Year: 1887

page_text: Date of Application, 1st Apr., 1887.
Specification Accepted, 3rd June, 1887
I 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 my Patent No. 506118 claims certain improvements in the construction
of Gas Ovens.
The object of this patent is to make further improvements in a
Kitchener.
portable Gas
The first part of my invention is to form the sides and back of the oven each of a
cast iron or any metal frame and a cast iron or other metal plate (the latter preferably
in two halves) rabbitted together in the centre, each of the four corners of the
frame is solid cast to within one eighth of an inch from the surface which may
be used as rests for the cast iron or other metal plates which plates being about
one eighth of an inch in thickness are placed on to the said solid cast rests and
leave a cavity between the two surfaces of the frame and the plates, extra rests or
stops may be cast at each side of the centre of the frame and also against the plates
themselves.
To hold frame and plates and tie bar firmly together without the use of rivets or
screws I use a centre (pivotted) bolt right through both frame and plates and tie
bar, the outside of the bolt holds and secures the tie bar in its place, the position
and action of which has been fully described in my aforesaid patent No. 50611880.
The tie bar may be fixed either at the top or bottom that is on the top plate or the
base, this would be done by a pivot similar to that beforementioned and the loose end
must be fastened by an ordinary catch.
The tie bar instead of being fixed by the bolt as before described might be a loose
bar and be made to drop through slotted ears or projections so as to fix the whole side
together in this case I prefer three slotted ears or projections through which the tie
bar would drop; in this latter case the end of the bar must be fixed and this may be
done by a wedge a screw, a pin or key.
The sides can also be secured in their places by ordinary flat bolts which would slide
into the top plate or base.

page_text: The sides can also be secured by having small conical projections or pins or studs.
cast on to the top and the bottom against the front end and back end and side itself
which projections or pins or studs would fit into corresponding sockets cast on to the
underneath part of the top and on or against the base.
The sides may also have a slotted ear; projection or socket cast against the upper
and lower end. Similar slotted ears projections or sockets are cast in corresponding
places against the base and against and underneath the top plate, short pins bars
bolts or wedges passing through both slotted ears, projections or sockets at top and
base will hold the said sides top and bases firmly together.
Now the object of the second part of my invention is to fix the Hotplate to the
top of the Gas oven without the use of a screw rivet or other ordinary fastening and
to do this I provide or cast on the top plate of the oven four or more slots or hollow
shaped openings into which openings I slide in opposite directions four or more cast
brackets and into these brackets solid keys fit which keys are cast on to the under side
of the Hotplate at places, corresponding to the slots or hollow shaped openings cast
on the top plate of the ovens the heads of which brackets are provided with similar
slots or hollow shaped openings; the brackets support and carry the Hotplate and
prevent it from moving in any direction.
Slots may have been used in gas ovens but not as applied by me for carrying the
Hotptate.
Now the object of the third part of my invention is to provide Metal Heat-radiating
or Grilling or Toasting plates cast or wrought with open narrow slots or holes
resting immediately, under the Hotplate grating and above the gas burner from which
the heat is deflected on to the article to be grilled, broiled or toasted under the burner,
resting and moving on two bars which bars may be flat, round, half round or angle
fixed to the under side of the Hotplate and allowing sufficient play for pushing the
plate from one side of the Hotplate to the other so that when the plate is pushed over
the burner the heat is deflected for grilling &c. and when pushed on one side, the
burner is left open for boiling or the heat-radiating plates may be easily removed from
the Hotplate altogether.
In my construction of the foregoing I disclaim any arrangement which may be con-
strued as reversible, pivotted folding or revolving burners or heat-radiating plates or
the attachment or fixing of plates to the burner.
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 repre-
sented different views and parts of my improvements in the construction of gas ovens.
Fig. 1. is a side elevation of the hollow frame and inside plates A. A. held and
secured in their places by means of a centre (pivotted) bolt with nut F. running
through the bars C. C.
Fig. 2. is a side elevation showing the tie bar E. and catches G. G.
Fig. 3. is the vertical section of the hollow frame B and showing the cavity.
Fig. 4. is a plan view showing catch G. to secure tie bar E. D. D. represent the
ledges or supports cast on the interior sides for trays or slides to rest upon.
Fig. 10. is a side elevation of the frame showing the loose bar A secured top and
bottom by slotted ears or projections B.
Fig. 11. part of tlie same side elevation showing flat holts A top and bottom sliding
into openings B.
Fig. 12. another part of side elevation showing pins, or other projection A cast or
fixed against the upper and lower end fitting into openings or sockets B of the top
plate and the base.
Fig. 13, another part of side elevation with a "conical projection A cast or fixed

page_text: Is the Hotplate frame.
E. E. are the bars supporting the plates A. .
The following are some of the advantages resulting from my invention.
1st Part. The facility of construction and of taking to pieces for the purpose of
cleaning and repairing. The inside plates being held in their places by means of the
bolt nut and tie bar as described will not requiro fixing with any screws or other
fastenings.
2nd Part. The Hotplate for Kitcheners as at present in use is fixed in its place
with screws or bolts and therefore is difficult to remove and replace-my improve-
ments enable the user to remove and replace the Hotplate without any tool or screw
and
For carriage and shipping purposes these advantages are increased by lessening the
risk of breakage and considerably reducing space occupied for package and therefore
diminishing the expense.
3rd Part. The Radiating plates will enable the user to grill and boil at the same
time or to do either separately with great economy and insure great cleanliness-at
the same time this renders the apparatus more complete and compact by dispensing
with loose accessories which are often liable to be mislaid; the simplicity of arrange-
iment prevents any part getting wrong or unworkable; the plates are easily removed
cleaned and placed back again.
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
First. The mode of fixing and securing of the inside cast or wrought metal plates
Fig. 1. A. A.
(1) by means of bolt F. and tie bar E. to a hollow cast or wrought metal frame
Fig. 1. B.
(2) to secure the sides and back to the top and base of the oven by the use of a
tie bar pivotted either at the top plate or the base with the loose end to be
fastened by a catch.
(3) to secure the sides and back to the top and base of the oven the tie bar
instead of being fixed by a bolt is made to drop through slotted ears or pro-
jections cast on or against the top plate and the base and the ends of the bar
to be secured in their places by a wedge, a screw, a pin or a key Fig. 10. A
and B.
(4) to secure the sides to their places by ordinary flat bolts to slide into a slot of
the top plate and into a slot of the base. Fig. 11: A and B..
(5) to secure the sides by means of small conical or straight projections or pins
or studs cast against the front end of the sides or at the back end or the side
itself to be held in their places by corresponding sockets cast on to the
underneath part of the top and on or against the base. Fig. 12 and 13.
A and B.

page_text: Second. The application of slots or hollow openings Fig. 5. A and B on the top
plate of ovens for the purpose of sliding and securing brackets D to carry the Hotplate.
Fig. 6.
Third. The application of cast or wrought metal plates Fig. 9. A carried by and
supported on two bars E. E. fixed underneath and against the Hotplate D.D.
The whole substantially in the manner as hereinbefore described.