IMPROVEMENTS IN AND CONNECTED WITH BAKERS' OVENS, AND IN THE UTILIZATION OF THE HEAT THEREFROM
Year: 1878

page_text: LETTERS PATENT to Peter Jensen, of 33, Chancery Lane, in the County of
Middlesex, for the Invention of "IMPROVEMENTS IN AND CONNECTED WITH
BAKERS' OVENS, AND IN THE UTILIZATION OF THE HEAT THEREFROM." A
communication from abroad by Francois Alexandre Lamoureux, of Paris,
France.
Sealed the 1st November 1878, and dated the 3rd May 1878.
PROVISIONAL SPECIFICATION left by the said Peter Jensen at the Office
of the Commissioners of Patents on the 3rd May 1878.
PETER JENSEN, of 33, Chancery Lane, in the County of Middlesex. " IMPROVE-
MENTS IN AND CONNECTED WITH BAKERS' OVENS, AND IN THE UTILIZATION OF THE
HEAT THEREFROM." (A communication from abroad by Francois Alexandre
Lamoureux, of Paris, France.)
The employment of motors in bakerys has always been a problem difficult to
solve, and this is easy to explain; the motor, which is specially applicable to drive
kneeding troughs, can be only utilized under special conditions with frequent inter-
missions, and this requires special attention.
According to this Invention the waste heat of the furnace is utilized in such
manner as to store up a sufficient quantity of steam to supply a motor powerful
enough to drive a kneeding trough mechanically.
In a baker's oven of ordinary construction I place preferably at or about the
centre thereof a fire-place, and on each side and end there is a boiler tube or boiler,
provided naturally with the usual safety valves, and fitted generally as such
apparatus should be.
It has been found that using only the heat of the furnace made by wood in the
ordinary way the temperature will be sufficient to be able to obtain in the boiler a.
sufficient pressure for the supply of the motor to drive mechanical kneeding
trough.
The heating and the kneeding are two operations distinct from one another. At
the heating of the furnace, if we suppose the water to be cold in the boiler at the;

page_text: moment of firing, it will soon acquire a temperature sufficiently high, which will
become developed by the heat acquired, and it will be continually maintained,
because the furnace preserves its heat for à long time, and the quantity of steam
stored up will be sufficient for the time the motor has to work during the kneeding,
but if thought necessary, and for some purposes it may be advisable, a sup-
plementary fire-place may be arranged to be used in case of need, but it would
not often be required.
The Invention is not limited to the precise arrangement indicated.
The Invention essentially consists in the employment of a fire-place in bakers'
ovens in combination with a boiler or boiler tubes, the steam from which is utilized
to work the kneeding trough or other appliances, as may be required, and the
apparatus is intended to be used alone or in combination with a supplementary
fire-place.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Peter Jensen in the Great Seal Patent Office on the 2nd November
1878.
"
"IMPROVE-
PETER JENSEN, of 33, Chancery Lane, in the County of Middlesex.
MENTS IN AND CONNECTED WITH BAKERS' OVENS, AND IN THE UTILIZATION OF THE
HEAT THEREFROM." (A communication from abroad by Francois Alexandre
Lamoureux, of Paris, France.)
The employment of motors in bakerys has always been a problem difficult to
Bolve, and this is easy to explain; the motor, which is specially applicable to drive
kneeding troughs, can be only utilized under special conditions with frequent inter-
missions, and this requires special attention.
According to this Invention the waste heat of the furnace is utilized in such
manner as to store up a sufficient quantity of steam to supply a motor powerful
enough to drive a kneeding trough mechanically.
The accompanying Drawings will sufficiently explain how the Invention may be
conveniently carried into effect.
Fig. 1 is a front elevation; Fig. 2, a vertical cross section; Fig. 3, a vertical
longitudinal section; and Fig. 4, a plan of a baker's oven constructed according to
this Invention.
In a baker's oven a of ordinary construction I place, preferably at or about the
centre thereof, a boiler b, and on each side and end there is a boiler tube c or boiler
tubes provided with the usual safety valves, and fitted generally as such apparatus
should be.
It has been found that using only the heat of the furnace made by wood in the
ordinary way the temperature will be sufficient to be able to obtain in the boiler
a sufficient pressure for the supply of the motor to drive a mechanical kneeding
trough.

page_text: The heating and the kneeding are two operations distinct from one another. At
the heating of the furnace, if we suppose the water to be cold in the boiler at the
moment of firing, it will acquire a temperature sufficiently high, which will become
developed by the heat acquired, and it will be continually maintained, because the
furnace preserves its heat for a long time, and the quantity of steam stored up
will be sufficient for the time the motor has to work during the kneeding, but if
thought necessary (and for some purposes it may be advisable) a supplementary
boiler may be arranged to be used in case of need, but it would not often be
required.
Having now described the nature of the said Invention, and in what manner
the same is to be performed, I declare that without limiting the Invention to the
precise arrangement described and shown, I claim, the employment of a boiler in
bakers' ovens in combination with a boiler or boiler tubes, the steam from which is
utilized to work the kneeding trough or other appliances, as may be required, alone
or in combination with a supplementary boiler, all substantially in manner and
for the purposes herein-before described and illustrated in the accompanying
Drawings.
In witness whereof, I, the said Peter Jensen, have hereunto set my hand.
and seal, this Second day of November, in the year of our Lord One thousand
eight hundred and seventy-eight.
PETER JENSEN. (L.s.)