Improvements in or relating to Baths (Bathing Fluids) for Medicinal or other Purposes.
Year: 1888

page_text: Date of Application, 14th Nov., 1888
Complete Specification Left, 14th Aug., 1889-Accepted, 14th Sept., 1889
PROVISIONAL SPECIFICATION.
Improvements in or relating to Baths (Bathing Fluids) for Medicinal
or other Purposes.
We KARL GROSSMANN of 70 Rodney Street, in the City of Liverpool, Doctor of
Medicine, and MARTIN PERLS of 62 Basinghall Street, in the City of London, Dealer
in Chemicals and Machinery for the Soap Trade do hereby declare the nature of this
invention to be as follows:-
This invention has for its object the imitation of natural mineral baths containing
large quantities of carbonic acid.
"
If we attempt to saturate ordinary water with carbonic acid at atmospheric pressure,
comparatively little carbonic acid remains, especially if the water be warmed. We
have, however, found that if salt water be used, or certain salts be dissolved in
the water, it becomes susceptible of carrying a much larger quantity of carbonic acid
than before saturation.
We have found quite a large number of salts are applicable for this purpose, but
the cheapest and therefore for most purposes the best are salts of iron, sea salt,
ordinary chloride of sodium and Stassfurt salts.
The salts are first dissolved in the water and then the carbonic acid pumped in, in
a fine spray or the carbonic acid is dissolved in water under pressure and that water
run into the bath and mixed with it, or the water of the bath itself is impregnated
with the carbonic acid while under pressure.
Dated this 13th day of November 1888.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in or relating to Baths (Bathing Fluids) for Medicinal
or other Purposes.
We, KARL GROSSMANN of 70 Rodney Street, in the City of Liverpool, Doctor of
Medicine, and MARTIN PERLS of 62 Basinghall Street, in the City of London, Dealer
in Chemicals and Machinery for the Soap Trade 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 :-
:-
The well known beneficial influence which the natural springs such as Kissingen,
Marienbad, Nauheim, St. Moritz, Rehme-Oynhausen, etcetera, have on a number of
different complaints, has been traced back principally, if not solely to the action of
the free and half free CO, which they contain. The idea therefore occurred to us to
imitate these natural springs and to graduate their action (on the human body) by
regulating the amount of the CO₂ contained therein or by increasing it up to a strength
far exceeding that in nature.
5
There is no difficulty in reproducing the solid constituents of any known spring ;
it has however been thought impossible up to the present to charge the waters with an
amount of CO2, sufficient for bathing purposes, a probleui which becomes all the
more difficult when the waters have to be warmed.
Our invention overcomes this difficulty and enables us to produce solutions for
bathing purposes impregnated with carbonic acid gas to various desired degrees.
If we attempt to saturate ordinary water with CO₂, comparatively little CO, gas is
retained on exposure to the atmosphere especially if the water be warmed.
We have,
however, found that if natural sea water or salt water be used or certain salts be dis
solved in water, the latter becomes susceptible of carrying and retaining (sufficiently
long time for bathing purposes) a much larger quantity of CO, gas than before.

page_text: We have found a certain number of salts applicable for this purpose, the cheapest
and best being sea salt, ordinary Na Cl and soluble Stassfurt Salts, especially when
combined with iron.
In order to impregnate the waters with C, to a much higher degree than is met
with in any natural spring; we use sea water, natural brines or the above mentioned
salts in solution of 2 per cent. and upwards (preferably about 3 per cent. and not to
exceed & per cent.). Hereby the CO, is dissolved in a free and half free state and
is given up more or less slowly according to the strength of the brine. An addition
of hydrate of iron or iron salts, for example rust, natural Chalybeate water or sulphate
of iron, etcetera, increases this
(binding)
(retaining) power, and is besides of additional value
for certain medicinal purposes. For practical reasons we do not exceed one per
mille (188) of iron.
The impregnation with the CO, is done as follows
The gas generated in any suitable way is introduced into a closed receptacle con-
taining the above solutions and allowed to be absorbed under pressure without or with
agitation (accelerated by the latter). The absorption having taken place sufficiently,
the over pressure is taken away by letting off the superfluous CO, while still in the
closed chamber. (Unless this is done, the gas would drive the solution with such a
force into the bath as to deprive it, by pure mechanical agitation, of too great an
amount of CO₂).
The solution, when fully saturated with carbonic acid (CO2), is then drawn off into
the bath, either as it is, or warmed previous to its entering the bath to a suitable
temperature for bathing purposes. This warming ought to be done by agitating the
solution as little as possible, and may be effected either immediately before the solution
enters the bath (by means of a suitable coil or other warming apparatus); or the
solution may he let into the bath cold and only warmed when therein, (either by
adding hot water, or by an arrangement for heating the walls of the bath itself).
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is :-
1st. The combination of saline water (such as described) and carbonic acid for the
purposes described whereby a bath is obtained decidedly richer in, and capable of
retaining much longer, carbonic acid than is practicable without the use of salts in the
water.
2nd. The improvement in medicinal baths which consists in forming the liquid of
a saline solution, such as described, and adding the carbonic acid to the solution under
pressure, then allowing the pressure to fall to about that of the atmosphere while in
the closed chamber, and then admitting the solution to the bath, tub, or other bathing
place, with as little disturbance as practicable whereby a stronger solution of carbonic
acid is obtained than would be possible if violent agitation either by pouring the
water into the bath or allowing the carbonic acid to fly off from the water under a
suddenly reduced pressure were allowed, and the surplus carbonic acid is saved.
WM. P. THOMPSON & Co.,..
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.