Year: 1896

page_text: Date of Application, 30th Mar., 1896
Complete Specification Left, 30th Jan., 1897-Accepted, 6th Mar., 1897
I, WILLIAM EDWIN HEYS of 70 Market Street Manchester, in the County of
Lancaster, Chartered Patent Agent, do hereby declare the nature of this invention
to be as follows:-
This invention relates to an improved automatic filter press in which the alternate
opening and closing of the chambers, and the stopping and starting of the supplying
pump are automatically effected through the agency of the pump safety valve
lever.
These improvements are illustrated by, and will be hereinafter described with
reference to the accompanying drawings in which :-
Figure 1 shews a sectional side elevation,
Figure 2, a sectional plan,
Figure 3, a sectional end elevation,
Figure 4, a sectional elevation of one of the frames, and,
Figure 5, a transverse section of a frame.
a a, are the standards, upon one of which the abutment is formed or secured.
c, d, e, are pipes through which the material to be filtered is supplied to the press,
on opposite sides and to the upper part respectively. f, is the press ram, and g,
a screwed spindle by which it is moved.
The press frames h, as shewn by Figures 4 and 5, are provided with inlets kk,
communicating with the pipes c, d, e, and at the bottom there is a passages,
leading to the gutter l. The joints between the frames are made tight, not by the
use of the filter cloth, as is at present common, but by means of indiarubber
packing, which is inserted into grooves in the faces of the frames, as shewn to
the left of Figure 4. This elastic packing secures with ease a good and tight
joint and obviates the present necessity for planing the surfaces of the joints.
The hollow filtering bodies t, in the frames h, Figures 4 and 5, are constructed
of perforated sheet metal, one sheet on each side of the middle plane of the frame.
Each of these sheets is bent so as to produce hollow V-shaped ribs or projections u,
which may be connected by strips w. Upon the ribs , or the strips w, pro-
jections are arranged. The ribs in one frame are constructed to break pitch
with those in the other frame, as indicated by Figure 1, so that the projections v
on one set of ribs, come into the recesses between the ribs on the contiguous frame.
Before the filtering bodies are inserted into their frames, they are covered with
filtering cloth o, sewn up and secured by the borders n, at the sides. At the
bottoms, the frames are made tight by indiarubber cords . When the filtering
bodies are inserted, the projections from one set push the cloth on the opposite
set into its recesses.
The operation of the filter press is as follows:-A driven spur wheel q, having
a screw thread to fit upon the rod g, formed through its eye, is mounted between
the brackets rr, so as to be incapable of lateral movement. This wheel is geared

page_text: with a pinion on a shaft driven by open and crossed belts on fast and loose pulleys.
At first, the wheel q is rotated in such a direction as to force the plate f in the
direction of the plate b, and at the same time the pump is started. When the
pressure reaches such a point that the safety valve lever lifts, this motion is
caused to close an electric circuit, to release a compressed spring, or similarly to
set in action known appliances by means of which the driving strap fork is
consequently moved and the motion reversed.
Whilst the frames are being forced together, and the pump is working, the fluid
to be filtered enters through the pipes c, d, e, and the inlets k, k, flows around the
filtering bodies, and the filtered liquid finally flows off through the passages and
the gutters. When the material has been sufficiently pressed, and the pump has
been stopped, the wheel q rotates so as to move the ram f in the direction away
from the plate b. When the frames are sufficiently separated, the ribs u, and
projections v, automatically cause the pressed material to drop off, and fall out of
the press between the frames. The frames are then again screwed up and the
operation is repeated.
The frames are connected together by the lazy-tongs p p, and are supported
by the brackets ii which rest and move upon the rods jj, which connect the two
standards a a.
Dated this 28th day of March. A.D. 1896.
WILLIAM E. HEYS.
I, WILLIAM EDWIN HEYS of 70 Market Street Manchester in the County of
Lancaster, Chartered Patent Agent, 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 automatic filter press in which the alternate
opening and closing of the chambers, and the stopping and starting of the
supplying pump are automatically effected through the agency of the pump safety
valve lever.
These improvements are illustrated by, and will hereinafter be described with
reference to the drawings left by me with the Provisional Specification, in
which-
Figure 1 shews a sectional side elevation ;
Figure 2, a sectioual plan;
Figure 3, a sectional end elevation; and
Figure 4, a sectional elevation of one of the frames.
Figure 5, represents a transverse section of a frame.
a a are the standards, upon one of which the abutment b is formed or secured.
c, d, e, are pipes through which the material to be filtered is supplied to the press,
on opposite sides and to the upper part respectively. f is the press ram, and g,
a screwed spindle by which it is moved.
The press frames h, as shewn by Figures 4 and 5, are provided with inlets k k,
communicating with the pipes c, d, e, and, at the bottom there is a passages,
leading to the gutter l. The joints between the frames are made tight, not by
the use of the filter cloth as is at present common, but by means of indiarubber
packing z, which is inserted into grooves in the faces of the frames, as shewn to
the left of Figure 4. This elastic packing secures, with ease, a good and tight
joint and obviates the present necessity for planing the surfaces of the joints.

page_text: The hollow filtering bodies t, in the frame h, Figures 4 and 5, are constructed of
perforated sheet metal, one sheet on each side of the middle plane of the frame.
Each of these sheets is bent so as to produce hollow V-shaped ribs or projections",
which may be connected by strips w. Up in the ribs w, or the strips w, projections v
are arranged. The ribs in one frame are constructed to break pitch with those in
the other frame as indicated by Figure 1, so that the projections on one set of
ribs, come into the recesses between the ribs on the contiguous frame. Before the
filtering bodies are inserted into their frames, they are covered with filtering
cloth o, sewn up and secured by the borders n, at the sides. At the bottoms, the
fiames are made tight by the indiarubber cords z. When the filtering bodies are
inserted, the projections from one set push the cloth on the opposite set into its
recesses.
The operation of the improved filter press is as follows:-A driven spur wheel g,
having a screw thread to fit upon the rod g formed through its eye, is mounted in
the brackets rr, so as to be incapable of lateral movement. This wheel is geared
with a pinion on a shaft driven by open and crossed belts running on fast and
loose pulleys. At first, the wheel y is rotated in such a direction that it forces
the plate in the direction of the plate b, and at the same time the pump is started.
When the pressure reaches such a point that the safety valve lever lifts, this
motion is caused to close an electric circuit, to release a compressed spring, or
similarly to set in action known appliances by means of which the driving strap
fork is consequently moved and the motion reversed.
Whilst the frames are being forced together, and the pump is working, the fluid
to be filtered enters through the pipes c, d, e, and the inlets k k, and flows around
the filtering bodies. The filtered liquid finally flows off through the passages 8 and
the gutters 1. When the material has been sufficiently pressed and the pump has
been stopped, the wheel grotates so as to move the ram fin the direction away
from the plate b. When the frames are sufficiently separated, the ribs u and the
projections v, automatically cause the pressed material to drop off and fall out of
the press between the frames. The frames are then again screwed up and the
operation is repeated.
The frames are connected together by the lazy-tongs p p and are supported
by the brackets ii which rest and move upon the rods connecting the two
standards a a.
Having now particularly described and ascertained the nature of my said inven
tion and in what manner the same is to be performed, as communicated to me by
my foreign correspondent, I declare that what I clain is :-
1. Automatic filter presses constructed arranged and operated substantially as
hereinbefore described with reference to the accompanying drawings.
2. In a filter press, frames having grooves formed in their faces, and elastic
waterproof packing fitted in the grooves, substantially as and for the purpose
hereinbetore described and as illustrated by the accompanying drawings.
3. In a filter press, hollow filtering bodies t containing the frames h, constructed
of perforated sheet metal having projecting parts formed thereon and arrangel
substantially as herein before described.
Dated this
der of
D 1607
WILLIAM E. HEYS.