An Improved Apparatus for Filtering Water.
Year: 1889

page_text: Date of Application, 5th July, 1889
Complete Specification Left, 3rd Apr., 1890-Accepted, 7th June, 1890
PROVISIONAL SPECIFICATION.
An Improved Apparatus for Filtering Water..
JOHN FREDERICK FOGERTY Civil Engineer and Architect of Erindale Wrockwardine
Wood near Wellington Shropshire, do hereby declare the nature of this invention to
be as follows :-
The form of the filter consists of a glazed earthenware vessel of a vertical cylindrical
shape, open at the top & tapered at bottom, where is an outlet fitted with a tap.
The water enters by means of another tap also at the bottom of the filter & must have
a considerable force or head of water at this point: it then rises through the filter
through successive layers of charcoal & silver sand pressed between porous earthen-
ware bricks, & is collected at the top of the filter. It is then drawn off as required
by an outlet tap, & the filter is also provided with an overflow. The supply is
regulated at entrance by a regulating tap. The points claimed are, the water is kept
constantly running. The clearing is performed by simply turning a tap. Dirty
water is almost as easily filtered as moderatly clean water. The water is filtered
slowly not rapidly.
Dated this Fourth day of July 1889.
J. FRED. FOGERTY,
Erindale, Wrockwardine Wood, Wellington, Salop.
COMPLETE SPECIFICATION.
An Improved Apparatus for Filtering Water.
JOHN FREDERICK FOGERTY Erindale Wrockwardine Wood Wellington Salop
Architect 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 consists in an improved arrangement of filters for filtering water
and the like and instead of supplying the water to the filter from the top and allowing
the water to percolate through the filtering beds and thence to the bottom of the
receptacle I so arrange my apparatus as to supply the water to be filtered from the
bottom of the receptacle and as the water rises therein it is forced through the suit-
ably arranged beds of filtering material which are placed at suitable distances in the
receptacle. In order to fully describe my invention I now refer to the annexed
drawings.
or cover.
Fig. 1 shows vertical section of a filter arranged according to this invention. a top
b upper chamber containing the filtered water which is drawn off by cock
or tap e. f overflow g is a porous earthenware cover for chamber containing the
upper bed of filtering material h. i the like for chamber j. k is a similar cover.
7 is the supply pipe and tap connected. m is screw or tap at bottom of filter for
access when cleaning the interior.
It will be clearly seen that the water enters from the underside of the filtering bed
and is filtered during its upward course, and is drawn off at the top. What is known
as forced or gravity filtration is not effectual inasmuch as any force exerted to propel
the water through a certain body of filtration material a part of that force must act
upon the animalculæ or foreign, or organic bodies in the water and therefore perfect
filtration is not obtained as the foreign matter is forced through with the water, but
as my invention is arranged the impurities in the water will tend to fall to the bottom
of the receptacle and the water which is rising and passing through the filtering beds
is thus relieved of a good deal of work.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is performed I declare that what 1
claim is
(1) In filters the construction, arrangement and combination of the parts as
shewn in the annexed drawings & substantially as described and for the purpose set
forth.
Dated this 3rd day of April 1890.
E. EATON,
Patent Agent, Agent for Applicant.