IMPROVEMENTS IN THE PRESERVATION OF VEGETABLE SUBSTANCES
Year: 1855

page_text: LETTERS PATENT to Francois Joseph Anger; of No. 16, Stamford Street,
Blackfriars Road, in the County of Surrey, Merchant, for the Invention
PROVISIONAL SPECIFICATION left by the said Francois Joseph Anger
at the Office of the Commissioners of Patents, with his Petition, on the
29th March 1855.
I, FRANCOIS JOSEPH ANGER, of Number 16, Stamford Street, Blackfriars
Road, in the County of Surrey, Merchant, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN THE PRESERVATION OF VEGETABLE
SUBSTANCES" to be as follows:-
My said Invention consists in the process for preserving and keeping fit
for use during any number of years potatoes and other vegetable substances.
By means of the process, the nature of the farinaceous matter contained in
the vegetables operated on is changed or kept in suspense, which prevents
decay or decomposition taking place.
The agent I employ for the purpose of my, said Invention is an extract
from 'fermented grain called diastase; which extract I mix with water" to form
a solution.
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Having made the said solution; I warm it to a degree sufficient for decom-

page_text: posing the farinaceous matter of the potatoes or other vegetable, which I then
place in the heated solution, allowing the potatoes or other vegetable to remain
therein until the same are perfectly imbued with the solution and the farina-
ceous parts are decomposed; I then take the said potatoes or other vegetable
from the solution and place them in drying rooms or other heating apparatus
until they are thoroughly dried; thus prepared, the potatoe or other vegetable
is not susceptible to the decomposing influence of the atmosphere. Certain
neutralised acids or chemical salts can be used instead of diastase, and
the employment of them would effect the purpose, but not so well as the
diastase.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Francois Joseph Angêr in the Great Seal Patent Office on
the 29th September 1855.-(Received under Protest.)
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, FRANCOIS
JOSEPH ANGER, of Number 16, Stamford Street, Blackfriars Road, in the
County of Surrey, Merchant, send greeting.
WHEREAS Her present most Excellent Majesty Queen Victoria, by Her
Royal Letters Patent under the Great Seal of the United Kingdom of Great
Britain and Ireland, bearing date at Westminster, the Twenty-ninth day of
March, in the nineteenth year of Her reign, did, for Herself, Her heirs and
successors, give and grant unto me, the said Francois Joseph Anger, my
executors, administrators, and assigns, Her especial license, full power, sole
privilege and authority, that I, the sai: Francois Joseph Anger, my executors,
administrators, and assigns, should at any time agree with, and no others, from
time to time, and at all times during the term of years therein expressed, should
and lawfully might make, use, exercise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, my
Invention for "IMPROVEMENTS IN THE PRESERVATION OF VEGETABLE SUBSTANCES,"
in which said Letters Patent is contained a proviso, that I, the said Francois
Joseph Anger, shall cause a particular description of the nature of my said
Invention, and in what manner the same is to be performed, by an instrument
in writing under my hand and seal, to be enrolled in Her said Majesty's
High Court of Chancery within six calendar months next and immediately
after the date of the said in part recited Letters Patent, as in and by the same,
reference being thereunto had, will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Francois Joseph Anger, do hereby declare that the nature of my said Inven-
tion, and the manner in which the same is to be performed, are fully described
and ascertained in and by the following statement thereof, that is to say:-
My said Invention consists in the process for preserving and keeping fit for
use during any number of years potatoes and other vegetable substances.
By means of this process, the nature of the farinaceous matter contained in
the vegetables operated on is changed or kept in suspense, which prevents
decay or decomposition taking place. The agent I employ for the purpose of .
my said Invention is an extract from fermented grain called diastasis, which
extract I mix with warm water to form a solution, and I then proceed as
follows: I cause the said solution to be warmed or heated to a degree
sufficient for decomposing the farinaceous matter of the potato or other
vegetable, which I then place in the heated solution, allowing the potatoes or
other vegetable to remain therein until the same are perfectly imbued with the
solution and the farinaceous parts are decomposed; I then take the said
potatoes or other vegetable from the solution, and place them in drying rooms
or other heating apparatus until they are thoroughly dried; thus prepared the
potato or other vegetable is not susceptible to the decomposing influence of
the atmosphere. I may mention that certain neutralized acids or chemical
salts can be used instead of diastasis, and the employment of them would
effect the purpose, but not so well as the diastasis.
Having thus set forth the nature and mode of employing my said Inven-
tion, I claim as my Invention, the use or employment of diastasis, or neutral-
ized acids or other chemical salts, in the manner above described, for the
preservation of potatoes and other vegetable substances.
In witness whereof, I, the said Francois Joseph Anger, have hereunto
set my hand and seal, the Twenty-eighth day of September, in the
year of our Lord One thousand eight hundred and fifty-five.