Abstract: A paint tinter system includes a plurality of canisters disposed in a circle about a rotatable plate. An orbiting plate, driven by a single motor, is connected to drive arms, each of which is connected to a crank arm of a stirrer in one of the canisters. The connection is made through a lost-motion device in a cap covering each canister. The cap captures the end of the drive arm, whereby the cap may be removed and hinged out of the way for providing access to the canister. An impeller is freely mounted for rotation in a socket in the bottom of the canister. The upper end of the impeller is driven by engagement between a pair of driver bosses rotated by the crank and edges of a top plate on the canister. Thus, when the cover is removed, the impeller may remain unmoved or be lifted from the socket for cleaning.

Abstract: An apparatus of making a soft ice-drink comprises a mixing mechanism including a container containing a liquid material such as syrup and into which shaved ice pieces are discharged, rotary blades, rotatably supported within the container, for mixing together the liquid material and shaved ice pieces and smashing the shaved ice pieces into granules of ice, and a drive motor for rotating the rotary blades at high speeds, and an ice shaving mechanism, disposed on an apparatus bed and above the mixing mechanism, including a shaver casing having a slit to which a shaving blade is exposed and a shaved ice dischage chute opened to above the container, and rotatable blades, provided within the shaver casing, for cooperating with the shaving blade to shave ice blocks charged into the shaver casing.

Abstract: An impeller apparatus for dispersing a gas into a liquid in a vessel includes a centrifugal flow turbine, the blades (621) of which are formed with a substantially stream-lined trailing surface terminated by a sharply pronounced spine (63). The blade is formed by a plate-like initial blank being cut to a shape having a central line of symmetry, the blank then being folded along the straight line of symmetry.

Abstract: A feed mixer includes a main chamber in which a rotor is located. The rotor includes at least one elongated wiper rigidly connected to a rotor bar for wiping contact with a curved wall portion of the chamber. The rotor bar is prevented from incurring any substantial pivotal movement and thereby maintains a substantially consistent and uniform angle between the wiper and the curved wall portion and wiping contact therewith. The rotor also includes a square in cross section axial center tube to which the rotor arms are connected and a circular in cross section axial drive shaft is positioned in the tube and extends the substantial length thereof. Right angle elements are positioned around the periphery of the shaft matingly engaging the inside right angle corners of the tube to lock the shaft to the tube for rotational movement therewith.

Abstract: An improved method for mixing and/or drying particulate material is achieved with a housing having a substantially cylindrical portion and a tapered portion arranged coaxially therewith. A motor-driven rotor is arranged within the housing and is provided with a plurality of impeller blades which are affixed at one end to the shaft member. The impeller blades extend substantially radially outwardly toward the internal surface of the housing means. Each blade has a dual pitch characteristic which, in combination with a direction or rotation permits establishment of first and second flows of the fluidized material in opposite directions in the housing. The first and second flows are combined in the tapered section of the housing wherein there is provided a terminating impeller which agitates the combined flows in response to rotation of the central shaft. A material flow of the particulate material with sufficient velocity will fluidize the material being mixed or dryed.

Abstract: Mixing apparatus having a sealed impeller shaft provided by a seal unit which supports the shaft and to which a motor drive unit may be detachably connected. When the motor drive unit is disconnected, the mixing apparatus may be sterilized, along or together with the vessel containing the material to be mixed and to which the seal unit is attached. The seal unit has a seal assembly with a movable part engageable by a drive shaft in the drive unit when the drive unit is mounted on the seal unit. The movable seal part is biased to move to a position against a mounting plate on which the drive unit is mounted when the drive mounted is removed so as to provide a static seal. When the drive unit is attached to the seal unit, the driven shaft engages the moveable seal unit part and moves it to another position away from the mounting plate, where the seal assembly may freely rotate with the impeller shaft and maintain a dynamic seal.

Abstract: A kneader includes a vessel having an upper cover, at least one mixing blade provided in the vessel for mixing or kneading a powder material supplied in the vessel, sealing means for sealing between the vessel and ends of a shaft of the mixing blade extending through the vessel, bearings for supporting the shaft of the mixing blade on both the sides, blade driving means provided at one end of the shaft of the mixing blade. Each of the sealing means is provided on a side of the vessel with at least one air purge opening through which air is caused to flow toward the shaft of the mixing blade or into an interior of the vessel to form the sealing means as an air sealing construction, thereby completely preventing the powder material to be mixed from leaking through clearances between the vessel and the shaft by jetting air from the air sealing construction into the vessel.

Abstract: A method and apparatus for removing appendages from seeds are described. The apparatus includes a chamber to contain the seed to be threshed. Mounted rotatively in the chamber is at least one filament spool means which, upon rotation, causes filament to be paid out and thresh the seed. Means are attached to the chamber to draw a gaseous medium through the chamber to suspend the seed with appendages in the threshing zone. After the appendages are removed, the appendage-free seed is discharged from the cylinder. The invention finds particular use in the threshing of seeds armed with appendages that are difficult or impossible to remove with existing seed threshing equipment.

Abstract: A floating vertical shaft downflow directional mixer apparatus including a float, a motor driven propeller mounted on an upright propeller shaft below the float, and a draft tube extending downwardly from the float and having a lateral discharge outlet. The float is arranged to support the mixer with the propeller shaft generally upright when the mixer is not in operation. The draft tube and lateral discharge outlet are bilaterally symmetrical with respect to a median plane and a thrust reaction line is attached to the lower portion of the draft tube generally symmetrical to the median plane to counteract the reaction forces on the mixer produced by the stream discharged from the discharge outlet and maintain the propeller shaft generally upright when the mixer is in operation.

Abstract: An invertible/reversible tool for use in a rotary food processing appliance is provided for performing predetermined processing operations in a first position and other predetermined operations in a second upside down position in a working bowl, which bowl contains a drive shaft for rotating the tool about a vertical axis in the bowl. The tool has an elongated hub with first and second sockets positioned on opposite ends adapted to engage the drive shaft for rotating the elongated hub in different directions depending on which socket is engaging the drive. Raised ridge keyways extending vertically for at least more than half the length of the elongated hub are provided to provide a positive driving relationship between the elongated hub and an encircling blade hub which carries reversible blades extending outwardly relative to the axis of rotation from opposite sides of the blade hub.

Abstract: Apparatus for mixing liquid and liquid suspension mediums in vessels with a mixing impeller shaft system of a composite of fibrous and plastic material of a structural configuration to enable the use of such material in commercial and industrial applications where the reaction loads of the medium on the system militate against the use of composite fibrous and plastic material. The system utilizes impellers having blades which distribute the reaction load through a hub on a mounting area of a shaft with keys and keyways in a manner to avoid stress risers unamicable to the composite material and which can cause failure thereof. Separate keys and keyways are provided to oppose the thrust due to the reaction loads and to oppose the torque due to such loads. Plural thrust keyways may be used to enable the impeller to be located at different positions on the shaft and at selected heights above the floor of the mixing vessel.

Abstract: A domestic ice-cream maker for insertion in a freezer consisting of a container in the form of an annular trough, a mixing blade being arranged in the trough for rotating around the axis of the trough and being driven by an electric motor which is characterized by the provision of a fan or fans arranged above the container to direct a stream of air downwardly onto the surface of ice-cream mix in the container to produce rapid freezing of the ice-cream mix when the ice-cream maker is inserted in the freezer compartment of a refrigerator. Preferably, the electric motors are driven by a pack of rechargeable battery cells contained in the ice-cream maker.

Abstract: A mixing device and method wherein liquids are rotatingly mixed in a disposable plastic bag mounted in and outer receptacle. The bag is provided with extending portions which overlap the open top of the outer receptacle. The interior sidewalls of the outer receptacle are inwardly sloping defining a truncated conical interior. When the bag is filled with liquid to be mixed the bag conforms to the sidewalls and does not twist around a rotating mixing element disposed through the open tops of the bag and outer receptable for mixing the contents of the bag. The mixing element is centered in the bag by a cap-like cylindrical structure that engages the top of the outer receptacle.

Abstract: A blender for installation under kitchen cabinets includes a housing mounted underneath the cabinet with a shaft detent connection bushing extending downwardly from the housing connected to a motor which is electrically controlled to provide various speeds to the bushing into which a shaft disengagingly connects having blending blades at the lower end with a cup shaped container with annular threads at the top edge which engage annular threads on the bottom wall of the housing to seal the container around the blender shaft with a switch to shut off the power with the cup container is not in position.

Abstract: A device for preparing a beaten product and including a beater assembly driven rotatively about a generally vertical axis, with an improved beater assembly comprising an elongate rotor body having at least one blade unit formed integrally with the rotor body. Each of the blade units comprising an elongate base member formed integrally with the rotor body and a plurality of spaced blades formed integrally with the base member.

Abstract: Grittiness in soap-containing formulations, one source of which is the reworking of previously processed soap, is reduced in an efficient manner by passing the formulation through a cavity transfer mixer.

Abstract: A mobile mixing device for at least two products coming from storage containers in barrels equipped with internal kneading means, which can be rotated by a kneading head, via a disconnectable coupling, wherein the device comprises a fixed stand having two receptacles able to receive the barrels and a turret supported by the stand, so that it can rotate about a vertical axis, said turret having the storage containers, the kneading head, at least one tube connecting each of the storage containers to the kneading head and means for vertically displacing the latter an upper position permitting a rotation of the turret in order to bring the said head successively above each of the barrels placed in the receptacles of the stand and a lower position in which the kneading means of the corresponding barrel are connected to the kneading head by said coupling.

Abstract: A kitchen device suitable for foaming food materials, comprising a container for reception of food materials to be whipped by a rotary member which is specific in shape and is mounted at the inside bottom of the container, the member being moved about its vertical axis by a driving mechanism provided outside the container. The configuration of the rotary member is substantially a cone containing a side peripheral portion which is concave or inwardly curved in vertical cross-section.

Abstract: An apparatus is provided that is useful for effecting liquid-liquid extraction by contacting a first liquid medium with a substantially immiscible heavier second liquid medium. The apparatus includes either a single mixer-settler unit or two or more such mixer-settler units in series. Each mixer-settler unit includes a vertically extending settling tank. An elongated extraction column extends generally vertically upwardly through the settling tank bottom. The extraction column is open at its top with the top of the extraction column below the top of the settling tank. A mixer is provided in liquid communication with the extraction column for mixing the first and second liquid mediums together to form a dispersion of droplets of one of the liquid mediums in the other liquid medium and for pumping the liquid mediums through the apparatus. The dispersion flows from the mixer upwardly through the extraction column and out from its top into the settling tank.

Abstract: An improved method for mixing and/or drying particulate material is achieved with a housing having a substantially cylindrical portion and a tapered portion arranged coaxially therewith. A motor-driven rotor is arranged within the housing and is provided with a plurality of impeller blades which are affixed at one end to the shaft member. The impeller blades extend substantially radially outwardly toward the internal surface of the housing means. Each blade has a dual pitch characteristic which, in combination with a direction or rotation permits establishment of first and second flows of the fluidized material in opposite directions in the housing. The first and second flows are combined in the tapered section of the housing wherein there is provided a terminating impeller which agitates the combined flows in response to rotation of the central shaft. A material flow of the particulate material with sufficient velocity will fluidize the material being mixed or dryed.

Abstract: An improved apparatus for pressuring a hard frozen comestible, similar to hardened ice cream, while simultaneously subjecting it to mechanical action to reduce the crystal and cell structure of the material to transform it into a soft, smooth and creamy texture only slightly less cold than its starting temperature. The apparatus includes a hopper for receiving the hard frozen comestible to be treated, an auger positioned above the hopper and automatically actuated by movement of the hopper toward the auger to produce conditioning of the comestible by the auger as the hopper and auger move toward one another into an adjacent relationship. The auger is powered by a drive assembly that includes an electrically driven motor and a fluid drive unit to provide a constant drive force on the auger without undue stress on the drive motor.

Abstract: An ice-cream making machine, comprises a receptacle for receiving the liquid ingredients to be used for making the ice-cream, a cooling duct conveying the ingredients from the receptacle to an ice-cream outlet of the machine, an air inlet into the cooling duct, a rotor including a plurality of blades rotatably driven within the cooling duct and effective to atomize the liquid ingredients as particles mixed in air and to direct freezing, and a valve controlling the rate of flow of the air from the air inlet to the cooling duct thereby enabling the machine to vary the density of the ice-cream produced. The machine includes a further valve for controlling the rate of flow of the liquid ingredients from the receptacle to the cooling duct to selectively effect a first rate of flow for producing ice-cream, a lower rate of flow for producing ices, or a higher rate of flow for producing cooled beverages.

Abstract: An apparatus for dispersing pigment in a liquid comprising: a mixing vessel, a stirrer shaft with affixed impeller, a motor for rotating the shaft, and support structure for positioning the rotatable shaft and impeller within the vessel; with the improvement of using as an impeller a wire wheel of radially extending stiff wires, the wheel having corrugated sides formed from the outermost layers of wires. A method of dispersing solids using the apparatus of the invention is also described.

Abstract: The invention relates to a process for producing aqueous and oily, sulfur containing products.The invention also relates to an apparatus for producing aqueous and oily, sulfur containing products, which comprises a feeder, mixing unit and a unit for separating the liquid and solid phases. In the process a dispersion is prepared from lime sulfur solution, a surface active material and oil.In the apparatus the feeder includes a wet mill, the charging pump delivering the suspension thus obtained, the mixing unit is provided with a heating jacket, agitator, a cooler and a unit for separating the liquid and solid phases. The apparatus comprises a further mixing unit with a storage tank equipped with a charging pump and dispergator. The feeder, the mixing unit and the further mixing unit are interconnected by pipes.

Abstract: An impeller having blade members of arched configuration secured at their ends to a central support member such as an impeller shaft. Each blade member is twisted lengthwise through approximately 90 degrees to cause the blade members to produce a conical discharge flow. The blade members may be of unitary construction. A modified impeller blade has individually blade members mounted to a tubular support member. The impeller blade may be used in a multiple manner on a single support member.

Abstract: A homogenizer, with which the homogenization power is minimized while maintaining good homogenization, and with which at the same time the conveying power of the homogenizer is increased. This is achieved via a constant free cross-sectional area within the individual homogenizing stages, and by a hydrodynamically favorable design of the free space which surrounds the tools of the homogenizer. Baffle elements or a subsequently connected second pump stage can be provided.

Abstract: A food frying apparatus includes a housing having a front side, a vessel mounted within the housing to contain oil, the vessel having an expansion zone adjacent the front side, and an oil heating container connected to the vessel, the container being positioned adjacent the front side and in communication with the expansion zone. An electrical heater is mounted on the exterior of the container to indirectly heat oil therein. The oil is forcibly circulated between the vessel and the container by means of a motor mounted beneath the container and a rotor coaxially mounted within the container and coupled to the motor. A plug is axially insertable into the top of the container, and an upper end of the rotor is connected to the plug for axial movement therewith. The rotor has a lower end connected to the motor to enable relative telescopic sliding movement therebetween to achieve coupling or uncoupling.

Abstract: The invention relates to an agitator for the agitation of liquid media, and more specially for use while completely submerged in the medium. The bearings and the coupling for the agitator shaft are placed in a downwardly opening gastrap, there being a gas cushion between the bearings and the coupling on the one hand and the medium to be agitated on the other hand in order to keep the medium clear of the bearings and the coupling and damaging same.The gas cushion may replenished through a supply duct periodically or continuously.

Abstract: A process and apparatus for the continuous production of shaped aluminum alloy-particulate composites. The process comprises metering at a substantially constant ratio a particulate solid molten aluminum alloy containing at least 0.10% by weight of magnesium into a mixing station while continuously vigorously agitating to produce a homogeneous mixture, simultaneously discharging from the mixing station a homogeneous mixture of molten aluminum alloy and particulate solid, transferring the mixture to a forming station and shaping and solidifying the composite.

Abstract: Apparatus for storing and selectively mixing at least two distinct substances in a common package has a container (10) for creating a substance holding chamber (16) in which is disposed a barrier (18) arranged for separating the chamber into at least two compartments (20, 22) each holding a predetermined quantity of a substance different from a substance being held in the other compartment. Provision is made for exerting an external force on the barrier so as to open same and cause communication between the compartments. Subsequent mixing of the substances contained in the compartments is achieved either by continued movement of the barrier or by a separate mixing device.

Abstract: Apparatus and a method for handling a slurry contained in a tank having a slurry inlet and a slurry outlet. The tank has an open top, and a framework on which a plurality of buckets are mounted is located in the tank for rotation about a central axis through a shaft mounted on the upper margins of the tank. The buckets move along a circular path and into the tank to scoop settled particles on the bottom of the tank and then to lift the particles out of the slurry. In one form of the apparatus, the particles are dropped back into the slurry in the tank to thereby eliminate the growth of settled particles on the bottom of the tank to achieve uniform particle concentrations in the slurry. In another embodiment, the apparatus operates as a thickener in which the particles are unloaded from the buckets exteriorly of one side of the tank and carried away by a launder while the liquid in the tank overflows the tank at the opposite side thereof.

Abstract: In this stirrer, the stirrer arms (3, 3a) are arranged radially on the drive shaft (2) and are provided with plates (4, 4a). On these plates, stirring elements (5, 6) are arranged at a distance and inclined relative to one another, in such a way that their shadow areas overlap in the direction of revolution or at least are almost contiguous.

Abstract: A multi-purpose device comprises a freezing tank in which a two speed driven shaft is rotatably held. A whisk or whipping tool is secured to the shaft near the bottom of the tank, and a freezing tool is removably secured in rotation to the shaft, when desired.The device can combine the two basic functions of the complete process of producing ice cream: whipping and freezing, in the same tank.

Abstract: The invention relates to an immersible aerator and/or mixer apparatus to be lowered onto the bottom of a basin or tank containing liquid, often also solid substances, and particularly the invention relates to the supporting structures of the said apparatus as well as to the devices for protecting the motor and power transmission chambers of the said aerator and/or mixer apparatus from the liquid contained in the said vessel.

Abstract: Apparatus for mixing air with liquid, an aerator or oxygenator, comprises a motor or other power drive generally mounted in vertical position on a floating or a fixed structure, the motor having a shaft extending downwards through an opening in the center area of the float or fixed structure and bearing on its lower part a screw pump portion located in a cylindrical volute section just below the water level. When the apparatus is operating, the waste-water is sucked by means of the screw pump from the bottom of the body of liquid at which the apparatus is positioned and is pushed upwards in order to be diffused by means of a centrifugal impeller having outwardly curved blades, at least one of which extends downward to merge with a spiral shaped portion of a blade on the screw pump.

Abstract: A portable mixing device particularly for use with power drills or the like, having a helicoidal flight of coil units of equal dimensions leading up from a bottom, that has a radial edge to scrape material off the bottom of a can and a rounded corner that prevents the edge from cutting into a can, the several coils of helixes terminating at the top in another radial edge with a rounded corner to prevent cutting into the side of the can, with a circular baffle plate spaced a predetermined distance above the top edge of the helical flight to deflect the material being stirred upwardly by the device, outwardly to that it can then circulate back downwardly to effect the mixing circulation.

Abstract: There is provided a mixing device for low velocity and low shear mixing. The device is of special value for mixing of delicate materials, such as cell suspensions, microspheres and the like, as used in fermentors and the like. The device is based on the suction effect obtained by low velocity rotation of a cylinder provided with tangential openings.

Abstract: A small, light-weight stirring apparatus for stirring liquid solutions and suspension comprises a power source, a rotable or vibratory motor and an inexpensive, disposable hollow stirring shaft made of a polymeric material. The inexpensive hollow stirrer is disposed after each stirring operation, thus obviating cleaning of the stirrer.

Abstract: A novel rotor is provided for attachment to the lower end portion of the motor-driven shaft of a liquid-mixing device, such as a liquifier or mixer commonly used in the preparation of milkshakes, malts and like ice cream mixes. The rotor features a one-piece element in the form of a V having a flat bottom and a pair of upwardly and outwardly divergent arms providing mixing blades related in diametrically opposed fashion. A disk having a central opening receives the shaft and is disposed in radial plane spaced axially above the flat bottom and its periphery is affixed to the terminal upper ends of the blade arms. The disk has an annular flange which presents a smooth circular surface that prevents the blades from damaging the mix container during operation of the mixer as well as during removal of the container while the shaft and rotor are still rotating.

Abstract: A pulp diluting apparatus has a cylindrical vessel having the top portion thereof covered with a lid having a pulp inlet, a bearing mounted on the center of the lid, a lower steady support bearing mounted on the center of a bottom end portion of the cylindrical vessel, a rotary shaft held between the top bearing and the lower steady support bearing and provided on the lower portion thereof with rods having scraper plates, a water supply pipe disposed on the bottom end portion of the cylindrical vessel for supplying water into the cylindrical vessel, a valve provided on the water supply pipe for controlling the amount of water to be supplied into the water supply pipe, a driving machine connected to the rotary shaft for rotating the rotary shaft, a torque detector for detecting the torque of the driving machine and controlling the valve of the water supply pipe, and an outlet provided in the lower portion of the cylindrical vessel for taking the diluted pulp out of the cylindrical vessel.

Abstract: An apparatus for agitating a fluid that contains a sludge-like material which is stored in an enclosure, such as a pit, storage tank or pond, includes an elongated frame with a motor and a propeller pivotally mounted within a guard at a lower end of the frame, a linkage assembly attached at one end to the motor and the propeller, and a handle pivotally mounted at an upper end of the frame and connected to the other end of the linkage assembly. The motor and propeller are pivotally mounted so that the propeller is pivotable in a generally vertical direction between a first position, generally along the axis of the frame, and a second upward position, angularly displaced from the first position, for directing the agitation caused by the propeller. In addition, the motor and propeller are mounted within the guard so that the propeller is prevented from hitting the floor of the enclosure when the apparatus is rotated about its longitudinal axis.

Abstract: A soap-containing formulation capable of becoming transparent on working is subjected to shear between two mutually displaceable surfaces. A shear zone is formed in the formulation as the latter is entrained in the surfaces.

Abstract: A mixing apparatus having a bowl lift arrangement which includes a yoke which is attachable to the mixing bowl and which includes only one guide rod for supporting the yoke, the guide rod being located in the forward portion of a support column which supports the drive motor housing above the base of the mixing unit, and the guide rod being centered to extend vertically along and an axis co-planar with the axis of the bowl. The bowl lift arrangement further includes a screw shaft extending parallel to and behind the guide rod and which has one end received in a threaded aperture provided in the rearward end of the base portion of the yoke, the other end of the screw shaft being linked to a handle, turning of which causes rotation of the screw shaft, with the yoke riding up or down on the screw shaft as it is rotated, carrying the bowl up or down.

Abstract: Apparatus for processing meat sections under atmospheric pressure and under a high vacuum, and having, a container of generally square cross-section and having an open top, reinforcing members attached at spaced apart intervals on the exterior of each of the side walls and further reinforcing members on the exterior of the bottom wall, a closure for the top to hermetically seal it, a stirring shaft and arms supported on the closure and a stirring motor with a shaft extending through the closure to the stirring shaft, reinforcing bars extending across the upper surface of the closure, and a hose connection on the closure for connection to a suitable vacuum pump.

Abstract: Disclosed is a battery-operated utensil for mixing and pouring drinks and the like. It uses a separate motor to drive a shaft carrying mixer blades, and a separate motor to drive a pump. The motors are turned on one at a time, and drive the respective shafts directly, thus eliminating the use of components such as gears, clutches or ratchets. The design allows ingredients to be poured into the mixing vessel through a filling chute, without removing the housing which caps the vessel, as well as for convenient removal of the housing when necessary, as for cleaning. Various other features are provided to make the utensil particularly inexpensive to manufacture and convenient to use.

Abstract: The small volume recirculator includes a mixing chamber for receiving recirculated slurry from an inlet arranged to carry the slurry on its return path from the analyzer. An impeller is provided in a housing which is connected to the mixing chamber by way of an opening such that the housing receives the slurry from the reservoir through the opening and provides passage by way of an output tube to the analyzer. The connection between the housing and the chamber is sufficiently direct so that a vortex is set up in the mixing chamber. This provides the mixing. The impeller is rotatably mounted by shaft means which extends above the level of the slurry to a power drive train in avoidance of any shaft seals in the slurry path.

Abstract: A portable spot mixing apparatus (10) including a drive unit (11), a mixing unit (12), a handle (13), and a brake unit (14). The mixing unit (12) serves to stir and mix grain (53) within a specified local area and the brake unit (14) prevents the apparatus (10) from becoming buried in the grain (53) during use.

Abstract: A longitudinally extending housing with end closures forms a closed mixing chamber within the housing. A mixer that has a fluid material inlet at each end thereof with longitudinally spaced, opposed ends forming fluid material outlets and a central peripheral discharge from the mixer between the end outlets is supported on a rotatable shaft that extends through one of the end closures to position the mixer in the mixing chamber. Housing inlet means comprising a pair of conduits communicate fluid to the closed mixing chamber for discharging it thereinto adjacent, but spaced from the end fluid inlets of the mixer, and housing outlet means is aligned with the mixer to receive the central discharge therefrom. The diameter of the mixer is about one-half the diameter of the closed mixing chamber, and the length of the mixer is about one-third the longitudinal extent of the closed mixing chamber. The mixer is positioned substantially equidistant from the sides and ends of the mixing chamber.

Abstract: A device for preparing a beaten product and including a beater assembly driven rotatively about a generally vertical axis, with the beater assembly including a rotor body having vertically spaced upper and lower portions containing recesses, and a blade unit having upper and lower projections receivable within said recesses to connect the blade unit to the body, and with the blade unit being adapted for connection to the body by insertion of an upper one of the projections into an upper recess followed by swinging movement of the lower portion of the blade unit from a position in which a lower one of the projections is offset horizontally from a corresponding one of the recesses to a position in which the lower projection is above and can be moved downwardly into the lower recess.

Abstract: There is provided a mixing device for low velocity and low shear mixing. The device is of special value for mixing of delicate materials, such as cell suspensions, microspheres and the like, as used in fermentors and the like. The device is based on the suction effect obtained by low velocity rotation of a cylinder provided with tangential openings.