Abstract: The invention relates to a process for grinding plastics in bead mills, which comprises carrying out the grinding in a centrifugal-agitator bead mill, in which the grinding beads and the plastics are exposed to a centrifugal force field in a rotating drum.

Abstract: A process for separating particles of a cohesive form of a polydisperse compound or composition comprising nevirapine, nevirapine hemihydrate, mexiletine or mexiletine hydrochloride according to size is disclosed which comprises milling and sizing the particles in an apparatus which includes individual and/or nested sieves each of which may also include a quantity of beads, disks and/or other geometric or non-geometric shapes. The sieves can be rotated, vibrated or agitated in any and all combinations by various methods to achieve independently horizontal rotation and vertical reciprocation (similar to a merry-go-round) to efficiently segregate, size or mill cohesive and polydisperse powder particles to specific size ranges. The invention also contemplates a method for using the apparatus in the sizing and quantification of aggregated particles of cohesive disperse powders.

Abstract: The specification describes a method and associated apparatus for pulverising materials, wherein the pulverising apparatus includes a receptacle, two or more pulverising weights and a driving mechanism linked to the receptacle wherein the pulverising weights are disposed substantially horizontally with respect to the receptacle. The method of operating the apparatus includes the steps of: a) placing the pulverising weights in the receptacle, wherein the pulverising weights are disposed substantially horizontally with respect to the receptacle, and b) activating the driving mechanism, causing material(s) retained in the receptacle to be ground by the pulverising weights.

Abstract: In accordance with a preferred embodiment, a rolling-type planetary ball mill apparatus for producing nanometer-scaled powders is disclosed, the apparatus comprising (a) a main rotary wheel comprising supporting members, (b) a plurality of mill pots which are revolvable by receiving a rotational force from the main rotary wheel through their corresponding supporting members, and are disposed around the main rotary wheel with substantially equal distance between one mill pot and another, each mill pot comprising a tiltable pivotal shaft having rotary coupling means so that the pot can also rotate about its own axis, each pivotal shaft having one end being supportably connected to its corresponding supporting member of the main rotary wheel; (c) motor means in drive relation to the main rotary wheel for providing rotational forces thereto; and (d) a non-revolvable counter-acting supporting ring disposed coaxially with the main rotary wheel and in the close, working vicinity of the mill pots; each tiltable pivot

Abstract: The present invention provides a vibratory mill for grinding dental filler having a grinding chamber, preferably coated with an abrasion resistant polymer, the grinding chamber being charged with glass beads having a diameter in the range of about 0.1 mm to about 10.00 mm, and a refractive index substantially matching that of the dental filler to be ground. There is further provided a method of using this mill and media to provide substantially pure ground particles having an average particle size less than the average wavelength of visible light that, when incorporated into a dental restorative composite, impart good optical properties to the cured material.

Abstract: A mill for grinding and/or mixing a material. In one presently preferred embodiment of the present invention, the mill includes a first container rotatably mounted at a first end of a gyration arm. The container rotates about a first axis, and the gyration arm rotates about a second axis. The mill may further include a second container mounted at a second end of the gyration arm. The second container is rotatable about a third axis. As the gyration arm rotates about the second axis, the containers move with the gyration arm. In addition, the containers themselves rotate about their own respective axes thereby greatly enhancing the forces within the containers effecting the grinding and/or mixing. A first motor may be used to rotate the gyration arm, and a second motor may be used to rotate the containers about their respective axes. The mill may be operated in a continuous mode or in a batch mode.

Abstract: Milling/sizing apparatus which includes individual and/or nested sieves each of which may also include a quantity of beads, disks and/or other geometric or non-geometric shapes. The sieves can be rotated, vibrated or agitated in any and all combinations by various methods to achieve independently horizontal rotation and vertical reciprocation (similar to a merry-go-round) to efficiently segregate, size or mill cohesive and polydisperse powder particles to specific size ranges. The invention also contemplates a method for using the apparatus in the sizing and quantification of aggregated particles of cohesive disperse powders.

Abstract: A method and apparatus for producing a hydrogen adsorption alloy, the apparatus comprising a high speed ball mill in the form of a planetary ball mill mounted to a rotatable main shaft, wherein the planetary ball mill includes a plurality of mill pots each mounted for rotation on its own axis, a planetary gear disposed on the periphery of each mill pot, a fixed sun gear meshing with the planetary gears, and an atmosphere adjusting device connected to each mill pot. A drive rotates the main shaft causing each mill pot to revolve around the main shaft which results in the planetary gears traveling around the sun gear to rotate each mill pot on its own axis, the rotation of each mill pot being in the same direction as the rotation of the main shaft.

Abstract: The present invention provides a vibratory mill having a grinding chamber, preferably coated with an abrasion resistant polymer, the grinding chamber being charged with glass beads having a diameter in the range of about 0.1 mm to about 10.00 mm. There is further provided a method of using this mill to provide substantially pure ground dental filler particles having an average particle size less than the average wavelength of visible light.

Abstract: A vibratory finishing machine includes a base having an upper face, coil springs mounted on the upper face of the base, a vibrator having an outer peripheral face and mounted on the base via the coil springs for vibration, a vibrating motor mounted on the vibrator, and a helical tubular container into which an admixture of workpieces to be finished and finishing media are loaded. The container has upper and lower flat superposed faces extending lengthwise and is helically wound on the outer peripheral face of the vibrator at a plurality of turns so that the upper and/or lower superposed faces of each turn of the container are superposed on the lower and/or upper superposed faces of the adjacent turn or turns respectively.

Abstract: A conical gyratory mill for regrinding, milling or fine pulverization of materials, having a milling media, such as milling balls, located in the milling space between a milling bowl and a milling head. The material to be milled is introduced into the top of the milling space and is milled as it descends through the milling space by interaction with the milling balls, milling bowl and head. A fluid is introduced at the bottom of the milling space and is discharged at the top of the milling space, carrying with it material which has been milled to the desired degree of fineness.

Abstract: The present invention concerns a high energy oscillating ball mill, useful in the preparation of nanophase materials having crystallite sizes of the order of 5 to 20 nm, with high production capacity and consisting of a grinding jar (containing, in the working conditions, the grinding balls and the materials charge to be processed) driven in an alternate regime of motion. Such a grinding jar is elastically constrained in such a way that the inertial forces originated during the oscillations are compensated.

Abstract: A vibratory apparatus is provided and comprises a generally horizontally arranged container having a material supporting surface with means for resiliently mounting the container relative to a support surface. A bracket is resiliently mounted relative to the support surface and is resiliently mounted to the container. A vibration generator means is mounted on the bracket at a location offset on one side of the container. The vibration generator means generating a vibratory force along a linear path offset from the container. Part of the resilient mounting of the container on the support surface and the resilient mounting of the bracket on the support surface and the resilient mounting of the bracket to the container are all variable rate resilient means which can be adjusted to meet certain desired parameters in operating the apparatus. The resilient mounting of the container to the support surface and the resilient mounting of the bracket and vibration generator to the support surface are 180.degree.

Abstract: An eccentric vibrating mill with at least one grinding container, to which is solidly attached the exciter unit as vibrating drive, and in which for the purposes of improving the grinding properties of conventional vibrating mills according to the present invention there is provision for the grinding container to be excited eccentrically on one side, that is, outside the gravity axis and the mass center of the grinding container, whereby a balancing mass is provided for balancing the eccentric mass and the drive side spring axis lies between the gravity axes of the grinding container and the exciter unit and the exciter unit is operated such that uneven vibrations such as circular, elliptical and linear vibrations are produced.

Abstract: A pulverizing disc 10 is disclosed which comprises a main body 11 of a generally cylindrical shape with a circumferential wall 12, lower surface 13 and upper surface 14. The main body 11 is integrally formed with a second body 14 which is also of generally cylindrical shape and which is mounted centrically upon the upper surface 14. The second body 15 extends from one side of the main body 11 to a position beyond a central axis 16 of the main body 11. An aperture 17 is formed through the disc 10 along the central axis 16. An upper surface 19 of the second body 15 is bevelled downwardly in the radial direction from axis 16 to form a central high region 18 around the perimeter aperture 17. The bottom surface of the first body 11 can be formed with a flute 23 which extends radially from aperture 17 to circumferential wall 12 of the first body 11.

Abstract: This present invention intends to provide a continuous type vertical planetary ball mill performing with high efficiency. In this ball mill, a mill pot is provided with an entrance and an exit which are vertically open. The entrance communicates with a charging port of a charging case which rotates together with a revolving rotary body, and the exit communicates with a discharging case fixed to a bed so as to allow only fine particles to pass through. Compressed air is supplied to bearings interposed between an airtight chamber and a fixed shaft, between the airtight chamber and a rotary shaft, and between the airtight chamber and a mill casing. As a result, this continuous type vertical planetary ball mill is stable in construction as compared with the conventional vertical type of ball mill and enables a high speed operation. Crushing performance and material quality reforming performance are improved.

Abstract: A cryogenic vibratory mill designed to receive cooling fluid such as liquid nitrogen within a grinding chamber for grinding of feed material such as crumb rubber from vehicle tires for cryogenic comminution within a grinding chamber. Cooling within the grinding chamber is achieved by passing cooling fluid such as liquid nitrogen therethrough wherein most of the cooling fluid passes through longitudinal channels formed longitudinally in the cylindrically shaped grinding rods. The operating temperature is normally less than -120 degrees Fahrenheit. A vibrating drive is operative to vibrate the housing and the grinding rods therein to achieve comminution of the feed stock rubber passing therethrough. With this design most of the cooling is achieved by passing of the cooling fluid through the channels defined in the grinding rods with only a minimum amount of cooling achieved by cooling fluid passing through the grinding chamber between the rods.

Abstract: In a process for dispersing, blending or homogenizing of solid/liquid and/or liquid/liquid mixtures, the dispersion or emulsion to be homogenized is introduced into a rotating grinding chamber (5) which is at least partially filled with grinding bodies and is bounded by at least two rotatable wall elements (2, 4), wherein the dispersion or emulsion to be homogenized is guided through the grinding chamber (5) in a direction crosswise to the axis of rotation (3) of the wall elements (2, 4). In a device for executing the process having a grinding chamber (5) in which grinding bodies (19) are disposed, the grinding chamber (5) is bounded by at least two wall elements (2, 4) which are rotatably driveable, and the grinding chamber (5) has at least one feed and/or draw-off opening (15, 16,) on its sides facing towards and facing away from the axis of rotation (3).

Abstract: An improved apparatus for effectively disrupting biological samples contained in cuvettes to which beads have been added. In the apparatus, a special arm/bearing subassembly is driven and oscillated by a motor in a manner to attain cellular disruption of the biological samples without degradation of their cellular components. In the preferred form, the special arm/bearing subassembly has a cam, bearings, and a bearing sleeve which cooperate with a motor drive shaft to rotate a yoke with two arms holding four cuvettes. For increased safety and environmental protection, special sample retainers can be provided to better secure the cuvettes and the arm/bearing subassembly is enclosed in a sample chamber which provides a secondary containment compartment that contain any spillage.

Abstract: An improved planetary grinding apparatus is described that comprises a grinding tube holder that carries removable grinding tubes. The grinding tube holder undergoes planetary rotation and simultaneously contra-rotates at the same rate about its own axis so as to have no net rotation with respect to the base of the machine. The grinding tube holder is rigid and has no supporting or other structures around it in the space between its ends. As a result of this feature, and because of the lack of rotation of the grinding tube holder, each grinding tube may be interconnected with fixed external connectors without the use of rotating seals.

Abstract: A grinding method is provided which is capable of uniformly and precisely grinding objects for a short time, softening shocks produced when the rotation of a grinding barrel is changed between the forward direction and the backward direction to thereby eliminate bruises on the surface of grounded objects, coping with grinding for a large number of objects to be ground in a small quantity or a heavy-weight or a large-size object to be ground, and preventing contacts and collisions between objects to be ground. The grinding method comprises the steps of rotatably mounting not less than one grinding barrels at locations away from the central axis of a rotary drum, enclosing a grinding material and objects to be ground in the grinding barrels, rotating the grinding barrels in the directions identical to and opposite to the direction in which the rotary drum is rotated, and grinding the objects to be ground. An grinding apparatus for implementing the above-mentioned method is also provided.

Abstract: A planetary ball mill in which a plurality of mill pots revolve by receiving a rotational force from a main shaft, while rotating on their own axes. A feed is continuously supplied to the mill pots so that ground particles are discharged out of the mill pots utilizing air flow. A partition for dividing a grinding chamber from a discharge pipe is disposed on the discharge side of the chamber of each mill pot so as to permit only the feed already ground to pass through. The feed having passed through the partition is collected by way of a discharge chute not rotating but surrounding a discharge pipe which rotates relative to the discharge chute to generate a negative pressure which assists the discharge of ground feed from each mill pot.

Abstract: A sonic generator comprises a resonant bar, a housing and magnetic excitation units connected between the resonant bar and the housing. The magnetic excitation units are connected to the bar at highly stressed points using a mounting connection which is a sleeve having an inside diameter slightly greater than the outside diameter of the bar. A resilient elastomer such as urethane is mounted between the sleeve and the resonant member. The sonic generator may be used for grinding purposes and, in particular, may be used to grind material exceptionally fine with reduced power consumption. The bar is substantially unrestrained so as to allow substantially free vibration.

Abstract: The present invention relates to a centrifugal-force vibratory grinding machine having a container (3) which receives filling material consisting of workpieces and work bodies and the bottom (4) of which rotates relative to the container wall (5) around the axis of the container and leaves a separating gap (7) towards the container wall (5), and it proposes, in order to reduce the wear within the region of the separating gap (7), that at least one discharge element (A) is provided for the removal of particles of filling material which have penetrated into the space of the gap, which element engages into the space of the gap and rotates with the bottom (4) and/or is stationary with respect to the container wall (5).

Abstract: An intermittent epicyclic mill incorporating a housing (1) with a cover (3) contained wherein are revolvable barrels (27), having lids and carrying each a load of pebbles (64), and a carrier (18) which supports the barrels and is linked to an electric drive. A rigid mount (10) restricting the barrels (27) which are pressed thereto by load-bearing elements fitted to the carrier (18) is provided in the housing (1) in a coaxial position with the carrier (18). A revolving jib crane (9) fitted to a baseplate (2) carries a ram (7) in a coaxial position with the mill a piston rod (6) whereof is rigidly attached to the cover (3) of the housing (1). A spindle (31) carrying a lower disc (33) and an upper disc (43) is fastened to the inside of the cover (3). The lower disc (33) is installed with provision for turning with the lids of the barrels (27). The upper disc (43) is provided with spring-loaded pins (45) and is fitted with provision for axial displacement relative to the lower disc (33).

Abstract: Centrifugal treatment apparatus for mechanical treatment, e.g. grinding, polishing, cleaning and deburring of workpieces, including a workpiece receiving container, which has a mainly cylindrical casing (1) and a rotating base (2) in the form of a plate or similar, arranged coaxially thereto, whose circumferential rim abuts the cylindrical casing, the casing being removably attached to a support (3). The casing in accordance with the present invention is formed so that it can also be fixed in an inverted position with its upper rim on the support (3). In this way it is possible to use the container casing further in the inverted position after abrasion of its inner surface in the lower region, which results in the operating lifetime of the container casing being doubled or almost doubled.

Abstract: A horizontal rotating type grinding machine comprises a grinding vessel into which material to be ground is charged, a grinding medium disposed upon the inner peripheral wall surface of the grinding vessel and rotatable in the grinding vessel, and a turning motion mechanism for oscillating the grinding vessel along a horizontal circular track, whereby the material to be ground which is charged into the grinding vessel is finely ground between the inner peripheral surface of the grinding vessel and the grinding medium.

Abstract: A centrifugal grinding mill including a grinding chamber of substantially circular cross-section with respect to an axis of symmetry and constrained to have nutating motion about a relatively stationary axis, a support for supporting the grinding chamber, a feed passage in communication with the grinding chamber, a driving assembly for driving the grinding chamber about the relatively stationary axis, and a constraint assembly for determining the form of nutating motion of the axis symmetry of the grinding chamber. The nutating motion of the grinding chamber during operation of the grinding mill causes a grinding charge carried in the grinding chamber to dilate and perform a tumbling motion within the grinding chamber. Further, the grinding chamber has a surface configured to exert pressure on the grinding charge so as to limit its dilation and provide effective containment of the grinding charge.

Abstract: An orbital barrel finishing machine employs rotatable drums which are removable from the machine. A coupling member mounting a plurality of angularly spaced axially extending pins engages slots of a second coupling member to provide a rotational drive engagement for the removable drums. The drums are uncoupled from the drive engagement by axially displacing the drums. A releasable latch assembly is employed to secure the drums in the coupled drive position. The orbital barrel finishing machine is employed as a component of an integrated automatic finishing system wherein the rotatable drums may be automatically removed from the machine, unloaded, loaded and returned to the machine.

Abstract: In a process of producing mechanically alloyed composite powder, a mixture consisting of at least one metallic powder and at least one non-metallic powder or of a plurality of metallic powders is ground in a drum mill in which a large amount of energy is introduced into the material being ground. To obtain composite powders having reproducible properties for mechanical technology, the powders are ground in a centrifugal mill which has a cylindrical grinding drum, which rotates about its axis and revolves on an orbit about a stationary axis that is parallel to the axis of the drum. Said revolution is effected at an angular velocity that has a constant ratio to the angular velocity at which the drum rotates about its own axis.

Abstract: A comminuting apparatus operating on a dual mass system is designed to be compact and efficient. The apparatus comprises a frame (1, 2, 3; 31; 40) mounted on first springs (8) on a substrate (7). A processing vessel (4) is mounted on the frame and is connected thereto by second springs (6, 51). A motor (17) drives an imbalanced drive shaft (9) to cause vibration.

Abstract: A vibratory apparatus is provided with an improved structure for varying the lead angle and the amount of the vibratory force by angularly and radially positioning a movable weight relative to a fixed eccentric weight. The apparatus comprises a plate supporting the fixed eccentric weight on the shaft in one of several positions with a line through the center of gravity of the fixed weight and the axis of the shaft forming a base line. The movable weight is carried by a cylinder attached to the plate so that the longitudinal axis of the cylinder passes through the axis of the shaft at an angle to the base line. The movable weight in the cylinder is movable from a position on one side of the axis of rotation to a second position on the opposite side of the axis of rotation, the movement being linear and radially across the axis of rotation.

Abstract: An orbital barrel finishing machine employs rotatable drums which are removable from the machine. A coupling member mounting a plurality of angularly spaced axially extending pins engages slots of a second coupling member to provide a rotational drive engagement for the removable drums. The drums are uncoupled from the drive engagement by axially displacing the drums. A releasable latch assembly is employed to secure the drums in the coupled drive position. The orbital barrel finishing machine is employed as a component of an integrated automatic finishing system wherein the rotatable drums may be automatically removed from the machine, unloaded, loaded and returned to the machine.

Abstract: A pulverizing mill comprising a fixed base frame, a vibrating frame, support coil springs interconnecting the base frame and the vibrating frame for resiliently supporting the latter, aligned bearings carried in the vibrating frame and journalling respective upper and intermediate portions of a driven shaft which depends centrally through the vibrating frame, an eccentric weight carried by the shaft for providing the motive force to cause vibratory movement, a container or bowl having a replaceable wear base plate, being removably secured to the vibrating frame and containing pulverizing metal masses, and an hydraulic motor attached to the lower end of the vibrating frame and having its drive shaft coupled by flexible coupling means to the lower end of said driven shaft.

Abstract: A vibratory apparatus is disclosed for scrubbing, abrading, pulverizing, grinding, crushing, milling and/or separating granular material. The apparatus includes a two mass vibratory system with a tube, as part of the working mass, provided for the granular material and having an inlet end and an outlet end open to a stack at a location lower than the inlet end. The stack has means for creating an upward countercurrent air flow therethrough. A driving mass, including a vibration generating assembly, is provided for vibrating the driving mass and the working mass so that the granular material is agitated in the tube at large accelerations to scrub, abrade, pulverize, grind, crush or mill the granular material. When the apparatus is used as a separator or classifier, the countercurrent air flow in the stack causes minute particles to move up through the stack to separate the minute particles from the batch of granular material as the material is discharged into the stack.

Abstract: There is disclosed a system for sensing and controlling the mill load in a grinding mill. The system includes a load cell located in the region of the mill that is subjected to reaction axial thrust forces developed during mill operation. The load cell senses the thrust forces and provides output signals representative of the values of the thrust forces. The system further includes a load controller which is responsive to the output signals for determining the charge load of the mill and for providing control signals to the mill so as to control entry of materials into the mill.

Abstract: An apparatus for continuously separating castings into necessary and unnecessary portions, which castings are automatically and continuously produced by a die casting machine. The castings are separated into the necessary and unnecessary portions by vibration applied to a conveyance mechanism and to a plurality of masses while the castings are conveyed along the conveyance mechanism, which comprises a plurality of bar members.

Abstract: A method of treating material in a vessel includes the steps of vibrating the vessel to produce oscillatory displacement of the vessel wall; and transmitting such displacement to material in the vessel. The vessel may comprise a tube having a tuned cavity in which material is treated; or the vessel may contain relatively movable solid bodies to which the vibration is transmitted to grind or emulsify material flowing between the bodies; or, the vessel may contain a pumping member to which vibration is transmitted to cause material pumping displacement of that member.

Abstract: A heavy duty, large capacity, tiltable axis, tumbler-type finishing machine has a drum with an open end and a closed end. The drum is caged within and journaled by a supporting framework. A shaft journaled by a thrust bearing supports the drum in the vicinity of its closed end. A plurality of rollers arranged about the periphery of the open end support the drum in the vicinity of its open end. A shock absorbing drum rotation drive system is provided for rotating the drum relative to the framework about a rotation axis. An upstanding main frame cages and pivotally supports the drum support framework for movement about a pivot axis. A drum pivoting drive system is provided for moving the drum support framework relative to the upstanding frame about the pivot axis.

Abstract: A ball or tube mill which includes at least one grinding compartment, support means for supporting the grinding compartment, drive means for eccentrically driving the grinding compartment and a plurality of inflatable bellows supporting the support means for oscillating movement. In a preferred form of the invention, the support means is supported on four spaced inflatable bellows inclined with respect to one another such that their central axes intersect at a cone apex above the center of the mill. Means may also be provided for adjusting the pressure within each of the bellows to thereby adjust the height of the bellows individually.

Abstract: The jacket material of welding rods is removed and processed for reuse, and the rods are cleaned and processed for reuse by delivering the jacketed rods to a ball mill, grinding the jackets from the rods within the ball mill by oscillating the jacketed rods in the environment of equally long cylindrical grinding bodies while holding the rods and the grinding bodies against axial movement and in generally parallel disposition with respect to one another. The detached jacket material is conveyed continuously from the grinding chamber and further comminuted, the transport of the ground material being supported by flowing a fluid through the grinding chamber. The fluid may be a gas or a liquid and may contain a chemical reacting agent for an after treatment. The fluid may advantageously be circulated, freed from the solid material transported thereby, regenerated and/or heated. Both neutral and chemically reacting fluids may be alternately employed, depending on the particular materials involved.

Abstract: An efficient agitator system capable of high speed agitation without excessive vibration is provided by use of an inclined-axis portion on a motor drive shaft and providing a driven oscillatory member coupled thereto with high speed bearing means and arranged to be agitated but not rotated about the drive shaft axis. A highly durable plastic flexing member is provided, one end being fixed relative to the drive motor and the opposite end being attached to the driven oscillatory member to flex outward and inward as the shaft rotates while restraining the oscillatory member against rotation. Transmitted vibration is minimized by resilient mounting of the base and by providing intersection of the motor shaft axis and the inclined axis substantially centrally within the driven oscillatory member.

Abstract: A reactant gas is mixed intimately with a liquid and/or particulate solution in a pressurized container and agitated with high energy. Mixing occurs initially by spraying the liquid and gas together to form an emulsion with great surface contact between the reactants, and the emulsion mix is improved and maintained by agitating in the container. The container is carried on oscillatable supports and is driven by an imbalance drive for vertical oscillation in any of several configurations. Loose mixing balls or bodies are optionally carried in the container to increase the agitation and to grind solid particles carried into the solution. The grinding bodies also source protective reaction-deposited layers from the solid particles to speed the reaction. Pressure and temperature of the process is readily controlled.

Abstract: Apparatus for processing ore by a combined milling, froth flotation and size classifying operation, wherein A milling chamber contains elastomeric milling bodies situated between first and second screens. The milling chamber is provided with an agitating means for vertical vibration of the milling bodies. A first outlet on the milling chamber removes froth. A second outlet below the first and lowermost screen removes the coarser components.

Abstract: Grinding apparatus wherein a cylindrical or polygonal tank of any material and a proper length lined on the inside surface with any of such materials as a rubber, synthetic resin, brush, fiber and paper pulp. The tank is held at one end and is rotated at the other in a universal joint end. Thus, grinding agents and materials to be ground are put into the tank at the held end. A centrifugal motion is generated on the inner peripheral surface of the tank and the materials will flow to the other end and be ground while rotating spirally due to the centrifugal force on the inner peripheral surface of the tank while in contact with grinding agents. Further, a grinding apparatus wherein a cylindrical or polygonal tank of any material and a proper length, as required, lined on the inside surface with any of such materials as a rubber, synthetic resin, brush, fiber and paper pulp is held at one end and is held at the other end with an arm made to make any proper circular motion with crank arms or the like.

Abstract: The jackets of rod-shaped supports, particularly jackets of welding electrodes, are removed by placing the jacketed support rods in a ball mill and grinding the jacketed rods to break up the jackets with steel rods constituting grinding members. This grinding operation takes place in a chamber having a perforate wall portion by which the broken jacket material passes and is transported, via a tube, to a fine grinder. Advantageously, the length of the container constituting the grinding chamber exceeds the length of the jacketed rods by only about 10% so that only a small axial shifting of the rods is possible and a transverse disposal of the rods is prevented. It is also expedient to fill the container to about 40% of its volume with the steel rod grinding members and to provide rapid closures for the containers for rapid charging of the jacketed rods and discharging of the dejacketed rods.

Abstract: A grinding method wherein a cylindrical or polygonal tank of any material and a proper length is lined on the inside surface with any of such materials as a rubber, synthetic resin, brush, fiber and paper pulp. The tank is held in a universal joint at one end and is rotated at the other end. Thus, grinding agents and materials to be ground are put into the tank at the held end. A centrifugal motion is generated on the inner peripheral surface of the tank and the materials will flow to the other end and be ground while rotating spirally due to the centrifugal force on the inner peripheral surface of the tank while in contact with grinding agents.

Abstract: An apparatus intended for carrying out various mechanico-chemical processes for production of borohydrides and comprises an airtight shell with three compartments. The top compartment serves as a material charging chamber, whereas the middle compartment accommodates grinding solids and a vibrator rod which passes through the charging chamber and is mechanically disengaged from the shell of the apparatus, the chamber with grinding solids being suspended on the vibrator rod. The bottom compartment serves for discharge of the disintegrated products therefrom. During operation of the apparatus, reciprocating motion is imparted to the vibrator rod along and around its own axis. This results in the grinding-solid chamber being set in motion so that the material fed from the charging chamber is vigorously disintegrated.

Abstract: A device employed with a vibratory apparatus such as a mill or the like which is used to change the lead angle between rotating eccentric weights. Eccentric weights are mounted at either end of a drive motor and caused to rotate with the motor shaft at specific angles with respect to one another to develop a specific vibratory action. At one end, the eccentric weight is fixedly mounted on the shaft. At the other end, the weight is rotatably mounted on the shaft. A stop mechanism is associated with the shaft adjacent the rotatably mounted weight to prevent the weight from pivoting through more than a predetermined angle. By rotating the motor and shaft in a first direction, the rotatably mounted weight assumes a position on the shaft at a first stop. When the motor is reversed, the rotatably mounted weight swings to a position at a second stop.

Abstract: Lead-acid storage battery plates damaged during battery manufacture are placed in a trough having an upward slope. The trough is vibrated causing the non-metallic components of the plates to be shaken free from the metallic components of the plates with the non-metallic components being reduced in size during the vibration process. The non-metallic components of the plates are discharged from the trough as a fine powder through suitable openings in the bottom of the trough while the metallic components climb the trough and are discharged at the upper end of the trough.