IMPROVEMENTS IN THE ARRANGEMENT AND CONSTRUCTION OF GAS COOKING STOVES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I WILLIAM HOLBROOK of 6 Lea Bridge Road Clapton in the County of
Middlesex Gas Engineer do hereby declare the nature of my invention for
IMPROVEMENTS IN THE ARRANGEMENT AND CONSTRUCTION OF GAS COOKING
STOVES" to be as follows :—
This Invention relates to improvements in the arrangement and construction of
gas.cooking stoves.made of cast iron-with-double-jacket-for-circulating-heat.also__
combined with coiled tube circulating boilers.
This improved gas stove is made of cast iron and constructed with inner jacket
for roaster and pastry oven and it can be made into one oven if required.
A circulating coil is fixed from back of stove and connected to a boiler on each
side.
The gas burner is mounted on swivel joint to pull out for lighting.
"
The flame of the burner strikes on to the pastry oven and passes to roasting oven
and the top of burner heats the coil and passes to same. The heat passes into the
inner jacket and out of bottom side and the waste heat can be used for warming
plates and dishes or other like purpose.
The stove is protected from burning the floor by being mounted on legs.
The top of the stove is fitted with atmospheric burners some being fixed on gas
rail for useful heating purposes.
The gas is supplied from the centre of stove to get equal pressure the boilers
being fitted with draw off taps and the dripping pan is arranged between the oven
and roaster and the stove is also fitted with metal fittings and furniture also with
wrought iron grating and shelves and other requisite appliances.

page_text: COMPLETE SPECIFICATION.
I, WILLIAM HOLBROOK of 6 Lea Bridge Road in the county of Middlesex Gas
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN THE
ARRANGEMENT AND CONSTRUCTION OF GAS COOKING STOVES and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention relates to improvements in the arrangement and construction of
gas cooking stoves made of cast iron with boilers attached and refers principally to
an arrangement of side jackets through which the heat passes after leaving the
oven on its way to escape into the air whereby the oven is thoroughly ventilated
and heat is retained for a time and made use of which would otherwise be wasted.
It also refers to an arrangement of circulating water pipes connected to the boilers
which pass through the chambers containing the burners these latter by this means
heat the boilers and ovens at the same time.
This improved gas stove is divided by a plate of cast iron into two parts; the
upper part is fitted with gratings etc. for roasting meat; the, lower part is the
pastry oven. These ovens can be used as one if required; the dividing plate being
constructed so that it can be easily removed.
Two chambers which contain the atmospheric burners for heating the ovens and
boilers are arranged one on each side of the lower or pastry oven and have an
opening at the top through which the heat passes into the upper or roasting oven.
The pastry oven derives its heat by radiation from its sides against which a row
of jets in each burner chamber impinges.
The outside casing of the stove is made of cast iron and in addition to this there
are supplementary plates one on each side of the oven placed at-n convenient
.distance from the outside casing and leaving a passage the upper part of which
communicates by suitable openings to the upper or roasting oven the lower part
having an opening into the air..
By this arrangement the heat passes from burner chambers into upper oven after
which it enters the side passages at the top and after circulating through them
passes away through bottom openings into the air and the oven is kept thoroughly
ventilated while the heat which would otherwise be wasted by passing direct into
air is used to form a hot jacket which avoids the necessity of any expensive
covering of nonconducting material.
The waste heat can be used for warming plates and dishes or such like purposes.
Boilers are fixed on brackets to the outside shell of stove.
.
Each boiler is arranged with a circulating water pipe which passes from any
convenient part of same and is carried in a coiled form through the burner
chamber, back to a suitable, part of the boiler; one row of gas jets is arranged to
play on this pipe. By this arrangement the necessity of additional burners for
heating the boilers is avoided.
The burners which are atmospheric are mounted on swivel joints so that they
can be withdrawn from the stove to be lighted.
The top of stove is fitted with atmospheric burners for useful heating purposes
some of them being on the gas rail itself.

page_text: The gas
is supplied by a pipe in a central position whereby an equal pressure of
gas is obtained on the two burners for heating ovens and boilers,
The stove is protected from burning the floor and is fitted in the usual manner
with gratings and shelves,
•
DESCRIPTION OF DRAWINGS.
Figure 1 represents a front elevation of a gas cooking stove with boilers on each
side Figs. 2 and 3 a side elevation and part back elevation respectively Fig. 4 a
plan of same. Fig. 5 is a sectional elevation shewing general arrangement of stove
and the application of my invention relating to the arrangement of hot jackets for
economising heat and ventilating oven and also my arrangement of water pipes
and burners for heating boilers. A is the roasting oven B is the pastry oven
separated from A by a plate in order that no flavour of food cooking in ▲ the
roasting oven can enter B the pastry oven but the division plate is made in such a
manner that it can be easily removed if a large roasting oven is required.
CC are the chambers containing the atmospheric burners D' D" each of which
is hung on a swivel joint E¹ E" respectively in order that they can be drawn out
for lighting FF" are circulating water pipes each connected at the two ends with
its respective boiler Q' G" and each passing in a coiled forin through the burner
chamber C C on its own side. Fig 2 represents this arrangement very clearly a
part of outside shell being shown broken away illustrating relative positions of
circulating water pipes F1 F" and burners D¹ D". These pipes can be attached to
the bottom or other part of the boiler if required. The burners D¹ D" are
arranged with two rows of jets each one of which strikes against circulating boiler
pipes the other against side of lower oven B which gives sufficient heat to both
boilers and ovens.
An opening is shewn in top of each combustion chamber Fig 5 C¹ C" through
which the heat passes into the oven A. The sides of the oven A are formed by
two plates of cast-iron-in-addition-to-the outside-shell-of-stove-the-former being_
placed at such a distance from the latter as to leave a passage on each side H¹ H
each of which communicates with the oven at the top and at the bottom with the
outside air through the openings 11 I¹¹ in the outside shell.
The dotted arrows indicate the course taken by heat from the burner chamber
through oven and jackets to the outside air.
The top of stove is arranged in the usual manner with burners for boiling and
grilling some of the fixtures being on the gas rail itself and forming a ready means
of cooking food in small quantities in an economical manner.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
1. The application of double sides between which the heated air passes after
leaving the oven on its way to the outside air in the manner and for the purposes
herein before described.
2. The application of circulating water tubes connected with the boilers which
pass through gas jets from burners in chambers the said jets being common both to
the ovens and boilers as for the purposes and in the manner herein before described.
Dated this Nineteenth day of June 1885