IMPROVE- MENTS IN HOT AIR COOKING APPARATUS
Year: 1886

page_text: I DAVID GROVE of N° 24 Friedrich Strasse in the City of Berlin, Germany,
Sanitary Engineer, do hereby declare the nature of my Invention for "IMPROVE-
MENTS IN HOT AIR COOKING APPARATUS" and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
My invention relates to improvements in hot air cooking apparatus wherein the
same process is applied to cooking purposes as is described in my British Patent
N° 1780% for baking purposes by employing heated air whereby the enormous
advantages are attained that the articles of food are protected from becoming over-
heated and burning which is liable to occur with all cooking apparatus with the
exception of those heated by steam, and a rapid and absolutely perfect regulation
of the heat applied is achieved.
For this purpose the elongated slots for the air to circulate through are provided
with regulating slides which can be readily manipulated from the exterior of the
cooking apparatus.
Figure.1 is the cross section of one of my improved cooking apparatus,
Figure 2 is a longitudinal section of the same and
Figure 3 a horizontal section of the apparatus on the line A B in Fig. 1.
In the accompanying sheet of drawings I have represented a cooking apparatus
with three boilers or cooking vessels a which hang free in the top of the cover or
superior part of the apparatus.
The firing i is arranged at the one end of the apparatus from whence the fire
gases are led through the calorifère or heater c to the chimney.
A horizontal partition wall is arranged between the heater c and the cooking
vessels a which said wall is provided with elongated slots ɗ e.
The air heated by the calorifère or heater ascends through the slot d, plays
around the cooking vessels a as represented by the arrows in Figure 1 and after
giving off a great part of its heat descends to the space f where the same is again
heated and thus continues its circulation-The elongated slots de are provided
with slides g, h, running the entire length of the said slots and being guided
in lateral guides, so as to vary the size of the said slots and be able to readily
regulate the same.

page_text: The handles of the said slides protrude through the brickwork or other casing of
the apparatus so that the same can be readily operated.
The number of cooking vessels and the arrangement of the parts of my said
cooking apparatus can be modified in various ways without departing from the
tenor of my invention.
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. The application and employment of the system of hot air heating applied for
baking purposes as set forth in my patent No 1780%, to a cooking apparatus by
causing the air heated by the calorifère or heater c to circulate around the cooking
vessels a, substantially as set forth and shown.
2. My improved hot air cooking apparatus or any mere modification of the same
substantially as described in the foregoing specification and represented on the
accompanying drawings.