Abstract: The washing efficiency of removal of cooking and bleaching chemicals from cellulose paper pulp on horizontal belt washing filters is improved by disrupting the filter mat adjacent the belt intermediately of soft, displacement wash liquor applications to the filter mat topside. The objective may be achieved by directing a line of low volume, high pressure jets of filtrate or wash liquor against the belt underside. Alternatively, sonicly vibrated foils extended transversely of and adjacent to the belt are effective to disrupt the filler mat pursuant to the invention objective.

Abstract: The present printing process provides a unique color tone print of muted contrast in two, sequentially operated, flexographic print stations. A suitable paper substrate base for the process is uncoated white paper of stationery or envelope grade. As the paper supply web is drawn through the first print station, the desired image or design is printed on the paper with a colorless solution of a polyol, such as glycerine, in a glycol ether solvent. The second print station simply lays a uniform color coating of compatible pigment or solvent dye based ink over the entire web surface. Shade or tone differences resulting from differences in ink absorption with respect to the glycerine solution image areas provide a distinctive printed product.

Abstract: Quickly exchangeable inserts for sheet feeding vacuum cups are provided to accommodate an extended range of sheet permeability. Projecting form structure inserted within a feed cup bellows provides a surface discontinuity for the vacuum nozzle to retard and inhibit double sheet feeding of either highly permeable or highly impermeable paper. Single sheet feed reliability is thereby improved.

Abstract: A fully automatic test system is provided to nondestructively determine the elastic constant information of paper samples. Two ultrasonic wave sensors are mounted in alignment with the instrument frame at respective distances from an ultrasonic generator. A motor driven turntable beneath the sensors and generator supports a paper test specimen for automatic progression of the specimen fiber orientation relative to the sonic wave propogational direction. Electronic data processing equipment resolve ultrasonic emission and reception signals for quantitative determination of the sonic velocity through four directional transmission modes of a specimen. Such sonic velocity data enables determination of four in-plane elastic parameters.

Abstract: Large, paper mill reels of product are protectively wrapped for shipment by capping the reel ends with a header sheet of larger area than that reel end face circle to pleat a flange portion of the header sheet onto the cylindrical surface of reel with a resilient planar element having a freely suspended, circumferentially expansible aperture drawn coaxially over the header sheet and reel to wipe the header sheet flange onto the reel cylindrical surface.

Abstract: Single sheet feed reliability for suction cup mechanisms handling highly permeable paper sheet is improved with a quickly and conveniently attached rigid cup enclosure of an extensible bellows cup. An internal thread is provided in the suction pipe ends for receipt of an externally threaded T-nut shank. The T-nut secures both, the rigid cup enclosure and the extensible bellows.

Abstract: A method and apparatus is provided for measuring the present and ongoing performance of paper pulp brown stock washers. Black liquor carryover within a washer mat past wash liquor application showers is quantified by determination of and correlation with the mat liquor specific conductivity.

Abstract: As a preparatory step to rigid substrate application, indefinite length strips of wood veneer are tenderized by cross-grain stressing through a roll nip wherein the surface of a steel roll is corrugated with circumferentially extending flutes bearing against the veneer strip and backed by a medium hard rubber roll. Such treatment fractures the natural, transverse or cross-grain fiber in the veneer along longitudinal strip increments of the veneer surface.

Abstract: The washing efficiency of removal of cooking and bleaching chemicals from cellulose paper pulp on horizontal belt washing filters is improved by disrupting the filter mat adjacent the belt intermediately of soft, displacement wash liquor applications to the filter mat topside. The objective may be achieved by directing a line of low volume, high pressure jets of filtrate or wash liquor against the belt underside. Alternatively, sonicly vibrated foils extended transversely of and adjacent to the belt are effective to disrupt the filler mat pursuant to the invention objective.

Abstract: Gaseous chlorine is blended with a paper pulp slurry flow stream for pulp bleaching 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.

Abstract: A portable earth anchor and foundation pier is provided by a reinforced concrete casting around a steel skeleton comprising wheel axles, draw bar and earth penetrating tines. One embodiment of the invention has ground clearance from a bottom surface for wheel support in a first, transport position. The tines project from the top surface. When inverted for earth penetration by the tines, the transport wheels are positioned out of ground contact.

Abstract: Large, paper mill reels of product are protectively wrapped for shipment by capping the reel ends with a header sheet of larger area than that reel end face circle to pleat a flange portion of the header sheet onto the cylindrical surface of reel with a resilient planar element having a freely suspended, circumferentially expansible aperture drawn coaxially over the header sheet and reel to wipe the header sheet flange onto the reel cylindrical surface.

Abstract: The washing efficiency for removal of cooking and bleaching chemicals from cellulose paper pulp on rotary vacuum filters is improved by disrupting the filter mat with a low volume, directly impinged flow of wash liquor applied intermediately of soft, displacement wash liquor applications. No additional wash liquor is allocated for respective wash stages but the mat distrubing flow volume is deducted from the predetermined requirement with the remainder divided in substantially equal proportions applied before and after the mat disturbing application.

Abstract: Wood veneer strips are butt joined end-to-end for assembly of an indefinite length strip or sheet suitable for reeling. The splicing apparatus clamps the veneer strip ends to be joined in longitudinal planar alignment for trimming by two spaced shear knives having parallel cutting planes. Following the shear cut, a reciprocating carriage for one bed knife to which one veneer strip is clamped is withdrawn from the corresponding cutting plane to permit movement of all shear knife structure from between the carriage and the other, fixed position bed knife without retracting the shear knife edges back past the bed knife edges. The reciprocating carriage is then moved along with its corresponding bed knife and clamped veneer strip into abutment with the fixed position bed knife and respective strip edge where lap splice material is laid across the joint and cured in place under heat and pressure.

Abstract: A portable coating apparatus is described for use with a paper converting machine such as a corrugated paperboard double-backer. Rotational power to drive gravure, transfer and smoothing rolls is extracted from the converting machine supply web by an S-wrap through the loaded nip between a pair of drive rolls. A low-powered auxiliary drive motor is automatically engaged to keep the gravure and transfer rolls conditioned with coating during brief intervals of web feed cessation. The entire unit is constructed on a space frame that is supported by caster wheels to facilitate movement to and from an appropriate converting machine position which may be between the reeled web supply unwind stand and a web preheating drum station leading into a double-backing machine.

Abstract: A method of improving the washing efficiency for removal of cooking and bleaching chemicals from cellulose paper pulp on rotary vacuum filters by disrupting the filter mat with a low volume, directly impinged flow of wash liquor applied intermediately of soft, displacement wash liquor applications. No additional wash liquor is allocated for respective wash stages but the mat disturbing flow volume is deducted from the predetermined requirement with the remainder divided in substantially equal proportions applied before and after the mat disturbing application.

Abstract: A machine for surface finishing wood veneer feeds the veneer to a grinding drum positioned over a rigid bed plate. A continuous loop feed belt carries the veneer to and away from the bed plate but passes thereunder to permit a rigid gap between the bed plate and the drum grinding surface. The drum is carried on a swing arm that is independently driven about an arc between a working position and a retracted, repair position.

Abstract: A machine for surface finishing wood veneer feeds the veneer to a grinding drum positioned over a rigid bed plate. A continuous loop feed belt carries the veneer to and away from the bed plate but passes thereunder to permit a rigid gap between the bed plate and the drum grinding surface. The drum is carried on a swing arm that is independently driven about an arc between a working position and a retracted, repair position.

Abstract: An activated carbon adsorption column for the treatment of waste water is continuously sterilized and/or regenerated in pulsed batches of carbon amounting to 5 to 25 percent of the working column quantity transferred, alternately, from the influent face of the column to one of two, off-stream blow case vessels for steam processing and returned to the effluent face of the working column upon the next programmed pulsing interim.

Abstract: A rotary envelope machine blank cutter is provided with laterally adjustable, independent frame units for each meshing set of knife rolls for changing the depth of a side cut into a blank for envelope size and style production changes. The rotational and axial meshing of hard and soft knives respective to a single knife roll set is adjusted without disturbing the roll mount of either knife. Changes in envelope length or style are accommodated by the mechanical capacity to adjust the rotation cut timing between the knife roll sets of a two-set unit and also between respective cutting units of two or more two-set units. As in the case of lateral cut adjustments, knife roll mounts are undisturbed by rotational timing adjustments. Consequently, the machine may be quickly and accurately changed for production runs of any of several envelope style and several sizes respective to each style: all adjustments being made without disturbing the knife profile mesh of any knife set.