Improvements in the Construction of Filtering Apparatus.
Year: 1893

page_text: Date of Application, 2nd Dec., 1893-Accepted, 24th Feb., 1894
COMPLETE SPECIFICATION.
Improvements in the Construction of Filtering Apparatus.
I SAMUEL ALLEN, of-12, Canterbury Road, Balls Pond, in the County of
Middlesex, Wine Cooper, 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 :-
My invention relates to improvements in the construction of filtering apparatus
and has for its object to effect filtering operations much more rapidly than hereto-
fore while utilizing for this operation means which are much more economical
than those before used.
In the accompanying sheet of illustrative drawings, wherein like letters of
reference indicate corresponding parts,
Fig. 1 shows one form and Fig. 2 another form of construction of my improved
filter, Figs. 1 and 2 being both vertical sections.
Fig. 3 is an underside view of the uppermost disc, while Figs. 4 and 5 show two
different forms of subjacent or undermost discs.
According to my invention I give to the vessel R forming the outer casing of
the filtering apparatus either the form shown in Fig. 1 wherein the bottom is
inclined all round so as to converge towards the outlet e which may or may not be
provided with a tap according as required, or that shown in Fig. 2 wherein the
bottom has the form of an inclined plane leading to the outlet e likewise provided
or not with a tap, the vessel tapering slightly in both cases towards the bottom so
as to facilitate the insertion of the discs.
The advantage of having the bottom of the filtering receptacle inclined in the
manner shown is obvious, as no dirt can accumulate.
In the filter receptacle such as shown in Figs. 1 and 2 I place at the bottom a
disc e preferably of earthenware which may have either the form shown in Fig. 4
or that shown in Fig. 5. In Fig. 4 the disc has a covering of linen or other fabric
only a portion of which has been shaded at l.
In Fig. 5 the disc is provided with a number of perforations.
bis layer of paper pulp which is poured into the filter and gradually forms
a homogeneous mass and in order that this layer should not be disturbed it is
covered by the disc a which is merely a circular piece covered with linen as
shown at .
The covering of the disc c is moreover furnished with a linen frill i for the
purpose of making a good joint with the inner periphery of the filter R.
My improved construction of filter is particularly applicable for filtering
wine, spirits and other liquids and generally for clarifying very turbid liquids.
Owing to this improved method of treating the pulp the same cannot be disturbed
when refilling which is a characteristic feature of my invention.
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. The improved construction of filtering apparatus substantially as herein
L 1

page_text: 2. In filtering apparatus the arrangement of a self deposited homogeneous layer
of paper pulp above a bottom, disc which layer is surmounted by an upper disc
substantially as herein described and shown and for the purpose set forth."
Dated this 2nd day of November 1893.
HUGHES, SON & Co.,
38; Chancery Lane, London, Agents for the Applicant.