A Certain New and Useful Apparatus and Process for Filtration Purposes.
Year: 1899

page_text: Date of Application, 18th Oct., 1899-Accepted, 18th Nov., 1899
COMPLETE SPECIFICATION.
A Certain New and Useful Apparatus and Process for Filtration
Purposes.
We, ALBERT SMITH, residing at 6, Ontario Street, in the City of Toronto, in
the County of York and Province of Ontario, Butcher, FREDERICK SMITH,
residing at 6, Ontario Street, in the said City of Toronto, Butcher, and ARCHI-
BALD STEWART MUIR, residing at 38, Leonard Avenue, in the said City of
Toronto, Chemist. 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 relates to a certain new and useful apparatus and process for
filtration purposes, and the object of the invention is to provide a process by
means of which solid substances can be effectively separated from liquid matter
in a simple and rapid manner; and the invention consists essentially of a cen-
trifugal separator provided with a filter of such a nature that it will retain the
solid substances, and allow the liquid matter to pass freely through it to the
outlet from the separator, as hereinafter more fully set forth and more particu-
larly pointed out in the claims.
In the drawings:
Fig. 1 is a perspective view of the apparatus.
Fig. 2 is a cross sectional view of the same.
Like letters of reference refer to like parts throughout the specification and
drawings.
The inner or perforated cylinder A is provided with a convexed bottom B to
cause the drainage of the contents to the periphery a of the cylinder.
Enclosing the perforated cylinder A is the outer cylinder D, the lower edge
of which is provided with an inturned flange E upwardly flaring, and of a
sufficient width to partially overlap the bottom of the inner cylinder A.
The cylinder D) is supported by standards E connected to the base F, and
connected to the centre of the under side of the bottom B is the upper end of
a shaft G, the lower end of which is journaled in bearings I mounted on the
base F. Mounted on the shaft G is a pulley or drum I, and connected to one
of the standards E are two pulleys or drums J and J¹ respectively. Passing
around the drums I, J, J is a belt K by means of which a rotary motion is
imparted to the shaft G. By imparting a rotary motion to the shaft the inner
cylinder is caused to rapidly rotate, and during its rotation throw its contents
from the centre to the periphery.
For filtering water the inner face of the inner cylinder A is covered with
bone charcoal to a depth of approximately one-half inch, which is held in place
The water is intro-
by the centrifugal force of the revolution of the cylinder.
duced into the cylinder whilst it is revolving at a high rate of speed, and by
the centrifugal force of the revolution of the cylinder is forced through the
charcoal filter and through the porous or foraminous periphery a, the passage
of the solid substance with the liquid being resisted by the density of the filter.
The liquid driven through the inner cylinder strikes against the inner face of

page_text: the outer cylinder and descends to the inturned flange in which it is collected
and passes from the cylinder E through an outlet L.
For varnish and glue a filter consisting of porous paper faced and backed
with strong textile fabric, such as duck or similar material, is used to line the
inner face of the periphery a of the inner cylinder; whilst for wines and
liquors a lining of paper pulp, and for fats and oils it is preferable to use a
filter of fuller's earth and charcoal mixed; whilst for dry colors and placer
mining it is preferable to use a filter of textile fabric material placed as a
lining against the inner face of the periphery a.
Whilst several purposes for which the filter can be employed have been
enumerated, it is possible to use it for many more purposes by changing the
filtering substance within the inner cylinder.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed. we declare that
what we claim is:-
-
1. The process of filtration herein before described.
2. The apparatus and process for filtration purposes herein before described
and illustrated in the accompanying drawings.
3. A process for filtering purposes consisting of passing the unfiltered matter
through a filtering substance by centrifugal force, substantially as specified.
4. A process and apparatus for filtering purposes consisting of an inner
cylinder having a perforated periphery and a convexed bottom, to the centre of
the under side of which is connected a vertical shaft journaled in suitable bear-
ings, adapted to receive a rotary motion, an inperforate outer cylinder enclosing
the inner cylinder, having at its lower edge an inturned flange upwardly flaring
to partially overlap the bottom of the inner cylinder, substantially as specified.
תנית
1
1
T
בד
1000
A. SMITH.
F. SMITH.
ARCHIBALD S. MUIR.
By George Barker,
Fellow of the Chartered Institute of Patent Agents,
Agent for Applicants, 77, Colmore Row, Birmingham..