A Machine for the Extraction of Liquid from Sewage Sludge and other Substances.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
A Machine for the Extraction of Liquid from Sewage Sludge and
other Substances.
CHARLES JAMES LOMAX, 19 and 20, Grosvenor Chambers, Deansgate, Man-
chester, Civil Engineer, I do hereby declare the nature of this invention to be
as follows:-
This invention relates to improvements in machinery designed for the rapid
separation of liquid from sewage sludge & other substances, somewhat after the
manner described in my prior Patent numbered 19,916 and dated the 30th
August, 1897.
The machine may be constructed in one way as follows:-
A large cylinder of any convenient diameter composed of an inner & outer
perforated plate of steel, iron, or other metal, between which the straining cloth,
wire gauze, or other suitable material is placed.
The cylinder will revolve as desired, the ends thereof being fixed or stationary.
At one end of the large cylinder and communicating with it, is another
cylinder, similarly constructed but smaller in diameter; the small cylinder is
a fixture.
A shaft with a conveyor attached thereto passes through the entire length of
the small and large cylinders, the blade of the conveyor just impinging on the
inner perforated plate of the small cylinder.
In the large cylinder the conveyor is covered by a sheet of metal in the form
of a hood, so that one side of the hood just impinges on the inner casing of the
cylinder, and the other side is brought within one inch or thereabouts of the
inner casing. In this way the conveyor is entirely enclosed within the hood with
the exception of the small opening of one inch or thereabouts above referred to;
this hood is attached to the 2 fixed ends of the large cylinder.
The sewage sludge or other substances from which the liquid has to be ex-
pressed is forced by compressed air or other means, into the large cylinder, the
moisture escaping through the perforated plates and the straining cloth above
referred to, the solid matter matter is deposited on the inner perforated plate
and as the cylinder revolves is brought to the conveyor; the solid matter passes
under the covering or hood to the conveyor at the side where the hood is brought
within one inch or thereabouts of the casing, and is intercepted and removed
by the other side of the hood which just impinges on the casing.
The conveyor is made to revolve as required and in so doing removes the solid
matter, which is brought within the hood, from the large cylinder to the small one.
At the end of the small cylinder is an orifice which may be contracted or ex-
panded at will, and through it the solid matter is liberated.
The 2 cylinders may be of any diameter: the cylinder casings may be con-

page_text: structed in sections for purposes of repair or for renewing the straining material,
which lies between the inner & outer casings: each section being hinged or other-
wise as required.
There may also be a covering on the outer side of the cylinders in the form of
a jacket, leaving a space between the outer covering & the perforated plates
before described, and into which compressed air, or water may be forced with the
object of removing the solid matter which may have become caked in the per-
forations of the inner casing.
In another way, the machine may be made conical in shape, as set forth in
my Patent, numbered 19916; the casing to be composed of perforated plates
with straining cloth or other material between them. The screw conveyor being
fixed' or stationary is made to fit closely to the inner casing, from one end of the
cylinder to the other. The casing of the cylinder is made to revolve as desired.
The blades of the conveyor being stationary remove the solid matter from the
inner casing to the narrow end or apex of the cone where it is liberated by an
orifice which may be expanded or contracted at will.
The form of construction and working of the machine are identical with that
described in my Patent No. 19916 dated 30th August 1897, with the exception,
that the casing of the cone revolves instead of the conveyor.
11.
1
..
1000
COMPLETE SPECIFICATION.
A Machine for the Extraction of Liquid from Sewage Sludge and
other Substances.
I, CHARLES JAMES LOMAX, of 19 and 20, Grosvenor Chambers, Deansgate,
Manchester, in the County of Lancaster, Civil Engineer, do hereby declare the
nature of my said 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 improvements in machinery designed for the rapid
separation of liquid from sewage sludge and other substances somewhat after the
manner described in my prior Patent, numbered 19916, and dated the 30th
August 1897. The machine may be constructed in one way as follows:-A
large cylinder of any convenient diameter composed of an inner and outer per-
forated plate of steel, iron, or other metal is provided with straining cloth, wire
gauze, or other suitable material. The cylinder will revolve as desired; the
ends thereof being fixed or stationary. At one end of the large cylinder and
communicating with it is another cylinder similarly constructed but smaller in
diameter. The small cylinder is a fixture. A shaft with a conveyor attached
thereto passes through the entire length of the small and large cylinders; the
blade of the conveyor just impinging on the inner perforated plate of the small
cylinder. In the large cylinder the conveyor is covered by a sheet of metal in
the form of a hood, so that one side of the hood just impinges on the inner casing
of the cylinder, and the other side is brought within an inch or thereabouts of
the inner casing. In this way the conveyor is entirely enclosed within the hood
with the exception of the small opening of one inch or thereabouts above referred
to. This hood is attached to the two fixed ends of the large cylinder. The
sewage sludge or other substances from which liquid has to be expressed, is

page_text: forced by compressed air or other means into the large cylinder; the moisture
escaping through the perforated plates and straining cloth above referred to;
the solid matter is deposited on the inner perforated plate and as the cylinder
revolves is brought to the conveyor, the solid matter passes under the covering
or hood to the conveyor at the side where the hood is brought within one inch or
thereabouts of the casing, and is intercepted and removed by the other side of
the hood which just impinges on the casing. The conveyor is made to revolve
as required, and in so doing removes the solid matter which is brought within the
hood from the large cylinder to the small. At the end of the small cylinder is
an orifice which may be contracted or expanded at will, and through it the solid
matter is liberated. The two cylinders may be of any diameter. The cylinder
casings may be constructed in sections for purposes of repair or for renewing
the straining material which lies between the inner and outer casings; each
section being hinged or otherwise as desired. There may be also a covering on
the outer side of the cylinders in the form of a jacket: leaving a space between
the outer covering and the perforated plates before described, and into which
compressed air or water may be forced with the object of removing the solid
matter which may have become caked in the perforations of the inner casing.
In another way the machine may be made conical in shape as set forth in my
Patent numbered 19916; the casing to be composed of perforated plates with
straining cloths or other material between them. The screw conveyor being fixed
or stationary is made to fit closely to the inner casing from one end of the cylinder
to the other. The casing of the cylinder is made to revolve as required; the
blade of the conveyor being stationary removes the solid matter from the inner
casing to the narrow end or apex of the cone, where it is liberated by an orifice
which may be contracted or expanded at will. The form of construction and
working of the machine are identical with that described in my Patent
No. 19916, dated 30th August 1897, with the exception that the casing of the
come revolves instead of the conveyor.
DESCRIPTION OF DRAWINGS.
Fig. 1 is a longitudinal sectional elevation of my invention consisting of a
machine for the extraction of liquid from sewage sludge and other substances-
Fig. 2 a plan of Fig. 1 with outer cover or jacket removed, and Fig. 3 a part
transverse sectional elevation through line A B in Fig. 1.
In all the figures the same letters are employed to indicate corresponding
parts.
C is a metallic perforated cylinder; 1) inner perforated cylinder of steel, iron,
or other metal; E straining cloth, wire gauze, or other suitable material; G
stationary ends in which the metallic perforated cylinder Crotates; H small
metallic cylinder communicating with metallic cylinder Cand fixed to one of
the stationary ends G; I conveyor shaft; J conveyor; K hood; L inlet for
sewage sludge and other substances; M stop valve; N pipes for conveying
sewage sludge and other substances to the inlet L; O outlet; P valve, the outlet
of which may be contracted or expanded from an infinitesimal point to full bore
and vice-versa; Router covering or jacket; S spur gear on outer side or
diameter of metallic cylinder C; T spur pinions on shaft U; V pedestals or
bearings; W strap driving pulley fixed on shaft U, and X loose pulley mounted
on shaft U.
The stationary ends G are provided with the stands or feet Y for supporting
the same on the floor, being securely fixed to the latter by bolts and nuts. The
metallic perforated cylinder C is provided with the flanges Z on which the same
rotates in the stationary ends G. At one end of the large cylinder C and to the
stationary end G is fixed the small metallic cylinder H. In line with the small
metallic stationary cylinder H is fixed the metallic hood K secured to the inside
of the stationary ends G. One of the stationary ends G is provided with the

page_text: stuffing-box (a) and gland (b) through which the conveyor shaft I passes, carrying
the conveyor J, and which also passes through the entire length of the metallic
cylinder and the fixed small metallic cylinder H; the other end of the con-
veyor shaft I being supported in the bearing (c) on the outer end of the small
metallic cylinder H. The outer end or thereabouts of the latter is provided
with the foot (d) resting on the supporting fixing (f) secured to the floor by bolts
and nuts in any convenient manner. In the large metallic cylinder the con-
veyor J is covered by the metallic hood K, constructed so that one side or
bottom edge of the latter just impinges on the inner casing of straining
cloth, wire gauze, or other suitable material E in the inside of the inner per-
forated metallic cylinder D; the other side or bottom edge of the metallic hood K
being brought within an inch or thereabout of the inner casing E consisting of
either the straining cloth, wire gauze, or other suitable material, thus forming
the opening (h) for the inlet of sewage sludge and other substances to the inside
of the metallic hood K to be operated upon and removed therefrom as it collects
by means of the conveyor J; the latter forcing or pushing the solid matter
collected into the small fixed metallic cylinder H from whence it flows or passes
down the outlet and through the outlet valve P into any vessel or receptacle
provided to receive the same. By thus constructing the metallic hood K the
conveyor in the inside of the large cylinder C is entirely enclosed within the
same with the exception of the small longitudinal opening (h) of a depth of one-
inch or thereabouts above referred to. The straining cloth, wire gauze, or other
suitable material E is secured to the inner perforated cylinder I by means of
stitching or by being tied thereto with string or its equivalent. The sewage
sludge or other substances from which liquid has to be expressed is forced through
the pipes N and valve M by compressed air or other means-supplied from any
convenient source-and through the inlet L into the large cylinder C: the mois-
ture or liquid escaping through the straining cloth, wire gauze, or other suitable
material E, the solid matter deposited on the latter being brought as the
cylinder C and its internal appendages revolve or rotate-to the conveyor J, the
solid matter deposited on the straining cloth, wire gauze, or other suitable
material E passes through the longitudinal opening (h) on one side of the hood K
to the conveyor J, and is intercepted and removed by coming in contact with the
other side of the hood K which impinges on the straining cloth, wire gauze, or
other suitable material E. The conveyor J and shaft I are rotated by means
of the spur wheel (r) gearing with the spur wheel (f) mounted on the shaft U
driven by the strap pulley W and a belt actuated from any convenient source.
The large cylinder C is covered longitudinally by the outer covering or jacket R
secured to the ends G by the set screws (e) or other equivalents; leaving a space
between the inside of the outer covering or jacket R and the outside of the per-
forated metallic cylinder C into which compressed air or water may be forced
for the purpose of removing solid matter which may have become caked in the
perforations of the inner casing 1).
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what I
claim is: :-
1. The general arrangement,, construction, and combination of parts composing
the machine for the extraction of liquid from sewage sludge and other substances,
the whole being applied and operating, substantially as described and as illus-
trated in the annexed drawings.
2. In a machine for the extraction of liquid from sewage sludge and other
substances the use of the perforated rotating cylinder C, provided with the in-
ternal perforated cylinder 1 and straining cloth E, mounted in the stationary
ends G, the outer longitudinal diameters of which are enclosed by the covering
or jacket R; the inside being fitted with the hood K secured to the stationary

page_text: ends G, and through which passes the conveyor I and shaft J into the small
cylinder H fixed outside one of the ends G, the whole being constructed, arranged,
applied, and operating substantially as described and as illustrated in the annexed
drawings.