A process for producing yarns that have enhanced resistance to unraveling and linting. The yarns are moved along guides through a needle loom where a series of needles engage the yarns. This engagement of the yarns by the needles causes the fibers of the yarns to become intermixed.

A yarn is provided which includes a core formed of a glass material and a wrapping yarn wound about the core. The core has a roughened surface, which tends to engage and hold the wrapping yarn. The yarn may exhibit excellent strength, cut resistance and heat resistance, while providing a smooth finish. A method of making the yarn includes roughening the surface of the glass filament by various means.

A process for producing yarns that have enhanced resistance to unraveling and linting, wherein the yarns are moved along guides through a needle loom where a series of needles engage the yarns. This engagement of the yarns by the needles causes the fibers of the yarns to become intermixed.

A yarn is provided which includes a core and a wrapping yarn wound about the core. The core may include glass, metal and carbonaceous fibers which may be roughened and/or stretch-broken. The yarn may exhibit enhanced performance properties, such as strength, cut resistance and heat resistance. A method of making the yarn includes combining a glass filament and metal filament in a core wrapped by a sheath.

An antimicrobial filter cartridge having a perforated core member wrapped with a first microporous membrane, which is in turn overwrapped with second and third microporous membranes. The membranes are covered with a criss-cross wrapping of antimicrobial treated yarn. The filter cartridge is sized so as to fit tightly into a cartridge housing of a fluid filtration system. Fluid passing through the cartridge housing will be filtered by the filter cartridge to remove microorganisms from the water a...

A lipped sealing ring for a mechanical component that moves relatively to it. The lip is of a polymeric material, is flexible, and is forced subject to resilient compression against the component in the vicinity of a sealing gap. A helical shoulder extends longitudinally and at an acute angle to the axis of the component through at least one point along the circumference of the gap. The sealing gap is packed with wax at least in the vicinity of the helical shoulder.

An antimicrobial filter cartridge having a perforated core member wrapped with a microporous membrane, which is overwrapped with a spiral wrapping of an antimicrobial agent impregnated yarn. The spiral wrapping is covered with a criss-cross wrapping of yarn. The filter cartridge is sized so as to fit tightly into a cartridge housing of a fluid filtration system. Fluid passing through the cartridge housing will be filtered by the filter cartridge to remove microorganisms from the water and which ...

A bacteriostatic filter cartridge having a porous core member about which is layered a yarn and/or a polyester membrane and/or melt blown web of polypropylene and/or a trilaminate polypropylene membrane, any or all of which may be impregnated with an antimicrobial agent. The filter cartridge is sized so as to fit tightly into a cartridge housing of a fluid filtration system. Fluid passing through the cartridge housing will be filtered by the filter cartridge to remove contaminants from the water...

A scraping apparatus 1 for use with a belt conveyor. The scraping apparatus 1 comprises a base portion 3 adapted for engagement with a holder 7 disposed to support the apparatus 1 adjacent a conveyor belt 2. A blade portion 10 is adapted to scrape the surface of the belt 2 and, thereby, remove residual material. An intermediate web portion 15 is resiliently deformable to permit a limited degree of relative displacement between the blade portion 10 and the base portion 3, to accommodate surface i...

A heat and flame resistant sewing thread having a core strand formed of glass material filaments is wrapped with a sheath of staple fibers spun about the core strand A lubricant is applied along the core strand to assist in the wrapping of the core strand with the sheath fibers. The sheath fibers include a series of microdenier fibers and generally will be ring spun about the core strand.