Improvements in Apparatus for Purifying Waste Oil.
Year: 1891

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Purifying Waste Oil.
I, OLE KRISTIAN THOMASSEN, of Engens Gade, 14, Christiania, in the Kingdom
of Norway, 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
My invention relates to apparatus for purifying waste oil such as the lubricating
oil which collects in the dripping cups under the bearings and other parts of
machinery.
The accompanying drawing represents a vertical section of an apparatus for
purifying waste oil constructed according to my invention.
In carrying out my invention I employ three cylindrical receivers A. B and D.
These three receivers are loosely connected together, so that they can be easily
lifted off one another. A handle fixed to the lid of the apparatus is furnished with
holes for the passage of air.
The oil intended to be cleansed, is poured into the receiver A, and, following the
direction of the arrows, passes through a sieve 1, made of closely woven iron-wire
gauze, stretched across the lower opening of a sheet metal cylinder, the upper edge
of which is bent over the upper edge of the receiver A; the coarser impurities are
by this means removed from the oil which then passes through another sieve 2;
this sieve is made of coarsely woven iron-wire gauze, which is likewise stretched
across the lower opening of a sheet metal cylinder, the upper edge of which is bent
out over the upper edge of the receiver A.
These sieves are so placed as to be easily removable. Above the sieve 2 are
laid one or two sheets of wadding, secured by a conical ring which compresses
the wadding between itself and the sides of the cylinder and thereby prevents
the oil from penetrating downwards round the edges. The said ring is
furnished with a handle by means of which it can be taken out and replaced
when the wadding is to be renewed or cleansed. 3 is a sieve made of flannel
or other suitable material placed vertically for preventing the impurities which
collect at the bottom of the receiver A from quickly choking up or clogging
the sieve. The flannel in the sieve 3 is secured in the same manner as the
wadding in the sieve 2, so that it can easily be taken out and cleansed. The
oil that has passed through the sieve 3 flows out through a cock inserted in
the lower part of the receiver A and into a basin that leads to a sieve 4, made
of two pieces of iron-wire gauze placed vertically, between which is a sheet of
flannel which is held in position by a frame in a socket, whereby the sheet is
firmly pressed so that the oil is unable to run through the edges of the sheet.
Behind this sheet there is also room for a double sheet of wadding. After
passing through the sieve 4, in front of which the impurities are collected at
the lower part, in a space arranged for this purpose, the oil runs down to the
receiver B in the bottom of which a number of pipes are placed, the centre
one of which is for the passage of air; in the rest of the pipes are placed
suction wicks through which the oil is conducted into the receiver D. The
water, and impurities which the oil may possibly contain after its passage
through the last sieve remains behind, at the bottom of the receiver B. The
oil collected and cleansed in the receiver D is drawn off by means of a cock inserted
in said receiver and is ready to be re-used.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A
musification of waste oil consisting of a series of

page_text: cylindrical receivers, loosely placed upon one another, two horizontal sieves placed
one above the other in the uppermost receiver, and each consisting of a sheet metal
cylinder, the upper edge of which is bent over the edge of the said receiver the
lower opening of which is covered with wire gauze; a flannel sieve placed vertically
in the lower part of the same receiver; a cock placed in front of this sieve under
the outlet of which is placed a basin, leading into the next receiver, to a vertically
placed sieve, consisting of two pieces of wire gauze, between which is placed a sheet
of flannel held fast by a frame in a socket and a number of pipes passing through
the bottom of the last mentioned receiver, the centre one of which pipes is for the
passage of air, the others being. furnished with suction-wicks, the whole being
arranged and operating substantially as hereinbefore described.
:
2. The improved apparatus for purifying waste oil herein before described and
illustrated in the accompanying drawing.
Dated the 25th day of August 1891.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.