Abstract: A hydra-extractor includes an extractor screw and dewatering chamber, a cone for directing dried material to a plug cutter, the plug cutter, and a discharge chute. Associated power apparatus is mounted on the hydra-extractor. A novel cone is provided which is hyberolic in shape, composed of a high density urethane, and separable into two parts. The cone is affixed to the plug cutter which is also separable into two parts. The plug cutter is affixed to and rotated by the extractor screw shaft.

Abstract: A process and system for preparing vegetable oilseed meal for subsequent solvent extraction of the contained vegetable oil, comprising a screwpress section and extruding/expanding section, a common worm shaft (10, 11) rotating within a perforated barrel wall section (14) and a non-perforate barrel wall section (18) connected by an annular member (16) with water injection nozzles (17) therein. Meal enters at inlet (13); oil is extracted through wall (14); the meal enters section (18) at increased temperature and moisture content; its temperature is then increased further to a level at which the increased moisture content will flash off as the meal leaves the restricted orifice (19) thus increasing the porosity and extractability of the meal.

Abstract: An improved system and method for increasing the operational efficiency of screw-type presses which express or compress fluids from fibrous material. These improvements generally include improved means for compressing the fibrous material at its interface with both the hollow main shaft and the cylindrical outer housing of the press. Improved split worms having improved attaching means for each worm flight to the main shaft and collar therearound also contribute to improved efficiency. Further included is an improved means for draining the expressed fluids from the compression chamber radially inward into the hollow main shaft and radially outwardly through the outer housing wall of the compression chamber. In addition to improved radially outward drainage, improved wedge-shaped screen bars in the cylindrical outer housing walls eliminate the need for breaker bars which are otherwise necessary to reduce the spiraling effect of this fibrous material during compression.

Abstract: Apparatus for separating and collecting different grades of grape juice from a continuous action, inclined helical screw dejuicer having a plurality of drip pans below the dejuicer barrel formed to convey different grades of grape juice to receiving troughs, at least some of the drip pans being adjustable longitudinally of the dejuicer barrel for selectively varying the nature and quality of the juice collected by each adjustable drip pan. The method contemplates adjusting the quality of each grade in the manner described, making it possible to collect the "first press" clear, uncolored juice pressed from colored grapes so as to be able to make white wine from red grapes.

Abstract: A screw press for extracting liquids from liquid-solid mixtures continuously and in a single operation. The press comprises a barrel divided into a feed section and a pin-barrel section. A rotatable screw is disposed in the barrel. Grooves are provided in the feed section to ensure a good feed input and hence an economical throughput, the pin-barrel section including radial pins extending into the barrel which, together with the rotation of the screw cause a high pressure to build up in the barrel thereby comminuting the mixture. The screw has helical flights formed thereon, the flights defining ridges, radial bores being formed in the ridges which communicate with an axial bore formed in the screw permitting the draining away the extracted liquid directly from the region in which it is extracted.

Abstract: A method and apparatus for treating a pulp suspension in the manufacture of paper employing a controlled drainage thickener and a screw type pulp press. Pulp is fed into the thickener where the feed screw contained therein delivers it to a vertical discharge column. A screw type conveyor delivers the pulp suspension from the vertical discharge column into a vertical inlet column associated with a screw type pulp press. A sensing means is provided to measure the consistency of the pulp entering the press, and a sensing means provides a control signal which is arranged to modulate operation of a discharge valve on the thickener to keep the consistency of the pulp entering the screw type pulp press within a predetermined range.

Abstract: Screw press with one or more screws having a sieve surface. The screw is fabricated to have a reinforced construction by way of a rigid main stem portion disposed radially inwards of a rigid sieve-forming surface portion and reinforcing ribs disposed between these portions. Screw threads of the screw are secured directly to the sieve-forming surface portion while a drainage duct for draining fluid from the latter portion is formed between this portion and the main stem portion.

Abstract: An extrusion device used for extracting liquids from liquid-solid mixtures and which operates on the separation gap principle, comprising a screw rotating in a barrel. Pins project radially inwardly into the barrel. The separation gaps and the internal lining of the barrel are maintained in an operationally efficient state for long periods of time even if highly abrasive and/or corrosive mixtures are being treated. The internal surface of the hollow barrel is lined with individual, interchangeable segments which are peripherally staggered relative to one another in the form of a wall, end face or tip portions are located on the end portion of the pins. Moreover, the screw comprises a mandrel on which are mounted individual screw flight portions. Between the flight portions, ring portions are mounted on the mandrel. These ring portions and the tip portions mounted on the pins define the separation gaps. Accordingly, those parts which are liable to wear or corrode can be readily replaced.

Abstract: An apparatus for removing liquid from a solid suspension includes a screw conveyor in a housing having a suspension inlet, a liquid outlet and a separate outlet for the thickened solids. To increase the thickening effect, the faces of the screw threads are coated or treated to cause the coefficient of friction of the front, thrust faces to be higher than that of the rear faces. The coefficients can also be varied longitudinally, either continuously or in stages.

Abstract: Processing shaft for machines for extruding or the like, comprising a core shaft having at its front end an axial stop member for slip-on processing members arranged non-rotationally on the core shaft, further comprising a spacer sleeve supporting the processing members rearwardly, and arranged non-rotationally at the rear end area of the core shaft a slip-on coupling sleeve on whose external thread a clamp nut is screwed, and also comprising a clamping force transmitting member tightenable rearwardly against a stop member of the core shaft by the clamp nut.

Abstract: In a continuous press of a screw blade type, a driving shaft is rotatably secured to a frame by means of thrust bearings at both ends of the driving shaft, a screw drum having an increasing diameter towards center is disposed around the driving shaft to rotate therewith, a pair of screw blades are helically arranged around the screw drum symmetrically with respect to the center of screw drum, and an outer drum having a number of small filtering holes is arranged around the screw blades. A pair of inlets for introducing raw materials to be pressed are provided at both ends of the outer drum and an outlet from which the pressed raw materials are discharged is also provided in the outer drum at its center. At the outlet a pair of cone-shaped plates are arranged movably in an axial direction of the press and these plates are resiliently pressed towards each other. The pressure applied to the cake is automatically maintained constant due to the axial movement of the plates.

Abstract: Olive oil is recovered from olives by separating olive pits from olives to obtain a pitless olive meat, by maintaining the pitless olive meat at a temperature of about 70.degree. F. to about 110.degree. F., by introducing the pitless olive meat to an extraction zone, by withdrawing a liquid phase comprising olive oil, water, and a minor proportion of pulp from a first portion of the extraction zone, and by withdrawing a substantially dry solid olive pulp from a second portion of the extraction zone. The pulp and water are separated from the oil to obtain a pure olive oil. An inert additive is mixed with the pitless olive meat before extraction to increase the yield of product olive oil. Where olive culls are used as the starting material, the culls are wetted before the pits are separated.

Abstract: A tunnel drier particularly for plastic materials has a screw-conveyor operated by an electric motor through a reducer.The shaft (11) of the screw is suspended rotatably in tapered roller bearings (9). The helical vanes (12) of the screw conveyor advance the material fed through a hopper (5), through a drying channel (4). Halfway between the last turn of the helical vane (12) and disposed at 90.degree. to the shaft (TR'), there is a semicircular section (13) to break up the material before it enters the high pressure area where the action of the advancing screw ends. This area is equipped with openings, in greater density in the high pressure area (6) than in the next section (6'). The shaft (11) is hollow downstream from the helical vane and has openings (6") in the final section. A truncated cone collar (14) and a flap door (7) with adjustable height, facilitate compression inside the channel (4).

Abstract: A method and apparatus are disclosed for extracting finished juice from an initial juice including substantial solids or for extracting fluid, preferably finished to a high degree, from any slurry including substantial solids, wherein the slurry is introduced into one end of a cylindrical screen, the cylindrical screen being driven in rotation for centrifugally urging the slurry against the screen and causing fluid from the slurry to pass through the screen.

Abstract: A press for the expression of liquid from liquid-containing substances, comprising a stationary container 2 which has a filling opening 3 and an emptying opening and a rotating screw conveyor 4 made up of a screw shaft 6 with screw-vanes 5, located in the interior of the container. The screw conveyor is covered over by a flexible membrane 13 secured in pressure tight fashion to selected portion of the screw conveyor to rotate therewith. Pressure means flows in the space 15 between the conveyor screw shaft 6, the membrane 13, and the screw vanes 5 so that pressure is exerted on the liquid containing substances located in pressing space 16.

Abstract: A worm press for mechanically separating liquid/solid mixtures comprising a feed region and a pin-barrel pressing region. The worm has at least one flight, each of which flights is interrupted so as to enable the flight to pass the stationary pins in the pin-barrel region. The downstream ends or points of the worm flight portions formed by the interruptions are specially shaped in order to increase considerably the strength and service-life of the highly stressed points. This is achieved by reducing the size of the thrust flank, so that the flank subtends an angle of from 20.degree. to 50.degree. relative to the line perpendicular to the worm axis. Desirably, the thus-angled profiled tip region of the flight portions are interchangeable.

Abstract: The press installation includes a screw rotatably mounted in a cylinder. A very high pressure is produced to separate liquids from a mixture, with the separated liquid being drained off through bore holes in stationary pins at the location where it is released. In the discharge zone, the screw is devoid of threads whereby the annular cross sectional area between the screw core and the cylinder is increased. This extends the retention time and thus the amount of dehydration of the material as it passes through the discharge zone. Additionally provided in the discharge zone are annular offsets around the screw core in the vicinity of the pins, which prevent the penetration of solids into the drainage bore holes.

Abstract: In a continuous press of a screw blade type, a driving shaft is rotatably secured to a frame by means of thrust bearings at both ends of the driving shaft, a screw drum having an increasing diameter towards center is disposed around the driving shaft to rotate therewith, a pair of screw blades are helically arranged around the screw drum symmetrically with respect to the center of screw drum, and an outer drum having a number of small filtering holes is arranged around the screw blades. A pair of inlets for introducing raw materials to be pressed are provided at both ends of the outer drum and an outlet from which the pressed raw materials are discharged is also provided in the outer drum at its center. Since repelling forces applied to the screw blades are cancelled each other, no thrust force is applied to the driving shaft and the bearing.

Abstract: The invention provides a helical screw press for processing grape crop in which a filter tube diverges from a predetermined section of its length in downstream direction such that the divergence enables the grapes to be released and prevents formation of an impermeable crust in the filtering tube thereby permitting total pressing and increased flow rate.

Abstract: An apparatus for producing relatively uniform size high quality ice particles comprising a generally cylindrically-shaped ice forming chamber, a rotatable auger disposed in said chamber and adapted to cause ice formed on the inner side thereof to be formed into a generally cylindrically-shaped ice body, an ice discharge member disposed at one end of said chamber and being provided with a plurality of circumferentially arranged ice discharge openings overlying said cylindrical body, whereby rotation of said auger causes said cylindrical body to move toward and into engagement with said ice discharge member so that portions of said body are forced into said openings and are thereby compacted to remove ice make-up water therefrom, the dimensions of said openings being selected so that flow passages are provided between peripheral portions of the ice body moving through the ice discharge openings and the peripheral walls of said openings to permit ice make-up water to flow back toward the freezing chamber.

Abstract: In the case of an apparatus for dewatering and plastifying water-wet mixts of materials for manufacturing explosives, as for example mixtures for producing propellent charges, using a screw extruder with one or more screws having kneading and conveying elements and a housing, possibly made up of axial sections, with a filling port for the said mixture as wetted with water, certain steps are taken for stopping the formation of slurries at the back end or part of the screw extruder, that is to say at the filling port there is an outwardly widening drain port with a drain duct joined thereto in which there is a conveyor for clearing the expressed water and the solids therein and moving them to the back end of the screw extruder.

Abstract: A two-stage, screw-fed vertical mechanical separator for separating a low viscosity material from a high viscosity material, wherein the bulk of the low viscosity material is removed in the first stage and the high viscosity material is heated as a result of mechanical working through a restriction into a second stage and subjected to a vacuum to flash off residual low viscosity material.

Abstract: A bark processing machine comprising a cylindrical tube with a driven screw disposed therein has a helical member on the screw formed by a plurality of highly abrasion-resistant and interchargeable segments. Preferably the segments have a stepped seat co-operating with a stepped seat on the pressure side of a base member of helical form welded to the core of the screw, the segments being secured to the base member by screws.

Abstract: A screw press dehydrator provided with a cake cutter which is formed of a plurality of stationary plates and sliding plates each containing circular holes and disposed alternately around a screw barrel at a position closer to the discharge outlet side thereof, with a screw laid through the circular holes. A smaller circular hole is provided in each of the sliding plates. A revolutionary motion is imparted to the sliding plates such that the centers of the circular holes in the sliding plates may describe a circle of a fixed radius about the centers of the circular holes in the stationary plates and the circumferences of the circular holes in the revolving sliding plates may remain in contact with the circular holes in the stationary plates.

Abstract: An extraction device for separating liquid from a liquid-solid mixture such as sludge or beet slices comprising a screw rotatably driveable in a barrel. The screw has a helical flight formed thereon defining a screw thread. The depth of the thread, in the axial direction of the screw, decreases in a direction opposite to the direction of conveyance of the material.A secondary helical flight formed on the screw defines a second thread for conveying extracted liquid in a direction to the direction of conveyance of the mixture. The two threads are adjacent one another. The second thread is closed at each of its ends, upstream, in the direction of conveyance of the mixture, of an outlet in the barrel for the solid components and downstream of an inlet for the mixture.

Abstract: A grape crusher and de-stemmer comprising a drum (5) having a spiral rotor blade (8) eccentrically mounted in the drum to have a greater clearance at the top and at the bottom. The drum is perforated with perforations (18,19) and means are provided for rotating the rotor at high speed to remove the berries from the stalks and to split the berries so that the juice may be extracted.

Abstract: A screw press built in a modular system is disclosed. Included are a driving gear, wormshaft, and a housing provided with an impact cone and a perforated wall. The size of the perforations is variable during operation.

Abstract: Juice extractor comprising a rotary body having a rotary shaft supported therein in such a manner that the shaft can be rotated and axially moved, and a cover adapted to be screwed to a juice extractor body, the shaft being rotatable with the cover screwed to the juice extractor body, the shaft and cover being combined and rotated together when the latter is loosened, the rotary body being able to be drawn out easily from the juice extractor body.

Abstract: A system for improving the operating efficiency of screw presses which express fluids from fibrous material. This system includes a plurality of worm sections and collars and a hollow main shaft. Fluids are allowed to pass into the hollow shaft through one or more screen bar sections, fitted over the collars. The area of the collar housing beneath the screen bars is generally funnel-shaped toward the longitudinal rotational axis of the shaft, having a drain opening near the apex of the funnel configuration to allow expressed fluids to exit into the hollow drive shaft or into a conduit therein. The worm flights may include hardened wear resistant inserts in the outer peripheral surface which may be integrally cast into the worm section. The worm sections which mate to form a single divided worm may be identical and therefore reversible to reduce production and inventory costs.

Abstract: Screw press arrangement having two or more screw threads arranged side-by-side in a relatively tightly fitting press basket having openings for the drainage of fluid from the material which is fed into the press. At the feeding-in portion the core of the screw element has a relatively small diameter while the screw threads have a large diameter and at the discharge portion the core of the screw elements has a relatively large diameter while the screw threads have a small diameter. Cylindrical sections of the press basket are employed over the largest part of the length of the press and conically tapered sections of the press basket serve as transition and discharge sections respectively. Provision is made for about 20% of the total length of the screw element in the form of the discharge portion to have a uniformly increasing core diameter towards the discharge end and a uniformly decreasing press basket inner diameter.

Abstract: An extraction device for extracting liquids from liquid-solid mixtures comprising a screw rotatable in a barrel the screw having at least one flight helically disposed thereon to define the screw thread, the flight having gaps formed therein, the gaps being dimensioned so as to correspond to the diameter of pins extending radially through the barrel towards the screw axis, the pins having axial bores formed therein for the discharge of liquid the bores being open in the direction of the axis of the screw. The bores are connected to a liquid discharge network.

Abstract: A juice extractor device comprises a juice extractor body having a horizontally disposed slightly conical internal bore and a rotary body mounted in said bore. The juice extractor body includes a material inlet port on the upper side of the base end of the extractor body, a juice discharge port along the lower side of the extractor body, and a residuum discharge port on the upper side of the outer end of the body, and each port communicates with the bore. The juice discharge port includes a filter whose inner surface has a curvature equal to that of the bore surface. The rotary body is disposed adjacent all the ports and comprises an outer circumferential surface which has a spiral compressing portion confronting the two discharge ports and a spiral blade confronting the inlet port. The spiral compressing portion comprises a spiral wing and a valley therealong. The spiral blade, which is continuous with the spiral wing, also comprises a valley therealong.

Abstract: Mixtures of crystals and a liquid, ordinarily comprising the mother liquor of the crystals are continuously separated by feeding the mixture into a screw type press having drainage apperatures, thereby subjecting the crystals with the mother liquor entrapped therein to pressures sufficient to substantially reduce the interstitial space between crystals. Reduction of the interstitial space causes the mother liquor to be forced out of the drainage aperatures thus purifying the crystals. This achieves a more effective separation of mother liquor from the crystals than can be achieved by gravity or the use of a device such as a centrifuge and eliminates the need for a foreign solvent to wash the mother liquor from the crystals.

Abstract: A press for continuous expressing of a liquid from a particulate liquid/solid mass of the type including a conveyor screw or auger advancing the mass through a tubular housing which is provided with drainage perforations. The compression and advancement of the material through the perforate section is effected by the face of a reciprocating annular sleeve, the stroke of the sleeve being so arranged that at least one-half of the travel of said face takes place within the perforated area. The frequency of the reciprocating movement of the sleeve is three cycles per second or more, to reduce resistance to the passage of the mass through the housing. The device is capable of a considerable increase in dewatering performance, as compared with known devices of the type operating more or less solely with a conveyor screw.

Abstract: An extraction device for treating liquid-solid mixtures such as sewage sludge or paper pulp to remove liquid therefrom, includes a preliminary treatment station. The preliminary treatment station comprises at least two interchangeable perforated containers located on a displaceable receiver turntable beneath which a stationary disc is coaxially located. The stationary disc is provided with an aperture eccentrically disposed thereon, the aperture having a cross-sectional area corresponding to the cross-sectional area of the lower end of the container located on the turntable and to the cross-sectional area of an inlet aperture provided in the extraction device.By rotating the receiver turntable in a timed sequence a container is always moved beneath a filler tube, filled and further rotated. The solid components drop to the bottom of the container and liquid is discharged through the perforations provided in the container and the mixture thus has liquid removed in a preliminary treatment.

Abstract: A worm press, especially for pressing vegetable matter, e.g. in the pressing of oil from oil-bearing seeds and fruits, comprises a worm having a plurality of worm sections and a housing within which the worm rotates and which is formed with rings defining axially spaced constrictions for the pressed mass between the worm sections. The worm has annular frustoconical shoulders juxtaposed with frustoconical flanks of the respective rings so that the flanks of each ring and shoulder define a respective constriction which is of a width adjustable by relative axial displacement of the worm and the housing, the rings being fixed in the housing and the shoulders being fixed on the worm.

Abstract: A predrainer type screw press for dewatering highly liquid materials having a feed and pressing screw in which the body of a portion of the feed section of the press is cylindrical and the body of a portion in the pressing section of the press is frusto conical having its small diameter end contiguous with the cylindrical body and of a smaller diameter. The feed portion of the screw is partially surrounded by a bar screen for permitting draining of free run liquids from a material to be dewatered. A pressure assisted overflow in the input hopper is provided to limit the material head in the hopper to prevent slippage and ensure positive feed. Baffles are provided to absorb energy from input material having a high velocity to prevent sticking of material to the screw. Pressing section filter screens are hinged to open out for easy access for cleaning and have a liquid tight seal at the ends when closed.

Abstract: An apparatus for producing and collecting a liquid extract and a pressed dry by-product from a mash of fibrous material includes an extraction chamber and a mechanism for compressing the mash of fibrous material within the extraction chamber to extract the liquid and form a pressed dry product therefrom. The extraction chamber includes a material inlet opening for filling the chamber with the mash, a liquid outlet opening for collecting the liquid extract, and a by-product outlet opening for collecting the dry by-product. The compressing mechanism expells the dry by-product from the extraction chamber once the liquid has been extracted from the mash. The mash is compressed within a movable work station, and the dry by-product is expelled from the extraction chamber by moving the work station and discharging the dry product in accordance therewith.

Abstract: A roll to be rotatably inserted within a juicer housing is formed in a brimmed spiral at an upper part thereof and in a coiled spiral at a lower part thereof, whereby raw juice is instantly made by a simplified mechanism and an easy operation.

Abstract: Apparatus for separating the juice and pulp of fruit or vegetable material comprises a base incorporating a drive mechanism, a case attached to the base and having a conical bore with the axis thereof extending horizontally between end walls of the case, a rotary member rotatably mounted in the case and driven by the drive member, the rotary member comprising a cutting blade portion and a pressing portion. The case is provided on its upper side near the wide end of the bore with a material inlet opening, on its lower side with a liquid outlet opening having a filter therein, and on a lateral side near the narrow end of the bore with a residual solids outlet opening. The cutting blade portion is spiral and has portion disposed near and confronting the material inlet opening. The pressing portion is conical (but oppositely disposed to the conical bore) and has portions disposed near and confronting both the liquid outlet opening and the residual solids discharge opening.

Abstract: A chips-deoiling machine, which is characterized in that a group of separators consisting of a number of single separators being spaced controllably in equal intervals in relation to the neighboring separators, which group of separators is provided within a carrying passage through which chips thrown into a chips-charging port are carried toward a chips-discharging port with the aid of the rotation of a screw shaft, and that the cutting oil contained in said chips is separated through the respective gaps between said single separators in the process of said chips passing from one side of the interior of said group of separators toward the other side.

Abstract: A process and an apparatus for mechanically dewatering municipal sewage sludge or peat. The undewatered feed material is passed into the first end of a cylindrical porous wall and pressurized within the cylindrical wall by a rotating screw conveyor, which also transports the solids toward the second end of the cylindrical wall. The screw conveyor comprises a central shaft which has at least two built-up sections of gradually increasing diameter providing a compression ratio of 2.5:1.0. The flight depth of the screw conveyor increases by a factor greater than 2.0 after each built-up section. The distance between the edge of the screw conveyor blade and the inner surface of the cylindrical wall and the structure of the openings in the wall have specific dimensional limitations. Fibrous additives may be used to aid in dewatering peat and secondary sludges.

Abstract: Apparatus for the expansion of oil bearing seeds and of the kind comprising at least one screw (11) rotatable in a barrel (10) for conveying seed through the barrel from one end to the other, there being a die plate (14) having orifices (15) therein at the output end of the barrel and through which the seed material is extruded by the action of the screw or screws, there being a plurality of throttle needles (17) having portions (19) of tapering cross-section and movable linearly with respect to said orifices thus to vary the effective cross-sectional area thereof in response to conditions within the barrel such as temperature as detected by a temperature sensor (22), the cylindrical wall of the barrel being either wholly plain or in part comprised by a plurality of circumferentially spaced axially extending bars forming a press cage, the position of the throttle needles ensuring control of the state of the seed material prior to extrusion through the die plate.

Abstract: A counter current extractor in which material to be extracted is caused to move in counter current with an extracting liquid by a screw conveyor characterized in that the direction of rotation of the screw conveyor is intermittently reversed. A process for extracting soluble and dispersible materials using such a counter current extractor is also disclosed.

Abstract: Apparatus for separating the juice and pulp or residual matter of fruit or vegetable material comprises a case having a substantially conical bore. The case has a material inlet opening on the top which communicates with the wide end of the bore; a juice outlet opening (with a filter therein) on the bottom which communicates with the bore; and a residual matter outlet opening on one side which communicates with the narrow end of the bore. A motor-driven rotary member is rotatably mounted in the bore. The rotary member has a spiral cutting blade portion for cutting the material into pieces and a spiral pressing portion connected to the spiral cutting blade portion for pressing and squeezing the cut pieces to extract the juice therefrom. The rotary member cuts material entering through the inlet opening into pieces, and feeds the pieces toward the narrow end of the bore while squeezing the pieces to separate the juice and the pulp or residual matter.

Abstract: An extruder for oilseed products, grain mash, and other materials includes an elongated screw rotatably disposed in a bore formed in a tubular housing. The screw is characterized by a plurality of separate threads of progressively decreasing pitch toward a discharge end of the screw. The separate threads are spaced apart and thread portions of constant pitch include gaps to provide clearance for radially inwardly projecting pins disposed in the housing and projecting into the material flow path for mixing the material to prevent solidification thereof and clogging of the extruder. The screw shaft includes spaced apart annular collars which comprise backflow dams for the material being conveyed through the extruder. The tubular extruder housing is of modular construction and is adapted to be used with various combinations of tubular inserts and a plurality of stacked annular rings forming the extruder bore.

Abstract: Apparatus for recovering oil, especially edible oils, from oil-containing fruit and seed in which immediately upon cleaning the fruit and seed, this oil-bearing material is subjected to cold pressing without prior heat treatment to recover a portion of the oil and the residue is thereupon extracted.The apparatus comprises a worm press formed with a perforated cylinder and a worm rotatable in said cylinder, said worm and said cylinder are subdivided along their lengths into a plurality of sections by respective shear gaps and throttles. The depth of the helical groove between flights progressively decreases toward the shear gaps and, in general, along the worm. The thread depth can range between 2 and 12% of the outer diameter of the worm which is preferably constant over the entire length thereof. Each flight may have a progressively decreasing pitch angle toward the outlet side and can be between 7.5 and 15.

Abstract: A slurry separator utilizes the power inherent in the pressurized slurry from the slurry pump through a reaction nozzle to drive a rotor, with the slurry distributed through the nozzle being distributed over the surface of a conical grid. The rotor structure also drives squeegee-like blades which scrape the solids downward inside the cone readying screen for the next discharge, and then sweeping them down into a cylindrical auger chamber where they are compacted downwardly against an inverted conical floor to further squeeze moisture through the sides of a housing cylinder. The conical floor of the compacting cylinder presses up against the particulates to be compacted with a resistance that is proportional to the speed of the rotor, achieved through the use of a centrifugal governor. This action makes it tolerant to variations in nozzle flow volume (pressure) and converts energy output into optimum separation.

Abstract: A lime sludge press unit comprising at least two pairs of press rolls, the lime sludge web passing, supported by an endless wire, through their press nips and moisture escaping from the lime sludge therein. After the first pair of rolls is located a lime sludge treatment screw transversal to the lime sludge web and which breaks up the pressed lime sludge web and carrying helical threads starting at its ends and opposite in direction so that these both transport the lime sludge from the margin of the web towards its center.

Abstract: Material obtained from animals, poultry, or fish and containing edible flesh along with normally inedible relatively hard or tough components, such as bone, gristle, tendons, etc., is fed in ground condition into one end of a perforated conduit that has a conveyor srew therein which progressively decreases in conveying capacity from the feed end of the conduit to an imperforate discharge end thereof. Such inedible components are compacted within the imperforate discharge end of the conduit by an extension of the conveyor screw prior to discharge following build-up and conveyance along the interior surface of the perforate portion of the conduit as a filter mat through which edible flesh is forced toward and through the perforations of the conduit to provide a substantially bone-free edible product. The discharge passage surrounding the .[.exeension.]. .Iadd.extension .Iaddend.