Year: 1887

page_text: Date of Application, 11th Nov., 1887
Complete Specification Left, 11th Aug., 1888
Complete Specification Accepted, 14th Sept., 1888
I, THOMAS NEWMAN, of 31 Marchmont Street, in the County of Middlesex, Wine
Merchant, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved construction of apparatus for rapidly
filtering liquids, the same being specially adapted for filtering wines and spirits.
Filtering apparatus constructed according to my improved method consists of a
vessel provided with numerous filtering media, each of which consists of a sheet of
canvas, or other suitable woven or felted material, stretched upon a circular frame,
the latter being carried upon a central stem which is tubular and serves for conveying
the liquid received from each filtering medium to an outlet at the bottom of the
vessel. Each canvas-covered frame mounted in or upon a dished receiver, against
which the rim of the frame is pressed; the canvas covering being thereby secured in
position and at the same time utilised for closing the joint between the frame and
the receiver. The several pairs of covered frames and receivers are traversed axially
by the central tubular stem, the latter being provided with orifices which are open
to the several spaces intervening between the canvas-covered frames and their dished
receivers. For convenience in manufacture, erection and cleansing, the central stemn
may be formed in several lengths and put together with packings which serve at the
same time to close the joints between the central stem and the canvas-covered frames.
Or the canvas itself may be so arranged as to form a packing. Above the series of
filtering frames, the vessel is preferably provided with a removable strainer for
arresting the grosser solid impurities. The inlet may be furnished with a float and
shut-off valve for controlling the level of the supply.
In preparing the apparatus for use, a suitable quantity of paper pulp, kaolin, ground
charcoal or equivalent filtering or filling material is introduced, the solid ingredients
whereof settle upon the approximately horizontal sheets of canvas and occupy the
interstices or pores thereof. The liquid to be filtered is then admitted to the vessel,
and, passing through the several stretched sheets of pulp-charged canvas, falls into
the dished receivers, whence it drains to the central tube and thence flows to the
гр:

page_text: outlet. For certain classes of liquids, the use of paper pulp or other supplementary
filtering material may be dispensed with; the canvas sheets being alone employed or
in conjunction with linen sheets.
Amongst the advantages incidental to this method of construction, it may be
observed that a large area of filtering surface may be disposed in an apparatus of
moderate height; rapidity of action and increased applicability for cellar-use being
thereby secured. Moreover, if the use of the apparatus be temporarily interrupted,
the supplementary filtering material remains undisturbed upon the sheets of canvas
whereon it has been deposited; whereas, if the surfaces carrying the same be vertical,
there is a tendency, upon the flow of the liquid ceasing, for the paper pulp, or other
supplementary filtering material employed, to subside to the bottom of the vessel.
Dated the 9th day of November 1887.

page_text: Improvements in Filters.
I, THOMAS NEWMAN, of 31, Marchmont Street, in the County of Middlesex, Wine
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 an improved construction of apparatus for rapidly
filtering liquids, the same being specially adapted for filtering wines and spirits.
And in order that my invention may be readily understood, I will proceed to
describe the same with reference to the accompanying diagrammatic drawings,
whereof Fig. 1 represents in vertical section filtering apparatus constructed according
to my improved method; Fig. 2 being a similar view to an enlarged scale of
part of one of the filtering elements.
j
In carrying out my invention, I employ a vessel a provided with a series of
filtering elements b, each of which consists of a sheet of canvas 61, or other suitable
woven or felted material, stretched upon a circular frame 62 and laced upon the
under side thereof. The frame may be mounted in, or may form part of, a dished
receiver carried upon a central stem which is tubular and serves for con-
veying the liquid received from each filtering element to an outlet c at the bottom
of the vessel a. Each canvas-covered frame is surrounded by a ring b³ which assists
in securing the canvas covering upon the frame 62, but which is more particularly
intended for retaining the supplementary filtering material upon the surface of the
canvas as hereinafter explained. The several sets of covered frames and receivers
the latter being provided
are traversed axially by the central tubular stem b
with orifices 6, which are open to the several spaces intervening between the
canvas coverings and the floors of the receivers. For convenience in manufacture,
erection and cleansing, the central stem may be formed in several lengths; the cone-
shaped extremity of one length fitting within a corresponding recess formed in the
extremity of the next length. If preferred, the different lengths may be put
together with packings which may serve at the same time to close the joints
between the central stem and the canvas-covered frames or receivers. Or, the canvas
itself may be so arranged as to form a packing, as illustrated in the present design.
Above the series of filtering frames or elements, the vessel is preferably provided
with a removable strainer d for arresting the grosser solid impurities. The inlet
may be furnished with a float and shut-off valve e, for controlling the level of the
supply.
In preparing the apparatus for use, a suitable quantity of paper pulp, kaolin,
ground charcoal or equivalent filtering or filling material is introduced, the solid
ingredients whereof settle upon the approximately horizontal sheets of canvas and
occupy the interstices thereof. The liquid to be filtered is then admitted to the vessel,
and, passing through the several stretched sheets of pulp-charged canvas, falls into
the dished receivers, whence it drains to the central tube and thence flows to the

page_text: outlet. For certain classes of liquids, the use of paper pulp or other supplementary
filtering material may be dispensed with; the canvas sheets being employed alone or
in conjunction with linen or other sheets with small interstices.
Amongst the advantages incidental to this method of construction, it may be
observed that a large area of filtering surface may be disposed in an apparatus of
moderate height; rapidity of action and increased applicability for cellar-use being
hereby secured. Moreover, if the use of the apparatus he temporarily interrupted,
the supplementary filtering material remains undisturbed upon the sheets of canvas
whereon it has been deposited; whereas, if the surfaces carrying the same be vertical,
there is a tendency, upon the flow of the liquid ceasing, for the paper pulp, or other
supplementary filtering material employed to leave the filtering surfaces and to subside
to the bottom of the vessel.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I claim :-
1. The improved construction of filter, arranged and operating substantially as
herein described.
2. Constructing filters with several similar filtering elements arranged one above
the other and each comprising a canvas or similar filtering surface arranged approxi-
mately horizontally and adapted for the reception of a supplementary filtering medium;
the same being employed in conjunction with a dished receiver, and communicating
centrally with a hollow stem, substantially as herein described.
Dated this 10th day of August 1888.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C.,
Agent for the Applicant.