Improvements in or relating to Filter Pumps.
Year: 1892

page_text: Date of Application, 27th Dec., 1892
Complete Specification Left, 27th Sept., 1893-Accepted, 28th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in or relating to Filter Pumps.
I, WILLIAM EDWARD CADDELL of 70 Mark Lane in the City of London,
Merchant, do hereby declare the nature of this invention to be as follows:-
The object of the present invention is to combine a pump and filter in one
apparatus and to so construct it that either filtered or unfiltered water may be
discharged at will. The pump may be provided with the usual suction pipe,
valves, bucket, pump rod and handle and the casing may be used as an air chamber.
The interior of the pump is fitted with any suitable filtering medium but I prefer
to employ one or more, conveniently seven cylinders or blocks of kieselguhr (fossil
earth) used by the Berkefeld Filter Co.
When filtered water is required the cock of an outlet pipe may be closed and
water is pumped up to the filter chamber and permeating the kieselguhr may enter
a collecting chamber whence it is discharged through an ordinary spout. I prefer
to arrange the filtering cylinders round the pump rod and attached to this pump
rod and moving with it are wires or their equivalent carrying one or more brushes
or other cleansing devices to each filtering cylinder according to requirement. The
brushes are preferably flexible to conform to and press closely against the outer
surface of the cylinders; they are reciprocated by the pump rod and wipe off the
dirt or other impurity deposited by the water in passing through the filter.
When unfiltered water is required the cock of the outlet pipe can be opened and
the water pumped into the filter chamber flows through one or more pipes and
escapes through the collecting chamber and spout without passing through the
filtering medium.
A by-pass or other pipe or passage may be provided to drain off the water in
frosty weather, and the apparatus may if desired be packed lagged or may be
provided with a double casing or otherwise protected so as to prevent freezing.
Although this invention has been described in relation to a reciprocating pump,
it will be understood that it is also applicable to rotary and other pumps.
Dated this 27th day of December 1892.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Filter Pumps.
I, WILLIAM EDWARD CADDELL of 70 Mark Lane, in the City of London,
Merchant, 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 the present invention is to combine a pump and filter in one
apparatus and to so construct it that either filtered or unfiltered water may be
discharged at will. The pump may be provided with the usual suction pipe, valves,
bucket, pump rod and handle and the casing may be used as an air chamber. The
interior of the pump is fitted with any suitable filtering medium but I prefer to
employ one or more, conveniently seven cylinders or blocks of kieselguhr (fossil
earth) as used by the Berkefeld Filter Company.
When filtered water is required the cock of an outlet pipe may be closed and
water is pumped up to the filter chamber and permeating the kieselguhr may enter
a collecting chamber whence it is discharged through an ordinary spout. I prefer

page_text: to arrange the filtering cylinders round the pump rod and attached to this pump
rod and moving with it are wires or their equivalent carrying one or more brushes
or other cleansing devices to each filtering cylinder according to requirement. The
brushes are preferably flexible to conform to and press closely against the outer
surface of the cylinders; they are reciprocated by the pump rod and wipe off the.
dirt or other impurity deposited by the water in passing through the filter.
When unfiltered water is required the cock of the outlet pipe can be opened and
the water pumped into the filter chamber flows through one or more pipes and
escapes through the collecting chamber and spout without passing through the
filtering medium.
A by-pass or other pipe or passage may be provided to drain off the water in
frosty weather, and the apparatus may if desired be packed, lagged, or may be
provided with a double casing or otherwise protected so as to prevent freezing.
Although this invention has been described in relation to a reciprocating pump,
it will be understood that it is also applicable to rotary and other pumps with such
modifications as may be necessary to adapt it to the particular pump or object in
view.
The accompanying drawing represents a vertical section through a pump of the
reciprocating kind commonly used in country villages and farms.
A represents the casing or body of the pump; this is hollow as shown and the
upper portion or chamber B above the circular diaphragm C is closed in in a
water-tight manner, the pump rod D passing through a stuffing box A³ upon the
cover A; the pump rod may be operated by a handle E in the usual manner.
L
In the chamber B the filtering material in this instance shown is a number of
kieselguhr cylinders F having nozzles F' which pass through the diaphragm C so
as to deliver the filtered water into the chamber G formed between the diaphragm C
and a lower inclined diaphragm H. I is a tap or valve fixed to the diaphragm C
and communicating with the interior of the chamber B; this tap may be opened or
closed by a handle J outside the pump so that when open the water delivered by
the pump K into the chamber B will pass through the tap I into the spout
without passing through the filters as it will naturally flow more freely through
the direct opening. The passage M communicates freely with both the pump
barrel K and the chamber B. When it is desired to obtain filtered water the tap
is closed by turning the handle J and the water delivered by the pump into the
chamber B. passes through the filter cylinders or blocks F and so by the nozzles F
into the chamber G the spout L then delivering filtered water.
As a convenient means of cleaning the outsides of the filtering cylinders F the
pump rod D carries arms or brackets N secured upon it and encircling each of
the filter cylinders F with brushes or equivalent scrubbing devices which rise and
fall with the pump rod thus removing impurities which may have collected upon
the cylinders.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, 1 declare that what I
claim is :-
:-
1. A combined pump and filter.
2. The combination in the same case or body of a pump and a filter substantially
as described.
3. The combination in the same case or body of a pump filter and filter cleaning
device substantially as described.
4. The combination in the same case or body of a pump and filter so arranged
that either filtered or unfiltered water will be delivered when the pump is
worked.
5. The combination in the same shell or body of a pump delivering into a filter
chamber such as B a filter delivering into a second chamber open to the spout, and
a tap or valve adapted to connect or disconnect the two chambers substantially as
described.

page_text: 6. The combination with an ordinary pump K¹ of an enclosed filter chamber
such as B provided with filtering blocks or equivalent such as F a second chamber
such as G into which the filters deliver and a cock or valve such as I operated
from outside the casing substantially as described and illustrated in the accom-
panying drawing.
7. In a pump the combination with the pump rod of brushes or scrapers such
as N reciprocating with the rod and adapted to brush or scrape the filters
substantially as described and illustrated in the accompanying drawing.
Dated this 19th day of September 1893.
W. E. CADDELL.
W. P. Thompson & Boult,
Agents for the Applicant.