Improvements in Outdoor Cooking Apparatus.
Year: 1890

page_text: Date of Application, 3rd Apr., 1890
Complete Specification Left, 3rd Feb., 1891-Accepted, 7th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements in Outdoor Cooking Apparatus.
I, WILFRED CAMPBELL LATHAM, of 6, Montague Terrace, Friar's Stile Road,
Richmond, in the County of Surrey, Gentleman, do hereby declare the nature of
this invention to be as follows :-
The object of the present invention is to provide a portable apparatus which may
be depended upon for simple cooking operations out of doors, in spite of the rains
and winds of inclement weather.
The apparatus constructed according to my invention consists of a metal casing,
either rectangular or cylindrical, within which are arranged sockets for the
reception of the lamp, which may be, and preferably is, an ordinary spirit lamp of
suitable heating capacity. The top of the casing is pierced above the lamp to
receive the kettle or cooking pot, which, when in position, is supported by a flange
thereon resting upon the casing top around the hole. The ventilation of the flame
of the lamp to support combustion, is effected by a series of small holes arranged
around the casing near the bottom, and protected on the inside by a shield, to
prevent too great a draught. In addition, the casing is provided with ventilators
with adjustable screens and shutters fitted thereto, so that the admission of air can
be easily regulated according to the strength and direction of the wind.
By preference, the cooking utensils provided with the apparatus are a kettle and
a saucepan, the body of the former being slightly smaller than the latter, although
the flanges upon their upper part for supporting them in position may be the same
size; thus, when the apparatus is not in use, the kettle may be placed within the
saucepan, while the latter rests in position above the lamp. Both the utensils and
the casing are provided with swinging handles, and the saucepan with a folding
cover, which can be taken off, doubled up, and stowed away inside the casing when
not required.
A door is arranged in the side of the casing, which may be opened to attend to
the lamp.
In cooking apparatus thus arranged, the lamp is perfectly protected from the
weather, and all the heat therefrom is accumulated within the casing, and made to
act upon the cooking pot, which being supported by a lip or flange fixed near the
upper edge, has all its surface except the cover alone, contained within the casing.
Should it be found desirable to have an outlet for some of the excessive vapors
from the lamp, a few small holes near the top of the casing will form a sufficient
escape, without creating a backward draught. The adjustability of the ventilators
permits the admission of just sufficient air to support the flame of the lamp, while
the screens or baffles prevent the extinction thereof by the wind.
Dated this 3rd day of April 1890.
NEWTON & SON,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Outdoor Cooking Apparatus.
I, WILFRED CAMPBELL LATHAM, of 6, Montague Terrace, Friar's Stile Road,
Richmond, in the County of Surrey, Gentleman, 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 object of the present invention is to provide a portable apparatus which may
be depended upon for simple cooking operations out of doors, no matter how rough
the wind and weather.

page_text: In the accompanying drawings, I have
according to my invention.
mustritted
Fig. 1 is a sectional elevation of the stove in use.
apparatus constructeu
Fig. 2 is a sectional elevation, shewing all the parts packed together for
carrying.
Fig. 3 is a sectional plan on the line x x of Fig. 1, with the kettle, saucepan, and
saucepan lid removed.
A is the open topped casing of sheet metal, cylindrical, as shewn in the drawings,
but it may equally well be in the form of a rectangular box.
B is a saucepan flanged so as to rest on the top rim of the casing. C is a kettle,
also flanged, and capable of fitting into the saucepan, as illustrated, when not in
b is the saucepan lid, made just small enough to go inside the casing, when
the apparatus is not in operation.
use.
D is a lamp, which may be an ordinary spirit lamp, as illustrated.
The casing A is provided with a double bottom a a¹, a being a plate situated a
little above the bottom proper a', which plate a is provided with a central opening
for receiving the body of the lamp. The space between the plate a and bottom a
is freely open to the atmosphere through perforations and openings in the
casing..
The plate a is perforated with a series of holes (see Fig. 3) for ventilating the
interior of the stove. E is a plate placed in a close contact with the plate a, and
capable of moving thereon. The plate E is also provided with holes to correspond
with the holes of the plate a, and is so arranged that the perforations of the latter
may be either opened, or partially or completely closed, by moving the plate E
with reference to the plate a, by means of the projection e extending outside the
casing, the open and completely closed positions being shewn by the drawn and
dotted positions in the plan view Fig. 3.
d is a shield or deflector for preventing the air entering the casing through the
bottom, from impinging directly upon the flame of the lamp, and thereby causing it
to burn irregularly. In the drawings, the shield is illustrated as being attached to
the lamp body, but it is evident that it may be carried by the casing, or otherwise,
if found more convenient. The lamp body is of a size to completely fill the central
opening in the plate a, so that air is only admitted through the holes in the latter,
as explained.
For additional ventilation from the side of the casing, ventilators F are provided.
These may consist of openings in the side or sides, which may be closed by
shutters sliding in guides inside the casing, and operated by buttons f¹ in a simple
manner. are shields for protecting the lamp from direct draught; these may be
mounted on, and moved with the shutters, or may be stationary.
In the top rim of the stove, around the opening in which the cooking utensil
fits, a number of small holes are provided, for the escape of the fumes from the
lamp.
The stove is provided with a handle, as also is the kettle, or other cooking
utensil, for lifting and carrying.
It will thus be seen that the stove is entirely independent of the condition of the
weather, and is capable, under all circumstances, of concentrating all the heat pro-
duced by the lamp upon the cooking utensil, the whole body of which, except the
cover, is embraced within the outside casing of the stove. The bottom of the
utensil is also very near the flame, and the latter is not subject to the disturbing
influence of wind and weather, owing to the complete protection afforded by the
ventilated casing.
The false bottom a, besides facilitating the admission of air in regulated
quantities, enables the lamp reservoir to be placed out of reach of the heat, which
may become very intense within the stove casing. A door or inspection hole closed
with semi-transparent material, may be provided in the side of the stove for
examining the lamp, without removing the cooking utensil.
1
In the drawings, the lamp is dropped into place from above, but in some cases it

page_text: may be inserted from below, and secured by clips, if the form and style of the lamp
render it more convenient to do so.
The whole apparatus is capable of being packed together, as shewn in Fig. 2, in
a very limited space, and is in all respects self contained.
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 portable cooking stove consisting of a ventilated metal casing containing a
heating lamp situated beneath a vessel which is supported upon a rim near the top
of the casing, all arranged substantially as described with reference to the drawings,
and constituting an apparatus suitable for simple cooking operations out of doors in
all conditions of weather.
2. The construction and arrangement of portable cooking stove and vessels,
substantially as described and illustrated in the accompanying drawings.
Dated this 3rd day of February 1891.
NEWTON & SON,
Agents for the Applicant.