New or Improved Filtering Apparatus.
Year: 1898

page_text: Date of Application, 6th Apr., 1898-Accepted, 14th May,
1898
COMPLETE SPECIFICATION.
New or Improved Filtering Apparatus.
I, JOSEF MITTWICH, of 48, Mainzerstrasse, Bingen on the Rhine, in the German
Empire, Merchant, 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 filtering apparatus for wine, beerwort, beer, mash,
sugar-syrup, and other liquids the clarifying of which is desirable or necessary.
The advantages of my apparatus over those heretofore in use for such purposes
are chiefly that it permits of continuous or uninterrupted working, because, when-
ever the filtering material in one of the filter chambers becomes clogged with
filtrate, the chamber containing it can be taken to pieces and the filtering material
changed without interrupting the action of the apparatus, whilst in the filtering
apparatus heretofore in use when it becomes clogged with filtrate the whole apparatus
has had to be taken to pieces and cleaned throughout.
The accompanying sheet of drawings shows a sectional elevation of a filtering
apparatus constructed in accordance with any invention.
The filter consists of a row of vertically arranged filter chambers which are
filled between the perforated partitions me with filtering material F in the usual
way. Each of these chambers can be shut off from the others by means of an
arrangement of taps or valves. The liquid to be filtered enters through the
pipes p p iuto each chamber so that the liquid under pressure spreads itself
uniformly from the centre over the whole surface of the filter plate and passes out
filtered through the pipes 1. The chambers are connected with each other by
means of indiarubber tubes fitted between the outlet pipes 7 and inlet pipes p p¹.
Taps are placed at the inlet and outlet pipes, so that each chamber can be shut
off, cleaned, and provided with fresh filtering material independently of the others.
The taps c at the lower part of the chambers are for the purpose of drawing off
the filtrate and sediment, whilst the tinned screwed rods a hold the parts of the
filter chamber together. Each chamber has a special air tap 6 for the purpose of
letting out the air brought in by the liquid to be filtered, thereby facilitating the
entrance of the latter. The air tap b also serves, in combination with the taps k,
to prevent the entrance into the filter of too much air when the reservoir from
which the liquid to be filtered is conducted to the apparatus is emptied. On the
upper part of each chamber is also placed an inspection glass d which is likewise
provided with an air tap e. Test taps q may also be placed between each chamber.
By reason of the vertical arrangement of the filter bodies the deposit of slime or
mud, particles of yeast and other coarse foreign substances is materially facilitated
and consequently the work thrown upon the filter itself is much reduced so that the
plates remain effective for a considerably longer time than in apparatus having
horizontally arranged plates, which arrangement cannot be adapted for continuous
working.
A further advantage of the apparatus is that any suitable filtering material can
be emploved in it and consequently that it can be used not only for thin liquids

page_text: such as wort, wine, beer and so forth, but also for thick liquids such as sugar-syrup
and so forth. Furthermore new and frothy beer can be filtered with this apparatus
without loss of carbonic acid, without the filter plates becoming excessively
charged with yeast or particles of gluten, and without the taste being in any way
affected.
Having now particularly described and ascertained the nature of the said iuven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A continuous filtering apparatus for wine, beer, wort, sugar-syrup, and other
liquids which consists of a row of vertical filter chambers containing filtering
material between two perforated plates, and connected together interchangeably
by indiarubber or other suitable pipes adapted to inlet and outlet pipes provided
with taps, substantially as described.