Apparatus for Removing Foreign Substances from Water passing through Water-meters.
Year: 1898

page_text: Date of Application, 22nd Apr., 1898-Accepted, 9th July, 1898
COMPLETE SPECIFICATION.
Apparatus for Removing Foreign Substances from Water passing
through Water-meters.
I, JULIUS KEIM, Manufacturer, of Weissenfels, in the Empire of Germany, 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:-
.
The object of the present invention is an apparatus for removing foreign
substances from water-meters, in which the quantity of water is registered by a
disc, that is turned by means of the body of water flowing through.
It is true that apparatus of the kind has been constructed in different forms,
for instance, grooves, channels, recesses, or small filtering pieces have been
arranged for collecting the extraneous substances, but none of these contrivances
have really effected the intended object, as these substances are constantly stirred
up again by the water flowing in afterwards and carried therewith into the
apparatus, where they lie in the lower corners, causing considerable damage
and frequent interference with the action of the water-meter.
The present invention consists in an apparatus for separating extraneous
substances in water-meters, and which completely obviates the disadvantages
attaching to such contrivances. For this purpose a filtering apparatus resembling
a cup is provided, the meshes being so arranged that it is impossible for the water
to flow direct through the pipe. The filtering apparatus is in fact provided with
meshes on one side only, viz. on the side lying opposite to the inlet opening.
The water flowing in is thus obliged to dash against the solid wall of the filtering
apparatus, and forced at first to run downwards, and then round the cup-like
part of the filtering apparatus so as to penetrate from the side and from behind
into the interior of the sieve. The consequence of this is that the extraneous
substances in the water, such as small pieces of tin and grains of sand etc., which
are constantly carried along with the water, must be deposited, as being of
greater specific gravity, they must sink downwards more quickly than the par-
ticles of water penned underneath the sieve. In a casing suitably provided, the
extraneous substances can easily collect, and be from time to time removed from
the water-meter.
In the accompanying drawing, the object of the invention is illustrated, the
drawing showing a section.
Between the disc-casing a of the water-meter and the screw closing cover C
of the same is the filtering apparatus b¹. The latter, as already mentioned, is in
shape like a cup, and, when the whole internal construction is firmly screwed,
serves with the ring as support for the disc-casing a. The filtering apparatus b¹
has, only on the hemispherical part lying opposite to the inlet opening, per-
forations, 9, as will be seen from the drawing, so that the water, when it
dashes in the direction of the arrow against 61, is forced to flow downwards and
to reach the interior from the back and sides. In this way it must deposit the
extraneous substances which it contains, as these are of greater specific gravity,
and therefore settle down more quickly than the body of water penned down-
wards.

page_text: On the water-meter casing A, a cover C is arranged, this cover being furnished
with an inward projecting wall 12 and transversal ribs 13, so that separate small
chambers are formed. In these chambers the extraneous substances settle down
and can be removed by taking off the cover. Any washing or stirring up of the
extraneous substances by the body of water subsequently flowing through is
impossible; nor can these substances enter the interior straining chamber and
there cause damage or interference with the working.
Having now particularly described and ascertained the nature of this invention,
and in what manner the same is to be performed, I declare that what I
claim is:-
-
1. Apparatus for removing foreign substances from water-meters, distinguished
by the arrangement of a cup-like filtering contrivance surrounding the disc-
casing, and having perforations only on the side lying opposite to the water
inlet opening, for the purpose of causing the inflowing water to dash against
the solid sides of the filtering apparatus and thereby to effect a separation of
the foreign substances.
2. In the apparatus claimed in Claim 1, the arrangement of a removable
cover C, screwed on to the casing wall A, and which is divided into separate
small chambers by a projecting wall 12 and transversal ribs 13, in which
chambers the extraneous substances can be so deposited that no stirring up thereof
by a subsequent flow of water is possible.
1