Year: 1898

page_text: I, JOSEPH TITCHETT, of The Mersey Bedstead Company Limited, Hadfield
Works, St. James Street, Warrington, in the County of Chester, Director, do hereby
declare the nature of this invention to be as follows;-
-
This invention relates to improvements in the arrangement and construction of
gas stoves for cooking purposes and is designed for the purpose of heating the
oven with least expenditure or loss of heat.
In carrying out the invention the stove is constructed with an interior chamber
or oven into which the products of combustion cannot enter and this chamber is
surrounded with a series of flues through which the heated, gases and products of
combustion are conducted or caused to pass in the special manner hereinafter
described.
A chamber is provided at the bottom or underneath the oven for the burner and
the flue passes from the bottom up the back of the stove to the top and across the
top of the oven from back to front and down again at both sides at the front
corners and up and down again in zig-zag fashion along both sides to the back
corners where they rise again to a discharge orifice through which the products of
combustion are carried away.
The flues or passages are formed by ribs cast on the external side of the inner
chamber or oven or on the inner side of the outer casing or ribs may be cast on
both to form the desired flues or passages. A horizontal rib closes the flues at the
bottom and the top plate closes them at top.
The exhaust may be fitted with a damper to close it or to regulate its capacity
according to the amount of gas being consumed to prevent too great a current of
cold air entering with the gas products.
A shelf or plate may be placed below the burner to heat or maintain the heat of
articles placed thereon.
Boiling, grilling and other burners are placed on or above the top plate. The
grilling burner is made of forked shape with one gas and air inlet and two arms
so that when swivelled it does not leave the gas supply pipe.
In the main burner a gauze strip is placed inside the pipe to cover the holes and
prevent lighting back.
The casing or lining is made of two plates or sheets with a space between filled
with shag wool asbestos fibre, or other non-conducting material, to prevent radia-
tion of heat.
Dated this 29th day of June 1900
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.

page_text: Improvements in Gas Stoves.
I, JOSEPH TITCHETT, of The Mersey Bedstead Company Limited, Hadfield
Works, St. James Street, Warrington, in the County of Lancaster, Director, 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 improvements in the arrangement and construction of
gas stoves for cooking purposes and is designed for the purpose of heating the
oven with the least expenditure or loss of heat.
The invention will be fully described with reference to the accompanying
drawings; --
Fig. 1 is a front sectional elevation of the stove.
Fig. 2 is a side sectional elevation.
Fig. 3 is a plan with the top plate removed showing the top of the oven,
Fig. 4 is a plan from below with the bottom plate removed showing the bottom
of the oven.
Fig. 5 is a plan of the grilling burner.
Fig. 6 is a sectional elevation on line - Fig. 5.
Fig. 7 is a transverse section on line y-y Fig. 5.
Fig. 8 Transverse section on line - Fig. 5.
Fig. 9 Plan of burner D partly in section.
The stove is constructed with an interior chamber or oven A into which no waste
or unconsumed gas can enter. The oven A is surrounded on all sides with a
number of passages or flues through which the heated gases or other products of
combustion are conducted or caused to circulate so as to pass in succession over
the bottom top and sides of the oven.
The oven can be made in one easting or in sections as required and can also
be made of sheet iron.
Beneath the bottom a of the oven A is constructed a combustion chamber B with
a bottom plate C provided with a slot c through which the gas jets or flame from
à burner D pass and impinge upon the bottom a of the oven near the front. The
combustion chamber extends to the back of the oven and at the sides is enclosed
by the two sides plates b.
At the back of the oven is a vertical flue or passage E extending the full width
and height of the oven and opening into a horizontal flue or passage F constructed
over the top of the oven A.
At both sides of the oven A are constructed a number of vertical flues or
passages GG GG and H H H H. The flues of passages G G1, G2 G³ are formed
by a number of vertical ribs g g¹g² g³ and h h h² h³.
These ribs are cast on the
1
inner side of the external casing K and fit into ribs or grooves a² a² a³ a cast upon
the external side of the walls of the oven A. a tight joint being formed by means
of asbestos or other non-combustible packing. The bottom of the vertical side
flues or passages is formed by a horizontal rib L.
The vertical ribs gghh have a passage beneath them and the vertical
ribs g gh have a passage above them to cause the heated gases to pass up and
down in zig-zag fashion in contact with the sides.

page_text: The passages and flues are enclosed by an outer casing K formed of two
plates with a space between them packed with a non-conducting packing '
such as slag wool or asbestos to prevent radiation of heat.
An outlet or exhaust aperture 1 is formed near the top of the back plate and is
fitted with a damper R to close it the damper being operated or controlled by a rod
or handler. By the damper K the capacity of the opening ' may be regulated
according to the amount of gas being consumed to prevent too great a current of
cold air entering with the gas-products. The teniperature of the oven may also be
regulated and a uniform heat maintained within the oven by means of the
aperture which is opened or closed by the damper p also operated by the
handle r.
The aperture is formed in the top of the oven A through which the heated
gases can be permitted to enter the oven to heat it or dry it or to allow the escape
of steam. This aperture is closed by a damper or shutter pl.
A lower chamber A' with shelves a² may be formed below the burner D to heat
or maintain the heat of articles placed therein.
s one at
Boiling, grilling or other burners D' may be placed above the top plate of the
stove with a suitable frame S. The frame S is mounted upon four legs
each corner a space being thus formed around the grilling or roasting space which
allows of easy access thereto at any side of the stove.
The grilling burner D is made with two longitudinal tubes with perforations d'
with a plate s fitted between them. The plate s' is provided with a number of
holes through which the flame can ascend and with spaces between the holes
against which when the burner (or plate) is moved the flame impinges and is
deflected downwards.
The burner may be moved backwards and forwards by the handle so that in
one position the flame is covered by the plates and deflected downwards for gril-
ling. Or the plate s may be moved instead of the burner.
In the burner D) is inserted in the first place a brass or copper plate tube or
lining & with perforations of varying size the larger perforations being made in the
plate nearer the feed end of the burner and such perforations gradually decreasing
in size down to the blocked end thus ensuring an even and uniform flame from the
burner.
In the burner D a gauze strip is also placed inside the pipe below the brass
or copper plate to cover the holes and prevent lighting back.
In operation the heated gases from the flame of the burner D pass through the
combustion chamber B along the underside of the oven A up the back fue E along
the horizontal flue F in contact with the top of the oven and down through the front
corner flues G H and up and down through the flues G1 G2 G3 and HH2H³ in
zig-zag fashion against the sides of the oven.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is;-
1. A gas stove comprising in its construction the oven A the combustion
chamber the bottom plate C provided with a slot c enclosing the combustion
chamber, the burner 1) the vertical flue E at the back of the oven the horizontal
flue F on top of the oven the side flues GG GG and HHHH the vertical
ribs gggg and hhhh enclosing the vertical side flues the outer casing K com-
prising the plates kk and the non-conducting packing K' substantially as
described.
2. A burner for gas stoves constructed of an annular chamber or tube such as D
provided with orifices and lined with a brass or copper lining d with perforations
of varying size opposite the outlet orifices and a gauze strip d³ to cover the holes
in the lining plate d and prevent lighting back substantially as described and
shown.

page_text: 3. A grilling burner constructed and arranged substantially as described and
shown.
4 A gas stove having the several parts constructed and arranged in combination
substantially as described and shown.
Dated this 23rd day of January 1899.
WM. P. THOMPSON & Co.,
Manchester, Liverpool & London, Patent Agents.