An Improved Filter and Apparatus Connected therewith.
Year: 1888

page_text: Date of Application, 18th Apr., 1888
Complete Left, 20th June, 1888
Complete Accepted, 20th July, 1888
An Improved Filter and Apparatus Connected therewith.
We ROBERT COOPER, HERBERT FITZROY CLAYTON, and GEORGE HOLDEN HOLDROYD,–
all of Lockwood, Huddersfield in the County of York, Drysaliers, do hereby declaro
the nature of this invention to be as follows:-
Our invention consists in an arrangement of perforated tubes, covered or clothed
with suitable filtering cloth, through which a stream of the water to be filtered is
forced by means of a centrifugal or other suitable form of pump, or by a head of
water.
We are aware that perforated surfaces covered with cloth and other substances have
previously been employed for filtering purposes, but our invention relates to a special
form of such apparatus, which occupies very little space, is rapid in its action, and
in which the filtering tubes and filtering cloth are easily removed for cleansing or
renewal.
To carry out our invention we employ by preference a rectangular tank or cistern,
across which the perforated filtering tubes are supported.
The inlet ends of these filtering tubes are provided with a conical turned nipple at
one end, which fits into a socket fixed at one side of the tank, and connected with the
unfiltered water supply pipe.
The other ends of the filtering tubes are closed, and fit into a socket fixed upon an
adjusting screw which passes through the side of the tank, and is actuated by means
of a hand-wheel.
The filtering tubes are wrapped round and covered with the filtering cloth, which is
secured in position by bands or straps, the conical nipple of the filtering tube is then
placed in the socket of the supply pipe and the closed end is placed in the socket of
the adjusting screw.

page_text: A few turns of the hand-wheel force home the conical nipple into the socket
connected with the supply pipe, thereby forming a water tight joint. The centrifugal
pump forces the water through the perforated pipes and their covering of cloth, leaving
the dirt and insoluble impurities inside the filtering cloth, which is removed and replaced
by clean cloth at convenient intervals.
If it is desired to pass the water more than once through the filter, an outlet pipe
from the bottom of the tank is connected with the centrifugal pump, and the water
may thereby be passed any number of times through the filtering apparatus.
While this repeated filtering operation is taking place the supply valve of the unfiltered
water pipe is closed.
Dated this Seventeenth day of April 1888
W. J. BAKER,
2, New Street, Huddersfield,
Agent for the Applicants.

page_text: An Improved Filter and Apparatus Connected therewith.
We ROBERT COOPER, HERBERT FITZROY CLAYTON, and GEORGE HOLDEN HOLDROYD;
all of Lockwood, Huddersfield, in the County of York, Drysalters, 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 :-
Our invention relates to filtering apparatus of that class in which perforated surfaces
covered or clothed with cloth or other filtering media are employed.
The chief objects of our said invention are to provide apparatus of this class which
occupies very little space, which is rapid in its action, and in which the filtering medium
can be easily removed for cleansing or renewal, and to these ends it comprises the
improvements hereinafter described.
In the accompanying drawing,
Figure 1 is a plan of apparatus constructed according to our invention.
Figure 2 is a vertical section of the same on the line x, x; and.
Figure 3 is a sectional view of a detail drawn to an enlarged scale.
a is a tank which, as shown, is of rectangular shape, but-which-may be of any other
desirable shape; and b, b are a series of perforated tubes which are covered with
filtering cloth c wrapped around the said tubes and which are arranged over the said
tank as hereinafter described.
d is the tube through which the liquid to be filtered is introduced into the filtering
tubes, the said tube being provided with a series of nozzles e, e which project through
the wall of the tank, as shown more clearly at f, where one of the filtering tubes is
removed. These nozzles are preferably made tapering, as shown in Figure 3, for a
purpose hereinafter mentioned.
9, 9 are plugs which are carried by screws h, h and provided with hand wheels i, i,
the said plugs being arranged to correspond with the nozzles e, e in the opposite wall
of the tank. These plugs have flanges j, j and are preferably tapered in the same
manner as the nozzles e, e.
k is a centrifugal pump which is adapted to force the liquid into the filtering tubes,
but any other form of pump may be used; and in cases where the liquid has a head the
pump may be dispensed with.
7 is a discharge pipe at the bottom of the tank.
m, m are beads which are formed on the ends of each tube b, and n, n are packing
rings which are placed between the flanges j, j and the tubes at one end, and between
the wall of the tank, or collars o, o on the nozzles e, e, at the other end.
These rings not only ensure the formation of tight joints at the end of the tubes,
but, in conjunction with the beads m, m, prevent the filtering cloth from being cut.
If now liquid is forced through the perforated tubes and the filtering medium it
will be cleansed. If it is desired to pass the liquid through the filter more than once
the pipe is connected with the pump. While this repeated filtering is taking place
the supply of unfiltered liquid is stopped. In some cases may be advisable to place

page_text: clamping rings p, p around the filtering medium, to prevent the same from bulging
outwards under the pressure within the tubes.
The operation of our apparatus is as follows, that is to say :-One or more layers of
cloth or other suitable filtering material is or are wound or wrapped around each
tube b until the filtering medium is of the required thickness, the cloth being of such
width and so wound that it projects a few inches at each end of the tube, the said
projecting ends being turned within the tube as shown in Figure 3. Each tube is
now placed at one end upon a nozzle e and the opposite plug g is forced into the other
end, the tapering surfaces of the nozzle-and plug in conjunction with the elastic packing
rings n n serving to compress the cloth tightly against the beaded ends of the tube to
prevent leakage.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is
1. In filtering apparatus, one or more perforated tubes having a filtering medium
wrapped upon it or them and turned in at the ends, the said tube, or each of the said
tubes where more than one is employed, being carried at one end upon a tapering
nozzle through which the liquid to be filtered is introduced and at the other end upon
a tapering plug, in such a manner that when the said plug is forced into the tube tight
joints will be formed at both ends, substantially as described.
2.In. a. filtering apparatus having perforated tubes covered with filtering cloth
turned in at the ends, forming the said tubes with beaded ends, for the purpose
specified..
3 In a filtering apparatus having perforated tubes covered with filtering cloth
turned within the said tubes and supported by tapering plugs and nozzles, the employ-
ment of elastic packing rings placed between the ends of the tubes and the said plugs
or nozzles to form tight joints and to prevent the cutting of the filtering material,
substantially in the manner described.
4. The improved filtering, apparatus constructed and arranged to operate substantially
as hereinbefore described and illustrated in the accompanying drawing.
1000
W. J. BAKER,
2, New Street, Huddersfield,
Agent for the Applicants.