Abstract: Drawn optical fiber is provided with at least one layer of a coating material. The coating material typically is a UV curable material and provides the optical fiber with mechanical and environmental protection. It has been found that the temperature at which the optical fiber is cured has a pronounced effect on the modulus of the cured coating material. In order to provide a coated optical fiber of which the coating material has a desired modulus, the temperature of the coating material during cure is controlled by controlling the amount of energy of infrared wavelength which impinges on the coating material.

Abstract: Dealkalized sheet glass having a core region which is not dealkalized, having a pre-dealkalization bulk sodium ion concentration of at least 8%, calculated as weight percent sodium oxide in the sheet glass, which pre-dealkalization bulk sodium ion concentration continues to be maintained in the core region of the sheet glass, and having a surface which is dealkalized to a depth such that a sodium ion concentration gradient exists. The sodium ion depletion is maximum at the surface, the depth at which the sodium ion concentration is 90% of the pre-dealkalization bulk sodioum ion concentration is at least twice the depth at which the sodium ion concentration is 50% of the predealkalization bulk sodium ion concentration, and the sodium ion concentration at a depth of 50 nm is not more than 50% of the pre-dealkalization bulk sodium ion concentration. A long-lasting dealkalization is achieved because of a reduced tendancy to ionic migration due to the shape of said sodium ion concentration gradient.

Abstract: A roof machine for the electrostatic paint coating of the front end, roof, and rear surfaces of an automobile chassis, transported on a conveyor belt includes a roof beam equipped with atomizers, the roof beam extending over the conveyor belt. Opposite ends of the roof beam are positioned in two vertical columns, one column containing the drive elements for the roof beam and the atomizers, and the other column containing the paint supply for the atomizers. The roof beam is positioned in the vertical columns that the roof beam can be moved up and down and can be rotated around its longitudinal axis as well, and the atomizers can be moved jointly back and forth and tilted and individually adjusted with respect to their lateral spacing relative to one another. The housing jacket of the roof beam is cylindrical.

Abstract: A pinstripe painting guide is fabricated by attaching a magnetic flexible guide rail to a hollow flexible support member by mating a channel to a T-shaped male mating member. This assembly is then attached to a surface to be painted and adjusted to provide an appropriate contour. The ends of the hollow support member are then plugged and the hollow support member is then flooded with a hardenable liquid such as fiberglass resin. When the liquid cures, the resulting tool is rigid and can be used for repeated application of similar pinstripes to the same type of surface. This process, for example, can be used to produce such a guide assembly for a particular model of automobile.

Abstract: A method to produce a microstructure on glass which is of excellent quality and allows for repeated use of a stamper. The method comprises heating the glass to a surface temperature corresponding to a log viscosity between about 13 to 8 poise, supporting the glass and impressing it with the stamper heated to about the same temperature as the glass so that a microstructure on the heated stamper will deform the surface of the glass to give a corresponding microstructure on the surface of the glass, which when separated from the stamper and cooled in a controlled manner gives the desired surface microstructure on the glass. The method is particularly suitable for forming tracking grooves on optical disk substrates.

Abstract: A bonding assembly for bonding carbon fibrous segments with adhesive on one side, to a frustoconical surface of an annular clutch member. The bonding assembly includes a ring member with a frustoconical surface complementary to the annular clutch member frustoconical surface. Three of the segments are spaced circumferentially apart and sandwiched between the annular clutch member frustoconical surface and the ring member frustoconical surface with, the adhesive sides of the segments positioned against the annular clutch member. The clutch member and ring member are placed on a base with a post extending vertically upward through the concentric axis of the clutch and ring members. A spring mechanism includes a second element for engaging the post and exerting a downward force to clamp the ring member, clutch member, and segments together. The bonding assembly can then be positioned in a source of heat for curing the adhesive under constant force.

Abstract: A bottom plate for an H-28 machine is secured to a post which is received within a hollow stud and sits on a ball bearing supported within the stud. The post which has an annular groove cooperates with a plurality of locking pins which can be held in operative relation with the post groove or released by a rotatable collar.

Abstract: A metal powder is added to ceramic paint to prevent scratches on the painted surfaces of glass sheets formed by the gas hearth process.

Abstract: According to the present invention, a preform (7) for an optical fiber is made from a tube having a substrate layer (16) of fluorine-doped silica and a support layer (18) of non-doped silica. A cladding layer (8) of fluorine-doped silica and a core layer (10) of non-doped silica are formed on the inside surface of the tube by chemical vapor phase deposition. The optical fiber is subsequently obtained by collapsing the tube and drawing it. The invention is applicable to fabricating optical fibers.

Abstract: A device for selectively moistening the flap of envelopes has a moistening member and a pivoting moistening deflector selectively operable to moisten the flap or not. It further comprises a pivoting slide bar to the front of the moistening member and actuated between a protection position and a retracted position in front of the moistening member. The moistening deflector is adapted to cooperate with the slide bar and the moistening member and is coupled to the bar so that they are actuated virtually simultaneously. The device finds applications in automatic mail handling.

Abstract: The present invention relates to chromatography column for process scale high performance purification, which has high stability and structural integrity regardless of the internal diameter or operating pressures. The chromatography column according to the present invention includes a sealing arrangement which enables the production of internally leak proof chromatography columns having large internal diameters at relatively low cost. The present invention also relates to the seal for the chromatography column.

Abstract: A spray painting apparatus having an arm attached with a spray nozzle and a support unit for pivotably supporting the arm via a pivot shaft. An arc-shaped guide is provided to either the arm or the support unit, with the guide being coaxial with and larger in diameter than the pivot shaft while a drive unit is provided to the other of the arm and the support unit so as to move either the support unit or the arm relative to and along a periphery of the arc-shaped guide.

Abstract: A longitudinally extending row of closely spaced elongated flexible springs extend over an elongated slot of a furnace to prevent heat loss. The springs are deflected in turn as an arm moves along the length of the slot and the springs return to their original state after the arm passes by. The arm holds a glass handling device which holds a glass sheet within the furnace. The arm moves along the length of the slot so as to transport the glass sheet through the sections of the heat treating furnace.

Abstract: A method for reclaiming plastic and cellulosic fiber from plastic coated waste. The method includes the steps of introducing previously hydropulped plastic coated waste into a size reduction unit to reduce the plastic coated waste to a maximum dimension of about 1-4 inches. The plastic coated waste is then subject to flotation with agitation to separate the plastic from the cellulosic fiber. The cellulosic fiber is then screened, dried, and baled. The plastic is further reduced to a maximum dimension of about 1/2 inches and dewatered. The dewatered plastic is dried to a moisture content of less than 10% and rolled into plastic pellets. This method produces plastic pellets comprising from about 5 to about 10 weight percent cellulosic fiber and less than about 10 weight percent water from hydropulper plastic coating waste.

Abstract: The device described herein comprises a ladle type utensil having a handle attached to a substantially cylindrical cup having a bottom comprising either a flat or preferably a concave bottom in which a number of "domes" are set, which "domes" extend upward from the bottom of the said cup. Each dome has an opening at the crest thereof, which dome openings provide the only means for liquid to flow from beneath the cup into the interior of the cup. In the preferred modification there are seven of said domes, one being positioned in the center of the cup bottom and the others being arranged in a cricle around the central dome.

Abstract: A paint fixture, for supporting a workpiece during the electrostatic application of a spray paint, has an electrically conductive metallic body. The body has a first surface portion that is covered by the workpiece during the electrostatic paint spray application process, and a second surface portion that is covered by a heat resitant, electrically nonconductive material.

Abstract: A process for the continuous digestion of cellulosic fiber material is described wherein the material is impregnated with liquid in a closed system comprising a concurrent flow zone and a countercurrent flow zone, the liquid in the concurrent flow zone including black liquor and possibly white liquor and the liquid in the countercurrent flow zone including white liquor. Liquid is withdrawn from the impregnation system at a point located between the concurrent flow zone and the countercurrent flow zone. Besides white liquor a predetermined amount of black liquor is added to the countercurrent flow zone in order to obtain a high liquid to wood ratio in the inlet of the digester.

Abstract: The invention relates to high energy beam-sensitive glass articles exhibiting insensitivity and/or inertness to actinic radiation, glass articles which are darkened and/or colored within a thin surface layer of about 0.1-3 .mu.m upon exposure to a high energy beam, electron beam, and ion beams in particular, without a subsequent development step, and which need no fixing to stabilize the colored image, since both the recorded image and the glass article are insensitive to radiation in the spectral range of uv and longer wavelengths. The instant invention is concerned with Ag.sup.+ ion-exchanged glass articles having base glass within alkali metal silicate composition fields containing at least one of the oxides of transition metals which have one to four d-electrons in an atomic state. The base glass composition can be varied widely, spontaneous reduction as well as photo-reduction of Ag.sup.+ ions are inhibited and/or eliminated due to the presence of said transition metal oxides in the glass article.

Abstract: A spray coating booth for enclosing individual articles to be coated with a liquid spray while the articles are supported in closely spaced relation on an article conveyor for movement through the booth includes a rigid frame with fixed sidewalls and movable top and end walls which may be moved between a closed position completely enclosing an article supported on the conveyor and an open position to permit articles to be moved into and out of the booth. The movable top assures against coating liquid dripping onto and contaminating articles moving on the conveyor which are not to be coated. The end walls are supported for movement in substantially a transverse vertical plane to permit close spacing of articles on the conveyor without contact of the articles by the end walls.

Abstract: The present invention relates to a method of qualitative and quantified monitoring of the instant local physical state of a substantially incompressible fluid material such as a liquid or pasty substance (for instance slurry or pulp) and a device for carrying out this method and the various applications and uses resulting from the working of the method and/or device for the automatic control of said physical state. The invention is also directed to the various equipment and systems provided with at least one such device.