Year: 1897

page_text: fate of Application, 27th Apr., 1597-Accepted, 29th May, 1897
I, ANTON SACHS, of 40 Wilhelmstrasse, Diez a/L, in the Empire of Germany,
Road Inspector, 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 that class of portable cooking stoves in use in military
or other camps where the chief considerations are those of easy transit and
compactness.
This invention consists in providing a spirit lamp of special construction with a
cooking vessel within an external composite casing and its object is to secure an
easily portable and compact cooking stove which can be rapidly put into action is
economical in use, and when in transit does not permit leakage of the oil or spirit
from the lamp.
The mode of carrying this invention into effect is illustrated in the accompanying
drawings in which-
Figure 1 is a sectional elevation of the improved cooking stove and
Figure 2 a sectional plan on the lines y Figure 1.
The outer composite casing which contains the lamp and cooking vessel is
preferably oval in shape as shown in plan on Figure 2 and consists of two vertical
uprights bb', fixed upon a bottom piece m the sides being formed of two curved
metal plates u, u, which are hinged on the upright & and when closed snap or spring
underneath the plate catches n n formed on the upright b; while the whole casing
is completely closed in at the top by the cover when in transit or when it is
desired to extinguish the lamp; this cover having a small compartment /³ with
lid h formed in it for carrying cooking utensils etc. as required.
2 2
The heating lamp consists of an annular casing al¹ surrounding a central well a in
the bottom of which the spirit burns, the top portion forming a combustion chamber
and being fed with air by way of the cones a' which project above the level of the
burning spirit as shown in Figure 1; the cones taking their air supply in turn
through slots s formed in the external casing. The outer annulus a' acts as a spirit
reservoir to the inner well a and is in constant communication with it by means of
the perforations a³ while the upper and combustion portion of the well a is
perforated all round at a² so that should the lamp be tilted when the cooking
stove is in transit the spirit from a runs through the perforations as back into the
annulus a' ready again for use. The cooking vessel d'is provided with guides
which slide upon the uprights b 6', and hold it in position while the bottom of the
vessel rests upon a perforated or slotted ring c immediately over the combustion
chamber a, the vessel itself being fitted with a tight cover e fastened in any
suitable manner. When in operation the lamp is lighted and the top cover f
removed then the cooking vessel it is placed in position on the ring c, and the
pivotted sides u u closed, so that flame and hot air circulate round the vessel and
cook the material enclosed rapidly and economically until it is desired to extinguish
the lamp which is done instantly by placing the cover fin position and thus
stopping the up draught from the combustion chamber and therefore the supply of
air to the flame. A suitable carrying handle such as i shown in dotted lines on
Figure 1 may be provided and it may be arranged to fold down within the outer
casing when not in use.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is ;-
1. In portable cooking apparatus the provision of a spirit lamp with an outer
annulus, an inner oil well and combustion space, and connecting perforations between
the outer annulus and inner well and combustion space; substantially as and for the
purpose hereinbefore described.
2. The portable cooking stove hereinbefore described with reference to the
accompanying drawings.
April 1897.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agente.