Abstract: A coating hood adapted to uniformly apply protective coatings to the exterior of hot glass containers is disclosed. The hood comprises a tunnel for allowing the containers to pass therethrough, and an adjustable top for accommodating containers of various sizes. At least two jet slots are located in each side wall, and at least two receiver slots in the opposite side wall are aligned therewith. The jet slots and the suction slots are interspersed opposite to each other in each side wall. The coating compound is introduced through at least one feedpoint, and blowers secured to the side walls furnish high velocity air containing the coating compound. Baffles are situated in the flow path of the high velocity air so that the jets issuing from the jet slots are well defined. Two or more closed recirculating loops are defined by the judicious selection of blowers, jet slots and receivers.

Abstract: A device is described for filtering zinc powder from an airstream which is exhausted from a galvanizing process. The device comprises an enclosed chamber to which the airstream is circulated for removal of zinc powder. The chamber has a horizontally disposed bottom surface in which there is a plurality of circular openings which are equally spaced about a vertical center axis and which lead to vertically disposed bag-type filters. An arm is coupled to a vertical drive shaft which is rotatable about the center axis. The arm is designed to move a circular cover from opening-to-opening to individually seal the openings from the chamber, so that the filters can be cleaned of zinc powder. The cover is freely mounted on the distal end of the arm such that the cover is supported on the bottom surface of the chamber as it moves in an arcuate pathway between the filter openings.

Abstract: A phosphor suspension is prepared by adding to an aqueous solution of a polyethylene oxide, a phosphor, a phosphate or a borate of an alkali metal and a phosphor bonding agent. After having passed through a filter, the phosphor suspension flows down on the inner surface of a glass bulb of a fluorescent lamp to form a phosphor layer on it. The coated bulb is heated to a temperature which is not higher than its softening temperature while it is transported along two opposite guide rails by two endless conveyors by having both end portions supported by associated guide tips on the conveyors projecting above the guide rails.

Abstract: An apparatus used in surface treatment and a method of surface treatment using said apparatus are provided in the present invention.

Abstract: An arrangement for processing ligno-cellulose containing particles for the manufacture of wood-product plates. These have layers of oriented chips, and a chipper comminutes raw material. The fine material and dust are separated by a sifting device, and the sifted chips are provided with binder material by a gluing device. The chipper produces more chips of as great a length as possible than are required for forming of at least one cover layer of a mat. Behind the chipper, there are provided a wet-chip bunker and a dryer. The sifter separates the chips, obtained after removal of the fine material and the dust, into two fractions. The chip composition of one of these fractions, during the processing time, constantly contains chips which are as long as possible and which are more than that required for forming the mat layer. The other fraction has shorter chips obtained during chipping, and both fractions are present each in at least one bunker.

Abstract: In an apparatus for coating fabric sheets with plastic stiffening strips and including a conveyor 15 for feeding sheets through the nip between a drive roller 16 and a printing cylinder 14, a flexible doctor blade 20 wipes unused plastic and fluff contaminant from the cylinder. The wiped material falls into a collecting trough 21 and is screw conveyed to a supply reservoir 24, from which it is filtered and pumped back to the printing cylinder feed reservoir 18 under the control of a level sensor 19 mounted therein.

Abstract: An electrically operated device such as a duplicating machine has a recptacle for accommodating a fluid for the chemical treatment of sheet material and like objects. The receptacle may be in the form of a dip tank designed for passing sheet material therethrough. This dip tank is connected via a supply conduit to a storage tank and the supply conduit includes a pump controlled by an automatic charging and metering unit for supplying fluid to the dip tank. A drain conduit leading to the storage tank is connected to the dip tank. This drain conduit includes a solenoid valve for stopping or allowing the flow of fluid through the drain conduit.

Abstract: An apparatus for coating vertically extending wires with paint in which the temperature of a paint bath is accurately maintained and temperature variations within the bath are largely eliminated so as to provide constant coating characteristics. Vertically extending coating chambers are provided having relatively small cross-sectional areas so that heat generated by an adjacent heating element is spread evenly throughout the paint bath. A coating die is disposed at the top of each chamber. A discharge element is provided near the coating die and a paint receiving pool is stationed to receive the paint discharged through the outlet. The paint pool is in fluid communication with the bottom portion of each of the chambers.

Abstract: A method and an apparatus for continuously hot-dip galvanizing a steel strip, which comprises:Using a hot-dip galvanizing tank divided into a reaction chamber and a plating chamber having a bottom wall downwardly inclining toward the bottom wall of said reaction chamber, by a vertical partition provided, at the lowermost end thereof, with a gap and, at the upper end portion thereof, with an aperture of which the opening can be adjusted, said reaction chamber and said plating chamber communicating with each other through said gap and said aperture; causing a hot-dip galvanizing bath containing aluminum in a prescribed amount, contained in said hot-dip galvanizing tank, to circulate by convection, under the effect of stirring by a stirring means provided in said reaction chamber, through said gap and said aperture, between said reaction chamber and said plating chamber; continuously introducing a steel strip into said hot-dip galvanizing bath in said plating chamber while continuing said stirring, to subject sa

Abstract: An apparatus for forming a cloud of magnetic toner particles has a rotatable magnet roller with a number of magnetic poles disposed within a non-magnetic cylindrical sleeve. Magnetic toner particles are supplied from a hopper onto the sleeve. A magnetic bar is disposed above the sleeve. The rotation of the magnet roller causes the sleeve to carry magnetic toner particles thereon. When the magnetic toner particles carried approach to the magnetic bar, those become in a cloudy state.

Abstract: A method of removing foreign materials from developers characterized by intermittently supplying a magnetic developer to the peripheral surface of a nonmagnetic sleeve provided with a rotatable magnet roller in its interior, while recovering, at a position a specified distance away from the location of supply of the developer along the sleeve peripheral surface, the forward end portion of a layer of the developer moving along the sleeve peripheral surface in a direction opposite to the direction of rotation of the magnetic roller to thereby remove foreign materials from the magnetic developer.

Abstract: Electrostatic powder coating installation includes an enclosure through which a movable filter belt extends. A suction device draws air and excess powder towards one face of the filter belt which has a predetermined permeability so as to collect the powder on one face thereof and to allow air to flow therethrough to an exhaust plenum. A second movable belt formed of a coarse, monofilament, screen material is disposed in registry with the other face of the filter belt to prevent contact between the filter belt and the exhaust plenum. A cleaning device removes the excess powder from the one face of the filter belt; which powder, through a separator, is collected in a supply container for reapplication to the workpiece.

Abstract: Electroless plating using alternate operative plating tanks of glass fiber reinforced urethane with polypropylene liners, and a third tank of cleaning fluid applied to the tank not being used.

Abstract: Apparatus for applying powdered coating materials to the outer periphery of objects, and particularly tubular objects, and which comprises a support frame structure for receiving the object therethrough and partially surrounding the object in spaced relation thereto, a supply chamber for receiving a supply of new powdered coating materials therein and in communication with fluidizer apparatus for directing the new powder thereto, gun batteries in communication with the fluidizer apparatus for directing the fluidized powder onto the outer periphery of the object simultaneously from opposite sides thereof, filtered chambers for collecting powder overspray and directing any accumulation of overspray into a reclaimed powder reservoir, said reclaimed powder reservoir being in communication with the fluidizer apparatus for adding the reclaimed powder thereto whereby reclaimed powder is directed to the outer periphery of the object.

Abstract: Apparatus for expelling gas bubbles from liquid adhesive which is conveyed through a conduit connecting an adhesive-containing vessel with a nozzle which applies adhesive to the running web of wrapping material in a tobacco or filter material processing machine. The conduit has a first section which contains a large-capacity pump and discharges adhesive into the enlarged portion of an annular channel defined by the cylinder and core of a gas evacuating device. The enlarged portion is followed by a second portion of smaller cross-sectional area which communicates with a radially inwardly extending gap of the core to admit some adhesive and the gases into a passage serving to return the gases and escaping adhesive to the vessel. A second section of the conduit contains a smaller-capacity pump and serves to feed degasified adhesive from the second portion of the channel to the nozzle.

Abstract: A method and apparatus for applying a coating composition onto a moving web especially a paper web, in which an excess of said coating composition is applied to said web. The web thereafter passes smoothing means to uniformly regulate the final thickness of the coating and simultaneously to remove the excess coating composition. This smoothing operation is performed under an adjustable partial vacuum. The removed excess coating composition is recirculated without being mixed with the coating composition within the application area and is mixed with fresh coating composition before reuse within the process.

Abstract: A strip is continuously passed through a molten salt bath in a main tank having a central longitudinal baffle providing passageways at each end thereof. A sink guide roll is provided for the strip at the exit half of the tank. A heating tank is located along one longitudinal side of the main tank at the entry end thereof and has front and rear connecting openings with the main tank. An agitator is positioned at the front end of the heating tank. A forward tank section located along the other side of the tank has a bottom opening connecting therewith. An intermediate tank section has upper and lower compartments, the upper compartment serving as a sludge settling basin. A rear tank section has an agitator therein and is connected to the forward tank section through the lower compartment. Small openings adjacent the top of the upper compartment open into the main tank and to the rear tank section.

Abstract: A method of and apparatus for the immersion treatment of discrete lengths of galvanized conduit to inhibit the formation of "white rust" on the conduit surfaces are disclosed. The conduit is continually conveyed successively through three treatment zones comprising a cleaning bath containing a cleaning agent which removes lubricating oils, greases, dirt and the like from the conduit interior and exterior surfaces, a rinse bath and a coating bath containing a coating agent including chromate ions and a polymeric coating composition. A rotary star wheel-type conveyor is arranged in each treatment zone for transporting the conduits in spaced, substantially parallel relation to each other about an arcuate path through each bath and for inclining the conduit above the bath for a time effective to drain excess liquid from the interior and exterior conduit surfaces. Effective draining of excess liquid prior to entry to another zone minimizes contamination of the various baths and yields a high quality product.

Abstract: A machine is presented which is specifically designed to accept a batch of mixed cut-up poultry parts, to coat the parts in a wet coating unit with a liquid mixture of water and egg or milk solids by tumbling them in a smaller volume of the liquid mixture, to transfer the parts with a short drip time by gravity to a dry coating unit, there to tumble them in a smaller weight of flour and coat them with the flour to an appearance equal to or better than hand coating, to continue tumbling them while excess dry material is removed from the tumbling volume and stored, to stop after a pre-set dry tumbling time and present the fully coated parts with a minimum of excess flour for hand removal, while properly cycling a sifting mechanism to entrap dough balls above a desired minimum size. Each successive batch may be liquid coated while the preceding batch is hand removed. The operator may determine the number of successive batches processed before changing the liquid mixture or removing the entrapped dough balls.

Abstract: An air filter system for filtering solid particles from air, characterized by a plurality of flexible filter tubes having walls permeable to air and impermeable to solid particles, and mechanical means for shaking the filter tubes to dislodge any deposited solid particles from the tubes which means comprises a vibrating structure.

Abstract: In an ink jet printer solid impurities contaminating recirculating ink are removed by subjecting contaminated ink to ultrasonic energy for forming an aerosol of the ink. The aerosol of ink is entrained in an air stream and carried to impactor means where the ink aerosol is caused to return to a liquid state.

Abstract: An apparatus and process are provided for the safe, economic and pollution-free exposure of articles to reactive gaseous fluids to alter their surface characteristics. The articles are exposed to one or more fluids which are transferred back and forth from a reaction chamber to a holding chamber. As the fluids are transferred they pass through a trap designed to remove reaction-by-products without affecting valuable reactant fluids. Since the fluids can be transferred under vacuum and the overall reaction can take place at relatively low temperatures, the process provides a convenient and safe method for handling reactive fluids. The process is particularly useful for the halogenation, for example fluorination, of a variety of articles, such as plastic containers, aerosol bottles and films to improve their barrier resistance to solvents and gases.

Abstract: A device for regenerating developing liquid used in an electrophotographic copying machine of the liquid development type comprises a container for developing liquid. The container includes therein inlet means for admitting used liquid into the container, means for subdividing condensed toner contained in the used liquid, means for filtering the admitting used liquid to pass the subdivided toner therethrough, and outlet means for directing the filtered liquid out of the container.

Abstract: An apparatus for controlling the iron content of a zinc phosphating process. The processing bath is continuously aerated and agitated to precipitate iron compounds out of solution and maintain the precipitate in suspension. The bath is constantly recirculated through a series of settling tanks or a single compartmentalized tank wherein the precipitate is settled out of solution and from which relatively clarified solution is discharged back to the processing bath. Periodically iron bearing sediment is removed from the settling tanks for disposal as solid waste.

Abstract: An improved ribbon re-inking apparatus having an improved means for holding and recirculating the re-inking composition comprising means for feeding and collecting the ribbon, means for driving the collecting means, inking means for applying re-inking composition to the ribbon, guide means for guiding the ribbon into contact with the inking means, and a supply means for providing a continuous supply of re-inking composition to be picked up and transfer to the ribbon, which supply means broadly comprises a closed reservoir means which holds a supply of re-inking composition, a relatively shallow open feed container which holds a pool of the composition to be picked up, a pump for continuously pumping the re-inking composition between the reservoir and the feed container, and a filter means for filtering the re-inking composition.

Abstract: Disclosed is a process for the manufacture of a series of photoconductor webs spaced apart from each other on a carrier web by electrically conductive spacing strips extending transversely of the carrier web, comprising (a) transporting a carrier web having an electrically conductive surface disposed thereon in a feed direction across a backing member and in close proximity to a slot die arranged transversely to the feed direction; (b) pumping a photoconductive coating solution into the slot die; (c) flowing the photoconductive solution intermittently from the slot die orifice onto the carrier web for periods of time sufficient to produce the spaced photoconductor webs, the flow of the coating solution being substantially uniform during each coating period and the entire quantity of coating solution required for each coating photoconductor web being extruded from the slot die orifice in the form of a substantially uniform stream; (d) maintaining the distance between the carrier web and the die orifice constan

Abstract: Apparatus and method for electrostatically depositing a layer of particulate material on a substrate surface from a gaseous suspension of particulate, thermoplastic material. Classifying means removes oversized particles from a supply of particulate, thermoplastic material and feeds properly-sized particulate material to a metering feed device. A pressure responsive sensing means is associated with the metering feed device, and energizes a control circuit associated with the classifying means to direct properly-sized particulate material from the classifying means into the metering feed device to maintain a substantially constant, predetermined amount of properly-sized particulate material in the metering feed device.

Abstract: An automatic developability control system is provided in the developer assembly of an electrostatic reproduction apparatus to sample toner particle developability. Upon an indication that replenishment of toner powder is necessitated, the control system is operative to activate a toner powder dispensing apparatus. The developer mixture may be comprised of magnetic toner particles or magnetic carrier particles to which toner powder is adhered. To prevent debris material such as paper scraps, fibers, dust, bits of rubber, etc. from plugging or jamming the toner powder sensing device of the control system, provision is made for separating the developer mixture from debris material prior to the introduction of developer mixture into the control system.

Abstract: An automatic breading machine for coating food stuffs with flour, or other dry coating materials which includes an elongate hopper mounted for rotation about its longitudinal axis and having agitator blades for thoroughly moving the food objects within the flour to completely coat the objects. The food objects are ejected from the hopper onto a screen which permits excess dry coating material to drop therethrough. The dry coating material supply normally moves out of the hopper through ports at one end of the hopper and through a screen sifter which separates dough balls from the flour to prevent the dough balls from returning to the system or from being delivered with the food stuffs. The flour passing out of the cylinder is collected in a hopper and conveyed to the intake chute of the hopper for reuse. A pair of flour collecting hoppers and a pair of conveyors are used so as to provide the automatic breading machine with selectivity of flour.

Abstract: A method and apparatus for electroless plating of a metal on a workpiece overcomes the problem of metal plating on solid particles suspended in the solution and on those parts of the plating apparatus in contact with the solution by maintaining a concentration of anticatalytic substance, such as lead ions, between about 10.sup.-.sup.6 and 10.sup..sup.-1 mols per liter and maintaining a relative speed of more than about 0.9 meter per second between the solution and those parts of the apparatus in contact with the solution.