Improvements in Oil Filters.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Oil Filters.
I, GREEVZ FISHER, trading as The Kingfisher Patent Lubrication Company,
Sackville Street, Leeds, in the County of York, Oil Merchant, do hereby declare.
the nature of this invention to be as follows:-
This invention is designed to provide a cheap and handy apparatus for the
filtering or purifying of dirty oils for use in factories and other places. The
apparatus is built up in three sections fitted together or one into the other.
The top section receives the dirty oil and is fitted with a syphon in which one
tube fits over the other. The outer tube of the syphon is capable of sliding up
and down and is fitted with a float which rests on the surface of the oil- and rises
and falls with the oil. This float when at the bottom rests some distance above
the bottom of this section of the vessel so that the heavy impurities may settle
out and fall to the bottom without being carried over the syphon. The outlet
of the syphon is provided with a plug tap to which a pipe or rod is attached so
that the tap can be actuated from outside by a key fitting into a socket on the
end of the rod.
The second or intermediate section of the vessel comprises a containing vessel
at the bottom with a wire gauze or sieve and filtering cloth. These are prefer-
ably secured in position by a loose or movable ring held in position by clips or
other catches so that the gauze and cloth can be readily removed either for clean-
ing or renewal.
The intermediate section fits down into the interior of the bottom section
which receives the filtered oil and is provided with one two or more taps. It
preferably is arranged to contain a layer of water at the bottom through which
any material heavier than the oil or water will fall one tap being provided for
drawing off the water and another for drawing off the clean oil.
Dated this 20th day of March 1899
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
Improvements in Oil Filters.
I, GREEVZ FISHER, trading as The Kingfisher Patent Lubrication Company,
Sackville Street, Leeds, in the County of York, Oil Merchant, 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:--
This invention is designed to provide a cheap and handy apparatus for the
filtering or purifying of dirty oils for use in factories and other places.

page_text: It consists essentially of an apparatus built up in three sections fitted together
or one into the other the top section to receive the dirty oil and provided with a
discharge pipe so placed a as to allow of heavy impurities to settle out, and the
second or intermediate section provided with a gauze or cloth to strain or filter
out the impurities and the bottom section to receive and contain the filtered oil
as it descends after being purified.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Side elevation.
Fig. 2. Sectional elevation with strainer to discharge pipe B.
Fig. 3. Sectional elevation of upper part with float to discharge pipe B.
Fig. 4. Sectional elevation of upper part with capillary syphon attached to
float over discharge pipe B.
Fig. 5. Plan of capillary syphon..
Fig. 6. Sectional elevation of upper part with strainer to discharge pipe B
being a modification of that shown in Fig. 2.
Fig. 7. Sectional plan of Fig. 6.
Fig. 8. Sectional elevation of upper part showing another modification of the
strainer and the discharge pipe B
Fig. 9. Plan from bottom of Fig. 8.
The top part or section A of the filter which receives the waste or dirty oil is
provided with a discharge pipe B through which the oil flows down to the second
or filtering chamber D. The outlet end of the discharge pipe B is placed at
a considerable height above the bottom of the receiver A to permit of impuri-
ties settling out before the oil flows to the filtering chamber.
The upper or outlet end 6 of the discharge pipe B is protected to prevent float-
ing impurities entering it either by a strainer C as in Figs. 2 6 & 7 or by a cover-
ing pipe C forming a syphon which is kept in the proper relative position by
a Hoat c.
The strainer C may be simply a drum of gauze wire attached to the outlet
end of the discharge pipe B as in Fig. 2 but it preferable that the inlet to
the gauze should be below the surface of the liquid or a casing or protector c¹
be placed to surround the strainer Fig. 6, to prevent floating impurities attach-
ing themselves thereto. The casing is perforated in the bottom below the oil
level with perforations &² through which the oil flows up and around the strainer.
The top may be open or closed as desired and the strainer may be supported by
an inner perforated cylinder 3. In the modification shown in Fig. S the outlet
end of the discharge pipe B is protected by the cover b¹ below which and below
the oil level the strainer C is placed horizontally so that floating impurities
cannot come into contact with it and the heavier impurities will fall below it.
Instead of a strainer a covering pipe C may protect the outlet end 6 of the
discharge pipe B as in Fig. 3 forming a syphon with the discharge tube B the
end of the covering pipe C being always maintained below the surface of the
oil by the float c which rests upon the surface of the oil and rises and falls with
it.at the same time raising and lowering the covering pipe C. Or a capillary
syphon made with lamp wick or other suitable material as shown in Figs. 4 & 5
may be employed for the same purpose. The oil is drawn up by the suspended
ends of the wicks 2 which dip down into it and is delivered at the interior to
the discharge pipe B through the covering pipe C¹.
Four capillary syphon wicks have their shorter ends fixed in the outer
pipes 63 preferably by doubling over a wire at the end of each pipe. The longer
ends of the syphon wicks hang down inside the central pipe C being preferably
retained in their position by one or more weights.
The central or other dependent pipe containing longer ends of wicks as the
float rises or falls work freely up and down in the discharge pipe. B.
.
The discharge pipe B is provided with a plug tap E to which is attached a rod
or pipe e extending to the outside of the vessel and there fitted with a knob. or
key for turning the tap.

page_text: The second or intermediate section D of the vessel comprises a filtering vessel
the bottom of which is fitted with a wire gauze or sieve and filtering cloth d.
These are preferably secured in position by a loose or movable ring G held in
position by clips g or other catches so that the gauze and cloth d can be readily
removed either for cleaning or renewal.
The intermediate section D fits down into the interior of the bottom section H
which receives the filtered oil and is provided with one two or more taps, prefer-
ably two K and L.
A quantity of water is poured into it to the level of the tap K through which
any sediment heavier than the water or oil will sink. The purified, oil is drawn
off through the tap L.
Having now particularly described and ascertained the nature of the said in-
vention and in what manner the same is to be performed, I declare that what
I claim is:-
1. An oil filter constructed in three sections or parts the top one to receive
the dirty or waste oil in which heavy impurities can settle out provided with
an outlet pipe with a protector to prevent the entry of floating impurities the
second section forming a filtering chamber provided with gauze and cloth.
filtering material at the bottom and the third one a storage chamber for the
purified oil substantially as described.
2. An oil filter having the several parts constructed and arranged in combina-
tion substantially as described and shown with reference to either of the figs.
of the drawings.
Dat his 4th dox of Tonnor 1000
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.