Abstract: The present disclosure provides systems and methods for producing a hydrogen storage vessel that is lightweight. The hydrogen storage vessel may comprise an inner body and an outer body structured as concentric rings with a conic interface. The vessel may have four material layers, including a barrier layer, an insulation layer, a fiber knit, and an abrasion layer. The fiber knit may be braided to trap the hydrogen, as the barrier layer may not be completely impermeable. Additionally, the fiber braid may be clamped to the outer body, enabling pressure pushing on the inner body to wedge and seal the storage vessel.

Abstract: According to one aspect of the present invention, a hydrogen gas filling method includes receiving, from a vehicle equipped with a tank to be filled with hydrogen gas and powered by the hydrogen gas, a temperature of the tank before a start of filling; calculating a difference between a preset maximum temperature and the temperature of the tank; calculating a filling speed of the hydrogen gas depending on the difference; and filling the hydrogen gas from an accumulator in which the hydrogen gas is accumulated into the tank at the filling speed calculated via a measuring machine.

Abstract: An intelligent system and method for preparing cryo-electron microscopy samples is provided. The system includes a control center, an ultra-low temperature liquid tank, a sample holding mechanism configured to limit a position of a to-be-processed sample, a sample processing mechanism configured to cut or polish the sample, a position adjustment mechanism, and a sample transfer mechanism configured to transfer a processed sample. In a working process, the control center controls the ultra-low temperature liquid tank to provide a preset temperature environment based on a target sample type, activates the position adjustment mechanism based on position information of the sample holding mechanism in the first chamber to drive the sample processing mechanism to perform processing according to a preset processing route, and activates, based on information about the processed sample to be transferred into the second chamber, the sample transfer mechanism to transfer the processed sample in a preset environment.

Abstract: The present invention is to provide a hydrogen refueling system capable to cool down the H2 pre-cooling heat exchanger fast enough when a FCV enters the HRS, so that there is no or very minimal waiting time for the customer before starting refueling. A hydrogen refueling system including a cryogenic fluid tank that stores a cryogenic fluid, a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the cold and/or cryogenic fluid provided from the cryogenic fluid tank, an inlet line that sends the cold and/or cryogenic fluid to the heat exchanger from the cryogenic fluid tank, an outlet line that collects the cryogenic fluid fed from the heat exchanger, and an injection valve that is provided in the inlet line.

Abstract: Systems, methods, and computer-readable media are disclosed for container chutes for sortation systems. In one embodiment, an example system may include a frame and a chute assembly coupled to the frame, where the chute assembly is configured to pivot from a first position to a second position with respect to the frame. The chute assembly may include a first planar ramp, a first support on a first side of the first planar ramp, and a second support on a second side of the first planar ramp. The chute assembly may include a first pneumatic lift component coupled to the first support and to the frame, and a second pneumatic lift component coupled to the second support and to the frame. The chute assembly may be held in the second position when the first pneumatic lift component and the second pneumatic lift component are in a compressed configuration.

Abstract: A dispenser apparatus that includes a first cascade stage having a first connector configured to connect to and disconnect from a first gas storage vessel, and a first conduit connected to the first connector and having a first valve and a first pressure measuring device, and a second cascade stage having a second connector configured to connect to and disconnect from a second gas storage vessel, and a second conduit connected to the second connector and having a second valve and a second pressure measuring device. A common flow path is fluidly connected to the conduits, and has a dispensing nozzle to connect to a vehicle during refueling. A controller is provided to control the first and/or second valve(s) to perform refueling using gas stored in at least one of the first and second gas storage vessels based on pressure measurements of the first and/or second pressure measuring device(s).

Abstract: A wastewater sewage system is disclosed. The sewage system includes a flow control valve that controls the flow of wastewater through the sewage system such that the sewage pipes in the sewage system are substantially full.

Abstract: There is provided improved laser sintering systems that increase the powder density and reduce anomalies of the powder layers that are sintered, that measure the laser power within the build chamber for automatic calibration during a build process, that deposit powder into the build chamber through a chute to minimize dusting, and that scrubs the air and cools the radiant heaters with recirculated scrubbed air. The improvements enable the laser sintering systems to make parts that are of higher and more consistent quality, precision, and strength, while enabling the user of the laser sintering systems to reuse greater proportions of previously used but unsintered powder.

Abstract: An apparatus for loading a powdered electrolyte into a chamber made in a tubular casing of a craft operating in an underwater environment, comprising: a valve carried by the tubular casing, configured to be arranged in a normally closed position and designed to be moved, as a result of manual operation, to an open position to allow the introduction of the powdered electrolyte into the chamber from outside the casing; a feeder-actuator assembly configured to be mounted on the tubular casing to couple with the valve in a fluid-tight manner and enable the opening/closing of the valve; and an electrolyte tank configured to couple with the feeder-actuator assembly and feed powdered electrolyte by gravity to the actuator assembly. The actuator assembly delimits an elongated internal cavity configured to allow a flow of powdered electrolyte from the tank to the chamber through the valve.

Abstract: A robot system according to an embodiment includes a sensor, an arm, and an instructor. The sensor is configured to detect an interface of a liquid. The arm includes a holding mechanism that holds a container containing the liquid. The instructor instructs the arm to cause the container to enter a sensing region of the sensor while holding the container, so as to cause the sensor to detect the interface.

Abstract: A liner sump dispensing system (10) is disclosed which is used in conjunction with a liner (11) and an intermediate bulk container (12). The liner sump dispensing system includes a liner cassette (40) and a tilting device (41). The liner cassette is mounted to the bottom of the liner. The tilting device includes a tray (51) and a reciprocating pneumatic arm (52) having a pneumatic cylinder (63) and a piston rod (64) pivotally coupled to a rear end (54) of the tray. The tray has a trapezoidal shaped floor (58) and a pair of inclined wings (60) extending upwardly along an incline from the floor. A L-shaped mounting flange (65) adapted to be coupled to the top end of the container is coupled to the end of the pneumatic cylinder opposite from the tray. The actuation of the pneumatic cylinder tilts the tray to tilt the liner bottom end.

Abstract: An apparatus to introduce a defined amount of a second powder into a process container in which a first powder or a powder mixture is present, includes a coupling flange having a cover flap located on the process container. The second powder is introduced into a tubular cartridge mounted displaceably in a transport unit, the latter including a joining flange having a cover flap. The joining flange is joinable to the coupling flange so that the respective cover flaps can be opened, and the cartridge can be pushed through openings thereby provided into the plane of the inner wall of the process container. The second powder is emptied from the cartridge into the process container by a delivery piston. The cartridge may include a piston rod having multiple pistons. Other embodiments include a double piston, a rotatable cartridge core or a rotary closure.

Abstract: A machine for making and dispensing semiliquid and/or semisolid food products comprises a frame (2) furnished with a base (4) and an operating unit (6) for processing at least one mixture for making and dispensing the products. The operating unit (6) is movable at least between a raised position and a lowered position relative to the base (4) through the agency of a respective movement means (8).

Abstract: The invention relates to a method for the pressurized filling of bottles or like containers with a liquid filling material, using a return gas tube protruding into the respective container during a filling phase in order to control the filling level.

Abstract: A transfer system includes a conduit, a support, and a conveyor. The conduit has a first end and a second end and is configured to transfer dry material from the first end to the second end. The support is in contact with at least a portion of the conduit and is configured to maintain the second end of the conduit in a desired position relative to the first end of the conduit during transfer of the dry material from the first end to the second end. The conveyor is adjacent to the conduit and is configured to deliver the dry material to the first end of the conduit from a floating vessel configured to transport the dry material.

Abstract: An apparatus to introduce a defined amount of a second powder into a process container in which a first powder or a powder mixture is present, includes a coupling flange having a cover flap located on the process container. The second powder is introduced into a tubular cartridge mounted displaceably in a transport unit, the latter including a joining flange having a cover flap. The joining flange is joinable to the coupling flange so that the respective cover flaps can be opened, and the cartridge can be pushed through openings thereby provided into the plane of the inner wall of the process container. The second powder is emptied from the cartridge into the process container by a delivery piston. The cartridge may include a piston rod having multiple pistons. Other embodiments include a double piston, a rotatable cartridge core or a rotary closure.

Abstract: The invention relates to a filling system for filling bottles, cans, or similar containers (2) with a liquid filling good, comprising at least one filling element (1, 1a) having at least one dispensing opening (7) for introducing the filling good into the particular container (2) in a controlled manner, means (10) for retaining and pressing the particular container (2) having a container opening (2.1) in a sealing position against the filling element (1, 1a) in the area of the dispensing opening (7), at least one pneumatic device (15.1, 16.1, 19) for producing at least one component of the press-on force, which pneumatic device can be exposed to the pressure (P1) of a gaseous and/or vaporous operating medium. In order to change and/or set the press-on force, a second component of said force is produced by a further hydraulic or pneumatic device (15.2, 16.

Abstract: Disclosed are systems and methods for limiting structural damage to an affected offshore platform and preventing damage spread from the affected offshore platform to another platform during an accident or an emergency condition. An offshore platform arrangement includes a mobile offshore production unit (MOPU), a mobile storage platform and a mobile offloading platform which are disposed at a clearance distance from one another. The platforms are fluidly connected by pipes to allow hydrocarbon fluid transfer therebetween. The pipes are adapted to cease fluid communication of hydrocarbon fluid between platforms for preventing damage spread therebetween. Also disclosed is an offloading system for hydrocarbon fluid transfer which includes a lifting system having an extendable lifting arm and a spreader frame platform rotatably coupled to the lifting arm. The spreader frame platform is operable to support a transfer skid and allow angular adjustment of the transfer skid in a horizontal plane.

Abstract: A container treatment module to be used in a container treatment machine, having a frame at which a turntable and a motor allocated to the turntable and a centering facility which may center a container on the turntable are disposed, and where the container treatment module comprises at least one device for mounting the container treatment module to the container treatment machine and/or another container treatment module.

Abstract: The invention relates to a fraction collector apparatus (1; 1?) for positioning at least one fraction collector nozzle (4), comprising a frame (2) arranged for guiding the at least one nozzle (4) to different positions (22) in order to collect and dispense fractions (6) of a substance to or from containers (8). At least one track (10) is arranged in the frame (2), and in which at least one track (10) an endless movable transporting means (12) is arranged; on which transporting means (12) the at least one nozzle (4) is attached; a first actuating means (18) is connected to said transporting means (12) for actuating said transporting means (12) in the track (10), so that said at least one nozzle (4) is movable in different positions (22) along said track (10). The invention also relates to a method of positioning a fraction collector nozzle (4) by means of such a fraction collection apparatus (1; 1?).

Abstract: A device that dispense dosages of a free-flowing substance has a support column with a horizontal support arm (10) cantilevered thereon. The device includes a holder unit (20) on which at least one movably supported receiving unit (30) is arranged. The receiving unit is designed so that at least one dosage unit (70) can be set into, as well as taken out of, it. The holder unit contains at least one agitation actuator (50) that acts on the receiving unit. The dosage unit can be fastened to the receiving unit by means of a pre-tensioned clamping module (60). For the insertion and/or removal of the dosage unit, the clamping module can be spread apart from a dispensing position into a loading position by means of an opener module that is based on the holder unit. In the dispensing position, the opener module is uncoupled from the receiving unit.

Abstract: A filling device for filling containers with a liquid, including several filling elements, each of the filling elements having a filling valve, a filling tube and a return gas tube, where the filling tubes of the filling elements are arranged at a first common support and the return gas tubes of the filling elements are arranged at a second common support, and where the position of the second common support can be adjusted relative to the position of the first common support.

Abstract: A beverage vending machine is disclosed. The beverage vending machine includes a beverage production unit; a store containing cups; a take-out compartment; at least two cup-holders; and a beverage dispensing device. The take-out compartment is accessible from the outside and has at least two dispensing stations. Each of the at least two cup-holders is configured to support a cup at a respective dispensing station. The beverage dispensing device defines an outlet of the beverage production unit and is operated to selectively engage the dispensing stations.

Abstract: A fill head for depositing hazardous waste materials into a container movable between a filling position seated on the container, and a container exchange position withdrawn from the container; a control arm carried by the fill head directing movement of the fill head between the filling and exchange positions; a drip tray movably carried on a support platform adjacent the fill head for extending underneath the fill head to retain drippings of the hazardous waste material from the fill head when in the exchange position; and, a lifting arm carried by the drip tray engaging the control arm, wherein the lifting arm biases the control arm to raise the fill head from the filling position to the exchange position when the drip tray is extended underneath the fill head so that as the fill head is withdrawn from the container any dripping hazardous waste is captured by the drip tray.

Abstract: Methods and apparatus are disclosed for loading a therapeutic substance or drug within a lumenal space of a hollow wire having a plurality of side openings along a length thereof that forms a hollow drug-eluting stent with a plurality of side drug delivery openings. Loading a drug within the lumenal space of the hollow stent includes a drug filling step, in which the drug is mixed with a solvent or dispersion medium. The lumenal space may be filled with the drug solution or suspension in a reverse fill process and/or a forward fill process. After the drug filling step, a solvent or dispersion medium extracting step is performed to extract the solvent or dispersion medium from within the lumenal space such that only the drug remains within the hollow stent. A stent cleaning step may be performed to an exterior surface of the hollow stent.

Abstract: A device and method for loading catalyst pellets into reactor tubes of a chemical reactor. A direct mechanical force is applied to one or more pellets where bridging occurs that is different from the forces applied to the surrounding pellets in order to break up the bridge so as to allow catalyst particles to fall through an opening into the reactor tube.

Abstract: Apparatus useful for feeding a particulate starter material comprising nutrient and bacteria to a mixing tank, for solubilizing the starter material inside the mixing tank, for promoting growth of the bacteria and for discharging an aqueous slurry comprising the bacteria from the mixing tank. The apparatus preferably has a gravity-flow feeder and discharge port, does not require a pump, and comprises disposable parts.

Abstract: A refueling platform for filling a vehicle tank with liquid hydrogen comprises a base, a lifting device arranged on the base, a support device arranged on the base, which support device is liftable by way of the lifting device, a cryogenic hydrogen filling tank arranged on the support device, and a conveying device. The conveying device is connectable to a filler hose that is adapted for connecting to a vehicle tank. With said refueling platform a vehicle tank can be replenished that cannot be accessed at ground level, for example a hydrogen tank for operating a fuel cell, which hydrogen tank is arranged in the tail section of an aircraft.

Abstract: An apparatus and a method for filling reusable containers employing a plurality of moveable spigots located in a planar rectangular arrangement inside two frames positioned to move back and forth on X and Y axes to position a selected spigot over the open top of a reusable container.

Abstract: A telescoping tube for fuel transfer operations has a fixed part and a moving part, the moving part further having a dynamic sealing system which guarantees the sealing of the moving part against the fixed part, a cushioning system which absorbs the energy of the impact of the moving part against the fixed part in operations for extending and retracting the tube and protection systems against electrical discharges which ground the moving part to the fixed part, the aforementioned dynamic sealing, cushioning and protection systems all being incorporated in a single unit in the moving part of the telescoping tube. Additionally, the invention relates to an in-flight refuelling system for a tanker aeroplane, to carry out in-flight fuel transfer operations to a receiving aircraft, having a telescoping tube with the abovementioned characteristics.

Abstract: An apparatus for filling containers with liquid and in particular viscous media, comprising a filling element which can be introduced at least partially into a mouth of the container to be filled, wherein a filling body of this filling element is configured in such a way that the medium is directed at least also onto a wall of the container, comprising a connecting line for conveying the liquid medium from a reservoir for the liquid medium to the container, wherein the filling element is movable relative to the container in a longitudinal direction (L) of the container. According to the invention, the filling element is movable in the longitudinal direction (L) of the container.

Abstract: A liquid medicine dispensing device includes a rotary unit 12 which rotates while holding a plurality of original drug vials 100, and a conveyance mechanism that conveys a prescription bottle 110 in the horizontal direction on the underside of the rotary unit 12. Each of the original drug vials 100 is connected with a discharge nozzle 17 to which a discharge valve 26 is attached, and an air nozzle 29 connected with a pump and an atmospheric relief valve. When discharging liquid medicine, the prescription bottle 110 is conveyed in advance to a position that is directly below an original drug vial 100 required for dispensing. In that state, the original drug vial 100 is inverted by rotating the rotary unit 12 by 180 degrees, and the discharge valve 26 is opened.

Abstract: In the case of an apparatus for filling tubular or bag-shaped packagings with a paste-like product, said apparatus including a fill pipe (1) and a holder for a casing brake that is arranged at the fill pipe (1), the pull-off movement is effected by means of a pivoting and pulling movement when the fill pipe (5) is pivoted away. This means that the casing brake is able to assume three sturdy positions in relation to the fill pipe (5) whilst not taking up much space and is able to be removed from the pipe (5) in a simple manner for changing a packaging tube.

Abstract: The invention relates to a device for filling one or more product containers with a liquid comprising one or more medicines. The device comprises a housing at least provided in a position of use with an array of medicine containers, at least some of which are provided with concentrated liquid components of the one or more medicines. The housing is also provided with an automatic machine which is adapted to manipulate a syringe for measured take-up of liquid from a medicine container. The automatic machine is adapted to rotate the medicine container transversely of its longitudinal axis.

Abstract: A device for positioning a component thereof along x- and y-axes of the device is provided. The device includes first and second motors, a carriage containing the component to be positioned, a lead screw to position the carriage along a first axis of the device, and a keyed shaft to position component to be positioned along a second axis of the device. The first motor drives the lead screw and the second motor drives the flatted shaft. In some embodiments described herein, the flatted shaft turns a first pulley, which is connected to a second pulley by a belt. The component to be positioned is attached to the belt and moves along a second axis of the device as the belt moves.

Abstract: A dosage-dispensing unit with an interior space, delimited by a lateral wall and a bottom portion. The bottom portion further includes an outlet orifice. The dosage-dispensing unit can be connected to a holder device of a dosage-dispensing device. The holder device is supported by constraints that allow movement in a prescribed direction. The outlet orifice has a central longitudinal axis that is oriented at a predetermined angle relative to this prescribed direction of movement. The internal surface of the bottom portion facing towards the interior space includes a surface region having at least a line segment that starts at the outlet orifice and extends in the prescribed direction of movement.

Abstract: There is described a mobile apparatus for filling an elongated bag with particulate material. The mobile apparatus is adapted for moving along a surface at a controlled velocity, and comprises a receiving means for receiving the particulate material to be filled into the elongated bag. The mobile apparatus comprises a tubular member adapted to extend essentially horizontally into said elongated bag during filling, and a rotary auger extending at least partially into said tubular member from said receiving means.

Abstract: A device for dispensing a dosage includes a base frame, at least one device for receiving any dosage-dispensing unit or functional unit that is compatible to be inserted therein, a holder and at least one drive mechanism. The holder has at least one holding position for a dosage-dispensing unit or functional unit. A weighing cell arranged on a lower horizontal plane of the base frame includes a load receiver to receive a target container. A changing mechanism enables the receiving device to be moved horizontally relative to the base frame. This horizontal shift allows a dosage-dispensing unit or functional unit to be interchanged between the holding position and the receiving device. The changing mechanism also permits the receiving device, together with the drive mechanism, to be moved vertically with regard to the base frame.

Abstract: A machine for filling cups with foodstuff has metering stations having metering modules provided with filling nozzles, respectively, for introducing product flows into horizontally supplied cups. A programmable control unit cooperates with the metering modules in such a way that in a filling process, by means of controlled tilting and/or lifting actions of the filling nozzles, variable filling structures are generated from the product flows in the cups.

Abstract: The invention relates to a beverage container tapping apparatus, with: a transporting device for transporting beverage containers from an introducing position to a first and a second position, a disinfecting device for disinfecting a beverage container fitting, said disinfecting device being assigned to the first position, a tap head device with a tap head and a unit for attaching the tap head to the fitting of a beverage container, wherein the tap head device is assigned to the second position, and a device for transporting a beverage container out of the second position into an empties region.

Abstract: A capsule preparation system includes a syringe holder for retaining a syringe, the syringe holder configured for operating a plunger of the syringe, a supply vial for storing a volume of radiopharmaceutical, and a capsule holder for capturing a capsule wherein the capsule holder is configured for selectively releasing the capsule from the capsule holder. At least a portion of the syringe holder is movable along a first direction and a second direction to position the syringe relative to the supply vial and the capsule.

Abstract: A receiving device in a dosage-dispensing device, which serves to receive any insertion unit that can be inserted in the receiving device, includes a plurality of support arms that are arranged parallel to each other and extend in their lengthwise direction substantially orthogonal to the direction of gravity. At least two support arms are arranged in planes lying above one another relative to the direction of gravity. Each support arm includes at least one support location, so that, when the dosage-dispensing device is in its operating state, the insertion unit can be supported through the support locations against the force of gravity. Each support arm includes at least one protrusion which serves to position the insertion unit in a plane that extends orthogonal to the direction of gravity. The main dimension of the protrusion is directed essentially against the direction of gravity.

Abstract: A slide valve system for a powder or liquid reservoir bottle which closes the reservoir bottle and allows the reservoir bottle to be tipped away from a subjacent dispensing bottle fed by the reservoir bottle. Once the reservoir bottle is tipped away the slide valve can be opened and the reservoir bottle filled. The reservoir bottle can then be closed by the slide valve and tipped back onto the dispensing bottle. Once on top of the dispensing bottle the valve can be opened and the contents of the reservoir bottle can enter the dispensing bottle by gravity flow. The slide valve must be closed in order to rotate the reservoir bottle away from the dispensing bottle. Likewise, the reservoir bottle must be locked in a vertical position with the reservoir bottle over the dispensing bottle in order to open the slide valve.

Abstract: A fraction collector where fractions of liquid are sequentially dispensed from a dispensing means into a plurality of receptacles arranged in a cassette in the fraction collector, by displacing the dispensing means relative to the receptacles, the receptacles being arranged at predefined positions with respect to the cassette and the cassette being arranged at a predetermined position with respect to the fraction collector, wherein the cassette is retained at the predefined position with respect to the fraction collector by a magnetic arrangement.

Abstract: An improved fueling system is disclosed. Each vehicle is equipped with its own operation means to control the distribution from a fuel pump to the vehicle. This will prevent people from having to touch the same fuel pumps. Each vehicle will have a memory device that will store information such as the type of fuel last used to fill the fuel tank of the vehicle, financial information of the vehicle's owner, and the minimum standard of fuel required by the vehicle. Once the fuel pump receives this data from the vehicle's memory device, then user may then initiate fuel transfer. This system may also prevent a car from refueling the stolen car if the fuel pump recognizes the vehicle's data (e.g. VIN number) as having been reported stolen.

Abstract: A robot is described for automatically performing microfluidic experiments that are often complex and repetitive. The robot includes a system for initiating the communication of off-chip fluids, such as fluorocarbons, and off-chip materials, such as proteins. The communication of off-chip fluids and off-chip materials is further guided to a microfluidics device vis-à-vis a Z-head robot, an XY plane robot, and an interface assembly that creates a fluid-tight joint for communicating the off-chip fluids and off-chip materials into the microfluidics device for conduction of microfluidics experiments.

Abstract: In a plant for producing thin articles in the form of a slab, manufactured with a mix (M) based on agglomerate stone or ceramic material, the mix is distributed in a thin layer on a support (90) using a distributor (100) comprising a hopper (120) and an underlying extractor belt (150). Means (132, 151) are provided for preventing interruption of the article production cycle, required to eliminate the incrustations resulting from contact of at least part of the hopper (120) and/or the extractor belt (150) with the mix.

Abstract: A concentrate dispensing system for dispensing a fluid for dilution, comprises a bracket (1) and a bottle (2). The bracket (1) is arranged to releasably hold the bottle (2). The bottle (2) is arranged to dispense a predetermined quantity of the fluid to a first receptacle type, which is freestanding, when the bottle (2) is in a freehand mode and is not held in the bracket (1). The bottle (2) is arranged to dispense a predetermined quantity of the fluid to a second receptacle type (3), which is received and guided by the bracket (1), when the bottle (2) is in a bracket mode and is held in the bracket (1).

Abstract: Methods and apparatus are disclosed for filling solid particles into a vertical tube by conveying the particles downwardly into the tube along a loading tool that softens the fall of the particles and provides even filling of the tube. The loading tool includes a center member and a plurality of damper members that can be adapted in particular cases to the actual type of particles and the tube diameter. The damper members can be stiff or flexible since they do not occupy a substantial portion of the cross section of the tube at any particular axial location. In operation, the center member can be jerked during the filling operation while simultaneously being lifted up gradually as the tube fills or it can be sequentially lifted. The damper members reduce the falling velocity of the particles and divert the particles from falling in straight downward paths. This avoids bridge formation and breakage of the particles during filling.

Abstract: A concrete delivery system includes a hopper having an open top and a discharge opening therein. A belt is trained around the front roller and the rear roller and the discharge opening is provided at the lower end of the hopper. A first positive displacement pump is connected to the liquid container and is driven by a rotatable shaft attached to one of the front or rear rollers for delivering the liquid from the liquid container to the mixer. A mixer is provided for mixing the material with the liquid and concrete mixture. The device includes a minimum of adjustment controls. An add mix fluid attachment may also be included in the addition to the liquid dispenser and this is controlled by the same shaft as the liquid dispenser is controlled.