Improvements in Apparatus used in the Purification and Collection of Carbonic Acid Gas prior to its being used for Aerating (Soda) Water or other Liquors.
Year: 1889

page_text: Date of Application, 19th July, 1889
Complete Specification Left, 18th Apr., 1890-Accepted, 24th May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Apparatus used in the Purification and Collection
of Carbonic Acid Gas prior to its being used for Aerating (Soda)
Water or other Liquors.
I, JAMES CHILDS, of Cedar Lea, Clapham Common, in the County of Surrey,
Gentleman, do hereby declare the nature of this invention to be as follows:-
The ordinary way of purifying carbonic acid gas is to cause the gas to bubblé up
between lumps of chalk immersed in water and to collect the purified gas in a gas
holder formed like an ordinary gasometer.
Ordinarily the gas holder is formed of a tin lined copper cylinder closed at the top
and immersed in a tank containing water-the copper cylinder is suspended by
cords which are led over pullies and have counterbalance weights attached to
their ends.
Gas holders of this kind are cumbersome and have other disadvantages one being
that the water gets foul and has to be frequently renewed thereby involving loss of
all carbonic acid that has been absorbed in such waste water.
The object of my invention is to permit of bags of flexible material being used
for collecting and holding purified carbonic acid gas before it is forced by pumps
into aerating apparatus.
The bag I use is formed from a fabric made up by preference of three layers of
rubber and two of canvas.
If such a bag were used to hold the gas after it had been passed through a purifier
such as above mentioned wherein the gas has to bubblo up through water the bag
would rapidly be destroyed but I have found that if instead of using a wet purifying
process a dry purifying process is used such as causing the gas to be brought into
contact with lumps of crystaline soda then the dry purified gas has no action on the
bag receiver and the bag will last for a long time. Preferably 1 form the purifier
of a case having a number of perforated shelves across its interior on which dry
crystaline soda is placed and cause a stream of gas to be passed through the casing.
Any liquid produced by the impurities in the gas acting on the surfaces of the lumps
of soda runs down to the bottom of the casing and does not impede the action of
the apparatus.
The bag may be suspended and provided with a tap at the top by which any air
may be allowed to escape from the bag whenever necessary.
1000
COMPLETE SPECIFICATION.
Improvements in Apparatus used in the Purification and Collection
5 of Carbonic Acid Gas prior to its being used for Aerating (Soda)
Water or other Liquors.
I, JAMES CHILDS, of Cedar Lea, Clapham Common, in the County of Surrey,
Gentleman, 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
O following statement:-
The ordinary way of purifying carbonic acid gas is to cause the gas to bubble up

page_text: between lumps of chalk immersed in water and to collect the purified gas in a gas
holder formed like an ordinary gasometer.
Ordinarily the gas holder. is formed of a tin lined copper cylinder closed at the
top and immersed in a tank containing water-the copper cylinder is suspended by
cords which are led over pullies and have counterbalance weights attached to
their ends.
Gas holders of this kind are cumbersome and have other disadvantages one being
that the water gets foul and has to be frequently renewed thereby involving loss of all
carbonic acid that has been absorbed in such wasto water."
The object of my invention is to permit of bags of flexible material being used for
collecting and holding purified carbonic acid gas before it is forced by pumps into
aerating apparatus.
The bag I use is formed from a fabric made up by preference of three layers of
rubber and two of canvas.
If such a bag were used to hold the gas after it had been passed through a purifier
- such as above mentioned wherein the gas has to bubble up through water the bag
would rapidly be destroyed but I have found that if instead of using a wet purifying
process a dry purifying process is used such as causing the gas to be brought into
contact with lumps of crystalino soda then the dry purified gas has no action on the
bag receiver and the bag will last for a long time. Preferably I form the purifier
of a case having a number of perforated shelves across its interior on which dry
crystaline soda is placed and cause a stream of gas to be passed through the casing.
Any liquid produced by the impurities in the gas acting on the surfaces of the lumps
of soda runs down to the bottom of the casing and does not impede the action of the
apparatus.
The bag may be suspended and provided with a tap at the top by which any air may
. be allowed to escape from the bag whenever necessary.
Figure 1 of the drawings annexed is an end view and Figure 2 a front view of a
purifier constructed in the manner I prefer for carrying out my invention.
Figure 3 shows on a smaller scale the purifier and the india rubber gas bag used
with it.
A is the purifier which preferably I form of slabs of slate put together in
similar
manner to that in which slate water tanks are now made but closed at the top.
Across the interior a perforated shelf or shelves is fixed as above stated two shelves B
are shewn in the drawing. At the front are two removeable doors C also of slate
one in front of each shelf to permit of the dry crystaline soda being placed upon the
shelves. D is an outlet to the pumps used for forcing the gas into the apparatus in
which it is to be used. E is an outlet to the storage bag and G is a return gas
pipe from the pumps. The storage bag is preferably suspended as shown at
Figure 3 by a cord which passes over pullies carried by a wooden frame H and
has a weight I attached to its end to partially counterbalance the weight of
the bag.
J is a cock for drawing off liquid from the bottom of the purifier.
When gas enters the purifier from the generator it circulates within it and is
so frequently brought into contact with the purifying material before it passes off
to the storage bag. In this way the gas becomes thoroughly dried and purified
before it enters the bag whilst the soda becomes gradually liquified and drains.
away to the bottom of the purifier from which it can be drawn off by the draw off
cock J.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. In apparatus used in the purification and collection of carbonic acid
combination of a dry purifier comnnond of a chamb
gas tbe

page_text: like material and a flexible storage bag for storing the gas after it has passed from
the purifier.
2. The construction of apparatus for purifying and storing carbonic acid gas
substantially in the manner herein before described.
Dated thie 15th day of April 1890
JAMES CHILDS.