Improvements in and relating to Water Filters
Year: 1899

page_text: Date of Application, 12th Apr., 1899-Accepted, 2nd June, 1899
COMPLETE SPECIFICATION.
Improvements in and relating to Water Filters,
I, JULIUS FISCHER VON AUENBACH, of 27, Erzsébet Körut, Budapest, in the
Austro-Hungarian Empire, Technical Expert, 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 water filters and has for its object to produce a water
filter of simple and inexpensive construction by means of which all practical and
hygienic requirements are attained. In the provision of water filters for domestic
and public use the construction should be such that the constituent parts can be
taken asunder and be readily accessible so that the filtering medium may be
readily cleansed, and unfiltered water should be capable of passing through with-
out the possibility of stirring up or withdrawing the sediment previously deposited.
These conditions are but imperfectly attained in filters at present known and it is
the object of the present invention to provide a water filter that shall perfectly
fulfil all these conditions.
The invention is illustrated in the accompanying drawings in which,
Figure 1 is a vertical sectional elevation of a water filter made in accordance
with the invention.
Figure 2 is a plan corresponding to Figure 1 in which the outer bell is removed.
Figure 3 is a part vertical elevation of an alternative construction.
Figure 4 illustrates a manner of cleaning the filtering medium.
In carrying the invention into effect as illustrated in Figures 1 and 2 of the
accompanying drawings a base part A is employed in which the inlet and discharge
orifices of the filter are provided in such a manner that when required the water
may be led so as not to pass through the filter and in so doing will not have the
effect of withdrawing the sediment that may have been previously deposited upon
the filtering medium or stone, such base part is capable of receiving a glass
bell 10 by means of which the filtering operation and the condition of the filtering
medium or stone may be clearly seen.
The base part A consists of a disc 1 which is provided with orifices 2, 3, and
carries a cock 6 which is secured to the water pipe 4. A nozzle 8 is screwed
within the orifice 3 of the base part A and carries the filtering medium or
stone 7, while a nozzle 22 is screwed within the orifice 2 and has its extremity
screwed to receive a screw cap 23 which screw cap is also capable of being applied
to the screwed extremity of the nozzle 8.
For the purpose of diminishing the velocity of egress of water when such is
not passed through the filter and to prevent the production of eddies and thereby
prevent the disturbance and extraction of the sediment previously deposited upon
the filtering medium or stone 7 within the bell 10 cross bars 20 or other suitably
shaped obstructions are inserted within the orifice 2 as indicated in Figures 1
and 2 of the drawings.
The surrounding bell 10 is preferably made of glass but it may also be made
of metal and it is preferably provided at its lower extremity with a flange 11

page_text: which can be drawn down tightly by means of clamping bolts 14 having hook
shaped extremities which bed upon the flange 11, such clamping bolts 14 passing
between projections 13 provided upon the base part A and being provided at
their screwed extremities with thumb nuts 15 by means of which the bell may
be firmly seated upon the base part A, a packing ring being preferably inserted
upon the base part under the edge of the bell. In order not to allow the clamping
bolts 14 to act directly upon the glass flange 11 a metal ring 24 is preferably
placed over it and an elastic ring 25 inserted between such metal ring and the
glass surface, the hook extremities of the bolts 14 engaging with the metal ring.
The metal ring may be roughened so as to present a better bearing surface on
each side.
In operation the water passes from the pipe 4 through the cock 6 through the
orifice 2 into the bell 10 thence percolates through the filtering medium or
stone 7 and issues out through the nozzle 3.
If unfiltered water is required the screw cap 23 is removed from the nozzle 22
and is applied to the nozzle 8. The water then passes through from the cock
and down the nozzle 22. A separate cock body 61 (Figure 2) may, however, be
applied for the purpose of turning on unfiltered water direct from the water pipe.
Figure 4 illustrates the manner of cleansing the filtering medium or stone
employed. In this case a screwed coupling piece 21 connects the nozzle S¹ of the
filtering medium 71 mounted in the filter with the nozzle. 82 of the filtering
medium or stone 7 that is to be cleansed thus permitting of the water to pass
through the filtering medium or stone 7* from within to the exterior so that thereby
it is cleansed for further use.
Instead of a bell 10 of glass or metal being employed a cylinder may be used
upon which a cover plate 18 may be firmly secured by screwed bolts 17 and thumb
nuts 17, such bolts being connected to the base part A. A packing ring may,
of course, be inserted between the cover plate 18 and the edge of the cylinder 10,
and an air valve 19 may be provided in the cover plate to allow any water
eventually remaining between the cylinder and the filtering medium or stone to
flow away.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. A water filter constructed substantially as hereinbefore described.
2. A water filter consisting of a base part A in which the inlet and outlet orifices
are provided and upon which a bell or cylinder is mounted and upon which the
filtering medium or stone is secured substantially as hereinbefore described.
3. In a filter such as specified in Claims 1 and 2 the provision within the inlet
of cross bars or obstructions such as 20, and nozzle such as 22 capable of being
closed by a cap substantially as and for the purpose specified.
'
4. In a water filter such as specified in Claims 1 and 2 a bell of glass or metal
provided with a flange by means of which it is pressed in close contact with the
base part by clamping screws substantially as described and as illustrated in
Figure 1 of the drawings.
Dated this 19th Jan
J
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25, Cross Street, Manchester, Agents.