Year: 1888

page_text: 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 the invention is to abstract the perfume from flowers, fruits and other
substances in a perfectly pure condition.
The invention consists in the manner of preparation and in the arrangement of parts
as will be fully described hereinafter, and then pointed out in the claims.
Reference to be had to the accompanying drawing forming a part of this specifica-
tion, in which :-
This
A is a reservoir of sufficient strength to resist external pressure; made of iron or
any other suitable material, which can be opened, and hermetically closed.
reservoir is connected with a receiver B by means of a pipe a, which is provided with
a cock or valve b, so that A can be placed in communication with B when desired.
The receiver B is placed in a cooling vessel C, containing a mixture of sulphate of soda
(Na 2 SO 4) with hydrochloric acid (H CI); ice with chloride of sodium, (Na Cl) or
whatever method appears most suitable to provide a low temperature.
The receiver B can also be opened and hermetically closed. It is connected to
a chamber D by a pipe c. This chamber D is provided with several layers of
vaseline, suet, or any other substance fit to absorb aromatic parts placed on the
perforated or other shelves shown.
The chamber D is connected by a pipe d'to an air pump E or any other
arrangement in order to produce a vacuum.

page_text: The operation is as follows:-
The reservoir A' is filled with flowers or other substances containing ethereal
oils or aromatic matters, and then it is closed hermetically.
Now the air is
pumped out from the reservoir A, the receiver B, and the chamber D, through
pipe d.
The cock or valve b may be opened immediately or gradually in order to com-
municate the vacuum in B and D to A.
By the influence of the vacuum and the low temperature in the receiver B,.
the volatile oils are therein precipitated either in liquid or in solid state to be
The air pumped out by the air
afterwards removed from the said receiver B.
pump E must pass through the chamber D over or through the vaseline, suet, or
other substance suitable for the purpose, and thereby it delivers any volatile
matters which might not have been precipitated in the receiver B.
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 mo
by my foreign correspondent, I declare that what I claim is :-
1. The combination of a reservoir for holding the flowers, connected with a
a cooling vessel, a chamber
receiver for the aromatic products, and placed in
provided with layers of vaseline, suet, or any other suitable substance, and an
air pump or any other arrangement to produce a vacuum, substantially as shown and
described.
2. The extraction of ethereal oils or aromatic substances from flowers, fruits
and other bodies containing such substances, in a pure condition, whether in
liquid or in solid state by vacuum and low temperature, and a chamber provided
with layers of vaseline, suet, or any other substance suitable for the purpose
substantially as described.
1000