Abstract: A system for the treatment of continuous metal webs facilitates both continuous annealing and hot-dip coating operations interchanging from annealing to a combined annealing and coating, and vice-versa. The system has an annealing station common to both operations as well as web feed and discharge sections and web entry storage and web discharge storage stations associated therewith.

Abstract: A process of applying and drying a liquid lubricant on a metallic material to be mechanically worked has the steps of passing a metallic material through a coating container with a lubricant so that the lubricant coats the metallic material and the latter exits from the coating container through an opening, removing the superfluous portion of the lubricant without contacting the same with outside air, and advancing the lubricant coated metallic material through a drying channel in which air is urged in disturbed state. An arrangement for performing the method is also provided.

Abstract: A method and apparatus for forming an electrically conductive layer on a corrosion-resistant layer which covers a cable. The cable is passed through a powder accumulating tank in which are mixed an electrically conductive powder and binder powder so as to allow the mixed powder to initially adhere to the surface of the cable. The mixed powder is then pressed against the surface of the cable first at a cable outlet of the powder accumulating tank and then with a powder applying device in which an endless powder applying belt or cloth is rotated around the cable at a rotational speed dependent upon the linear speed of the cable. The surface of the cable is then heated to melt the binder powder and cause the electrically conductive powder to yet more firmly adhere to the surface of the cable. The cable is then cooled and wound.

Abstract: A drying oven for an indefinite length of material having a drying chamber surrounded by an annular heat exchanger, the drying chamber having an inlet and outlet for material passing through it. The heat exchanger has heat exchange members defining flow passages extending axially and around the chamber and having an incoming passage interconnected with an outgoing passage by means of the drying chamber.

Abstract: Apparatus for curing a bonded, air-permeable web. The apparatus includes drying means (16-26, 42, 48, 54, 56 and 80) for passing heated air at a predetermined temperature through the web 10 for a predetermined time. Means (128, 132, 134, 136, 150, 160, 164 and 166) are provided for generating a first signal representing the pressure drop, at a predetermined velocity, across the web 10 outside of the drying means (16-26, 42, 48, 54, 56 and 80). Means (68, 108 and 110) are also provided for generating a second signal representing the pressure drop across the web (10) inside the drying means (16-26, 42, 48, 54, 56 and 80). Means (120) responsive to the first and second generated signals control the velocity of the heated air passing through the web so as to maintain the pressure drop across the web 10 inside the drying means (16-26, 42, 48, 54, 56 and 80) equal to the pressure drop as measured by the means (128, 132, 134, 136, 150, 160, 164 and 166) for generating the first signal.

Abstract: Indefinite strand yarn is steam and heat treated in an enclosure. The yarn travels in an indefinite length moving coil through a tunnel that extends through the enclosure, with steam being supplied to the enclosure and the exhaust pipes leading from adjacent the inlet and outlet of the tunnel to a blower for exhaust to the exterior of the enclosure. Periodically, the buildup of yarn filaments and partially solidified condensate on the interior surfaces are removed by spraying liquid solvent along such surfaces, preferably with nozzles that spray solid cones of liquid solvent axially down the various pipes and automatic timed controls for sequencing such spraying.

Abstract: Apparatus for practicing the process of the present invention includes a flashing section which emits high-velocity, hot air onto the substrate, and a drying and curing section disposed downstream of the flashing section which emits high-velocity, hot air and radiant energy onto the substrate. The flashing and drying/curing sections are fluidically connected to an exhaust duct disposed upstream of the flashing section whereby the spent hot air, and entrained volatiles, are exhausted and recirculated for subsequent flashing and drying/curing process steps. The flashing section comprises air knives having their exhaust directions inclined in the upstream direction toward the exhaust duct, and fresh ambient air may also enter the exhaust stream from a downstream position so as to alter the percentage of volatiles within the recirculated air stream.

Abstract: A cladding process and apparatus in which steel strip or sheet is cladded with a metal of lower melting point, e.g. lead, by maintaining a bank of constant level of the molten cladding material between a belt and the strip or sheet substrate which passes along an inclined path and is cooled to harden the molten material thereon. During the cooling process the applied material is compressed against the substrate.

Abstract: A method of coating an optical waveguide filament employing a die body having an at least partly tapered central aperture and radial means for introducing coating material to the central aperture is disclosed. The method includes exposing the optical waveguide filament to the coating material within the tapered aperture of the die body. The die body and an apparatus for coating the filament is also disclosed.

Abstract: A method of fabricating composite metal wires such as aluminium clad steel wires is disclosd which comprises providing a core of hard metal with a cladding of soft metal by extrusion. In fabricating a composite metal wire by extrusion, a core is generally aligned, polished, cleaned or otherwise pretreated before entering an extruder so that a high and variable tension is imparted to the core. By avoiding such tension variation and maintaining the core under a constant low tension and by electrically heating the core before the core enters the extruder, a composite metal wire of improved quality is fabricated in a stable manner.

Abstract: A coating apparatus in which a coating film is transferred from a film carrying roll leaf, onto the surface of a product. A positioning platform, together with a pressure member which acts against the platform, define a transfer station at which the roll leaf and product are concurrently aligned. A continuously moving and guided thermal belt preheats the foil sufficiently to effect separation of the roll leaf decorative layer from the carrier, and assure its transfer to the product surface.

Abstract: An apparatus for applying a relatively thin uniform thickness layer of a fluent coating material to each of a plurality of conductors includes a housing having aligned entrance and exit openings. An applicator tube is mounted within the housing transverse of the paths of the conductors and includes a plurality of spaced applicator openings through which the conductors are advanced. The tube is arranged so that each applicator opening includes aligned notches in front and rear walls of the tube and a slot in the top of the tube, the slot connecting an aligned pair of notches. The fluent coating material is supplied to the tube and is maintained at a level substantially at the top of the tube so that as the conductors are advanced through the applicator openings they are immersed in the coating material.

Abstract: This invention relates to a device for coating paper with a resin in a pattern to increase the tear strength of the paper by using an applicator head, rotatable about a shaft through which the resin material is passed through nozzles on to the paper. The resin material is supplied at a constant rate and at a constant temperature and pressure to paper moving at a predetermined speed.

Abstract: Heat treating apparatus for continuous painted strip, comprising an elongated, convective heating oven through which painted strip is passed while jets of hot gas are directed against the top and bottom surfaces of the strip to dry and cure the paint film. The strip is suspended from tension bridles at opposite ends of the oven, and hangs in a relatively flat catenary curve therefrom. Spaced longitudinally within the oven is a plurality of pairs of headers which are arranged to follow the catenary curve of the strip, each of said pairs comprising an upper header located above the strip and a lower header located below the strip. Each of the headers has a plurality of jet nozzles directed toward the strip, and duct means is provided for supplying hot gas to the headers so that the nozzles send jets of hot gas impinging against the strip.

Abstract: Apparatus including a chamber within which are mounted spaced rollers and an elongated housing interposed between a pair of rollers for heating or cooling a web transported over the rollers. A suction device in fluid communication with the chamber establishes a pressure differential on opposite sides of the web for assisting in producing a predetermined angle of contact of the web with the rollers, and for drawing fluid from the housing along the surface of the web for heating or cooling the web.

Abstract: An apparatus for flamescarfing the surface of a workpiece includes a powder supply device having a powder container connected via a shut-off valve to a powder distributor which is connected via hoses with nozzles mounted on the flamescarfing burner.

Abstract: In the manufacture of hose, a tubular textile is passed through one or more coating liquids, such as rubber or synthetic resin. An expander means, having a plurality of panels disposed radially about a shaft element so as to form a generally annular surface, and adapted to be centrifugally or centripetally movable by means of a spring mechanism mounted on said shaft, is disposed seriatim with the coating baths and are located within the tubular textile whereby to expand the coated tube during passage through drier means. Annular doctor means are disposed in operative association with said expander means and externally of said coated tube.

Abstract: A method and apparatus for treating only one side of a strip of material utilizes a pressurized foil bearing. The strip passes around the foil bearing while contacting a bath of liquid material. By controlling the pressure of the pressurizing medium used within the foil bearing, the strip is supported on a film of the pressurizing medium and the liquid material is prevented from contacting the side of the strip adjacent the foil bearing while the other side of the strip is in contact with the liquid material. Preferably, the pressurizing medium is at about the same temperature as the liquid material. Furthermore, a non-oxidizing gas may be used as the pressurizing medium to protect the side of the strip adjacent the foil bearing from oxidizing.

Abstract: A device for moistening a blood serum bearing film before it is wetted with a buffer solution comprises a conveyor roller assembly including a first roller having its surface layer formed of sponge and partly maintained in immersion in a buffer solution and a second roller disposed above and in abutting relationship with the first roller, wetting means for passing a blood serum bearing film between the rollers to supply a buffer solution thereto from the surface layer, and a vapor ejection tube disposed adjacent to the both rollers for spraying a vapor to the film before it is wetted.

Abstract: Apparatus for drying a continuous advancing strand which apparatus includes a trough with a plurality of spaced grooves extending from openings at the bottom of the trough upwardly along the inside surfaces of the trough. Subatmospheric pressure is created beneath the openings for creating an airflow along the grooves and beneath the strand for drying the surface of the strand. Additionally, a cover with apertures is applied to the trough above the strand.

Abstract: The heat treatment of a continuous band or sheet of metal as the same travels through a plurality of stages in a protective atmosphere, between conveying rollers, by applying direct-current electricity to the rollers for inclusion of the travelling sheet in the circuit therebetween. The charged rollers in the initial stage are spaced more widely from one another than those in the later stage, to compensate for the lower resistivity of the metal in the former, so that the Joule effect or I.sup.2 R factor in the stages are substantially equalized. The protective atmosphere of oxidizing, reducing or inert gases which encompasses the sheet, is confined in chambers of galvanized iron sheeting and the like, the walls of which are in close proximity to the travelling sheet, so that lesser amounts of reacting gases are necessary.

Abstract: A solvent vapor collector is mounted on the upstream inlet end of an oven having a gas-circulating means and intended for curing a coating applied to a strip sheet metal at a coating station. The strip sheet metal may be hot and solvent vapors are evaporated at the coating station and from the strip as it passes from the coating station to the oven. Upper and lower plenums within a housing of the collector are supplied with oven gases or air from the gas-circulating means and such gases or air are discharged within the collector obliquely in a downstream direction against the strip passing through that collector to establish downstream gas flows along the top and under surfaces of the strip so as, in turn, to induct solvent vapors into the collector at the coating station.

Abstract: The velocity of a free falling coating composition stream emitted from a coating applicator is altered prior to reaching a web by streams of gas directed over air foils situated immediately adjacent said coating composition stream.

Abstract: A method for decontaminating and subsequently metallizing a filament comprises:Passing the filament through the inner tube of a first chamber for decontamination which comprises two concentric tubes having an annular space therebetween, the inner tube of which has a series of fine holes therein; wherein said inner tube is heated and said annular space contains an inert gas such that said gas flows through said holes in heated jet streams which impinge upon said filament, thereby heating and decontaminating said filament;Passing said heated and decontaminated filament into a second chamber for metallization also comprising two concentric tubes having an annular space therebetween, the inner tube of which has a series of fine holes therein; wherein said inner tube of said second chamber is heated and said annular space of said second chamber contains a gaseous, thermally decomposable metal compound such that said gaseous metal compound flows through said holes in heated jet streams and impinges upon said heated

Abstract: A control is provided for a wire coating line which includes means for driving wire along a path at controllable speed while coating it with plastic extruded at a controlled rate and temperature, and cooling means are located at a controllable distance from the coating means to solidify the plastic. The controllable factors affect both the capacitance and diameter of the wire produced. The control allows the line to be run in accord with stored digital values for the matters to be controlled. Closed loop control is provided because the relevant factors of line operation are measured, the analogue measurements converted to digital values and compared with the stored values to produce a control signal which has the effect of reducing the differences between a desired and measured line condition as represented by the digital values compared. Closed loop control is also provided for control of the line to produce desired capacitance or diameter values in the coated wire.

Abstract: Method and apparatus for the surface coating and impregnation of the interstices of a moving porous web, and particularly method and apparatus for the production of elastomer-coated, bias-cut woven fabrics during a tentering operation. The coating apparatus disclosed consists of means for applying a layer of coating material sequentially to the lower and upper surfaces of the moving web to substantially penetrate the coating into the interstices of the web, while smoothing the surfaces to provide a uniform and controlled coating of desired thickness on the fabric.

Abstract: In coating a support, such as a flexible web of synthetic organic polymer, with a coating composition comprising a film-forming material in an evaporable liquid vehicle, at least two of (1) the temperature of the atmosphere in the coating zone, (2) the temperature of the coating composition at the point where it is coated on the support, and (3) the temperature of the support at the point where the coating composition is applied thereto, are maintained at a temperature substantially equivalent to the equilibrium surface temperature of the coated layer within the coating zone. The equilibrium surface temperature is defined as the temperature assumed by the surface of a layer of the coating composition under steady state conditions of heat transfer following evaporative cooling of the layer in the coating zone. Such temperature control minimizes thermal gradients within the coated layer and significantly reduces the formation of mottle and similar coating defects.

Abstract: The invention relates to an apparatus for treating porous wrapping material for a smoking article, for example a cigarette filter. According to the invention, the porous material is provided, by coating with a film-forming substance, with an impervious region or regions positioned to coincide with a region or regions at which adhesive is to be applied, the said substance being dried or set before such adhesive is applied. Thus, a line or lines of the film-forming substance may be applied to the same face of the wrapping material as a line or lines of adhesive for sealing the wrap and/or anchoring filtering material thereto, namely to that face which will be on the inside of the wrap formed from the said material.

Abstract: Steel strip is continuously coated with molten metal by passing it through a plasma arc and projecting the molten metal thereon in an inert atmosphere, e.g. nitrogen. The projecting means reciprocates transversely of the strip. The strip is preheated prior to deposition and the surface of the coating is reheated for refusion of only the surface of the coating. An inert atmosphere is maintained in an enclosure surrounding the projecting apparatus, by directing inert gas against the coated strip in a direction opposite to the direction of movement of the strip.

Abstract: A cable core, the interstitial spaces within which are being filled with waterproofing compound in a semi-fluid state as it passes through a compound-applying or filling chamber into which the compound is introduced under pressure, is advanced through a wiping die in a constricted passageway and into another chamber into which similar compound is pumped. The compound in the second chamber is at a substantially lower temperature than the compound in the filling chamber and exerts pressure radially on the cable core being filled to form a sheath or coating of the lower temperature compound around the filled core to seal the first compound in the core. The core is thereafter passed through a sizing die into a cooling chamber which solidifies the compound in and around the core. The cable core is thus conditioned for the subsequent application of sheathing materials thereto, for example, core wrapping and/or armor sheathing.

Abstract: In a machine for coating wire with organic enamel, especially solventless enamel, an applicator (3) is placed at the top of a baking oven (5) and the wire (1, 7) passes downwardly through the applicator and oven. The applicator unit preferably forms part of the closure of the top end of the baking chamber. In an oven providing for a number of upward and downward passes of the wire, further applicators may be provided below the bottom of the oven to coat the upward passes.

Abstract: An apparatus for applying a stripe to the surface of a continuous strip of film material. The film is drawn from a roll of film wound on a supply reel and through a striping station where a striping material is applied to a predetermined zone on the upper surface of the film. Next, the film is drawn around a plurality of drying rollers which are positioned to form a generally rectangular, inwardly spiraling drying path. The film with the dried striping zone is collected on a take-up reel which is motor driven in co-operation with a drawing roller. The drawing roller draws the film from the supply roller, through the striping station and around the drying path.

Abstract: A novel method and apparatus is disclosed for the coating of glass filaments to be used in elastomer and resin reinforcement. The invention includes a strand separator for dividing filaments from a glass fiber forming operation into a plurality of strands. The separator is cooled with a fluid so that heat from the oven used to cure the coating applied to the glass filaments will not heat the separator to such a degree that the coating dries and cures on the separator.

Abstract: Apparatus for and method of producing glass strand including withdrawing spaced apart continuous glass filaments from streams of molten glass; advancing the filaments along converging paths to a gathering member, the advancing filaments moving air with them; applying a coating substance to the filaments; gathering the filaments into a strand; and removing any excess coating substance from the strand by diverting at least some of the moving air to flow generally transversely across the path of the advancing strand.

Abstract: Method and apparatus to heat fix a heat fusible xerographic powder image to a final support material in which the powder image is first transferred to a final support material and the image-bearing support material then brought into contact with a bath of hot liquid metal for a period of time sufficient to fix the image to the support material. The temperature of the bath is maintained at a temperature high enough to fuse the image but below that at which the support material is damaged. The liquid metal bath has floating on it a layer of molten non-metal to prevent oxidating of the metal and to precoat the support material on its entry into the bath to prevent particles of the liquid metal from embedding in the support material. The relative high density of the molten metal acts as a wringer to keep the plasticized coating very thin when drawn out of the bath.This is a division of application Ser. No. 500,411 , filed Aug. 26, 1974.

Abstract: Apparatus for applying a treatment medium to a continuously movable textile web and subsequently drying the web comprises a treatment housing wholly supported by and thermally insulated from a dryer housing so as to minimize greatly the space required for the successive treating and drying operations. The treating housing preferably contains means which are operable to enable the web selectively to be treated or not treated.