A Phosphated Preparation of Common Salt.
Year: 1890

page_text: Date of Application, 18th July, 1890
Complete Specification Left, 16th Apr., 1891-Accepted, 30th May, 1891
PROVISIONAL SPECIFICATION.
A Phosphated Preparation of Common Salt.
I GEORGE DUNCAN BOWIE 20 Trinity Square Guernsey Chemist & Druggist
do hereby declare the nature of this invention to be as follows:-
-
Common salt (chloride of sodium NaCl) suitably combined with (or mixed with)
definite proportions of phosphates, phosphites, hypophosphites, hypophosphates,
thiophosphates thiophosphites or other phosphatic matter for domestic and general
purposes.
COMPLETE SPECIFICATION.
A Phosphated Preparation of Common Salt.
I GEORGE DUNCAN BOWIE of 20 Trinity Square Guernsey Chemist and
Druggist 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:―
My invention relates to an improved table salt for domestic and general purposes
which shall contain phosphates in an exactly neutral condition as they exist in
cereals. To this end I take definitely ascertained quantities of phosphoric acid, or
hypophosphoric acid or pyrophosphoric acid, or fluophosphoric acid or metaphos-
phoric acid, their subacids or any acid of phosphorus of a suitable nature, but
preferably use the diluted phosphoric acid of the British Pharmacopeia and having
partially neutralized the acid by the addition of ascertained quantities of phosphate
of lime and phosphate of potash added in successive small quantities, I spread on
an extended surface weighed quantities of alkaline phosphate of soda either in
the dried state or the natural crystal simply ground to a fine powder apply the
above named acid solution by means of a spray producer or other contrivance which
shall ensure the whole being thoroughly and uniformly moistened, and exact
neutrality obtained the precise amount being regulated by the indication given
when a strip of litmus paper is dipped into a solution effected for testing purposes.
After the spontaneous evaporation of the excess of water I take weighed
quantities of this preliminary phosphated compound, and add it to proper propor-
tions (defined below) of fine powdered chloride of sodium (common salt prepared
for domestic use) mixing the whole by such suitable mechanical contrivances as
shall insure, in addition to thoroughly mixing, the resulting product shall be made
to pass through the meshes of a sieve having not less than 30 holes per inch run,
the fine division securing instant solution when the salt touches the tongue,
increasing its apparent strength.
The proportions in the preliminary phosphated compound which I prefer to
attain are approximately as follows,
100 untereium whocubate

page_text: For the purpose of bread making to restore to some extent the phosphatic con-
stituents of the wheat lost in bolting, six parts of the compound may be used to
94 parts of chloride of sodium (common salt).
A little cochineal or other inert colouring matter may be added to give character
to the finished article.
The chemicals used are those answering all the tests of the British
Pharmacopeia.
Having now particularly ascertained and described the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is,
The compound of the phosphate of lime, phosphate of potash, and phosphate of
soda neutralized by the addition of an acid of phosphorous, and afterwards mixed
with chloride of sodium (common salt), substantially as described.
Dated this Sixteenth day of April 1891.
GEORGE DUNCAN BOWIE.
By his Agents,
Horn & Son.
GEORGE DUNCAN BOWIE.
By his Agents,
Horn & Son.