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: 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: 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 pneumatic valve for controlling the inflation of floatation bladders in ver-deployed underwater recovery apparatus comprises, in one embodiment, an inlet connectable to a source of pressurized air, two small semi-circular flow passages joining the inlet to an outlet which connects to the bladders, a pair of spring-biased control pistons mounted in parallel in the two flow passages and another spring-biased outlet piston in a larger outlet passage positioned between the flow passages and the outlet. Air flow allowed by either of the control pistons impinges on an end of the outlet piston, displacing it from a normally closed to an open position to permit air flow through the larger outlet passage.

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 glass composition having improved working properties and of particular utility for fiberization by the rotary or centrifugal process that does not employ conventional hot gas blast attenuation, into fibers exhibiting improved chemical durability, consisting essentially of: SiO.sub.2 ; CaO; B.sub.2 O.sub.3 ; Na.sub.2 O; Al.sub.2 O.sub.3 ; and ZnO; and small amounts of Fe.sub.2 O.sub.3, TiO.sub.2, K.sub.2 O, MgO and SO.sub.3.

Abstract: In the manufacture of glass fibrous products wherein gaseous streams of fibers are directed through conduits from a generally horizontal direction downwardly in a generally vertical direction towards a moving collection surface, the improvement wherein forming tubes are telescopically associated with downwardly sloping portions of the conduits and supported so that the forming tubes may be positioned at various distances above the collection surface and at various angular orientations relative to the moving collection surface. Also, the shaping of the forming tubes allows additional gaseous streams of fibers to be produced. By selectively manipulating the height and orientation of the forming tubes, the ability to produce a uniform deposition of material onto the moving collection surface is greatly improved. A method and apparatus for the application of binder is also disclosed.

Abstract: An internally pressurizable expansible body is supported by an improved rd mount which minimizes stresses induced in the body due to constraining radial expansion of the body. The mount comprises a plurality of resilient members juxtaposed between the body and a fixed annulus which is capable of carrying axial, transverse and torsional loads imposed upon the body.

Abstract: A method and apparatus for collecting fibrous material, particularly small diameter glass fibers, i.e. within the range of 0.05 to 2.60 microns, from a gaseous medium in an efficient, environmentally sound manner is disclosed herein. The apparatus includes a collection chamber which partially encloses a rotating drum having a perforated peripheral surface and having a fine mesh collection screen superimposed thereover. The drum is positioned in such a manner that the screen intercepts a gaseous stream of fibers, e.g. glass microfibers. A suction force established interiorly of the peripheral surface of the drum draws the gaseous stream through the collection screen in order to thereby continuously collect a layer of fibers upon a portion of the rotating screen. The layer of fibers is removed from the drum and wound on a mandrel at a point outside the collection chamber. In a preferred embodiment of the present invention the drum surface is cleaned of any residual fibers.

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: A mounting assembly for a primary electrode in an open-top electric furnace whereby the primary electrode is supported in a working position and for servicing so that it may be readily moved out of the melt and off to a side of the furnace for convenient access. In addition a fixedly mounted clamp firmly securing the primary electrode in its working position and for transmitting electric power to the electrode is provided.

Abstract: Attempts have been made by the prior art to oscillate a veil of air entrained centrifugally spun fibers back and forth across a moving collecting surface to build a layer of fibers having uniform thickness and density. The present invention accomplishes this objective by oscillating a fiberizing rotor, preferably about an axis that runs through the bottom wall of the spinner.