Improvements in Water Filters.
Year: 1897

page_text: Date of Application, 29th Apr., 1897
Complete Specification Left, 29th Jan., 1898-Accepted, 5th Mar., 1898
Improvements in Water Filters.
We, WILLIAM RAILTON, of 344, Walton Breck Road, Anfield, Liverpool, in
the County of Lancaster, and RICHARD CAMPBELL, of 21, Monastery Road,
Liverpool, aforesaid, Engineer, do hereby declare the nature of this invention to
be as follows:
-
This invention relates to apparatus for filtering and purifying water for feed-
ing steam boilers and other purposes. It is designed to provide a large filtering
area, while not increasing the space taken up by the apparatus.
In carrying our invention into effect, we form the filter with a suitable chest
or casing having an inlet for the unpurified water, and an outlet for the purified
water, and we provide in the chest in the path of the water the filtering and
purifying surfaces which are of such a nature that their area is very much greater
than an ordinary flat surface would be. These filtering surfaces are formed of
perforated gratings and are of zigzag or winding form so that the superficial area
thereof shall be much greater than the transverse or longitudinal area of the
chest in which they are mounted. They are by preference so arranged as to form
a winding conduit or channel communicating directly at one end with the water
outlet aforesaid, the walls of said conduit being perforated gratings
and covered on the outside with a filtering medium such as flannel,
so that the water may percolate through the flannel and the perforated gratings
into the conduit and so to the outlet at one end. The conduit may be made in
sections jointed or hinged together at the bends, so that when removed from the
chest the sections can be straightened out to receive the flannels or other filtering
media, which may be made in the form of a bag or bags so as to slip over the
outside of and completely cover the gratings from end to end. This being
effected the conduits are closed together, so that each section shall lie approxi-
mately parallel to its adjacent section with a suitable space between to allow a
free and unimpeded surface for the water to have access to, the filtering bag con-
forming to the winding or zigzag configuration of the respective sections, and
secured thereto so that it cannot come off. The lower portion of the filter chest
is constructed to form a dirt collector, having a drain cock for enabling the
impurities collecting in the chest to be ejected. The filtering surfaces are sup-
ported in the chest in such a manner that the feed water entering the chest by
the inlet pipe has to flow through the flannels or filtering media and into the zig-
zag conduit on its way to the outlet pipe.
The mode of action is as follows:
The water under pressure entering through the inlet pipe percolates through
the perforations into the conduit, leaving the dirt, grease and other impurities
behind on the filtering medium, and the purified water is delivered through the
outlet pipe, the construction being such that no water can penetrate into the outlet
pipe of the filter from the inlet, except by first passing through the filtering
Hannels and perforated grids.
We have described the above way in which our invention may be carried into
effect, but it will be obvious that the perforated conduit may be made in one piece
throughout or in any number of suitable sections, and we do not confine our-

page_text: selves to hinging the sections at each bend as they may be hinged at alternate
bends or otherwise. Furthermore the method of using the filter may of course
be reversed, and purified water lead directly into the interior of the conduit and
out through the gratings and flannels into the chest.
Dated this 28th day of April 1807
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Patent Agents for the Applicants.
Improvements in Water Filters.
We, WILLIAM RAILTON, of 344, Walton Breck Road, Anfield, Liverpool, in
the County of Lancaster, and RICHARD CAMPBELL, of 21, Monastery Road,
Liverpool, aforesaid, Engineers, 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 apparatus for filtering and purifying water for feeding
steam boilers and other purposes. It is designed to provide a large filtering area,
while not increasing the space taken up by the apparatus.
The invention will be understood from the following description reference being
had to the accompanying drawings, in which it is shown applied to marine feed
water filters.
Figure 1 is a sectional elevation of the filter;
Figure 2 a vertical cross section;
Figure 3 a sectional plan;
Figure 4 a cross sectional detail view showing part of the perforated conduit
with the hinge partly opened;
Figure 5 a face elevation of one of the sections of the conduit separated from
the others.
Figure 6 detail view of the perforated conduit showing the hinges closed.
Referring to these figures: we form the filter with a suitable chest or casing A
having an inlet B for the unpurified water, and an outlet C for the
purified water, and we provide in the chest in the path of the water
an internal chamber D with filtering and purifying surfaces which are
of such a nature that their area is very much greater than an ordinary
flat surface would be. These filtering surfaces are formed of perforated gratings
and are of zigzag or winding form so that the superficial area thereof shall be
much greater than the transverse or longitudinal area of the chest A in which they
are mounted. They are by preference so arranged as to form a winding conduit or
channel E which is flattened or elongated in cross section, communicating
directly at one end F with the water outlet C aforesaid, the walls of said conduit E
being perforated gratings F1 and covered on the outside with a filtering medium G
such as flannel, so that the water may percolate through the flannel G and the
perforated gratings F into the conduit E and so to the outlet F at one end. The
conduit E may be made in sections jointed or hinged together at the bends H,
so that when removed from the chest A the sections can be straightened out to
receive the flannels or other filtering media G, which may be made in the form
of a bag or bags so as to slip over the outside of and completely cover the gratings
from end to end. This being effected the conduits are closed together, so that
each section shall lie approximately parallel to its adjacent section with a suitable
space between to allow a free and unimpeded surface for the water to have access
to, the filtering bag conforming to the winding or zigzag configuration of the
respective sections, and secured thereto so that it cannot come off. I are stay bolts

page_text: for holding the conduits in their winding conformation so that they cannot
separate. The lower portion a of the filter chest A is constructed to form a dirt
collector, having a drain cock for enabling the impurities collecting in the chest
to be ejected.
C
J is a removable door at one side of the chest A, K twin valve with twin seating
controlling both the inlet pipe B and branch L, M a valve for controlling the
outet pipe C. N is a spring mounted between the walls of the chest A and
internal chamber D adapted to keep the latter pressed against the seating () so
that the water cannot penetrate into the delivery side F of the filter without
penetrating the filtering flannels. The filtering chamber is supported in the chest
in the manner shown so that the feed water entering the chest A by the inlet pipe
has to flow through the flannels or filtering media and into the zigzag conduit
on its way to the outlet pipe.
The mode of action is as follows:-
The water under pressure entering through the inlet pipe B percolates through
the perforations into the conduit E, leaving the dirt, grease and other impurities
behind on the filtering medium G, and the purified water is delivered through
the outlet pipe C, the construction being such that no water can penetrate into
the outlet pipe C of the filter from the inlet B, except by first passing through
the filtering flannels and perforated grids.
We have described the above way in which our invention may be carried into
effect, but it will be obvious that the perforated conduit may be made in one piece.
throughout or in any number of suitable sections, and we do not confine our-.
selves to hinging the sections at each bend as they may be hinged at alternate.
bends or otherwise. Furthermore the method of using the filter may of course.
be reversed, and water lead directly into the interior of the conduit, and out
through the gratings and flannels into the chest.
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 improvement in apparatus for filtering or purifying water for feeding
steam boilers and other purposes, which consists in forming the filtering or purify-
ing surfaces of a perforated winding or zigzag conduit or channel constructed in:
one piece or in sections jointed or hinged together.
2. A filter having a containing chest provided with entrance and exit valves,
and an internal chamber formed of a series of flannel covered winding or zigzag-
conduits of flattened or elongated shape in cross section, with spaces of suitable.
width between, substantially as and for the purposes described.
3. The combination with an external filter chest, of an internal chamber whose
filtering surface is formed of a perforated winding conduit built up in sections
and hinged together at the bends, filtering flannels covering each section, stays
bolts for bolting or holding the sections of the conduits in their winding con-
formation, a seating on the inside of the external chest, and means for keeping the
internal chamber pressed against the said seating, whereby the water cannot
pass to the delivery side of the filter without percolating through the filtering
flannels substantially as described.
1000
Dated
WM. P. THOMPSON & Co.,
Patent Agents, Of Liverpool, Manchester, Birmingham & London.