AN Empire PROCESS FOR EXTRACTING FROM THE BLOOD OF ANIMALS FOR MEDICINAL PURPOSES و
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by Martin Haeffner at the Office of
the Commissioners of Patents on the 9th June 1883.
"AN IMPROVED METHOD OR
MARTIN HAEFFNER, of Berlin O, German Empire
PROCESS FOR EXTRACTING FROM THE BLOOD OF ANIMALS
FOR MEDICINAL PURPOSES
و"
A PRODUCT SUITABLE
My invention relates to the extraction from the blood of animals which are used
for human food, of a compound containing principally hemoglobin, and suitable
for medicinal purposes
In carrying the said invention into practice, the blood of animals which have
been killed in a thoroughly healthy state is received in shallow basins, and
immediately covered with cotton wool in order to allow only a slow filtration of
the air necessary for the coagulation of the blood. The gelatinous coagulated
mass thus obtained is subsequently placed in a colander and cooled down to a
temperature of from 3° to 4° centigrade by means of a current of cold air, in order
to prevent the separation of the serum. A solution of acetic acid (at the most
about 4) is subsequently sprinkled over the mass, whereby a rapid and abundant
separation of the hæinatine is effected
"
The mass being cut up. into pieces having the shape of cubes the "hæmoglobin
runs out and is collected in a basin This operation must be interrupted as soon
as the serum begins to flow out in quantity., which generally occurs after about a
minute. The greater the care observed in interrupting the above operation in
proper time the purer is the hæmoglobin obtained. The above operation must be
further interrupted immediately the liquid becomes lighter in color, the liquid
containing the hemoglobin being of a dark red color.,
It is difficult, whatever skill may be used to avoid a small quantity of serum
escaping with the "hæmoglobin" containing liquid and the efficaciousness of the
preparation is not greatly affected thereby but the value of the preparation is.
diminished.
In order to be able to extract from the liquor the serum which has escaped, the
fluid is poured into a high glass cylinder at the bottom of which the haemoglobin,

page_text: settles after a few hours, owing to its greater specific gravity; the serous and clear
liquid which comes to the top of the vessel is carefully drawn off by means of a
syphon. The fluid which is left and contains mostly haemoglobin is evaporated
in vacuo at a temperature of between 30° and 40° centigrade until a shining red
brown mass is obtained, which, when pulverized, has almost a red appearance and
which contains in the form of an organic composition, all the iron contained in the
blood of animals.
The evaporation of the prepared haemoglobin is effected at a low temperature
in order to ensure the complete solubility of the product in water which renders it
highly useful for medicinal purposes.
The substantial advantage of the above described process in comparison with all
other methods is that in extracting the organic iron combinations contained in
the blood no foreign substances like salts, sugar or the like is mixed with it, so
that the product obtained is much purer and much more soluble than any other
which is a matter of great importance in considering the special object for which
it is, required.