AN IMPROVED PORTABLE GAS OVEN FOR CULINARY PURPOSES
Year: 1871

page_text: LETTERS PATENT to Peter Gent, of New Brighton, in the County of
Chester, for the Invention of "AN IMPROVED PORTABLE GAS OVEN FOR
CULINARY PURPOSES."
Sealed the 3rd May 1872, and dated the 9th November 1871.
PROVISIONAL SPECIFICATION left by the said Peter Gent at the
Office of the Commissioners of Patents, with his Petition, on the
9th November 1871.
I, PETER GENT, of New Brighton, in the County of Chester, do hereby
declare the nature of the said Invention for "Ax IMPROVED PORTABLE GAS
OVEN FOR CULINARY PURPOSES," to be as follows:-
-
My Invention for an improved portable gas oven, consists of a self-
contained portable oven for culinary purposes, constructed of fire-brick
tiles, terra cotta, porcelain, or carthenware of any description in the
following manner :-The bottom and top are composed of two slabs of
fire-brick or other suitable earthenware, and have a small raised ledge
all round. The sides and back end are composed of smaller slabs of
fire-brick or other suitable carthenware, made so as to tongue, groove,

page_text: 'or rabbett together. The sides and back end fit between the ledge on
the top and the ledge on the bottom. The ledge on the bottom slab
is a little higher on the front side and is fitted with three or more
apertures, through which pass gas pipes with burners. The gas used it
is preferred to mix with atmospheric air. The top of the oven is fitted
with a flue or pipe to carry away the waste heat. The sides of the oven
have grooves running their entire length, and so arranged that shelves
formed of slabs of suitable earthenware may slide in the respective
grooves. There may be three, four, or more shelves in each oven.
These shelves are made with a zig-zag edge, a portion of which bears
in the groove, the rest leaving apertures for the distribution of the hot
air generated by the gas. In lieu of the grooves the shelves may be
held in position by suitable lugs, or provisions attached to the sides of
the oven.
The front of the oven is fitted with a suitable door of fire-
brick or other earthenware or of iron hinged to one side and latching
on the other side. Inside the oven and a short distance back from this
door are two smaller doors hinged to the side in a similar manner, but
in this case the latches may be dispensed with. These doors may be
composed of sheet iron or other suitable metal. These inside doors
give access to the shelves upon which the articles to be cooked are
placed. The whole oven is fitted with strong castors or wheels, so that
it may be moved easily, or it may be fitted on a carriage, the gas being
supplied by a flexible tube.
In some cases the bottom of the oven may be perforated under the
burners to supply air, but in most instances sufficient air will find
access by the apertures through which the gas pipes pass.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Peter Gent in the Great Seal Patent Office on the
7th May 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PETER 3
GENT, of New Brighton, in the County of Chester, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Ninth day of November, in the year
of our Lord One thousand eight hundred and seventy-one, in the thirty-
Afth year of Her reign, did, for Herself, Her heirs and successors, give a

page_text: .
and grant unto me, the said Peter Gent, Her special licence that I, the
said Peter Gent, my executors, administrators, and assigns, or such
others as I, the said Peter Gent, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term 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 "AN IMPROVED PORTABLE GAS OVEN FOR CULINARY
PURPOSES," upon the condition (amongst others) that I, the said Peter
Gent, my executors or administrators, 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 performed, 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 Peter Gent, 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 :—
The object of my Invention is to construct gas ovens so as to utilize all
the heat and to mitigate or entirely dispense with the noxious properties
of the gas.
This desideratum I arrive at by using atmospheric gas
burners in an oven constructed of slabs of fire-brick or other suitable
porous carthenware.
My Invention for an improved portable gas oven for culinary purposes
consists of a self-contained oven constructed of fire-brick tiles, terra
|cotta, or carthenware of any description. The base, top, and sides are
composed of slabs of fire-brick or other carthenware made to dovetail,
tongue, groove, or rabbet together, and may if necessary be held in
position with the addition of Tand angle iron bands. The front of the
oven is fitted with a suitable door of fire-brick or other earthenware or
iron hinged to one side and latching on the other side. Inside this
door are two smaller doors hinged to the side in a similar manner, but in
this case latches are dispensed with, the doors being kept closed by
pressure from the outer door. The sides of the oven have grooves
running their entire length and so arranged that shelves formed of slabs
of suitable earthenware may slide in the respective grooves. These
shelves are fitted with a zig-zag edge, or are perforated to allow the free

page_text: distribution of hot air. The oven is heated by atmospheric gas burners,
and the top of the oven is fitted with a flue to carry away waste heat. In
some cases the oven may be fitted with castors or wheels, so that it may
be moved easily, or may be fitted on a carriage, the gas being supplied
by flexible tubes.
In order that the nature of this Invention may be more readily seen,
I have hereunto attached a Sheet of Drawings illustrating an oven
constructed according to my Invention, which will enable any person
to carry the same into practical effect, Like letters marked on the
Drawings are used to denote similar parts throughout the various
views.
Figure 1 is a sectional end elevation of an oven constructed accord-
ing to my Invention; Figure 2 is an end view of same; Figure 3
is a plan of base; Figure 4 is a sectional plan of oven showing shelf
and doors; Figure 5 is a plan of top, and Figure 6 is a sectional side
elevation of oven.
A, A', A³, A³, are four slabs or tiles of fire-brick forming base,
held in position by the angle iron frame B. These base slabs have a
tongued groove to allow of slabs C forming the sides to fit therein. The
side slabs C and back slabs C', are similarly tongued together and
held in position by the iron D, which bind them to the top slabs E.
F, F, F, are grooves in the side slabs to support the shelves G. The
shelves G are composed of an angle iron frame H into which fit earthen-
ware perforated tiles K, K, K, K. The shelves can be shifted to
any of
the grooves F as deemed expedient. L, L', L, are atmospheric gas
burners, which are supplied by any suitable arrangement of gas piping
and cocks from the meter. In the case of the oven being portable, a
flexible supply tube may be used. The gas burners L pass through
M, M, M, apertures in a front ledge N of the oven. The oven is fitted
with a main door O hinged to one slab C and latching to the other slab
C. Inside of this door are two smaller doors P, P¹, which open into
the interior of the oven. The oven is fitted with a flue pipe R to
carry away waste heat. The top of the oven may be fitted with slabs
S, S, S, S, supporting bars T forming a gridiron, under which are a
series of atmospheric burners U, which may be used for boiling, cooking,
grilling, or other like purposes. .V are air holes cut in the base slabs.
The application of the oven is thus:-The atmospheric gas being
ignited at the burners L, L', L, the meat or other food to be cooked is

page_text: placed on the slabs K. forming the shelves. The heat circulates through
the oven, is retained and nursed by the fire-brick tiles composing the
oven, and the food is cooked in most perfect manner free from taint
or smell, as the temperature is enabled to be regulated to the greatest
nicety by the heat retaining power of the slabs. .
D
Having now fully described and explained the nature and purposes
of my Invention, and how the same is to be carried into practical effect,
I wish it to be clearly understood that I do not confine myself to the
several proportions and relative dimensions of the various parts of the
oven as shown, as it will be readily seen that the same may be con-
siderably varied; but what I claim as the Invention secured to me
by Letters Patent as aforesaid is, the construction, arrangement, and
combination of an oven built of fire-clay slabs or tiles, or other porous
earthenware, and heated by atmospheric gas burners, substantially in
the manner and for the purposes herein-before described, set forth, and
illustrated.
.
In witness whereof, I, the said Peter Gent, have hereunto set my
hand and seal, this Sixth day of May, in the year of our Lord
One thousand eight hundred and seventy-two.
0
Witness,
FREDERICK J. CHEESBROUGH,
of 15, Water Street,
Liverpool.
PETER (L.s.) GENT.