Abstract: This invention comprises an aqueous size composition comprising polyvinylacetate and 3-chloropropyl trimethoxysilane. Additionally, the size will comprise a film former and a neutralizer.

Abstract: A method and apparatus for gathering strand material from a plurality of sources of strand material comprising a rotatable roll means for pulling the strand material from the sources, primary drive means for rotating the roll means, ring means mounted for rotation coaxially with the roll means and adapted to pull strand material from one or more of the sources, secondary drive means for rotating the ring means at rates independent of the rotation of the roll means, and means for axially moving the ring means into and out of communication with the roll means.

Abstract: The invention relates to apparatus for producing fibers from heat softened mineral material, such as glass. More specifically, this invention relates to an orifice plate for a glass fiber drawing bushing of the type having a flat undersurface and a plurality of orifices formed therethrough with the improvement comprising at least two sets of grooves formed on said undersurface, said grooves extending in intersecting relationship to divide said undersurface into a plurality of sections, said orifices being located within said sections. The grooves can have a width in the range of from aout 0.1 mm to about 1.2 mm and a depth in the range of from about 0.1 mm to about 0.5 mm. The orifice plate can comprise rod members at the intersections of the grooves with said rod members projecting beneath said grooves.

Abstract: The disclosure embraces a method of and apparatus for automatically and remotely detecting and indicating when any filament breaks out or other discontinuity occurs in the process of attenuating streams of filament-forming material, such as glass, into filaments and wherein a break-out or discontinuity results in an accumulation or collection of the material or glass at the region of the break-out.

Abstract: A method and apparatus for collecting strand are provided comprising: supplying a first strand segment; rotating a member to collect the first strand on the member; varying the speed of the rotatable member according to a predetermined pattern; sensing the absence of the first strand being wound around the member to identify a reference point in the pattern at the incidence of sensing the absence of the first strand; supplying a second strand segment to the member; initiating collection of the second strand upon the member having the first strand segment thereon substantially at a speed substantially corresponding to the reference point in the pattern; and continuing to rotate the member according to the pattern subsequent to the reference point to wind the second strand segment therearound.

Abstract: An improved aqueous composition for impregnating multifilament glass strand comprises emulsified polybutadiene homopolymer, butadiene-styrene-vinylpyridine terpolymer, resorcinol-formaldehyde resin, emulsified wax, a thickening agent and a defoaming agent with the homopolymer and the terpolymer emulsified with a synthetic anionic surfactant having sulfate, sulfonate or sulfosuccinate groups.

Abstract: A method and apparatus for separating rolls of web material of the type where two or more rolls are attached at the side edges thereof comprising passing the first roll between an upper and lower conveyor defining a first path of travel, and simultaneously passing each attached roll between additional upper and lower conveyors defining a path of travel for each attached roll, where the path of travel for each roll is sufficiently vertically separated from its immediately adjacent path that the rolls passing therethrough are separated.

Abstract: A method and apparatus for applying size to an array of fibers of the type in which the array of fibers is directed past at least one nozzle adapted to spray a size onto the array of fibers, wherein the improvement comprises means, positioned immediately upstream from the nozzle, for removing the entrained gases flowing with the array of fibers and a conduit having a decreasing cross sectional area in the downstream direction positioned downstream from the nozzle.

Abstract: The bushing (10) has a plurality of hollow bushing branches (10a, 10b, 10c, 10d) open to and extending radially from a central supply space (10e), resulting in better temperature control compared to a rectangular bushing with the same number of holes.

Abstract: A method and apparatus for measuring the expansion of a mat of fibrous material in which a contact plate is periodically moved vertically into and out of contact with the surface of a mat of fibrous material, contact between the contact plate and the surface of the mat is sensed, and the position of the contact plate is recorded responsive to the occurrence of contact between the contact plate and the surface of the mat.

Abstract: Composite insulating panels each having a generally rectangular casing and insulating material in the casing are mounted by mechanical fastening means in a covering layer over an inner surface of a supporting enclosure. A cross-shaped joint cover member is installed between four adjacent corner portions of each group of four rectangularly arranged composite panels. A straight joint cover member is installed between each pair of adjacent composite panels, a pair of opposite end portions thereof being joined respectively to a pair of the cross-shaped joint cover members. Each of four leg portions of each cross-shaped joint cover member has a generally U-shaped cross section open toward the inner surface of the supporting enclosure. Each straight joint cover member has a generally U-shaped cross-section open toward the inner surface of the supporting enclosure.

Abstract: The roof structure (10) comprises spaced parallel I-beams (12), spaced parallel generally Z-shaped purlins (14) extending transversely of and supported by the I-beams (12), insulation support members (16) hung on the purlins (14), fibrous glass boards (24) with facing (25) supported by the insulation support members (16) beneath the purlins (14), fibrous glass batts (26) covering the boards (24) between the purlins (14), and roof panels (28) secured to the purlins (14) and covering the batts (26), each insulation support member (16) comprising an elongated board-edge sealing member (20) supported respectively adjacent opposite ends by a pair of hangers (18) hung on a purlin (14) and each having a pair of guide and support arms (22) respectively extending oppositely therefrom transversely of the board-edge sealing member (20).

Abstract: Apparatus for dividing a fibrous mineral blanket comprising means for slitting the blanket into batts, a suction chamber having one or more narrow openings adapted for contact with the side edges of the batts, and a vacuum pipe extending into the chamber for educting air and airborne particles from the chamber and the side edges of the batts, where the vacuum pipe has its eduction opening positioned near the bottom of the chamber.

Abstract: The roof structure (10) comprises spaced parallel I-beams (12), spaced parallel generally Z-shaped purlins (14) extending transversely of and supported by the I-beams (12), insulation support members (16) hung on the purlins (14), fibrous glass boards (24) with facing (25) supported by the insulation support members (16) beneath the purlins (14), fibrous glass batts (26) covering the boards (24) between the purlins (14), and roof panels (28) secured to the purlins (14) and covering the batts (26), each insulation support member (16) comprising an elongated board-edge sealing member (20) supported respectively adjacent opposite ends by a pair of hangers (18) hung on a purlin (14) and each having a pair of guide and support arms (22) respectively extending oppositely therefrom transversely of the board-edge sealing member (20).

Abstract: Method and apparatus for predrying and preheating pellets involving an oscillating grate extending angularly downward across the predrying section and discharging into the preheating section.

Abstract: The incorporation of an additive selected from the group consisting of sodium carbonate, sodium hydroxide and boric acid into a glass batch pellet comprising uncalcined colemanite imparts to the pellets improved strength when heated to 1100.degree. F. (593.degree. C.).

Abstract: A pellet preheat hopper is disclosed, the hopper being equipped with agitator means proximately coincident with the upper operating pellet level to break up pellet encrustation.

Abstract: A method of preheating glass batch pellets in which a controlled first stream of hot gases is employed to predry pellets and a second stream of hot gases is employed to preheat the pellets and in which the two streams are combined and withdrawn from the system.

Abstract: The disclosure embraces a method of and apparatus for processing heat-softenable materials, such as glass, to form fibers or filaments from the streams of material and more particularly effecting successive distortions, oscillations or vibrations of the streams of glass by directing streams or jets of liquid for cooling or quenching the streams of glass at the region of formation of the fibers or filaments for establishing successive kinks, bends or crimps in the attenuated fibers or filaments, and delivering or conveying by the quenching streams of liquid or other streams of liquid powdered or particulate materials or metals for combining with, coating or reacting with the glass of the streams at the region of formation of the fibers or filaments for producing combined metal and glass fibers or filaments or coating the glass fibers or filaments with metals or other materials and utilizing electric current potential applied to the streams of liquid entraining metal or other particulate materials for establish

Abstract: A process for preheating glass batch pellets is disclosed, the pellets being preheated by tumbling them into a heated gas stream and subsequently by contact of the pellets, in the form of a moving bed, with hot gases from the furnace in which the preheated pellets are melted to form molten glass from which fibers are formed.