Abstract: A support for use in electrophotographic sensitive plates which is superior in durability as well as half-tone reproducibility as photosensitive material and is prepared by forming a barrier layer on practically the whole surface of a conductive base plate by burying fine particles of metal oxide therein.

Abstract: A method and apparatus for separating and winding pre-treated yarn, for example, tire cord, the method comprising two stages. In a first stage, a coated and heat-set fabric, constituted of longitudinally running warp cords and laterally running picks interlaced with the warp cords, is subdivided into a plurality of elongate tapes, each tape having a lesser number of warp cords than the fabric and picks of reduced linear extent. The tapes are then wound into respective packages. In the second stage, the tapes are unwound and divided each into a plurality of independent warp cords free from the picks. The warp cords are then wound into respective packages.

Abstract: A weakening composition printed onto newsprint in a predetermined pattern causes the newsprint to weaken within a short period of time along the lines of the pattern so that the newsprint tears preferentially along the outline of the pattern.

Abstract: A gang bonding interconnect tape for use in an automatic bonding machine for gang bonding of semiconductive devices is fabricated by depositing a series of electrically insulative support structures, such as rings of epoxy resin, onto a metallic tape, as of copper, there being at least one of said electrically insulative support structures for individual ones of the interconnect lead patterns to be formed in said metallic tape. The side of the metallic tape, opposite to the support structure, is photoetched with a series of interconnect lead patterns with individual ones of said lead patterns being etched in registration with individual ones of said electrically insulative support structures. The individual electrically insulative support structure, preferably in the form of a ring, is located in each of the lead patterns intermediate the central region thereof and the outer region thereof for supporting the individual leads thereof in circumferentially spaced relation.

Abstract: The instant invention relates to a method of decorating an extruded plastic strip which is used for ornamental purposes. In the method of the invention, a plastic strip is passed through a pair of rollers which emboss the face thereof to be decorated with a raised design. The entire decorative face is then covered with a release agent from the top surface of the raised design. A coloring material is then applied to the entire decorative surface. Excess coloring and the release agent are thereafter washed, peeled, or otherwise removed from the strip. The design is then highlighted by the coloring material thereupon.

Abstract: A method for determining the degree of cure of glass fibers coated with a heat-cured polymeric material wherein the coated glass fibers are contacted with water at an elevated temperature for a time sufficient to extract watersoluble carbon material from the heat-cured polymeric material, and the resulting extract is subjected to analysis to determine the carbon content of the extract. It has been found that the carbon content of the aqueous extract is inversely proportional to the degree of cure of the polymeric material.

Abstract: Methods for treating or producing original documents to inhibit, if not preclude, the reproduction of such documents by copying processes. The documents so produced favor the visual response of the human eye over the physical response of a copying machine so that the graphical information imprinted on the document background is readily perceptible by the human eye but imperceptible by the sensor and associated processes of a copying machine.

Abstract: A process for treating a steel surface, comprising the steps of immersing the surface in a bath of molten tin at a temperature and for a period of time suitable to cause a layer of tin containing diffused iron to adhere to the surface and, after removal of the surface from the bath, removing a surface layer in which iron and tin accord substantially with the formula of Fe Sn.sub.2 so as to expose a layer in which iron and tin accord substantially to the formula Fe Sn.

Abstract: A caster utilizing mounting structure, leg structure rotatably mounted on the mounting structure, and a wheel rotatably mounted upon the legs wherein the relatively movable parts of the caster are sealed against the entrance of foreign matter by means of a resilient synthetic material cover. In the method of constructing a caster in accord with the invention components thereof are coated with the coating material, such as by dipping, and the coating material, after curing, is severed at the desired locations to form sealing edges between relatively movable components. In a preferred method of forming the caster, mandrels having a configuration similar to the final caster components may be employed, however, it is within the scope of the invention to use the caster components themselves for molding purposes wherein the sealing material is later severed at the desired locations.

Abstract: In a process of producing capacitors, synthetic dielectric layers carrying metal layers thereon are wound, in a stretched condition, about a drum to form a mother capacitor. Individual capacitors are then formed from the mother capacitor by sawing, with a rotating saw blade, through the mother capacitor. Due to the heat which is developed during sawing, the stretched layers contract in the region of sawing causing a break up of the metal layers which then oxidize to form insulating islands. This process is improved by applying an insulating lubricant to the saw blade to increase the dielectric strength of the capacitors at the saw cuts.

Abstract: A process for cutting a multi-filament tow into fibers of ultra-short length and narrow size distribution is provided. Initially, a multi-filament tow is passed through a bath of liquid impregnating material at elevated temperature. The impregnated tow is then passed through a die which is sized to control the quantity of material impregnating the tow and to compact the filaments of the tow into a closely packed bundle. The resulting tow is then cooled to solidify the impregnating material and to convert the tow to a rigid form. The rigid tow is then cut, yielding wafer-thin disks. The impregnating material is then stripped from the wafer-thin disks with a solvent followed by removal of the solvent, thereby yielding fibers of ultra-short length and narrow size distribution.

Abstract: A transfer machine and system is disclosed which automatically performs a series of marking, cutting, sorting, and the like operations in the manufacture of a large number of test material samples. The transfer machine operates under the control of a card or tape reader which provides coded information such as marking indicia, pattern number and thickness of the material for each test sample. This information is encoded, temporarily stored and then shifted in a series of parallel shift registers in sequence with the corresponding test sample as it progresses through each stage of the transfer machine. The contents of the shift registers at each stage are decoded to provide the control signals for the corresponding marking, cutting, sorting, and similar operations.

Abstract: An improvement in phonograph records, and method of making the same dealing particularly with a record formed in a coating applied to paperboard and normally used as a wall of a carton or the like.

Abstract: Shipping carton liner and method for making the same, which consists of a unitary sheet of synthetic plastic foam composed of a pluality of panels separated by grooves or score lines of sufficient depth and of a configuration to enable the panels to be swung from coplanar to mutually perpendicular orientation. A resilient layer is applied to the foam, at least along the score line portions thereof and is characterized by a tear strength and flexibility greater than said foam. In one embodiment, the resilient layer is obtained by forming a densified skin on the surface of the foam. The layer of resilient material and the score lines form a hinge for the pivotal movement of the panels. Apparatus is also provided for fabricatng such liners or cartons.

Abstract: A synthetic leather consisting essentially of three adherent microporous polyurethane layers, including a first base layer of a polyurethane impregnated fibrous fleece or web, a second or intermediate polyurethane layer containing 3-30% by weight of very finely divided insoluble solid particles with an individual volume is less than 2.times.10.sup..sup.-2 mm..sup.3 and with a maximum length generally below about 0.3 mm., preferably less than 0.1 mm., and a third or cover polyurethane layer which can be finished in a conventional manner. The product is especially distinguished by a smooth and uniform surface resistant to the "orange peel" effect. The method is distinguished by the application of the intermediate layer before the base layer is completely coagulated or solidified in the formation of the microporous structure.

Abstract: A method for preparing a preconditioned dry electrographic developer comprising the steps of: a) intimately mixing together an unconsolidated mass of carrier particles, and an unconsolidated mass of resin based toner particles containing charge control agent in greater concentration than desired in the final developer, the concentration of said toner in the resulting mixture being less than desired in the final developer, such mixing being for a sufficient length of time and in such a way as to pack any pores of said carrier particles with toner, to scum the surfaces of said carrier particles with charge control agent, and to abrade the surfaces of said carrier particles; and b) introducing into and intimately mixing with said resulting mixture an additional quantity of resin based toner particles containing charge control agent in about the same concentration as desired in the free toner in the final developer, said additional quantity together with the free toner present after step (a) bringing the concentr

Abstract: A method of forming membrane covered laminate strips of a desired predetermined length from an elongated porous strip wherein said strip is impregnated at spaced predetermined sections with a fluid seal material to preclude fluid flow through such sections and is also coated on each face with a suitable membrane forming coating material to thereby form a laminate strip suitable for reverse osmosis and/or ultrafiltration usage. The resulting laminate strip is provided with a punched hole in a portion of the impregnated section to effect a fluid passageway opening therethrough and, additionally, is cut transversely through an intermediate portion of such section to result in the formation of a multiplicity of predetermined length laminate strips. A plurality of stacked strips, with the punched hole positions staggered in adjacent strips, or groups of strips, provides a simplified form of apparatus with an elongated serpentine flow path therethrough for separating the constituents of a fluid feed stream.

Abstract: Solid gas-permeable synthetic polymeric articles are chemically filled with a filler compound formed in situ. These deposits are produced by diffusing one or more diffusion compounds into a solid gas-permeable polymer and reacting or decomposing the diffusion compound(s) to form deposits throughout the article. The compounds may be preferentally deposited in a planar zone of sheet material in an amount sufficient to cause the sheet to split.

Abstract: An elongated continuous porous sheet of fibrous carbon, such as paper of matted graphite fibers, woven graphite cloth or carbonized filter paper is longitudinally traversed through a reduced pressure heating zone (5 mm. of Hg.) in which hydrocarbon gas is perpendicularly directed at relatively high velocities through restricted flow passages at the sheet, which is heated to a temperature of about 2200.degree.C. The sheets are traversed at a speed of about 60 to 3600 feet per hour at a temperature of about 2000.degree. to 2400.degree.C at a pressure of from about 4 to 20 mm. Hg. A hydrocarbon gas, at a flow rate of from about 5 to 20 c.f.m. effectively infiltrates the carbon sheet material and increases the sheet density by at least 20 grams per square meter. The velocity of the carbon depositing flow stream is maintained at from about 20 to 200 ft. per minute (STP).

Abstract: A fused resin coating is formed on a yarn fabric by impregnating the fabric with a liquid plasticizer for the resin and then coating the impregnated fabric with solid resin powder. The resin-coated fabric then is heated to fuse the resin. The coated fabrics obtained are more flexible and have better strength characteristics than fabrics coated with a resin plastisol composition.

Abstract: A process for flame scarfing places of errors or surface defects on a work piece such as ingots, slabs or the like, by means of at least one flame-scarfing torch is characterized by raising and/or accelerating the flame-scarfing torch from its flame-scarfing position prior to the end of the place of error without changing the other flame scarfing parameters.