Roots or Fruits.
Year: 1888

page_text: Roots or Fruits.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Fellow of the Institute of Patent Agents do hereby declare the nature
of this invention to be as follows :-
This invention relates to an improved process for drying organic bodies, such as
potatoes and the like which, on account of their nature, require to be boiled or otherwise
converted by the action of heat and, after cooling, are reduced to small fragments or
otherwise treated.
According to this invention agricultural produce, such as turnips, potatoes,
kohlrabi &c., after being decorticated, are converted by boiling or steaming to the
cooked condition, and after separating them as rapidly as possible from the water,
they are subjected while still hot to the action of a vacuum, without the addition of
external heat. By this means the following advantages are attained :--
1. The substances are very rapidly cooled at the same time that they are dried,
being effected much more quickly than was possible heretofore.
this
2. The substances retain their original form, as they are boiled, dried, and cooled in
one and the same vessel.
3. During this rapid cooling the admission of air is prevented, whereby is attained:.
4. That neither spores nor fungi can come in contact with the substances, so that
they are prevented from turning acid or becoming mouldy, which advantage has not
hitherto been attained with any other process.
5. In particular, by the application of this process to potatoes, all reduction of these
to fragments, which are so very detrimental to the further treatment thereof, is.
prevented.
The above described process is, by way of example, carried out in the following..
manner with potatoes :-
:-
The pealed potatoes are placed upon a sieve or perforated surface that is suitably
introduced into a vessel that can be closed-hermetically.

page_text: By boiling or steaming the potatoes are converted into the cooked condition. When
they are cooked, the water is removed from the vessel by a cock or valve underneath
the sieve, and the vessel is then made to communicate by a pipe with a powerful air
pump or exhauster so as to exhaust the vessel without additional heating, until
the potatoes are cooled down to about 18° Centigrade, whereupon they may be
removed for further treatment.
Turnips, kohlrabi &c are treated in a similar manner.
Process for Drying Organic Substances such as Potatoes and other
Roots or Fruits.
I, OLIVER IMRAY, of No. 28 Southampton Buildings, Chancery Lane, in the County
of Middlesex, Fellow of the Institute of Patent Agents, 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 :-
This invention relates to an improved process for drying organic bodies, such as
potatoes and the like, which, on account of their nature, require to be boiled or
otherwise converted by the action of heat and after cooling are reduced to small
fragments or otherwise treated.
According to this invention agricultural produce, such as turnips potatoes,
kohlrabi &c. after being decorticated, are converted by boiling or steaming to the
cooked condition, and after separating them as rapidly as possible from the water,
they are immediately subjected, while still hot, to the action of a vacuum, without
the addition of external heat. By this means the following advantages are attained :-
1. The substances are very rapidly cooled at the same time that they are dried, this
being effected much more quickly than was possible heretofore.
2. The substances retain their original form, as they are boiled, dried, and cooled
in one and the same vessel.
3. During this rapid cooling the admission of air is prevented, whereby is.
attained :
4. That neither spores nor fungi can come in contact with the substances, so that
they are prevented from turning acid or becoming mouldy, which advantage has not
hitherto been attained with any other process.