Abstract: A method for the generation of a brush of developer powder at a magnet cylinder of a developing apparatus in a copying machine, for the development of a latent image, generated particularly electrostatically wherein developer powder is being thrown at least partly directly at the magnet cylinder in distribution over the length of this magnet cylinder and optionally passing this brush through a narrow gap. In the developing apparatus at least one scoop wheel or one or several pairs of scoop wheels rotating in an inclined plane and being partly immersed in a supply of developer powder serve to throw developer powder at the magnet cylinder for the generation of the brush of developer powder thereon. With the scoop wheel may be associated a worm conveyor and baffles.

Abstract: Charge images on a moving substrate such as a photoconductive belt surface are developed by being passed over two magnetic developing rollers in succession, which include nonmagnetizable cylinders rotatable in opposite directions about stationary magnet systems and are spaced apart outside each other's zone of influence in the upper region of a trough-shaped reservoir. The reservoir has oppositely sloped side walls converging to a bottom for holding a supply of developing powder, from which powder is supplied into a zone between the developing rollers for attraction to their surfaces by at least one magnetic transfer roller located between them and the bottom.

Abstract: The development apparatus of a developer impingement type comprises a developer distributor having a developer impingement outlet for injecting a liquid developer against the surface of a photoconductor member having a latent electrostatic image thereon, and a developer inlet for introducing the liquid developer into the developer distributor, and a coil shaped buffer member disposed between the developer injection outlet and the developer inlet, extending along the developer impingement outlet which covers an image area of the photoconductor member with a predetermined space from the surface of the photoconductor member.

Abstract: A process for forming a high viscosity coating composition from low viscosity polymeric colloidal dispersion by substantially effecting the thickening of the colloidal dispersion in a mixing head, and for producing from the mixing head a range of high viscosity coatings using the same low viscosity polymeric colloidal dispersion.

Abstract: An optical fiber or similar article is coated by directing the fiber through a spherical mixing vessel. Two silicone RTV components are directed by means of an annular feed mechanism into the mixing vessel at predetermined flow rates. The motion of the fiber directed through the vessel produces a churning or agitation of the silicone components to uniformly and homogeneously coat the fiber with the mixed components and provide a protective elastomeric coating about the fiber.

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: An apparatus is provided for coating workpiece members fed one at a time to a coating station whereat individual workpiece members are coated with a viscous coating medium supplied from a reservoir under constant hydrostatic pressure to ensure coating of said workpiece members with a predetermined amount of the viscous medium of such viscosity as to be suspended, without dropping, from the opening of tubes depending from a coating applicator at the coating station supplied with viscous medium from the reservoir at constant hydrostatic pressure. The workpiece members thus coated are moved along a track, preferably rolling about their axes, dried and collected.

Abstract: A toner dispenser including a substantially enclosed dispensing hopper arranged to support a quantity of finely divided particulate material. The hopper is provided with an opening therein through which the material is dispensed by gravity to a developer sump. A cylindrical dispensing roll is rotatably supported in the hopper in or adjacent the opening with the roll surface in biasing contact with the interior wall surface of the container to form a movable seal for retaining particulate material within the hopper. The roll is formed of a resilient foamed elastomeric material having a textured outer surface with a plurality of open-cell cavities adapted to receive and support toner particles. The dispensing roll is rotated sequentially through the material in the hopper to load the open-celled cavities and then past at least one of the biasing surfaces wherein the surface of the roll is deformed sufficiently to cause toner thereon to be dispensed from the roll surface into the developer chamber.

Abstract: A difficultly solderable metal of iron, nickel, copper or an alloy thereof having an oxide surface is soldered by dipping in a bath of a molten solder alloy consisting essentially of 15 to 98% by weight of Zn, 85 to 2% by weight of Sn, 0.01 to 0.5% by weight of Al and 0 to 5% by weight of Ag to which ultrasonic vibration is applied. The bath structure comprises a vessel, a tip element for imparting ultrasonic vibration and a block member for concentrating the ultrasonic vibration. Said element and member being fabricated of a metal selected from the group consisting of tantalum, niobium, molybdenum, tungsten and an alloy thereof having at least one of these metals as the main component.

Abstract: In a system for flocking a substrate, such as a garment, the improvement comprising a method, apparatus and article for adjustably controlling the moisture content of the flock in the flock tray to any desired moisture level, whereby the flocking machine is not limited to use only in a plant having a humidity controlled atmosphere.

Abstract: Bubbles are eliminated from a liquid such as a photographic emulsion by passing the emulsion through a horizontal tubular container while pulling a vacuum on the container and subjecting the emulsion to ultrasonic vibrations from an ultrasonic transducer having a horn located in a well in the bottom of the container. Emulsion is pumped out of the container and delivered through a conduit to the point of use. The delivery circuit can include a secondary gas separation chamber which also has a transducer horn therein. Provision is made for selectively recycling part or all of the emulsion back into the well. The container can be operated either partly full or completely full of liquid. Provision is also made for cleaning the internal walls of the apparatus by injecting a swirling stream of liquid into the tubular container to flow through the container and downstream portions of the system.

Abstract: Device for the uniform application of liquid treating baths in the form of foam onto textile flat materials, consisting essentially of (a) elements for foaming the liquor under pressure, by a pipe-line for the foam linked to (b) a foam distributing and foam applying chamber, and immediately below, but not directly limited therewith, (c) elements for supporting and transporting the textile web in open width of the material.

Abstract: To insure that fresh toner dispensed into a magnetic brush developing apparatus is thoroughly stirred and mixed with developer which has been stripped from a magnetic roll, the member used to strip the developer from the roll is disposed beneath the toner dispensing opening, and is formed from two inclined plates joined together by a spring to form a continuous inclined surface extending from the roll, the lower plate being connected to a vibration generator.

Abstract: An electrostatic photographic copying apparatus comprising a frame member having a transparent plate on which to place an original to be copied, a rotatable photosensitive drum having an electrostatic photographic material on its periphery, an optical system for projecting an image of the original onto the surface of the photographic material, an image-forming zone disposed exteriorly of, and alongside, the periphery of said photo-sensitive drum for forming on said sensitive material an electrostatic latent image corresponding to the image of the original or a developed image corresponding to the latent image, a transfer zone for transforming said image to a transfer paper, and a transfer paper forwarding system for feeding the transfer paper on which the image has been transferred to a discharge end through a desired treating zone.

Abstract: A magnetic brush developing apparatus having magnetic rollers with end sleeves formed of an insulating material. A trimming bar is provided having a concave portion below a leading edge thereof to facilitate the return to the sump zone of excess developing material. Magnets disposed within the rollers are mounted on channel members in a manner to direct the magnetic forces about each brush to ensure blanket coverage and a downstream configuration to direct developing material over a baffle associated with a cross-mixing baffle assembly. A screen is provided within the housing of the assembly to collect foreign objects. A mixing and transport device is positioned within the sump zone and is comprised of a plurality of spaced-apart augurs disposed on a shaft and a plurality of radially-extending bars affixed to the ends of the augurs.

Abstract: A magnetic brush developing unit for an electrophotographic reproducing apparatus, the brush element being a nonmagnetic sleeve rotating around fixed magnets, together with a first agitator providing both lateral and progressive mixing of depleted developer (with addition of toner, if necessary) as it leaves the magnetic brush via a scraper blade, a second agitator for additional mixing of the freshened developer and for conveying same to a roll with axial channels on its surface. The channels supply the freshened developer to the sleeve to form a new brush for another pass at a photoconductor having the same or another latent image on it. All adjacent rotating members turn in particular directions to assist circulation of developer and to enhance efficiency of agitation.

Abstract: A resonator dimensioned to be resonant along its longitudinal axis at a predetermined frequency of vibration includes a liquid retaining recess therein disposed at or near an antinodal region of longitudinal motion. An electroacoustic converter coupled to one end of the resonator renders the resonator resonant at its predetermined high frequency for activating a liquid, such as molten solder, disposed in the liquid retaining means to effect soldering a workpiece immersed in the liquid of the retaining means. Means move said resonator between a storage tank, whereat to charge said recess, and working position whereat to effect said workpiece treatment.

Abstract: Foamed wax is produced and sprayed onto automobiles following the washing thereof by automatic washing apparatus. Liquid wax is combined with a foaming agent, water and air to form a foamed wax which can be conveniently dispersed by conventional automatic car washing equipment, resulting in an improved shine and more complete drying of the surface.

Abstract: A blender for blending a mixture of flowable materials, such as the carrier and toner components of a developer for an electrostatic processor, comprises a rotatable chamber having radially angulated passageways extending through its periphery for guiding the materials into and out of the chamber. The passageways are open, but the mixture tends to at least temporally dwell in the chamber and is, therefore, subjected to a tumbling action, because the radial angulation of the passageways exceeds the angle of repose of the mixture. Continuous and discontinuous blenders embodying these principles are disclosed.

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: A blender for blending a mixture of flowable materials, such as the carrier and toner components of a developer for an electrostatic processor, comprises a rotatable chamber having radially angulated passageways extending through its periphery for guiding the materials into and out of the chamber and internal axially angulated plates for cross-mixing the materials. The passageways are open, but the mixture tends to at least temporally dwell in the chamber and is, therefore, subject to a tumbling action, because the radial angulation of the passageways exceeds the angle of repose of the mixture. The internal plates impart an axial component to the movement of the tumbling mixture to provide cross-mixing of the materials.

Abstract: Plywood is made by continuously propelling a liquid plywood glue in unfoamed condition at a predetermined flow rate, continuously foaming the glue as it is propelled, and continuously extruding or otherwise applying the foamed glue to the surface of a plurality of wood veneers. The flow rate of the unfoamed and foamed glue is maintained substantially the same on a unit weight of liquid glue per unit time basis. The veneers then are laid up into a plywood assembly and pressed into a plywood panel. The veneers may be preheated to expedite setting of the glue. The method is applicable generally to the application of a foamed liquid to a solid surface.

Abstract: Method and apparatus for agitating an acidic aqueous coating composition containing dispersed particles of an organic coating-forming material are disclosed. Movable vanes are disposed beneath the surface of a bath of the composition. The vanes have a relatively large surface area and are moved through the bath at low speed so that the shear stress imposed on the dispersed particles is minimized. This prolongs the stability of the composition.

Abstract: To provide simultaneous and efficient mixing and blending of the toner and carrier components of a multicomponent developer, there is a hybrid crossmixer comprising an auger-type active section and a pair of baffle-type passive sections. The crossmixer is used, for example, in a magnetic brush development system on the downstream side of the development zone. In that event, the partially denuded developer exiting from the development zone is split, with approximately half being routed to the active section and the other half being more or less equally divided between the two passive sections. Furthermore, the additional toner needed from time-to-time to maintain the toner concentration of the developer at a suitably high level enters the system via the active section of the crossmixer to ensure that it is rapidly blended in with the balance of the developer.

Abstract: An enclosure designed to maintain the purity and physical characteristics of a slurry within a preferred range during the manufacture of shell molds is disclosed. The tank is in the form of a trough with flat side walls and a curved member forming the front, bottom and back of the trough. The entire trough is water cooled and a cover along the top completes the enclosure. The enclosure is fitted with means for circulating the slurry and a liner having an airfoil member. Various sensing and control means are interconnected through a feedback system which continuously monitors and controls the conditions of the slurry.