Year: 1889

page_text: Date of Application, 16th Feb., 1889
Specification Accepted, 23rd Mar., 1889
I, WILLIAM BLAKELY, of Dene House, Bournemouth in the County, of Hants,
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 has for its object to economize the heat of oil lamp cooking stoves,
particularly that chimneyless class known as the Wanzer.
My Invention consists in a non-conducting shield or casing which encloses the
space between the lamp flame and the cooking vessel and thus protects the flame from
wind or draughts so that the cooking operation may be performed in draughty places
and even in the open air.
The Invention is illustrated in the accompanying drawings and will be described
with reference thereto.
Figures 1 and 2 shew the invention applied to what is known as the "Universal'
cooker. In these figures a is the shield or casing constructed with double walls (as
hereafter described with reference to figures 3 and 4) and wholly enclosing the lamp,
as seen. This shield may either be made in one with the tripod stand or it may be
c is the cooking
separate therefrom or be supported by it in any suitable manner.
utensil. At the lower part of the shield there would be an air supply orifice or
orifices (which may be formed by serrations in the lower edge of the casing a) and
the top of the shield would be provided with holes a¹ extending through the double
skin to maintain proper combustion. The orifices can be closed, when necessary,
by a slide to regulate the supply of air, as will be readily understood. is a door, either
hinged to the shield or sliding up and down in grooves therein, through which the
lamp may be inserted and withdrawn. This door also serves to give passage to
plates, etc. which may be contained between the inner wall of the casing and the
lamp, this space thus serving as a hot plate chest or oven.
Figure 3 shews a vertical section of as much of an oil lamp cooking stove as is
required to illustrate another application of the invention, figure 4 being a plan of
the same.
c is the cooking vessel, e the lamps (one, two, or more, as required)
and a an inverted cover or tray constituting a shield having lined or bushod apertures in
•

page_text: the base in which the cones of the lamp burners fit closely. The shape of the
tray is oblong, oval, or circular, to correspond exactly with the bottom of the
cooking base of the cooking vessel c in which the upper rim of the inverted tray
closely fits, thus preventing loss of heat by radiation. This tray is made of either
single or double skins. In the latter case, I fill the space between the two sheets of
metal with thick paper, padding, felt, woollen cloth, hair, or any other bad conductor
of heat. These skins are provided with sight holes f, passing through both skins,
covered with tale to enable the flame to be seen so that the wicks may be adjusted
as found necessary,
without removing the tray. g are holes in the tray sufficient to
allow enough air to enter for ensuring perfect combustion.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, 1 declare that what I
claim is
In an oil lamp cooker, the combination, with the lamp or lamps and the cooking
vessel, of a shield or casing constructed as described and enclosing the flame of the
lamp or lamps, substantially as, and for the purpose, specified.
D
1 ..