IMPROVEMENTS IN THE FILTRATION OR SEPERATION OF MINERAL OR OTHER OIL FROM OLEAGINOUS MATTER OR FROM MATTER OR COMPOUNDS CONTAINING OIL, AND IN APPARATUS THEREFOR, APPLICABLE ALSO TO THE FILTRATION OF SOME OTHER MATTERS
Year: 1871

page_text: PROVISIONAL SPECIFICATION left by Heinrich Stapfer and Thomas
Dean at the Office of the Commissioners of Patents, with their
Petition, on the 10th April 1871. .
WC, HEINRICH STAPFER, of Manchester, in the County of Lancaster,
Dentist, and THOMAS DEAN, of Leeds, in the County of York, Oil
Merchant, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN THE FILTRATION OR SEPERATION OF MINERAL OR OTHER
OIL FROM OLEAGINOUS MATTER OR FROM MATTER OR COMPOUNDS CONTAINING OIL,
AND IN APPARATUS THEREFOR, APPLICABLE ALSO TO THE FILTRATION OF SOME OTHER
MATTERS," to be as follows:
Our Invention relates more particularly to the treatment of oil, or of
oleaginous or fatty matter or compounds, such as, for example, the matter
styled "foots," in order to seperate the clear or fluid oil therefrom, and
is also applicable to the treatment of some other matters, as, for example,
of beeswax. For this purpose we usually, in the first place, subject the
said oil or matter to a preparatory filtration in order to remove the
grosser impurities. The oil or oleaginous or other matter is caused to
flow through the filtering medium by the pressure of the atmosphere,
the said oil or matter being removed from within the enclosed space

page_text: into which it flows after passing through the said filtering medium by
means of a pump or of pumps. The said oil or matter is then forced
by means of a force pump or of force pumps into an apparatus of
suflicient strength to withstand an internal pressure of great amount,
say, for example, of two to three thousand pounds on each square inch.
The said apparatus is constructed of cast iron or gun metal or other
suitable metal, and in two or more parts, so fitted and bolted together
as to be capable of being readily disunited, the bolts or connections
being of a strength suitable to the strain to which they are subjected
when the said matter is forced into the apparatus as aforesaid. The
said apparatus is fitted or provided with a filter, which is preferably
of a circular form, the filtering medium consisting of slate, stone, or
other suitable porous substance or material, or combination of substances
or materials collectively capable of withstanding great pressure; and
in order to support the said filtering medium it is caused to rest upon
a number of ribs, which we prefer should radiate from the centre of a
circular concave cavity, which communicates with the passage or passages
for the outflow of the filtered oil, and over which cavity the said
filtering medium is placed, the said ribs extending to the outer edge
of the said cavity, and to the bottom thereof, and being sufficiently close
together to furnish the necessary support to the said filtering medium.
This arrangement of the said ribs or supports may however be varied as
desired. The apparatus may in some cases be fitted with more than
onc filter. The oleaginous matter is forced into the said apparatus until
there is a sufficient pressure within the said apparatus to cause the fluid
oil to flow through the pores of the said filter or filters, tho coarser
or more solid matter or matters remaining within the apparatus, from
whence it or they may be removed at intervals after disconnecting the
parts of which the said apparatus is composed as aforesaid, or the said
apparatus may be formed with a man-hole or hand hole fitted with a
removable cover, through which man-hole or hand hole the said matter
or matters may be removed. When treating some descriptions of matter,
such as, for example, beeswax, lard, or tallow, the said apparatus is
heated to a suitable degree.