DOUBLE-WALLED COVER FOR COOKING FOOD

COUVERCLE A DOUBLE PAROI, POUR LA CUISSON DES ALIMENTS

English Abstract

ABSTRACT OF THE DISCLOSURE
A cover for cooking food located over a heat source
has an outer dome-shaped wall and an inner dome-shaped wall
within the outer wall and spaced therefrom by spacers secured
to each wall. The inner and outer walls are imperforate and
have lower edges which are substantially horizontally aligned,
thereby forming a space between the inner and outer walls
which is open only at the lower edges. In use, hot air from
the heat source and from within the inner wall can pass into
the space between the walls at the lower edges and be retained
in the space.

Claims

The embodiments of the invention in which an exclusive
property or privilege is claimed are defined as follows:
1. A cover for cooking food located over a heat source,
said cover having an outer dome-shaped wall and an inner dome-
shaped wall within the outer wall and spaced therefrom by spacers
secured to each wall, the inner and outer walls being imperforate
and having lower edges which are substantially horizontally
aligned, thereby forming a space between the inner and outer
walls which is open only at the lower edges such that, in use,
hot air from the heat source and from within the inner wall can
pass into the space between the walls at the lower edges and be
retained in said space.
2. A cover according to claim 1, wherein each wall
comprises a metallic layer covered by an outer layer of insulating
material.
3. A cover according to claim 2, wherein each wall also
has an outer metallic layer covering the layer of insulating
material to form a sandwich construction.
4. A cover according to claim 1, claim 2 or claim 3, also
including a container with a lid, the lid being located within
and being secured to an upper part of the inner wall.

Description

This invention relates to apparatus for cooking food,
and more particularly to a double walled cover~
It is an object of this invention to provide a movable
double-walled cover which can readily be placed over a burner
or heat element.
Another object of the lnvention is to provide a
double-walled cover for cooking whether it is placed withln a
vessel or upon a grill placed on a metallic plate positioned
directly over a burner or other heat source.
According to the invention/ a cover has an outer dome-
shaped wall and an inner dome-shaped wall within the outer wall
and spaced therefrom by spacers secured to each wall, the inner
and outer walls being imperforate and having lower edges which
are substantially horizontally aligned, thereby forming a space
between the inner and outer walls which is open only at the lower
edges such that, in use, hot air from the heat source and from
within the inner wall can pass into the space between the walls
at the lower edges and be retained in said space.
Each wall may comprise a metallic layer covered by an
outer layer of insulating material. Each wall may also have
an outer metallic layer covering the layer of insulating material
to form a sandwich construction.
The cover may also include a container with a lid, the
lid being located within and being secured to an upper part of
the inner wall.
Embodiments of the invention will now be described,
by way of example, with reference to the accompanying drawings,
of which:-
Figure 1 is a side view, partly in section, of a
cover according to one embodiment,
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Figure 2 is a sectional vlew along the line 2-2 of
Figure 1,
Figure 3 is a sectional side view of a cover according
to another embodiment in which the inner wall
of the cover is secured to the lid of a
~ettle, with each wall having an insulating
layer, and
- Figure 4 is a view similar to that of Figure 3, with
the kettle lid removed, and wherein each wall
consists of a sandwich with a metallic double
layer having an intermediate insulating layer~
With reference to Figures 1 and 2, a cover 11 has an
outer dome-shaped wall 12 and an inner dome-shaped wall 13
separated by spacers 14 secured to the walls 12, 13 to define an
outer chamber 15 and an inner chamber 16 open at their lower
edges. The ~alls 12, 13 are imperforate, that is to say have
no openings other than the openings at their lower edges, which
are hori~ontally aliynedO The cover 11 pxevents hot air from
escaping from the vicinity of a burner 17, which can directly
heat a vessel containing food or heat a metallic plate 18 placed
over the grating 1~ of burner 17, which can be that of a domestic -
~stove or the like having a grill 20 placed upon said metallic
~ plate 18 for braising meat. Because the hot air tends to rise,
the air escaping from the inner chamber 16 ~round its lower edge
21 as well as the hot air coming from heated metal plate 18 is
admitted through opening 22 into the inside of chamber 15 formed
between the two walls 12 and 13 of cover 11. When the outer
- chamber 15 is full of hot air, the escape of hot air from inner
chamber 16 away from cover 11 is more efficiently impeded, 50
that the food placed inside the cover can cook more easily and
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rapidly, with consumption of only a small amount of fuel which
is considerably less than that required for cooking the food
without cover 11.
In addition, because of the thermally insulating action
of the cover, the user can approach the place where the foods are
being cooked without the discomfort of undesirable high tempera-
tures.
For manipulation of th~ cover, a knob 23 is provided
so the user can put on or take off the cover at will.
Walls 12 and 13 may be made simply of metal sheet as
illustrated in Figure 1, or alternatively they may include a layer
24 of thermal insulat.ion as illustrated in Figure 3, which pre-
ferably is applied to the outer side of the walls in order to
permit cleaning the inside of cover 11 easily.
Alternatively each of the walls of cover 11 may, as
illustrated in Figure 4, be composed of a sandwich of three layers,
two external metallic layers 25 and one intermediate insulating
layer 26.
These different possibilities for construction of the
walls of the cover are illustrated by way of example to indicate
that selection may be made of any one of these dispositions of
: layers. An importa~t feature of this double cover is that the
space between walls 12 and 13 is open at the bottom 22 of cover
- 11.
In Figures 3 and 4, an embodiment of the cover 11 is
illustrated in which the walls 12, 13 are attached by means of
a screw 27 and an adapter 28 to lid 29 of kettle 30, in such a
manner that the lower edges 21 of the cover 11 are at the same
- level as the bottom wall 31 of kettle 30. Screw 27 may be the
; 30 sam~ one which secures knob 23 for manipulating the cover.
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In the foregoing embodiment, cover 11 is joined to
kettle lid 29 so that, when the user has occasion to inspect
the food contained inside chamber 16, heat without the cover
is not entirely lost, and furthermore the user does not need
to remove cover ll first and then lid l9 to the kettle 30, but
does it all in one move.
Other embodiments within the scope of the invention
will be readily apparent to a person skilled in the art, the
scope of the invention being defined in the appended claims.
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