Abstract: The draft forcing fan system in a vapor adsorber is used to extract spent powdered or granular adsorbent from the contacting column by blocking the normal air route intake and discharge ducts. Auxiliary fittings mounted on the intake and discharge ducting facilitate temporary duct connections with a conveniently sized vacuum receiving cannister. In this mode, the fan which forces draft through the adsorption unit operates as a vacuum sweeper. A manually manipulated sweeper wand connected to the vacuum cannister is used to draft the spent adsorbent charge from the contacting chamber into the cannister for removal, regeneration or disposal.

Abstract: Screen cleaning showers for a sludge dewatering rotary screen thickener are kept open and effective by periodically rotating a steel wire brush positioned coaxially within the cleaning shower manifold. Shower nozzles are set into the manifold to assure full mechanical wiping of a nozzle interior surface by the axially rotating brush bristles. Brush rotation is motor driven. An automatic controller periodically and simultaneously rotates the nozzle cleaning brush and opens a normally closed solenoid valve in the shower manifold drain line.

Abstract: The flow of waste water sludge flocculant to a dewatering system is regulated by a surface proximity sensor located downstream of the flocculant addition point. Depth, variability and continuity of a partially drained sludge mat are evaluated by a depth sensor signal processor/analyzer. Signal characteristics representative of an optimally flocculated sludge mat are referenced by the processor/analyzer to establish high and low control set-point values. A variable speed flocculant supply pump or flow control valve is adjusted in response to an operational signal from the depth sensor which exceeds the set-point range.

Abstract: A pipe junction for concentrically mixing fluid flow streams is fabricated entirely of stock dimension plate and pipe materials with a faired main stream flow around the disruption of the injection flow pipe penetration and with all assembly seams, welded or bonded, externally applied. A slot is cut into the main flow pipe to receive a close tolerance fit of a prefabricated fillet assembly with the injection flow pipe. A continuous seam around the main flow pipe slot perimeter seals the main flow channel interior and structurally reinforces the concentric position of injection flow pipe.

Abstract: Complete definition of a papermachine headbox slice opening requires the measurement of three interdependent dimensions including (1) the projection distance of the slice lip edge below the slice beam, (2) the projection distance of the slice apron edge beyond the plane of the slice lip edge and (3) the slice opening distance between the slice lip edge and the upper face plane of the slice apron. A single gauging tool is provided for measuring all three headbox slice dimensions.

Abstract: A wet laid watermark of uncoated paper is simulated by the use of a resin or resin-plasticizer mixture dissolved in a slow evaporating, high boiling solvent. A sufficient quantity of the low viscosity solution is printed onto an uncoated paper sheet of stationary grade by a standard flexographic press to penetrate the paper fiber and deposit a non-tacky solid having a refractive index which closely approximates that of cellulose. The resulting image of the print is visible to both faces of the paper sheet.

Abstract: A pipe junction for concentrically mixing fluid flow streams is fabricated entirely of stock dimension plate and pipe materials with a faired main stream flow around the disruption of the injection flow pipe penetration and with all assembly seams, welded or bonded, externally applied. A slot is cut into the main flow pipe to receive a close tolerance fit of a prefabricated fillet assembly with the injection flow pipe. A continuous seam around the main flow pipe slot perimeter seals the main flow channel interior and structurally reinforces the concentric position of injection flow pipe.

Abstract: An apparatus is provided to integrate the steps of (1) distributing test ink to form a film of uniform thickness over the surface of a transfer roll; (2) transferring the ink film in a controlled number of revolutions at a controlled nip pressure onto an applicator roll; and, (3) further transferring the ink film in a controlled time interval to the surface of a test specimen at a controlled print pressure for a controlled number of print impressions.

Abstract: A system for sensing a web break using web break detection instruments. Upon sensing a break a strategically located, full web width deflection cam bears against the machine web upstream of the detected break. Under the bias of the deflector, the web running route is pushed into a saw-toothed cutter blade. Saw-tooth points simultaneously penetrate the web along a line traversing the full web width. Such line of web penetration becomes an immediate line of full width web breakage but at a location along the machine length designed to accommodate the waste production (broke) until web continuity along the remainder of the machine length is restored.

Abstract: A viscometric thermometer is fabricated with two sensing capillaries connected serially in a common fluid flow circuit. The first capillary is immersed in a reference bath of known constant temperature. Pressure differential across the first capillary is measured and the fluid medium flow rate through the common circuit is determined. The second sensor is positioned in the unknown temperature environment and pressure differential across the second capillary is measured. This second capillary pressure differential is combined with the determined flow rate value to further determine the unknown temperature value.

Abstract: Apparatus for forming and fabricating single-faced paperboard, the lower corrugating roll is provided with numerous circumferential grooves which are partially evacuated beneath a traveling overlayment of paper web for the purpose of holding the web tightly against the corrugated roll profile. These grooves are evacuated by groove evacuation tubes connected with one or more vacuum manifolds. Such evacuation tubes have flared, tubular distal ends to match the slotted socket of respective tube holders. Each holder also includes a spring loaded mandrel to secure each tube in its respective socket in such a manner as to permit rapid removal and replacement of such tubes.

Abstract: This process is directed to the coloration of envelope and stationery grades of white paper stocks with a water based ink coating. Characteristics of the flexographic process include both press and ink specifications. Critical mechanical or material characteristics are associated with each of the fountain roll, the anilox roll, the plate roll and the impression roll of a flexographic printing system. Used in conjunction with the critical combination of press characteristics is a unique, water-based ink formulation for rapidly coloring an entire web side with a colored ink to simulate the appearance of a colored paper stock.

Abstract: This process is directed to the coloration of envelope and stationery grades of white paper stocks with a water based ink coating. Characteristics of the flexographic process include both press and ink specifications. Critical mechanical or material characteristics are associated with each of the fountain roll, the anilox roll, the plate roll and the impression roll of a flexographic printing system. Used in conjunction with the critical combination of press characteristics is a unique, water-based ink formulation for rapidly coloring an entire web side with a colored ink to simulate the appearance of a colored paper stock.

Abstract: In the fabrication of double-faced corrugated paperboard, the exposed flute tips of single-faced corrugated board are prepared with a coating of liquid adhesive to receive a second liner web. To press the flute tips uniformly against the adhesive film coated surface of a glue applicator roll, pressure is applied by a segmented air bearing wherein multiple air bearing shoe segments are resiliently secured to a common manifold air source.

Abstract: Papermachine felts and wires are cleaned and maintained by pressurized fluid jets or showers which are oscillated transversely across the felt running direction over a fixed oscillation stroke distance. Superimposed on the fixed stroke distance is a periodic shift of the stroke reference point so that successive oscillations are not terminated at the same point. The oscillation drive mechanism is enclosed within a low pressure, gas-tight housing serviced by a pressure regulated gas supply. A reversible A-C motor is used to drive the mechanism.

Abstract: An on-line instrument in rolling contact with a papermachine web determines the web's strength and elastic modulus properties by intermittently pulsed sonic waves transmitted through the traveling web mass between a full circle, piezoelectric transducer emitter and identical receiving transducers respectively displaced from the emitter along the MD and CD web axes. Transducer signals from the receivers are analyzed by cross-correlation function techniques relative to the original stimulation reference signal to isolate the desired data signal from integral noise.

Abstract: Narrow strips of trim waste from high speed paper web converting and winding operations are drawn into a vacuum disposal system by a receiver which draws the trim strip over a flat surface aligned substantially parallel-planar with the strip off-running course. Such flat surface is flushed with an attached boundary layer of high velocity air which follows a smooth curve of the flat surface into the duct wall enclosure.

Abstract: An overflow hatch for confining low pressure volumes of paper pulp bleaching chemicals is provided with a double O-ring seal arrangement that sustains the hatch seal integrity as the O-ring material deteriorates from reactive effect of the bleaching chemical. The hatch seal integrity resulting from an annular clearance space extending radially between a cylindrical plug surface and an internal bore of a coaming, where the radial dimension of said annular clearance space is substantially equal to the thickness of a second O-ring tube situated in a seating groove in said plug.

Abstract: A method and apparatus is taught for rapidly implementing a semiautomatic vacuum test of food cannisters prior to filling. Unit numbers of completely formed but unfilled cannisters are manually positioned on vacuum mandrels and the test sequence started. Progress of the sequence is controlled automatically and concluded by a digital value report of the unit seal quality. Test productivity is maximized by preparing a second unit number of cannisters for test, as the test sequence for a first unit number of cannisters progresses. Should a number of cannisters fail a test sequence, means are provided to test each cannister individually to determine the exact cause of failure.

Abstract: A bleach system for blending gaseous chlorine with a paper pulp slurry flow stream by mixing the chlorine with a larger quantity of steam prior to blending the chlorine/steam gas mixture with bleach washer filtrate which serves as carrier water for a multiplied number of gas bubbles entrained in the filtrate. As the cooler filtrate water extracts heat from the mixed gas bubble, the steam constituent condenses to collapse each bubble to a fraction of the original volume thereby providing a larger number of smaller chlorine bubbles than otherwise available from conventional phase mixing injectors.The mixed phase flow stream of chlorine and filtrate is thereafter blended with the pulp slurry flow stream by shear induced turbulence resulting from a greater injection velocity of the mixed phase stream into the center of the slower moving slurry stream.