IMPROVE- MENTS IN BAKING OVENS
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said Wilhelm Anton Friedrich
Wieghorst at the Office of the Commissioners of Patents on the 1st September
1883.
WILHELM ANTON FRIEDRICH WIEGHORST of Hamburg Germany "IMPROVE-
MENTS IN BAKING OVENS"
This invention relates to improvements in baking ovens which are heated by
pipes that are advantageously entirely closed and partly filled with water, and
the objects of my improvements-are, first, to heat two or more baking chambers
arranged one above the other by the same fire place; second, to obtain throughout
an equal heat in all the chambers; and third, to facilitate the charging of the
oven.
I attain these objects by the mechanism illustrated in the accompanying
drawings in which-`
Figure 1 is a longitudinal section of an oven with two baking chambers:
Figure 2 is a plan thereof, partly in section; Figure 3 is a back view, and Figure 4
a front view; Figure 5 is a vertical section of an oven with three chambers, and
Figure 6 a sectional side elevation thereof.
Similar letters refer to like parts throughout the several views.
The oven illustrated by Figures 1 to 4 is heated by the pipes h partly filled
with water and closed at both ends one of which is exposed to the heat of the
fire box a The fuel is introduced into the fire box through the doors b.
The ends of the pipes h which enter into the fire box a are heated by the fire
and communicate the heat by means of the water enclosed in the pipes h and the
steam therefrom generated to those parts of the pipes h which are inside the
baking vault or chamber. The soot, which will cover by degrees the ends of
the pipes entering into the fire box and as a non-conductor will present a quick
communication of the heat developed in the fire box, is taken off through the

page_text: doors & and b, which are arranged in such a manner as to make the pipe ends
easily accessible. The draft of the fire box is regulated by the damper y.
The baking vault or chamber is divided by one or more horizontal corrugated
plates in two or more baking chambers a a, each of which is heated by two
series of pipes h, the one at the floor and the other at the top. These ends of the
pipes which enter into the fire box a is pretty short in the lowest series and
become longer according to their increasing distance from the fire grate al in such
a manner as to obtain the largest heating surface in the series, which is at the
ceiling of the uppermost chamber.
Each chamber is provided with rails g for guiding the rolling platform z thereon.
To put the bread or other material in the oven the platforms z are drawn up to
the outside rails z¹ fixed the stands u; there they are filled and rolled into the
baking chambers again.
Each baking chamber is closed by a door v fixed to a shaft w. The latter is
rotated by means of a counter weight q, the connecting chain a¹ of which is
fastened to a drum w keyed to the shaft w and drawn over pulleys 8.
The oven illustrated by Figures 5 and 6 is constructed according to the described
principle; it is provided with three baking chambers and serves more especially as
a ship's oven. A receptacle B arranged around the chimney pipe C is used for
heating water,

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Wilhelm Anton Friedrich Wieghorst in the Patent Office on the
1st March 1884.
WILHELM ANTON FRIEDRICH WIEGHORST, of Hamburg, in the German Empire,
"IMPROVEMENTS IN BAKING OVENS "
This invention relates to improvements in baking ovens which are heated by
pipes entirely closed and partly filled with water, and the objects of my improve-
ments are first, to heat two or more baking chambers, arranged one above the
other, by the same fire place; second, to obtain throughout an equal heat in all
the chambers; and third, to facilitate the charging of the oven.
I attain these objects by the mechanism illustrated in the accompanying
drawings, in which—
Figure 1 is a longitudinal section of an oven with two baking chambers,
Figure 2 is a plan thereof, partly in section; Figure 3 is a back elevation, and
Figure 4 a front elevation; Figure 5 is a vertical section of an oven with three
chambers, and Figure 6 a sectional side elevation thereof.
Similar letters refer to similar parts throughout the several views.
;
The oven illustrated by the Figures 1 to 4 is heated by the pipes h partly filled
with water and closed at both ends, one of which is exposed to the heat of the
fire box a The fuel is introduced into the fire box through the doors b.
The ends of the pipes h which enter into the fire box a are heated by the fire
and communicate the heat by means of the water enclosed in the pipes h, and the
steam therefrom generated, to those parts of the pipes h which are inside the
baking vault. The soot which will cover by degrees the ends of the pipes lu
entering into the fire box and as a non-conductor will prevent a quick communi-
cation of the heat developed in the fire box, is taken off through the doors d and b
which are arranged in such a manner as to make the pipe-ends easily accessible.
The draft of the fire box is regulated by the damper y.
The baking vault is divided by one or more horizontal corrugated plates ✗ into
two or more baking chambers A. A each of which is heated by two series of
pipes h, the one at the floor and the other at the top. These ends of the pipes h,
which enter into the fire box a, are shorter as shown at Figure 6 in the lowest
series and become longer according to their increasing distance from the fire
grate a, in such a manner as to obtain the largest heating surface in the series
which is at the ceiling of the uppermost chamber.
Each chamber is provided with rails g for guiding the rolling platform Z thereon.
To put the bread in the oven, the platforms Z are drawn up to the outside rails Z¹
fixed to the stands u; there they are filled and rolled into the baking chambers
again.
Each baking chamber is closed by a door V fixed to a shaft W. The latter is
rotated by means of a counter weight q the connecting chain s¹ of which is
fastened to a drum w¹ keyed to the shaft W and drawn over pulleys S.
The oven illustrated by Figures 5 and 6 is constructed according to the described
principle; it is provided with three baking chambers and serves more especially
as a ship's over. A receptacle B arranged around the chimney pipe C is used for
heating water,
Having thus fully described my invention, I wish to claim and secure by Letters
Patent:-
First In a baking oven the combination of two or more baking chambers A
with the fire box a and the pipes h entirely closed and filled partly with water

page_text: and arranged in sets of different length, substantially as and for the purpose
specified.
Second-In a baking oven the combination of the inside rails 9 and outside
rails Zwith the moveable platform Z substantially as set forth.
Third In a baking oven the combination of the door v with the shaft W the
drums w¹ with the chains 8¹ the pulleys S and the counter weights q substantially
as described.
In witness whereof I the said Wilhelm Anton Friedrich Wieghorst have here-
unto set my hand and seal this Twenty fifth day of February in the year of our
Lord One thousand eight hundred and eighty four.
WILHELM ANTON FRIEDRICH WIEGHORST
(LS)
WILHELM ANTON FRIEDRICH WIEGHORST (L.8)