IMPROVEMENTS IN OR ADDITIONS TO KITCHENERS AND OTHER COOKING RANGES
Year: 1876

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LETTERS PATENT to James Watts Brown, of Leamington, in the County of
Warwick, Commercial Traveller, for the Invention of IMPROVEMENTS IN
OR ADDITIONS TO KITCHENERS AND OTHER COOKING RANGES."
PROVISIONAL SPECIFICATION left by the said James Watts Brown at the
Office of the Commissioners of Patents on the 12th February 1876.
JAMES WATTS BROWN, of Leamington, in the County of Warwick, Commercial
Traveller. "IMPROVEMENTS IN OR ADDITIONS TO KITCHENERS AND OTHER COOKING
RANGES."
My Invention has for its object to effect the rapid removal of the vapours
and effluvia arising from the cooking vessels on the hot plates of kitcheners and
other close fire-cooking ranges, and thereby to efficiently ventilate the apartment
in which the kitchener or cooking range is set. For this purpose I construct and
combine with the kitchener or cooking range the following parts: At the back of
the register door, which is situated over the hot plate of the kitchener or range
is a ventilating tube of any required length, diameter, and sectional figure, the
lower bent end of the said tube opening immediately under the said register door
at the back thereof, and its upper bent end opening into the main chimney shaft ;
the inner or back plate of this tube forms part of the fire-flue of the kitchener or
range. That part of the said ventilating tube which abuts upon the frame in
which the register door is situate is of a funnel shape, the part nearest the said
register door being widest and gradually narrowing to the breadth of the main part
of the ventilating tube.
Upon the wide end of the ventilating tube the hinged register flap or door rests;
the bent and funnel-shaped bottom of the ventilating tube is made by preference
of cast iron, and is fixed in the front wall of the chimney of the kitchener, the
upper part of the said tube being made of wrought iron and connected to the
lower part by flanges.
The back of the ventilating tube described being heated by the fire flue, of which
it forms a part, the air in the said tube is heated and rarefied, and an upward
current thereby established in the said tube, and the vapours and effluvia from the
cooking vessels on the hot plate are thereby carried through the said ventilating

page_text: tube into the chimney shaft, and the kitchener or range thereby effectually venti-
lated, a fresh current of air passing into the chimney as in open fire-ranges.
By my Invention the thorough ventilation of the kitchener or range is effected
without interfering with the cooking qualities of the kitchener or range.
My Invention may be applied to all kinds of kitcheners or cooking ranges in
which hot plates are used for heating cooking vessels.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said James Watts Brown in the Great Seal Patent Office on the 14th
July 1876.
JAMES WATTS BROWN, of Leamington, in the County of Warwick, Commercial
Traveller. "IMPROVEMENTS IN OR ADDITIONS TO KITCHENERS AND OTHER COOKING
RANGES."
My Invention has for its object to effect the rapid removal of the vapours and
effluvia arising from the cooking vessels on the hot plates of kitcheners and
other close fire-cooking ranges, and thereby to efficiently ventilate the apartment
in which the kitchener or cooking range is fixed. For this purpose I construct and
combine with the kitchener or cooking range the following parts: At the back of
the register door, which is situated over the hot plate of the kitchener or range,
is a ventilating tube of any required length, diameter, and sectional figure, the
lower end of the said tube opening immediately under the said register door at
the back thereof, and its upper end opening into the main chimney shaft; the
base or bottom of the ventilating tube is furnished with vertical plates or gills
for increasing its heating surface. The inner or back plate of this tube forms part
of the fire flue of the kitchener or range. That part of the said ventilating tube
which abuts upon the frame in which the register door is situated is curved.
Upon the base of the ventilating tube the hinged register flap or door is supported;
the curved bottom of the ventilating tube is made by preference of cast iron, and
is fixed in the front wall of the chinney of the kitchener, the upper part of the
said tube being made of wrought iron, and connected to the lower part by a
socket.
The back of the ventilating tube described being heated by the fire flue, of which
it forms a part, the air in the said tube is heated and rarefied, and an upward
current thereby established in the said tube, and the vapours and effluvia from the
cooking vessels on the hot plate are thereby carried through the said ventilating
tube into the chimney shaft, and the kitchener or range thereby effectually venti-
lated, a fresh current of air passing into the chimney as in open fire ranges.
I will now proceed to describe with reference to the accompanying Drawing the
manner in which my Invention may be performed.
Figure 1 represents an end elevation of a ventilator for a kitchener or cooking
range constructed according to my Invention; Figure 2 is a front elevation of the
same; Figure 3 is a front elevation of the same without the register door and its
frame.
Figure 4 is a transverse vertical section of the ventilating tube, register door,
and its frame, and Figure 5 is a plan of the same without the flap or door and upper
part of the ventilating tube.
Figure 6 represents in front elevation, and Figure 7 in transverse vertical section
drawn to a smaller scale, a kitchener to which my Invention is applied; Figure 8
represents in front elevation, Figure 9 in plan, and Figure 10 in transverse.
vertical section of one end of the same, a modification of the ventilator in which
the lower end or base is extended on each side the ventilating tube, the said modi-
fication being suited for kitcheners of large size.
The same letters of reference indicate the same parts in the several Figures of
the Drawing.

page_text: a is the register door or flap, hinged to and supported by the frame or case b;
c, d, is the ventilating tube, the lower expanded end d of which opens immediately
under the said register door a at the back thereof. The upper end of the venti-
lating tube has the curved figure represented and in the said upper end are openings
or perforations which open into the main chimney shaft f (see Figure 7). The inner
or back plate of the ventilating tube c, d, forms part of the fire flue h of the
kitchener (see Figure 7). The lower expanded end d of the ventilating tube (which
is made in one piece with the frame b in which the register door a is situated) is
corrugated, and is furnished with internal and external gills or heating plates i, i,
for the purpose of increasing the heating surface of the ventilating tube and pro-
moting a draught through the said tube. The shape of the corrugated part of the base
of the ventilating tube and the gills or heating surfaces is best seen in Figures 1,
4 and 5. The base part of the ventilating tube is made by preference of cast iron,
and in one piece with the frame b, carrying the register door a and the part
marked c of the ventilating tube is made of wrought iron; a flange on the base
part forming a socket for receiving the lower end of the wrought-iron upper part c,
as will be understood by an examination of the sections.
C
By an examination of Figure 7 it will be seen that when the kitchener is in use
the ventilating tube c, d (the back of which forms a part of the fire flue h), is
heated by the fire flue h, and the air in the said tube is thereby heated and rarefied,
and an upward current established in the said tube, and the vapours and effluvia
from the cooking vessels on the hot plates of the kitchener are thereby carried
through the said ventilating tube into the chimney shaft f, and the kitchener or
range thereby effectually ventilated.
Although I prefer to combine the gills or heating plates i, i, with the lower
part d of the ventilating tube c, d, for increasing the heating surface of the same,
yet the said gills may be omitted.
By my Invention the thorough ventilation of the kitchener or range
without interfering with the action of the kitchener or range when in use.
effected
My Invention may be applied to all kinds of kitcheners or cooking ranges in
which hot plates are used for heating cooking vessels.
Having now described the nature of my Invention and the manner in which the
same is to be performed, I wish it to be understood that I do not limit myself to the
precise details herein described and illustrated, as the same may be varied without
departing from the nature of my Invention; but I claim as my Invention the
improvements in or additions to kitcheners and other cooking ranges, herein-before
described and illustrated in the accompanying Drawing, that is to say, the combi-
nation with the kitchener or cooking range of a ventilating tube situated in the
fire flue of the kitchener or range; the lower open end of the said tube opening
immediately under the register door, and the upper end into the main chimney
shaft, the said ventilating tube being constructed and applied substantially as and
for the purpose described and illustrated.
In witness whereof, I, the said James Watts Brown, have hereunto set my
hand and seal, this Fifth day of July, in the year of our Lord One thousand
sight hundred and coventyr air
Witness,
RICARD KENDALL,
22, Union Street,
Bath.
JAMES WATTS BROWN. (L.S.)