U.S. patent number 3,765,397 [Application Number 05/338,811] was granted by the patent office on 1973-10-16 for portable charcoal stove.
Invention is credited to Raymond Eugene Henderson.
United States Patent |
3,765,397 |
Henderson |
October 16, 1973 |
PORTABLE CHARCOAL STOVE
Abstract
A portable and nestable hibachi type stove having two housings
defining a first chamber and a larger second chamber, respectively,
each of the housings having a tapered wall configuration extending
between a larger open end and a smaller open end. A grate, a rack
and one or more draft openings are provided in each housing, with
the smaller ends of each housing being of like size and
configuration for mating with one another. Either housing can serve
as an upper firebox chamber or a lower preignition chamber to allow
selection of different size cooking surfaces, and the entire stove
structure is demountable and nestable for ease of storage and
transportation.
Inventors: |
Henderson; Raymond Eugene
(Waban, MA) |
Family
ID: |
23326268 |
Appl.
No.: |
05/338,811 |
Filed: |
March 7, 1973 |
Current U.S.
Class: |
126/25R; 126/25B;
D7/332; 126/9R |
Current CPC
Class: |
F24B
3/00 (20130101); A47J 37/0763 (20130101); Y02A
40/928 (20180101) |
Current International
Class: |
A47J
37/07 (20060101); A47j 037/07 () |
Field of
Search: |
;126/25R,25A,9R,25B,59.5
;110/1F ;99/448,339,340 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: O'Dea; William F.
Assistant Examiner: Joyce; Harold
Claims
What is claimed is:
1. A portable and nestable hibachi type stove comprising:
a first housing defining a first chamber and having a tapered wall
configuration extending between a larger open end and a smaller
open end generally parallel to said larger end;
at least one draft opening in the wall of said first housing near
the larger end thereof;
a second housing defining a second chamber smaller than said first
chamber and having a tapered wall configuration sized and shaped to
permit nesting of said second housing within said first housing
when said stove is not in use;
said tapered wall configuration of said second housing extending
between a larger open end and a smaller open end generally parallel
thereto;
the smaller open ends of said first and second housings being of
like configuration and having means for supporting said housing one
atop the other in either a first disposition with said first
housing supported by said second housing or in a second disposition
with said second housing supported by said first housing;
at least one draft opening in the wall of said second housing near
the larger end thereof;
a first grate supportable in said first housing in a position
generally parallel to the larger and smaller ends thereof and
intermediate said ends;
a first rack removably supportable at the larger end of said first
housing;
a second grate supportable in said second housing in a position
intermediate to the larger and smaller ends thereof and generally
parallel to said ends;
a second rack removably supportable at the larger end of said
second housing;
said first and second chambers each being operable as either a
preignition chamber or a firebox chamber depending upon the
operative arrangement of said chambers in said first or second
disposition.
2. A portable and nestable hibachi type stove according to claim 1
wherein said tapered wall configuration of said first and said
second housings are each of conical shape having similar
tapers.
3. A portable and nestable hibachi type stove according to claim 1
further comprising handles disposed substantially opposite each
other on said tapered wall of said first and said second housings
respectively.
4. A portable and nestable hibachi type stove according to claim 2
wherein said first and second grates are removable.
5. A portable and nestable hibachi type stove according to claim 1
further comprising a cover plate for the larger end of at least
said first housing.
6. A portable and nestable hibachi type stove according to claim 1
wherein said tapered wall configuration of said first and said
second housings are each of a pyramidal shaped having similar
tapers.
7. A portable and nestable hibachi type stove according to claim 1
wherein said means for supporting said housings one atop the other
comprises folded lip members on the smaller open ends of said first
and said second housings, said folded lip members being of similar
size and configuration for mating.
8. A portable and nestable hibachi type stove according to claim 7
wherein each of said folded lip members of said first and said
second housings has at least one draft opening disposed
therethrough.
9. A portable and nestable hibachi type stove according to claim 1
wherein each of said first and second housings includes at least
one draft opening in the wall of said housing near the smaller end
thereof.
Description
FIELD OF THE INVENTION
This invention relates to charcoal cooking stoves and more
particularly to a portable and nestable hibachi type stove having
separate firebox and preignition chambers.
BACKGROUND OF THE INVENTION
Portable charcoal or other solid fuel burning stoves have been
known for many years and are widely used for outdoor cooking. The
prior art has provided a variety of hibachi type stoves for outdoor
cooking, however, many of such stoves are cumbersome and require
petrochemical ignition agents for firing the charcoal. In
accordance with the present invention a hibachi type stove is
provided having the combined features of ease of assembly without
tools even under outdoor conditions, nestability for storage and
transportation in a compact package, ease of solid fuel ignition
without petrochemical ignition agents, and selectability of
different size cooking surfaces.
SUMMARY OF THE INVENTION
Briefly, the invention provides a hibachi type stove having
separate firebox and preignition chambers for the rapid ignition of
charcoal or other suitable solid fuel without need for elaborate
mechanical or petrochemical ignitors, and which is conveniently
demountable and nestable for ease of storage or transit, while
providing versatility in the choice of cooking surface areas. The
hibachi stove of the present invention is particularly well suited
for igniting and burning charcoal or other solid fuel in the
firebox chamber by using crumpled paper or other readily available
kindling materials as a preignition agent in the preignition
chamber. More particularly, the advantages and benefits of the
present invention are achieved by the operative dispositions of a
larger and a smaller chamber defined by two tapered wall housings,
and wherein the smaller ends of each housing are of like size and
configuration for mating with one another. Either the larger or
smaller chamber can serve as the upper firebox chamber or the lower
preignition chamber to allow a selection of different size cooking
surfaces.
DESCRIPTION OF THE DRAWINGS
For a more complete understanding of the present invention
reference should be had to the following detailed description taken
in conjunction with the drawings in which:
FIG. 1 is a cutaway pictorial view of a preferred embodiment of a
hibachi type stove according to the invention;
FIG. 2 is an elevation view of a further embodiment of a stove
according to the invention in one operative form;
FIG. 3 is an elevation view of the novel stove in a second
operative form;
FIG. 4 is an elevation view illustrating a pyramidal configuration
of the novel stove;
FIG. 5 is an elevation view of the novel stove illustrating
separate use of both housings; and
FIG. 6 is a partly cutaway elevation view of the invention in
nested form.
DETAILED DESCRIPTION OF THE INVENTION
While the present invention will be described, by way of example
and for convenience, with respect to a hibachi type stove having
conically shaped housings, it will be understood that the invention
has a wide range of applicability to other shapes and
configurations of the housings.
With reference now to FIG. 1, there is shown an operative
embodiment of the present invention, having an elongated stove 10
which is comprised of two conically shaped housings, an upper
housing 12 into which charcoal or other suitable solid fuel can be
placed and which functions as a firebox or heat generating chamber,
and a lower housing 14 that serves as a preignition chamber in
which a suitable preignition agent such as paper, cardboard, or
other kindling is placed for ignition of the charcoal or other
solid fuel contained in housing 12. The top housing 12 is defined
by an encircling tapered wall 16 which defines a chamber 17. The
inwardly and downwardly tapered wall of housing 12 terminates at a
folded lip 18 which is of a size and configuration for mating with
a like lip portion provided on housing 14. Alternative means for
mating housings 12 and 14 are contemplated. For example, truncated
ends of housings 12 and 14 can be dimensioned to support one
another, or various collar configurations can be employed for
supporting either housing atop the other. In the illustrated
embodiment, the upper or larger end of wall 16 terminates at a
folded lip 20 to add strength to housing 12 and for support of
mounting prongs 21 of a cooking rack 22. Located below and
substantially parallel to folded lip 20 are projections 24
extending inwardly in chamber 17 and operative to provide ridges 26
substantially parallel to lip 20 for support of a suitably sized
grate 28.
A plurality of draft openings 31 are arranged around folded lip 18
for supplying air to chamber 17 when top housing 12 is separated
from the lower housing 14 in the event independent operation of
housing 12 is desired, as is illustrated in FIG. 5. Handles 32 are
attached substantially opposite each other on wall 16 for removing
housing 12 from housing 14 after ignition of the solid fuel, or for
other handling purposes. Draft and ignition openings 30, four of
which are shown, are arranged equispaced around wall 16 at a
position lip 20 and ridges 26. These openings 30 serve as draft
holes for fuel on grate 48 when housing 12 is employed as a
preignition chamber unit, and also serve to ignite a preignition
material contained in chamber 17 when housing 12 is employed as a
preignition unit, as shown in FIG. 3.
The lower housing 14 is defined by an encircling tapered wall 36
which defines a chamber 15 and is constructed similarly to housing
12. The inwardly and upwardly tapered wall 36 terminates in a
folded lip 34 which is of a size and configuration for removably
supporting lip 18 of chamber 17. The larger end of encircling wall
36 terminates in a folded lip 38 for support of mounting prongs 39
of a cooking rack 40 or for support of housing 12, depending on the
use intended. Located above and substantially parallel to lip 38
are projections 42 directed inwardly around the circumference of
wall 36 to provide ridges 44 in chamber 15 substantially parallel
to lip 38 and which support grate 48 in a position generally
parallel to the larger and smaller ends of housing 14 when in the
disposition as shown in FIG. 3. Also located in wall 36 are draft
and ignition openings 50, four being shown, arranged equipspaced
around the wall at a position between ridges 44 and lip 38. These
openings function for either ignition of kindling or as draft holes
for the solid fuel, depending on the mode of use. Draft openings 51
are arranged equispaced around folded lip 34 for supplying air to
chamber 15 when the smaller housing 14 is separated from the larger
housing 12, when independent operation is desired as illustrated in
FIG. 5. Draft openings 51 and 31 may be closed during the initial
period of ignition of charcoal in chamber 17 by setting the
equispaced draft openings in a non-aligned position as shown in
FIG. 1. Handles 52 are attached substantially opposite each other
on wall 36 for removing housing 12 from housing 14 after ignition
and for other handling purposes.
A further embodiment of the novel stove of the present invention is
depicted in FIG. 2 wherein folded lip 20 terminates in a projection
23 around the circumference of wall 16 for support of a removably
disposed cooking rack 22. Located below and substantially parallel
to projection 23 are a plurality of flanges 27 for support of a
suitably sized grate 28. Similarly, in lower housing 14 folded lip
38 terminates in a projection 37 around the circumference of wall
36 for support of a removably disposed cooking rack 40. Located
below and substantially parallel to projection 37 are flanges 41
for support of a suitably sized grate 48 when in a disposition
similar to the depiction in FIG. 3. Supporting the hibachi stove 10
is a lid member 54 which is of sufficient size and configuration to
cover the larger opening of housing 12 and which can be used as a
cover when the unit is not in use or as a solid cooking grill as
shown in FIG. 4. An optional cover (not shown) similar to cover 54
can be provided which fits over the larger end of chamber 15 and
which may be used to keep the cooking racks clean or as a solid
cooking surface when chamber 15 is used as the cooking chamber.
The operative arrangement as depicted in FIGS. 1, 2 and 4
illustrates a disposition of the hibachi type stove wherein the
smaller chamber 15 operates as the preignition chamber and chamber
17 operates as the firebox and cooking chamber. In the disposition
illustrate by FIGS. 1, 2 and 4, a large size cooking surface is
provided with the charcoal or other suitable solid fuel contained
on grate 28 being ignited by crumpled paper, cardboard, small
kindling or other suitable preignition agent by the heat generated
thereby being focused and directed from the preignition chamber 15
for rapid and efficient ignition of the solid fuel contained on
grate 28 in the firebox chamber 17.
A further operative mode of the hibachi type stove of the present
invention is depicted in FIG. 3 wherein the smaller chamber 15 has
become the firebox chamber and the large chamber 17 has become the
preignition chamber. In FIG. 3, the charcoal or other suitable fuel
is placed on grate 48 while the preignition agent is placed on or
in chamber 17. After the charcoal or other solid fuel contained in
the firebox chamber is ignited by the preignition agent the firebox
unit may then be separated from the preignition unit by lifting the
cooking unit or firebox unit from the preignition unit with handles
52 in the event independent operation is desired as is illustrated
in FIG. 5.
A further embodiment of the stove is depicted in FIG. 4 wherein the
tapered wall configuration is of pyramidal form and wherein grate
28 is supported by a continuous ridge 56 around the circumference
of wall 16 and grate 48 is supported by a continuous ridge 58
around the circumference of wall 36. Various means for supporting
the racks and grates in the stove are of course deemed to be within
the scope of the invention.
A further form of the novel stove is depicted in FIG. 5 wherein
housing 12 and 14 are demounted for independent operation providing
two usable cooking surfaces, and wherein the structure is otherwise
as in the previous figures.
Referring to FIG. 6, the demountable and nestable feature of the
present invention is illustrated with the housings 12 and 14 in
nested arrangement such as for storage or transportation. In
nesting the stove as shown in FIG. 5, the housings 12 and 14 are
separated, with grate 48 and rack 40 remaining in the smaller
housing 14. The housing 14 is then nested within the chamber 17 of
housing 12 after removal of grate 28 and rack 22. Handles 52 of the
smaller housing 14 may be positioned as shown against tapered wall
16 when the chambers are nested to aid in ease of removal of
housing 14 from housing 12. Grate 28 is placed within the larger
open end of housing 12 and rack 22 is then placed thereover to
complete the nested assembly. Nested together in this manner, the
novel hibachi of the present invention is easily transportable and
storable.
While the present invention has been described in accordance with
illustrative embodiments, it is recognized that modifications in
the size, configuration and arrangement of particular
implementations will occur to one skilled in the art, and it is
thus intended that the appended claims cover all such
improvements.
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