An Improved Spirit-lamp Stove.
Year: 1891

page_text: Date of Application, 21st Nov., 1891-Accepted, 16th Jan., 1892
COMPLETE SPECIFICATION.
[Communicated from abroad by ERDMANN TESCHER, 9, Urbanstrasse, Berlin,
Germany, Merchant.]
An Improved Spirit-lamp Stove.
I, ALFRED HERBERT DAVIES, of The Textile Manufacturer Office, New
Bridge Street, Manchester, Lancashire, Civil Engineer, 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 particularly to the manner in which the spirit used for
heating purposes is consumed or burnt, and to the means of regulating the feed of
the spirit to the burner. In carrying my invention into effect, I first vapourise the
spirit by the heat of the flame surrounding the burner, and convey such vapour to
the said burner, which assists in nourishing the flame, and while the stove or boiler
is in use, a means is provided to ensure an easily regulated and perfectly safe feed
of the spirit to the burner without the necessity of opening the inlet of the boiler
or spirit reservoir.
In order that my invention shall be thoroughly understood, I will proceed to
more particularly describe the same, and refer to the drawings hereto annexed.
Fig. 1. is a vertical section of the general arrangement of my improved spirit
stove or boiler.
Fig. 2. is part plan of same and
Figs 3, 4, 5, 6, and 7,. serve to illustrate the working of details connected
therewith for the supply of the spirit. Fig. 3. being part plain elevation of the
burner B. Fig. 4, a section on line y. y. and Fig. 5, a section on line 2, 2. Figs. G
and 7 are similar sections.
The same letters of reference indicate corresponding parts in all the views.
A is a ring shaped bowl or reservoir for the spirit, provided with an opening
having a screw-plug (a) which also is arranged to act as a safety valve. Inside
the bowl formed by the hollow shell A, is a smaller vessel (b) which we will call
the burning bowl placed in such a manner as to leave a space between it and the
shell A as seen on reference to Fig. 1.
The burner B is fixed in the centre of the inner bowl (b) the lower portion
being extended through the hollow shell A and serves at the same time to keep the
inner bowl (6) in its position. The burner B is composed of a funnel (c)
widening towards the top like an inverted cone, the mouth or opening of which is
provided with a perforated top and partition or division plates (d) for the purpose
of preventing as far as practicable the flame striking backwards and coming into
contact with the spirit. The funnel (c) is screwed on to the hollow plug (f)
which regulates the supply of spirit.
The tap (g) and the socket (4) of the hollow plug (ƒ) are each provided with
openings or orifices (į), (k), and (l), (m), respectively and situated at an equal
elevation, besides which the tap or plug (9) is provided with another perforation
which extends to the inside of the funnel (c) as far as the orifice (n).
The openings (A), (m), regulate the supply of the spirit from the hollow shell A
with which it will be seen they communicate to the vertical boring (n), in the plug
or hollow tap (g), Figs. 1, 3, and 5. By means of the openings or orifices (i), (l),
the spirit is fed into the inner bowl (6) whilst the vertical opening (n), in the hollow
plug (9) admits it into the funnel (c).
The manipulation of the stove or boiler is as follows:-After the hollow shell A.
has been filled with spirit through the opening (u), the plug (/) is opened just
sufficient to allow the spirit to enter the bowl (6) through the openings (i), (),
the spirit thus collected on the bottom of the bowl (b) is lighted and causes the

page_text: burner to become heated. When the burner (B) is sufficiently heated the tap is
opened wider, the spirit now begins to flow through the top of the plug at (n),
and inside the burner funnel (e) when it vapourises instantly, and ascending pene-
trates through the perforations, o, o, of the division and top plates (d) until it
reaches the flame which at once consumes it, raising the heat to a high effective
degree, somewhat similar to a blast heat.
The burner being fed automatically from the hollow shell A, the flow of the
spirit can be regulated or stopped by simply turning the tap (g) thereby closing
the openings (l), (m).
It will thus be clearly seen that an apparatus constructed in this manner is not
only free from danger, but will be a great saving in the amount of spirit consumed,
for when the plug (f) is properly fixed, it will only allow sufficient spirit to pass
in as is requisite to create a strong flame, and leaving when turned off, in the
funnel (e) and the bowl (b) a residuum consisting of only a few drops.
Over heating of the spirit-holder A. is obviated owing to the shape of the
bowl (6) between which and the hollow shell A. there is a sufficiently wide
air-space.
Of course it will be understood that the hollow shell A. or the whole burner
may be made in other shapes with the main features of this invention embodied.
Nor is it requisite that the burner B and the bowl (b) should be fitted with a con-
nected joint arrangement for regulating the supply of spirit, but each could be
connected separately with the spirit-holder A.
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 :-
1st. The combination with a hollow spirit-holding vessel A. having feed inlet
and safety valve (a) of an inner bowl or spirit burning dish (b) for the purpose
as substantially herein described and illustrated by the accompanying drawings.
2nd. The combination with a spirit-stove of a hollow burner B with perforated
plates (d) secured to the socket or body (4) within the bowl (b) in the manner.and
for the purpose of vapourising the spirit substantially as herein described and
illustrated in the drawings.
3rd. The use in combination with a spirit-stove of an automatic feed of spirit
to the burning bowl (6) and to the vapourising chamber (c) consisting of a hollow
plug () with an open end (n) and having a tap (9), and socket or body (h) each
provided with openings (i), (k), and (1), (m), for the purpose of supplying spirit
from the vessel A to the said parts (1) and (c) in the manner and substantially.as
herein described and illustrated by the accompanying drawings.
4th. The employment in combination with a spirit stove of conveying spirit
from the spirit vessel A through the openings (k), (m), to the openings (i), (!),
for supplying the burning bowl (b) and to the opening (n), in the tap (), for
supplying the vapourising chamber (e), all substantially as described and herein set
forth and illustrated by the accompanying drawings.
Dated this 20th day of November 1891
his 20th day of November 1891
W. T. EMMOTT & Co., LTD.,
New Bridge Street, Manchester, Agents for the Applicant.