Improvements in or relating to Cooking Apparatus.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Cooking Apparatus.
I, HUBERT HIGGINS, of 4, Trinity Street, Cambridge, in the County of Cambridge,
Demonstrator of Anatomy to the University of Cambridge, do hereby declare the
nature of this invention to be as follows:-
The object of this invention is to provide apparatus which forms part of or
can be attached to an ordinary kitchen range so that steam may be safely and con-
veniently used for domestic cooking.
In carrying out this invention I employ any range with a suitable boiler to
generate steam. On the range I attach or construct a chamber, provided with
an air jacket, in such a manner that the jacket is heated directly by the fire, or
I may provide means for heating the air previously to circulating it through the
jacket. A suitable door is provided for the cooking chamber, which has two con-
nections to the boiler; one direct for the supply of saturated steam, the other
through a suitable superheater placed at the back of the fire.
In cases where the boiler is so constructed as to be liable to send over water
with the steam a suitable separator may be provided; and a reducing valve may
be fitted on the steam supply, to ensure that the steam in the chamber or super-
heater be not at a higher pressure than that of the atmosphere. The superheater
is preferably so constructed that the temperature of the steam is under control,
independently of the fierceness of the fire.
The chamber is provided with suitable fittings for the escape of the steam used
therein,
1
1 1000
I, HUBERT HIGGINS, of 4, Trinity Street, Cambridge, in the County of Cambridge
Demonstrator of Anatomy to the Cambridge University, 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:-
The object of this invention is to provide apparatus to form part of or which can
be attached to an ordinary kitchen range so that steam may be safely and con-
veniently used for domestic cookery.
The accompanying drawing shows diagrammatically apparatus constructed

page_text: according to this invention applied to a kitchen range, having a boiler A, fire
grate B and oven C of ordinary construction.
Connected preferably with the front of the boiler A is a pipe A', controlled by
a valve A³ which runs along the side of the boiler to, or nearly to, the back of the
grate, whence it is carried conveniently by means of the upright portion A3 to
outside the top of the grate at A' where it branches into two parts, one portion A³
leading directly into the cooking chamber D) at D', the other forming a coil of
any convenient shape, constituting the superheater E, which is likewise connected
with the cooking chamber at 12. The coil E is preferably placed against or
embedded in the fire brick back of the grate as shown in the figure, but it may be
placed in the bottom of the grate, or so formed as to take the place of the ordinary
solid bars either in the bottom or the front of the grate.
Both the pipe A³ and the coil E. are 'provided with a valve A6 E' respectively
placed preferably just before their entry into the chamber D. For convenience
of manipulation these valves may have. long stems or rods.A E leading to the
front of the range to carry their handles.
The chamber 9 is conveniently placed over the oven, and is furnished with a
jacket F, which may be connected with the flues in any convenient manner, so
as to be heated by the combustion gases. The chamber D is also provided with a
pipe D3 for the escape of the steam used in cooking and this is preferably led into
the chimney.
The cooking chamber D is provided with a door and suitable fittings.
When in operation the valve A' is used to regulate the supply of water to the
tube A³ where it is completely vapourised. If it is desired to use saturated steam
the valve A is opened and the steam passes directly into the chamber through the
pipe A5; when higher temperatures are desired A6 is closed and the valve E¹
opened, so that the steam travels through the superheater before entering the
cooking chamber.
a
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. The combination with the boiler and grate of a cooking range of steam such
as A' A3 A5, superheater E and jacketted chamber D substantially, as described.