Abstract: There is disclosed an apparatus for coating sheet material. The apparatus includes a rotatable backing roll (4) upon which a sample of sheet material may be mounted to form a cylinder, a coating head (9) including a blade (22), an outlet (21b) for dispensing a coating composition and a supply means (18) for supplying a coating composition to the outlet (21b) in the region of the coating edge of the blade (22), and means for enabling the coating head (9) to be moved in operation parallel to the axis of rotation of the backing roll (4) and in contact with the sheet material mounted thereon whilst the backing roll (4) is rotated, whereby a strip of sheet material may be coated of resultant helical form, wherein the supply means (18) includes an element which comprises a matrix of tubular passageways (19) longitudinally disposed with respect to the flow of coating composition through the coating head (9).

Abstract: A device as disclosed for spraying a protective coating onto the white sidewall portion of tires. The apparatus includes a support for supporting a tire for rotation within a predetermined spray area and a spray head mounted above the spray area wherein the spray head may be moved into close proximity to the white sidewall portion of the tire. The spray head includes a pair of sensors for sensing the height of the spray head above the tire and the particular location of the white sidewall portion along the side of the tire. In addition, a pair of motor controlled actuators are provided for moving the spray head in response to signals received from the sensors such that the spray head is accurately positioned prior to the spraying operation.

Abstract: Apparatus designed to coat the internal surfaces of tubular structures, and particularly for coating small diameter tubular structures having porous walls with a controlled coating material which may be a polymer, for example. The arrangement includes structure for rotating the tube to be coated simultaneously with structure for moving a coating applicator apparatus longitudinally through the tube for imparting an evenly dispersed coating throughout the longitudinally extent thereof. The arrangement is such that the apparatus may, selectively, impart a water or other solvent spray against, the already formed coating for extraction of a solvent from the coating. The coating characteristics (i.e., uniformity, thickness and pattern) are controlled by the use of a sintered metal and/or porous applicator, together with a controlled pressurized source of coating material.

Abstract: An apparatus for treating a surface of a wafer includes a wafer-holding device for holding the wafer horizontally at the center of the lower surface of the wafer to rotate the wafer around a predetermined rotation axis and a nozzle for supplying a flow of treatment liquid to the upper surface of the wafer held by the wafer holding device. The nozzle includes a supply member for supplying the treatment liquid at a predetermined flow speed at a predetermined position located higher than the upper surface of the wafer, and a member for changing the flow speed of the treatment liquid to a smaller speed at the predetermined position and providing a flow speed component in a direction parallel to the upper surface of the wafer. The flow speed of the treatment liqid at the predetermined position is thus controlled and the treatment liquid flow reaches the wafer upper surface with a speed component parallel to the upper surface of the wafer.

Abstract: Disclosed is a coating apparatus for applying a resist or developing solution to a semiconductor wafer. This coating apparatus comprises a plurality of nozzles supplied with various resist from a resist source and each adapted to drip the different solution onto the wafer, a vessel in which the nozzles is kept on stand-by, while maintaining the liquids in a predetermined state in the vicinity of discharge port portions of the nozzles, when the nozzles need not be operated, and a nozzle operating mechanism for selecting one of the nozzles kept on stand-by in the vessel, and transporting the selected nozzle to the location of the wafer, whereby the resist is applied to the wafer by means of only the nozzle transported by the nozzle operating mechanism.

Abstract: A machine for applying tire paint and tire sealant to recapped tire sidewalls and interiors, respectively. The machine includes a pair of tire paint applicator pads which are carried by a frame and carriage capable of reciprocal motion in three different directions to bring the applicator pads into selective engagement with tire sidewalls. The machine also includes spray nozzles carried by an associated frame and carriage for bringing the nozzles into a position to direct tire sealant into the interior of an associated recapped tire.

Abstract: A spray disk (4) rotating at high speed and connected to high voltage surrounds a guide rod (30) and can be reciprocated up and down along said guide rod, the latter being of a stationary arrangement. This permits the use of drive means (34, 50) which extend along the guide rod (30) so that for the up and down motion of the spray disk (4) there are no carrier rods required which protrude beyond the stroke of the spray disk beyond the device.

Abstract: Vessel mouths (1) are provided with a silane coating in order to improve the pouring behavior. For this purpose, there is an apparatus which has, on a rotatable nozzle holder (14), several spray nozzles (16) and blowing nozzles (17) directed tangentially to the edge (1a) of the vessel mouth (1). A stationary nozzle mandrel (12) forms, by means of its lower centering portion (13), a centering means for the vessel mouth (1). An air flow flows from the centering portion (13) out of air nozzles (20) directed rearwards and prevents spray material from penetrating into the vessel (2). The spray residues and solvent vapors which occur are sucked off from a suction bell (21) surrounding the vessel mouth (1).

Abstract: An apparatus for dispensing high viscosity paste materials onto a seal edge includes a conditioning chamber which permits the build up of a back pressure to aid the exit of the paste from the outlet orifice of the chamber. An auger which dispenses the paste from a hopper to the seal edge has a unique thread pitch to also aid in the dispensing of high viscosity paste to the seal edge.

Abstract: Included within an enclosure is a hanger for supporting and rotating a garment in the vicinity of spray and heater means. The spray means is provided to direct a chemical toward the garment with the heater means applying heat to the sprayed garment to cure the applied chemical thereon. Motivation means is also provided to move the spray and heater means to maintain a selected distance between them and the surface of the garment during processing. All of the functions occur in response to signals from a control unit to control, apply and cure the chemical to and on the surface of the garment.

Abstract: A spray gun mover includes a lance extension carried by a movable frame mounted on forward and rearward struts of different lengths. The struts are pivoted to the movable frame at their top ends, and to a stationary frame at their lower ends. A coating apparatus is mounted on the distal end of the lance and is moved along the axis of a rotating drum through a predetermined path, preferably comprising a substantially straight line. A second lance is provided for coating the drum exterior.

Abstract: A system is disclosed for painting components of an automobile more efficiently and more economically. To achieve the efficient production of painted components, the painting system includes parallel input and output main transfer lines and a plurality of sub transfer lines which are located perpendicular to and between the parallel input and output main transfer lines.A plurality of input intersections are formed between the input main transfer line and the sub transfer lines, and a plurality of output intersections are formed between the output main transfer line and the sub transfer lines. Each sub transfer line includes a turntable within a painting booth which is located at a central portion of each sub transfer line and a painting device is located at the side of each turntable.Further, each sub transfer line includes at least an input side waiting position and at least an output side waiting position.

Abstract: In a rotary painting machine having a number of angularly spaced barrels rotatably mounted on an indexing turntable for receiving parts to be painted and a painting station into which each of the barrels is capable of being indexed by rotating the turntable, an apparatus for supplying paint to the rotary pointing machine includes painting spray guns of a number equivalent to the number of barrels. The spray guns are arrayed in spaced side-by-side relation adjacent the painting station and are capable of being transversely reciprocated in unison to shift a predetermined spray gun into opposition with whichever of the barrels is located in the painting station, thereby allowing the batch of parts in each barrel to be sprayed with a paint prescribed for said batch.

Abstract: Method and apparatus for spray coating the interior cavity of a plastic bottle with a barrier material. The apparatus includes a spraying assembly for moving a nozzle body into and out of the interior cavity of the bottle while the bottle rotates about its central longitudinal axis. A spraying control system causes a predetermined amount of coating material to be dispensed to selected regions of the bottle as a function of the nozzle body linear displacement relative the bottle.

Abstract: A frit dispensing device includes a hopper which dispenses the frit material to the seal edge of a CRT funnel. The device centers the funnel and raises the funnel to place the seal edge in a reference plane a desired distance from the hopper. Funnel orientation members engage the funnel to place the funnel in the desired orientation with respect to the hopper. The funnel is rotated beneath the hopper and frit material is uniformly dispensed to the entire seal edge.

Abstract: An apparatus for developing a resist film coated on a rotatable base plate, comprising means for supporting and rotating the base plate and nozzle means for feeding a developer onto the resist film. The nozzle means comprises a nozzle arm extending over the base plate and having a plurality of nozzles arranged along the length of the nozzle arm. Disclosed also is a method for developing a resist film coated on a rotatable base plate with a developer fed from a plurality of nozzles arranged on a nozzle arm along the length of the nozzle arm. The method comprises feeding the developer from th respective nozzles onto the resist film while rotating the base plate and while scanning the nozzle arm over the resist film.

Abstract: A cleaning device for a filter press wherein a spray tube for cleaning filter cloths of the filter press is moved in alternate directions during cleaning in a vertically downward position depending from a second carrier movably supported on a first carrier and cleaning liquor is sprayed through spray nozzles provided in the spray tube. When a cleaning cycle is completed, the spray tube is returned by a rack rod and pinion to a slanted waiting position above the filter plates.

Abstract: The present invention relates to a machine for the continuous treatment of a body of revolution. Treatment stations are provided on the periphery of a rotatable drum. The machine comprises at the location of the zone of treatment a continuous guiding belt driven by a prime mover. On one side or the other of such belt, or on both sides thereof, there are disposed elements constituting a fixed guiding guard. The drum drives the bodies of revolution which are to be treated, in rotation by friction as they pass along the guard and the belt, the treating operation being effected when the treatment stations and the bodies pass through the zone of treatment. The bodies can themselves turn, if the drum is stopped, by friction between them and the movable belt, in order to avoid defects in varnishing or other similar treatments in case of breakdown of the driving of the drum. The apparatus is particularly useful in the continuous varnishing of bodies of revolution.

Abstract: An apparatus for applying adhesive to automobile windshield glass panels which includes a turn table assembly for supporting a glass panel and moving it so that the peripheral portion of the glass panel is continuously exposed to an adhesive applying nozzle which is supported by an industrial robot. A control circuit such as a microprocessor is provided and has a first memory of the order in which different types of glass panels are supplied and a second memory including informations as to the controls of the turn table and the nozzle for applying adhesive to respective ones of the glass panel. The control circuit determines the type of the glass panel which is mounted on the turn table in accordance with the first memory and address to the second memory so as to control the movement of the turn table and the nozzle.

Abstract: A liquid spray apparatus provides predetermined, uniform quantity of liquid (such as photoresist developer) per unit area of surface by a parabolic cam mechanism, arranged to repeatedly reciprocate a nozzle at a predetermined varying linear velocity a plurality of times over a spinning surface, such as a semiconductor device wafer. The mechanism moves the nozzle at a parabolic varying velocity whereby the liquid is deposited at a uniform quantity per unit area. The cam is continuously rotated and engaged with a spring-biased cam follower during the spraying period. The cam follower is engaged and disengaged with the cam by a programable timer defining the spraying period.

Abstract: An automatic fluid dispensing apparatus for coating to a substantially uniform thickness a rotating surface, such as the surface of a semiconductor wafer, with a viscous liquid, such as a slurry of passivating glass. The wafer rotation rate is related to the radial movement of a dispensing arm to maintain a constant tangential velocity of the wafer at the radial location of the dispensing arm while a bead of the slurry is dispensed at a constant rate proportional to the tangential velocity to provide a spiral beaded coating of constant volume per square. By allowing the bead to heal during or following the dispense cycle, the viscous liquid spreads to a uniform thickness.

Abstract: A tracking nozzle is provided for applying a viscuous tire sealant to the interior of the tire. The tracking nozzle may be adjusted to move across the interior surface of the tire in a presettable number of steps, each step being of a preselected width. The amount of sealant applied in each of these discrete sealant application locations may be varied in order to produce a sealant layer of any desired thickness and contour.

Abstract: The present invention relates to a rotary coating apparatus wherein liquid to be applied (diffusion agent, photo resist, and others) is dropped through a nozzle on a rotating glass plate or semiconductor wafer seated on top of a spindle to form coatings over their surfaces and a cap is fitted on the lower surface of the nozzle when not in use to provide sealing so that the space enclosed with said nozzle and said cap is filled with solvent vapor.

Abstract: A video disc includes a magnetic material applied thereon in such a manner that the orientation of said magnetic material is gradually intensified from the outermost track of the video disc to the innermost track thereof, starting from zero orientation at the outermost track.

Abstract: A system is described for coating a cylindrical surface of a long thin workpiece by a process which includes flame spray coating that heats the workpiece to a large portion of its melting temperature and which is followed by grinding of the coated cylindrical surface, which produces a final coated surface of more uniform coating thickness than heretofore. The workpiece is rotated about a vertical axis, to avoid slight bending deformation of it, the upper end of the workpiece is allowed to move slightly towards and away from its opposite end, and an upward bias is applied to the chuck device that engages the upper end of the rotating workpiece to avoid column-like buckling of it.

Abstract: An apparatus for applying sealant to a side seam in a container sidewall formed by overlapping portions of the sidewall is provided. The apparatus includes conveying means operable for moving a container into and away from a sealing station. Sensing means is located adjacent the conveying means and is operable for sensing the rotational position of a container sidewall. Drive means is operable for selectively rotating a container to a predetermined rotational position. A sealant dispensing means is positioned adjacent the conveying means at the sealing station and is operable for dispensing sealant onto the seam along substantially the entire length of the seam by a movement of the dispensing means relative to the container. A second sealant dispensing means and station can be provided adjacent the conveying means for applying sealant to a seam between a bottom member and the sidewall of the container.

Abstract: A bonding applicator adapted for use in combination with an apparatus for forming flexible tubing, whereby a continuous, reinforced, flexible tube is formed from an indefinite length of plastic tape or ribbon, together with an indefinite length of wire, which are wound and bonded together by the present bonding applicator to form a continuous tube. The bonding applicator includes a reservoir having a suitable solvent stored therein, and a supply tube connecting the reservoir to the applicator which is provided with an ON/OFF valve operated by the positioning of the applicator arm. A second flow-control valve feeds the solvent to an applicator pad which engages the bonding edges of the overlapping ribbon as it wraps around the tube-forming mandrel.

Abstract: A highly glossy skin of silicone rubber is produced on a roller body. The resultant rollers are adapted for use in the calendering of sheets and films of synthetic resinous material to produce a mirror-like finish thereon.

Abstract: An apparatus for coating the threads of articles such as fasteners, pipes, plugs, valves, fittings, etc., includes an indexing table for intermittently moving the articles along an arcuate path, rotatable article spindle assemblies on the table radially spaced apart an equal distance and being stopped at a dispensing station and at a wiping station spaced therefrom equal to such distance. A dispensing head at the dispensing station includes a nozzle for delivering a coating of the sealant onto the threads of a rotating articles, and a wiper wheel at the wiping station wipes the coated threads and presses the coated sealant into the thread roots during rotation of the wheel which likewise rotates the coated articles.

Abstract: Although the method and apparatus of the present invention can be utilized to apply either a uniform or a nonuniform covering of material over many different workpieces, the apparatus (20) is advantageously utilized to apply a thermal barrier covering (64) to an airfoil (22) which is used in a turbine engine. The airfoil is held by a gripper assembly (86) while a spray gun (24) is effective to apply the covering over the airfoil. When a portion of the covering has been applied, a sensor (28) is utilized to detect the thickness of the covering. A control apparatus (32) compares the thickness of the covering of material which has been applied with the desired thickness and is subsequently effective to regulate the operation of the spray gun to adaptively apply a covering of a desired thickness with an accuracy of at least plus or minus 0.0015 inches (1.5 mils) despite unanticipated process variations.

Abstract: A cleaning system for cleaning cylinrical filters includes a housing having an opening on one side thereof, a motor driven turntable for supporting a filter to be cleaned, a plurality of spray nozzles selected to provide spray at predetermined heights and at predetermined distances from the perimeter of the filter to be cleaned, a high pressure pump for supplying cleaning fluid to the cleaning nozzles and first and second rinse nozzles, the first rinse nozzle being adjustable in both the vertical and horizontal directions relative to the filter to be cleaned, the second nozzle being horizontally adjustable to clean the bottom pan of the filter to be cleaned, the first and second rinse nozzles being connected to a water source at normal main pressure. Each of the external wash nozzles above a predetermined height from the bottom of the filter being individually controllable to provide a proper wash spray for optimum cleaning of a filter.

Abstract: Lengths of tubing, especially that type of tubing suitable for use in medical equipment and devices, are weakly bound into a coil shape in order to facilitate handling and storage thereof while at the same time placing the tubing into a form that will make the full length thereof readily available by merely applying a slight pulling force to the ends of the coiled tubing. The solvent is applied in a very narrow uninterrupted stream, which stream tracks along one or more locations on a length of tubing that has been wound around a mandrel, which stream is dispensed by a mechanism that simultaneously carries out such tracking in a manner that is synchronized automatically with the dispensing of the stream and without the need for separate control mechanisms with the result that the tracking and dispensing are carried out at substantially the same ratio, with the same general consistency or inconsistency of travel, to the extent that the amount of solvent dispensed per turn of the coil is inherently uniform.

Abstract: This is an apparatus for coating the inside of a pipe with a wear-resistant material and is more specifically concerned with an improved production machine for producing large size pipe.

Abstract: A method of forming a puncture preventing layer on an inner surface of a pneumatic tire including the steps of extruding sealing material and pulverizing the extruded sealing material into fine particles for coating the inner surface with a layer of the sealing material under pressure through action of centrifugal force. For effecting the above described method in an efficient manner, there is also provided a puncture preventing layer forming apparatus which includes arrangements for holding the tire, extruding the sealing material, and pulverizing the extruded sealing material so as to be coated onto the inner surface of the tire through the action of centrifugal force.

Abstract: An apparatus for the automated coating of graphite electrodes comprises a carriage shiftable parallel to the coating apparatus between a station in which the graphite electrode is preheated and a station in which the preheated electrode is positioned opposite the coating station onto which the electrode is then gripped between a pair of contacts and rotated at variable speeds while all of the coating and surfaces treatment tools on a carriage flanking the electrode are brought into play successively by reciprocation of the tool carriage alongside the electrode.

Abstract: In making a protective glove, a lightweight fabric lining is mounted on a rotatable form beneath a distributor of fluid coating material. The form is rotated while the coating material is allowed to flow by gravity from the distributor onto the lining on the form. Initially the form is tilted so that the fingers are inclined upwardly and the coating material is flowed onto a zone embracing the junction of the fingers and thumb with the body of the glove. The form is then tilted so that the fingers are inclined downwardly and the distributor is traversed relatively to the form so as to coat successive zones of the lining until the entire lining is uniformly coated.

Abstract: Apparatus and method for rebuilding the internal surface of a cylindrical object, including a mandrel for supporting the object for rotation about its longitudinal axis, and a wire-fed welding torch positionable adjacent to the interior surface of the object. The welding torch is movable axially with respect to the object during the rotation thereof, so as to deposit material about the interior of the object.

Abstract: In a spraycoating apparatus for round workpieces such as drums, the drums are supported on turning cones while being sprayed. The turning cones are supported on pins moved round in part of a circle from an inlet to an outlet about a horizontal axis. Spray units for putting on the spraycoating material are able to be changed in angle and to undergo adjustment.

Abstract: In an apparatus for coating cylindrical graphite bodies, a pair of shafts are arranged in a closely spaced apart relationship with their respective axes lying close to the horizontal in respective parallel planes and slightly tilted in opposite directions in those planes, so that the shafts cross one another with none of their surfaces being parallel and form between them a guideway for a graphite body to be coated, the rotation of the shafts in the same sense causing the body to advance to a coating station arranged alongside the shafts and electrodes positioned above the guideway to form a coating-bonding electric arc with the body, which is supplied current through the shafts. The rotation of the shafts is reversible for advancing the graphite body back and forth past the coating station for the application of multilayered coatings.

Abstract: The apparatus for applying a bead of sealing material to a sealing surface of various size cathode-ray tube funnels comprises two stations. Each station is automatically adaptable for receiving different size cathode-ray tube funnels and includes means for raising and lowering the funnel. Included is a carriage moveable between the two stations. The carriage has means for distributing a bead of sealing material and means for vertically locating the position of a tube funnel.

Abstract: A liquid dispenser is disclosed which is arranged to dispense a fixed amount of liquid on a workpiece and is then moved away from the workpiece so that no further drops of the liquid fall on the workpiece.

Abstract: Method and apparatus for mixing particulate materials, such as sand, gravel, and cement to form a concrete mix, and for mixing water with the concrete mix to form concrete, and for applying the concrete to a structure such as a pipe, wherein a controlled amount of aggregate is placed on a moving belt and leveled to further control its amount, and then a controlled amount of cement is placed upon the leveled aggregate and leveled to further control its amount, and then the materials on the belt are mixed by spiked rollers dipping into the mixture, water being added to form the concrete, and the concrete being impelled against the object by being passed between high speed rollers.

Abstract: The apparatus of the invention employs a gas torch which has the feature of selective addition of metal powder to the gas flow. In use, the torch is caused to make a continuous succession of traverses of a workpiece region for preheating purposes and then, without interrupting the continuous operation of either the torch or the traversing cycles, a controlled flow of metal powder is caused to enter the torch flow, enabling the bonding and progressive building of a metal coat to desired thickness. In the embodiments described, first and second different metal powders are thus successively coated to the substrate without interrupting the continuous operation. Different embodiments are described in the particular context of applying uniform circumferential coatings to a cylindrical workpiece such as a shaft.

Abstract: An apparatus for coating a glass container with a layer of plastic whereby the container rotates about a horizontal axis and moves past a coating station. A plurality of liquid applicator nozzle means, positioned above the coating station, supply uncured plastic liquid to associated areas on the container. Means are provided for supplying predetermined quantities of uncured plastic liquid to respective ones of the nozzle means such that each nozzle means provides a coating of desired thickness and composition on its associated bottle area. The container is also rotated during the subsequent curing of the plastic.

Abstract: An apparatus for coating graphite electrodes comprises a support having parallel horizontal guideways at one end of which is a fixed headstock whose spindle is coupled by gearing to a lead screw and is driven at a constant speed. At the other end of the guideways is a movable tailstock whose spindle is clamped by an electric motor and slip clutch against an electrode supported between the spindles. The lead screw drives a longitudinal slide which carries a plurality of cross-slides including a cleaning tool, a metal-depositing spray head, an arc-depositing head and a grinding device each on a respective cross-slide. The entire unit is enclosed in an acoustical housing having a lid which can be opened to permit lowering of the electrode into place and a door through which the operator can have access to the apparatus.

Abstract: Resin is sprayed onto a mandrel by traversing a nozzle axially of the mandrel, reinforcement is applied on the resin layer and continuous filament is wound on the reinforcement and resin. To control the amount of resin sprayed onto particular locations of the mandrel, auxiliary means move the nozzle relative to the mandrel in addition to the axial-traversing movement, such as by moving the nozzle toward and away from the mandrel or by turning the nozzle. Such turning can be about an upright axis to displace the depositing location of the resin spray axially of the mandrel, or about an axis generally parallel to the path along which resin is ejected from the nozzle in a flat fan-shaped spray to change the plane of the spray from a position generally parallel to the axis of the mandrel into a position at a substantial angle to the axis of the mandrel.

Abstract: A machine and method are disclosed which provide an efficient means for coating the annular surfaces on a plurality of workpieces. The workpieces are moved relative to a gun which sprays a coating material. As each workpiece passes within the spray, the gun moves alternately back-and-forth such that the center of the spray follows the curvature of the annular surface. Simultaneously, the workpiece rotates so that the entire surface is coated. The machine is provided with a camming mechanism for moving the gun, one motor for driving the camming mechanism, another motor for rotating the workpieces, and a series of belt and chain drives for synchronizing the motion of the gun with the movement of the workpieces.

Abstract: Apparatus for automatically controlling the deposition of hot glue or the like dispensed from the nozzle of a hot melt dispensing machine along a circuitous path upon an upper surface of a work-piece preparatory to its gluing assembly to a complemental member, including a work table for support of a work-piece on which the glue is to be deposited, manually controlled mechanism for initiating a rotative cycle of operation of the work table, mechanism for supporting the nozzle of the glue dispensing machine above a work-piece supported on the work table, a cam rotable in unison with the work support table, and a cam follower on the nozzle support mechanism and operative to move the glue nozzle in a horizontal, rectilinear path over the work-piece for depositing the glue along a circuitous path required of the work-piece as controlled by the cam.

Abstract: Method and apparatus for applying a continuous layer of glass frit to a connection or sealing edge surface of the funnel portion of a picture tube. The glass frit flows onto such surface from a nozzle of a glass frit containing pot while the funnel portion is carried by a turntable. Means are provided for rotating the turntable at such a speed that the relative speed, between the nozzle and the connection surface positioned therebelow, is substantially inversely proportional to the width of the connection surface.

Abstract: A disk to be coated on both sides in rotatively supported within an annular housing of a larger internal diameter. Means traverse and coat each side of the rotating disk. The inner housing wall is disposed transversely to the disk and has an annular slot operatively associated with the disk whereby excess coating material is spun off the disk and into the housing. The housing is radially of a triangular cross-section, the apex offset from said disk whereby said spun off material strikes an inclined internal wall surface of the housing. Means orbit a plurality of such disks about a central axis and through a plurality of movable treating stations.