Abstract: Confectionery solution containing gelling agents such as agar-agar, tends ry markedly to form streamers or tails when being poured. The formation of tails or streamers is inhibited in accordance with the invention by the atmosphere in the environment of the pouring region being maintained at (a) a temperature at least equal to the temperature of the confectionery solution and (b) a moisture content at least equal to the equilibrium moisture of the confectionery solution.

Abstract: A process and an apparatus for producing a molded skin product such as an interior decoration member like an instrument panel for an automobile or other vehicle. The process includes charging a desired amount of synthetic resin powder into a treating container disposed facing a predetermined shaped molding mold surface. The mold surface is heated to a temperature of at least the melting temperature of the synthetic resin. The powder is spattered onto the mold surface by violently agitating the same by an agitation means whereby a fused coating of the powder is formed on the mold surface. The spattering is discontinued when the coating reaches a predetermined thickness. The mold surface is cooled thereby solidifying the coating to form the molded skin material. The molded skin material is then removed from the mold surface. The powder can be fluidized during the spattering.

Abstract: A pressing device for producing compacts from source material in powder form in a die-plate bore with a filling shoe and a feed tube with feedscrew as metering means of a reservoir for the source material powder wherein in the transport path for the source material powder, between the end of the feed tube and an outflow opening of the filling shoe, is a passing sieve with associated passing element for removing agglomerates in the source material powder.

Abstract: As in the conventional manner for molding an optical component, a molding cavity is used in combination with a relief chamber with which the molding cavity can selectively communicate. There is no communication between the relief chamber and the molding cavity while the latter is filled. The molding cavity is then placed in communication with the relief chamber. Subsequently, relative displacement of the relief chamber and the molding cavity parallel to the axis of the combination interrupts such communication. The optical component thus molded may be of any kind, such as an optical lens, specifically an ophthalmic lens.

Abstract: An apparatus forms granulates from a flowable viscous mass. The mass is delivered to a tubular body and flows downwardly from a lower slit thereof in the form of drops. An endlessly revolving belt travels across the slit in tight engagement therewith. The belt has orifices therein which intermittently open the slit to admit the passage of the drops. The drops fall onto a conveyor which travels below the belt in the same direction and at the same speed as the belt.

Abstract: A process and an apparatus for producing a molded skin product such as an interior decoration member like an instrument panel for an automobile or other vehicle. The process includes charging a desired amount of synthetic resin powder into a treating container disposed facing a predetermined shaped molding mold surface. The mold surface is heated to a temperature of at least the melting temperature of the synthetic resin. The powder is spattered onto the mold surface by violently agitating the same by an agitation means whereby a fused coating of the powder is formed on the mold surface. The spattering is discontinued when the coating reaches a predetermined thickness. The mold surface is cooled thereby solidifying the coating to form the molded skin material. The molded skin material is then removed from the mold surface. The powder can be fluidized during the spattering.

Abstract: An extrusion machine for making elongated articles of concrete by forcing the concrete through a mold, the article having a relatively large core. The machine is moved forwardly by reaction as the concrete is forced against the molded concrete. A rotatable spiral conveyor extends longitudinally of the mold and moves the concrete through the mold. A nonrotatable forming element in the mold forms the internal cavity. The element is immediately following the downstream end of the conveyor. The forming element has its lower edge positioned so that not more than 10% of the height of the forming element is below the lower edge of the conveyor the lower edge and lower sides of the element being free of any substantial ramp. The longitudinal center line of the element is higher than the center line of the conveyor and includes a ramp extending upwardly from the downstream end of the conveyor. The conveyor forces the concrete over the forming elements to form the concrete article.

Abstract: A molding apparatus for bite size pieces of candy employing coplanarly arranged mixing and dispensing trays having juxtapositioned openings in their rims and having a rack positioned below said dispensing tray for supporting a multi-cavity mold, the opening of which when mounted on said rack is exposed through an opening in the bottom of said dispensing tray, and means for rotating said dispensing tray relative to said mixing tray for placing on and removing from the mold from the rack.

Abstract: Apparatus for manufacturing a hollow concrete slab by a slide casting operation. The slab is formed with one or more cavities through the use of tubes of flexible material into which a pressurized medium, particularly water, is fed. The apparatus comprises a stationary base and a casting device arranged to travel in the longitudinal direction of the base. A number of parallel shaping pipes forming part of the travelling casting device and having a cross section corresponding to the desired cross section of the cavities to be formed are opened at both ends. The flexible tubes, which are fastened at their rear ends, to a pressured liquid source pass during the casting process from reels in the casting device through the pipes so as to give the cavities their final form.

Abstract: A forming machine for chocolate and the like which comprises, located directly downstream of the hopper, a metering device having a contoured mixing and metering cavity which accommodates a rotatively driven rotor provided with disk-like spaced-apart collars and with rotary pistons respectively in the form of bridges interconnecting said disk-like collars axially. On the interior of said mixing and metering cavity, said rotor defines, accordingly, movable metering chambers in the shape of annular segments at one side, in each whereof there is respectively reciprocable a detent segment of a respective oscillating delivery disk valve and formed on a common shaft element, and a mixing chamber at the other side. Provided in said valves is a throughgoing passage which opens below the forming machine lower plane, and a depression for the unhindered passage of the respective rotary piston.

Abstract: A device and a method for the manufacture and processing of biscuit mixture shapes, including pressing pick up devices by means of a drive with their forming chambers against the floor of a trough filled with biscuit mixture, and while there, rotating them by means of a drive by 360.degree., while a drive turns the trough somewhat further. Subsequently the pick up devices are raised and placed by a drive in a position above a band conveyor with baking sheets. By means of a drive the ejectors are then moved into the forming chambers and the formed biscuits are deposited by stripping device onto the baking sheet. The baking sheet is fitted with recesses of specific design. The band conveyor transports the formed biscuits into a plant comprising an oven, a cooling device, a second heating device, a removal device and stacking chambers for baking sheets. The removal device is largely identical with the mixture pick up device. The trough receives a supply of mixture which is controlled by a level indicator.

Abstract: Polymeric foam, particularly polyurethane foam block, is produced in a stationary, longitudinally-extending, channel-shaped, mould (1a). A mixture of foam reactants partially expands in a vessel (40) and overflows down a fall plate (41) to the bottom of the mould. The vessel and fall plate are progressively transported from one end of the mould to the other to lay down partially expanded foam over the bottom of the mould (FIG. 1). The ends (11,12) of the mould may be opened to permit entry and exit of a foam lay-down unit (6) and transporting means (7) and to permit removal of the expanded foam strand (61) (FIGS. 6 and 7). The mould may be covered (14) after foam lay down and means (5) may be provided for removing gases emanating from the foam (FIG. 1).

Abstract: The present invention relates to a device for feeding a substrate into the cells of a set of growing cells placed underneath the device. The feeding device includes two horizontal feeding rolls parallel to each other. Each feeding roll includes a plurality of pin elements which project radially from the face of the rolls in an outward direction. The pins are placed in the normal planes of the axes of the feeding rolls in an alternating fashion with respect to the rolls. This arrangement allows the pins to interlock with each other in the vertical plane through which the substrate is fed. The substrate, by the effect of the circumferential velocity of the feeding rolls, is introduced into the cells so as to compact any material deposited earlier into the cells.

Abstract: Apparatus and method for forming hollow articles from plasticized materials are disclosed. A preform is partially formed under substantially no pressure on a preform core by introducing the core into a void-free charge of plasticized material that is placed in a preform cavity from a source of the plasticized material. After the preform core and preform cavity have moved together to define a preform mold space, the charge of plasticized material is subjected to a pressure forming step to form a completely packed preform on the core. The preform is then blow-molded in a blow cavity by introducing blowing gas into the preform through the preform core. Neck mold structure that strips and releases the formed article from the core is also disclosed.

Abstract: An apparatus for horizontally casting concrete comprises a horizontally foldable multilink support arm composed of an attachment frame, a proximal boom, intermediate booms, and a distal boom which are pivotally coupled by joint tubes, a drive mechanism composed of worm wheels mounted on the joint tubes and worm gears mounted on the booms and held in mesh with the worm wheels for enabling the support arm to move in articulatory motion, a concrete pressure-feed pipe extending from a pump along the booms and through the joint tubes with swivel joints, and an attachment jig mounted on the attachment frame for being mounted on a column.

Abstract: A method of fabricating a polycrystalline silicon wafer, which method advantageously has the steps of radially outwardly flowing molten liquid of silicon base material on the wafer forming surface of a turntable mechanism by means of centrifugal force, thereby forming a thin molten liquid layer in a prescribed atmosphere, and cooling and solidifying the same. An apparatus for fabricating the wafer is used to carry out the method with a recover tray arranged at the wafer forming surface for receiving the excessive silicon liquid scattered, and a wafer tray placed on the recovery tray, and the wafer forming surface is cooled with coolant flowing in the wafer forming mechanism. Thus, large crystalline grains can be grown on the wafer in free states with the atmosphere from the inner surfaces of the casting mold as the conventional method.

Abstract: A release and carry-out apparatus is disclosed for removing a mold from a molding such as a concrete panel, and carrying out the molding to a predetermined position. This release and carry-out apparatus comprises: a base frame; an erectable frame erectably supported by this base frame; and a carrier for receiving only the molding disposed on a mold bed firmly, which bed is secured to this erectable frame when the erectable frame is erect, and carrying the molding to the predetermined position.

Abstract: A method and apparatus for manufacturing a multilayer powder blank, and the product of such manufacture which is suitable for subsequent extrusion. A hollow cylindrical container with its central axis oriented horizontally is rotated while powder is allowed to fall from a powder distribution tube in the center of the container downward onto the inner surface of the rotating wall, thereby forming successive layers of powder which are maintained in position by centrifugal forces acting thereon. The powder blank consisting of the multiple layers is removed from the container, isostatically compressed, and finally sintered, with fusion of the outer powder layers into a fused, water-tight coating.

Abstract: Pressing device for producing compacts from source material in powder form, in particular pulverized nuclear reactor fuel having a die-plate contained in platen and a bore associated with a ram, for receiving source material powder, a filling shoe, and a reservoir for powder connected by a hose to the filling shoe. The device is characterized by a passing wheel in the filling shoe as filling aid means; a tube containing a feedscrew disposed between the reservoir and hose as metering means; the reservoir having a bottom part with a can type place-on part with an opening eccentric to the axis; a coupling part and a cover part are placed on the open part of the can, these parts are also provided with a passageway to the feedscrew eccentric to the longitudinal axis.

Abstract: Continuous hollow object casting machine comprises a plurality of chucks with means to convey the chucks through a helical path along a longitudinal, preferably a closed longitudinal, path, in the course of which the chucks are also rotated about an axis perpendicular to the primary helical path and the rate of movement there along being devised to permit substantially complete hardening of a molding material in molds carried by the chucks so that casts, with molten material therein, may be loaded at one end of the path and unloaded, with a hollow object molded therein, at the other end of the path.

Abstract: A machine for "dry mix" packerhead concrete pipe manufacture has two stations and a separable tubular jacket movable therebetween. A rotatable cylindrical packerhead is movable axially within the jacket and a "dry mix" delivery means deposits mix atop the packerhead as it rotates and moves vertically upwardly within the jacket. The packerhead distributes the mix thereabout to form a concrete pipe in the jacket. A radially expandable and contractable core is movable axially in a contracted condition to a position within the pipe and is then expanded. Vibrators within the core are operated to "redensify" the pipe; that is, to compact the mass thereof, to eliminate voids, and to relieve residual forming stresses therein. A guide ring is employed to align the contracted core axially with the pipe during entry and further guiding and supporting devices for the core are provided. Core entry and withdrawal is power actuated as is core expansion and contraction within the pipe.

Abstract: The present invention concerns the manufacture of objects made of plaster, essentially in the form of boards and, specifically, the pouring onto a moving conveyor of a mixture of plaster and water into a reservoir with an open bottom installed on top of said conveyor.It proposes to integrate the upstream rear wall of the reservoir within a surface of greater dimensions than the rear wall, and displacing said continuously, with the purpose of presenting a different portion of the surface as the upstream rear wall.The invention allows continuous cleaning of the upstream rear wall without disturbing the pouring process.

Abstract: A ridge remover for smoothing and shaping rod surfaces where jointure marks occur in fibrous rod manufacture when made using a porous belt garniture device.

Abstract: In extrusion apparatus of the type having a generally cylindrical roller, a stationary die head surface confronting the roller and defining therewith an extrudate chamber, and means for rotating the roller to force material through the chamber to an extrudate shaping orifice defined by the roller and a downstream portion of the die head, a bearing pad is interposed between the roller and the die head. The roller is biased against the bearing pad so that the pad serves to space the roller from the die head to accurately control clearance between the die head and roller at the extrudate shaping orifice.

Abstract: A toy casting machine including a base which has mounted thereon a crucible into which plastic materials may be placed for melting. The crucible is rotatably mounted to a sidewall and may be duped by an actuating mechanism which also moves a predesigned mold into position below the crucible. The crucible and machinery are entirely covered by transparent material to allow viewing the operation and to protect a child operating the machine. An isolating loading apparatus is provided to allow the machine to be loaded with raw material and molds without endangering the operator.

Abstract: The invention provides an improved method and apparatus for effecting the severing of successive gobs from a continuously extruded rod-like formation of organic thermoplastic material, followed by the successive transfer of the gobs to successive molding units which are continuously movable relative to the free-fall path of the gobs. Severing means are provided which are operative upon a vertically extruded rod-like formation of hot organic thermoplastic material. A plurality of molding members, each having an open top molding cavity, are moved in timed relationship to the gob severing means along a horizontal path adjacent to the free fall path of the severed gobs. Each gob is caught by a transfer device which is movable under the free-fall path of the gobs in timed relationship to the gob severing and the movement of the molding members.

Abstract: Process and apparatus for solidifying molten materials by pouring onto a substrate and cooling, in which undesired crystallinity is avoided by first forming a solidified protective stabilizing skin on the melt surface, e.g. by carefully controlled air cooling or dusting with powdered material, before more vigorous cooling by fluid coolant, e.g. air or water, directed against the solidified skin. Optionally, silicone liquids and/or kerosene or other hydrocarbons of lower boiling range are used in minor amounts to treat the melt before pouring to promote the formation of amorphous solidified material and provide increased hardness on aging. When using an endless belt as substrate, the plain solidification surface may be modified by superposing a skeleton framework to form selectively shaped tablet or bar molds. The process and apparatus are particularly applicable to the solidification of molten sulphur.

Abstract: Apparatus for the extrusion of a flowable mass onto a conveyor, comprises first and second cylindrical containers. The first container is disposed for rotation about a longitudinal axis and includes first passages for depositing the flowable mass. The second container includes a wall portion which contains a plurality of second passages. The wall portion is disposed against the first container, the latter rotating relative to the second container so that the first and second passages are periodically aligned to enable the flowable mass to be deposited onto the conveyor. The first and second containers define a gap therebetween which creates a negative pressure to suck-in excess mass from the outer periphery of the apparatus. A spatula is provided to push the mass into the gap.

Abstract: An apparatus is provided for the automated manufacture of heavy concrete objects, which apparatus may incorporate a continuous, rectangular assembly line path having a roller conveyor system for carrying molded concrete castings from a pouring station through a first and a second curing chambers to a stripping station, this roller conveyor system transcribing a closed rectangular layout with four right angle turns therein.

Abstract: A machine for making elongated articles of concrete or the like having reinforcing members extending therethrough, and in which at least one spiral conveyor forces concrete under pressure through a mold causing the machine to move forwardly by reaction as the material is forced against the molded portion of the article. At least one elongated reinforcing member extends through the machine and the mold, and the machine is provided with a support tube extending to the mold to receive the reinforcing member and to support the latter as concrete is directed into the machine. The support tube preferably has a longitudinal slot therein and is mounted to rotate around a longitudinal axis so that the tube can be rotated between a position with a slot opening upwardly and a position with the slot opening downwardly.

Abstract: A system for mass producing prestressed concrete railroad ties using a slip-forming method of casting concrete over a plurality of molds arranged side by side and end to end on a casting bed; a specially equipped continuous casting machine for slip-forming the railroad ties in an upside-down orientation; techniques and equipment for separating and removing finished railroad ties from the casting bed; a plant layout to facilitate casting and handling operations; a specially adapted apparatus for rotating groups of railroad ties to permit stacking thereof in right-side-up orientation.

Abstract: The disclosure is of a method and means for applying a flowable coating material, such as relining, to a tubular stack; e.g. chimney, flue or the like, by means of a distributor moved upwardly into the stack while supplying coating material to an upper surface of the distributor which is configured to cause the material to flow outwardly to the wall to adhere thereto. The apparatus includes selectively added extensions for moving the distributor incrementally through the length of stacks of considerable height, preferably by means of power-operated means; e.g., a fluid-pressure device.

Abstract: A cross flow filtration molding apparatus and method are disclosed which are particularly useful for forming complicated shapes from dispersions of particles in a liquid medium. Dispersion is pumped through a mold which has porous walls and a sufficient pressure differential is applied to drive a portion of the liquid medium through the porous walls which results in deposition of particles on the walls to form a shaped article. The shaped article may inherently have sufficient structural integrity, or it may be post-treated to provide additional structural integrity.

Abstract: An extrusion device for forming and shaping food product to a chosen cross section area and shape such as the filling for Chinese egg rolls, the product requiring mild compressive action for proper binding, and wherein mild shear forces acting on the product are effective to cause separation, breakup and damage. The apparatus comprises a housing with means for forcing the food product through the housing and in which the housing contains means defining a first section receiving a flow of the food product which initially shapes the flow into a predetermined shape and cross section, followed by a stabilizing section smoothly continuously transitioning from the first section and which has an outlet whose dimensions transverse to the longitudinal direction of movement of the product do not increase. By combining the first section with the stabilizing section food product is first shaped and then gently handled so that it binds together properly.

Abstract: A toy molding apparatus having a housing or container with a heat source therein surrounded by a heat directing baffle member, at least a portion of the baffle member being configured for receiving a plastic squeeze bottle containing a gelatinous substance therein, the substance being generally solid at room temperature and approaching a liquid state at approximately 105.degree. Fahrenheit. The bottle is positioned within the receptacle for heating by the heat source and upon reaching a fluid state it is poured into a separate mold member to set upon cooling.

Abstract: A machine having two packer heads operable to simultaneously make two concrete pipes. A pair of jackets mounted on a turntable are located in vertical alignment with two packer heads. A gear box mounted on a cross head is connected to downwardly directed shafts operable to rotate the packer heads. The cross head is movably mounted on an upright frame to lower the packer heads into the bottom area of the jackets. Separate controlled conveyors discharge concrete into the jackets above the packer heads. Separately rotatable funnels and stationary wiper blades are used to control the movement of concrete into the jackets. The packer heads are simultaneously rotated and elevated in the jackets to build up the cylindrical walls of the pipes. A dual bell packer is moved into engagement with the pallets at the lower end of the jackets to rotate and vibrate the pallets to form the bell sections of the concrete pipes. A pallet positioner is used to locate the pallets on the turntable.

Abstract: An apparatus of this invention can automatically produce flower-shaped decorations which may be used to decorate cakes. The apparatus substantially is characterized by a flower forming mechanism which comprises a cylinder into which a desired amount of raw material such as cream is charged, a pattern plate provided with a plurality of inclined apertures, a piston rod which extrudes the raw material through the pattern plate, means to form a stem portion of the flower and means to cut off the flower.

Abstract: A plastic wing nut with an internal thread, a mold therefor and a method of molding such a wing nut in which the wing nut is molded so as to have only a single internal thread thereby greatly simplifying the molding process is disclosed.

Abstract: Apparatus and a method for forming a uniform film of plastic material, having good optical characteristics, on a substrate are disclosed. The plastic material is supplied to and maintained under pressure in a distribution channel and is fed from the distribution channel through a narrow slot to the substrate. A forming member subsequently forms the plastic material into a uniform film on the substrate. The level of the plastic material in front of the forming member is limited to a range of values based upon the thickness of the film being formed.

Abstract: A system for filling containers such as for example, bottle molds intended for slush molding, with liquid such as slip. The containers are arranged along a line which is parallel with a track that guides the movement of a carriage. The carriage carries an arm that swings between two positions, one of which is raised above the line of the containers to permit movement of the carriage without interfering with the containers when desired, and the other of which is below the carriage and bringing the arm to a filling position relative to a container. The arm carries a filling nozzle which is intended to enter the mouth of the container, the nozzle having a probe which dips down into the container. Electrical circuitry is provided which for the most part is carried in the carriage, such circuitry cooperating with the probe of the nozzle and sensing elements on the track and carriage.

Abstract: A fluid polymeric ablator liner is cast onto the inner surface of a ramjet ombustion chamber which has been prepared with a screen liner substrate. A split mold is inserted through the nozzle and assembled inside the chamber allowing a thin layer of ablator to be cast and cured on the dome and nozzle regions of the combustion chamber.

Abstract: A process of molding polymeric material comprising causing heated polymeric material to flow in a predetermined direction in a mold and cooling the polymeric material forming a product exhibiting anisotropic properties including greater stiffness in the direction of flow than in any other direction. Also molding apparatus comprising two mold parts each having a mold cavity, the molding apparatus being so constructed and arranged that communication between the two mold cavities may be established and disestablished at will, means for admitting material to be molded into one of the mold cavities and by pressure differential causing flow of some of the material from said mold cavity into the other mold cavity when communication between the mold cavities is established, and means for cooling the flowing material whereby a product exhibiting anisotropic properties including greater stiffness in the direction of flow than in any other direction may be formed.

Abstract: A casting machine for casting concrete elements comprising a support frame continuously movable above a casting mould and provided with means for feeding concrete into the mould. A vibrating device is slidably supported by the support frame and is provided with locking means engaging said mould for momentarily fastening the vibrating device unmovably to said mould during vibration of said mould while sliding with respect to the support frame from a starting position due to the continuous movement of the support frame. The support frame is provided with means for slidable retraction of the vibrating device with respect to the support frame to said starting position after vibration of the mould and unlocking of said locking means.

Abstract: In a calender the nip between a pair of rollers, of which one is obliquely adjustable, is bounded at the sides by plates adapted to the geometrical shape of the nip region and provided with slots, into which a control beam, parallel to the obliquely adjustable roller, engages, the ends of the beam are joined to the bearings of this roller, and the plates are arranged on supporting plates so as to be displaceble by means of a guide device, so that the plates, on oblique adjustment of the roller, are moved along a path which is concentric with the surface of the roller which is not obliquely adjustable.

Abstract: Apparatus is disclosed for extruding filaments from synthetic polymeric particulate material which is conveyed to the melting area by means including a cylindrical barrel having an internal wall provided with a screw thread, and a rotating member mounted within the barrel being of a polygonal cross-section having a transverse dimension closely approximate to the inner diameter of the screw flights of the screw thread so as to allow movement of the material in a direction of the screw axis but to substantially prevent rotation of the material about the axis relative to the rotating member.

Abstract: Molten coke forming material is processed by infeed through sealing gates to an elongated housing within which it is mixed, cooled and compacted into a solid mass. When sufficiently hardened, the compacted mass is expelled from the housing. A gas may be injected into that zone of the housing within which the material undergoes mixing while in a molten state.

Abstract: Plasticizable material is pressure molded into articles free from flash in mold cavities of specialized molds defined by separate mold sections with removable cores. Prior to and during molding, the sections are held clamped together to fully confine the material which is pressurized by reducing the volumetric capacity of each cavity. This pressurization is maintained until the material is set or cured, and may be increased before final set to forge or densify the material further. The method employs a conventional press and two gangs of specialized two-piece, multi-cavity molds. The molds of each gang are supported in a horizontal row, with their juxtaposed flat faces and parting planes disposed vertically, for movement of each mold section flatwise endwise of the row to open and closed positions. The mold sections are clamped closed by power means which apply extraneous clamping pressure independently of the press operation.

Abstract: An apparatus for filling the cavities of a mold with powdered plastic material and for preliminary gelation of the material is used primarily for making synthetic shoe uppers. A carriage carries a mold beneath a distributor for depositing powdered material in the mold. A leveling means then levels the material at the top of the mold and the excess powder is returned to the distributor. The filled and leveled mold is then passed beneath a heat generator for effecting preliminary gelation of the powdered material.

Abstract: A hopper for mortar is provided with a gate slidable between one position wherein mortar is free to flow downwardly and out of the device and another position wherein the gate blocks the hopper outlet. The flanking walls of the hopper are provided with adjustable supports for striker posts. In use to fill a vertical joint between ends of two adjacent masonry blocks, the supports are adjusted to slightly enter and fully cover the opposite sides of the joint. With the hopper in place over the joint, the gate is slid open and mortar is permitted to flow, until the space between the ends of the two blocks, and between the two striker posts is filled. Then the gate is slid closed. As the device is lifted straight upwards, the striker posts which preferably present convex surfaces toward the mortar, automatically tool the opposite sides of the joint.

Abstract: Resinoid wheels are continuously produced by preparing resinoid abrasive compositions each different in the size of abrasive grains contained therein, placing the abrasive compositions into a die in the form of superposed layers, molding the superposed layers into a block, heating the block by a high frequency heater, passing the heated block through multiple pairs of rolls to roll the block into a sheet, blanking out circular pieces from the rolled sheet and baking the circular pieces.