Abstract: Unloading conveyor systems are provided. Some unloading conveyor system embodiments have a transport configuration and an operating configuration. In some embodiments, the unloading conveyor system comprises a ramp assembly a side conveyor system, and an unloading conveyor system. In some embodiments, each side conveyor optionally includes an extension wing and a backboard.

Abstract: Systems and methods for identifying a status of components of hydraulic fracturing units including a prime mover and a hydraulic fracturing pump to pump fracturing fluid into a wellhead via a manifold may include a diagnostic control assembly. The diagnostic control assembly may include sensors associated with the hydraulic fracturing units or the manifold, and a supervisory control unit to determine whether the sensors are generating signals outside a calibration range, determine whether a fluid parameter associated with an auxiliary system of the hydraulic fracturing units is indicative of a fluid-related problem, determine whether lubrication associated with the prime mover, the hydraulic fracturing pump, or a transmission of the hydraulic fracturing units has a lubrication fluid temperature greater than a maximum lubrication temperature, or determine an extent to which a heat exchanger assembly associated with the hydraulic fracturing units is cooling fluid passing through the heat exchanger assembly.

Abstract: Disclosed is a mixing and guniting device of a new type for a TBM, wherein the device comprises a concrete inlet pipe (1), a four-way pipe (15), a nozzle (4), an agitator motor (5), a longitudinal swing oil cylinder (6), a flow mixer, a lateral swing oil cylinder (16), a telescopic oil cylinder (7) connected to a big arm, and a controller, one end of the telescopic oil cylinder (7) being provided with a connection plate (12), the four-way pipe (15) being fixed on the upper part of the connecting plate (12), two interfaces in the upper part of the four-way pipe (15) being respectively provided with an air inlet pipe (2) and an accelerator inlet pipe, a measuring sensor connected to the controller being provided in the air inlet pipe (2), two interfaces in the lower part of the four-way pipe (15) being respectively provided with bent pipes (8), the other ends of the bent pipes (8) being in communication with the flow mixer, the nozzle (4) being provided in the upper part of the flow mixer, the concrete inlet pi

Abstract: A modular conveyor assembly employable with a materials mixing system is provided that includes an elongate frame supporting a motor driven axle, an idler axle, and a plurality of rollers supported in individual rotational fashion by the frame, and a belt and chain subassembly configured to be cycled rotationally about the axles and rollers, where the belt and chain subassembly includes first and second chains each attached along first and second sides of the belt, respectively, so that the belt and chains move in unison, and wherein the frame is configured to be detachable from a materials mixing system without the need to disassemble substantial components of the modular conveyor assembly.

Abstract: A mobile concrete mixing unit has an aggregate bin divided into two compartments by a water tank provided within the aggregate bin. A hydraulic reservoir is provided within the water tank in order to cool the hydraulic fluid within the hydraulic reservoir and warm the water within the water tank. The water tank also helps to keep the aggregate warm and flowable when used in low temperatures. A lower portion of the water tank includes sides that slope inwardly so that aggregate within the bin can drop freely onto a conveyor belt without bridging between the water tank and the sidewalls of the aggregate bin.

Abstract: The present disclosure allows concrete to be produced on the work site, as and when required, and to limit the space occupied by the production plant.

Abstract: In at least one embodiment of the present invention, a device for mixing and dispensing a bone cement mixture is provided. The device comprises an injector housing having a chamber for containing a first and a second bone cement component and a second housing having a chamber for containing a flexible wire mixing element. A plunger actuates within the chamber of the second housing to transfer the wire mixing element to the injector housing for mixing the first and second bone cement components to form the bone cement mixture. The plunger rotates the wire mixing element to mix the bone cement mixture. Thereafter, the wire mixing element is withdrawn from the injector housing and the injector housing is assembled with an injector handle. A plunger coupled to the injector handle advances through the injector chamber to dispense the bone cement mixture from the device.

Abstract: A process for stabilizing plaster includes: a) providing a heated HH-plaster; b) feeding the hot plaster in a moistening device having walls heated to at least 100° C.; c) injecting water and/or steam into the moistening device in conditions that such not yet moistened surfaces of the plaster are exposed to the injected water and/or steam; d) maintaining an atmosphere in the moistening device at a level of the dew point in the range of 75 to 99° C.; e) feeding the moistened blend into a curing device; f) maintaining an atmosphere in the curing device above 75° C. for at least 3 minutes; g) feeding the moistened and cured blend into a drying device; and h) drying the moistened and cured blend. Also an apparatus for moistening ?-hemihydrate plaster includes a rotating drum with lifting blades inside where all walls in contact with the product are externally heated at a temperature above 100° C.

Abstract: The invention relates to a cement silo structure for a mining machine comprising a mixer, a cement silo for cement and a feed apparatus for feeding cement to the mixer. The cement silo is a separate unit that may be transferred by means of transfer means between a use position on top of the mining machine and a filling position that differs from the use position.

Abstract: In at least one embodiment of the present invention, a device for mixing and dispensing a bone cement mixture is provided. The device comprises an injector housing having a chamber for containing a first and a second bone cement component and a second housing having a chamber for containing a flexible wire mixing element. A plunger actuates within the chamber of the second housing to transfer the wire mixing element to the injector housing for mixing the first and second bone cement components to form the bone cement mixture. The plunger rotates the wire mixing element to mix the bone cement mixture. Thereafter, the wire mixing element is withdrawn from the injector housing and the injector housing is assembled with an injector handle. A plunger coupled to the injector handle advances through the injector chamber to dispense the bone cement mixture from the device.

Abstract: A wet mixer apparatus and method for its use, the mixer having a vertical mixing chamber for forming a wet slurry of a cementitious slurry and water. The vertical mixing chamber is designed to provide the required amount of mixing to provide thoroughly mixed, uniformly thin slurry within a mixing residence time that allows for adequate supply of slurry to ensure continuous operation of an associated cement panel production line. Gravity feeding for separate supply of cementitious powder and water to the slurry mixing area of the chamber without pre-mixing of the powder and water is also disclosed.

Abstract: A pigmentation dispenser utilizes a hopper having two rotors therein, a first rotor above a second rotor. The second rotor moves the pigmentation material through an outlet opening and deposits it on a conveyor containing a concrete mix. The concrete mix and pigmentation material are then moved to a mixer which mixes them together. A cleanout is also in communication with the hopper and the second rotor can be reversed to move the pigmentation toward the cleanout.

Abstract: A portable concrete plant for producing ready mix concrete proximate to a location where the ready mix concrete is used. The portable concrete plant includes storage regions for storing components used in the ready mix concrete. The portable concrete plant also includes a slurry mixer for preparing slurry that is used in the ready mix concrete. The portable concrete plant further includes conveying systems for conveying the components from the storage regions and from the slurry mixer to a system discharge port.

Abstract: The present disclosure provides a blender apparatus that can be used to prepare a slurry from carrier fluids and solids. In a preferred embodiment, the blender includes a mixing tub system, a fluids intake system, a solids intake system and a slurry delivery system. The fluids intake system preferably includes a first intake pump and a second intake pump that independently or cooperatively draw fluids into the blender. The slurry delivery system preferably includes a first discharge pump and a second discharge pump that independently or cooperatively delivery slurry from the mixing tub system.

Abstract: The present disclosure provides a blender apparatus that can be used to prepare a slurry from carrier fluids and solids. In a preferred embodiment, the blender includes a mixing tub system, a fluids intake system, a solids intake system and a slurry delivery system. The fluids intake system preferably includes a first intake pump and a second intake pump that independently or cooperatively draw fluids into the blender. The slurry delivery system preferably includes a first discharge pump and a second discharge pump that independently or cooperatively delivery slurry from the mixing tub system.

Abstract: A first mixer trailer forms the plant frame foundation around a twelve-yard compulsory mixer. The compulsory mixer is mounted for elevation relative to plant frame foundation by hydraulic lifting columns. In system erection, a cement silo trailer is first mounted to the top of the compulsory mixer when the compulsory mixer is at ground level. Thereafter, both the mounted silo and the compulsory mixer are raised and pinned in place by the hydraulic lifting columns so that gravitational discharge of mixed concrete can occur directly from the compulsory mixer to an underlying transporting apparatus, usually a truck.

Abstract: A rotary stop cock is formed so that in a first selected position it can separate a plurality of compartments, in a second selected position can allow for the flow of material from one or more upstream compartments into a downstream compartment, while also allowing air to vent from the downstream compartment through the stop cock and out to the atmosphere, and in another selected position can allow for the flow of material from what was the downstream compartment to what was the one or more upstream components without venting any of the compartments.

Abstract: A first mixer trailer forms the plant frame foundation around a twelve-yard compulsory mixer. The compulsory mixer is mounted for elevation relative to plant frame foundation by hydraulic lifting columns. In system erection, a cement silo trailer is first mounted to the top of the compulsory mixer when the compulsory mixer is at ground level. Thereafter, both the mounted silo and the compulsory mixer are raised and pinned in place by the hydraulic lifting columns so that gravitational discharge of mixed concrete can occur directly from the compulsory mixer to an underlying transporting apparatus, usually a truck.

Abstract: A pulper in a stock preparation system includes a housing with a fiber inlet, at least one water inlet, at least one outlet and an inner chamber. A plurality of stationary pulping foils are attached to the housing and extend into the inner chamber. A rotatable shaft assembly extends through the inner chamber. The shaft assembly includes a shaft, an auger positioned around the shaft and relative to the fiber inlet and a plurality of movable pulping foils carried by and extending from the shaft. A conical valve is positioned in association with the outlet and is selectively movable to open and close the outlet.

Abstract: An improved oil and gas well servicing apparatus for blending and delivering a slurry of fracturing fluid and particulate matter at constant flow rate and pressure to a downhole pump is disclosed. Multiple blending tubs are mounted on a trailer or skid and are manifolded together in a slurry discharge manifold. The slurry discharge manifold combines the slurry discharged by the blending tubs and incorporates pipe sections of equal length to connect the blending tubs to the manifold. It is believed that the slurry discharge manifold and equal length piping provide balanced pressure drop between the individual blending tubs and creates a constant outlet pressure from the slurry discharge manifold. A fluid intake manifold may also be included to distribute fracturing fluid to the blending tubs. Hose connectors on each of the manifolds are provided on both sides of the apparatus for convenient operation from either side.

Abstract: A portable concrete plant capable of producing up to 240 to 300 cubic yards or more of concrete per hour is disclosed in which two hauling trailers, a mixer trailer and an aggregate trailer, both serve as the transport vehicles and as foundation for the completely erected plant. The aggregate trailer includes three bins used respectively for sand, fine aggregate and course aggregate. Weigh belts convey weighed and humidity measured amounts of sand and aggregate from discrete open top bins to a batch aggregate loading belt for batch loading of a compulsory mixer on the mixer trailer. The side of the aggregate trailer is provided with a bulkhead for an earthen or gravel ramp with large width bins enabling a single loader to supply the high volume of sand and aggregate required. The mixer trailer supports a twin shaft compulsory mixer on a foundation pad which is top loading for concrete constituents and bottom emptying to an elevating and concrete discharge point to awaiting trucks.

Abstract: Apparatus for distributing and producing cement mixes, substantially concrete, using an endless conveyor belt movable at the base of separate containers which contain the inert materials and the cement, and a reservoir for the mixing water, to form proportioned mixes in a screw mixer, with unloading of the product simultaneously with mixing; the apparatus comprising a supporting framework, on which are supported, at least one hopper-like prism-shaped container for the inert materials with adjustable discharge openings, and, in a raised position with respect to the hopper for the inert materials, at least one hopper-shaped container with adjustable opening for the cement; an endless conveyor belt being interposed between the framework and the discharge openings of the hoppers for the inert materials and for the cement, which are aligned to each other along an inclined plane; the belt is arranged at an angle along the plane of arrangement of the discharge openings, so as to make contact with, and pass beyond, t

Abstract: A concrete stabilization system which includes a number of subsystems to provide a complete reuse and reclaiming of all concrete which remains unused at the end of the production day, and also reclaims all constituents of washout concrete from a number of concrete mixer trucks following the washing out process. A tower is provided for vertical and tilting motion of a material handling bucket, and a stationary mixer for stabilizing concrete and constituent material for reuse with fresh concrete batches at the start of the next production day or up to four days later. The fully automated system includes a start sequence initiated by the operator of the truck, and the process is then fully automated by a process controller which may be monitored off-site.

Abstract: In a concrete pump for wet spraying, in which standard concrete is pumped to a mixing jet, compressed air and if necessary a hardening accelerant are mixed into the concrete stream, which is applied with the jet and compressed; it is the purpose of the invention in its initial version on the one hand to minimize the fine dust yield at the jet, on the other hand to guarantee the availability of the amount of compressed air needed for the wet spraying process, characterized by a regulating section (20) in which the capacity of the concrete pump (1) forms a standard volume for monitoring the amount of compressed air flowing to the mixing jet (3) in such a way that the relationship of the amount of compressed air mixed in per unit of time to the amount of concrete pumped in per unit of time corresponds to a desired value which produces the smallest fine dust yield when the concrete is applied.

Abstract: An auger conveyor assembly including a helical auger infeed section having interrupted auger flights which communicate with an offset, commonly driven outfeed section including a helical ribbon auger and whereat both augers simultaneously blend the mixture at a controlled speed differential. A surrounding housing includes a formed length of rubberized channelway and means are provided for varying the tilt angle of the housing, whereby the blending rate and contained volume of mixture are controlled relative to an outlet port.

Abstract: The apparatus allows mixing of a solid and a fluid continuously to facilitate downhole operations, especially gravel packing. The apparatus comprises a solids hopper, with preferably an internal auger, to meter the solids flowrate. The solids drop into a second feeder which empties into a mixing chamber. Liquid can be directed into an annular space formed in the mixing chamber around the periphery of the second auger, or could be piped into the second auger itself. A triplex pump is connected to the mixing chamber and draws the mixed solid and fluid and pumps it to sufficient pressures for use in a wellbore.

Abstract: A centrifugal bowl is intermittently cleaned of concentrate by a scoop which projects into the bowl and is indexed in a direction axially of the bowl and moved radially of the bowl to enter each in turn of a plurality of annular grooves formed on the bowl surface. The fluidized material in the groove enters the scoop and is extracted from the scoop by suction.

Abstract: A method and apparatus for producing asphaltic mix for roadway use is disclosed, and which comprises a primary plant which is designed to be located remote from the point of use, and a separate satellite plant which is designed to be located relatively close to the point of use. The primary plant heats and dries the stone aggregate, segregates the aggregate by size, and mixes the aggregate with a small amount of liquid asphalt so as to suppress the dust. The resulting pre-mixed product of the primary plant is then transported by truck to the satellite plant, where it is stored and then mixed with a further quantity of liquid asphalt to render the mix suitable for roadway use. The primary plant performs the functions which require substantial equipment and space, and which have the more significant environmental impact, whereas the satellite plant may be relatively small and inexpensive, and its operation makes no significant environmental impact.

Abstract: A machine for conditioning granular materials includes a dual section chamber through which a transport belt travels and in the first chamber of which are a pair of closely spaced counter-rotating heads so driven that the material is moved toward the narrow gap between the heads. The shafts on which the heads are mounted extend upwardly, are parallel and also are inclined upwardly at a minor angle to the vertical in an upstream direction with respect to the direction of movement of material through the equipment. Each head is equipped with blades of two different designs to perform different functions.

Abstract: A cellular concrete paste mixer unit is provided consisting of a first mixer and an increased number of second mixers. The mixer unit is able to simultaneously produce cement paste and cellular concrete paste. A method of making cellular concrete paste using the claimed mixer unit is also provided.

Abstract: A modularly constructed, trailerable, skid mounted, multi-compartmented concrete mixer and cement storage silo having a plurality of longitudinally aligned, bottom mounted, driven feed chains. In a combination construction, a single motor is cooperatively coupled to the feed chains of each mixer compartment and the feed chain of the cement silo to feed the cement/sand/aggregate in metered quantities to a turreted, separately powered auger where water is added and along the length of which the concrete is mixed. A silo vent column includes a plurality of fabric collection filters and means for vibrationally removing and reclaiming the cement. Air infiltration ports mounted along the bottom of the cement silo and one or more vibrators mounted to the mixer adjacent the sand and aggregate bins prevents crusting. Alternatively, the silo may be self-powered, and/or the mixer and silo may be transported independent of one another and/or without the trailer.

Abstract: The portable continuous mixing device of the present invention comprises a first upper frame adapted to drop the dry concrete ingerdients into the upper end of a hopper. The ingredients drop out of the lower end of the hopper onto a second conveyor which deposits the dry ingredients into the input end of a continuous auger mixer. Water and admix are also added to the input end of the auger mixer and the mixer mixes all of these ingredients and discharges them from a discharge end.

Abstract: The method and apparatus for forming an encapsulation or encasement about a structural member that is particularly well suited for use in a marine environment is disclosed. A two component polymer system for protective and repair encapsulation is pumpable in two separate streams to the location of the structural member to be encapsulated. The two reactive components are combined in a static mixer immediately prior to being injected within the surrounding translucent jacket. By combining the reactive components immediately prior to use, premature set up is avoided and the resulting grout may be directed to flow upwardly in the jacket for enhancing final properties. By suitable coloring of the components, visual monitoring of the final mixing and distribution in the translucent form or jacket of the encapsulation material may be monitored. A field test for determining bond strength of the encapsulation polymer to the structural member is also disclosed.

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: The disclosure describes a method and apparatus for continuous mixing, transporting and placing of large quantities of concrete in which aggregate transported on a belt conveyor is mixed with metered quantities of cement and water adjacent a place of pouring. Alternatively, mixed concrete is transported to a place of pouring protected from the elements on a belt conveyor covered by a tunnel that confines cooled air.

Abstract: A mixer suitable for mixing a particulate material with a liquid. The mixer has a particulate material conduit, and a volute chamber disposed about the conduit. The volute chamber has a liquid inlet and an open lower end through which the particulate material conduit extends, to define an annular liquid outlet of the volute chamber. A transition cone communicates with the liquid outlet of the volute chamber and extends downward from it. At least a portion of the transition cone tapers inward while extending downward from a position not substantially lower than an outlet at the lower end of the conduit, to a position which is not substantially thereabove. Preferably the transition cone tapers as described, from a position above the conduit outlet to a position therebelow. A substantially straight downpipe is connected to, and extends downward from, a lower end of the transition cone.

Abstract: The invention consists of a centrifugal mixer with an upper rotor (3) for projection of particles, which is hard-mounted to rotor (4) allowing centrifuging of fluid (15).The invention lies in the creation of a low-pressure zone within the high-pressure zone of enclosure (23), for introduction of particles (20); this in turn requires the use of disturber (27).The result is a remarkable degree of mixing of the water and cement and has applications for oil field services.

Abstract: A mobile concrete mixer comprising an elongated wheeled frame adapted to be connected at its forward end to a prime mover such as a truck or the like to enable the mixer to be moved from one location to another. An elongated conveyor support is pivotally mounted on the wheeled frame and has a hydraulic cylinder operatively secured thereto to enable the rearward end thereof to be raised to the desired dicharge height. A conveyor belt is movably mounted on a conveyor suport and has an elongated concrete mixer hopper positioned thereover. The lower end of the concrete mixer hopper is open to provide communication between the interior of the hopper and the upper portion of the conveyor belt. A plurality of vertically disposed shafts are rotatably positioned within the mixing hopper and have helical conveyor-like portions mounted on the lower ends thereof and laterally extending mixing paddles positioned thereabove. The rotation of the mixing devices elevates and mixes the aggregate materials in the hopper.

Abstract: The invention comprises a mobile concrete batch plant transportable by highway as a single unit. A cement storage hopper, a cement weigh hopper, and an aggregate weigh hopper are mounted on a standard trailer bed. The cement hopper is loaded to the desired weight from the storage bin, and the aggregate hopper is loaded as desired by a front end loader. A charging conveyor carries discharged cement and aggregate from the hoppers to a point above two oppositely facing mixing drums. The charge is dumped from the conveyor into a load hopper, and from there into a load diverter which directs it into a selected one of the two drums. Water and admixture are added and the mixing drum rotates, mixing the contents and producing concrete. The finished concrete is removed from the drum by reversing the rotation thereof, and is carried from the plant by a discharge conveyor. A second batch may be begun while the first is being mixed or discharged.

Abstract: A loading conveyor for a mobile concrete mixing machine is disclosed wherein the conveyor is provided with a receiving hopper for receiving a supply of material from an external source of supply. The chain and slat conveyor is provided with an elevating portion that conveys the material from the hopper to a delivery portion which permits selective delivery to one of two aggregate supply bins. The floor of the conveyor is disposed between an upper delivery run and a lower return run and is provided with a movable section actuated by hydraulic cylinders to selectively create an opening in the floor over one or the other of the aggregate supply bins. The return run is operable to redistribute piled material within the supply bin during operation of the conveyor.

Abstract: A method and apparatus for continuously producing concrete at a job site is disclosed wherein the machine is provided with separate aggregate supply bins and a cement supply bin which are arranged in a generally linear fashion on a mobile frame and sized to hold at least a standard truck load of material. Delivery conveyors in operative communication with the supply bins convey material from the bins into a mixing auger where the materials are combined with water to produce concrete. A loading conveying is operable to receive different aggregates from delivery trucks and convey the aggregates to the respective supply bins while the machine continues forward movement along a path of travel. As a result, the concrete production machine can produce and discharge concrete in a continuous manner along its path of travel without stopping for frech supplies of materials.

Abstract: An auger swivel for a concrete mixer includes a channel mounted to a bowl. A center member is pivotally connected to a pivot point near the channel and near an outer surface of the bowl. The center member includes a pair of first wings that extend from the pivot point, opposite each other and away form the bowl. Two slides are received in the channel and are positioned away from each other by a ring. Two second wings are provided. One of the second wings is pivotally connected to one of the first wings at one of its ends and pivotally connected to one of the slides at its other end. The other second wing is similarly connected to the other first wing and the other slide. An actuator rotates the center member about the pivot point and causes the slides to rotate around the outer surface of the bowl and about a longitudinal axis passing through the bowl.

Abstract: A mobile concrete mixer comprising an elongated wheeled frame adapted to be connected at its forward end to a prime mover such as a truck or the like to enable the mixer to be moved from one location to another. An elongated conveyor support is pivotally mounted on the wheeled frame and has a hydraulic cylinder operatively secured thereto to enable the rearward end thereof to be raised to the desired discharge height. A conveyor belt is movably mounted on a conveyor support and has an elongated concrete mixer hopper positioned thereover. The lower end of the concrete mixer hopper is open to provide communication between the interior of the hopper and the upper portion of the conveyor belt. Mixing paddles or mixing discs are operatively mounted in the interior of the hopper and are designed to mix concrete materials deposited in the hopper as the conveyor belt is moved upwardly.

Abstract: In a concrete production system, an improved aggregates conveying apparatus includes an aggregates drag conveyor having a lower, conveying run which drags aggregates along a centrally-located, common trough shared by separate fine and coarse aggregates hoppers to a discharge end and an upper, return run which moves through a hollow channel formed in a common wall separating the hoppers above the common trough. An improved cement metering apparatus in the system includes a cement conveyor mounted along a trough below the cement hopper so as to make an endless path around a floor of the trough. Baffle gates at each end of the floor coact with the conveyor to prevent inadvertent flow of cement past the ends of the floor and to only permit metered flow of the cement from the discharge end of the trough. The fine and coarse aggregates, and the cement discharge into a mixing auger where, after water is added, they are mixed into concrete before discharge from the auger.

Abstract: Foundry apparatus for mixing sand with binder ingredients to produce a composite mixture suitable for foundry molds includes a first premixing chamber enclosing a first bladed shaft mounted for rotation about a substantially horizontal first axis operable for conveying and commingling sand with a first binder ingredient to produce a first sand/binder ingredient mixture. A second premixing chamber, separate from the first premixing chamber, encloses a second bladed shaft mounted for counterrotation about a second axis, substantially parallel to the first axis, for conveying and commingling sand with a second binder ingredient to produce a second sand/binder ingredient mixture. A final mixing chamber includes agitators for receiving the sand/binder ingredient mixtures and blending them into a composite mixture while simultaneously transporting the composite mixture to a final discharge station.

Abstract: Mixing apparatus is provided for the production of mixtures of particulate solids and in particular, for the production of various mortar mixtures. The apparatus includes metering means, control means and transfer means for metering out and introducing predetermined quantities of components into a mixer and thereupon, after mixing, delivering the mixed product into means for loading transportation vehicles. The apparatus has no intermediate containers for storing various mixtures of building materials. A mixer is provided which can be emptied residue-free. A self-cleaning conveying system from the mixer to each transfer device is further provided. The lower wall zone of the mixer can be completely opened for residue-free emptying, the opening angle being greater than the angle of slide of the mixing material or residues thereof in the mixer. Such an opening prevents appreciable residues from being left in the mixer and from contaminating subsequent mixtures.

Abstract: A mixing tower for concrete or the like has a series of superimposed prefabricated modules which are connected to one another and include a cylindrical lowermost module, a frustoconical intermediate module with several outlets which is integral with the top of the lowermost module, and several larger-diameter cylindrical modules above the intermediate module. The modules contain prefabricated mixers, controls, scales and/or analogous aggregates which are assembled with the respective modules at the manufacturing plant and are coupled to each other at the locus of erection of the tower, preferably by coupling devices each of which is disposed at the level of connection between the respective modules.

Abstract: A method and apparatus for mixing molten asphalt and granulated rubber including an asphalt input system and a rubber input system for delivering the molten asphalt and the granulated rubber in accordance with predetermined mixture proportions to a two-stage mixing system which mixes those materials to form a consistantly formululated thoroughly blended asphalt-rubber composition.

Abstract: A unique chassis arrangement for the mounting of equipment thereon and a unique equipment arrangement for a ground fed type blender means which is trailer mounted for use in well servicing operations.

Abstract: An apparatus and a process is disclosed for controlled mixing of a mixable material in a high intensity mixer. The system enables instantaneous, precise and continual monitoring of a batch in a high intensity mixer which heretofore could not be achieved. The process comprises the steps of feeding a batch of material into a high intensity mixer, agitating the batch in the mixer, monitoring batch temperature separately from mixer temperature and discharging the batch from the mixer when the batch temperature reaches a final predetermined level. The apparatus includes means for monitoring batch temperature in a high intensity mixer separately from mixer temperature, and means responsive to the batch temperature to discharge the batch when the batch temperature reaches a final predetermined level.