Improvements in and relating to Filtering Apparatus.
Year: 1896

page_text: Date of Application, 14th Nov., 1896
Complete Specification Left, 23rd July, 1897-Accepted, 6th Nov., 1897
[Communicated from abroad by "LA SOCIÉTÉ CH. PREVET ET COMPAGNIE," of
48 Rue des Petites Ecuries Paris in the Republic of France Manufacturers.]
Improvements in and relating to Filtering Apparatus.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, do hereby declare the
nature of this invention to be as follows:-
This invention relates to so-called economic filters and consists of an improved
filtering arrangement of this class, characterized by a peculiar combination of
the parts of which it is composed.
The novel filtering arrangement will be best understood by the perusal of the
following description:
The filter proper which is adapted for filtering inwards, from without, consists
of two shells of unsized filtering paper, cut out to the required shape and stamped.
Preferably, the paper employed for the purpose is covered with canvas, so that
the outer surface of the shells is protected from any abrasion, while the paper
is prevented from becoming loose as a result of a shrinkage caused by its being
immersed in water.
Or each shell may be formed of a number of superposed sheets, the number
of which may vary according to the pressure to be sustained; by which means
there will be brought about a number of successive filtering operations, or stages,
each filtering part being perfectly homogeneous.
In this arrangement the shells are obtained by the superposition of a number
of ordinary paper, cut out to the desired shape all at one stroke, and unprovided
with any sizing.
Between the two shells of filtering material there is interposed a lens shaped
piece forming a chamber for the reception of the filtered fluid.
This lens shaped piece may be made of metal and perforated in which case it
should be fitted with a jet or branch tube, to which may be fitted in its turn an
Indiarubber pipe of any convenient length.
Or the lens shaped piece may be constructed of some porous material, such
as stoneware or, preferably, carbon.
In this case the lens shaped piece is provided with an inner recess, which
is adapted to receive a perforated tube terminating in a nozzle or connecting
tube.
The tube does not extend down to the bottom of the said recess but leaves a
free space or empty chamber for the filtered fluid to collect in, so that it may
subsequently be discharged through the aforesaid tube.
The fluid passing through the carbon filter has already been filtered through
the paper; and, inasmuch as the shells, or the several sheets of which they are
made up, may be changed at will, it follows that the carbon is in no case liable
to contamination, and retains its clarifying properties unimpaired.

page_text: The filtering shells and the internal receptacle are joined together by means
of two separate flat rings and by closing devices, such as the clasps, adapted to
the retain all parts in position. The perfect tightness of the joint is ensured by
the action of moisture, which causes the edges of the filtering material to swell
and thus to be tightly compressed within the metal fittings.
The filter thus constructed forms a perfect portable or pocket filter, suitabie
for troopers, sportsmen, tourists, explorers and the like. It may, for this pur-
pose, be provided with a cork-plate, forming a float and enabling it to be main-
tained above the mud or weeds met with in water-courses or marshes.
These filtering shells might, however, be made of any suitable material other
than paper; for, inasmuch as the invention herein described only relates to the
combination and arrangement of the parts of the improved filter, any really
effective filtering material may be employed in the construction of the same
without departing from the principle of the invention.
If desired, the shells of our filter may be covered with, or enclosed in, a wire-
gauze or perforated, stamped or other sheet-metal casing. The interior of the
lens shaped receptacle may be lined with granulated carbon, so as to clarify
more particularly "chromated water," or water containing salts of chrome.
Besides, in some cases, there may be inserted into the thickness of the shells a
sheet of carbon paper enclosed between two sheets of white paper.
The arrangement iust described constitutes one of the filtering cells or
"elements," by connecting which-in various ways-into groups or series, filtering
plant for filtering on a large scale is obtained.
In one arrangement, a number of superposed elements may branch off from a
vertical collector inside a cylindrical receiver filled with water to be filtered.
This receiver is provided with a water-inlet pipe and a discharge pipe.
In another arrangement the cells may be mounted vertically upon an annular
collector, fitted with a transverse tube, whereon is mounted the filtered-water-
discharge pipe. This arrangement comprises a pipe, for the admission of water
into the receiver, and another pipe, for the discharge of such water.
In another arrangement a cell or element is erected vertically in a receiver
which secured to a discharge-tap. This apparatus receives the fluid to be
filtered from the discharge-tap, while the filtered fluid is discharged through a
nozzle or spout located at the bottom of the said receiver. The object of this
arrangement is to obtain a series of successive filtering stages, before the liquid
-which is thus filtered several times over-is eventually received in the collecting
vessel, which may be a cask, barrel or the like. It will readily be understood
that such an arrangement as this will, in the end, yield perfectly pure water.
And it will further be understood that the details of construction, materials,
dimensions and methods of arrangement of the cells or elements, in sets, may
vary, without in any way affecting the principle of the invention.
Dated this 14th day of November 1806
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in and relating to Filtering Apparatus.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45 Southampton Buildings, in the County of Middlesex, 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 so-called "economie " filters and consists of an improved

page_text: от as crass, characterized by a peculiar combination of
the parts of which it is composed.
The novel filtering arrangement will be best understood by the perusal of the
following description with reference to the accompanying drawings in which
Figure 1 is a plan view of the improved filter.
Figure 2 is a section thereof, taken along its diameter.
Figure 3 is a vertical section showing a series of the constituent parts or
"elements" of the improved filtering arrangement, arranged horizontally within
a cylindrical chamber.
Figure 4 is a section of filtering "elements" erected vertically around a
"crown" or ring.
Figure 5 is a plan-view of the arrangement just mentioned, the casing being
in section.
Figure 6 shows one of the improved filtering "elements" as applied to a tap.
Figure 7 shows a number of filtering "elements," (cells or receivers) in a
"cascade-like" arrangement, or in alternate superposition.
Figure 8 represents the improved filter fitted with a cork plate forming a
float.
Figure 9 is a detached view of the lens-shaped metal-receiver enclosed within
the improved filter; and
Figure 10 is a section illustrating the arrangement of a carbon-receiver.
In all the figures like letters of reference correspond to similar parts:-
The filter proper, which is adapted for filtering inwards, from without, consists
of two shells, a Figures 1 and 2 of unsized filtering paper, cut out to the required
shape and stamped. Preferably, the paper employed for the purpose is covered
with canvas, so that the outer surface of the shells is protected from any abra-
sion, while the paper is prevented from becoming loose as a result of a shrinkage
caused by its being immersed in water.
Or each shell may be formed of a number of superposed sheets, the number of
which may vary according to the pressure to be sustained; by which means
there will be brought about a number of successive filtering operations or stages,
each filtering part being perfectly homogeneous.
In this arrangement the shells are obtained by the superposition of a number
of ordinary paper, cut out to the desired shape all at one stroke, and unprovided
with any sizing.
Between the two shells of filtering material there is interposed a lens shaped
chamber b for the reception of the filtered fluid.
This lens shaped chamber or piece may be made of metal and perforated, as
illustrated in Figures 2 and 9; in which case it should be fitted with a nozzle c,
to which may be fitted in its turn an India-rubber pipe of any convenient length.
Or the lens shaped piece b may be constructed of some porous material, such as
stoneware, or, preferably, carbon, as shown in Figure 10.
In this case the lens shaped piece is provided with an inner recess, which is
adapted to receive a perforated tube c¹ terminating in a nozzle or connecting
tube .
The tube does not extend down to the bottom of the said recess but leaves a
free space or empty chamber for the filtered fluid to collect in, so that it may
subsequently be discharged through the aforesaid tube c¹.
The fluid passing through the carbon filter has already been filtered through
the paner; and, inasmuch as the shells, or the several sheets of which they are
made up, may be changed at will, it follows that the carbon is in no case liable
to contamination, and retains its clarifying properties unimpaired.
The filtering shells and the internal receptacle are joined together by means
of two separate flat rings e Figures 1 and 2 and by closing devices, such as the
clasps f, adapted to the retain all parts in position. The perfect tightness of
the joint is ensured by the action of moisture, which causes the edges of the

page_text: filtering material to swell and thus to be tightly compressed within the metal
fittings.
The filter thus constructed forms a perfect portable or pocket filter, suitable
for troopers, sportsmen, tourists, explorers and the like. It may, for this pur-
pose, be provided with a cork-plate L Figure 8, forming a float and enabling
it to be kept above the mud or weeds met with in water-courses or marshes.
These filtering shells might, however, be made of any suitable material other
than paper; for, inasmuch as the invention herein described only relates to
the combination and arrangement of the parts of the improved filter, any really
effective filtering material may be employed in the construction of the same
without departing from the principle of the invention.
If desired, the shells of our filter may be covered with, or enclosed in, a wire-
gauze or perforated, stamped or other sheet-metal casing. The interior of the
lens shaped receptacle b may be lined with granulated carbon, so as to clarify
more particularly "chromated water" or water containing salts of chrome.
Besides, in some cases, there may be inserted into the thickness of the shells a
sheet of carbon paper enclosed between two sheets of white paper.
The arrangement just described constitutes one of the filtering cells or
"elements," by connecting which-in various ways into groups or series,
filtering plant for filtering on a large scale is obtained.
In Figures 3 to 7 of the drawings are shown by way of illustration some
methods of grouping the improved filtering elements or cells.
In Figure 3, a number of superposed elements a branch off from a vertical
collector inside a cylindrical receiver h filled with water to be filtered. This
receiver is provided with a water-inlet pipe and a discharge pipe.
In Figures 4 and 5 the cells a are mounted vertically upon annular collector g
fitted with a transverse tube k, wheron is mounted the filtered-water-discharge
pipe. This arrangement comprises a pipe i, for the admission of water into
the receiver, and another pipe j, for the discharge of such water.
In Figure 6 is shown a cell or element a erected vertically in a receiver m,
secured to a discharge-tap n. This apparatus receives the fluid to be filtered
from the discharge-tap n, while the filtered fluid is discharged through a nozzle
or spout o located at the bottom of the said receiver.
In Figure 7 several elements a are shown arranged in cascade or alternate
superposition and terminating in a receptacle P. The object of this arrangement
is to obtain a series of successive filtering stages, before the liquid-which is thus
filtered several times over-is eventually received in the collecting vessel p, which
may be a cask, barrel or the like. It will be readily understood that such an
arrangement as this will, in the end, yield perfectly pure water.
And it will further be understood that the details of construction, material,
dimensions and methods of arrangement of the cell or elements, in sets, may
vary, without in any way affecting the principle of the invention.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated
to me by my foreign correspondents, I declare that what I claim is:-
1. The economic filtering arrangement constituted by the juxtaposition of two
filtering shells, within which there is located a lens, made either of perforated
metal or of porous material preferably carbon, and forming a chamber or vessel
for the reception of the filtered liquid; it being provided with a nozzle, onto
which is fitted an India-rubber pipe; the two outer shells being joined by means
of two separate rings c, retained by clasps f, as described with reference to the
accompanying drawings.
2. In the filtering arrangement above referred to, the peculiar construction of
the shells consisting of a number of ordinary unsized sheets of paper, which, on
being superposed, are stamped all together into the desired shape.

page_text: 3. In the filtering arrangement hereinabove claimed, the construction of a
carbon receptacle in lenticular shape, within which is provided a recess in which
engages a perforated tube terminating in a spout or nozzle.
4. The various methods of fitting the filtering arrangement hereinabove
claimed.
All substantially as and for the purpose specified and as illustrated in the
accompanying drawings.
Dated this 23rd day of July 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.