Improvements in Oil Purifying Apparatus.
Year: 1899

page_text: Date of Application, 5th June, 1899-Accepted, 8th July, 1899
COMPLETE SPECIFICATION.
Improvements in Oil Purifying Apparatus.
I, CARL FROWEIN, of Barmen, Werlestrasse, No. 69, Rhenish Prussia, Germany
Manufacturer, 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:-
<<
My invention relates to a new apparatus for purifying waste oil or so called
drop oil" from bearings and other parts of inovable elements of machinery
and oil that had been contaminated with elements rendering it unfit for use.
Various apparatus have been designed and come in use for the same purpose,
but all of them are complicated, dear in price and of comparatively small efficiency.
My apparatus has the valuable advantage that it is very simple in construction,
therefore cheap in price and economical in its working.
On the accompanying drawing it is shown in a vertical section by means of
which and the description following hereafter its construction and manner of
working will be easily understood.
It consists of a vessel A of cylindrical or other suitable form; the lower part A
is by preference made somewhat wider than the upper part; at the bottom of the
upper part a flange B or simply three or more projections are arranged to serve
as a bearing for a sieve C of perforated sheet metal placed thereon in the vessel A;
upon this sieve I place a disc D consisting of a ring D¹ over which is stretched
a piece of rough cotton cloth so as to form also a sievelike bottom. Upon this
dise I put a layer E of wood shavings or of similar light and porous material
and then a disc D2 of similar construction like D, D' follows and so on, alter-
On the top
hately a layer of wood shavings and a disc in sufficient number.
of the uppermost disc D a sieve C is placed and on the top of this I put a
weight E, so that the whole is somewhat compressed. A cover F closes the
vessel.
The widened lower part A' is quite closed it serves as the receiver or tank into
which the cleaned oil drops from the filter in the upper vessel A. By a cock (
the collected oil can be tanned into suitable vessels for further use.
The soiled oil is poured into
The working of the apparatus is as follows:
the upper vessel A thence is flows through the compound filter C, D, E, Dº, E,
1), C and arrives in a purified state in the lower collecting vessel A'. On its way
all the impurities having been retained by the shavings and the sieves. When
the filter material has become saturated with mud it can be easily and conveniently
replaced by simply opening the cover F and taking out the unfit material, and
the sieves can be cleaned and washed to be fit for further use.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is
An apparatus for purifying waste oil of all sorts and consisting of a vessel A,
A and of a compound filter composed of alternate layers of wood shavings E, E
placed upon a sieve C of perforated sheet metal resting upon a flange B and a

page_text: disc D, D¹ over which rough cotton cloth is stretched, similar discs D³, D* being
placed between and above the layers of shavings and the whole covered by a
sieve of sheet metal C2 and a weight E¹ on the top to compress the material
between the upper and lower sieve; the whole as illustrated and described and
for the purpose set forth.
CARL FROWEIN,
Per Karl J. Mayer,
Agent.