Improvements in Pressure Filters.
Year: 1891

page_text: Date of Application, 30th Jan., 1891
Complete Specification Left, 1st June, 1891-Accepted, 18th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in Pressure Filters.
We Joss OXLEY of Wombwell in the County of York Mechanical Engineer
and GEORGE SELLARS of the Town and County aforesaid Engineer do hereby
declare the nature of this invention to be as follows:-
This invention relates to those kind of water filters which are arranged to receive
the water direct from the main the water in some cases being under considerable
pressure.
Our improved filter is arranged with a lower metal casting in the form of a
circular box on the underside of which is a projecting portion formed with a
screw thread in order that it may be conveniently screwed to the supply pipe or
a regulating tap. The filter may be fitted upon a table counter or any other
suitable part of a dwelling or other place it merely being necessary to conduct the
supply pipe from the main thereto. The said circular box has a suitable tap
screwed or fitted into its side for the purpose of drawing the filtered water off
when desired and the said circular box is formed with a suitable annular flange at
its upper portion through which pass three or more vertical bolts for the purpose
hereinafter. described. We arrange a glass cylinder the lower end of which is
ground and fits into the circular box aforesaid which latter receives an india rubber
or.other ring in order to form a water tight joint. A ring of suitable metal is
arranged at the top of the glass cylinder and has a recess formed therein within
which a packing washer is placed and against which the ground upper end of the
glass cylinder presses.
.
The said bolts pass through the metal ring the heads of said bolts being counter-
sunk therein in order that the upper surface of the ring may be perfectly smooth.
The screwed end of each bolt passes through the flange of the circular box and
receives a nut at the underside thereof by which means the glass cylinder is firmly
and securely held in position:
The lower end of a vertical pipe is screwed into the centre of the circular box
and extends centrally within the glass cylinder and the said vertical pipe is so
arranged that it conducts the water from the main to the upper portion within the
glass cylinder. A perforated circular plate is placed at the lower end of and
within the glass cylinder and acts as a lid to the circular box. A suitable sponge
is then placed over this lid then a quantity of vegetable or mineral filtering media
and subsequently another sponge is placed over this and then an upper perforated
circular plate-which latter is screwed down by means of our improved perforated
cap which is especially constructed in the shape of a dome and screws upon the end
of the vertical supply pipe within the glass cylinder thus holding the filtering
media in required position and at the necessary compression. By adjusting the
perforated cap the filtering media may be loosened or compressed as desired. A lid
is placed over the upper metal ring and is secured down thereto by means of set
screws a washer of rubber or other like substance being placed between the metal
ring, and the lid in order to form a watertight joint. Where preferred the per-
forated cap may have a spindle or rod connected to it which may extend through
a stuffing box formed in the lid and the top of said rod or spindle may be formed
with a lever or thumb and finger head in order that it may be turned one way or
the other.with ease.
The water passes through the supply pipe or regulating tap up the vertical pipe
within the glass cylinder out of the perforated cap at the top thereof and descends

page_text: through the filtering media into the circular box and may be drawn therefrom as
desired.
Dated this 29th day of January 1891
H. F. BOUGHTON, M. I. Mech. E.,
124, Temple Chambers, London, Parade Chambers, Sheffield, and at Barnsley,
COMPLETE SPECIFICATION.
Improvements in Pressure Filters.
We Joss OXLEY of Wombwell in the County of York Mechanical Engineer
and GEORGE SELLARS of the Town and County aforesaid Engineer 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 those kind of water filters which are arranged to receive
the water direct from the main the water in some cases being under considerable
pressure.
Our invention will be clearly understood by reference to the accompanying sheet
of drawings in which Fig. 1 is a sectional elevation of our improved filter and
Fig. 2 a sectional elevation of a portion thereof illustrating a modification therein.
Like letters of reference designate similar parts in both the views.
Our improved filter is arranged with a lower metal casting C made in the form
of a circular box having on its underside a projecting portion c¹ formed with a
screw thread in order that it may be conveniently screwed to a supply pipe or
regulating pipe N. The circular box C has a suitable tap A screwed or fitted
into its side as shown for the purpose of drawing off the filtered water as required.
The said box C is formed with an annular flange c³ through which passes three or
more vertical bolts B for the purpose hereinafter described.
We arrange a glass cylinder G the lower end of which is ground and fits into
the annular recess formed in the box C the said recess receiving a ring of
india rubber or other packing P for forming a water tight joint. A ring R of
suitable metal is arranged at the top of the glass cylinder G and it has a recess
formed therein within which is placed a washer of rubber or other packing
material W and against which the ground upper end of glass cylinder G
presses.
The vertical bolts B pass also through the metal ring R the heads of said
bolts B being countersunk therein in order that the upper surface of the ring R
may be perfectly smooth. The screwed end of each bolt B passes through the
flange c2 of the circular box C and receives a nut 3 at the underside thereof by
which means the glass cylinder G is firmly gripped or secured between the box C
and ring R.
The lower end of a vertical pipe V is screwed into the centre of the box C. as
shown and extends centrally within the glass cylinder G and the said vertical pipe
is so arranged that it conducts the water from the main or supply cock M to the
upper portion within the glass cylinder G. A perforated circular plate L is placed
at the lower end of and within the glass cylinder G and acts as a lid to the box C.
A suitable sponge or other filtering medium S is covered over said lid or plate L
and on this a quantity of vegetable or mineral filtering medium N and subsequently
another sponge or other filtering medium S' is placed over the media N and then
an upper perforated circular plate L' which latter is screwed down by means of our
improved perforated cap T which is especially constructed on the shape of a dome
and screws upon the end of the pipe V within the glass cylinder G thus holding
the filtering media N and S in required position and at the necessary compression.
By adjusting the perforated cap T the filtering media N and S may be loosened or
compressed as desired.

page_text: A lid Q is placed over the upper metal ring R and is secured down thereto by
means of set screws ² a washer of rubber or other packing substance P¹ is placed
between the ring R and the lid Q in order to form a watertight joint.
Referring to Fig. 2 the perforated cap T has a spindle or rod t connected to or
made with it which extends through a stuffing box g¹ formed in the lid Q and the
top of said spindle t¹ has secured to it a hand wheel H in order that the said spindle
and perforated cap may be turned one way or the other so that the filtering media
may be further compressed or released without the necessity of removing the lid Q.
The water to be filtered passes through the supply pipe or tap M up the vertical
pipe V out of the perforated cap T and descends through the filtering media into
the circular box C and may be drawn therefrom by the tap A as desired.
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. In a pressure filter the combination of a supply pipe V having an adjustable
perforated cap T with a transparent cylinder G and fittings C and R and cap Q
substantially as described.
2. In a pressure filter constructed with a supply pipe V passing through filtering
media the use of a perforated cap T adjustable by means of a spindle passing
through a stuffing box formed in a lid or cover R substantially as described.
Dated this 29th day of May 1891
H. F. BOUGHTON, M. I. Mech. E.,
Sheffield, London, and Barnsley, Agent.