Abstract: Apparatus for joining at least two axially abutting rods of the cigarette industry comprises means for delivering the rods to a rolling drum, a rolling device mounted adjacent to the drum to roll the rods with respect to the drum, and means for applying a hot-melt adhesive to the rods to produce a bonding film which overlaps the adjacent ends of the rods and extends at least around a major part of the circumference of the rods.The adhesive may be applied by a nozzle directly to the rods, or may be applied initially to the drum as a film which is then picked up by the rods.

Abstract: Heat activated, fabric conditioning products are made by impregnating a thick, absorbent substrate with fabric-conditioner chemicals. Such products are designed for use at elevated temperatures encountered in laundry dryers. This disclosure provides an improved process for making such products and an apparatus for applying liquids to the substrate. Previously a doctor blade was used in combination with a roller to limit the volume of liquid being applied to the substrate during compression of the substrate in a nip. The present disclosure concerns a thin wire drawn under tension which can function as the doctor to obtain a smooth thin film of liquid on the lower roller of the nip used for applying the liquid to the substrate.

Abstract: A developing and fusing apparatus for applying a single component magnetically responsive dry particulate toner powder to a latent electrostatic image on electrostatic copy paper and fusing the thusly applied toner powder onto the surface of the copy paper with the developing section of the apparatus having a permanent magnet applicator roll assembly which moves the toner powder about the periphery thereof into the vicinity of the copy paper to transfer the toner powder onto the copy paper with the amount of toner powder passing around the applicator roll assembly being controlled by doctor blades, and a cartridge which dispenses the toner powder onto the applicator roll assembly for passage around the applicator roll assembly.

Abstract: A method and apparatus for coating wherein the horizontal flow of coating liquid is restricted adjacent the ends of the coating roll to overcome foaming by high flow rates of liquid flow while avoiding fouling of the roll journals.

Abstract: A support member has a trough formed therein at one end thereof extending from the top and from side to side and containing liquid adhesive. First and second rollers are rotatably mounted in the machine in closely spaced adjacent parallel relation with their axes disposed in a plane perpendicular to the top and bottom of the support member. The first roller is partially immersed in liquid adhesive in the trough. The second roller is positioned above the first. Each of the rollers has a cylindrical surface having a plurality of circular notches formed therein in next-adjacent equidistantly spaced relation. Each of the notches has a V-shaped cross-section whereby the surface of each roller is a sawtooth. A rotating device is affixed to one of the rollers for rotating it thereby rotating the other roller in the opposite direction and moving a sheet of material between the rollers in a direction parallel to the top of the support member.

Abstract: An apparatus in which a fluid release material is applied to a fuser member. The fuser member is in communication with a backup member and a sheet of support material having particles thereon passing therebetween. A sealing arrangement prevents sidewise leakage of the release material along the longitudinal axis of the fuser member.

Abstract: A novel inking method and apparatus particularly well suited for the re-inking of used fabric ribbons such as of the chain-printer type. The apparatus preferably contains means for moving a fabric ribbon through an inking station onto a take-up roll, means in advance of the inking station for adjusting the edge-alignment of the ribbon, embossed or gravure inking means for supplying ink directly to the ribbon without compression of the ribbon, illumination means to facilitate the inspection of the ribbon for flaws and for uniformity of ink, and shut-off means for stopping the movement of the ribbon at any desired position.

Abstract: A water fountain control wiper unit of resilient material having a tubular portion on one edge that is slit for fitting over the edge of the fountain tray. The wiper has sufficient width so that a relatively flat surface tangentially adjacent the water fountain roller is biased against the water fountain roller to remove water upon rotation of the water fountain roller. The wiper unit has a length substantially shorter than the length of the water fountain roller so that one or more of the wiper units can be positioned along the length of the fountain roller to provide selective water removal, and the connector on the wiper blade unit allows the wiper blade to be quickly and easily mounted on or removed from the connected position on the edge of the water fountain tray.

Abstract: Method, materials, and apparatus for development of electrostatographic latent images employing out-of-contact liquid development are given whereby the development threshold is maintained within a range of about 60 volts at operating temperatures from about 10.degree. to about 40.degree. C.

Abstract: A contact fuser assembly for use in an electrostatic reproducing apparatus including an internally heated fuser roll structure comprising a rigid or non-deformable, thermally conductive core capable of interacting with a material applied thereto in such a manner as to form a thermally-stable interfacial coating intermediate the surface of the core and a release coating also formed thereon. The interfacial coating strongly adheres to the core surface and prevents toner material from contacting the outer surface of the core. The combined coatings have a sub-micron thickness and therefore present a minimal thermal barrier to the energy being conducted outwardly by the core. The interfacial coating is provided by a thermally degradable substance with polyethylene and the release coating comprises a low viscosity silicone oil.

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: A temperature compensated doctor blade system is disclosed for controlling the amount of liquid on a substrate. Variation in temperature is found to cause wide variation in liquid viscosity which affects doctor blade pressure requirements. An expandable chamber containing a temperature responsive fluid is used to control the pressure applied to a flexible doctor blade.

Abstract: This disclosure is directed to apparatus for periodically purging contaminants from a coating liquid during a coating operation and, more particularly, for cleaning a doctor blade of an adhesive coater, the apparatus including a container having an open bottom defining with a surface of a rotatable transfer roll and a doctor blade a gap of a predetermined size which doctors the coating liquid or adhesive to a desired thickness prior to the application thereof to an article which is to be coated, and means for periodically increasing the predetermined size of the gap and returning the increased gap size to the predetermined size whereby particles otherwise incapable of passing through the gap when of the predetermined size will pass through the gap when of the increased size to thus maintain a relatively clean bath of liquid throughout a coating operation.

Abstract: An apparatus controls the pressure of a doctoring means against an applicator surface to compensate for charges in the ambient temperature. The apparatus comprises a set of jaws which bring the doctoring means to pressure contact with the applicator surface upon closing and a means for limiting the closing of the jaws at lower temperatures to provide doctoring under reduced pressure at lower temperatures.

Abstract: Bookbinding apparatus for applying glue to the backbone edge of collated book sheets conveyed through a gluing station comprises counter rotating applicator rolls for transporting glue from a rectangular glue pot to the backbone the rolls substantially completely spanning the parallel sidewalls of the glue pot so that glue can not flow between the ends of the rolls and the side walls. Doctor blades extend from the ends of the glue pot to respective rolls so as to confine the adhesive below the rolls. One of the doctor blades is linearly retractable from its roll to an extent limited by a linearly adjustable stop which meters a volume of glue carried to the book in direct linear relation to the adjustment of the doctor blade stop.

Abstract: Disclosed is an improved method for the inking of an inking roller in conventional printing techniques. The method involves applying an ink film to the inking roller which is everywhere thicker than the desired thickness and applying a doctor blade, mounted at a reverse angle, to the ink to split it and apply it to the roller in the desired thickness when relative motion is provided between the roller and the doctor blade.

Abstract: A machine for trimming edges from a sheet of copy and for applying adhesive to a back face of the sheet. The sheet crosses an entry table and is guided to a backup roll. Spaced knives trim edges of the sheet as the sheet passes over the backup roll. The trimmed sheet is received by a guide which directs the sheet to an adhesive applying roll. A metering blade controls the amount of adhesive on the adhesive applying roll. The guide rests on the backup roll and on the metering blade, and the metering blade directs the sheet to the adhesive applying roll so that the trimmed sheet receives adhesive on a back face thereof.

Abstract: An improved oil metering blade holding device for maintaining a uniform film of oil on the surface of a fuser roll of a heated pressure fusing apparatus for fusing toner images on copy sheets. An elastic blade member is received in a U-shaped holding member which is undercut to accommodate misalignment between the blade member and fuser roll surface under load conditions.

Abstract: An improved oil metering blade assembly for maintaining a uniform film of oil on the surface of a fuser roll of a heated pressure fusing apparatus for fusing toner images. The assembly is mounted in such a manner as to be easily releasable from the frame for cleaning and/or replacement of the metering blade.

Abstract: A coating applicator system comprising a stationary coater blade, reciprocating valve and applicator plates and, interposed between the valve and applicator plates, a stationary metering plate which includes a metering cavity. In operation, a quantity of photoelectrophoretic imaging suspension is supplied to the metering cavity in the metering plate when the valve and applicator plates are cammed in. When the reciprocating plates are cammed out, a metered amount of the suspension is deposited on the coater blade and when the plates are cammed in the imaging suspension is caused to move into a coating gap to supply a uniform quantity of suspension to a surface to be coated.

Abstract: An improved oil metering blade device for maintaining a uniform film of oil on the surface of a fuser roll of a heated pressure fusing apparatus for fusing toner images. The blade member is made from any suitable elastic material such as rubber with durometer between 57 and 67 and has a rectangular cross-section. In vicinity where it contacts the fuser roll surface the blade with a radially curved surface of between about 5 to about 20 mils.

Abstract: A reciprocal action apparatus for adhesively binding together pages to form a book is described. The apparatus contains two basic components; a stationary support member and a movable carriage member. The stationary support member contains carriage drive means, a clutch assembly for engaging and disengaging the carriage drive means, a cover mounting assembly, an adhesive applicator and reservoir assembly and an elongated carriage bar member. The movable carriage member which includes a clamping assembly for holding together the pages being bound travels in a reciprocating manner along the elongated carriage bar member. In operation, the movable carriage member transports the pages being bound to a first station where they are tangentially contacted by a rotating adhesive applicator. In association with the rotating adhesive applicator are scraper blades and "doctor" blade.

Abstract: The mechanism of this invention deals with a series of gears for sequentially moving and controlling a pair of blade-like members associated with a liquid applicator roller, one of said blades serving to wipe excess liquid from the surface of the roller, and the other blade serving to press a sheet of paper against the applicator roller in order to transfer the metered amount or controlled amount of liquid from the roller surface to the paper. The gear train includes a manually movable gear for rendering operative a sequence control gear for bringing the blades into contact and out of contact with the surface of the roller, which sequence control gear has associated with it various linkage members and latching members for holding the blades in position against the surface of the roller and for triggering the drive motor for rotating the liquid applicator roller.

Abstract: A device including an applicator wheel for applying molten adhesive to a substrate as the substrate is moved over the surface of the wheel. The device includes a reservoir within which the wheel is partially submerged in molten adhesive and a doctor blade for controlling the thickness of adhesive applied to the substrate. The reservoir is so configurated that so long as the wheel is rotating, there is a continuous flow of molten adhesive from the pool beneath the wheel up to the doctor blade, along the underside of the doctor blade and back to the pool via channels in the end plates of a reservoir. To prevent the substrate from adhering to the surface of the wheel, stripper fingers extend parallel to the path of movement of the substrate and ride within annular channels or grooves in the periphery of the wheel.

Abstract: A pressure finger for doctor blade assemblies is reduced in bulk and weight and deflection of a jaw of the finger which is attached to a pressure plate is avoided by the provision of at least one upstanding elongated, symmetrically arranged stiffening flange.

Abstract: Apparatus for applying liquid coating or sizing material to fibers where the body of the applicator has a passageway with an elongated outlet and an exterior groove adjacent the outlet. A rotatable applicator roll, for supplying the sizing to glass fibers, is positioned in the exterior groove of the body so that a portion of the roll projects beyond the open end of the groove adjacent to the outlet. There is a means for rotating the applicator roll in a direction such that the circumferential surface of the roll moves away from the groove at the outlet. There is also a means for supplying liquid coating or sizing under pressure to the passageway of the body. The sizing then is discharged through the outlet onto the circumferential surface of the applicator roll as the surface moves away from the groove during rotation.

Abstract: A magnetic brush developing apparatus as disclosed 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 and having a flat surface forming a converging passageway with a said roller whereby to compress developing material transported on said roller. 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: Apparatus for developing exposed diazotype sheet material in which an accurately metered amount of liquid developer is applied to the sheet material by an applicator roller. The roller surface is essentially smooth and liquid developer is applied to the roller surface in an amount metered by a metering blade assembly which includes a flexible support member carrying a resilient backing layer which, in turn, carries a fine mesh screen held in contact with the smooth surface of the roller. A sheet of smooth, essentially continuous material is interposed between the screen and the roller surface when the apparatus is not in use and is retracted to enable direct contact between the screen and the roller surface when the apparatus is in use.

Abstract: An apparatus in which the quantity of release material metered to a heated fuser member is regulated. The apparatus includes a blade positioned in contact with the fuser member to remove excessive release material therefrom.

Abstract: Method and apparatus for evenly coating a moving web of material with a predetermined amount of a liquid and characterized by simplicity of design, uniformity of application of the liquid and accurate control of the amount of the liquid applied, as follows. Mechanisms are provided for supplying and feeding a web of material in a longitudinal path of travel at a predetermined speed. A coating roll is positioned for transverse rotating contact with one surface of the traveling web of material and includes a covering of soft, uniformly and highly absorbent material for receiving and uniformly absorbing the coating liquid and for transferring and uniformly coating the traveling web with the liquid. An open top pan is provided for continuously receiving the coating liquid therein. The coating roll rotates within the pan for contacting and continuously absorbing all of the coating liquid within the pan above the level of the coating roll.