Year: 1894

page_text: Date of Application, 17th Oct., 1854
Complete Specification Left, 9th Aug., 1895-Accepted, 14th Sept., 1895
I WILLIAM HILL of 24 Silchester Road Notting Hill in the County of
Middlesex Tin Plate Worker do hereby declare the nature of this invention to be
as follows:-
The object of my invention is to provide for use a very cheap but extremely
convenient and efficient portable oven which shall be capable of properly performing
its function both when hung or placed in front of a fire or other source of heat
before a grate or other apparatus and also when hung or placed above a fire or
other source of heat on the top of a gas or oil or other stove or other heating
appliance.
To carry out this object I make a chamber of the desired shape and size and the
top and bottom and two sides thereof are of tin or other suitable material that is
a good nonconductor of beat as also is the front thereof wherein is made the door
of the oven which can be secured by a latch and a separate back is made for this
chamber of any convenient material which can when desired be secured in position
by being slid into grooves on the edges of the sides or of the top and bottom of the
chamber or in any other usual manner. A large aperture is made in the bottom
of this chamber corresponding with or like unto the ordinary aperture in an hot
plate or in the top of a stove and a plate of any suitable material can be provided
which can be placed inside the chamber over this aperture when desired to cover
and close the same.
Another chamber is made inside this chamber of a similar shape preferably and
the top and bottom and back thereof are of sheet iron or other suitable material
that is a good conductor of heat and the top and bottom and back of this inner
chamber are at the desired distance from and preferably parallel with the top and
bottom and separate back of the outer chamber and the top and bottom of the inner
chamber are secured to the sides and the front of the outer chamber while the back
of the inner chamber is secured to the sides of the outer chamber.
The inner chamber constitutes the oven within which may be fitted any suitable
trays or shelves or the like and to which may be fitted any ordinary regulator for
the heat and when the bottom of this oven is too hot a tray can be placed thereon
inverted on which the articles to be treated may be placed.
When the oven is to be used in front of the source of heat the separate back of
the outer chamber is removed and the aperture in the bottom thereof is closed by
the loose plate and then this outer chamber is hung or placed in any ordinary
manner in front of the source of heat so that the heat can play directly on the
conducting back of the inner chamber and entering the spaces between the top
and bottom of the inner chamber and the top and bottom of the outer chamber can
also play on the conducting top and bottom of the inner chamber from which
spaces the heat cannot escape as the aperture in the lower space is closed while
there are no apertures in the upper space.
.
When the oven is to be used above the source of heat the separate back of the
outer chamber is replaced and secured in position after the loose plate that closes
the aperture has been removed and then this outer chamber is hung or placed in
any ordinary manner above the source of beat so that the heat can enter through
the aperture in the bottom of the outer chamber and play directly ou the con-
ducting bottom of the inner chamber and passing up the space. between the back

page_text: of the inner chamber and the back of the outer chamber can enter the space
between the top of the inner chamber and the top of the outer chamber similarly
playing on the conducting back and top of the inner chamber and again the heat
cannot escape as there are no apertures in the upper space.
Any suitable hooks and feet and handles and other devices can be fitted to the
outer, chamber.
An Improved Portable Oven.,
WILLIAM HILL of 24ª Silchester Road Notting Hill in the County of
Middlesex Tin Plate Worker 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 my invention is to provide for use a very cheap but extremely
convenient and efficient portable oven which shall be equally capable of properly
performing its function both when hung or placed in front of a fire or other source
of heat before a grate or other apparatus and also when hung or placed above
a fire or other source of heat on the top of a gas or oil or other stove or other
heating appliance.
In order the more clearly to explain this my invention and in what manner the
same is to be performed I refer to the accompanying drawing wherein I have
shewn an extremely simple and very convenient form and style of construction
and arrangement of this my portable oven.
Figure 1 is a transverse vertical section of the oven as and when being properly
arranged therefor it is hung in front of a fire grate.
Figure 2 is a transverse vertical section of the oven as and when being properly
arranged therefor it is placed on the top of the hot plate of a stove.
Figure 3 is an horizontal section of the oven taken at a 6 in Figure 2.
To carry out this my aforesaid object I make in any usual and convenient
manner a chamber of any desired shape and size and the top A and the bottom B
and the two sides D thereof are formed of tin or other suitable material that is a
good nonconductor of heat as also is the front E thereof; in which.can be made or
as is perhaps preferable and as is shewn in the drawing which can constitute the
door of the oven hinged on one of the sides D thereof and, capable of being
secured in the closed position by a latch or otherwise. A separate back. F is made
for this chamber preferably likewise formed of tin or other suitable material that
is a good noüconductor of heat which back F can when desired be secured in
position by being slid into grooves in or on the edges of the sides D or of the
top A and the bottom B of the chamber or as is shewn in the drawing. by being
constructed to. clasp beads on the edges of the sides D and the top A of the
chamber or in and by any other usual and convenient manner and can also when
desired be removed from such position easily and quickly.. A large aperture H is
centrally or thereabouts made in the bottom B of this chamber corresponding with
or like unto the ordinary aperture in an hot plate or in the top of a stove aud
a plate K of any suitable material can be provided which can when desired be
placed inside the chamber over this aperture H to cover and close the same.
Another chamber is made also in any usual and convenient manner inside this
chamber herein before described preferably of a similar shape and the top L and
the bottom M and the back N thereof are formed of sheet iron or other suitable
material that is a good conductor of heat which top L.bottom M and, back N. are

page_text: severally at the desired distances from and preferably parallel with the top A
bottom B and separate back F herein before described and the top L and bottom. M
of this the inner chamber can be secured in any ordinary and appropriate manner
to the sides D and the top A and bottom B of the outer chamber or to the front E.
thereof when the door of the oven is made therein while the back N of this the
inner chamber can be secured also in any ordinary and appropriate manner to the
sides D of the outer chamber.
The inner chamber constitutes the oven within which may be fitted any suitable
trays or shelves or other customary appliances which may be capable of sliding on.
and of being supported by ledges Paud to which may likewise be fitted any
ordinary regulator for the heat and when the bottom of this oven is too hot a tray
can be placed thereon inverted on which the articles to be treated may be placed.
When this oven is to be used in front of the source of heat say for example in
front of a fire in an ordinary grate as is shewn in Figure 1 the separate back F is
removed and the aperture H is closed by the loose plate K and then the outer
chamber can be hung by the hooks R from and on the grate bars T or can be
otherwise placed in front of the same being supported from the floor or elsewhere
in any ordinary and convenient manner in such wise that the heat of the fire can
play directly on the conducting back N of the inner chamber and entering the
spaces between the top and bottom of the inner chamber and the top and bottom
of the outer chamber can also play on the conducting top L and the conducting
bottom M of the inner chamber and the heat cannot escape from these spaces as
the aperture H in the lower space is closed while there is no aperture in the upper
space. Therefore this oven will according to this arrangement be eminently
capable of performing its required function.
When this oven is to be used above the source of heat say for example on the
top of the hot plate of a stove as is shewn in Figure 2 the separate back Fis
replaced and secured in position after the loose plate K has been removed so that
the aperture H is uncovered and then the outer chamber can be placed on the hot
plate V or can be hung or otherwise placed above the same in any ordinary and
convenient manner in such wise that the aperture H coincides with or is directly
above the aperture W in the hot plate V and therefore the heat can pass through
the apertures W and H and can play directly on the conducting bottom M of the
inner chamber and passing up the space between the backs of the inner and outer
chambers can enter the space between the tops of the inner and outer chambers
and can therefore similarly play on the conducting back N and the conducting
top L of the inner chamber and again the heat cannot escape from these spaces as
the separate back F is in position while as aforesaid there is no aperture in the
upper space. Therefore this oven will according to this arrangement also be
eminently capable of performing its required function.
Any suitable handles or other carrying devices and hocks or other suspending
devices and feet or other supporting devices can obviously be fitted to the outer
chamber as may be desired in each particular case to enable this portable oven to
perform in a convenient manner all its required functions.
I have thus described and I have shewn in the accompanying drawing as is.
herein before stated an extremely simple and very convenient form and style of
construction and arrangement of this my portable oven but I would have it clearly
understood as indeed is very evident that I do in no wise limit myself thereto for
both the outer and the inner chambers may be made of any shapes and of any
proportionate sizes and may be connected together in any convenient manner and
may be fitted and provided in any customary manner with such ordinary and
suitable appliances and devices as may be desirable in each particular case.
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. In a
portable oven the combination with an outer chamber having a

page_text: non-conducting top A bottom B sides D and front E and provided with a separate
removable back F of an inner chamber having a conducting top L bottom M and
back N an aperture H being made in the bottom B and provided with a loose
plate K substantially as and for the purposes herein before described and
declared.
2. The portable oven substantially as hereinbefore described and shewn in the
accompanying drawing.
Dated this 17th day of July 1895.
"
HART & Co.,
168, late 186, Fleet Street, London, E.C., Agents.