Improvements in the Production and Application of the Solution of Calcium Phosphate in Carbonic Acid Water for use as a Beverage or in Medicine or Pharmacy.
Year: 1890

page_text: Date of Application, 31st May, 1890
Complete Specification Left, 26th Feb., 1891-Accepted, 18th Apr., 1891
PROVISIONAL SPECIFICATION.
Improvements in the Production and Application of the Solution of
Calcium Phosphate in Carbonic Acid Water for use as a Beverage
or in Medicine or Pharmacy.
We, THOMAS HOWELL WILLIAMS, of 10, Ascham Street, Kentish Town, N.W.,
Manufacturing Chemist, and WILLIAM HENRY SYMONS, of 130, Fellows Road,
South Hampstead, N.W., Analyst, do hereby declare the nature of this invention
to be as follows:
Calcium phosphate either freshly precipitated or dried, alone or mixed with
other chemicals or drugs is dissolved in water by the aid of carbonic acid gas,
either at normal pressure or under pressure artificially increased, in such quantities
as may be required for its use, either as a beverage or as medicine.
May 31st 1890.
THOMAS HOWELL WILLIAMS.
WILLIAM HENRY SYMONS.
COMPLETE SPECIFICATION.
Improvements in the Production and Application of the Solution of
Calcium Phosphate in Carbonic Acid Water for use as a Beverage
or in Medicine or Pharmacy.
We, THOMAS HOWELL WILLIAMS, of 10, Ascham Street, Kentish Town, in
the County of Middlesex, Manufacturing Chemist, and WILLIAM HENRY
SYMONS, of 130, Fellows Road, South Hampstead, in the same County, Analyst,
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 invention consists in the production and application of the solution of
calcium phosphate in carbonic acid water for use as a beverage or in medicine or
pharmacy and the following processes may be employed in the preparation of the
game.
The calcium phosphate to be dissolved may be either that made from bones and
known to chemists as normal calcium phosphate which by preference should be
recently prepared and undried or it may be made by precipitation with sodium
hydrophosphate.
The calcium phosphate is preferably made according to the following process
which is one well known.
Calcium chloride is mixed with pure water in such proportions that ten
gallons of the solution contains eleven pounds of anhydrous calcium chloride the
formula being CaCl₂. A second solution is made by mixing crystallized sodium
phosphate or to speak more correctly hydrophosphate with distilled water in such
proportions that in every ten gallons of the solution there are contained nine
pounds of the crystallized sodium phosphate the formula of this salt being
Na, HPO 12H,O. Ten gallons of the solution of calcium chloride is mixed with
forty gallons of the solution of the sodium phosphate and distilled water added so
as to make up the mixed solution of the two to two hundred gallons. The last
mentioned mixture should be made in a suitable vessel so that precipitation
may take place and the clear supernatant liquor be drawn off without disturbing
the precipitated matter. Precipitation having taken place and the clear liquor

page_text: having been drawn off the vessel is refilled with distilled water and precipitation
again allowed to take place and the clear supernatant liquor again drawn off.
The process is repeated again and again until the supernatant liquor ceases to
contain chlorides in any appreciable quantity.
In practice it is found that if the process be repeated six times the desired
result will be obtained. This precipitate is calcium hydrophosphate mixed with
a variable amount of normal calcium phosphate. Instead of washing the pre-
cipitate by subsidence it may be thrown into a linen strainer or centrifugal
machine to expedite filtration and render less water necessary. In order to
produce the solution in carbonic acid water this precipitate after being thoroughly
washed by one or. other of the methods above described is mixed with about
200 gallons of distilled water and kept in a state of suspension by being stirred
or agitated and the mixture is pumped or forced into the cylinder of a soda
water machine or other suitable vessel and charged with carbonic acid gas
under a pressure of about one hundred or one hundred and twenty pounds to
the square inch preferably about 20 gallons at a time in a cylinder or vessel
of about 40 gallons capacity. The mixture is allowed to remain in this machine
about an hour or longer and kept constantly agitated and then blown or passed
into a suitable covered tank and the excess of carbonic acid gas not taken up
by the mixture allowed to escape.
The tank which we prefer for the above purpose is one capable of holding the
whole 200 gallons or other quantity originally prepared of the solution and
having 3 or more taps in its sides through which the excess of carbonic acid gas
above referred to can be allowed to escape. A second 20 gallons of the solution
is then treated in the same manner and so on until the whole of the 200 gallons or
other quantity originally prepared has been passed into the covered tank. After
the excess of carbonic acid gas has escaped from the covered tank the taps are
closed and the tank put into communication by means of a pipe leading into
the top of it with a gasholder filled with carbonic acid gas at a pressure of not
more than about 2 lbs. to the square inch so that as the liquid is drawn off its
place may be taken by carbonic acid gas. The precipitate is then allowed to
settle down which takes place in about 24 hours and the clear liquid can there-
after be drawn off for use as a beverage or in medicine or pharmacy from time
to time as required. This liquid may also be bottled either as drawn off or be
charged with an excess of carbonic acid gas as in the case of ordinary aerated
beverages and in like manner. Syrups or other suitable flavouring compounds may
be added in the manner used by mineral water manufacturers and others for
flavouring aerated and other beverages.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
The production and application of the solution of calcium phosphate in carbonic
acid water substantially by the methods above described for use as a beverage or in
medicine or pharmacy.
CHAS. R. TAYLOR,
63 & 64, New Broad Street, E.C., Agent for the Applicants.