Improvements connected with Water Filters.
Year: 1891

page_text: Date of Application, 27th Nov., 1891
Complete Specification Left 3rd June 1892-Accented
13th And 1802
PROVISIONAL SPECIFICATION.
Improvements connected with Water Filters.
WILLIAM MARRIOTT Chemist 116 Halifax Old Road Huddersfield, do hereby
declare the nature of this invention to be as follows:-
The ordinary earthenware filters are generally constructed in three chambers or
divisions: the upper division holding the water to be filtered, the middle the
filtering material, & the lower retaining the filtered water. These filters are very
slow in action, require constant attention to keep them supplied with water;
they are also very liable to become foul, if any organic matter is introduced into
the water supplied, besides being very difficult to cleanse.
The object of my invention is to overcome these difficulties, & for that purpose
I connect a special apparatus with the water supply.
This apparatus is fully explained in the drawing No. 1. The cock A is connected
with the water supply, & is made of such strength as to resist ordinary pressure.
Cock B supplies water to the filter. Cock C. is an exhaust through which the
water in the filter can at any time be withdrawn, thus washing out the filter.
Drawing No. 2 shews the filter with which the special apparatus is connected
at E, & by upward filtration through D passes out at F. The filter may be
charged with any suitable material, but I prefer native magnetic oxide of iron
ground to a coarse powder.
Dated this 7th day of January 1892
WILLIAM MARRIOTT.
COMPLETE SPECIFICATION.
Improvements connected with Water Filters.
WILLIAM MARRIOTT 116 Halifax Old Road Huddersfield, Manufacturing
Chemist, 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:-
And I will now explain the construction & action of my improvements connected
with water filters.
The ordinary earthenware filters are generally constructed in three chambers or
divisions. The upper division holds the water to be filtered; the middle division
contains the filtering material; & the bottom division retains the filtered.
These filters are very slow in action, & the water in the upper division is liable
to become foul, if any organic matter is introduced along with the water supplied
to the filter; & if at any time through neglect all the water is drawn off, the air
with all its floating particles enters the filter, & if growth commences it is almost
impossible to clean out thoroughly such filters.
To avoid these evils in filtering water for domestic purposes, I devise a special
apparatus which I connect with the water service, & which apparatus not only acts
as a supply of water to the filter, but by opening a cock exhausts the water from
the filter, thus, at any time cleansing out the water.
The drawing deposited with the Provisional Specification explains the action of
this apparatus. In No. 1 the cock A. is connected with the water supply, & is made
of such strength as to resist ordinary pressure. The branch cock B supplies the
water to the filter, & can be so regulated as to supply the quantity of water
required. Cock C is an exhaust by opening which, along with cocks A & B all
the water can be drawn out of the filter, thus at any time washing out the filter.

page_text: Drawing No. 2 shews the filter.with which the special apparatus is connected by
a pipe at E & thence upward through the filtering material contained in D, & is
finally run out by pipe F.
These filters, may be charged with any suitable material; but, I prefer, & use
for that purpose native magnetic oxide, of iron. This is first ground to a coarse
powder, then worked in an apparatus through which a stream of clear water is
passing upwards, whilst the magnetic oxide of iron is kept in agitation by machinery
for that purpose. So soon as all floating matter, is removed, & the water
passes off clear, the magnetic oxide of iron is ready. for use. This, I call purified
magnetic oxide of iron. The magnetic oxide of iron so prepared is a very active
filtering material: It filters rapidly; it completely destroys any organic life;, & it
removes perfectly any lead that may have been brought into solution by the water
passing through the lead service pipes.
The principle of upward filtration adopted in this filter is of great importance to
perfect filtration. The filtering material is always covered with water, & cannot
at any time come into contact with the air, excepting during the cleaning out.
1 do not claim any special design for this filter, or material from which it is
made but I use any shape or size that allows the conditions as stated above to be
carried out riz.-upward filtration through prepared magnetic oxide of iron, so
that the filtering material is always covered by the water, & air excluded.
Having now particularly described & ascertained the nature of my said.inven-
tion, & in what manner the same is to be performed, I declare that. what. I
claim is
1. The special apparatus as above detailed, & shewn in Fig. 1 & 2, when, used
either to pass water up through the filter, or to exhaust the same.
viz.
2. The general arrangements of the filter as here stated; & shewn in Fig. 1: & 2.
upward filtration through purified magnetic oxide of iron.
Dated the 2nd day of June 1892.
WILLIAM MARRIOTT.