Improvements in Filters.
Year: 1891

page_text: Date of Application, 18th Mar., 1891
Complete Specification Left, 6th Jan., 1892-Accepted, 6th Feb., 1892
PROVISIONAL SPECIFICATION.
[Communicated from abroad by HENRY GOODACRE, of Lexington, in the County
of Fayette and State of Kentucky, U.S.A., Inventor.]
Improvements in Filters.
I, REGINALD WALTER BARKER, of Monument Chambers, King William
Street, London, Middlesex, Patent Agent, do hereby declare the nature of said
invention for IMPROVEMENTS IN FILTERS, to be as follows:-
This invention has relation to improvements in filters, the objects in view being
to increase the filtering capacity by multiplying the filtering-surfaces and providing
an exceedingly cheap, simple, compact, and efficient filter.
In practising my invention I construct the filter-case with double walls, as is
usual, and between the same locate a packing of charcoal or other non-heat-
conducting substance.
The inner wall of the casing is outwardly bent to form an internal annular shelf
or ledge and upon the same is mounted a rubber packing-ring, and above said
packing-ring a slight distance there is located a series of ribs between which occur
spaces.
The cover of the filter-case is of circular form and adapted to fit upon the
annular shelf, and between the bottom of the recess and the cover is located the
before-mentioned rubber packing-ring. The upper surface of the cover at its
periphery is provided with a series of inclined binding-ribs, which, when the cover
is in position upon the filter-case, will by a partial rotation of the cover be snugly
bound against the under surface of the ribs, and in this manner the cover is drawn
closely into its seat upon the packing-ring, thereby forming an air-tight joint.
The cover is also provided at its centre with a threaded nipple, to which may
be connected a pipe leading from any suitable source of supply. In this instance,
in order to facilitate a forced filtration of the water, I connect the lower end of
a suitable pipe to the threaded nipple, the upper end of said pipe being connected
with and supporting a reservoir or supply-tank. The water, being supported at
an elevation above the filter, serves to exert pressure in a discharge of the water
to the filter.
Near the lower end of the filter-case there is provided a draw-off cock, and
slightly above the same there is formed an opening in the wall of the filter-case,
from which there extends inwardly a box in which is mounted a removable
ice-drawer.
The filter proper comprises an upper and a lower circular disk or plate. The
upper disk is provided with a central perforation and with several concentric series
of short curved slots or perforations, the slots of each series alternating with short
curved depending flanges, the flanges between the slots being located slightly
nearer the centre of the disk than are the slots between which they are located.
The disk is further provided between each series of slots and ribs with a concentric
series of short curved flanges similar to the depending flanges. The lower disk is
provided with a central perforation and with several concentric series of combined
short curved slots and flanges and intermediate the same with several series of
flanges, the flanges all being located upon the upper side of the disk.
combined series of slots and flanges of the upper disk are vertically opposite or
directly above the plain flanges of the lower disk, and between each annular
combined slots and flanges and series of flanges alone is located a rubber
packing-ring. Between the two disks thus constructed are interposed a series of
filtering-cylinders, the same being constructed of any suitable porous material-
such as porcelain, &c.—said cylinders being graduated in diameters, so as to take
The

page_text: one within the other. These cylinders are seated between the rubber packing-
rings and serve to divide the filter into a series of annular filtering-compartments.
By reason of the relative location of the slots of the two disks those compartments
open at their upper ends will be closed at their lower ends, and vice versa, so that
those compartments open at their upper ends will alternate with those that are
closed at their upper ends and open at their lower ends. Through the central
openings of the two disks is passed a binding-bolt, the upper end of which extends
above said upper disk, is threaded, and is provided with a washer and a thumb-
nut for binding the disks and cylinders together. The periphery of the upper disk
of the filter is bent to form an inclined flange, which forms a tight joint with an
annular inclined supporting-shelf extending from the wall of the casing, a rubber
packing-ring serving this purpose.
The lower disk is slightly less in diameter than the upper disk, and may therefore
pass below the supporting-flange when the filter is introduced.
From the above it will be apparent that the filtering device may be entirely
separated and also withdrawn as a whole from the filter-case, whereby the case and
the elements composing the filter may be thoroughly cleaned, &c.
The unfiltered water passes from the reservoir through the pipe into the filter-
case, through the slots in the upper disk, which occur at the upper end of each
alternate compartment, and through the filtering-cylinders to the adjacent com-
partments and out through the slots formed in the lower disk at the lower ends of
the said compartments and collects in the bottom of the filter-case below the filter,
in which is located the ice box and drawer heretofore mentioned. The water here
is thoroughly cooled, and may be drawn off through the draw-off cock in the usual
manner.
It will be observed that by employing the series of filtering cylinders or sections
the capacity of the filter is greatly increased, in that a greater amount of filtering.
area is provided. The source of supply being elevated serves to force the water
through the filter more rapidly than would be the case if the water was not
introduced under pressure. For the purpose of producing this pressure various
devices will readily suggest themselves, and I do not, therefore, limit my invention
to any particular construction of such device.
Dated this 16th day of March 1891.
REGINALD W. BARKER.
COMPLETE SPECIFICATION.
Improvements in Filters.
I, REGINALD WALTER BARKER, of Monument Chambers, King William Street
London, Middlesex, Patent Agent, 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 has relation to improvements in filters, the objects in view being
to increase the filtering capacity by multiplying the filtering-surfaces and providing
an exceedingly cheap, simple, compact, and efficient filter.
Other objects and advantages of the invention will hereinafter appear, and the
novel features thereof will be particularly pointed out in the claims.
Referring to the drawings,
Fig. 1 is a perspective of a filter constructed in accordance with my invention.
Fig. 2 is a longitudinal vertical section.
Fig. 3 is a transverse central section ;
Fig. 4 is a detail in perspective of the filtering-cylinder.
Fig. 5 is a detail in plan of the lower circular disk of the filtering-cylinder ;
Fig. 6, a transverse section through ice-drawer.
Like numerals indicate like parts in all the figures of the drawings.
In practising my invention I construct the filter-case 1, with double walls, as

page_text: is usual, and between the same locate a packing of charcoal or other non-heat-
conducting substance.
The inner wall of the casing is outwardly bent to form an internal annular shelf
or ledge 3, and upon the same is mounted a rubber packing-ring 4, and above said
packing-ring a slight distance there is located a series of ribs 5, between which
occur spaces.
8 represents the cover for the filter-case, which cover is of circular form and
adapted to fit upon the shell 3, and between the bottom of the recess and the
cover is located the before-mentioned rubber packing-ring 4. The upper surface
of the cover at its periphery is provided with a series of inclined binding-ribs 10,
which, when the cover is in position upon the filter-case, will by a partial rotation
of the cover be snugly bound against the under surface of the ribs 5, and in this
manner the cover is drawn closely into its seat upon the packing-ring 4, thereby
forming an air-tight joint. The cover is also provided at its centre with a
threaded nipple 11, to which may be connected a pipe leading from any suitable
source of supply. In this instance, in order to facilitate a forced filtration of the
water. I connect the lower end of a pipe 12 to the nipple 11, the upper end of said
pipe being connected with and supporting a reservoir or supply-tauk 13. The
water, being supported at an elevation above the filter, serves to exert pressure in
a discharge of the water to the filter.
Near the lower end of the filter-case there is provided a draw-off cock 14, and
slightly above the same there is formed an opening 15 in the wall of the filter-case,
from which there extends inwardly a box 16, in which is mounted a removable
ice-drawer 17.
The filter proper comprises an upper and a lower circular disk or plate designated
as 18 and 19, respectively. The upper disk is provided with a central per-
foration 20 and with several concentric series of short curved slots or perforations 21,
the slots of each series alternating with short curved depending flanges 22, the
flanges between the slots being located slightly nearer the centre of the disk than
are the slots between which they are located. The disk is further provided between
each series of slots and ribs with a concentric series of short curved flanges 21*,
similar to the flanges 22. The lower disk 19 is provided with a central
perforation 20 and with several concentric series of combined short curved slots
and flanges and intermediate the same with several series of flanges 21×, the
flanges all being located upon the upper side of the disk. The combined series
of slots and flanges of the upper disk are vertically opposite or directly above the
plain flanges 21* of the lower disk, and between each annular combined slots and
flanges and series of flanges alone is located a rubber packing-ring 23. Between the
two disks thus constructed are interposed a series of filtering-cylinders 25, the
same being constructed of any suitable porous material-such as porcelain, &c.-
said cylinders being graduated in diameters, so as to take one within the other.
These cylinders are seated between the rubber packing-rings 23 and serve to divide
the filter into a series of annular filtering-compartments. By reason of the
relative location of the slots of the two disks those compartments open at their upper
ends will be closed at their lower ends, and vice versa, so that those compartments
open at their upper ends will alternate with those that are closed at their upper
ends and open at their lower ends. Through the central openings of the two disks
is passed a binding-bolt 26, the upper end of which extends above said upper disk,
is threaded, and is provided with a washer 27 and a thumb-nut 28 for binding the
disks and cylinders together. The periphery of the upper disk of the filter is
bent to form an inclined flange 24, which forms a tight joint with an annular inclined
supporting-shelf 24* extending from the wall of the casing 1, a rubber packing-
ring 23 serving this purpose. The lower disk is slightly less in diameter than
the upper disk, and may therefore pass below the supporting-flange when the filter
is introduced.
From the above it will be apparent that the filtering device may be entirely

page_text: separated and also withdrawn as a whole from the filter-case, whereby the case and
the elements composing the filter may be thoroughly cleaned, &c.
The unfiltered water passes from the reservoir through the pipe into the filter-
case, through the slots in the upper disk, which occur at the upper end of each
alternate compartment, and through the filtering-cylinders to the adjacent com-
partments and out through the slots formed in the lower disk at the lower ends of
the said compartments and collects in the bottom of the filter-case below the filter,
in which is located the ice box and drawer heretofore mentioned. The water herc
is thoroughly cooled, and may be drawn off through the draw-off' cock in the usual
manner.
It will be observed that by employing the series of filtering cylinders or sections
the capacity of the filter is greatly increased, in that a greater amount of filtering-
area is provided. The source of supply being elevated serves to force the water
through the filter more rapidly than would be the case if the water was not
introduced under pressure. For the purpose of producing this pressure various
devices will readily suggest themselves, and I do not, therefore, limit my invention
to any particular construction of such device.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination, with a filter-case, of a filter supported therein, the same
comprising opposite disks, a series of filtering-partitions forming a series of filtering-
compartments, the upper disk being perforated opposite the upper end of each
alternate compartment and the lower disk perforated opposite the lower end of
each intermediate compartment, and means for connecting said disks, substantially
as specified.
2. The combination, with a filter-case, of a filter mounted therein, the same
comprising upper and lower perforated disks, a series of cylindrical and graduated
filtering-cylinders arranged between the plates and spaced apart to form a series of
annular filtering-compartments, the upper disk being perforated opposite the upper
end of each alternate compartment and the lower disk perforated opposite the
lower end of each intermediate compartment, and a binding-bolt passed through
the centre of the two disks and the central cylinder, substantially as specified.
3. The herein-described filtering medium adapted for suspension within the
filter-case, the same consisting of upper and lower disks, each having several
concentric series of alternating flanges and slots, those of the lower disk being
arranged out of vertical alignment with those of the upper disk, a series of packing-
rings mounted between said series, cylindrical filtering-sections mounted between
opposite rings of the two disks, a binding-bolt connecting the two disks, and a
binding-nut mounted on the end of the bolt, substantially as specified.
Dated this 6th day of January 1892.
REGINALD W. BARKER.