Improvements in Apparatus for Filtering and Disinfecting Water.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus for Filtering and Disinfecting Water.
I, HEINRICH WILHELM FRIEDRICH KRONE, of Kibitzstrasse, 14, Hamburg,
in the Empire of Germany, Builder, do hereby declare the nature of this inven-
tion 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 (1) an improved filter and (2) a means whereby the
unfiltered water contained in such filter may be treated with disinfecting agents
and drawn off (without filtration) for the purpose of flushing water closets, and
for like uses.
In the drawings hereto annexed,
Figure 1 represents a sectional elevation, and Figure 2 a plan of my improved
apparatus.
A filter constructed according to my invention consists of a rectangular
cistern A made preferably of sheet zinc, and divided with two compartments a
and of equal size, by a partition which forms the filtering medium. This
filtering partition is composed of three laminæ, namely, an internal lamina o of
sand and external laminæ o¹ of carbon, and may be renewed from time to time as
necessity requires.
The
A service pipe from the main supplies the compartment 6 of the cistern with
water by means of the usual ball-cock arrangement, designated c, but instead of
discharging directly from the cock c the incoming water is conducted into the
pipe and sprayed onto the surface of the filtering partition o o', the pipe i being
provided with a number of apertures for this purpose. The compartment b is
thus supplied by the pipe i until the rising water closes the ball-cock c.
water in 6 then percolates through the filtering partition o o, into the com-
partment a, whilst the ball-cock e replenishes the water in the compartment b
until the levels of water in the two compartments coincide. The filtered water may
be drawn off from a by the rose and tap n for consumption. Each time that
water is drawn from a a like quantity will percolate through o o' from 6 to a
and will in turn be supplied to 6 by the ball-cock c, as will be understood.
The bottom of the compartment b inclines from all sides towards the outlet
pipe which forms the flushing pipe of a water closet, so that any sediment which
may collect will gravitate into such outlet. k is an overflow pipe which dis-
charges into the outlet
g.
In order that the water contained in the compartment b may be treated with
disinfecting agents, a vessel d which may contain any suitable disinfecting
material, is suspended from or otherwise attached to one of the edges of the com-
partment. The vessel d is provided with a ball-cock arranged to give a
dripping supply only, and with an air inlet pipe e whose orifice dips below the
surface of the water in b. When the level of water in 6 falls, the ball-cock his
opened, and on air being admitted to d through the pipe e the disinfectant in d is
allowed to drip, into the compartment & until the level of water in 6 again closes
both the ball-cock h and the orifice f.
In case that a large quantity of water is required to be drawn off quickly, a
tapp and pipe communicating with the compartment bare provided. In this case
the water drawn off will be unfiltered.
The construction of filter above described offers considerably increased advan-
tages compared with those at present in use, among which may be distinguished
the vertical arrangement of the filtering medium o o' which precludes the
possibility of any large deposit of slime or sediment thereon, and the arrangement
of the spraying supply pipe i whose action is to wash the surface of such filtering
D
01

page_text: medium. The filtering medium will therefore last a considerable time without
requiring to be cleansed or renewed.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
1. An apparatus for filtering water, comprising a cistern divided into two com-
partment by means of a filtering medium or partition composed of laminæ of
carbon and sand, whereby the unfiltered water contained in one compartment is
filtered by gravitating through such filtering medium into the adjacent com-
partment from which it is drawn off for use, constructed and operating sub-
stantially as described.
2. The combination with filtering apparatus such as herein described of means
whereby the unfiltered water contained in such apparatus is automatically supplied
with disinfecting agents, for the purposes described.
3. The arrangement and construction of parts adapted to operate as herein
described with reference to the drawings hereto annexed, for the purposes
described.
Dated this 10th 1...
J
T1
CHEESBROUGH & ROYSTON, Fels. Chart. Inst. P.A.,
15, Water Street, Liverpool, Applicant's Patent Agents.