Abstract: A low profile heat sealing iron for use in applying heat activatable tape in areas of very limited access, such as the sealing of periodic joints in air duct is disclosed. The low profile sealing iron requires only a few inches or less of clearance and has a tape guiding means that feeds the tape to the proper location for heat sealing as the iron is slid along the surface of the member on which the tape is being applied. Preferably, the iron has a handle of adjustable length which permits the sealing iron to be used on ducts measuring six to eight feet or more when the handle is extended, but having a handle only about three feet long or less for easy carrying and handling at other times. A method of using the low profile sealing iron to seal joints in air ducts is also disclosed.

Abstract: The present invention relates to apparatus for forming a series of shingles from two shingle members. In the past such apparatus has required an inordinate number of hand operations and warehousing of such shingle members. These hand operations and warehousing functions have resulted in a substantial number of non-conforming shingles, which must be rejected, and also causing other problems which affect the overall productivity of such prior art apparatus. The present invention anticipates forming from stock material a complete set of such shingle members, maintaining the shingle members in a set in a predetermined positional relationship throughout the manufacturing operation up to and including the formation of stacks of shingles formed thereby. When such a set of shingle members includes a pair of overlay portions formed of interdigitated tabs, the present invention permits these tabs to be defined to form two styles of shingles.

Abstract: Compositions and papers made therefrom useful as separator materials in starved electrolyte lead/acid batteries are described. The compositions comprise a mixture of 30% to 80% by weight of perlite and 20% to 70% by weight of glass fibers. The glass fibers have diameters in the range of from 0.3 to 1.0 micrometers while the perlite has particle sizes in the range of from about 3 to about 100 micrometers.

Abstract: A bell and spigot pipe joint including a bell end having a locked in sealing gasket and a thickened cross-sectional configuration is disclosed herein. A method and an assembly for making the bell end with its thickened cross-sectional configuration and with the sealing gasket locked in place are also disclosed herein.

Abstract: A web of jacketing material is unwound from a reservoir thereof and conveyed at constant speed. A double sided, pressure-sensitive adhesive strip, having one side protected by a removable sheet covering, conveyed in a direction normal to that of the jacketing material, is cut to predetermined lengths, positioned subjacent to and then applied across the width of the jacketing material at predetermined intervals. The jacketing material is sheared into sections by making cuts across the material along the middle of the adhesive strip and at a line midway between adhesive strips.

Abstract: Waste water effluent from online production machinery and/or clean-off water from shut-down machinery is deposited in a settling tank in which the solids settle out. Water, relatively clear of the solids, is returned to the production plant. A slurry containing a high concentration of these solids is, depending on the percentage of solids, either returned to the production machinery via a slurry tank or returned to the settling tank for further concentration. The degree of concentration of solids in the slurry tank is carefully controlled in order to permit the addition of these otherwise wasted solids to the virgin asbestos-cement slurry in the various production machineries. This addition of the otherwise wasted solids is carefully monitored at each of the production machinery installations in order to provide proper quality control of the product produced thereby.

Abstract: Apparatus is described for the formation of thermal insulation blocks from rolls of fibrous blankets. The apparatus comprises folding means to make alternating transverse folds in the blanket, insertion means to insert block supporting members (pronged beams) into and through folds of the block, and sequencing means to control the location of beam insertion according to a predetermined pattern.

Abstract: A polyurethane foam composition is disclosed which has low smoke generation characteristics (i.e., a rating of less than 50 in the ASTM E-84 Tunnel Test). The composition comprises 80-100 parts by weight of poly(trichloro-oxybutylene) carbohydrate adduct, 0-20 parts by weight of an amine-based polyol, 80-155 parts by weight of a polyalkylene polyphenyl isocyanate, 10-50 parts by weight of a fluorcarbon foaming agent, 0.3-3.0 parts by weight of a surfactant, and 0.005-4.0 parts of a catalyst. The foam finds use as a thermal insulation, particularly pipe insulation.

Abstract: A grounding arrangement is disclosed for microelectronic control of operating devices such as solenoid operated sprinkler valves in an a-c sprinkler system wherein one a-c power line connecting the several valve solenoids is earth-grounded and d-c microelectronic control circuits use the voltage level of the non-grounded a-c power line as a common voltage reference to operate switch means which interruptively supply a-c power to the valve solenoids.

Abstract: A method of preparation of catalyst supports as disclosed, as well as supports made by the method. Natural diatomite, bentonite clay, corn meal and water are mixed, extruded, pelleted, dried and calcined to form porous catalyst support pellets.

Abstract: The wall of one end section of a plastic pipe is post thickened. As disclosed herein, this is accomplished by heating a predetermined length of the end of the pipe to its state of thermal deformability and thereafter causing the pipe to deform within and substantially fill a longitudinally extending, circumferential cavity which is thicker than the originally formed pipe wall. At the same time, a predetermined amount of heat is applied to the cavity from points along the length of and around the circumference of the inner and outer surfaces of the cavity. These points of heat extend from the back end of this cavity towards but stop short of its front end, a predetermined distance from the front end, thus defining a transition zone. This transition zone, among other things, prevents the remaining portion of the pipe from being heated and thus easily distorted during the thickening operation.

Abstract: A foldable basket carrier has front and rear panel assemblies hinged about common edges of center panels wherein one of the cutter panels has transverse dividers cut therefrom for one of the front and rear compartments and the other compartment is divided by transverse divider panels on a separate piece.

Abstract: Method and apparatus for manually raising a palletized load off a generally flat surface and carrying the load such that it may be manually wheeled along said surface.

Abstract: A low beverage soluble iron content filter aid, especially diatomite, is disclosed, as is the method for its production, which comprises contacting the granular filter aid with tannic acid, gallic acid, or mixtures thereof, preferable in aqueous solution. Color control agents such as citric acid may also be present in the solution. The treated filter diatomite is useful in the filtration of vegetable based beverages, especially beer, wine, ale and fruit juices. The invention is also applicable to other filter aids which contain beverage soluble iron, such as perlite.

Abstract: This invention involves a method of making high purity amorphous silica fibers having excellent resistance to devitrification by double leaching sodium silicate type fibers.

Abstract: A method and apparatus for cable support and guidance for use on a high elevation outdoor lighting system in which luminaires, for servicing and inspection, are lowered from an operating position at the top of a pole to a position at the base of the pole. A series of rollers are mounted at the pole top to support and guide the passage of a luminaire, elastomer-jacketed power cable which, during raising and lowering of the luminaires, moves in a path that extends vertically through the interior of the pole, over the roller arrangement and vertically to the luminaires on the exterior of the pole.

Abstract: Gaps or seams between adjacent modular refractory fiber blanket insulation modules are filled by inserting therein strips of refractory fiber blanket. The strips are bent into a U-shape over a blade or plate and then inserted between two spreader members, called lubricators, to overcome the tendency of the blanket in the strip to adhere to the blanket in the module.

Abstract: Alkali resistant glass articles are disclosed comprising glass fibers coated with zinc stearate. The coating will be present as 1 to 50, preferably 3 to 10, percent by weight of the coated fiber. The zinc stearate may be applied as a powder and converted to a coating by heating, or may be applied to the fibers from a water suspension.

Abstract: A web of jacketing material is unwound from a reservoir thereof and conveyed at constant speed. A double sided, pressure-sensitive adhesive strip, having one side protected by a removable sheet covering, conveyed in a direction normal to that of the jacketing material, is cut to predetermined lengths, positioned subjacent to and then applied across the width of the jacketing material at predetermined intervals. The jacketing material is sheared into sections by making cuts across the material along the middle of the adhesive strip and at a line midway between adhesive strips.

Abstract: A pinhole free, asphalt coated fibrous mat is disclosed herein. This mat is made by selecting a fibrous base mat and preparing or otherwise providing a thixotropic mixture including asphalt emulsion and an additive for making the mixture thixotropic. The mixture is coated onto at least one side of the mat and the coated mat is dried, thereby driving off the water from the mixture and at the same time breaking the asphalt emulsion.