Improvements in Field Cooking Ranges.
Year: 1895

page_text: Date of Application, 26th Jan., 1895
Complete Specification Left, 26th Oct., 1895-Accepted, 30th Nov., 1895.
Improvements in Field Cooking Ranges.
We, THOMAS WHITE & Co., LIMITED, Camp Furnishers, of Union Street,
Aldershot, in the County of Hants, and WILLIAM TROTTER ROBERTSON,
Merchant, of The Grange, Aldershot, aforesaid, do hereby declare the nature of
this invention to be as follows:-
"
This invention relates to field cooking ranges, and has for object to obtain a
range combining solidity with lightness of construction and in which the heat of
the gases of combustion is very efficiently employed for heating the ovens and the
top of the range..
In carrying out our invention we provide a sheet-metal casing containing two
ovens so arranged that spaces forming flues are left around the same and that a
space is also left between the ovens for the fire-box or furnace, the said space being
divided so that the fire-box occupies the front part whilst the other part, behind
the fire-box and which is preferably tapered, is also divided to form flues, one in
connection with each oven. With this arrangement the gases of combustion from
the furnace pass over the ovens, then down beside and beneath the same and
thence to the vertical flues behind the furnace from which they pass to the
chimney.
In order to control the heat we arrange behind the fire-box in connection with
each vertical flue a grating controlled by a damper, by more or less opening which
a portion of the products of combustion may be allowed to pass directly into the
chimney without passing around the ovens, the said dampers being operated by
rods from the side.
In practice we prefer to form the gratings for the dampers in the plate which
forms the back of the furnace, other plates forming cheeks being arranged at the
sides of the furnace. The fire bars are made with the lower part removable for
cleaning purposes.
The hot plate forming the top of the range is divided into four parts, two of
which practically cover the ovens whilst the other two, which are at the centre
between the other plates, cover the fire-box and dampers and are readily
removable for permitting the cleaning of the same and the removal of the parts of
the furnace.
The rear plate of these two central plates is provided with a flange upon which
the chimney is carried and with eyes for fixing the same. Portions of the casing
adjacent to the flues are made removable for permitting the flues to be readily
cleaned.
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page_text: Improvements in Field Cooking Ranges.
We, THOMAS WHITE & Co., LIMITED, Camp Furnishers, of Union Street,
Aldershot, in the County of Hants, and WILLIAM TROTTER ROBERTSON,
Merchant, of The Grange, Aldershot, aforesaid, 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 field cooking ranges, and has for object to obtain a
range combining solidity with lightness of construction and in which the heat of
the gases of combustion is very efficiently employed for heating the ovens and the
top of the range.
In carrying out our invention we provide a sheet metal casing containing two.
ovens so arranged that spaces forming flues are left around the same and that a
space is also left between the ovens for the fire-box or furnace, the said space
being divided so that the fire-box occupies the front part whilst the other part,
bebind the fire-box is divided to form flues, one in connection with each oven. 'With
this arrangement the gases of combustion from the furnace pass over the ovens the
down beside and beneath the same and thence to the vertical flues behind the
furnace from which they pass to the chimney.
To enable our invention to be fully understood we will describe the same by
reference to the accompanying drawings, in which :-
Figure 1 is a perspective view of our improved cooking range packed ready for
transport:
Figure 2 is a vertical transverse section through the fire-box of the same :
Figure 3 a longitudinal vertical section :
Figure 4 is a plan of the range with the hot plate removed.
a is the sheet metal casing forming the back, front, sides and bottom of the
range the said casing being fixed to an angle iron frame b, b.
c, c are the two ovens in the said casing arranged so that a space is left between
them which space is divided by a partition d, reaching from the top of the casing
nearly to the bottom of the same. The space at the back of the said partition d
is divided by a transverse partition e which passes from the top to the bottom of
the casing, into two vertical flues f, f¹ the sides f of which are made to taper
upwards as shewn.
The sides of the fire box åre formed preferably of vertical cast iron plates g, g
passing from the front of the casing a to the partition d, and reaching nearly to
the top of the ovens c, e as shewn clearly in Figure 3. On the inner side of each
plate 9, 9 is arranged an angle iron frame bent as shewn clearly in Figure 2, the
said trames h, h being riveted or bolted to the front of the casing and resting on
the bottom of the same immediately in front of the flues. The back of the ash box
is formed by the plate i and that of the fire box by the plate ; which latter is held
in grooves in the side plates g, g in an inclined position as shewn. This plate jis
formed at the top with a grating k communicating with the flues f, f1 through the
opening . The grating k can be closed by dampers m, m which slide in a slot n
formed in the grating and are operated by means of the rods o, o passing through
the sides of the casing a.
The fire bars are formed in two parts, namely front vertical bars p, p the top
cross piece pl of which is pivoted to the front portions of the angle iron frames h, h
and bottom horizontal bars 9, 9 resting on the lower cross piece p² of the front
bars and on the angle iron frames h, h. With this construction it will be obvious
that the bottom bars q, q can be removed for cleaning or other purposes and that
the front bars p, p can then be moved on their pivots.
The hot plate forming the top of the range is of cast iron and made in four

page_text: pieces r, r, s, t. Of these r and are two end pieces practically covering the
ovens c, c and s and t are two central pieces covering the fire box. The piece t is.
provided with a flange u adapted to receive the chimney and with eyes v, wor
the like for fixing the same in position. x, x, x are three covers of the kind
usually provided with cooking ranges. x, x¹ are the oven doors and a³ is the fire
box door all of ordinary construction.
In practice the chimney is so constructed that it can be detached from the-
flange u taken to pieces and placed in one of the ovens as shewn in Figure 1.
The range is mounted on wheels y, y in the usual manner and may be provided at
the sides with handles z, z, with doors z¹, z¹ and with loose bottom (movable in
rabbets) to facilitate the removal of soot.
When the range is in operation the gases of combustion from the fire box pass,
as shewn by the arrows in Figure 3, over the top of each oven down the outer side
of the same then underneath and finally escape into the two compartments f, fl of
the vertical flue. By this means it will be obvious that the heat of the gases of
combustion is very efficiently utilized for heating the ovens and the top of the
range.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. An improved field cooking range having a casing in which are arranged two
ovens with a space between them the front part of which is occupied by the fire
box and the rear part by a vertical flue open at the bottom substantially as
described.
2. In a field cooking range of the kind described in Claim 1 tapering the flue at the
back of the fire box and dividing it by a transverse vertical partition extending from
the top of the flue to the bottom of the casing and providing an opening from the
fire box into the said flue the said opening being controlled by dampers-
substantially as, and for the purposes, hereinbefore described.
3. In a field cooking range of the kind described in Claim 1 constructing the
fire bars in two parts, vertical and horizontal, the horizontal part being adapted
to be removed from the fire box and the vertical portion to swing on pivots,-
substantially as, and for the purpose, herein before described.
4. The improved cooking range hereinbefore described and illustrated in the
accompanying drawings.
Doind il acil
T
1000
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.