Improvements in Puritying Water and in Apparatus therefor.
Year: 1890

page_text: Date of Application, 10th Jan., 1890
Complete Specification Left, 9th Oct., 1890-Accepted, 15th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Puritying Water and in Apparatus therefor.
I, EASTON DEVONSHIRE of Dock House, Billiter Street, London, Civil Engineer;
do hereby declare the nature of this invention to be as follows:-
It has before been proposed to employ purifiers which are caused to revolve so as
to bring the surfaces of particles of iron or other material contained in them into
contact with each other, thus producing a rubbing action by which the surfaces are
kept clean. It has also been proposed to employ filters containing flint or lime stone
through which the water is passed but such filters rapidly become choked.
According to this invention I substitute for the iron or other material of the old
machines, flint, limestone basic slag or the like either together or separately and in
a suitable state of sub-division. In this way I obtain the advantages of the flint and
limestone filters and avoid the disadvantage of their becoming clogged..
Dated this 8th day of January 1890.
EASTON DEVONSHIRE.
COMPLETE SPECIFICATION.
Improvements in Purifying Water and in Apparatus therefor.
I, EASTON DEVONSHIRE, of Dock House, Billiter Street, London, Civil 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:
It has before been proposed to employ purifiers which are caused to revolve so
as to bring the surfaces of particles of iron or other material contained in them into
contact with each other, thus producing a rubbing action by which the surfaces are
kept clean. It has also been proposed to employ filters containing flint or lime stone
through which the water is passed but such filters rapidly become choked.
According to this invention I substitute for the iron or other material of the old
machines, flint, limestone or basic slag either together or separately and in a suitable
state of sub-division. In this way I obtain the advantages of the flint and limestone
filters and avoid the disadvantage of their becoming clogged.
In order that my said invention may be fully understood and readily carried into
effect I will proceed to describe more in detail the manner in which I prefer to
operate.
The apparatus which I employ is a revolving vessel carried at each end by hollow
trunnions through which the water to be treated passes; and is such as is described
in the Specifications of the Patents No. 5496 of 1883, No. 12256 of 1884 and
No. 10706 of 1889.
In place of charging the revolving vessel with metallic iron as is described in the
abovementioned Specifications I charge it with flint, limestone or basic slag. I break
the material to a size to pass through a sieve of three quarter inch mesh or the pieces
may be bigger especially when the apparatus is of large dimensions.
The water is passed through the apparatus in the usual manner, the flint, limestone,
or basic slag is lifted continually upon shelves provided within the cylinder, and as
the material reaches the upper part of the cylinder it is released and allowed to descend
through the water. Afterwards by preference the water is stored for a time in a
reservoir where any suspended matter is deposited.
By this treatment all the advantage is obtained which results from the use of flint
and limestone filters and more efficiently and cheaply because in practice such filter
beds soon become obstructed by a slimy deposit.

page_text: This method of treatment herein described is especially applicable to the improve-
ment of water which is liable to attack leaden pipes; after being operated upon in the
manner described it will be found that the water has entirely lost its undesirable
property.
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 :-
The treatment of water in the manner described with fragments of flint, limestone
or basic slag, in a rotating vessel with trunnions through which the water flows and
in such manner that the said fragments are constantly lifted by shelves upon the
interior of the rotating vessel and released and allowed to fall through the water.
Dated this 8th day of October 1890.
CARPMAEL & Co.,
Agents for the Applicant.