Abstract: A sound attenuating composition for use as a molded-in backer stock between a brake backer plate and the wear stock of a brake shoe comprising approximately in percent by volume:non-fibrous organic components=15-40%fiber reinforcement=20-50%inorganic components=15-50%phenolic resin=5-10%.

Abstract: Small amounts of ethoxylated (propoxylated propylene glycol) utilized as a surfactant/emulsifier for polyolisocyanate reaction systems for producing rigid foams that can produce at least 80% closed cell formation where the surfactant does not produce undesirable reaction products with the isocyanate and has an HLB less than 4.

Abstract: A continuous tube T is formed by spirally-winding an extruded thermoplastic ribbon R having mating edges which are joined together to form a spiral seam and having at least one reinforcing rib 3 which, when in its spiral wrapped form, projects radially out from the tube. At predetermined lengths, the tube is cut and at the same time the outer surfaces of the tube on each side of the cut are shaped to facilitate handling and interconnecting of pipe section 1 thus formed. At least one end of the pipe has an annular groove 6 at a uniform distance from that end. This groove is formed by cutting a path through each of the radially extending reinforcing ribs intersecting its annular path. An elastomeric O-ring 8 engages the outer surface of the pipe and the axial movement of the O-ring is restrained by the walls of the groove formed by the radially extending reinforcing ribs.

Abstract: A fiberizing bushing having a plurality of cooling tube alignment members spaced from the tip plate of the bushing wherein only a small portion of the space is filled with a refractory cement.

Abstract: A railroad brake shoe composition free of fiber reinforcement comprising, in percent by weight:Phenolic Resin Binder: 1-15%Carbonaceous Component: 30-60%Organic Component: 15-30%Inorganic Component: 5-35%Friction Modifiers: 1-15%Additives: 1-7%.

Abstract: An electric melting furnace is provided for optimally melting and mixing a non-homogeneous material. The melting furnace includes a vessel having its top portion open to the environment. Three electrodes are supported above the furnace. Each of the electrodes includes a tip for insertion into the material contained in the vessel. The vessel further includes an outlet formed in the bottom wall of the vessel to discharge the material after it has been melted and optimally mixed. Each of the three electrode tips has a generally round configuration. During the melting operation, the three electrode tips are laterally spaced from each other and are positioned in the vessel to be surrounded by molten material but above the bottom wall outlet. Optimum melting and then optimum mixing of the material occurs at selected horizontal spacings of the electrode tips and at selected electrode tip immersions in the molten material.

Abstract: A thermally efficient process for the expansion of perlite ore is described. The inlet port and burner of a perlite expansion chamber (preferably a vertical expander) are enclosed such that no ambient air can enter the chamber. Air and fuel are metered to the burner with the amount of air being controlled such that the fuel/air premix contains at least enough air to start and maintain minimum combustion, but not enough to provide stoichiometric combustion. At a point immediately above the burner, additional air is metered into an insulated enclosure surrounding the expansion chamber where it is preheated by the heat passing through the chamber walls. This preheated additional air is then circulated back to the burner where it provides the remainder of the air needed for combustion, normally full combustion.

Abstract: Disclosed is a vehicle exhaust system containing a three-way catalytic converter. An insulated flexible duct connects the outlet of the engine exhaust manifold with the inlet of the three-way catalytic converter to retain the exhaust engine gases at a temperature greater than the ignition temperature of the three-way catalyst in the catalytic converter. The insulated flexible duct is preferably made of an inner flexible metal conduit surrounded by fibrous insulation which in turn is surrounded on the outside by a second flexible metal conduit. The system is economical, contains no active elements which would require maintenance or could get out of order, is adaptable to motor vehicles of all types (especially automobiles, light trucks and vans) including those powered by either gasoline and diesel engines and entirely eliminates the need for expensive and complicated light-off catalysts in the system.

Abstract: This invention relates to a burner apparatus (10) suitable for use in the flame attenuation of glass filaments. The flame attenuation burners of the prior art are subject to deleterious deposits of glass that have not been properly attenuated by the burner apparatus. These deposits usually form adjacent to the outlet opening (20) in the refractory material constituting the combustion chamber of the burner apparatus (10). In use, these deposits are removed by a mechanical process which tends to cause damage to the refractory material (12) of the burner apparatus (10). The present invention incorporates a metallic protector or a plate (22) having a discharge passageway (26) having an area slightly greater than the area of the outlet opening (20) and provides a means to protect the burner refractory material (12) from damage during mechanical removal of any glass deposits.

Abstract: A method of deep embossing of sheet material, generally metal, is disclosed. A small scale relief pattern is first embossed across the entire sheet and thereafter a deep embossment of spaced-apart protuberances is imparted to the sheet. Both patterns in combination produce a sheet useful for reflective thermal insulation without the risk of significantly puncturing the sheet.

Abstract: The present invention relates to a method and apparatus for the production of fibrous insulation, especially relatively thick fibrous insulation. Previously some relatively thick insulation has been produced through lamination techniques using a plurality of insulation layers, which possibly included the use of a continuous fibrous hinge as an alignment aid during lamination. However, proper alignment using a continuous hinge is difficult and leaves an objectionable bulge of fibrous material. The present invention eliminates the fibrous bulge of the prior art and provides a more accurate means by which to substantially accurately align the layers of fibrous insulation.

Abstract: Refractory fiber blanket blocks for electric furnaces having electrical heating elements mounted therewith by supports provide substantially improved insulation capabilities for electric furnaces when attached to the furnace walls. The support elements are in the form of holder members for receiving and support heating elements of the electric furnace and an arcuate spearing member which is capable of insertion into the insulative block at any desired location on an inner surface or hot face without requiring any anchoring structure for heating element support. The arcuate spearing member may take several forms and supports the heating element, engaging only the fiber blanket without anchoring structure for support.

Abstract: A thermal insulation device is described comprising a modular or block insulation composed of at least two layers of serpentine folded fibrous insulating blankets with the layers of blankets being secured by means of extended folds of the hot face layer being interengaged with folds of the cold face layer, with the cold face layer then being separately secured to attachment means for mounting the block on the wall, ceiling, door or other surface of a furnace, kiln or like structure. The layers of fiber are commonly composed of fibers of different compositions, with the more thermally resistant fiber comprising the outer or hot face layer and the less thermally resistant composition comprising the inner or cold face layer.

Abstract: An oval cooling tube for the central portion of a fiberizing bushing having a plurality of parallel cooling fins attached to the sides thereof.

Abstract: A process for the filtration of biopolymer solutions is described, comprising contacting a biopolymer solution with an adsorbent material having a pH in the range of 8.5 to 10.0, preferably for a period of about 15 minutes. Synthetic calcium silicate and magnesium oxide are the preferred contacting materials.

Abstract: A cured elastomeric film coating, on the surface of a cementitious article, prepared from the application of an aqueous dispersion of colloidal silica and an anionically stabilized hydroxylated polydiorganosiloxane is improved in water impermeability, adhesion to the surface of the article and gains abrasion resistance when the cured film coating is allowed to stand in open air for approximately four weeks prior to use.

Abstract: The disclosure relates to the field of composition shingles and in particular the types of shingle known as strip or tab shingles. Heretofore shingles having nonuniform random or jagged butt edges have relied on locating indicia on the upper covered portions of the leading and trailing edges thereof, or on the upper edge of the overall shingle, to aid in positioning these shingles relative to one another on a roof deck. Tab shingles have been able to eliminate at least some of the locating indicia in these areas by relying on uniformly sized and positioned slot cutouts to locate the uniform butt edges of the overlapping shingle relative to the shingle being overlapped. The present shingle includes at least one slot dividing the butt edge into two tabs and a knife slit in one of the tabs. The lower edge of the tabs corresponding to a portion of the butt edge of the shingle include specifically shaped locating edges.

Abstract: A four-ply handled carton for packaging a plurality of cans or bottles such as beer or soft drinks or the like is disclosed. The four-ply handle is formed by the use of three top handle panel sections used in conjunction with a fourth top handle panel section which is formed partially out of two of the top handle panel sections. The four-ply construction permits added strength to be incorporated into the top section of the carton in the vicinity of the normal handle openings used with a carton such as is disclosed in the subject application.