disc or top H rests upon the inner
heads of the rivets G and the ring F is continued up and bent over to form an
annular support J to hold a dish of water or the like.
The combined mixing chamber and burner K is supported on the disc L resting
upon the flange C. Said chamber is supplied with gas and air by the pipe M
fitted with an ordinary Bunsen or atmospheric burner attachment N. A number
of perforations O are made in the annular side P of the chamber K through which
the gas and air issue and they are lighted outside. The aggregate area of the
perforations is considerably greater than the area of the gas and air supply
pipe so that the gas issues from the numerous perforations under comparatively
slight pressure thus besides affording every facility for perfect combustion the
flame inclines or impinges against the side and overhanging flange or rim R of

page_text: the chamber and heats the same. This heat is conducted generally to the walls
of the chamber and the gases inside are consequently heated and issue from the
apertures in a heated condition highly favourable to combustion.
A fringe S of asbestos fibre is preferably placed outside round the chamber K
over the perforations O. This fibre when heated becomes incandescent as usual
with gas fires.
To secure the fibre in position the chamber K is constructed as shown in the
drawing. The bottom and lower part of the side of the chamber is formed by
the dish T and the perforated annular piece U fits in said dish. The lower ends
of the fibres S are secured or wedged between the inside of T and the outside of U
whilst the upper ends of S are secured in a similar manner round :U: by the
annular piece W. The top of the chamber is formed by the disc V flanged over
the top of U.
The pipe M may be fed with gas by an india rubber tube or in any convenient
manner.
To light the burner the upper part B may be removed or an opening sufficiently
large to admit a lighted taper may be made in the gauze.
I find that in a stove constructed in the above described manner that, at any
rate for occasional use, the combustion is so perfect that it is unnecessary to connect
it to a flue to carry off the noxious products or gases.
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 burner for a gas stove consisting of a number of perforations formed
round a mixing chamber arranged in such a manner that the flame inclines or
impinges against the walls of said chamber and heats the same, substantially as
herein shown and described and illustrated in the accompanying drawing.
2. The particular construction of gas stove herein described and illustrated in
the accompanying drawings.
Dated this 16th day of September 1892.
DRACUP & NOWELL,
Bradford, Agents.