Improvements in and relating to Filtering Presses.
Year: 1898

page_text: Date of Application, 10th Aug., 1898-Accepted, 5th Nov., 1898
COMPLETE SPECIFICATION.
Improvements in and relating to Filtering Presses.
JEAN METZGER, of the Filter and Technical Brewing Machine Works, Limited,
Worms-on-the-Rhine, in the Empire of Germany, Director, 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 to provide an improved form of filtering
press and it specially relates to that class of press consisting of a series of built
up elements operated upon by the end thrust of a screw.
constructed the liquid to be purified only passes once through the filtering parti-
In presses as at present
tions before it enters into the chamber from which it is finally drawn off. In
the present invention in order to obtain a purer and better filtering of turbid
liquids a special arrangement of the elements is provided and a preliminary and
final withdrawing is arranged for by the insertion of an intermediate collecting
chamber.
The accompanying sheet of drawings illustrates in perspective the improved
filter press with the several portions a short distance apart for the
explanation.
purpose of
Referring to the drawings. The liquid to be filtered first passes into an ad-
mission chamber E and from there passes out through a bottom opening and a
top opening into passages a and b which are formed by the junction of similar
passages in the plates or frames constituting the filtering elements. The upper
passage bserves in the first instance for allowing the air to be displaced when
starting the filtering process.
Each of the filtering elements are formed of frames 1 and 2 having filter plates 3
inserted between them. Each of the separate portions of an element 1, 2, and 3 have
continuous perforations ed forming passages between them. In the frame 1
passages a bare connected with the interior rib bars thereof and in the frame 2
the passages cd with its interior though in the filtering plate 3 itself the passages
possess no outlets.
The filtering plate or plates are formed preferably of a paste-board-like material
made from compressed fibre the whole being surrounded by a frame.
It is evident now that the liquid in filtering passes in the first instance from a
chamber E through the passages a and b into the frame bar 1 and from this
hrough the bars across the frame clearly shown in the drawings through the
iltering plates into the frame 2 and into the passages c and d. It is, of course,
vident that any number of elements composed of frames 1 and 2 with a filtering
may be employed.
late
The passages c and d through the respective frames of the elements are connected
ith a central chamber or reservoir D, here the liquid, after the first filtering is
eceived and it leaves this chamber D by the passages a¹ and 6 in order to be
gain filtered, that is to say, it passes through the passages a and b into the
rame 1, then through the filtering plates, the frame 2, and the passages cd, and
nally through the ends of the passages c and d, completely and thoroughly filtered
Price I

page_text: into the end chamber or reservoir S from where it is drawn off by a waste cock
attached to C. The chamber D is constructed in two halves as shown in the
drawing for its better cleaning and purifying and the three chambers E, D, and S
have attached at their bottom portions suitable waste cocks and at the top portions
gauges só as to observe the conditions of pressure within the filter press when in
operation. The waste cock fitted upon the chamber D when the filter press is started
is usually opened to allow of a preliminary flow of liquid so that the air may
be got rid of and the press easily started.
If desired a chamber D can be inserted adjacent to each frame 2 though it is
preferred to construct the press in the manner shown with one set of elements
performing a preliminary filtration and a second set of elements performing a final
filtration.
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. Improvements in and relating to filter presses constructed with a series of
elements, consisting in arranging between the inlet chamber and the outlet chamber
an intermediate chamber so that the liquid to be filtered makes its way through
first one set of filters or elements and into the intermediate chamber and then
through a second set for the purpose of obtaining a purer and better filtration of
any turbid liquid.
2. The improved filter press substantially as hereinbefore described with reference
to the accompanying drawings.
בד
1011
Aumunt 1900
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.