A Method of and Apparatus for Removing Bad Odours from Leaves, Fruits, Barks, Various Sorts of Wood or other Substances Con- taining Volatile Elements.
Year: 1889

page_text: Date of Application, 18th Oct., 1889-Accepted, 7th Dec., 1889
COMPLETE SPECIFICATION.
A Method of and Apparatus for Removing Bad Odours from Leaves,
Fruits, Barks, Various Sorts of Wood or other Substances Con-
taining Volatile Elements.
A communication from abroad by GYSBERT DIRK NELLENSTEYN, of Amsterdam, in
the Kingdom of Holland, Chemist.
I, WILLIAM PHILLIPS THOMPSON F.C.S., M.I.M.E, of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both in
the County of Lancaster and 323, High Holborn, in the County of Middlesex, Civil
Engineer, 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 object of this invention is a method of and apparatus for removing bad odours
from leaves, fruits, barks or the like containing volatile elements and in this manner
improving the substances containing these bad odours.
'
The invention consists of a method of extraction by means of a vacuum or of a
vacuum with the use of an absorbing material before the extraction, in order to
facilitate the latter and render the products purer; also in the combination of apparatus
herein described.
Referring to the drawing :-
-
A reservoir A of sufficient strength to resist the external pressure is constructed
of iron or of any other suitable material; and is capable of being opened or
hermetically closed. This reservoir A communicates by a tube a with a second
reservoir B; the tube a is provided with a tap or valve & so that the communication
between the two reservoirs A and B can be opened or closed.
The second reservoir B is also arranged so as to be either opened or hermetically
closed. It is placed in a refrigerator C which can contain a mixture either of
sulphate of soda (Na SO') and hydrochloric acid (H Cl) or of ice and chloride of
sodium (Na Cl) or of any other suitable freezing mixture. The reservoir B con-
municates by a tube d with an air pump E or with any other apparatus capable of
producing a vacuum.
The following is the mode of working :-
After having been filled with leaves, fruits or other substances containing bad odours,
the reservoir A is hermetically closed, the reservoir B being also closed; by means
of the air pump E the air contained in the reservoirs A and B is drawn out through
the pipe d. The tap b may be opened at first or can be opened little by little to cause
the reservoir A to communicate with the vacuum in reservoir B. In this manner an
almost perfect vacuum is formed in the receptacles A and B, by means of which the
volatile elements which cause the bad smells in the leaves, barks, or other substances
with which the reservoir A is filled are drawn off and afterwards removed through the
air pump E.
In the case of substances the volatile elements of which are very difficult to extract, the
extraction is improved and the products rendered more inodorous by previously treat-
ing them with an absorbing or dissolving substance such as ether, petroleum, or any
other suitable one.
By means of the cold produced, in the refrigerator C surrounding the reservoir B,
by one of the above named freezing mixtures, the volatile elements are precipitated
in the reservoir B from whence they can be afterwards removed in order to be
utilized.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, 1 declare that what I claim is :-
1. The combination of a reservoir A for holding the leaves, fruits, etcetera, with a
second receiver, B, placed in a refrigerator, C, serving to collect the volatile elements
when it is desired to recover them and of an air pump E or its equivalent, substantially
as and for the purposes set forth.
2. The extraction of the volatile elements causing bad odours in leaves, fruits, barks
and other substances containing these elements in order to render these substances
free from these bad odours by means of vacuum or vacuum combined with absorbents
and which elements can be afterwards condensed, substantially as described.
Dated this 17th day of October 1889.
WM. P. THOMPSON & Co.,
Agents for the Applicant.