An Improved Filtering Apparatus.
Year: 1892

page_text: Date of Application, 2nd July, 1892
Comlete Specification Left, 1st Apr., 1893-Accepted, 13th May, 1893
PROVISIONAL SPECIFICA LION.
An Improved Filtering Apparatus.
I ALFRED SOUTHWELL, of 9 Union Road, Northam, Southampton, in the
County of Hampshire, Jobbing Builder, do hereby declare the nature of this
invention to be as follows:-
My invention relates to filtering apparatus and comprises various improvements
hereinafter described.
The main object of my said invention is to provide a simple, cheap, and
durable filtering apparatus for use more especially on service, and daily supply
pipes, and steam boiler feed water inlet pipes.
According to one form or modification of my invention my said apparatus
consists of a cylindrical case or chamber in two parts connected at about the
middle of its length by means of a union or back nut, the ends of the chamber
being in the form of screw caps; adjacent to one end of the chamber 1 fit-
convenient for removal and renewal at will-a block of chalk stone, or a carbon
block, or any suitable solid filtering medium. The position of the block is arranged
so as to leave a space or recess, of any, desired size, between it and this end of the
chamber, in the centre of the screw cap at this end I suitably fit and secure a short
piece of pipe convenient for connection to the main service, or supply pipe, and in
the screw cap at the opposite end of the chamber I fit and secure another piece of
short pipe convenient for connection to the supply pipe from which the filtered
water is drawn by means of an ordinary tap the pipe connections are made water-
tight where passing through the cap ends of the chamber. I further fit a tap or
cock upon
the screw cap nearest the end in which the filtering medium is fitted such
tap being arranged to communicate with the aforesaid recess at this end of the
chamber. The apparatus described is then suitably adjusted upon the service or
supply pipe, between the inlet and daily supply taps. Taking it that the water
service is turned on at the main the water flows into the recess formed at one end
of the chamber, and from thence through the filtering medium into the main
chamber, being then delivered from same as desired (by turning on the supply cock)
in a filtered condition; any deposit in the before mentioned recess at the one end of
the apparatus, between the cap and filter, can be washed out of same-with force
due to the water pressure-by turning on the tap communicating with the aforesaid
recess, thus it is not necessary to take the apparatus apart to clean it; should it be
required however to take it apart for any reason-such as for instance to renew
the filtering medium-it may be done by simply unscrewing the back, or union nut,
or either of the caps can be unscrewed at pleasure, by means of which the entire
inside of the apparatus is opened up.
Sometimes may if preferred arrange for one or both of the chamber ends to be
fixtures upon same, instead of being in the form of screw caps, or the chamber may
be formed of two pieces of cylindrical tube with solid ends, the apparatus being in
other respects made and fitted as herein before described or similar thereto.
It is obvious my improved apparatus may be fitted to any service pipes, for
instance to pipes supplying water from tanks on board ship, or elsewhere, but
preferably the water should pass into my apparatus with moderate force.
Dated this 1st day of July 1892.
HERBERT P. BLAKE, M.I.N.A.,
70, High Street, Southampton, Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Filtering Apparatus.
I, ALFRED SOUTHWELL of 9 Union Road, Northam, Southampton, in the
County of Hampshire, Jobbing Builder, 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:-
My invention relates to filtering apparatus and comprises various improvements
hereinafter described.
The main object of my said invention is to provide a simple, cheap and durable
filtering apparatus, for use more especially on water works service pipes and steam
boiler feed water supply pipes.
In order that my invention may be fully understood, I will proceed to describe
same with reference to the accompanying drawings in which :-
Fig. 1. is a front horizontal elevation.
Fig. 2. a plan on top of Fig. 1.
Fig. 3. a sectional plan on line a, a, and
Fig. 4. a cross section on line b, b.
:-
Similar letters refer to corresponding parts in the several figures.
According to one form or modification of my invention the said apparatus consists
of a metal case, or box made in two parts B, and B', connected together by a union
nut C, the joint being made watertight by means of a flexible washer D, or in
other suitable manner, two compartments or chambers E, E, are formed in the case
by fitting in the part B, a block d, consisting of any suitable filtering medium, but
preferably of teak wood, the said block is first secured in a metal ring ', screw-
threaded on its outer circumference, and the ring with the attached block is screwed
into the part B, close up against the circular leather washer e, thus forming a
watertight joint at same, at the centre of the outer end of the part B, I form, or
suitably fix, upon same, a short straight nozzle e convenient for connection to the
service or supply pipe. At the centre of the outer end of the part B¹, I suitably
affix a short bent nozzle f, which I prefer to make convenient for attachment and
removal, and to which a tap is fitted at /, the nozzle f, is made watertight where
connected to the part B1, I further provide a nozzle g, upon the part B, into which
I fit a tap at g¹. The apparatus described is adjusted and fixed at i, upon the end
of a service pipe.
Taking it that the water service is turned on it flows first into the chamber E
and from thence through the filtering block d into the chamber E¹ from which it is
delivered in a filtered condition as required by turning on the tap fitted at fl.
Any deposit accumulating in the chamber E, is washed out of same with force-
due to the water pressure at the main-when turning on the tap fitted at g', thus it
is not necessary to take the apparatus apart to clean it, but should it be required
however to do so for any reason-such as for instance to renew the filtering block-
it may be readily done by unscrewing the back nut C; and then the ring con-
taining the filtering block , can be unscrewed from the chamber E, and the block
removed from same and replaced by another.
The tap fitted at g', will be the one ordinarily used for daily supply purposes,
for water not required in a filtered condition, it is therefore obvious that the
chamber E will be constantly washed out..
The apparatus may be supported in position by connecting it to a wall or else-
where by fastenings passing through the lugs h, h, into the former. It is obvious
my improved apparatus may be fitted to any service pipes other than from water-
works mains, for instance to pipes supplying water from tanks on board ship, or
elsewhere, or to steam boiler feed water inlet pipes, the speed of delivery of filtered
water being in proportion to the pressure behind the filtering block; and it is also
considered that the apparatus may be used for filtering other liquids than water.

page_text: Many modifications may be made in the details of the apparatus without
departing from the distinctive features of my invention, for instance, the form of
the case or box may be other than that shewn.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
:-
1st. The filtering apparatus described, comprising the parts B, and B', forming
when connected together with the filtering block d-the latter consisting preferably
of teak wood-fitted in place, a case or box containing two chambers E, and E',
and the other parts of my invention all constructed, and combined substantially as
described with reference to the accompanying drawings and operated as, and for
the purpose specified.
2nd. In a filtering apparatus the herein described method of utilising the water
pressure behind the filtering block d, for washing out through the ordinary daily
supply tap fitted at g', any deposit that accumulates in the chamber E, substantially
as described.
Dated this 30th day of March 1893.
HERBERT P. BLAKE, M.I.N.A.,
70, High Street, Southampton, Agent for the Applicant.