Abstract: Apparatus for delivering metered amounts of varnish to the surface of a metal can, or the like. Varnish is delivered to a metering roll having recesses in its surface and a doctor blade to scrape off excessage. The varnish in the recesses of the metering roll is delivered to a varnishing roll in continuously metered amounts, and it is delivered by the varnishing roll to the surface of a can, or the like. Remaining varnish is removed from the varnishing roll by a second doctor blade so that substantially no varnish is present on the varnishing roll at the points of delivery of metered varnish to such varnishing roll.

Abstract: A pressure roller for applying pressure to a sheet-like material passing between the pressure roller and an application roller for applying a layer of liquid to the material, as in the development of diazotype copies, comprises a plurality of relatively short constituent rollers connected to one another by connecting means which permit radial displacement of the adjacent constituent rollers relative to each other and wherein each constituent roller is urged toward the application roller by at least one resilient spring-like element. The pressure roller thus enables contact between it and the application roller with an even pressure, without significant sagging along its length, while allowing uneven areas of the sheet-like material to pass therebetween without affecting the force exerted over the entire nip between the rollers. Improved development of diazotype copies can thus be obtained.

Abstract: Gum applicator having a primary roller whose lower periphery extends into the box for emersion in a body of gum and a secondary roller which contacts the primary roller at a point well about the point where it emerges from the body of gum and which has a reduced central portion of substantial length.

Abstract: There is disclosed a device for applying a liquid adhesive onto the surface of bottles moving in upright seriatim fashion on a horizontal moving conveyor at an adhesive applying station. The device includes a container for liquid adhesive and a pivoted frame supported over the container which supports a beveled feed wheel on an inclined shaft driven by its connection to an electric motor. The beveled feed wheel rotates partly submersed in the adhesive and engages a cylindrical applicator roller freely rotatable on a vertical axis at the applying station. The outer periphery of the roller is comprised of a porous, resilient layer, e.g. a spongy urethane layer which receives adhesive from the beveled facing of the feed wheel. The beveled facing of the latter is non-porous and smooth, e.g. a steel facing.

Abstract: An apparatus for applying a finish coating of a liquid epoxy containing metallic flakes to the cylindrical exterior surface of tubes such as drawn aluminum tubes. The apparatus includes a carousel which supports six tubes spaced around the periphery thereof with the carousel being rotated about a horizontal axis. A rotable rubber liquid coating applying roll is located below the carousel but offset from directly beneath the rotational axis of the carousel. The liquid epoxy coating is applied to the rubber roll above a metering roll. The carousel is rotated about its horizontal axis to move the tubes into and out of peripheral contact with the liquid coating applying roll, with each tube remaining in contact with the roll through an arc of appoximately 10.degree. of rotation of the carousel. A gear drive rotates each tube while in contact with the liquid coating applying roll in such a manner that the tubes and the liquid coating applying roll move in the same direction and at the same surface speed.

Abstract: A device for applying single component developer includes an electrically conductive fur brush which charges the toner triboelectrically and which serves as a donor roller to a touchdown applicator roller. Electrical metering means control the supply of toner to the applicator and to the image member to be developed to facilitate more uniform image development.

Abstract: My invention relates to the method and apparatus for printing stripe patterns on the outside surface of cylindrical objects such as glass tumblers with their axes vertical during the printing operation, the stripes being printed substantially circularly about the axis of the cylinder as the center. The cylinder being striped is supported at a printing station for free rotation about its vertical axis. A stripe printing head provided with a stripe printing roller and an ink applicator drum, both rotating about substantially vertical axes, is moved to bring the printing roller in tangential printing contact with the tumbler surface. The printing head includes an enclosed ink (or pigment) supply well adjacent a segment of the perimeter of the applicator drum and means for maintaining the supply well full from a supply reservoir.

Abstract: A profiled roller for pressing sheet material evenly against a roller that applies a film of liquid to the material, without collecting or forming a meniscus of the liquid in the absence of material to be moistened, comprises on a core a sleeve composed of many contiguous identical rings each provided with a peripheral series of protuberances that recur n times circumferentially thereof with each ring turned circumferentially relative to a contiguous ring at an angle thereto of less than 360.degree./n. The tops of the protuberances, each having a surface area of less than 0.5 mm.sup.2, define a cylindrical roller outline and are spaced apart by a distance of 1.5 to 4 mm, providing between them open spaces that will not retain the liquid by capillary action. The opposite sides of each ring are formed with complementary profiles disposed circumferentially apart at the said angle so that the rings may be readily assembled in the required angular disposition on the core.

Abstract: Labeling apparatus wherein a rotor rotatable about a vertical axis is provided with peripherally spaced suction pads for taking labels presented thereto in vertical positions, moving them by adhesive-applying rolls for application of adhesive thereto and then pressing them into engagement with the side surfaces of containers supported in vertical positions. The adhesive-applying rolls are supported in substantially vertical positions in tangential relation to the rotor and there are adjustably mounted doctor rolls supported in tangential engagement with the adhesive rolls. The surfaces of the adhesive-applying and doctor rolls have mutually interengaged ribs and grooves and adhesive is supplied to the upper ends of the doctor rolls in free flowing streams so as to flow downwardly over the lateral surfaces of the rolls to their lower ends. A tray at the lower ends provides for collecting the adhesive and returning it to a reservoir for reuse.

Abstract: A roller is rotatable so that its surface moves in a direction opposite to a photoconductive drum to remove excess liquid developer from the drum. Rolling contact bearings are mounted on opposite ends of a shaft supporting the roller and have a diameter which is slightly larger than that of the roller so that when the bearings are pressed against the drum a slight clearance is maintained between the surfaces of the drum and the roller. The bearings are sealed and filled with a lubricant which does not degrade the liquid developer if mixed therewith. A wiper contacts the roller to remove developer pricked up thereby from the drum. Wipers are further disposed in contact with the drum upstream of the bearings to remove developer from the drum in these areas prior to contact with the bearings.

Abstract: A contact fuser assembly for use in an electrostatic reproducing apparatus including an internally heated metal core cooperating with a resilient backup roll to form a nip through which substrates carrying toner images are moved with the toner images contacting the metal core. The fuser assembly is characterized by the provision of a sump of liquid release agent material which material is provided for coating the surface of the fuser roll structure. In order to apply the liquid release agent material to the surface of the fuser roll structure there is provided a cylindrical applicator member which is partially submersed in the release agent material. A ratchet wheel and pawl arrangement is provided for periodically indexing or moving the applicator member in response to disengagement of the backup roll from the fuser roll through pivoting of an arm supporting the backup roll.

Abstract: A coating material such as a high viscosity, low solvent content paint is applied to metal strip by means of a coater which comprises a soft-covered take-up roll which draws coating material from a reservoir and coacts with a hard metering roll (from which excess coating material is continuously removed by a doctor blade), to form a metered film on the surface of the take-up roll. The metered film is transferred to a small diameter hard transfer roll from which it is in turn transferred to a soft covered applicator roll, by which it is applied to the strip. At each line of contact between two rolls or between the applicator roll and the strip the mutually contacting surfaces travel in opposite directions (i.e., the rolls all rotate in the same sense). Preferably the peripheral speed of the applicator roll is greater than that of the transfer roll, which is greater than that of the take-up roll, but the strip speed is preferably lower than that of the applicator roll.

Abstract: Apparatus for uniformly applying toner-release lubricant to, and for cleaning, heated fusing rolls used in copying or reproduction machines. The apparatus comprises a lubricant-dispensing roll containing an internal supply of lubricant; an applicator roll for transferring lubricant from the dispenser roll to the fuser roll and for wiping the fuser roll; and a spreader roll for evenly distributing the lubricant on the applicator roll prior to the completion of transfer to the fuser roll. The dispenser roll is designed to (1) dispense lubricant uniformly and substantially continuously over approximately 270.degree. of each revolution, regardless of the oil level therein, and (2) preclude the dispensing of lubricant when not in use.

Abstract: Apparatus is provided for applying a thin film of liquid to a workpiece. Although the apparatus with be described as a convenient means for waxing skis, it will become apparent as the description proceeds that it has wider application. The apparatus includes a motor driven drum which is dipped in a pan containing the liquid to be applied to the workpiece, and which when rotated causes a coating of the liquid to adhere to the surface of the drum. A metering rod, which may be flat, round, or of any other appropriate shape, is supported on the surface of the drum in a position extending parallel to the axis of rotation of the drum. The metering rod has sufficient weight so that it does not turn with the drum but rests against a stationary support bracket which is mounted on the frame of the apparatus adjacent to the drum, and which also extends parallel to the axis of rotation of the drum. However, with a round metering rod, the metering would still be accomplished even if it rotated.

Abstract: Apparatus and method for applying extremely thin coatings of liquid materials entering the apparatus at a viscosity in the range of up to 10,000 centipoises absolute viscosity through a combination of factors involving the use of at least four rolls of desired physical characteristics and roll speeds to continuously extract a relatively thick film from a pool of the liquid, reduce it to an ultra thin coating free of discontinuities, and unite the thin coating with a web.

Abstract: An electrostatographic apparatus having a movable liquid development assembly to compensate for variance between the liquid developer applicator roll and the imaging surface in which the development assembly comprises a reservoir receptacle having a liquid developer applicator roll member movable into and out of contact with the surface of an imaging member, the receptacle having support means including a plurality of arms to suspend the development assembly from a fixed support.

Abstract: An apparatus which forms and transfers thin films of a viscous or freely flowable liquid has a housing which supports or includes a vessel for a supply of liquid, a fountain roll which is rotatable in the housing and a median portion of which extends transversely of an outlet of the vessel so that liquid which flows into the outlet forms a layer on the periphery of the median portion, and a cylindrical doctor having at one end a diametrically extending blade which defines with the periphery of the median portion of the fountain roll a narrow clearance through which a film of liquid passes toward a station where the film is transferred onto a ductor roll. The doctor is adjustable radially of the fountain roll and the latter is surrounded by two O-rings which prevent the liquid layer from spreading from the median portion to the end faces of the fountain roll. A further O-ring is mounted in the housing to sealingly engage and to prevent leakage of liquid along the periphery of the doctor.

Abstract: A device which is useful in development of diazotype paper said device comprising a liquid application roller, a dosing roller cooperating with it and one or more pressing organs to bring the diazotype material into contact with the application roller. In order to reduce liquid transport via the extremities of the rollers toward the pressing organs, the dosing roller is provided with limiting elements which are installed at the exhaust side of the dosing roller near the nip between this roller and the application roller and each limiting element consists of at least five plates, installed perpendicularly on the shaft of the dosing roller of which plates one side is closely adjacent to the cylinder surface of the dosing roller. The limiting elements transport superfluous liquid from said nip between the rollers toward the liquid reservoir and thus they inhibit the liquid transport toward the pressing organs which would wet the rear side of the diazotype material.

Abstract: A device for depositing an adhesive substance at one or more predetermined points on wrapping material comprises rotating transfer or applicator disks with irregular profiles including areas destined for transferring the adhesive substance from a tank directly to a corresponding number of predetermined points on the wrapping material. A pair of wiper disks wipe adhesive substance from the two sides of each transfer disk ahead of the position where the adhesive substance is deposited. A dosing collar is interposed between every two wiper disks for dosing and rendering uniform in thickness the adhesive substance on the areas destined to transfer the adhesive substance. The wiper disks and dosing collars are given, in the interaction area with the transfer disks, a movement in a direction opposite to that of the transfer disks.

Abstract: An apparatus for reinking ribbons, including computer ribbons, comprising means for feeding the ribbon to be inked; means for collecting the reinked ribbon; drive means; guide means; inking means for applying a reinking composition to the ribbon so that it can be reused to print, including a reinking composition supply reservoir, a feed or ductor roller and an inking roller, wherein the positional relationship between the feed and inking roller determines the amount of reinking composition transferred from the reservoir to the ribbon; and cam means for adjusting the positional relationship between the feed and inking rollers.

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: An apparatus for the application of a controlled quantity of finely divided particulate material on a tacky surface, without imparting any shearing force, having a porous, rotating, laterally movable, cylindrical cartridge for storing and dispensing said particulate material which performs a sieving operation to break up particle aggregates prior to dispensing said particulate material, a roller for transferring said particulate material from the dispensing cartridge to the tacky surface as the roller moves over said surface and, a housing for said elements.

Abstract: Web coating apparatus wherein a liquid coating material is pressure fed upwardly into the nip of rolls rotating in opposite directions through the nip by structure which prevents contact of the coating material with the atmosphere, enables desired temperature control, and enables vacuum degasing of coating material prior to being pressured into a region adjacent to nip. This coating apparatus is particularly suitable for applying molten resinous compositions to webs.

Abstract: An apparatus for reproducing a selected image by electrostatically attracting development fluid toward a receiving medium is disclosed. The apparatus includes a patterned gravure roll having a plurality of pockets movable into facing relationship with the receiving medium, the pockets being adapted to carry discrete quantities of development fluid characterized by a meniscus. The gravure roll further includes means defined by each of the pockets, defining a constant point of maximum meniscus reach, and lands for spacing each of the constant points a predetermined distance from the receiving medium when corresponding pockets are moved into facing relationship with the receiving medium.

Abstract: A dispensing tray for a glue machine is described which includes a glue reservoir in fluid flow communication, through an elongate narrow slot, to an open trough which at least partially receives a pickup roller of the glue machine in the operative position thereof. Glue within the reservoir is gradually dispensed through the opening or slot to replace glue which is removed by the pickup roller. The tray is pivotally mounted on the machine to permit movement of the tray from a substantially horizontal position wherein the reservoir and trough are substantially the same levels and a substantially vertical position wherein the reservoir is disposed below the trough for permitting flow of glue from the trough back into the reservoir through the elongate opening. Means are provided for maintaining the tray in the operative position during use of the glue machine and for releasing the same to the filling or storage position subsequent to termination of use of the machine.

Abstract: Apparatus for carbonizing a tissue paper web has an improved inking section which permits tissue to be coated, with or without uncoated striped areas, at speeds up to about 3,000 feet per minute. A first doctor blade positioned upstream of a second doctor blade and an equalizer rod contacts the paper very lightly so as to remove some of the excess thickness of ink on the paper, thus reducing the amount of ink to be removed by the second doctor blade and the equalizer rod. The equalizer rod is made of hardened wire of a very small diameter, preferably about 0.047 inches, and is supported under tension in a shallow v-groove by a pair of chucks which are rotated together.

Abstract: A method and apparatus for vacuum dehydrating heat sensitive liquid material, particularly fruit juices including citrus and tomato juices. A top loading, endless belt conveyor for the thin liquid film is disposed in a vacuum dehydrator chamber which is maintained at about 2 mm. Hg. The belt travels through a cooling zone and a heating zone to attain substantially complete dehydration of the thin film. The liquid material is continuously applied to the upper side of the belt in the cooling zone by means of an applicator system comprising a grooved metering roll and a counter-rotating applicator roll which continuously deposits a uniform film of about 0.005 to 0.05 inches thickness on the endless belt. Dry product at about 0.5-2.5% moisture is removed from the belt in the cooling zone by means of a doctor blade which scrapes the product from the endless belt just prior to the portion of the cooling zone where the applicator system feeds additional liquid material onto the belt.

Abstract: A simplified press mounted, web-driven paper tinting unit especially useful for high speed presses and having low pressure, substantially clog-free, infinitely manually adjustable tinting fluid dispensing heads positioned proximal to underlying, freely rotatable tinting fluid-receiving rolls forming a part of the unit. The heads are preferably rotatable members having radially offset fluid delivery tubes and selectively movable betwen positions where all of the fluid from the latter directly impinges on the receiving rolls, to positions where at least a part of such fluid flows past the rolls for cyclic re-collection and reuse. In this manner, delivery of the tinting fluid to the web can be easily varied during tinting operations as desired without the need of flow-restricting metering valves or the like which are prone to clogging.

Abstract: A device comprising an offset preventing liquid supply roller of a novel construction which is capable of supplying a suitable amount of offset preventing liquid in one operation to a fixing roller of an electrophotographic copying apparatus and remaining in sevice over a prolonged time by merely being maintained in contact with the fixing roller with a low force. The supply roller comprises a reservoir disposed in its central portion for containing therein a substantial amount of offset preventing liquid, and a liquid permeable material layer disposed outwardly of the reservoir and capable of being permeated with the offset preventing liquid for supplying to the fixing roller the offset preventing liquid which oozes therethrough.

Abstract: A liquid applicator is provided adapted to apply a uniform liquid film to a surface regardless of the spatial orientation of the liquid applicator.

Abstract: In coating apparatus of the kind in which a roll dips into a bath of liquid coating material and applies the material to a transfer roll which in turn transfers the material to an applicator arranged to apply the material to a web passing between the applicator roll and a backing roll the applicator roll is independently rotated in the same direction as the transfer roll and the backing roll is rotated in the same direction as the applicator roll.

Abstract: Coating apparatus for applying a coating liquid to a moving roll. The apparatus has a trough-like pan, longer than the width of the roll surface to be coated, for holding a supply of the coating liquid. A pair of weirs is mounted on the pan which holds the coating liquid partially impounded therebetween. The weirs are spaced closer than the ends of the roll and the width of the roll surface to be coated. The weirs each are formed with a curved concave central portion having a radius the same or slightly larger than the radius of the roll, and with at least one overflow end portion to serve as a spillway. Coating liquid is supplied continuously to the central portion of the pan between the weirs and is drained continuously from the weir overflow end portions. The level of the coating liquid between the weirs is maintained at a higher level than coating liquid outside the weirs.

Abstract: Sheet coating means for a printing press including a back-up cylinder and form cylinder having an associated fountain, the fountain having a fountain roller rotating adjacent the form cylinder. Also rotating adjacent the form cylinder is a first form roller which is coupled to the fountain roller via a dosing roller. The fountain and its associated rollers are mounted upon a subframe having provision for (a) shifting the fountain roller into liquid transmitting contact with the form cylinder and (b) shifting the first form roller into liquid transmitting contact with the form cylinder thereby, selectively, to change the length of the liquid transference path from the fountain to a sheet carried by the back-up cylinder in accordance with the drying speed of the coating material.