Waters Containing Carbonic Acid.
Year: 1887

page_text: Date of Application, 16th May, 1887.
Specification Accepted, 8th June, 1887.
Waters Containing Carbonic Acid.
I, WILHELM LIPPERT of Eberswalde, in the Empire of Germany, Manufacturer,
do hereby declare the nature of this invention, and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
For the purpose of saturating medicinal bathing waters with carbonic acid and thus
producing baths of a composition that does not occur in nature, but is of great
importance for many diseases, I produce first carbonic acid either by combustion of
coke, or by burning limestone in suitable furnaces, or by generating it in a special
apparatus.
Referring to the annexed drawing A is the apparatus, for generating the carbonic
acid, consisting of a cylindrical vessel a closed above and below, the upper cover of
which carries on the inner side a receptacle a¹ and on the outer side the outlet
pipes a a' for the gas generated in a. The receptacle a¹ has below an opening a³
closed by a valve a mounted on the rod a' which passes through the cover of the
cylinder and extends into a chamber a. The upper extremity of the valve-rod a' is
connected with the screw spindle a', which can be raised and lowered by turning the
nut as provided with a hand-wheel, whereby the valve a' is opened and closed.
In the lower part of the vessel a is situated a mixing wheel a' which is rotated in
any suitable manner. To produce the carbonic acid, the receptacle a is filled to a
certain height with diluted whitening, magnesite or marble, the receptacle a¹ is filled
with acid and the valve at is so far opened, that only so much acid can enter into a¹,
as is required for the continuous generation of the carbonic acid. The mixing wheel a
brings the acid into intimate contact with the materials containing carbonic acid and
thus favours the generation of the gas. The residues remaining in a are removed
through the lower valve a". Subsequently the generated carbonic acid is sucked by
a pump B from the generator A through a washing apparatus C and pressed into a

page_text: saturating apparatus D consisting of a horizontal cylinder containing one or more
stirrers.
This saturator D contains water previously admixed with suitable chemicals and
adapted to be warmed according to requirement by means of steam introduced through
the tube d. The carbonic acid enters through the valve d¹ into the saturator and is
intimately mixed by the action of the stirrers with the water, which is thus impregnated
in a high degree with carbonic acid.
The bathing water so produced containing carbonic acid is conducted through the
chamber and a suitable tube direct into the bath.
If the bathing water is to be mixed with chemicals which could not be combined
with the carbonic acid, when the water is impregnated in the saturator, such chemicals
are mixed with water contained in a special reservoir and this water is conducted
through a special tube to the bathing tub. The mixture of this water with the bathing
water flowing out of the saturator D. is in this case effected while it is being let into
the bathing tub.
The reservoir is preferably so arranged, that the water contained in it can be
brought to a high temperature, so that by mixing this water with the water containing
carbonic acid from D, the desired temperature can be produced.
The tube g serves to let water into C and A, while the tube g¹ serves to introduce
acid, and the tube g² to return the carbonic acid not employed in the saturator, to the
generating apparatus A.
Having now particularly described and ascertained the nature of this invention and
in what manner the same is to be performed, I declare that what I claim is:
The process for producing medicinal bathing waters containing carbonic acid, by
heating the water contained in the saturator D containing chemicals, by means of
steam, and subsequently impregnating this water with carbonic acid, generated in an
apparatus consisting of the cylinder a, the acid-receptacle a¹ and valve a' a³ a7 and
conducted into the saturator through a pump B, all substantially as illustrated and set
forth.
Did this 10th day of May 1007