Year: 1896

page_text: эшет
1, CHARLES JAMES BROWN, Engineer of 15 Victoria Street, Westminster, in
the County of London, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the construction and arrangement of a water filter in
such a manner that the water is filtered partly upwards and partly downwards, and
the filtering material can be readily cleansed from time to time, as may be
desired.
For this purpose, I provide a vessel preferably of cylindrical form, having at
some distance from its bottom a false bottom consisting of a perforated plate
covered by wire gauze, and baving around the upper part of its periphery an
annular gutter. In the middle is mounted a vertical shaft which is tubular and
has lateral perforations covered by gauze in its upper part and lateral openings in
its lower part below the false bottom. On this shaft is fixed a drum having
inclined blades in its interior, the lower edge of this drum being at a little distance
above the false bottom.
The filtering material is placed on the false bottom enclosing the drum.
There is an inlet pipe to the space above the filtering material and an outlet pipe
from about the middle of the height of the filtering material this pipe extending
in circular form through the body of the filtering material and being laterally
perforated.
In ordinary working, part of the water passes down the tubular shaft and rises
through the false bottom and filtering material, and part passes down through the
filtering material, the whole issuing filtered by the outlet pipe.
When it is desired to cleanse the filtering material, the outlet pipe is closed and
the vertical shatt with its drum is caused to revolve so as to agitate the filtering
material and cause a current to flow up the interior of the drum the dirt being thus
carried up with water to the gutter, from which the dirty water is discharged.
Dated this 2nd day of March 1896.
ABEL & IMRAY,
Agents for the Applicant.
1, CHARLES JAMES BROWN, Engineer, of 15 Victoria Street, Westminster, in
the County of London, do hereby declare the nature of this invention and in what
6 manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-
This invention relates to the construction and arrangement of a water filter in
such a manner that the water is filtered partly upwards and partly downwards,
and the filtering material can be readily cleansed from time to time, as may he
desired.

page_text: For this purpose, I provide a vessel preferably of cylindrical form, having at
some distance from its bottom a false bottom consisting of a perforated plate.
covered by wire gauze, and having around the upper part of its periphery an
aunular gutter. In the middle is mounted a vertical shaft which is tubular and
has lateral perforations covered by gauze, in its upper part and lateral openings in
its lower part below the false bottom. On this shaft is fixed a drum having
inclined blades in its interior, the lower edge of this drum being at a little distance
above the false bottom.
The filtering material is placed on the false bottom enclosing the drum.
There is an inlet pipe to the space above the filtering material and an outlet pipe
from about the middle of the height of the filtering material this pipe extending
in circular form through the body of the filtering material and being laterally
perforated.
In ordinary working, part of the water passes down the tubular shaft and rises
through the false bottom, and filtering material, and part passes down through the
filtering material, the whole issuing filtered by the outlet pipe.
When it is desired to cleanse the filtering inaterial, the outlet pipe is closed and
the vertical shaft with its drum is caused to revolve so as to agitate the filtering
material and cause a current to flow up the interior of the drum the dirt being thus
carried up with water to the gutter, from which the dirty water is discharged.
The accompanying drawing shews the construction of a filter having my above
described improvements applied thereto.
Figure 1 shews a vertical section, and Figure 2 a sectional plan.
The filter casing A has a perforated false bottom 13, on which is placed the
layer C of filtering material.
Centrally through the false bottom passes the tube D, having perforations of in
the part above the filter bed, and other perforations d' below the false bottom; the
tube D is carried loose in bearings at top and bottom, and can be rotated by
toothed gear E and a crank handle.
On the part passing through the filter hed is formed or fixed a drum F, open at
top and bottom, and containing screw blades f. G is the inlet for the water to
be filtered, and H is the outlet for the filtered water, to which is fixed a perforated
tubular ring situated at about the middle of the filter bed. is an annular
gutter, communicating with a discharge hole a in the casing A.
In working, the water to be filtered entering through G, partly filters downward
through the upper part of the filter bed, and partly passes through the perfora-
tions d and d of tube D to the spare below the perforated hotton B, whence it
rises up through the lower part of the filter bed, and flows off, together with the
water descending through the upper part through the pipes H.
When it is desired to cleanse the filtering material the outlet pipe H is closed
and the water being still supplied through G, the tube D with the drum F are
rapidly rotated, whereby the filtering material together with the water will, by
means of the screw blades, be raised up from the lower part of the filter bed
and discharged into the space above the filter bed. The water is thus made to take
up the deposit from the filtering material and it then flows off through the gutter
and hole.
Having now particularly described and ascertained the nature of this inven
tion and in what manner the same is to be performed 1 declare that what I
claim is :-
1. A filter consisting of a bed of filtering material so arranged within a casing
that the water to be filtered can penetrate both through the top and the bottom
surface of the filter bed, while the outlet for the filtered water communicates with
the middle part of the filter bed, substantially as described.
2. In a water filter, the combination of a perforated false bottom on which rests
the layer of filtering material, with a tube or channel passing down through the
false bottom and arranged so as to convey a portion of the water to be filtered to

page_text: the space below the same, and a draw off pipe so placed as to be situated at about
the middle of the bed of filtering material, so that while one portion of the water
to be filtered passes down through the upper part of the filter bed, another portion
flows in an upward direction through the lower part thereof substantially as
described.
3. The combination, with a water filter, of a device for cleansing a bed of loose
filtering material from deposit consisting of a rotatable drum imbedded in the said
filtering material and having internal blades or chanuels so formed, that when the
drum is rotated, it carries up the material and water from the lower part of the
filter bed and discharges it into the space above whence the water flows off through
an annular gutter and discharge opening substantially as described.
4. In a water filter, the combination with a casing A of a perforated false
bottom B, a rotatable tube D passing through the false bottom and having
perforations d and d and carrying a drum F with helical blades or channels, a
draw off pipe H h situated at about the middle of the filter bed, and an annular
gutter with discharge hole a, the said parts being arranged and operating
substantially as herein described with reference to the drawing.
Dated this 1st day of December 1896.
ABEL & IMRAY,
Agents for the Applicant.