An Improvement in the Preparation of Carbonic Acid Gas for Aeration of Gaseous or Mineral Waters for Drinking Purposes.
Year: 1893

page_text: Date of Application, 8th Sept., 1893
Complete Specification Left, 29th Jan., 1894-Accepted, 3rd Mar., 1894
PROVISIONAL SPECIFICATION.
An Improvement in the Preparation of Carbonic Acid Gas for Aeration
of Gaseous or Mineral Waters for Drinking Purposes.
I, GEORGE JAMES ANDREWS 113 Dawes Road Fulham London, S. W. Chemist
do hereby declare the nature of this invention to be as follows
―
1st. In producing a perfectly pure aerating gas by mixing concentrated
phosphoric acid " H,PO 337 per cent. of water: specific gravity 1.5 11 with
bicarbonate of soda "NaHCO," proportionately and as follows.
2ndly. Into an ordinary gas generator of 20 gallons capacity I put thirty two
pounds of bicarbonate of soda and nine gallons of water well agitating this mixture.
I then dilute five pints of concentrated phosphoric acid of the strength already
described with twenty eight pints of water and add gradually to the soda solution
by means of an acid box and pipe connected to the generator.
The phospho-carbonic acid gas being thus generated is conducted by a seperate
pipe to a vessel hermetically sealed of the capacity of twenty gallons which pipe
reaches nearly to the bottom of the vessel. Into this vessel I place fifteen gallons
of water and twelve fluid ounces of concentrated phosphoric acid of the strength
already described. The gas from the generator on escaping from the pipe at the
bottom of the vessel passing through this solution is washed from all impurities and
thence passes by another seperate pipe into the gasometer or gas holder.
September 8th 1893.
GEO. JAS. ANDREWS.
COMPLETE SPECIFICATION.
An Improvement in the Preparation of Carbonic Acid Gas for Aeration
of Gaseous or Mineral Waters for Drinking Purposes.
I GEORGE JAMES ANDREWS of 113 Dawes Road Fulham S.W. Chemist, 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:-
1st. In producing a perfectly pure aerating gas, by mixing concentrated
phosphoric acid "H.PO" 33-7
bicarbonate of soda, "NaHCO for cent of water: specific gravity 1.5 11, with
," proportionally and as follows.
2ndly. Into an ordinary gas generator of 20 gallons capacity, I put thirtytwo pounds
of bicarbonate of soda and nine gallons of water, well agitating this mixture.
I then dilute five pints of concentrated phosphoric acid, of the strength already
described, with twenty eight pints of water, and add gradually to the soda solution,
by means of an acid box and pipe, connected to the generator.
The phospho-carbonic acid gas being thus generated, is conducted by a seperate
pipe to a vessel hermetically sealed, of the capacity of twenty gallons, which pipe
reaches nearly to the bottom of the vessel. Into this vessel, I place fifteen gallons
of water, and twelve fluid ounces of concentrated phosphoric acid, of the strength
already described. The gas from the generator, on escaping from the pipe at the
bottom of the vessel, passing through this solution is washed from all impurities,
and thence passes by another seperate pipe, into the gasometer or gas holder.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is :
1st. That by the use of a totally different acid, and a purer alkali, than those
now universally used, for producing carbonic acid gas, for aeration of mineral
waters, I produce a purer and more exhilarating gas.
2ndly. That by the use of concentrated phosphoric acid, in combination with
bicarbonate of soda, I produce a gas, which shall be known as phospho-carbonic
acid gas.
3rdly. That the said phospho-carbonic acid gas, having been invented, for the
purpose of aerating the new mineral water, "Cebro "is also the purest, for aerating
all other mineral waters.
GEORGE JAMES ANDREWS.