Abstract: A process and apparatus for making densified glass fiber pellets substantially encapsulated in a polymeric shell from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube, drying the pellets and encapsulating them in a polymeric composition. The resulting pellets exhibit enhanced degradation resistance during bulk storage and handling.

Abstract: This composite building stud combines two metal shapes, inner and outer, with an insulating material to form a composite structural member having excellent acoustical properties. The stud also has an insulating valve (R-value) greater than a similar metal member normally used as a stud in a residential structure. The composite also has a strength comparable to that of a similar steel member normally used as a stud in a residential structure. One shape encompasses the other shape. The composite structural member eliminates any direct metal connections and thus eliminates any thermal shorts that reduce the overall insulating value (R-value) of the composite member.

Abstract: A process and apparatus for making densified glass fiber pellets substantially encapsulated in a polymeric shell from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube, drying the pellets and encapsulating them in a polymeric composition. The resulting pellets exhibit enhanced degradation resistance during bulk storage and handling.

Abstract: A process and apparatus for making densified glass fiber pellets substantially encapsulated in a polymeric shell from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube, drying the pellets and encapsulating them in a polymeric composition. The resulting pellets exhibit enhanced degradation resistance during bulk storage and handling.

Abstract: This composite building stud combines two metal shapes, inner and outer, with an insulating material to form a composite structural member having excellent acoustical properties. The stud also has an insulating valve (R-value) greater than a similar metal member normally used as a stud in a residential structure. The composite also has a strength comparable to that of a similar steel member normally used as a stud in a residential structure. One shape encompasses the other shape. The composite structural member eliminates any direct metal connections and thus eliminates any thermal shorts that reduce the overall insulating value (R-value) of the composite member.

Abstract: This composite building stud combines two metal shapes, inner and outer, with an insulating material to form a composite structural member having an insulating valve (R-value) greater than a similar metal member normally used as a stud in a residential structure. The composite also has a strength comparable to that of a similar steel member normally used as a stud in a residential structure. One shape encompasses the other shape. The composite structural member eliminates any direct metal connections and thus eliminates any thermal shorts that reduce the overall insulating value (R-value) of the composite member. The shapes, inner and outer, with an insulating material form a composite structural member that has an interlocking shape which holds the insulating material in compression and mechanically couples the inner and outer members.

Abstract: A system for making densified glass fiber pellets from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, and densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube for a period of time sufficient to increase their density but insufficient to degrade the fibers to a point where composite articles formed from such pellets have lower tensile or impact strengths than comparable composite articles formed from unpelletized strand segments.

Abstract: A system for making densified glass fiber pellets from chopped segments of multi-filament glass strand is described. The densified pellets may be advantageously produced by hydrating chopped glass strands and then pelletizing them by tumbling in a rotary drum, and densifying the resulting pellets by tumbling in a rotating zig-zag or undulating tube for a period of time sufficient to increase their density but insufficient to degrade the fibers to a point where composite articles formed from such pellets have lower tensile or impact strengths than comparable composite articles formed from unpelletized strand segments.

Abstract: The invention provides an improved apparatus for use in processing wet scrap textile glass fiber into a dry flowable powder. The apparatus includes a unique inlet and outlet structure to prevent clogging during operation. The apparatus also includes a unique discharge unit for ground dry glass fines composed of a pair of rod gratings place proximate the outlet of the apparatus.

Abstract: The improved joule effect glass melt apparatus and method of using the apparatus delivers isothermal glass to a glass forming bushing and reduces the erosion of refractory at high melt temperatures by isolating the refractory from joule effect currents. The glass melt apparatus uses molybdenum liners located on the side walls of the molten glass receptacle to receive joule effect current and provide a uniform temperature distribution through the glass. A molybdenum flow block and molybdenum heat sink located in the flow block complete the heat distribution in the molten glass, achieving an essentially isothermal cross section molten glass upon arrival at the glass forming apparatus or bushing.

Abstract: A method and apparatus for preheating particulate glass batch comprises a rotatable drum for mixing batch with heat transfer media in a heat transfer relationship, means for directing the heated batch from the container to a glass melting furnace, means for venting gases and gas-borne particulate matter from the drum, means for separating a selected portion of the particulate matter from the vented gases, and means for directing the separated particulate matter into the glass melting furnace.

Abstract: Apparatus and method for the heat processing of granular materials by the counterflow of the granular material and preheated particulate heat exchange media through a processing drum rotatable about an inclined axis. The hot media is imtimately mixed with the granular material internally of the drum to heat the material and to cool the media. Various arrangements are disclosed to recover the heat imparted to the material, or to utilize the media for successive heating operations, or to recover waste heat from other related heat processing operations or to utilize the material as preheated by the media.

Abstract: An apparatus for changing bushings in a glass melting furnace is disclosed. A support attached to the furnace holds the bushings beneath an opening in the forehearth. A replacement bushing is placed in the framework, translated next to the operating bushing, brought to operating thermal condition and then both bushings are translated until the replacement bushing is beneath the opening in forehearth. This eliminates the need to freeze the molten glass within the bushing.

Abstract: Apparatus and method for distributing particulate material substantially evenly over a square receiving area are disclosed, the apparatus comprising a rotatable trough having a discharge slot positioned along its length.

Abstract: Heat transfer media is heated by passing the media downwardly through a chamber, introducing hot gases near the top of the chamber, introducing hot gases near the bottom of the chamber, and exhausting hot gases from a hot gas outlet positioned near the middle of the chamber.

Abstract: A method of removing coatings from scrap glass is disclosed. The scrap glass is milled in the presence of particulate batch, preheated and fed to a glass melting furnace. The particulate batch aids in the milling of the scrap glass. The process removes the coatings from the scrap during preheating and provides clean material for melting.

Abstract: Apparatus and method for the heat processing of granular materials by the counterflow of the granular material and preheated particulate heat exchange media through a processing drum rotatable about an inclined axis. The hot media is intimately mixed with the granular material internally of the drum to heat the material and to cool the media. Various arrangements are disclosed to recover the heat imparted to the material, or to utilize the media for successive heating operations, or to recover waste heat from other related heat processing operations or to utilize the material as preheated by the media.

Abstract: An apparatus for adjustably supporting a vertical electrode for an arc-type furnace. The apparatus includes an upper stationary electrode clamping structure and a lower adjustable electrode clamping structure suspended from the upper structure by adjustment screws. The two clamping structures are mounted on a carriage movable linearly into and out of registry with the furnace to accommodate maintenance and repair. Each clamping structure comprises an arcuate electrical contact and wedge-type slips engaging the periphery of the electrode in opposition to the electrical contact, the slips being spring-biased into electrode engagement and cam actuated from electrode engagement. The cams are actuated by a common shaft extending between the two clamping structures, so that the electrode is released from one clamping structure when engaged by the other clamping structure.

Abstract: A process for cleaning and incinerating the exhaust gases from a manufacturing process or a curing oven is disclosed. The invention uses heat transfer media and additional hot gases to scrub organic or condensate from the gases. The gases typically are from the curing of binder compositions or phenolic resins. The binders generally have been applied to a collected mat of glass fibers.

Abstract: The heating media feeder includes a hollow conical frustum facing an inlet in the drum end plate, an aperture in the periphery of the conical frustum, a baffle outside the conical frustum aligned with a leading edge of the aperture therein, a circular plate adjacent a smaller end of the conical frustum, an aperture in the circular plate forwardly offset from that in the conical frustum, and a generally V-shaped chute on an opposite side of the circular plate aligned with the aperture therein.