AN IMPROVED METHOD OF AND APPARATUS FOR SEPARATING AQUEOUS FROM OLEAGINOUS SUBSTANCES
Year: 1870

page_text: LETTERS PATENT to Henry Medlock, of Number 22, Tavistock Square;
in the County of Middlesex, Doctor of Philosophy, for the Invention
"AN IMPROVED METHOD OF AND APPARATUS FOR SEPARATING AQUEOUS FROM
OLEAGINOUS SUBSTANCES."
PROVISIONAL SPECIFICATION left by the said Henry Medlock at the
Office of the Commissioners of Patents, with his Petition, on the
28th June 1870.
I, HENRY MEDLOCK, of Number 22, Tavistock Square, in the County
of Middlesex, Doctor of Philosophy, do hereby declare the nature of
the said Invention for "AN IMPROVED METHOD OF AND APPARATUS FOR
SEPARATING AQUEOUS FROM OLEAGINOUS SUBSTANCES," to be as follows:-
The object of this Invention is to afford a simple & effectual means
of separating aqueous from oleaginous substances, especially gravies,
soups, broths, &c., from the fat of the meat from which they are made,
which means may also be used for separating non-miscible substances of
different specific gravities.
.

page_text: The apparatus consists of an upright glass vessel terminating at its
base in a narrow hollow neck which is fitted into a stand of metal, glass,
or other suitable material. The joint between the glass vessel and the
stand is to be packed by a ferule of cork, india-rubber, or other elastic
material. The stand is furnished with a cock or tap of suitable size, by
which the aqueous and oleaginous substances after separation may be
drawn off.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Henry Medlock in the Great Seal Patent Office on
the 22nd December 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
MEDLOCK, of No. 22, Tavistock Square, in the County of Middlesex,
Doctor of Philosophy, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of June, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
fourth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Henry Medlock, Her special licence that
I, the said Henry Medlock, my executors, administrators, and assigns, or
such others as I, the said Henry Medlock, my executors, administrators,
and assigns, should at any time agree with, and no others, from time to
time and at all times thereafter during the term 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, an Invention for "AN IMPROVED METHOD OF AND
APPARATUS FOR SEPARATING AQUEOUS FROM OLEAGINOUS SUBSTANCES," upon
the condition (amongst others) that I, the said Henry Medlock, my
executors or administrators, by an instrument in writing under my, or
their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Henry Medlock, do hereby declare the

page_text: performed, to be particularly described and ascertained in and by the
following statement, reference being had to the accompanying Drawings
and to the letters and figures marked thereon, that is to say :-
The nature and object of the said Invention is to afford a simple and
effectual means of separating aqueous from oleaginous substances,
especially gravics, soups, broths, beef tea, &c., from the fat of the meats
from which the aforesaid articles of food have been made. The principle
of my Invention is based upon the well known relative specific gravities
of fat or other oleaginous substances and water, solutions of the juices of
meats, or other aqueous substances, fat and oleaginous substances being
lighter or of less specific gravity when in contact with aqueous
substances always, as is well known, rises and floats upon the top of such
aqueous substances.
Now by my Invention I have provided simple
apparatus whereby, taking advantage of the above well-known principle,
I am enabled readily and effectually to separate the fatty or oleaginous
from the aqueous portions of gravies, soups, broths, beef tea, &c.
My improved apparatus consists of an upright glass vessel terminating
at its base in a narrow hollow neck which is fitted into a stand of metal,
glass, or other suitable material. The joint between the glass vessel and
the stand is to be packed by a ferule of cork, india-rubber, or other
suitable elastic material. The stand is furnished with a cock or tap of
suitable size by which the aqueous and oleaginous substances after the
fat has risen to the top may be separately drawn off. In some cases I
have found that it is more convenient to dispense with the elastic.
packing and to fix the glass permanently by plaster of Paris or other
cement into a tube of metal or other suitable material, which tube, con-
taining the tap herein-before mentioned, is fitted to the stand and may
be secured there by a bayonet joint or screw.
The mode of using the apparatus is as follows:-When the gravy,
soup, broth, beef tea, &c., is made, it is to be placed in the upper vessel
of the apparatus, the tap being closed; the fat soon rises to the surface,
which may easily be seen through the sides of the glass vessel, the tap
is then to be opened and the gravy, soup, broth, beef tea, &c., allowed to
run out until the fat, which can be easily recognized by its colour,
approaches near to the bottom of the glass vessel, when the tap is to be
again closed. The gravy, soup, broth, beef tea, &c. thus separated is
almost free from any fat or greasy matter. The fat or oleaginous matter

page_text: remaining in the glass vessel may then be drawn off through the tap and
can be used advantageously for various culinary purposes.
This apparatus will also afford a ready and useful instrument in the
laboratory for separating oils from water, and also separating from each
other other non-miscible fluids of different specific gravities.
And in order that my improved apparatus may be fully understood I.
shall now proceed to particularly describe the same by the aid of tho.
several Figures on the Sheet of Drawings hereunto annexed, the same
letters of reference indicating corresponding parts throughout all the
Figures.
Fig. 1 is an elevation, and Figs. 2 and 3 are sections of the apparatus.
A is the upper glass vessel; B is the stand into which the lower part
of the glass vessel is fitted; C is the tap which is fixed in the upper
portion of the stand at the place where the narrow neck of the upper
glass vessel terminates; D is a ferule or ring of cork, india-rubber, or
other suitable elastic material for the purpose of packing or rendering
tight the joint between the glass vessel A and the stand B. In Fig. 3
the cork, india-rubber, or elastic packing is omitted, and instead thereof
the upper glass vessel is permanently fixed by plaster of Paris or other
cement into the upper socket or portion of the stand B, which socket is
slipped into the lower portion of the stand, and may be secured there if
desired by means of a bayonet joint or screw.
This will be readily
understood by a mere inspection of Fig. 3, the bayonet joint being.
shewn in Fig. 1.
Having now fully described the nature of my said Invention and the
mode of performing the same or carrying it into effect, I declare that
what I claim as my Invention and which I desire to secure to myself by
the herein-before in part recited Letters Patent is, the improved apparatus
above described for separating aqueous from oleaginous substances.
In witness whereof, I, the said Henry Medlock, have hereunto
set my hand and seal, the Twenty-second day of December, in the
year of our Lord One thousand eight hundred and seventy.