IMPROVEMENTS IN FILTERS
Year: 1885

page_text: "
I, FREDERICK ROGERS LIPSCOMBE of 233 Strand in the County of Middlesex
Filter Manufacturer do hereby declare the nature of said Invention for
'IMPROVEMENTS IN FILTERS" to be as follows:-
The object of my Invention is to provide a Filter which will give a large filtering
area in relation to the space occupied than is obtained with Filters as usually
constructed the parts of my improved Filter being readily removed for cleaning and
as readily replaced the arrangement being such also that a pressure of water is
obtained sufficiently even to ensure the water being properly filtered.
In a Filter conducted according to my Invention I provide a series of cylinders
or vessels or angular or other shaped constructions made of a porous material and
placed one within the other with spaces between each which spaces are filled with
powdered charcoal or other suitable filtering material. The outside cylinder vessel
or construction is preferably covered by a filtering cloth which may be capable
of being removed for cleaning or can be scraped by any suitable arrangement
provided for the purpose. The cylinders vessels or constructions may have fixed
or moveable bottoms and tops. The cylinders vessels or constructions are placed
in a tank or receptacle into which the water to be filtered is introduced the said
water percolating through the sides of the cylinders, vessels or constructions and the
filtering material and entering the central cylinder, vessel or construction which if
it be covered is provided with an air vent.
The interior of the said cylinders or vessels may be divided by partitions into
compartments.
The water is drawn off from the central cylinder or vessel or separately from
each of the compartments. The inlet for the water to the tank or receptacle
containing the filter may have a filtering cloth stretched across it so that no water
can pass except through the cloth. This cloth may be an endless one extending
over rollers above and below or on each side of the inlet and working in packed
grooves and having a scraper extending across it so that by operating one of the
rollers the cloth is caused to move over the scraper to remove impurities which
may have lodged upon it.

page_text: Improvements in Filters.
I FREDERICK ROGERS LIPSCOMBE of 233 Strand in the County of Middlesex
Filter Manufacturer 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:—
The object of my Invention is to provide a Filter which will give a larger
filtering area in relation to the space occupied than is obtained with filters as usually
constructed the parts of my improved Filter being readily removed for cleaning
and as readily replaced, the arrangement being such also that a pressure of water
is obtained sufficiently even to ensure the water being properly filtered.
In a filter constructed according to my Invention I provide a series of cylinders
or vessels or angular or other shaped constructions made of a porous material (or
perforated and covered with a porous material) and placed one within the other
with spaces between each, which spaces are filled with powdered charcoal or other
suitable filtering material. The outside cylinder vessel or construction, if not itself
formed of a porous material is covered by a filtering cloth or porous material which
may be capable of being removed for cleaning or can be scraped by any suitable
arrangement provided for the purpose. The porous material which I prefer to
employ for the purposes of my Invention is asbestos but I do not limit myself to
the use of any one particular porous material. The cylinders vessels or con-
structions may have fixed or movable bottoms and tops The cylinders vessels
or constructions are placed in a tank or receptacle into which the water to be
filtered is introduced, the said water percolating through the sides of the Cylinders
vessels or constructions or their porous coverings and the filtering material and
.entering the central Cylinder Vessel or construction which if it be covered may be
provided with special air vent. The interior of the said 'cylinders or vessels may be
divided by partitions into compartments. The water is drawn off from the central
cylinder or vessel or separately from each of the compartments.
The accompanying Drawing which is a vertical section of a filter made according
to my Invention will serve to illustrate clearly the way in which my said
Invention can be carried into effect. It is to be understood however that I do not
limit myself to this particular form nor to the use of two Cylinders or constructions
only as shewn. A is an inner perforated cylinder covered with asbestos B, and
C is an outer cylinder also covered with asbestos D. The said cylinders are
covered at top and bottom by plates or covers marked E and F respectively, the
former being provided when necessary with an air vent. The plate E is necessary
when the apparatus is to be immersed in water in a vessel or tank as shewn but
when the external water to be filtered will never ascend above the level of the tops
of the cylinders the top plate E may be dispensed with and the bottom of the
vessel or tank in which it is placed may take the place of the bottom plate F.
H is the outlet for filtered water, the space between the cylinders contains charcoal
or other filtering material as at I. The external water passes through the porous
material D, leaving its coarser impurities thereon and then passes through the
perforations in the cylinder C, and then through the filtering material at I, and

page_text: thence through the porous material B, and through the perforations in the
cylinder A into the space at J, enclosed thereby, from whence it may be drawn
through the outlet H. The material B, may be omitted if desired. The inlet for
the water to the tank or receptacle containing the filter may have a filtering cloth
stretched across it so that no water can pass except through the cloth. This cloth
may be an endless one extending over rollers above and below or on each side of
the inlet and working in packed grooves and having a scraper extending across it,
so that by operating one of the rollers the cloth is caused to move over the scraper
to remove impurities which may have lodged upon it.
Having now particularly described and ascertained the nature of this Inven-
tion and the manner in which the same is to be performed I declare that what
I claim is
First. A filter consisting of two or more cylinders or structures formed of a
porous material or perforated and covered with a porous material such as asbestos,
or the outer cylinder or structure only being formed of or covered with a porous
material the other cylinder or cylinders or structure or structures being perforated,
there being a space or spaces between the adjacent cylinders containing filtering
material so that the water passes through the Cylinders and porous and filtering
materials and can be drawn off from the central or inward space substantially as
herein before described and illustrated in the accompanying Drawing.
Second. The arrangement and combination of parts constituting a filter as
herein before described and illustrated in the accompanying Drawing, whether the
covering B of the inner cylinder A, be used or not.