Abstract: A rotary tumbler metal reclaimer includes an inner cylinder and a concentric outer cylinder that rotate simultaneously. The inner cylinder includes a first compartment that intakes material for breaking by teeth, a second compartment that receives broken material from the first compartment and crushes the material into smaller particles, and a third compartment wherein particulate material enters the space between the inner cylinder and the outer cylinder by attrition through perforated screens. The second compartment includes a crusher having various features for crushing lump material as it rotates. The third compartment provides further breakage and conveyance of particulate material. Particulate material then returns proximate the intake for screening into fine and coarse sizes and then collecting for reuse. Metallics and metallic oxides exit the tumbler through apertures in the rear of the third compartment for collection.

Abstract: A screen and grinder assembly including a frame, a grinder unit removably coupled to the frame, and a screen unit coupled to the frame. The screen unit is configured to divert solids suspended in a liquid stream to the grinder unit for grinding thereby.

Abstract: A hogger and reducing apparatus and considers issues associated with fibrous other materials clogging screening apertures A paddle arrangement having an open framework rotates relative to the screening apertures provided on a drum. Either or both the paddle arrangement and drum may rotate, the resultant action increasing agitation of raw material (being reduced in size by a reducing means) in the vicinity of the screening apertures and also providing a wiping type effect to help clear material from within the apertures.

Abstract: [Problem] To provide a classification device in which product fine powder little in mixture ratio of coarse particles can be obtained. [Means] for Resolution A classification device characterized in that a setting pitch P between stationary fins 13 and a width L of each stationary fin 13 are combined so that a value of P/L is in a range between 0.042×(??50)+0.64 and 0.019×(??50)+0.22 in 50°???70° when ? is an inclination angle of each stationary fin 13, P is the setting pitch, and L is the width in a direction of circulation of particles.

Abstract: The invention relates to a method and device for separating a mixture made of particles of a first particle type and a second particle type, especially aleurone particles and shell particles made of comminuted bran, said particles being scarcely distinguishable in terms of size and density, into various types of particles. Separation occurs according to particle-type specific triboelectric charging of said particles in a first active area and subsequent separation of the differently charged moving particles in an electric field.

Abstract: A crushing machine including a crushing means, a feed conveyor for feeding material to the crushing means, a detector for detecting metal in the material on the feed conveyor, and a bypass chute for the crushing means, the feed conveyor being movable between a normal operating position in which the material is fed to the crushing means and a bypass position in which the material is fed to the bypass chute, the arrangement being such that on detection of metal in the material, the feed conveyor is stopped and moved from the normal operating position to the bypass position so that the material with the metal is discharged into the bypass chute.

Abstract: A file shredder has an integrated unit for automatic feed of sheets of paper or similar materials. An upper device part contains a cutting mechanism, at least one drive, and a control device. A feed shaft leads from the top of the upper device part, and a secondary channel leads from a chamber-like intake opening disposed on the side, to the cutting mechanism. A hinged lid pivotable about an axis is assigned to the chamber-like intake opening, and the upper device part sits on a lower device part. A barrier is disposed near the front, lower edge of the face surface of the hinged lid, and along this edge. The barrier rests on the top sheet of the stack of sheets laid into the chamber-like intake opening, and removes any objects still adhering to this sheet, particularly staples, when the sheet is drawn in toward the cutting mechanism.

Abstract: The invention provides a device for destroying sheet material, comprising shredding means (2) for shredding the sheet material and a feed conveyor system (3) for feeding sheet material to be destroyed to the shredding means from a feed location, wherein the feed conveyor system is arranged for feeding sheet material to be destroyed to the shredding means from a number of different feed locations (4). The invention further provides a system for sorting and destroying sheet material.

Abstract: Disclosed is a method of cooling hot material having different particle sizes that has been heat treated in a kiln. The material is first passed through a cooling apparatus, after which it is delivered to a screening apparatus for screening out smaller material below a pre-determined fineness and transporting larger material above such pre-determined fineness to a crushing apparatus. The larger material is crushed and is delivering back to the cooling apparatus for further cooling. It is a feature of the invention that the cooling apparatus, screening apparatus and crushing apparatus have a common environment, that is, they are all enclosed within the same housing.

Abstract: Disclosed is an auto-feed built-in a paper shredder, including a pair of bisecting lids that are each provided at an inside thereof with a paper press, a paper receiving compartment, an auto-feed, and a paper shredding device located exactly below the auto-feed, wherein the auto-feed includes a paper tray, a paper inlet and two roller assemblies; the paper inlet and the paper shredding device located therebelow are aligned along an identical central axis; the two roller assemblies are provided at opposing sides of the paper inlet in parallel and project into the paper tray, whereby after placing a pile of paper into the paper receiving compartment to be supported by the paper tray, and closing the bisecting lids, the paper presses provided at the insides of the lids would apply a force against the pile of paper, such that a bottommost paper of the pile of paper would be folded in half by the two rollers rotating towards each other and then fed into the paper inlet to be subsequently shredded by the paper shre

Abstract: The invention relates to a method and device for separating a mixture made of particles of a first particle type and a second particle type, especially aleurone particles and shell particles made of comminuted bran, said particles being scarcely distinguishable in terms of size and density, into various types of particles. Separation occurs according to particle-type specific triboelectric charging of said particles in a first active area and subsequent separation of the differently charged moving particles in an electric field.

Abstract: A device reuses several plastic materials and paper fibers rejected in previous recycling performed by paper industries, by compacting the fragments of the plastic materials inside of a conventional container.

Abstract: A grinding circuit includes ore and fluid feed lines, a grinding mill connected to the feed lines, a grinding chamber to produce a crushed resultant fluid having ground fines and large particulate therein, a cyclone for receiving crushed resultant fluid having ground fines and large particulate and for expelling at least part of the fluid and the ground fines and dispelling a remainder of the fluid, large particulate and another part of fine grounds gravity flow, a pump to cause the first crushed resultant to flow into the cyclone, a second fluid feed line. A density separator receives the remainder and additional fluid to cause upflow current therethrough such that a part of mixed fluids and the large particulate gravity flow to the grinding mill and at least part of the mixed fluids and another part of the ground fines are circulated back to the cyclone.

Abstract: Crushed rock is produced by passing rocks through an early stage rock crusher. Crushed rocks that exit the early stage rock crusher are passed across a sizing device. Rocks failing to pass completely through the sizing device are recrushed in a later-stage rock crusher and then passed downwardly through a high-volume air stream which flows within the crusher transversely through the downwardly traveling crushed rocks and extracts fines therefrom prior to exiting of the crushed rocks from the crusher. The fines extracted by the air stream are at least 50% minus 50-mesh.

Abstract: A process and apparatus for manufacturing crumb and powder rubber. The process and apparatus include a cooling step, effectuated by cooling means, wherein the temperature of cryogenically cooled preprocessed rubber particles is controlled. The process and apparatus also include a grinding step, effectuated by grinding means, in which the degree of grinding, and thus the product particle size range, is controlled.

Abstract: A transportable system for separating materials in a waste stream. An arrangement of separation and grinding devices is mounted on a transportable platform. The devices are configured and arranged to produce three or more product streams from a plastic-rich feed mixture. One of the product streams is a coarse heavy stream, one stream is a ground plastic-rich product stream, and one stream is a ground light material stream. The system can be transported to a waste-goods location, operated to separate waste-goods, and relocated a new location.

Abstract: A pressure differential material transport system to transfer materials with an airflow to a sewer system. Embodiments of the pressure differential material transport system may be used for residential or industrial applications to dispose of materials to the sewer or to a comminutor to reduce the size of materials prior to disposal.

Abstract: A transport locking arrangement is disclosed for a vibrating feeder of a mobile crushing unit, the transport locking arrangement utilizing the downward rotatable sidewalls of the feeder hopper of the vibrating feeder that are hingedly mounted on the framework of said crushing unit, whereby the sidewalls in their lower position are adapted to lock the vibrating feeder substantially rigidly to the framework of the crushing unit. The invention offers a rapid and easy technique of transport locking for a vibrating feeder.

Abstract: A method and system of harvesting crops involves cutting and threshing the crop, separating graff (a mixture of grain kernels, chaff, weed seeds, and other organic matter) from straw (plant stalks), and returning the straw to the field. This is preferably carried out in a harvesting unit of the pull type having a graff storage tank. The collected graff is moved to a stationary cleaning mill in a different location by means of a suitable vehicle such as a truck. Storage of the graff prior to cleaning is avoided and the cleaning mill, and preferably the harvesting unit and vehicle, are designed to make this possible. This avoids difficulties caused by the poor material flow of graff. Various details of the equipment are also novel.

Abstract: A method and apparatus for separating the organic membrane portion of waste egg shells from the hard inorganic mineral portion thereof, so that each can be used or further processed as desired, thereby addressing the environmental and economic issues associated with disposing of waste egg shells. The membrane and shell are separated by first processing waste eggshells so as to yield small waste eggshell particles. During this processing, the waste eggshell particles are at least slightly abraded, whereby the linking structure between the membrane and shell is at least partially disrupted. Thereafter, the waste eggshell particles are conveyed to a device, which isolates the two components based on their size and weight differences. The methods listed above can provide products from the eggshell waste including precipitated calcium carbonate, membrane, protein, amino acids, collagen and other important components.

Abstract: A return device for containers, such as bottles, cups, cans, or the like, comprises an insertion opening for receiving the container and at least one distributing means for transporting the container from the insertion opening to a selectable processing means of the return device. For a faster and easier sorting of the containers in a compact way, the distributing means comprises at least one intermediate bottom and a receiving means which is movable relative to the bottom, transports the container away from the insertion opening and is provided with a bottom opening, the intermediate bottom being movably supported in the return device and comprising at least one sorting opening which can be positioned below the bottom opening for passing the container therethrough to the selected processing means.

Abstract: A method and apparatus for separating adhered paper from paper-covered gypsum board, involving passing the gypsum board past a magnet to automatically remove ferrous materials from the gypsum board without stopping the process/apparatus, pulverizing that gypsum board into a screenable mixture of pieces of paper and smaller separated gypsum board particles, and then screening that mixture and segregating the pieces of paper from the gypsum board particles. This method and apparatus may optionally also include an area for manually pre-sorting and removing non-gypsum materials from the gypsum board prior to pulverization, may optionally also include additional screening steps, and may optionally also include passing the screened and segregated gypsum board particles past a second magnet. The magnets may have self-cleaning belts.

Abstract: Equipment for the recycling of polyolefinic plastic sheeting material that comprises: breakers (6) for plastic material; separating devices (10) for separating material of higher density; crusher mills (26); and water separating tanks (62, 68), with a lower outlet and with a feeder that carries the material to the bottom (72) of the tank (62, 68); the equipment also comprises a pump (78) connected to the outlet (74) and equipped with an outlet (80); several movable devices (82) suitable for promoting suction flow of this water and materials through the inlet (76) and a propulsion flow through the outlet (80); and a motor (84) of variable speed suitable for driving the movable devices (82), such that a variation in the speed causes a variation in the flow rate of the flows.

Abstract: Methods of controlling the bulk density, permeability, moisture retention and thermal properties of bulk materials are provided by selectively sizing the bulk material. Preferably, the bulk material is sized into a bi-modal size distribution to control these properties. Methods of decreasing the density of bulk materials are also provided.

Abstract: A food disposal system for installation on a drain of a commercial kitchen sink enables segregation of oil/grease from effluent flows from the drain. A housing collects effluent flows containing water, oil/grease, and solids from the drain, and a macerating pump has an inlet connected to an opening of the housing and an outlet connected to a sanitary drain. A greasy water outlet extends to an oil/grease separator from an outlet on the housing above the macerating pump inlet, and a hot water backflush source enables hot water to flow into the housing.

Abstract: A wet material treatment apparatus includes an inlet hopper for introducing the wet material into the apparatus. The hopper feeds the wet material into an injector auger that physically directs the wet material into a high velocity air stream produced by a blower thereby directing the flow of the wet material through the apparatus. The wet material moves from the injector auger into a cyclone that separates the wet material through specific gravity and desiccation into a substantially liquid and a substantially solid portion. The substantially liquid portion is discharged through a first outlet in the cyclone to a wet scrubber, while the substantially solid portion of the wet material is discharged through a second outlet. The apparatus can be mounted to a trailer for mobile transportation, and can include two cyclones operating in series.

Abstract: A process for the grain size reduction of a raw material in piece form, wherein: all or part of the material in piece form is subjected to a grinding operation, capable of enabling to be obtained at its output a material in grain form having a requisite grain size distribution, starting out from any given grain size of the material in piece form; downstream, the material in grain form obtained is directed exclusively towards a common container, whatever the size of the grains, so as to obtain, in a single run, in the said container, a mixture of material in grain form having the grain size distribution, for use as such.

Abstract: Methods of controlling the bulk density, permeability, moisture retention and thermal properties of bulk materials are provided by selectively sizing the bulk material. Preferably, the bulk material is sized into a bi-modal size distribution to control these properties. Methods of decreasing the density of bulk materials are also provided. In one embodiment the bulk material is separated into a first fraction and a second fraction, the second fraction being smaller than the first. Subsequently, the second fraction is separated into a third fraction and a fourth fraction, the fourth fraction being smaller than the third. The third fraction is then comminuted to be the same size as the fourth fraction, at which point the first, third, and fourth fractions are finally mixed to produce a densified bulk material.

Abstract: A device inside a grinder to peel the inner embryo membrane of coffee beans is disclosed. It has a motor with a motor shaft, a positioning cylinder located on the lateral side of a motor and having a lower exit inside a conveyor base, and a conveyor base, which is on the lateral side of the grinder and has an extruded exit end on the other side of the grinder. The motor shaft connects to an eccentric synchronic rotation grinding bar. During rotation, the grinding surface completely hits the inner ring rim of the positioning cylinder and coffee beans are ground into particles. When the particles fall, due to low specific weight, the embryo membrane is drawn by a fan located on the lateral wall of a grinder and is collected in a dust collection bag.

Abstract: A table separator is provided, wherein the table separator comprises a plurality of solid-bottomed trays and a plurality of dimples for facilitating separation of degerminated corn into endosperm and germ fraction, the dimples being aligned in linear juxtaposition on the surface of the trays and having a center portion raised with respect to the perimeter of the dimples.

Abstract: A self-propelling crushing machine comprises a machine body (2) provided with a travelling body (1); a hopper (4), a feeder (5), a selective feeder (6) and a crusher (3) which mounted to the machine body; a conveyer (7) disposed below the machine body; and a controlling device for independently controlling the feeder, the selective feeder, the crusher and the conveyer, wherein the feeder conveys a material to be crushed in the hopper to the selective feeder, the selective feeder selects the material to be crushed conveyed by the feeder so as to fall down soil, shingle and the like and convey large rock to the crusher, and the conveyer discharges the selected soil, shingle and the like and material pieces crushed by the crusher.

Abstract: A separating device for coolants or lubricants, containing chips, is described. This is provided with a supply line (11), a container (10) as well as a pump (20), which is connected with the container (10). The pressure side of the pump is connected with a discharge line (28). The pump, in particular, is an unchokable pump. A device (13), for comminuting the chips supplied, is disposed in the container (10).

Abstract: A sewage cleaning and comminuting system is provided with a transverse semi-circular concave filtering screen that extends across an influent channel which intercepts all solids too large to pass therethrough. A combined screen cleaning and comminuting grinder unit is mounted in front of the screen in close relationship. It has a concave surface for reciprocating motion therebetween along the full extent of the screen, so as to clean and remove large solids intercepted by the screen surface, and to subsequently comminute such larger solids. As they are recirculated back into incoming flow of sewage, larger solids are ground into smaller solids by the grinder so that they can pass through the screen. A semi-circular screen in combination with a grinder is a preferred embodiment of the system. The system includes a single or multiple drive means whereby the comminuting grinder is actuated and provided with the reciprocating motion along the surface of the screen.

Abstract: A method and equipment manufacturing predetermined low bark content wood chips and a high bark content fuel fraction from wood chips with bark attached, includes mechanical bark removal treatment, in which the bark is removed from the chips and their size is reduced; pre-cleaning of the flow of chips with bark attached, into a flow of chips with a bark content of less than 10% and high bark content rejects, with the aid of pneumatic and mechanical sieving; final cleaning of the aforesaid wood chip flow from the pre-cleaning, with the aid of an optical separator, to create low bark content wood chips and a fraction with a higher bark content; collection of the rejects leaving the process, to create the aforementioned high bark content fuel fraction; and seiving out of the flow of wood chips, before the mechanical bark removal process, a predetermined thin fraction of the chips, which bypasses the debarking process.

Abstract: An apparatus for improving the pulping characteristics of wood chips. Several chip compressors are used to treat the wood chips in the desired manner.

Abstract: A flour milling method and a flour milling system are provided, in which a plurality of milling steps whose milling degrees are different from one another are performed sequentially from an upperstream to a downstream, each of the milling steps including a breaking step and a grading step. The steps are carried out by sorting the raw wheat grains into regular wheat grains and material other than the regular wheat grains, forwarding the sorted regular wheat grains to the uppermost-stream milling step, and forwarding the sorted material other than the regular wheat grains to at least one of downstream milling steps at a downstream of the uppermost-stream milling step. The method and the system enable the production of wheat flour of better quality with better yield than that conventionally produced.

Abstract: An integrated system for diverting and reducing the size of waste materials in an effluent stream comprising a frame having a bottom housing and a top housing and mountable in the stream. A grinder unit is mounted to the frame bottom housing and comprises a cutter assembly positioned in the stream and a drive mechanism coupled to the cutter assembly to rotate the cutter assembly. The drive mechanism may be electric or hydraulic. A diverter unit is mounted to the frame. It may be a single diverter or dual diverters. The diverter unit comprises a cylindrical drum rotating on a stub shaft. It may also be a helical coil. A drive assembly operably couples the drive mechanism to the drum shaft to rotate the cylindrical drum as the cutter assembly rotates. In operation the diverter unit is positioned side by side to the grinder unit to diverts solids in the effluent stream toward the grinder unit for size reduction. Side rails are employed for flow control around both the diverter unit and the grinder unit.

Abstract: A process and apparatus for coal gasification plant feedstock preparation. A raw feedstock slurry is fed to a hydrocyclone which separates and provides a primary carbonaceous-rich overflow. The primary overflow is further separated by a dewatering screen into a secondary carbonaceous-rich overflow and a media bleed slurry. The secondary overflow is crushed by a crusher and a portion of the media bleed slurry is added to the crushed secondary overflow for subsequent milling and conditioning.

Abstract: A mobile pumping station includes a mobile base frame designed to be moved across the ground and a slurry vessel mounted on the mobile base frame and connected to a liquid supply. A primary feed hopper also mounted on the mobile base frame receives a mineral and transfers the mineral to the slurry vessel. The primary feed hopper can be adjusted to achieve a predetermined flow of the mineral to the slurry vessel so that the ratio of the mineral to the liquid can be controlled. The mobile pumping station can be moved into a position adjacent a mineral deposit such that a portion of the mineral deposit can be loaded into the slurry vessel. The mineral is formed into a flowable slurry by combining liquid from the liquid supply with the mineral, and thereafter the flowable slurry is discharged from the vessel via a slurry pump.

Abstract: A pumping station for pumping a cooling and lubricating fluid containing particulate matter such as machining chips has a compact structure with a relatively low total structural height, while still assuring that the chips are conveyed with the fluid to the pump suction inlet, without settling-out or accumulating in the apparatus. The pumping station (1) includes a collecting container (5) with at least one pump (6) arranged therein, a chip breaker (7) and a supply conduit arrangement. The supply conduit arrangement includes a supply line (2) through which the cooling and lubricating fluid containing the machining chips is received from a machining tool or transfer station. Furthermore, two branch lines (3) and (4) are interposed and connected between the supply line (2) and the collecting container (5). A first branch line (3) conveys the fluid, from which the chips have been removed, with a slight downward slope toward the collecting container (5).

Abstract: A system for processing plant material is provided which separates plant fibers from the woody portions of the material to produce a commercially desirable length of fiber and to grind the shorter woody portions that have been separated from the longer fibers to a desirable size which has found use in certain commercial applications. The current system is well suited to process the tough fibers of the North American strain of flax straw, and will also find utility in processing other bast fibers, such as jute, hemp, ramie, and kenaf.

Abstract: A large, mechanically agitated pump box is used between a mixer, for mixing oil sand and water to produce a slurry, and a pipeline for conveying the slurry to a processing facility. Prior to the aqueous slurry being discharged into the pump box from the mixer, it is screened to reject large solids. The oversize is directed to an impactor where it is comminuted and the comminuted product is screened again prior to being discharged into the pump box. The pump box is designed to increase the residence time of the slurry in the pump box and to separate the slurry into two phases, the suspended slurry and the larger lumps that cannot be suspended. The larger lumps that settle in the pump box are recycled to the impactor for comminution.

Abstract: A series of solids size reduction systems utilizing variable displacement rotary dispersion and in-line grinder apparatus. The systems include in-feed, and receiving and mixing systems for blending solids with a carrier fluid. The systems include force feeding of the solids and carrier fluids to the grinding apparatus as well as separation and recover of the carrier fluids for recycling. The systems further include pre-shredding and metal removal apparatus. Systems are also disclosed which provide for recovery of ferrous and nonferrous metals, separation of hi/low density solids and further provides for the palletizing of separation solids. Systems and processes are disclosed for the reduction of whole tires or strips and chips to granulated rubber, the portable processing of raw sugar cane, and the processing of drill cuttings for injecting into a well head.

Abstract: A mixer circuit, in the form of a vertically oriented stack of components, functions to slurry oil sand with water in preparation for pumping through a pipeline. The oil sand is initially dropped from the end of a conveyor. It is contacted in mid-air with a stream of water to distribute the water through the oil sand and to wet the latter. The mixture drops into a downwardly slanted trough. The water and oil sand mix as they move turbulently through the open-ended trough. The slurry is deflected as it leaves the trough and is spread in the form of a thin sheet on an apron. It is then fed over screens to reject oversize lumps. The screened slurry drops into a pump box. The rejected lumps are comminuted in an impactor positioned at the end of the screens. The comminuted oil sand is screened to remove remaining oversize lumps and the screened comminuted oil sands are delivered into the pump box. The structure is compact and the oversize reject loss is relatively low.

Abstract: A guarding device to guard a household garbage grinder from inadvertent introduction of metal material into said grinder. The guard comprises a magnet around the entrance to the grinder to form a magnetic field across the entrance so that ferrous metals will be attracted to the magnet.

Abstract: A system and method for recycling a waste glass cullet includes a first screening station for separating large glass shards of approximately one inch in diameter from smaller glass shards in the cullet, a crusher to reduce the large glass shards to smaller glass shards smaller than approximately one inch in diameter, a second screening station to separate remaining large contaminants having a diameter of approximately one inch or greater from the cullet, a series of vacuum inlets disposed along a conveyor to remove light contaminants, a presoaking apparatus comprising a holding tank partly filled with a presoaking solution, a rotary washing apparatus comprising a drum with vanes disposed along an inner wall of the drum to toss the cullet in the washing solution, the vanes being oriented so that the cullet is tossed progressively forwardly toward a discharge outlet of the drum, to remove buoyant contaminants from the cullet, a dewatering apparatus to remove excess water from the cullet, and a dryer for reducin

Abstract: A novel method for processing plastic waste and polyresin, particularly polyethylene, into usable plastic products is described. Plastic waste such as wire fluff generated as a by-product from wire-chopping operations can be used in the process. Also described are products obtained by the process.

Abstract: An apparatus and system for processing the elastomeric component of a gum base or chewing gum product. Bulk blocks or slabs of elastomeric materials are conveyed to a housing with a rotary cutting mechanism. A feeding and metering mechanism controls the introduction of the blocks or slabs to the cutting mechanism. A lubricant feeding mechanism controls the introduction of lubricant to the housing for coating and lubricating the elastomeric materials. A cooling mechanism maintains the temperature of the housing and materials within a prespecified range. A screen or filtering mechanism controls the size of the ground-up pieces of material which are removed from the housing. Vacuum-conveyer systems convey the ground-up pieces of material to a storage hopper where excess lubricant is removed and then to a metering mechanism for selective introduction of the pieces of material to an extruder mechanism and/or gum or gum base manufacturing process.

Abstract: A grinder for grinding materials to produce a ground substance. The grinder includes a cabinet, a grinder motor retained in the cabinet, and a grinder mechanism coupled to the motor to grind the materials. A hopper is positioned in communication with the grinder mechanism to deliver materials for grinding. The container retainer is attached to the grinder for retaining a container in close proximity for capturing ground material dispensed thereby. An activation switch assembly is included with the grinder to selectively control the grinder and activate the grinder when a container is placed in a desired location. A substance settling assembly is included with the grinder for removing a container retained by the grinder to settle the substance as it is dispensed from the grinder to the container. A chaff retainer is provided for maintaining chaff included with the ground substance in mixture with the ground substance.

Abstract: A coffee mill providing for mixing of coffee beans in different ratios includes a bin partitioned in the middle to form two chambers holding two different types of coffee beans. An outlet in the bottom center of the bin leads to a coffee grinder. This central outlet is surrounded by a base cylinder having a side opening leading to each chamber of the bin. The cylinder is covered by a cylindrical closure cap, also partially open on the side. The cap can block both chambers of the bin, one chamber, or provide partial blocking to one side and none to the other, thus allowing the user to adjust the ratio of different coffee beans by rotating the cap. The bin interlocks with the housing of the grinder, but can be disengaged for removal. The cylindrical closure cap is positioned to block the outlet from both section of the bin when the bin is to be removed.