An Improved Atmospheric Gas Burning False Bottom for Kitcheners and Ranges.
Year: 1897

page_text: Date of Application, 31st Mar., 1897
Complete Specification Left, 21st May, 1897-Accepted, 26th June, 1897
An Improved Atmospheric Gas Burning False Bottom for
Kitcheners and Ranges.
1, ALIOE MARY BUSHELL, of "Homelands," Plashet Grove, East Ham, in
the County of Essex, Married Womau, do hereby declare the nature of this
invention to be as follows:-
11
This invention relates to an atmospheric gas burning false bottom for kitcheners
and ranges.
The invention consists of an iron falso bottom which is made of various sizes
aud to fit standard sizes of kitcheners and ranges. This false bottom has two or
more compartiments, each compartment having its own mixing chamber, according
to size of kitchener fire box. The gas and air are admitted into each separato
compartment by a tube connected to the gas supply and having an aporturo to
admit air in the ordinary way. On entering the mixing chamber of the false
bottom the gas and air expand and travel along the whole length of the mixing
chamber to the end where the mixed gas and air rises and travels back through
the upper part of the false bottom to the combustion nozzle or jets. By this
means the air and gas are intimately mixed and are raised in temperature before
being combusted, thus producing intense heat at the combustion point, and at the
same time preventing the lighting back to the burner.
One or more of the compartments may be used as desired and asbestos or like
material is placed over the combustion jets in the ordinary way, the products of
combustion passing as required, and regulated by dampera in the ordinary manner,
over the oven and under the hot plate, and around and through a tubular express
bath boiler and finally passing off through the flue pipe to the chimney.
An Improved Atmospherio Gas Burning False Bottom for
Kitcheners and Ranges.
I, ALICE MARY BUSHELL, of Homelands, Plashet Grove, East Ham, in the
County of Essex, Married Woman, 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 an atmospheric gas burning false bottom for kitcheners
and ranges so constructed as to offeot an intimate mixture of the gas and air before
combustion.

page_text: In the accompanying drawings
Fig. 1 is a plan of one form of my gas burning false bottom and fittings
complete,
Fig. 2 is a plan of the false bottom only with the cover plate removed; and
Figs. 3 and 4 are sections taken on the lines and y y of Fig. 1 respectively.
The same parts are lettered to correspond in all the figures.
The invention consists of an iron false bottom A which is made of various sizes
and to fit standard sizes of kitcheners and ranges. This false bottom has one or
more separate compartments formed by vertical partition walls a, each com-
partment having a plate a' which is secured to the front a 2 of the false bottom A,
and to the side vertical partition walls a, in an air and gas tight manner.
The
plates a' are connected to the front a 2 of the apparatus above the inlet B and
reach nearly to the rear wall a 3, being slightly inclined downwards from front to
rear as shown in Fig. 3. The space under each plate a therefore forms a mixing
chamber through which the gas and air admitted through B are compelled to pass
to the rear, escaping thence upwards in front of the rear wall a 3 and passing to
the upper side of the plate a' to the combustion nozzles or jets a 4..
The gas and air are admitted into each separate compartment by a tube B'
connected to the gas supply and divided into branched pipes beach fitted with a
tap band having an aperture 62 to admit air in the ordinary way.
On entering the mixing chamber the gas and air expand under the plate a¹ and
travel along the whole length of the compartment to the end where the mixed gas
and air ascend as before stated and travel back over the top of the plate a¹ issuing
through the nozzles or jets a 4. By this means the air and gas are intimately
mixed and are raised in temperature before being combusted, thus producing
intense heat at the combustion point, and at the same time preventing the lighting
"back to the burner.
The apparatus may be constructed with any suitable number of compartments
and any one or more of these may be used as required by providing each with a
gas inlet tap as shown. Asbestos or like refractory material may be piled up on
the top over the combustion nozzles or jets in the ordinary way, the products of
combustion passing as required, regulated by dampers in the ordinary maonor,
over the oven and under the hot plate of the kitchener or range, and around and
through a tubular bath boiler, and finally passing through the flue pipe to the
chimney.
Having now particularly described and ascertained the nature of my said inven-
tiou, and in what mannor the same is to be performed, I declare that what I
claim is ;-
An atmospheric gas burning false bottom for kitcheners and ranges having two
or more separate compartments each with a gas and air inlet pipe leading thereinto
and a plate extending from the frout above the iulet to near the rear so as to form
a mixing chamber, and combustion nozzles or jets in the top, all arranged to
operate substantially as and for the purpose hereinbefore described and illustrated
se accompanying drawings.
in
Dated this 21st day of May 1897,
F. W. GOLBY,
36 Chancery Lane, London, W.C., Patent Agent for the Applicant.