Abstract: An apparatus for making alternate S and Z twist plied yarn from individual singles yarns. The apparatus twists the singles yarns as they move in a path through the process, twisting the individual yarns in either an S or Z direction. The bonding of the ply-twisted yarns at a node while applying twist forms a bond characterized by a dense region of filaments adhesively joined together where one of the strands overlaps another strand, followed by a less dense region along the one strand where fewer filaments are adhesively joined, followed by another dense region.

Abstract: An elongated pile article having a support strand for attachment to a plurality of yarn bundles, the yarn bundles including a dense portion with the filaments bonded to each other and bonded to the support strand, pile surface structure comprised of a plurality of elongated pile articles placed one next to the other, and a method and apparatus for making the elongated pile article.

Abstract: Method to delete and reintroduce individual yarns as needed when they are being fed to a textile process by cutting an individual yarn, that is being forwarded to the process, rapidly to prevent producing a disruptive tension change in the process or in other yarns being forwarded to the process to produce an upstream cut end of an individual yarn; holding the upstream cut end of said individual yarn in an elongated condition at a ready position for reintroducing to the process; and reintroducing said yarn at said ready position to the textile process according to the following steps; metering said individual yarn from said source at a controlled rate; passing said cut end of yarn with a first individual yarn forwarding jet for forwarding said cut end from said ready position and maintaining said cut end of yarn in an elongated condition during said metering; directing said elongated, cut end of yarn in a path past an individual yarn cutter; passing for forwarding said elongated cut end of yarn from said cutt

Abstract: An elongated pile article having a support strand for attachment to a plurality of yarn bundles, the yarn bundles including a dense portion with the filaments bonded to each other and bonded to the support strand, pile surface structure comprised of a plurality of elongated pile articles placed one next to the other, and a method and apparatus for making the elongated pile article.

Abstract: A system for bonding alternate S and Z twist plied yarn. The system bonds the plied yarns as they move in a path through the process and permits balanced expansion of the yarn while preventing lateral movement out of the path. The bonding of the yarn strands while plied together, forms a bond characterized by a dense region of filaments adhesively joined together where one of the strands overlaps another strand, followed by a less dense region along the one strand where fewer filaments are adhesively joined, followed by another dense region.

Abstract: A hollow-fiber membrane fluid-separation apparatus containing a plurality of hollow-fiber bundles is disclosed. The apparatus comprises a single-pressure container with a center chamber located in between facing ends of each bundle. The center chamber is in communication with an annular space around adjacent bundles and a discharge tube concentrically housed within a feed tube. The hollow-fiber membrane fluid separation apparatus is adapted for industrial performance with high volumetric efficiency and high solute rejection. A process for separation of fluids is also provided.

Abstract: A permeable membrane apparatus having one or more hollow-fiber bundles enclosed in a single housing with end caps adapted so as to segment the bundles into a plurality of portions that can be separately used for fluid separation and its use.

Abstract: Transparent sheet for use with ink jet printers and pen plotters which utilize hydrophilic solvent-based inks. The sheet comprises a transparent backing bearing on at least one major surface thereof a transparent coating formed of a blend of at least one hydrophilic polymer containing a carbonylamido functional group and at least one hydrophobic polymer substantially free of acidic functional groups, hydroxyl groups, >NH groups and --NH.sub.2 groups.

Abstract: Shell-less hollow fiber gas permeators are disclosed wherein the hollow fibers are arranged in a bundle of paallel fibers embedded in a tube sheet at both ends. The tube sheets are fitted with caps to provide a pressure chamber which have ports for fluid communication. The end caps and tube sheets are mounted on a central rod to hold them rigidly in position. A plurality of the permeators are arranged in an array within an enclosure with ends in a common plane and the ends are in fluid communication with each other. The enclosure is provided with a vent and in a preferred aspect air is drawn over the permeators.

Abstract: A fluid permeator apparatus is disclosed which comprises an outer cylindrical shell having disposed therein a generally concentric outer central tube in communication with a port at one end of the cylindrical shell and a port at the opposite end of the cylindrical shell which is in communication with an inner central tube located within the outer central tube. The outer central tube is perforated so as to render it in communication with the its outer surface. A plurality of permeator hollow fiber bundles having annular cross sections are removably mounted on the outer central tube. The hollow fibers are mounted with their open ends in at least one tubesheet which is in communication with the inner central tube. The cylindrical shell has an additional port for feeding fluid to be separated or removing residue.

Abstract: A double-ended permeator. Permeate is extracted from both ends of a fiber bundle and discharged at one end only of a permeator.

Abstract: Transparency film for use in a plain paper electrostatic copier. The transparency film comprises (a) a flexible, transparent, heat resistant, polymeric film base, (b) an image receiving layer carried upon a first major surface of the film base, and (c) a layer of electrically conductive material carried on a second major surface of the film base. Where necessary a primer coat is interposed between the image receiving layer and the film base and/or between the layer of electrically conductive material and the film base. A protective coating is preferably applied over the layer of conductive material. This film can be used in either powder-toned or liquid-toned plain paper copiers for making transparencies.

Abstract: A granulated blasting agent composition comprising ammonium nitrate, a nitroalkane having of from 2 to 3 carbon atoms and mixtures thereof, a density improver selected from the group consisting of wheat flour and bentonite and polyoxyethylene ether as a thickening agent for the nitroalkane in an amount sufficient to prevent migration of the nitroalkane from the ammonium nitrate.

Abstract: Magnetic printing apparatus for forming on a substrate a colored print of an original colored design, said apparatus comprising a ferromagnetic printing means which is imposed on an electrically conductive support; means for forming on the ferromagnetic printing means a magnetic image of a photocolor-separated film positive of the original colored design; means for developing the magnetic image on the ferromagnetic printing means with a toner comprising a ferromagnetic component, a dye and a resin; means for transferring the developed image to the substrate, and means for neutralizing static electricity on said toner. Optionally, the apparatus may include: means for transferring the developed image from one substrate to another; means for fixing said dye on and/or in an ultimate substrate; and/or means for removing said ferromagnetic component and said resin.

Abstract: A process for reproducing graphic information wherein a magnetic image is formed in a premagnetized layer of acicular chromium dioxide by heating the chromium dioxide selectively to above its Curie point. Ferromagnetic toner particles are then applied uniformly to the chromium dioxide layer, so as to adhere only in the magnetized areas. The toner particles are electrostatically transferred to a substrate and fused into position. Alternating current coronas or other static neutralizing devices are used to neutralize unwanted charges on toner particles which would otherwise cause fuzzy images and unwanted background markings on the final copies.

Abstract: Magnetic printing apparatus for forming on a substrate a colored print of an original colored design, said apparatus comprising a ferromagnetic printing means which is imposed on an electrically conductive support; means for forming on the ferromagnetic printing means a magnetic image of a photocolor-separated film positive of the original colored design; means for developing the magnetic image on the ferromagnetic printing means with a toner comprising a ferromagnetic component, a dye and a resin; and means for transferring the developed image to the substrate. Optionally, the apparatus may include: means for adhering the developed image to the substrate; means for fixing said dye on and/or in a substrate; and/or means for removing said ferromagnetic component and said resin.

Abstract: A method of drilling and blasting a field is disclosed. By use of a certain combination of blasting agents, it is possible to expand the bore hole pattern by 30 to 50%, thereby decreasing the number of bore holes per unit of area to be blasted.

Abstract: A blasting agent comprising ammonium nitrate, fuel, a nitroalkane and bentonite as a thickening agent.

Abstract: A magnetic image decorator is disclosed wherein two or more rotatable cylindrical magnetic augers disposed in a sump of magnetically attractable toner are used in conjunction with cooperating knife blades to decorate a surface containing a latent magnetic image and to distribute and redistribute toner particles to maintain a level sump.

Abstract: A process for reproducing graphic information wherein a magnetic image is formed in a premagnetized layer of acicular chromium dioxide by heating the chromium dioxide selectively to above its Curie point. Uncharged ferromagnetic toner particles are then applied uniformly to the chromium dioxide layer, but adhere only in the magnetized areas. The toner particles are then transferred electrostatically to a substrate.