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Now showing items 49 - 64 of 154

  • Apparatus for producing perforated film

    A process and apparatus for the manufacture of thermoplastic sheet having elliptical perforations, the process including placing a thermoplastic sheet into contact with a continuously rotating molding element having a series of elliptical holes therein in which the major axis of the elliptical holes is oriented parallel to the direction in which the molding element is rotating, subjecting a surface of the thermoplastic sheet to the action of a fluid pressure differential to cause the material to flow into the elliptical holes of the molding element while maintaining the pressure differential to effect rupturing of the thermoplastic sheet and the formation of elliptical holes in the sheet, and continuously removing the molded portions of the thermoplastic sheet from the molding element. The apparatus for the manufacture of perforated thermoplastic sheet products having elliptical holes therein includes a rotating molding element having a series of elliptical holes therein in which the major axis of the ellipse is oriented parallel to the direction in which the molding element is rotating.
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  • Electrolytic process for potassium hydroxide

    Improved current efficiency is obtained in an electrolytic membrane cell for the production of potassium hydroxide by employing in combination:
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  • Calcium hypochlorite product

    A calcium hypochlorite composition consists essentially of at least 75 percent by weight of Ca(OCl).sub.2, from about 6 to about 14 percent by weight of water, and less than 1.5 percent by weight of an alkali metal chloride. The novel composition provides increased amounts of sanitizing and disinfecting to, for example, water bodies while remaining safe with respect to thermal decomposition. Further, the composition reduces the rate of chlorine evolution during storage.
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  • Rotating joint for extrusion die

    A rotating joint assembly for feeding an extrusion die with two or more thermoplastic layers of a consistent uniformity of distribution including a stationary manifold for receiving two or more thermoplastic streams and conveying the streams to discharge openings in the manifold, and a cylindrical conduit rotatably connected to the manifold, the conduit having intake openings aligned with discharge openings in the stationary base for receiving and conveying thermoplastic streams from the base to an extrusion die and an axial channel aligned with an axial channel in the stationary manifold for receiving and conveying one of the thermoplastic streams to the die.
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  • Treatment of perforated film

    A perforated thermoplastic film with less than ideally shaped tapered capillaries which has an increased liquid flow rate through the tapered capillaries and a method for making such a film. The method includes forming a perforated thermoplastic film having tapered capillaries from a resin into which an effective amount of a polarizable, migrating surfactant has been blended therewith and then treating the perforated thermoplastic film with a corona discharge treatment sufficient to increase the flow rate of liquid through said perforated film and provide a film having a percent run off of from about zero to ten percent.;The perforated film made in accordance with the invention has a much higher
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  • Flawed Families of the Bible: How God\"s Grace Works Through Imperfect Relationships – By David E. Garland and Diana R. Garland

    Simon Oxley  

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  • Chemically polished polycrystalline alumina material

    Increased optical transmission is provided for a body of light transmissive polycrystalline alumina body treated at elevated temperatures with a molten flux composition. A tube of the flux polished material which can be used as the light transmissive envelope for high intensity discharge lamps especially sodium vapor lamps, improves light output from the lamp as the result of increased in-line transmission for the treated envelope member. A method of chemically polishing polycrystalline alumina material in this manner is also disclosed.
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  • Chemically polished polycrystalline alumina material

    Increased optical transmission is provided for a body of light transmissive polycrystalline alumina body treated at elevated temperatures with a molten flux composition. A tube of the flux polished material which can be used as the light transmissive envelope for high intensity discharge lamps especially sodium vapor lamps, improves light output from the lamp as the result of increased in-line transmission for the treated envelope member. A method of chemically polishing polycrystalline alumina material in this manner is also disclosed.
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  • Hamlin Garland\"s Observations on the American Indian, 1895-1905by Lonnie E. Underhill; Daniel F. Littlefield,

    Review by: Bruce A. Glasrud  

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  • Hamlin Garland\"s Observations on the American Indian, 1895-1905by Lonnie E. Underhill; Daniel F. Littlefield,

    Review by: Gerald Stanley  

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  • Hamlin Garland\"s Observations on the American Indian, 1895-1905by Lonnie E. Underhill; Daniel F. Littlefield,

    Review by: Michael Lawson  

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  • Hamlin Garland\"s Observations on the American Indian 1895-1905by Lonnie E. Underhill; Daniel F. Littlefield,

    Review by: Peter Iverson  

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  • Hamlin Garland\"s Observations on the American Indian, 1895-1905by Lonnie E. Underhill; Daniel F. Littlefield,

    Review by: Jerome R. Briggs  

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  • Collector cart

    A collector cart includes a body having an open rear end, which is closed by a canopy pivotally mounted adjacent its front end on the body adjacent its front end. The body has a support pivotally connected to caster wheel supports and a tow bar attached to a riding lawn mower hitch plate. Telescoping chutes connect the mower outlet with a canopy port to fill the cart with debris. When the cart is to be dumped, a first handle is rotated by an operator, who remains on the mower, to initially cause pivoting of a rear portion of a frame of the canopy, which includes a cover on the frame, relative to the body and the remainder of the canopy frame to release a locking connection of the rear portion of the canopy frame to the rear of the body. After the release is accomplished, a second handle is rotated by the operator to release the body from its tow bar with continued rotation of the second handle by the operator causing the body to pivot to a dumping position while the canopy pivots away from the body due to a rope of a fixed length connecting the top front portion of the canopy frame to the mower or a rod of a fixed length connecting the top front portion of the canopy frame to the tow bar.
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  • Portable water clarifier

    A water clarifier for removing sediment comprises four successive compartments in which settling of the sediment is provided and clarified water removed. In three of the compartments, sediment contaminated water travels through a tortuous path to cause the sediment to settle to the bottom, forming a sediment bed in which the water is filtered. Sump means are provided to remove the sediment. Substantially clear water is directed from the third compartment to the bottom of the fourth compartment, pure water is exiting the fourth compartment near the top thereof and at the end of the compartment opposite the end at which the water entered. The clarifier is mounted on an easily transportable vehicle and is capable of treating approximately 150,000 gallons of contaminated water per day in which the water to be treated can be pumped directly from its source and the clarified water leaving the fourth compartment returned, thereby substantially eliminating excessive loss of treated water.
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  • Thermoplastic film stock

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