Abstract: A method of removing boron from gases which comprises passing the gas stream in contact with solid sodium bicarbonate.

Abstract: An assemblage of electrode blocks peripherally supported on the bottom wall of an electric glass-melting furnace, having apertures for positioning electrodes therethrough and having horizontal grooves cut between adjacent vertical sides with a key positioned in the groove to secure the blocks, and on another of the vertical sides, having a ledge parallel and located between the top and bottom of the electrode blocks, such that a plurality of paving blocks can be positioned to retain the electrode blocks against the bottom wall of the furnace.

Abstract: A method and apparatus for producing a mat of continuous glass filaments at increased throughput while maintaining desirable tensile strength characteristics by means of an oscillatable, fluidic distribution system.

Abstract: The apparatus includes a plurality of small rollers disposed in an arcuate, upwardly concave arrangement for rotatably supporting a composite two-batt roll, a large rotating roller for winding up one of the batts while the other is pulled intermittently from the composite roll for use, and a stationary bar engaging the one batt being rewound to prevent the rotating large roller from pulling the one batt from the composite roll independently of the pulling of the other batt.

Abstract: A process for recovering a probertite concentrate from ore in which the major borate mineral is probertite which comprises crushing the ore, desliming at 14 to 20 microns and floating the deslimed ore to recover the concentrate.

Abstract: A method of producing concentrates of colemanite and probertite from mixed low grade ore which involves desliming at different particle sizes for colemanite and probertite recovery.

Abstract: A glass size composition comprising a trimellitic anhydride anhydride-containing unsaturated polyester imparts to glass fibers superior reinforcing characteristics when used to reinforce sheet molding compounds.

Abstract: The disclosure embraces a method of and apparatus for mechanically stripping linear material such as strands or groups of glass filaments or fibers from plastic forming tubes wherein the packages are defective, incomplete, or "break-out" packages. A defective, incomplete or "break-out" package is disposed at a stripping station at which a tube deforming or collapsing member is engaged with a forming tube package to collapse the package so that the strand on the collapsed forming tube is loose or is a loose hank. The collapsed or deformed forming tube is withdrawn from the stripping station and a stripper member is engaged with the loose strand or hank of strand which is stripped from the forming tube as the forming tube is moved away from the stripping station.

Abstract: An annular blower for attenuating fibers comprises an annular manifold and a plurality of slots positioned circumferentially around the blower for the discharge of attenuating gas from the manifold, where the slots have an aspect ratio within the range of from about 35 to about 70.

Abstract: A method and apparatus for producing a mat of continuous glass filaments at increased throughput while maintaining desirable tensile strength characteristics by means of an oscillatable, fluidic distribution system.

Abstract: A method and apparatus for producing a mat of continuous glass filaments at increased throughput while maintaining desirable tensile strength characteristics by means of a fluidic distribution system employing diagonally opposed Coanda effect surfaces.

Abstract: A method and apparatus for sealing a hole in the inner wall of a double wall heat exchanger in which cover means is positioned in biased relationship to the hole and a frame positioned in the opening through which the cover means is inserted against the hole.

Abstract: A method of facilitating the unwinding of a wound body of strand includes encompassing the body in a heat-shrinkable stretch membrane and heating the resulting composite to a temperature greater than the temperature at which the strand is to be wound.

Abstract: A method of depositing a coating consisting essentially of titanium dioxide from an organic solution onto glass in an effort to improve the modulus and temperature resistance of the glass.

Abstract: Apparatus for curing fibrous mineral insulation material comprises an oven, upper and lower conveyor belts for carrying the insulation through the oven, support means for supporting the belts, a supply plenum for directing curing gases through the belts and the insulation material, an exhaust plenum for receiving the curing gases, and a baffle positioned within the oven to define a curing gas flow path from the supply plenum through the belts and the insulation material to the exhaust plenum, the flow path being spaced apart from the support means to prevent contact between the curing gases and the support means.

Abstract: A size for glass fibers is disclosed, the size comprising an oxidized polyolefin, a polymeric film former and an organic acid, preferably terephthalic acid or isophthalic acid.

Abstract: A glass fiber-forming feeder having a bottom wall having a network of internal passageways interconnecting the field of orifices extending therethrough, and a method for producing such bottom walls is disclosed.

Abstract: A method of recovering heat from furnace flue gas which comprises passing the hot gases into contact with high specific heat media and the media into contact successively, with combustion gases and glass batch.

Abstract: Apparatus for producing and collecting continuous glass filaments is provided comprising: feeder means for supplying a plurality of streams of molten glass to be drawn into filaments; means for applying a liquid to said filaments; a rotatable member adapted to wind said filaments in layers therearound and to draw said streams into said filaments; distribution means for supplying a plurality of streams of gas to at least partially dry the filaments wound around said member, said streams being directed into contact with the layers along the length thereof and over a portion of the arcuate periphery of the layers; and collection means for removing the moisture containing air from around the periphery of said layers of filaments, said collection means extending along the length of said layers and over a portion of the arcuate periphery of the layers.

Abstract: A method and apparatus for applying granules to continuously moving strip asphaltic material comprises discharging granules onto tacky strip asphaltic material, continuously removing the non-adhered portion of the granules, sensing the amount of removed granules, and controlling the amount of granules discharged onto the asphaltic material in response to the sensed amount of removed granules.