Improvements in Spirit Lamps, and in their use in combination with Portable Stoves for Cooking and the like.
Year: 1897

page_text: Date of Application, 18th Aug., 1897-Accepted, 9th Oct.,
1897
Improvements in Spirit Lamps, and in their use in combination with
Portable Stoves for Cooking and the like.
I, WILLIAM BIRCH, of No. 13 Holland Place, Highfields, in the City of Sheffield,
Caretaker, 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:―
My invention has for its main object to provide a Combined, preferably portable
stove carrying or containing within itself efficient means for generating the heat
necessary for Cooking or heating purposes independently of either gas supply or
ordinary fuel.
To attain this object I provide a wickless spirit lamp constructed as hereinafter
described and fit it in a Combustion chamber preferably under a oven, said chamber
or the lamp being so constructed as together admit only a limited amount of air
delivered in such manner as to mix chiefly with the upper layers of the flame pro-
duced by the Consumption of any suitable spirit the vapour whereof is emitted
through a gauze covered opening having a sliding shutter or cover fitted thereto
for the purpose of regulating the area of said opening and also for closing same
entirely when desired; The other end of the Combustion Chamber leads to a series
of flues formed around and over the said oven. Across the interior of the lamp I
fix a piece of sheet metal for the purpose of retaining the usual sponge or fibrous
material in position up to the gauze and front of the lamp, a number of openings
are left in the lower edge of the dividing piece to permit the liquid spirit to pass
from the posterior division and thereby facilitate its formation into vapour while
rising through the sponge to the gauze grating.
In the Drawing hereto annexed is illustrated a portable stove fitted with spirit
lamp according to my invention. Figure 1, being a Sectional Elevation of the
same. Figure 2, is a top view of the Lamp, and Figure 3, is a front view of the
sheet metal plate dividing lamp reservoir internally.
My improved lamp A, may be made out of sheet metal with reservoir for the spirit
preferably of oblong form with a gauze covered opening B, in one edge whereon
to ignite the spirituous vapour as it issues therefrom. C, is the metal partition
or diaphram which separates the sponge or fibrous Material D, from the bulk of
the liquid spirit, the liquid being Conveyed to D, through the openings E, formed
in the lower edge of C, a sliding shutter or Cover F, is fitted in front while suitable
air spaces with deflectors G are formed around lamp or may be fixed inside of
the Combustion Chamber H, which forms under part of the stove whereby the
heat from the lamp is conducted under the oven I, to flues J, formed around and
over said oven so that products of Combustion finally escape into the atmosphere
by an outlet as K, said qutlet may also be utilised for supporting a vessel or pan
for heating liquids or the like. To prevent a too rapid or early escape of heat
from the flues and to assist in its useful diffusion I prefer to form the flues in a
sort of zig zag form or with intercepting and deflecting partitions as L.

page_text: 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:
1. The formation of a wickless lamp for burning spirit in a partially closed
Combustion Chamber such lamp reservoir having an internal division plate also
external air spaces around it whereby air is warmed and conducted or deflected to
the upper surface of a spirit flame issuing from a gauze covered opening having a
sliding regulator cover, all substantially as herein described and illustrated.
2. In a portable stove the combination of an oven having around it zig zag flues
a Combustion Chamber under oven in which is fitted a wickless spirit lamp air
divisions and deflectors, all substantially as herein described and illustrated.
Dated this 17th day of August 1897.
ISAAC BECK, F.S.P.A.,
Haymarket Chambers, 17 Haymarket Sheffield,
Agent for the Applicant.
ISAAC BECK, F.S.P.A.,
Haymarket Chambers, 17 Haymarket Sheffield,
Agent for the Applicant.