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Патент USA US2109151

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I Feb. 22,1938.
Filed Aug. 16, 1933
Patented Feb. 22, 1938 _
Georg Alexander Krause, Munich, Germany, as
signor, by mesne assignments, to Katadyn Inc.,
New York, N. Y., a corporation of Delaware
Application August 16, 1933, Serial No. 685,502
In Germany August 16, 1932
(Cl. 204--26)
- _ 5 Claims.
Alcoholic beverages, such as cognac, brandy.._
cordials and the like, as well as’ perfumes and
other substances of a related character require
as is known a long period of maturing, until they
acquire a full, well“ rounded taste and aroma. im
mediately after being made they contain harsh
tasting and smelling substances which decompose
gradually during storing and are converted into
indifferent or mild tasting and smelling com
10 pounds.
Especially, the alcohol which is distilled
from potatoes or similar starch containing raw
materials and which forms the basis of most dis
tilled wines, cordials and perfumes contains, even
after most careful puri?cation, harsh irritating
15 ingredients which cover up the aroma of the sub
stances later added for taste and odor, and pre
vent the proper development thereof. Freshly
prepared alcoholic beverages and perfumes are,
therefore, practically unmarketable. A pro
longedstoring period, however, means an unde
sirable burden, on production because of the ne
cessity of invested capital, storage vessels and
The observation was made that algcoh?olic bever
cording to the desired degree of activation the
speed of ?ow and the depth of‘ the active layer
can be so adjusted and proportioned that a de?
nite' time of contact between the liquid and the
active substances is assured. The active layer can
be also adapted in the form of a ?lter, so that the
liquid is clari?ed and matured in a single opera
Besides the mentioned metals their soluble
compounds are also suited to the process ex
plained above, thus, for example, the ?lling bodies
may be coated with silver phosphate instead of
metallic silver.
Another means of treating the liquid according
to the present invention is the electrical method. 15
The liquid'to which, if necessary, a slight con
ductivity is imparted by suitable additions, is
allowed to flow through a vessel in which it is
exposed to a weak direct electric current between
electrodes, of which at least the anode consists 20
of the active metal, for example silver. By
means of adjusting the rate of liquid flow in rela
tion to the electric current the degree of treat
ment can be regulated at will.
taste andf?'g‘rance in surprisingly short time, if
they are treated with certain heavy metals or
The invention, in some of its embodiments, is 25
illustrated in the accompanying drawing in which
Fig. 1 illustrates the above intimated contact
,heavy meat-‘databases. '“ Such metals are in the
method; and
25 ages and perfumes and the like assumeaiich mild
?rst place the oligodynamicwand catalytic,v of
which platinum, _irifd_ii_'fni',“gold', silver, copper, cad
mium, cobaltland'nickelmay be mentioned. Sil
ver'proved to be very e?ective, especially if it is
used in a condition of a microscopically rough,
?ne-layered surface, as has been proved effective
for some time in connection with oligodynamic
sterilization. Besides the mentioned metals,
their alloys as well as their inorganic and organic
compounds are to be considered.
The treatment of the liquid with the active ma
40 terial can be effected in various ways.
By means
of the contact method the liquid is brought for a
short time in contact with the active material.
This can be done by feeding the liquid into a
vessel that is provided with active metal, such as
45 silver. It is advantageous in this regard not only
to coat the walls of the container with the active
material, but to equip the entire container with
inserts or ?lling bodies which consist of or are
coated with the active material. By way of ex
ample, the vessel can be ?lled with small porce
lain rings or with sand or gravel-like material of
2-4 mm. grain which are coated with a ?ne layer
of silver. The liquid can be allowed either to
remain in the treating vessel for a short time or
55 to run through the vessel continuously. Ac
Fig. 2 shows an embodiment of the electrical
Referring now to Fig. l, the apparatus shown
therein comprises a vessel containing bodies
coated with active material or consisting of active
material. Numeral H may be the dome of the
vessel which is joined, as shown, with the lower 35
portion containing the activating bodies men
tioned above and indicated by the numa'al 12.
The walls of the vessel and its parts may also be
provided with active material or may consist of
such material. If desired, suitable neutral ma 40
terial may be employed for the vessel. The liquid
is arranged to enter- the apparatus at I5 and to
leave the same at I6.
The activating bodies I!
may be made, for example, of quartz, gravel or
the like which is suitably coated with active ma- .
terial. Filters or sieves l3 and I4 may be dis
posed as shown, in the nature of retaining mem
bers for securing the desired distribution‘ of the
liquid ?ow over the entire cross sectional area.
of the apparatus. It is understood, of course, 50
that in'place of the activating bodies I2 there
may be provided other means for taking care of
the activating functions. It is possible for ex-,
ample, to provide in the interior of the vessel
suitable ?lters without any activating bodies, as
shown. Legs or uprights may be secured to the to 11m treat the young and raw suitably diluted
?anges’ holding the upper and lower portions of ,wine distillate with metals and then add the ’
the receptacle or vessel as shown in the draw
aromatic substances to it. Likewise frequently
in: in brder to place the device conveniently for in the production of brandy of all varieties not
operation. It should be observed that the liquid, the finished product but the properly diluted al
upon entering the device through the inlet ll cohol or the ‘water serving as diluent may be
spreads gradually within the device due to the treated and the taste-imparting substances may
shape of the treating chamber, thus coming into
contact with the bodies disposed therein.
The apparatus indicated in Fig. 2 comprises a
vessel 2i having an inlet 23 and an outlet 24, the
“be added afterwards.
The invention may be also applied to great ad
vantage in the preparatloéxof gureng?qtwalcohoi
from raw potato spirit. In order to bring potato
liquid ?owing in the direction of the arrows. The _,_.spirit"tc"the--requisite alcoholic content and at
inlet and outlet openings are in each structure the same time to free it from evil tasting and
shown substantially of the same size. Numeral smelling ingredients it is usually subjected to a
15 22 indicates a number of members or plates made
bothersome recti?cation, nitration and puri?ca 16
- of active metal, for example, of silver or of suit
ably treated carriers of a suitable active sub
stance. These plates are disposed to serve as
‘cathodes and as anodes, respectively, and are
20 for this purpose included in the circuit to the
pol-changing device 25, provided for periodically
changing the polarity of the electrodes. The
circuit extends from the pol-changer 25 to a
source of current 29 by way of the amperemeter
25 26 and the adjustable resistance ‘28. The volt
tion with activated carbon. The same result can
be attained more quickly and with less expense,
if a treatment with active metal conforming to
the invention is introduced somewhere in the
purifying process.
Particular care is to be observed in the treat
ment of perfumes.
The treatment of ?nished
perfumes is mostly impossible, because the sensi
tive odoriferous substances su?er under the di
rect in?uence of the active material. As a rule
meter 21 may be bridged across the feeding con
the initial liquid for perfumes is treated before
ductors as shown. The current source may be . the addition of the fragrant substances. Essen
an ordinary portable battery since only relatively tially the alcohol itself is to be considered for
weak current is required for the operation of the treatment or under certain circumstances dis
'30 device. The operating current may be accurately
tilled water or the mixture of both liquids. If 30
adjusted by means of the resistancev 28 and the the‘ fragrant substances are added after the
instruments 26 and 21 which will serve the pur
treatment, then the desired aroma at once mani
pose of indicating operating conditions at any fests itself richly and completely, while without
time and will also serve for the purpose of accu-. this novel treatment of the initial matter the
35 rately determining the desired activating condi
harsh irritating odoriferous ingredients almost 35
It will be understood from the description of
the apparatus rendered above that the degree oi‘
activation during the time of contact between
40 the activating bodies and the liquid may be con
trolled by the reciprocal adjustment either of the
layer, such as the layer l2 in Fig. l and the rate
of flow or merely by the rate of ?ow relative to
the amount of current in the case of the embodi
45 ment shown in‘ Fig. 2.
Additional possibilities for practicing the in
vention are indicated below.
A measured amount of a soluble metallic salt
may be directly dissolved in the liquid or a pre
50 determined amount of a colloidal metal or me
tallic salt solution may be added tovthe liquid.
The invention is in no way limited to the cited
methods of treatment, but is capable of realiza
tion with the use of any method according to
55 which the active material is allowed to act on the
liquid ‘in a regulated manner.
Very favorable results were obtained with vari
ous kinds of brandies, forv example, gentian,
cherry brandy, Nordhauser and the like. Like
60 wise sweet cordials and wines were successfully
obliterate the fragrance of the added substance,
with the treatment as described they will en
tirely disappear.
In the process according to the invention the
amounts of metal passing into the liquids are ex 40
tremely small and for the most part scarcely rec
ognizable with the usual analytic methods. One
can naturally through repeated treatment or by
regulating the conditions of treatment raise this
metal content of the liquid at will. Inasmuch 45
as the so attained metal content causes trouble
in its later application, it may be separated ac
cording to one of the known chemical, electro~
chemical or physical methods.
It may be mentioned that the‘ procedure ac
cording to the invention can be carried out with
out any external addition of energy, especially
without heating, in which respect it distinguishes
favorably from other arti?cial aging processes.
Another great merit of this rapid aging and 55
maturing process is that the product not only _
displays its complete mild aroma immediately
after its preparation, but that no reaction oc
curs with subsequent storing as is the case with
treated. With regard to wines, another favor
other rapid aging methods.
In particular, in
typifying substances, because otherwise the aro
l. A process for arti?cially rapidly aging
highly alcoholic liquids which consists in solely
adding to the liquid to be aged predetermined 75
able effect is gained in that the treatment ac the preparation of perfumes, according to this
cording to the invention prevents the 'so-called invention, an odor ?xative such as musk andam
mould and the growth of acetifylng bacteria. bergris does not have to be added. Finally it may
65 For example, a white wine after having been be pointed out that the perfumes, if the pro
treated according to the invention may be left cedure has been carried out with an oligody
for days exposed to the air without growing namically active metal such as silver, have a
mouldy or turning acid, as is otherwise invari
more or less strong sterilizing effect correspond
ably the case.
ing to the degree of activation. In this manner
In many instances it is preferable to treat not a perfume is obtained that acts simultaneously
the ?nished product but they initial or intermedi
as a disinfectant.
ate product before the addition of the aroma or
What I claim is:
matic material would be imured. Thus in the
76 case of brandy made of wine it isvadvantageous
amounts of a colloidal solution of an oligody
namically active metal.
2. In a process for treating highly alcoholic
liquids normally requiring a period of aging for
maturing the same, the steps comprising, pass
ing at least part of said liquid in a controlled
?ow through a chamber and subjecting said liq
uid in said chamber for a very short time to the
action of relatively weak direct current main
10 tained between electrodes of which at least the
anode consists of oligodynamically active metal
whereby oligodynamically active substance is
transferred intosaid liquids to accelerate the ma
turing thereof.
3. The process of rapidly aging alcohol liq
uids comprising, directing said liquids in a sub
stantially continual ?ow through a vessel, sub
jecting said liquids in said vessel solely to the ac
tion of oligodynamically active metal whereby
20 ‘said liquid is activated by the transfer thereinto
of minute amounts of metal in ionic form, and
regulating the degree of activation of said liq
uid‘by selectively adjusting the speed of ?ow of
said liquid through said vessel relative to said
25 metal, whereby a de?nite time of contact be
tween said liquid and said active metal is deter
4. The process de?ned in claim '3, together,
with the step of connecting said oligodynami
cally active metal to a source of weak electric
current, whereby metal is transferred into said
liquid by the action of said current to activate
said liquid, and regulating the degree of activa
tion' of said liquid by selectively adjusting the
rate of ?ow of said liquid relative to said cur
rent, whereby relatively determined amounts of
metal are transferred into said liquid to cause 10
the rapid aging thereof.
5. The process ‘de?ned in claim 3, together
with the step of connecting said oligodynami
cally active metal to a source of weak electric
current, whereby metal is transferred into said
liquid by the action of said current to activate
said liquid, and regulating the degree of activa
tion of said liquid by selectively ‘adjusting the
rate of ?ow of said liquid relative to said cur
rent, whereby "relatively determined amounts of
metal are transferred into said liquid to cause
the rapid aging thereof, the voltage of said cur
rent being of a magnitude of the order of about
2 volts.
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