IMPROVEMENTS IN APPARATUS FOR COOKING AND LIGHTING RY GAR
Year: 1869

page_text: LETTERS PATENT to Sigismund Leoni, of 34, Saint Paul Street, New
North Road, in the County of Middlesex, Manufacturer, for the
Invention of "IMPROVEMENTS IN APPARATUS FOR COOKING AND LIGHTING
RY GAR"
Sealed the 29th April 1870, and dated the 3rd November 1869.
PROVISIONAL SPECIFICATION left by the said Sigismund Leoni at
the Office of the Commissioners of Patents, with his Petition, on
the 3rd November 1869.
I, SIGISMUND LEONI, of 34, Saint Paul Street, New North Road,
in the County of Middlesex, Manufacturer, do hereby declare the nature
of the said Invention for "IMPROVEMENTS IN APPARATUS FOR COOKING AND
LIGHTING BY GAS," to be as follows :-
My Invention with reference to cooking apparatus relates to kitchen
ranges, and consists in the construction of an open or unenclosed range
composed of a frame, by preference of gas piping and open gas rings
similar to those represented and described in the Specification of a
Patent granted to me, and bearing date 12th Oct. 1868, No. 3124.
Fitted to the said frame are a series of shelves to receive culinary

page_text: vessels and articles. The gas rings are supported as required by portions
of the said frame in such a manner as to admit of various kinds of food
being arranged over and under the gas rings so as to be cooked by the
heat radiating therefrom by the aid of heat reflectors and heat diffusers
arranged in modes similar to those described in the Specification above
referred to. The open or unenclosed frame of the range may be con-
structed otherwise than as composed entirely of gas piping, but in any
case an arrangement of gas pipes is required in order to convey gas from
the meter to the gas rings. The range is or may be supported on wheels
or castors to admit of its being readily moved from one part of a kitchen
to another.
And my Invention with reference to lighting apparatus consists in the
adaptation and application to gas burners of a chamber in the shape of
a cap or cover composed of adamas, steatite, soapstone, or other clay
material forming a bad conductor of heat, and thus capable of becoming
readily heated and retaining the heat in the said chamber through which
the gas passes and becomes heated just before it emerges from the outlet
aperture or apertures of the burner. By this means the illuminating
power of the gas is considerably increased and the consumption of gas
reduced.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Sigismund Leoni in the Great Seal Patent Office on
the 2nd May 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, SIGISMUND
LEONI, of 34, Saint Paul Street, New North Road, in the County of
Middlesex, Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Third day of November, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Sigismund Leoni, Her special licence
that I, the said Sigismund Leoni, my executors, administrators, and
assigns, or such others as I, the said Sigismund Leoni, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thercafter during the term

page_text: therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
APPARATUS FOR COOKING AND LIGHTING BY GAS," upon the condition (amongst
others) that I, the said Sigismund Leoni, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their
hands and seals, should particularly describe and ascertain the nature
of the said Invention, and in what manner the same was to be per-
formed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said Sigismund Leoni, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawings hereunto
annexed, and to the letters and figures marked thereon (that is to
say) :-
My Invention of "Improvements in Apparatus for Cooking and
Lighting by Gas," relates with reference to cooking apparatus to kitchen
ranges, and consists in the construction of an open or unenclosed range
composed of a frame (by preference of gas piping) and open gas rings
I similar to those represented and described in the Specification of a Patent
granted to me, and bearing date Twelfth October One thousand eight
hundred and sixty-eight, No. 3124. Fitted to the said frame are a
series of shelves to receive culinary vessels and articles. The gas rings
are supported as required by portions of the said frame in such a manner
as to admit of various kinds of food being arranged over and under the
gas rings so as to be cooked by the heat radiating therefrom by the aid of
heat reflectors and heat diffusers arranged in modes similar to those
described in the Specification above referred to. The open or unenclosed
frame of the range may be constructed otherwise than as composed
entirely of gas piping, but in any case an arrangement of gas pipes is.
required in order to convey gas from the meter to the gas rings. The
range is or may be supported on wheels or castors to admit of its being
readily moved from one part of a kitchen to another.
And my Invention with reference to lighting apparatus consists in the
adaptation and application to gas burners of a chamber in the shape of
a cap or cover composed of adamas, steatite, soapstone, or other clay

page_text: material forming a bad conductor of heat, and thus capable of becoming
readily heated and retaining the heat in the said chamber, through
which the gas passes and becomes heated just before it emerges from
the outlet aperture or apertures of the burner. By this means the
illuminating power of the gas is considerably increased and the con-
sumption of gas reduced.
Having thus stated the nature of the said Invention, I will proceed to
describe more particularly in what manner the same is to be performed
by reference to the accompanying Drawings, in which are represented
an open kitchen range and a heating chamber for gas burners as above

page_text: adapted and applied a chamber M composed of adamas, steatite, soap-
stone, or other clay material forming a bad conductor of heat, and being
thus capable of becoming heated from the burner and retaining the
heat. This chamber is fitted so that the gas must pass through it on its
way to the burner and thus become heated before it enters the burner.
Figures 7 and 8 represent different forms of burners L with the heating
chamber M combined therewith, and Fig. 9 represents a chamber with
an opening or openings at the top to form the burner. In all these
and any other suitable varieties of forms of burner the chamber may be
adapted to produce the effect common to them all in previously warming
the gas just before it issues from the outlet or outlets of the burner,
therefore retarding the combustion and increasing the illuminating
power.
Having thus described the nature of the said Invention, and in what
manner the same is to be performed, I hereby declare that what I claim
as of my Invention is,―
First. The construction of open or unenclosed kitchen ranges with gas
pipes (forming the framing or otherwise) combined with open gas rings
for cooking purposes, as described.
And, secondly. The adaptation and application to gas burners of a
heating chamber composed of adamas or other suitable bad conductor
of heat for the purpose of heating the gas before it reaches the burner, as
described.
In witness whereof, I, the said Sigismund Leoni, have hereunto
set my hand and seal, the Second day of May, in the year of our
Lord One thousand cight hundred and seventy.
Witness,
W. A. JACKSON,
8, Quality Court,
Chancery Lane, W.C.
S. LEONI. (L.S.)