Abstract: A plasticating apparatus and method for its use including a rotating screw having a helical flight disposed within and cooperating with the inner wall of a heated barrel with said barrel provided with inlet and outlet openings so that particles of resinous material are introduced through said inlet opening to a helical valley extending along said flight to be plasticated by said screw and advanced towards said outlet opening. A barrier extends along said helical valley to divide said helical valley into coextensive side by side helical valley sections. The barrier extends in a path which is non-parallel and alternating with respect to the helical flight so that the pitch of the barrier is alternately greater than and less than the pitch of the helical flight. The height of the barrier is less than the height of the flight so that the resinous material overflows the barrier due to changes in width of said side by side helical valley sections.

Abstract: A single or twin-screw device is used to incorporate additives in a thermoplastic plastics material melt. The or each barrel of the extruder includes a first feed aperture for the introduction of the melt and a second feed aperture downstream thereof for the introduction of the additives. A screw is mounted on a shaft in each barrel and includes a core and a helical flight. In the region of the second feed aperture, the flight is replaced by alternating disc members and spacer members mounted on the shaft. The diameter or major dimension of the disc members is approximately equal to the combined diameter of the screw core and its flight while the diameter of the spacer members is approximately equal to that of the screw core. The disc members have profiled downstream faces. The disc and spacing members increase mixing and consequently throughput in the region of the second feed aperture.

Abstract: A toner cartridge includes a hopper having two inclined lower surfaces. A toner outlet port is formed in one of the lower surfaces. A toner-supplying auger is located within the toner cartridge near the lower surfaces to guide toner. A toner-receiving plate is loosely mounted on the inclined lower surfaces of the hopper to be vibrated. This plate has an opening through which the toner may fall from the hopper onto the auger. Two pins protrude from the periphery of the auger. As the auger is rotated, the pins strike the toner-receiving plate, thus vibrating the plate. As the plate is vibrated, the resultant stirring guides the toner to the opening. The toner guiding means are arranged to substantially superpose the lower surfaces of the cartridge.

Abstract: A mixing machine operable to receive quantities of waste material and an inert material in separate hoppers for conveyance to a mixing chamber for uniform mixing thereof in prescribed ratios is disclosed wherein each hopper is provided with rearwardly directed augers to pull material away from the opening from the hopper to the mixing chamber. The mixing chamber includes a rotatable flail rotor operable to engage the supplies of materials being fed thereto and effect a mixing thereof prior to being discharged to a mixing auger for final mixing of the two materials before discharge from the machine. Each component of the machine is hydraulically driven to provide independent operation thereof relative to any other component of the machine. An additive hopper is also provided to discharge a selected amount of an additive into the mixing chamber for selective neutralization of the waste material.

Abstract: An extruder screw and a method for extrusion to achieve high output rates with thermally sensitive plastic materials and without thermal degradation problems involving the use of a single flight metering type extruder screw having an initial feed zone, distal metering zone, and a transition zone interconnecting the feed and metering zones. In particular, improvements in the extrusion of thermally sensitive plastics such as PVC are achieved through use of a compression ratio of approximately 2:1, a constant lead and pitch, and a proportioning of the length of the feed zone, transition zone, and metering zone relative to the total length of the zones of 27-33%, 23-25%, and 45-48%, respectively. To achieve cooler and more uniform mixing with rigid PVC, polyethylene and like materials, an improved arrangement for using rings of mixing pins is provided.

Abstract: The apparatus is for the extrusion of thermoplastic and rubber-like materials, more particularly an apparatus which has a feed means or hopper adapted for hot or cold feed of the selected materials. The apparatus has an extruder screw-type forcing zone followed by a straining refining zone, a straining means adjustable to the acceptable particle size and arranged to refine agglomerates to the acceptable particle size, and numerous circumferential grooves which inherently develop the fast forward flow of the fluent phase material and is arranged to place the developed fluent phase material at the entrances to the straining or refining openings. The apparatus has an adequate straining opening length to provide for full extrusion capacity; intensively shears and leads off all of the process material, crossing the tooth top once only thereby achieving uniformity of processing.

Abstract: An apparatus which mixes developer material in the chamber of a developer housing. An auger transports the developer material in an axial direction from one region of chamber to another region thereof. In addition, as the developer material is being advanced in the axial direction, it is being moved in a radial direction substantially perpendicular to the axial direction of movement. In this way, the charge characteristics of the developer material are provided.

Abstract: An extruder for processing wood particles, shavings or sawdust is particularly useful for the production of a refined product exhibiting a large number of separated, individual fibers each of a relatively long length as is desirable in the production of a fiber core for a composite particle board. The extrusion apparatus comprises an elongated barrel and a flighted screw rotatable within the barrel, with the final downstream section of the screw being of a configuration to sequentially present three processing zones each having a compression region, a restricted region and a decompression region. The three processing zones of the final screw section cooperate with a compression region and restricted region formed in the final head section to choke the advancement of wood materials through the extruder sufficiently to enable satisfactory processing of the same without the use of a final die or restricted orifice disposed on the outlet of the extruder barrel.

Abstract: A plasticating screw having a mixing section comprised of two flow channels separated by barrier flights having axially spaced undercut sections and areas of compression and decompression in each channel. Inhomogeneities in the material being plasticated are distributed in both the forward and back directions by means of pressure driven cross-flows caused when the material encounters a section of a channel having a decreasing depth adjacent an undercut section of the barrier flight.

Abstract: A agitating and supplying device arranged in a powder developer cyclic path of a developing apparatus comprises a pairs of flanges, a plurality of first supplying members and a plurality of second supplying members, all supplying members being arranged between both of the flanges. By rotation of the agitating and supplying device, a developer is transferred while being agitated in the axial direction and the centrifugal direction thereof and supplied on the surface of a magnet sleeve roller.A mold for molding the agitating and supplying device, comprises a plurality of mold members opening in the radial direction with respect to the axis of the device, the number of said member being the same as those of the first supplying members. The flanges, the first supplying members, and parts of the second supplying members of the agitating and supplying device are molded integrally by the mold.

Abstract: A chiller which subjects a food product flow to a continuous controlled cooling treatment with water includes a tank with an inlet end and a discharge end, an auger having flights mounted rotatably within the tank, a perforate cylinder mounted within the tank around the auger to substantially contain the auger and food product while allowing water within the tank to pass in and out of the cylinder, and a plurality of baffles which each extend substantially radially inwardly from the perforate cylinder between two adjacent flights of the auger. When the auger and cylinder rotate, the baffles agitate the water and food product by carrying the food product sidewardly and upwardly out of the water, and then allow the food product to tumble back into the water. Additionally, the chiller preferably include two air manifolds mounted within the tank below the intended water level 42 outside the cylinder along its entire length.

Abstract: The device for processing bone cement includes a mixing station with a stirrer for mixing the components of the bone cement under vacuum. The device also includes a resting station in which the mixed ingredients may be stationed for a resting period, processing period and curing period. The temperature-dependent reaction time on the polarmarization reaction can be taken into account in determining the discrete time intervals by means of a temperature sensor for sensing ambient temperature. Acoustic and visual signal generating devices are also provided to indicate the end of each time intervals.

Abstract: A blender vehicle apparatus includes a vehicle having a vehicle frame. An internal combustion engine driven hydraulic power package is mounted on the vehicle frame. A plurality of liquid additive storage tanks are mounted on the frame adjacent the power package. An operator's work platform, including a control station, is mounted on the vehicle frame adjacent the storage tanks on a side thereof opposite the power package. A hydraulically powered blender assembly is also included, and a hydraulically powered lifting apparatus is mounted on the vehicle frame for moving the blender assembly between a lowered position and a raised position. The raised position of the blender assembly is located above the vehicle frame and adjacent the work platform on a side thereof opposite the storage tanks.

Abstract: For bonding particularly radioactive wastes into a binder, a transporting and mixing device is used which transports the mixture to a storage tank prior to the hardening. The wastes are transported into the mixing zone by gravity and aided by the conveyor helix which also imparts additional wall cleaning action through the dry conveyor zone. A single or multi-component binder is concurrently transported in a direction lateral to the mixing tool to the mixing zone. The mixture is conducted in a straight-line extension of the transport and mixing direction to an outlet to which the storage tank is connected.

Abstract: The present invention relates to a rotation screw for mixing, for use with an extruder for forming by forcing out a volume of synthetic resin or a mixture of synthetic resin with additives including glass or carbon fiber, calcium carbonate, etc, having a series of centrally situated mixing recesses of large width and a plurality of mixing recesses of small width arranged on both sides of said wide mixing recesses, both of which are helically formed, in specified mixing positions, in the periphery of the rotational screw, arranged in helically adjoined relationship, and partially communicated transversely of the helical direction with one another so that the amount of delivery becomes great and the highly intimate mixing can be effected.

Abstract: A series of preferably superimposed low inclination troughs containing serial inclined blade rotating mixers and transporters is provided to react dry materials and liquids, and in particular borax with water and acid, in a manner which avoids the formation of refractory lumps and the like. Those are at least two series of rotating blades to both mix and lift the materials into a gas drying stream passing along the troughs. A shearing type grinder or hammer mill is positioned intermediate of the troughs to grind or break up the material part way through the apparatus. Material is discharged from the apparatus in a dry finely comminuted form which does not form lumps upon standing.

Abstract: A co-rotating twin-screw kneader has a casing which has two axially parallel bores, defined by the casing wall and which intersect with one another in a region to form gussets in said casing wall adjacent the intersecting region. Two axially parallel shafts which are arranged to be driven in the same direction of rotation are each arranged in a respective one of the bores and multi-flight kneading disks having crests associated with the casing wall are mounted in non-rotary manner on at least part of the length of each shaft. Each kneading disk on one shaft is associated with another disk on the other shaft in a plane perpendicular to the axes of the shafts and the disks are arranged to be moved past one another in a virtually clearance-free manner in the intersecting region of the bores.

Abstract: In a developing station functioning on the principle of cross-blending in an electrophotographic printing device, two mixing screws running in opposite directions are arranged at a distance from one another. The first mixing screw is situated in a mixing trough provided with a plurality of oblique slots and comprises two mixing strips in the delivery region of the developer mix which are offset by 180.degree. and which neighbor one another. A scraper strip having an actual scraping region and scraping teeth is situated above the two mixing screws. A metering baffle is arranged at an angle relative to this scraper strip, this metering baffle extending through the teeth of the scraper strip and including baffles at its lower end for controlling the flow of the developer mix.

Abstract: A device for continuously preparing a hydraulically setting mass comprises a tubular housing having a downstream outlet opening and an upstream supply station for a dry component material of the mass, the supply station including a storage bin for the dry material. A driven rotating shaft extends from the storage bin through the tubular housing towards the outlet opening, rotation of the shaft causing a feed flow in the direction of the outlet opening, and the rotating shaft is equipped with a dosing screw feeding the dry material out of the storage bin, a plurality of radially projecting mixing blades for mixing the material fed by the dosing screw, and an implement for finely granulating the mixed material downstream of the mixing blades, the granulating implement being comprised of at least two interdigitating comb-like elements, one of the comb-like elements being carried by the shaft for rotation therewith and another comb-like element being affixed to the tubular housing.

Abstract: Mixing device for embedding biologically harmful wastes in a solidifying binder, includes a tubular housing, an assembly of a pre-mixer, a pass-through mixer and a discharge pump having rotatingly movable parts disposed along a common rotational axis and in substantially vertical direction within the tubular housing, and a drive motor mounted at the upper end of the assembly for rotating the movable parts in common, the movable part of the pre-mixer being centrically disposed in the housing, and the movable part of the discharge pump being eccentrically disposed with play in the housing.

Abstract: In a mixing apparatus with a mixing rotor (17) and a mixing chamber (20) with exit openings (29), the rotor and chamber are relatively movable from a mixing position (FIG. 5), in which there is a clearance (43) between the rotor and the wall of the chamber, to a dispensing position (FIG. 6), in which there is no or substantially no clearance. In the mixing position the material (40,41) being mixed circulates (44) within the mixing chamber, and in the dispensing position the rotor (17), being adapted to urge the mixed material (45) towards the exit openings (29), pumps the mixed material out through the exit openings (29) in the form of pasty strands (46) or the like.

Abstract: A rice bran extruder apparatus maintains a continuous flow of bran with appropriate heating to stabilize the bran to prevent information of free fat acid and rancid oil. A supply hopper includes a rotating paddle to stir the bulk bran for continuous gravity feed of the bran into a feed conveyor mounted immediately beneath the hopper. The feed conveyor is aligned with the bran extruder to supply bran to the inlet opening. The extruder includes a flighted rotor and terminates in a conical discharge nozzle. Extrusion of the bran results in heating of the bran to stabilize the lipase, destroy bacteria and produce a stable bran providing oil and an edible end product. The flighted rotor has closely spaced flighting and at least 12 agitator elements secured between the flights for at least the last four flights to establish a continuous movement of the powdery rice bran through the extruder and positively prevents blow back of the bran.

Abstract: A mixer for food products and the like in commercial quantities comprises a horizontally elongated body with a trough bottom in which rotates one or more horizontal drive shafts carrying an agitator in the form of a helical ribbon or worm of a radius matching that of the trough bottom. The ribbon supports a number of scraper units on it, each scraper unit including a scraper body having a broad face facing toward the trough bottom, the broad face terminating in two opposed relatively sharp edges. The scraper bodies are mounted for rocking movement so that the leading edge will be forced into scraping engagement with the trough bottom and will remain in engagement with the trough bottom even though the trough is wavy or uneven. Either of the edges of the scraper body can be the leading edge, depending on the direction of rotation of the agitator drive shaft. The vessel preferably is formed with a pair of arcuate troughs which have a circumferential arc of 180.degree.

Abstract: This invention relates to apparatus for continuously varying the pressure within a screw channel of a plasticating machine by way of a variable restriction in the screw channel. The apparatus includes a cylindrical barrel, a shaft rotatable within said barrel having a substantially circular cross-section and a longitudinal axis for rotation concentric with the barrel. The shaft is provided with a helical screw channel which is defined between successive turns of at least one helical flight integrally formed with the shaft. At least one radially movable first member is disposed at a right angle to said axis within the channel at a location along the axis and is located within the channel at a location along the axis at which the material being processed is substantially melted.

Abstract: An improved auger is used for conveying flowable materials, such as liquid and semi-solid manure, through a bed of a container such as a manure spreader and out through a discharge opening. The auger has a shaft with a back end and a front end, a continuous blade, and paddles for discharging the manure. The continuous blade extends radially outwardly from the shaft and includes helical portions and at least one plate portion which is substantially perpendicular to an axis of the auger. The plate portions extend between the helical portions of the blade to make the blade substantially continuous. The rotation of the auger causes helical portions of the blade to accelerate the manure in a direction of the front end wall and causes the plate portions to slow the movement of manure so that the rate of flow of manure is controlled and boiling action of manure against the front end wall of the container is inhibited.

Abstract: A blending apparatus particularly adapted for blending or mixing candy, cookies, nuts or fruit with the material of a cold flowable substance, such as ice cream, includes a blending container, a rotatable auger having a rotatable cutter displaceable into and out of the container, and a device for causing recirculation of at least a portion of the ingredients within the container during mixing. The auger is rotatable within the container with the cutter being rotated at a different angular velocity from the auger. The cutter is effective to cut large portions of the ingredients in the container into smaller portions.

Abstract: An improved process and apparatus for producing a uniform organic-filler-blended resin composition from a mixed material of a thermoplastic resin and a coarse organic filler raw material such as waste paper by the use of a specified extruder, without the necessity of fine-grinding of the organic filler raw material prior to feeding it into the extruder are provided, which process and apparatus are characterized by providing many projections and grooves surrounding them on the surface of an intermediate part of the screw in the extruder and specifying the size of the gap between the outer surface of the screw part and the inner surface of the cylinder opposed thereto.

Abstract: An apparatus for transporting and at the same time cooling sensitive and perishable goods such as sliced vegetables by means of an auger including a transport screw disposed in a trough-like housing provided with an insulating jacket and an insulated lid arranged in spaced relationship from the transport screw, wherein the transport screw has coils with bulged rounded outer edges which are spaced from the trough housing wall and wherein a coolant injection pipe is disposed in the space between the transport screw and the lid of the trough for introducing a cooling fluid into the trough while the goods are moved therethrough thereby providing direct contact of the cooling fluid with the large surface area of the goods to be cooled for efficient and rapid cooling of the goods.

Abstract: A seal and discharge assembly for use in the processing of farinaceous material is disclosed in which the dry food mix is introduced into a continuous pressure cooker assembly without undue pressure loss and while maintaining a regulated flow of material into the continuous pressure cooker assembly. The seal and discharge assembly comprises an extension of the root of the pressure feeder screw upon which is mounted a compacting ring for plug sealing and flinger paddles for breaking-up the plug seal and positively conveying the farinaceous material making up the plug seal into the continuous pressure cooker assembly. The root extension and the radially mounted flinger paddles are housed in a discharge chamber between a pressure feeder screw barrel and the continuous pressure cooker assembly.

Abstract: Apparatus for continuously treating solids, with at least one liquid includes a first screw conveyor having first agitators positioned along the peripheral margin of each section of the thread of the screw conveyor for agitating the solid pieces being conveyed in the area between adjacent sections of the conveyor, and second agitators positioned along the shaft of the first screw conveyor for mixing the liquid with the solids within the area between adjacent sections of the thread of the first screw conveyor, and a second screw conveyor having agitators positioned along the peripheral margin of each section of the thread of the conveyor for agitating the solids being conveyed thereby, in the area between adjacent sections of the thread of the second screw conveyor, and liquid passages associated with the peripheral margin of each section of the thread of the second screw conveyor for allowing liquid introduced to the second screw conveyor to pass through the sections of the conveyor.

Abstract: The invention provides a screw conveyer which has a helically wound member (23) attached to the screw which member extends from each turn of the screw towards the next turn and is of decreasing diameter along the screw.

Abstract: A device for the removal of substances on the inner walls of agitated reaction vessels includes scrapers. The scrapers are adjustable angularly or displaceable toward and away from the walls of the vessel and supported from an agitator shaft to scrape off material accumulating on the walls of the reaction vessel.

Abstract: A continuous conveyor composting apparatus to provide a method of completely mixing semi-solid sewage sludge, compost material and refuse into a non-compacted, readily compostable material. A variable capacity mixing chamber is provided to receive a partially mixed product from several hopper bins which are equipped with variable speed auger systems. The mixing chamber is equipped with a compost-throwing member which mixably engages the product to lift, separate and fluff the material.

Abstract: A mixer having an open top mixing box accommodating a pair of lower augers and a pair of upper paddle conveyors drivably connected to the augers. A power box pivotally mounted on one end of the mixing box is drivably connected to the augers with releasable drive connections. The power box is a motor driven power transmission assembly that can be disconnected from the augers and removed from the mixing box. A movable door associated with the bottom of the mixing box is used to selectively open and close a discharge opening allowing mixed and blended material to be discharged into a conveyor.

Abstract: A helically moving fluid body leaving an extruder screw and brought into contact with rotating shearing means, undergoes laminar displacement, is then guided through a stationary sleeve along undulating linear paths of travel of relatively short axial length, and thereafter undergoes further laminar displacement and discharges into a die.During movement of the fluid mixture along the undulating linear paths of travel subdivision and blending of substantially all of the material in the fluid body, which is not in a fluid state, takes place. Thereupon the blended mixture is advanced to a die member at a desired fluidity and temperature in response to die requirements. Heating of the barrel is significantly reduced and energy conservation of an appreciable nature is achieved.In carrying out mixing as noted above there is employed a modular mixing apparatus constructed with multiple processing means suitable for shearing, kneading, flow diverting, dispersing, blending and the like.

Abstract: This invention is directed to an apparatus and method for melting and conveying plasticated material. The invention includes a screw conveyer which has a shaft with one or more helical flights rotating in the bore of the barrel of an extruder. At a location in the screw channel after which the melted material will be dispersed into the remaining solids bed, there is provided a groove in the shaft of the screw through which the semi-melted or agglomerated material is diverted by a protrusion which extends across the channel of the screw to the groove. The additional heat transferred to the material resulting from the enhanced distribution of melted and solid material which occurs as the semi-melted material is diverted through the groove and back into the screw channel improves the quality of the processed material.

Abstract: Portable apparatus for agitation of animal waste materials collected in a livestock confinement pit which can be inserted into tubes passing through the sidewall of the pit is disclosed. An elongated housing in which is mounted a high speed propulsion screw and a hydraulic drive mechanism is shown. Openings are provided in said housing to allow intake into the enclosure above said propulsion member and an exhaust opening is located in said housing at the lower end of the housing adjacent said propulsion member. A method for intermixing of solid and liquid animal wastes contained within a confinement facility collection pit is described.

Abstract: Cellular chlorinated polyvinyl chloride resin is made in an extruder that is characterized by a combination of multiple flights and a plurality of open slots in the mixing section to facilitate mixing of the resin and a blowing agent whereby a rigid thermoplastic cellular product of low density is made that has a predominantly closed cell structure.

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 method and apparatus are provided for maintaining polymer particles in readily recoverable, discrete form, and for injecting the particles into a pipeline hydrocarbon by disposing particulate polymer within a storage hopper having a cone bottom and an auger extending upwardly from the bottom, rotating the auger to cause the polymer particles to revolve in the hopper, reversing the rotation of the auger to pass polymer particles downwardly into a mixing chamber below the hopper, the particles passing through a rotary metering valve, or optionally, a bin activator, intermediate storage and rotary metering valve at the upper end of the chamber, simultaneously spraying a liquid such as oil or water tangentially in the chamber optionally agitating the chamber and removing a slurry of particulate polymer and the liquid from the chamber and injecting the slurry into a pipeline hydrocarbon.

Abstract: An extruder screw for use in the processing of a food mash is disclosed, in which, the mash is introduced into an inlet opening in an extruder barrel and conveyed by a substantially coextensive screw to an outlet or discharge opening and then through an extrusion die. The extruder screw comprises a single flight helical screw section initiating at the inlet opening and terminating within the extruder barrel, with a flightless section immediately following thereafter, and, a further helical screw section immediately following the flightless section and extending to the proximity of the outlet opening of the extruder barrel.

Abstract: An agitator wiper for a tubular chemical vessel in which agitation of the vessel contents is achieved by a blade positioned helically around a central rotating shaft and wiping of the vessel walls is achieved by segmented plates positioned along the blade and constructed to provide wiper tips which wipe all portions of the vessel walls.

Abstract: An internal mixing apparatus for mixing plastic materials, especially raw rubber, has a mixing chamber defined by substantially parallel cylindrical individual chambers. Each of these chambers holds a rotating shaft and the two shafts rotate in opposite directions. In one embodiment of the invention, the shafts have a cylindrical outer surface on which is disposed at least one principal conveying and mixing vane. The vanes on the two parallel shafts are disposed in mirror symmetry so that the ridges of the vanes roll off against one another with or without contact. The principal vanes terminate ahead of the end faces of the mixing chamber, thereby defining free passages permitting the transverse motion of the material to be mixed. Within these passages, the shafts carry scraping vanes for preventing the accumulation of stationary material.

Abstract: Apparatus for mixing metered quantities of cement with metered quantities of water has a horizontal housing with a first section having an inlet for admission of cement, a cylindrical intermediate section which receives cement from the first section, and a mixing chamber which receives cement from the intermediate section and further receives metered quantities of water by way of a pipe. A feed screw is rotatably mounted in the first and intermediate sections to convey cement toward and into the mixing chamber. The thread of the feed screw carries radially outwardly extending paddles which are located in the first section and prevent accumulations of cement in the space around the corresponding portion of the feed screw. The mixing chamber is connected to the intermediate section by a hinge and contains a rotary mixing element whose shaft is separably coupled to the core of the feed screw.

Abstract: An extruder machine for processing thermoplastic materials such as low density polyethylene, the extruder incorporating a body having a bore therethrough with a rotor or screw journalled therein. The rotor has several successive mixing and pumping sections. The mixing sections on the rotor are multiple flighted defining primary and secondary channels having their discharge and entrances respectively blocked or restricted by annular dam arrangements. The rotor includes a plurality of adjustable dams, arranged across the channels, permitting a variation in the degree of homogenization which may be performed upon the extrudite. The dams may be radially displaceable to vary the distance between the radially outer surface of the dam and the surface of the bore.

Abstract: An apparatus for carrying out polymerizations from the gas phase comprising a sealable reactor with a spiral stirrer which is rotatable in the reactor about a vertical axis to generate circulatory streams of the materials employed, in which the stirrer rotating within the reactor is surmounted by a stirrer rod, which extends upward beyond the uppermost flight circle of the stirrer and is attached to the stirrer at a certain distance from the axis of the stirrer, the distance of the side face of the stirrer rod from the reactor wall is at least 10 mm, and the surface of revolution of the moving rod matches the contour of the reactor in this zone.

Abstract: A rotary drum-type collecting vessel for receiving and transporting refuse or other bulk material, comprises, a hollow rotary collecting drum having an inside wall, and includes an opening at one end which is covered by a cover plate which covers the opening and has a frusto conical interior surface which projects into the collecting drum. The frusto conical surface terminates in a frustum plane within the drum. It includes a lower portion with a charge opening and it carries a spirally extending feed blade on its surface with pushing elements in the form of ribs defined therealong and rotating therewith so as to force bulk material in an action, such as by a raking worm, into the collecting drum. The material is also pressed therein by an action such that by a thrust worm in a zone between the inside wall of the rotary drum and the frustum plane.

Abstract: In a mixing device adapted to mix materials flowing therethrough from an inlet end to an outlet end in which there are provided agitating elements as on a rotating shaft, there is provided an internal recycling means to impel a portion of the material, flowing from the inlet end toward the outlet end, countercurrently to the main flow, i.e., toward the inlet end to effect an in situ recycle. There is disclosed a pelleting apparatus having a horizontally-disposed substantially cylindrical shell, a rotating, pin-equipped shaft, inlet and outlet means for feeding material to be pelleted and pelleting liquid into and through the device, the shaft having mounted thereon, at least over a length thereof, at least one reverse-flight or blade adapted to cause motion toward the inlet end of the device of a portion of the mass being pelleted.

Abstract: A spiral stirrer unsupported at one end, for mixing and stirring free-flowing solids, especially in continuous gas phase polymerization. The stirrer comprises a plurality of turns formed from hollow profiles. The botton end of the spiral, facing the bottom of the stirred vessel, is attached to a hub seated on a drive shaft. In the vicinity of the transition from the hub to the first turn of the spiral, a distributor spiral is provided to avoid flowless zones in the hub region. Uniform distribution of the gas entering at the bottom of the vessel is also achieved.

Abstract: An interlocking mixer-auger mechanism especially adapted to transport and mix developer compositions containing toner, or similar materials, prior to the feeding of such materials through an output port in the operation of a xerographic copying machine.