improvements inter Fresses
Year: 1897

page_text: improvements inter Fresses.
JOHN HILL, of 37, Hollings Street, Fenton, Stoke-on-Trent, Mechanical Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention has reference to those filter presses which are used for making
potters clay or compressing yeast parrafin sewage and other semifluids in which
chambers are used with cloths which are carried on two horizontal bars running
paralel with each other as in the modern filter press.
The chief feature of this invention consists in a paralel filter plate except the
grooves and channels with a separate clay frame lined with wood to form the
thickness of the clay.
A filter press according to this invention consists of a filter plate made of iron
or steel paralel that is of an equal thickness except the grooves and channels or
wire work placed on to form the grooves and channels to carry away the water
from under the cloths through holes in the center of the edge of the filter plate
at the bottom the filter plate to be painted enamelled or galvanized.
The clay frames to be a separate arrangement to consist of a iron frame with
ears on to carry them on the horizontal bars and lined with wood so as to form
the thickness of the clay and to make the joint between the filter plate with the
cloths.
Improvements in Filter Presses.
I, JOHN HILL, of 37, Hollings Street, Fenton, Stoke-on-Trent, Mechanical
Engineer, 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 has reference to filter presses used in making potters' clay, yeast,
paraffin wax, filtering sewerage and for other similar purposes, and wherein cloths
are employed as the filtering medium; and my said invention consists in the
construction of same.
Hitherto the general practice has been to construct said presses of grooved wood
planks or grooved metallic surfaces called trays, cloths being laid on the grooved
or indented surfaces to form the filtering medium.
In order to make my invention more clear I will describe same with reference
to the accompanying drawings. The same letters refer to the same parts in each

page_text: figure. Fig. 1 is a front view of a press tray ring, Fig. 2 is a section of same, but
also showing one of the arms which are used to support or carry it. Fig. 3 shows
a front view of the paralell plate, with a wire mesh on each face, said mesh being
formed either by making holes in the said plate and threading wire through, or by
a wire mesh put on as shewn, the object being to provide a means for the filtrate
to escape. Fig. 4 is a vertical section of Fig. 3 showing the plate with wire mesh
in position, also the wood ring which forms a chamber. Any convenient number
of these trays being used in one press.
A is a wood ring forming a chamber or what is generally known as a press tray,
D is a metal hoop or ring encircling wood ring A and to which are attached arms
or handles C which support the tray when in the press, and also form convenient
handles for lifting said trays. B shows joint in wood ring. J is a plate of iron
or other suitable material and upon each face of which a mesh E is formed, either
by threading wire through holes drilled in the plate or by a mesh of wirework
placed on each face. At K a number of small holes are drilled through edge of
said plate J to allow the filtrate to escape. H is the aperture through which the
fluid to be filtered is forced against the filter cloths laid over the wire mesh, or
grooved surface formed by wire as before mentioned.
In carrying out my said invention I use any convenient number of the trays,
pressing them together with sufficient force against the cloths to make them water
tight. I then force in the fluid to be filtered through aperture H, until sufficient
solid matter is deposited to form a cake. The trays are then separated to allow
the cake of solid matter to be removed. The same process being repeated as
required.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is:-
A filter press having trays consisting of a paralell plate fitted with a wire mesh
on each side, or with wire threaded to form a mesh upon which the cloths are
placed so as to allow the filtrate to escape, substantially as herein set forth and
shown.