AN IMPROVEMENT IN VESSELS FOR FILTERING OILS."
Year: 1862

page_text: LETTERS PATENT to Henry Martin Radloff, of Limehouse, in the County
of Middlesex, Oil Refiner, for the Invention of "AN IMPROVEMENT IN
VESSELS FOR FILTERING OILS."
PROVISIONAL SPECIFICATION left by the said Henry Martin Radloff
at the Office of the Commissioners of Patents, with his Petition, on
the 15th September 1862.
I, HENRY MARTIN RADLOFF, of Limehouse, in the County of Middlesex, Oil
Refiner, do hereby declare the nature of the said Invention for "AN IMPROVE-
MENT IN VESSELS FOR FILTERING OILS," to be as follows:-
Hitherto oils have been filtered in vessels with plain sides, in which a
filtering body has been compressed and held between two perforated plates,
the oil being filtered by ascension. From the sides having been plain, instead
of the whole of the oil passing up through the filtering body, a portion lins
found its way between the filtering body and the plain sides of the vessels.
Now, my Invention consists in forming the filtering vessels in two parts, the
upper part being formed with a flange fitting inside the other part, and resting
upon the edge of the upper perforated plate. I also form a ledge inside the
under part, upon which the upper perforated plate rests. No portion of the
oil can pass except through the filtering body.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Henry Martin Radloff in the Great Seal Patent Office on
the 14th March 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, HENRY
MARTIN RADLOFF, of Limehouse, in the County of Middlesex, Oil Refiner,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of September, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Henry Martin Radloff, Her special licence, that I, the said Henry
Martin Radloff, my executors, administrators, and assigns, or such others as
I, the said Henry Martin Radloff, 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 "Ar
IMPROVEMENT IN VESSELS FOR FILTERING OILS," upon the condition (amongst
others) that I, the said Henry Martin Radloff, my executors or adminis-
trators, 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 Martin Radloff, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement, reference being had to the Drawings hereunto annexed,
that is to say :-
Hitherto oils have been filtered in vessels with plain sides, in which a
filtering body has been compressed and held between two perforated plates,
the oil being filtered by ascension. From the sides having been plain, instead
of the whole of the oil passing up through the filtering body, a portion has
found its way between the filtering body and the plain sides of the vessels.
Now, my Invention consists in forming the filtering vessels in two parts, the
upper part-carrying a flange fitting inside the other part, and resting upon the
edge of the upper perforated plate. I also form a ledgo inside the under part,

page_text: upon which the upper perforated plate rests. No portion of the oil can pass
except through the filtering body.
The annexed Drawing is a sectional elevation of an oil filtering vessel con-
structed according to my Invention.
A is the lower part of the vessel, with an inlet at bottom for the admission
of the oil to be filtered; a, a, are rings or projections for carrying perforated
plates b, b; and B is a flange for supporting the upper perforated plate c;
compressed filtering material is held in the usual manner between the per-
forated plates; C is the upper part of the filtering vessel, it is of smaller
diameter than the lower part where the two parts meet, and carries an internal
flange D, which fits inside the lower part A, and rests upon the top of the
upper perforated plate c. This plate c is thus held between the internal
flanges B and D, and all passage of oil from the lower to the upper part of
the vessel except through the plate c is thereby prevented. E, E, are external
flanges, whereby the two parts of the vessel are bolted together, suitable
packing being inserted between the flanges; F is the outlet for the oil after
having been filtered. The oil is caused to ascend through the filtering vessel
in the ordinary manner.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I do not limit myself to
any particular form of filtering vessel; but I claim constructing vessels for
filtering oils in two parts provided with flanges, between which the upper
perforated plate is held, in manner and for the purpose herein-before
described.
In witness whereof, I, the said Henry Martin Radloff, have hereunto set
my hand and seal, this Fourteenth day of March, One thousand eight
hundred and sixty-three.
HENRY MARTIN RADLOFF. (L.S.)