IMPROVEMENTS IN BAKERS OVENS
Year: 1884

page_text: COMPLETE
SPECIFICATION.
I, GEORGE EDSON BAILEY 323 High Holborn in the County of Middlesex do
hereby declare the nature of this Invention for "IMPROVEMENTS IN BAKERS
OVENS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
,,
This Invention relates to improvements in the construction of bakers ovens.
The chamber of an oven embodying this Invention is by reason of the construction
and location of the furnace and the arrangement of the flues supplied with direct
heat from the furnace which, by suitable adjustment of the dampers, can be equally
and uniformly distributed throughout the oven chamber; the heat may also be
increased or diminished in any part or even entirely cut off.
The oven is illustrated by the accompanying Drawings in which
Figure 1 is a vertical longitudinal section.
Figure 2 is a broken transverse section on lines x. x and y. y. Figure 1.
Like letters represent like parts in both Figures.
A is the chamber of the oven, B the furnace b representing the fire bars b₁ the
ashpit and c the door. C is a flue connecting each side of the furnace with the
chamber A the latter communicating with the chimney by flue D. Suitable
dampers c are provided. E. E. is an air space or chamber formed between the
furnace and the chamber A by supporting the bottom A¹ of the chamber A upon
short columns or pillars E¹ resting on the roof B' of the furnace. The air space
communicates with the flue F and prevents over heating of the bottom of the
chamber A and serves to distribute the heat more evenly through the whole oven.
F is a flue at the back of the furnace also leading to the chamber A. G is a
"syphon flue" of the special form clearly shown in Figure 2. The "syphon flue
carries off vapors and steam arising during the baking and is so constructed that
the current therein arises merely from expansion of air and gases within the
chamber A but no draft is produced therein this can be effected by suitably
arranged and operated dampers.
"
The syphon flue when thus used allows the escape of all noxious vapours without
producing any loss of heat.
It may be mentioned that in Figure 2 the left hand half is a cross section upon
line y. y. of Figure 1. and shows a part of the oven lying at a greater distance from
the front than the part at the right hand side which is a cross section upon line x. x.

page_text: Figure 1, and the Figure is thus drawn for the purpose of enabling the flues to be
more clearly shown. The flues are fitted with dampers wherever required.
The oven is operated as follows,―
When the fire is first lighted the smoke is allowed to pass by the flues C into the
oven A and away by the flue D but when it has burnt up bright the damper D' is
closed so as to retain the heat in the oven the syphon flue G serving to carry off
the steam and noxious gases that may be formed.
Dampers are provided wherever required in the flues so as to regulate the heat
and distribute it where most required.
Details of construction and arrangement may be altered to suit different
requirements without departing from the spirit of this Invention.
Having now particularly described and ascertained the nature of my said
Invention in what manner the same is to be performed I declare that what
I claim is
1. The syphon flue G communicating with the oven A substantially in the
manner and for the purpose specified.
2. The combination of the oven A. furnace B communicating with A by the
flues C. and air space or chamber E between the oven and furnace the whole
constructed and operating substantially in the manner described as shown in the
Drawings.
3. The air space or chamber E between the furnace, B and oven A substantially
as specified.