An Improvement in the Manufacture of Invert Sugars.
Year: 1890

page_text: Date of Application, 27th Dec., 1890
Complete Specification Left, 17th Sept., 1891-Accepted, 17th Oct.,, 1891
PROVISIONAL SPECIFICATION.
An Improvement in the Manufacture of Invert Sugars.
I FREDERIC WILLIAM TOMPSON of Southbank, Stapenhill Road, Burton on
Trent in the County of Stafford, Analytical Chemist, do hereby declare the nature
of this invention to be as follows:-
In my Specification No. 8686 of 1884 I have described a process for obtaining
invert sugar by digesting a solution of cane sugar with brewer's yeast at a
temperature of about 133° F. The invert sugar thus obtained is suitable only for
brewing operations, for which complete clarification of the solution is unnecessary.
My present invention relates to means of completely clarifying the solution
of invert sugar obtained as above described, and thereby rendering the sugar
available for other purposes, and suitable for storage and transport, so that it can
be produced and sold by the sugar manufacturer, and that it can be purified like
other sugars by charcoal filtration. For this purpose, I add to the solution of
invert sugar, precipitated sulphate of lime which is usually produced by neutralizing
with whiting the sulphuric acid used in manufacturing glucose. Or I may cause
sulphate of lime to be precipitated in the solution itself. The mixture of solution
and sulphate of lime is then filtered, by which process the yeast is separated from
the liquor along with the sulphate of lime. The solution can then be purified by
charcoal and concentrated in the usual way.
Dated this 27th day of December 1800
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improvement in the Manufacture of Invert Sugars.
I, FREDERIC WILLIAM TOMPSON of Southbank, Stapenhill Road, Burton on
Trent, in the County of Stafford, Analytical 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 :-
In my Specification No. 8686 of 1884 I have described a process for obtaining
invert sugar by digesting a solution of cane sugar with brewer's yeast at a
temperature of about 133° F. The invert sugar thus obtained is suitable only for
brewing operations, for which complete clarification of the solution is unnecessary.
My present invention relates to means of completely clarifying the solution
of invert sugar obtained as above described, and thereby rendering the sugar
available for other purposes, and suitable for storage and transport, so that it can
be produced and sold by the sugar manufacturer, and that it can be purified like
other sugars by charcoal filtration. For this purpose, I add to the solution of
invert sugar, precipitated sulphate of lime which is usually produced by neutralizing
with whiting the sulphuric acid used in manufacturing glucose. The residue of
the glucose manufacture, besides the sulphate of lime, contains also insoluble
portions of the cereals used. I find it unnecessary to separate these ingredients
from the sulphate of lime, as the whole residue operates in effecting the desired
purification. Or, I may cause sulphate of lime to be precipitated in the solution
itself. The mixture of solution and sulphate of lime is then filtered, by which
process the yeast is separated from the liquor along with the sulphate of lime.
The solution can then be purified by charcoal and concentrated in the usual way.
וניסו

page_text: 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 :-
The herein described process for purifying invert sugar solution obtained by
treatment of cane sugar with yeast, by admixture of precipitated sulphate of lime
therewith and filtration.
Dated this 17th dow of Santambor 1801
ABEL & IMRAY,
Agents for the Applicant.