Year: 1886

page_text: Date of Application, 12th Apr., 1886.
Complete Left, 11th Jan., 1887.
Complete Accepted, 11th Feb., 1887.
I SIGISMUND LEONI of 66 St. Paul's Street, Packington Street in the County of
Middlesex Gas Engineer do hereby declare the nature of the said Invention to be
as follows:-
Whereas the body portions of gas ovens are at present constructed in castings con-
sisting of the back, two sides, cover and an open front, and in order to form a cavity
to prevent outside radiation the interior lining is made up of plates cast separately from
the external plates the whole being secured together by means of horizontal bolts as
required.
Now the object of my invention is to produce a portable oven and one easily put
together and taken to pieces as required without the necessity of employing skilled
labour, and which shall at the same time be a stronger and more durable form of oven
than those hitherto produced.
And my invention consists in forming the sides and back of such oven of three or
more hollow sectional parts so as to fit together in the required manner, thereby
forming the before mentioned cavity to prevent outside radiation, which cavity may be
packed with non conducting material or not as preferred. The two bottom sections of
the sides are cast in such a way as to form the usual base of the oven. Instead of a
front, each of the side sections will be provided with a suitable moulding so as to form
the front, on which the door is hung in the usual manner. The front is completed by
the fixing of a cast top and bottom cross piece to be keyed into the said sides above
and below the door as required. In order to hold or compact the different parts
together I use bolts let vertically through the top plate of the oven (which top plate
may be single or hollow) and pass down through the cavities of the said sectional
parts, thereby holding the said parts together as required by means of suitable screw
nuts at the two ends of the said bolts.
If preferred I can employ separate castings for the base and front in which case the
said front will be fixed to the hollow sectional parts.

page_text: COMPLETE SPECIFICATION.
Improvements in the Construction of Gas Ovens.
1 SIGISMUND LEONI of 66 St. Paul Street Packington Street in the County of
Middlesex Gas Engineer 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 :—
Whereas the body portions of gas ovens are at present constructed in castings
consisting of one back, two sides, one front, one top, and one door, the two sides being
held to the front and the back by means of several screws and the top fastened down
with screwed bolts and nuts, and in order to form a cavity to prevent outside radiation,
the interior lining is composed of six plates (more or less) cast separately from the
external plates, but fixed to these external plates by means of several screws, now the
objection to screws and bolts for this purpose is the fact that they rust and set tight
into their places, and that in removing them they are frequently broken and require
to be drilled out; again the screwing and unscrewing necessarily strips the thread and
the screwing together cannot be effected unless the holes are tapped again for a larger
sized screw.
Now the object of my invention is to produce a portable oven, and one easily put
together and taken to pieces as required without the necessity of employing skilled
labour, and which shall at the same time be a stronger and more durable form of
oven than those hitherto produced.
And my invention consists in forming the sides and back of such oven each con-
sisting of two or more hollow sectional parts so as to fit together in the required
manner, thereby forming the before mentioned cavity to prevent outside radiation,
which cavity may be packed with suitable non-conducting material or not as preferred.
The base and top of the oven are constructed in the usual manner, the sides of such
oven providing also the front of the same on which front the door is hung on riders
and closed by means of a catch as required.
In order to hold the two sections of each side together and to the base and top, I
use a tie-bar, by preference half round turning on a screw or pivot fitted to the lower
section of each side, the ends of the said har closing into two slotted projections from
the top and bottom at cach side of the oven and slotted in opposite directions, thereby
forming a catch which will prevent any part of the whole construction from moving or
giving way. I may if preferred use bolts let vertically through the top plate of the
ven (which top plate may be single or hollow) and made to pass through the cavities
of the said sectional parts, thereby holding the said parts together as required by
means of suitable screw nuts at the two ends of the said bolts.
The two sections forming the back of the oven slide into a groove upon the side
sections, and are held firmly in their places immediately the tie-bar above described is
shot into the catches on the top and base.
In order that my invention may be fully understood I will proceed to describe it
more particularly by, the aid of the accompanying drawings in which are represented
different views and parts of my improved oven.

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a front elevation of the oven but with the door removed.
Fig. 2 is a side elevation of the oven showing the tie-bars.
Fig. 3 is a plan view of the oven but having the top removed.
Figs. 4. 5. and 6 show one of the hollow sectional parts of the oven in elevation,
plan and vertical section.
In these several figures the same letters of reference indicate corresponding parts.
A is the top part and B the bottom part of the oven carrying the slotted lugs CC
and D, D, into which tie-bars E E engage or lock to hold the parts of the oven
together. F is the pivot or pin on which the tie-bar E moves in order to hold together
or release the different sections of the oven. G is the door and H (fig. 3) the pin to
pass through hinges on the door G and on the oven front at I, I.
It will be seen that the sectional portions of the oven are provided with overlapping
plates as shown for example at J J, thereby making close fitting joints.
On reference to figure 5 it will be seen that the sectional part there represented in
plan view has the two ends K K closed, thereby forming a kind of complete hollow
brick, the portion of the casing L and the lining M being always united by the
ends K. K.
Ledges or supports at N N are provided upon the interior of the sides of the oven
for trays or plates to rest upon as required.
The said hollow cast sections forming the sides and back are preferably cast (each
section) in one piece by means of suitable cores, but they may be cast in two pieces
separately and fixed together.
The following are some of the advantages resulting from my invention.
First The facility of taking the various sections from one place to another and
putting them together with ease and without skilled labour. Whilst it takes two men
or more to put together a cast iron kitchener as at present in use one ordinary labourer
can without trouble put together the one I herewith describe without any assistance
and in considerably less time.
And secondly in putting my kitchener together no screws or other loose fastenings
are required thus doing away with parts and fittings subject to great wear and tear;
and the various parts fit into one another and consist usually of nine sections or parts,
being four for the sides, two for the back, one base, one top, and one door.
Also for cleaning or cleansing purposes I have the facility and great advantage of
having preferably nine sections separately which will enable purchasers to have every
single part thoroughly treated by itself, after which the whole apparatus will be as
good as a new one, although it may have been badly and roughly used during a
number of years.
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,
The construction of a portable and easily fitted oven made up of hollow sectional
parts cast in one or more separate pieces so as to form the sides and back and to which
said sectional parts the top and bottom and door are fitted and held together by the
tic-bars E substantially in the manner as hereinbefore described.
W. SPENCE & SON,
Agents for the Applicant.