IMPROVEMENTS IN PRESERVING MILK
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by the said Heinrich Wilhelm Ludwig
Otto von Roden at the Office of the Commissioners of Patents on the
15th January 1883.
HEINRICH WILHELM LUDWIG OTTO VON RODEN of Hamburg, German Empire,
"IMPROVEMENTS IN PRESERVING MILK "
This Invention relates to improvements in preserving milk, in which the germs
of fermentation are killed by heating; and the object of my improvements is the
saturation of such milk with carbonic acid in order to prevent the formation of
new germs of fermentation and the revivification of those contained in the milk.
To this effect I heat milk in a vessel or boiler until the air mechanically mixed
with the milk is driven out either by heating alone or by the application of a
vacuum or by means of the action of both; then I raise the temperature in the
hermetically closed boiler to such a degree in order to destroy the germs of
fermentation. After heating the milk in such a manner at least during an hour, I
cool it slowly down to about 46 degrees of Fahrenheit and then force into the
boiler carbonic acid, thereby permanently stirring the milk. When the milk is
entirely saturated with carbonic acid, 1 fill it in air-tight bottles or other vessels.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Heinrich Wilhelm Ludwig Otto von Roden in the Great Seal Patent
Office on the 11th July 1883.
HEINRICH WILHELM LUDWIG OTTO VON RODEN of Hamburg German Empire
"IMPROVEMENTS IN PRESERVING MILK"
This Invention relates to improvements in Preserving Milk in which the germs
of fermentation are killed by heating and the object of my Improvemonts in the
saturation of such Milk with Carbonic Acid in order to prevent the formation of
new germs of fermentation and also prevent the revivification of those remaining
in the Milk.
To this effect I heat Milk in a Vessel or boiler until the air mechanically mixed
with the Milk is driven out either by heating alone or by the application of a
vacuum, or by means of the action of both. Then I raise the temperature in the
hermetically closed vessel to such a degree as to destroy the germs of fermentation.
After heating the Milk in such a manner at least during an hour, I cool it
slowly down to about 46 degrees of Fahrenheit.
According to the use which is to be made of the Milk either Carbonic Acid may
be forced directly into the boiling vessel and the Milk therein, or such Milk may
be drawn off into smaller vessels or bottles and the Carbonic Acid forced therein,
in any case the milk should be stirred continually during the introduction of
Carbonic Acid, and after the introduction of Carbonic Acid the vessels or bottles
containing such Milk saturated with Carbonic Acid are to be well closed in order
to prevent the carbonic Acid from escaping.
Having thus described the nature of my Invention I would have it understood
that what I claim is
The process of Preserving Milk by introducing Carbonic Acid into the vessels
or bottles containing such Milk substantially as described.
In witness whereof I the said Heinrich Wilhelm Ludwig Otto von Roden
have hereunto set my hand and seal this third day of July in the year of
our Lord One thousand eight hundred and eighty three.