Improvements in or relating to Ovens.
Year: 1899

page_text: Date of Application, 20th Feb., 1899 -Accepted, 15th Apr., 1899
COMPLETE SPECIFICATION.
Improvements in or relating to Ovens.
I, GOTTFRIED HOFER GÖTSCHMANN, Hotel Proprietor, of Unterer Quai 45, Biel,
in the Republic of Switzerland, 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; -
The present invention relates to an oven, the cooking space of which can be
heated both from below and from above.
In the accompanying drawing an oven is illustrated by way of example of a
suitable construction in which Figure 1 is a front elevation; Figure 2 a vertical
longitudinal section on the line 1-I Figure 1; Figures 3 and 4 being vertical
cross sections on the lines (IV-IV) and (V-V) respectively of Figure 2, and
Figures 5 and 6 horizontal sections on the lines (II-II) and (III-III) respec-
tively of Figure 1.
Above the baking or cooking space a (Figure 4) which can be closed by the
door b, is provided a horizontal winding passage c, c, 2, and another horizontal
winding passage e e¹. e² underneath both communicating with a vertical
passage d. The passage c communicates with the fire chamber f, closed in front
by a door f, whilst the passage communicates with the chimney flue.
The heat generated on the grate f², passes in the direction of the arrows, along
the passages e. c, over the baking chamber a, thence along the passage d, and
through the passages e e e e³, underneath the baking space, and thence into the
chimney : thereby heating the baking space from above and below ¿.e. pro-
viding it with a heated upper and lower surface.
The ash-pit under the grate f2 may be shut off by a door h.
To facilitate the cleaning of the passages, there are provided two doors i for
the passage c. c, and doors for the passage e, e¹, e, at the front of the oven.
In addition the following arrangement has been devised for the purpose of
providing heated air for the fuel on the grate f, with a view of consuming or
preventing the formation of smoke.
The air necessary for the combustion of the fuel may be drawn in the fire
door f and ash-pit door h being closed, through a flue m. m¹ m² m² m² under
the grate f, as indicated by the arrows, receiving the heat radiated from the
heated passages as it passes.
To enlarge the heating surface underneath the baking space a, the plates a¹
forming the under surface of the baking space, and covering the lower passages
may be provided with fluting a².
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. An oven with indirect heating provided with heating passages extending
from the fire chamber and comprising one or more winding passages above and
below the baking chamber. and finally entering the chimney Aue whereby the

page_text: heating gases are so conducted as to heat the baking chamber both from above
and below, substantially as described.
2. In an oven of the kind described a passage as m m. m³ m³ m³, by means
of which heated air is introduced under the fuel on the grate, substantially as
described.
3. The arrangement in an oven of the kind described of fluted plates a³ beneath
the baking space with a view of increasing the heating surface, substantially as
described.
4. The complete oven substantially as described or illustrated in the accom-
panying drawing.
Dated this 20th day of February 1899.
BOULT & WADE,
Agents for the Applicant.