Improvements in Apparatus for Purifying Water.
Year: 1891

page_text: Date of Application, 14th Mar., 1891
Complete Specification Left, 11th Dec., 1831-Accepted, 30th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Purifying Water.
I. FRANCIS CRUMPTON Nyx of Dock Hey B-St
City of
London, Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention relates to revolving purifiers known as Anderson's purifiers, in
which water is brought into intimate contact with metallic iron or other substance
and in which in some cases air under pressure has been employed according to the
present invention the method of introducing the air and allowing it to escape from
the cylinder is improved; and so also is the means by which the water is allowed
to issue from the cylinder.
In this improvement the air is forced into the cylinder through a pipe passing
through one of the trunnions. On entering the cylinder it branches out into 4, or
more, perforated pipes running side by side in the form of a grid to the other end
of the cylinder. The air, escaping from these pipes rises through the water to the
top of the cylinder, and escapes through a pipe taken down and out through the
other trunnion.
The water is led out of the purifier through a long box having a perforated top,
and suspended in a fixed position in the cylinder underneath the air pipes, as low
down as may be to allow the shelves to pass under it as the cylinder revolves. One
end of this box is connected by a chamber to the ordinary outlet pipe. The other
end of the box is closed, so that the water cannot escape from the cylinder save
through this box.
The action is as follows. As the cylinder revolves, a considerable quantity of
the purifying material is brought up by the shelves fixed in the cylinder and
showered down on to the box covering both box and air pipes and forming a heap
by which means the bubbles of air are well broken up. At the same time the
water is drawn down through a heap and brought into intimate contact with both
the air and the purifying material on its way to escape through the box. The
material is raked off the box periodically before it has time to cake, and is
automatically replaced by fresh material as soon as the cylinder revolves again.
In some cases the perforated top of the outlet box is made sloping and the
purifying material is retained on it by means of long curved plates or doors which
form with the outlet box a kind of double hopper. These doors are made to swing
outwards when required by releasing a rod from the levers fixed to the doors and
the purifying material is then allowed to fall to the bottom of the cylinder. The
water in this case has to travel everywhere through an equal thickness of purifying
material to get to the perforated top of the box; also by the arrangement here
shewn the labour of shovelling the material off by hand is avoided.
Dated this 14th day of March 1891.
CARPMAEL & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Apparatus for Purifying Water.
1, FRANCIS CRUMPTON NUNN, of Dock House, Billiter Street, in the City of
London, 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 revolving purifiers known as Anderson's purifiers, in

page_text: which water is brought into intimate contact with metallic iron or other substance
and in which in some cases air under pressure has been employed. According to
the present invention the method of introducing the air and allowing it to escape
from the cylinder is improved and so also is the means by which the water is
allowed to issue from the cylinder.
:
In this improvement the air is forced into the cylinder through a pipe passing
through one of the trunnions. On entering the cylinder it branches out into four,
or more, perforated pipes running side by side in the form of a grid to the other
end of the cylinder. The air, escaping from these pipes rises through the water to
the top of the cylinder, and escapes through a pipe taken down and out through the
other irunnion.
The water is led out of the purifier through a long box having a perforated top,
and suspended in a fixed position in the cylinder underneath the air pipes, as low
down as may be to allow the shelves to pass under it as the cylinder revolves.
One end of this box is connected by a chamber to the ordinary outlet pipe. The
other end of the box is closed, so that the water cannot escape from the cylinder
save through this box.
The action is as follows. As the cylinder revolves, a considerable quantity of
the purifying material is brought up by the shelves fixed in the cylinder and
showered down on to the box covering both box and air pipes and forming a heap
by which means the bubbles of air are well broken up. At the same time the
water is drawn down through the heap and brought into intimate contact with both
the air and the purifying material on its way to escape through the box. The
material is raked off the box periodically before it has time to cake, and is
automatically replaced by fresh material as soon as the cylinder revolves again.
In some cases the perforated top of the outlet box is made sloping and the
purifying material is retained on it by means of long curved plates or doors which
form with the outlet box a kind of double hopper. These doors are made to swing
outwards when required by releasing a rod from the levers fixed to the doors and
the purifying material is then allowed to fall to the bottom of the cylinder. The
water in this case has to travel everywhere through an equal thickness of purifying
material to get to the perforated top of the box also by the arrangement here
shown the labour of shovelling the material off by hand is avoided.
In order that my said invention may be fully understood and readily carried
into effect will proceed to describe the drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a longitudinal section and Figure 2 is a cross section of apparatus in
accordance with my invention.
Figure 3 shows a modification.
ment.
In Figures 1 and 2, A is the revolving cylinder through which the water is
passed and which contains the iron or purifying material, B B are the trunnions
and CC the bearings carrying the same. D is a circle of gear teeth upon the
cylinder, it engages with a pinion not shown by which the cylinder receives move-
E is the water inlet and F is the outlet. G is an air pipe through which
air is forced in. HH are air distributing pipes they form a grid. I is the air
outlet. J is a box beneath the grid, it has a perforated top, and on this box and
on the grid, the metallic iron or purifying material lies. K is the connection
between the interior of the box and the trunnion outlet. A'A' are shelves
which when the cylinder revolves pass beneath the box J, lift the iron fragments or
other purifying material and drop it upon the top of the box.
ar
In Figure 3 the top of the box J is of such a form that the fragments of iron
purifying material would slip from off it if unsupported. M Mare plates or
doors which keep the fragments in place 911 long as the lever arms L fixed to the
doors are retained by the rod N. From time to time when considered necessary
the doors are released and the heap is allowed to fall.
5

page_text: Having now particularly described and a-certained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. The improved revolving purifier herein described, and especially the means
described for bringing the water into contact with air, and the purifying material
with which the apparatus is charged.
2. In a revolving cylindrical purifier the combination of parts consisting of the
box I perforated upper surface, the air pupes Himmediately over the box
and the shelves A' upon the revolving cylinder; the whole so arranged that the
shelves A bring up the iron or material with which the purifier charged and
form a heap of it upon the box, in which heap the air pipes are buried; so that
the water flowing through the purifier traverses the heap whilst the same is
permeated by the air delivered from the air pipes.
3. In a revolving cylindrical purifier in accordance with the preceding claim, the
hinged flaps M M aiding in the support of the heap upon the box and movable to
a position which allows the heap to fall from off the box J.
Dated this 17th day of Nocambar 1901
F. C. NUNN.