Abstract: A live presentation utilizing quality visual or audio supporting material may be given at at least one remote location from an originating location by use of standard voice grade telephone serivce by preparing a package of supporting material and transmitting such supporting material in advance of the presentation to the remote location. Such transmission may be, for example, by mail, courier, or nonrealtime electronic transmission.

Abstract: An elongate roller, movable back and forth transversely across the bed of a truck from one side thereof, has rolled thereon a cover sheet which is unrolled and rerolled during the back and forth movement to cover a load in the truck bed. Levers pivotally mounted at opposite ends of the truck carry the roller and are moved by hydraulic power cylinders controlled from inside the cab of the truck. A special chain and sprocket arrangement drives the roller, and a special elastic drawcord and backup plate arrangement at opposite ends of the truck bed secures and seals the cover sheet at such opposite ends of the truck bed.

Abstract: The conventional process for forming a simulated ornamental stone is improved by using alumina trihydrate as a filler for a polyester or the like resin with catalyzer for depth-simulation, the same being applied as a substantially integral translucent layer of variegated depth substantially coextensive with the superficial veining surface of the product and being backed by a solidly colored material which may include a solidly colored gel coat between the depth-simulating material and back-up matrix material.

Abstract: An ordinarily uncovered recess of a deeply recessed drive axle wheel of a heavy road vehicle is covered by a hub cap secured in place by nuts applied to externally threaded ends of respective extenders which pass through accommodating holes in the hub cap. The extenders are secured in place by having their opposite ends internally threaded and screwed onto the free ends of the usual lug bolts that extend beyond the usual lug nuts adjacent to the bottom of the recess. In this way, auxiliary valve stems can be mounted in receiving openings in the hub cap, so as to face externally of the wheel for convenient testing of tire air pressure and convenient filling with air when required, and uniformity of undercarriage appearance for the vehicle is achieved. The invention includes the method of mounting and a kit of parts required for carrying out the method. It is preferred that the hub cap securement nuts applied to the extenders be respective pairs of interlocking nuts made of a nylon type of plastic.

Abstract: A solid fuel burner especially useful in a system for pulverizing and burning solid fuel, such as coal or other fossil fuel, that is characterized by a possible turndown ratio of up to at least fifteen to one. The burner includes a valved firing nozzle having a firing conduit with firing orifice and internal turbulating means for a mixture of primary air and pulverized solid fuel, and a controlled secondary air supply. A movable valve element, preferably in the form of a double-taper-ended diffuser positioned downstream from the firing orifice, controls the outflow of a turbulent stream of the mxied primary air and fuel from the firing orifice into an ignition chamber and controls flame shape.

Abstract: Readily disassembled and reassembled apparatus for extruding composite food products, especially simulated slab bacon, includes an extrusion assembly comprising a die having a housing within which extend a plurality of individual die conduits from a front wall provided with openings leading into the die conduits. The space surrounding the die conduits within the housing form die passages interleaved with the die conduits. Means are provided for extruding a food material through the front wall openings and through the die conduits into a convergent discharge conduit removably attached to the housing. Separable supply conduits connect a pressure source of supply of a different food material with the housing at opposite sides thereof as well as between such opposite sides.

Abstract: In an attachment device for use in pairs to mount a face-protective shield, such as a welding helmet, for lifting and lowering pivotal movement on a headgear, the provision of two separate pieces adapted for interfitted engagement relative to each other at longitudinally adjusted positions determined by the requirements of the particular make of headgear and face shield concerned. One of the pieces has a tubular boss projecting therefrom, while the other piece has an elongate slot through which the boss extends. Interengaging means, such as respective series of saw-like teeth, are provided on confronting faces of the two pieces, whereby the positions of the two pieces relative to each other can be adjusted to place the boss as may be required by the position of a boss-receiving opening in a side wall of a particular make of face-protective shield.

Abstract: Particulate cellulose insulation material is rendered fire retardant by a wet process requiring considerably less fire retardant composition than normally employed in the usual dry processes or in wet processes proposed heretofore, and yielding a product with significantly enhanced insulating properties. Impregnation of a cellulosic insulating material, such as waste paper in finely divided form, with an aqueous solution of a non-hygroscopic fire retardant composition, such as boric acid, a borate, or the composition of U.S. Pat. No. 3,983,040, is carried out under conditions whereby a minimum amount of water is first utilized for the purpose of dissolving the fire retardant composition and to serve as a carrier in distributing it throughout the cellulosic insulating material. For example, only from about 14 to 45% by weight of add-on water is utilized in the presence of from about 5 to 10% by weight of the fire retardant composition and preferably in the presence of a surfactant.

Abstract: An irrigation system includes an elongate pipe having a plurality of water discharge ports spaced along its length. Each port is individually adjustable, such as by means of a collar about the pipe, to deliver water in a straight stream, spray, trickle, drip, or to be closed completely so that no water is delivered through a particular port. The system is preferably made up of a number of individual lengths of pipe adapted to be easily joined together to give the desired total length.

Abstract: A prefabricated gazebo having a floor assembly formed from a plurality of lengths of a structural supporting material secured together in polygonal formation and provided with joist members and joist support members secured to the polygon formation to support a deck material. A wall assembly is formed from a plurality of wall sections, each of which may be constructed in an arch formation, one such section being secured to each of the plurality of lengths of structural supporting material. Each wall section is also secured to the two adjacent wall sections. One wall section is adapted to serve as an entrance to the gazebo. A roof assembly is formed from a plurality of identical roof sections, one such section being secured to the center of the arch of each wall section, and also secured to the two adjacent roof sections.

Abstract: Much better control of the grind of a rotary mill and much more uniformity of grind of the mill is achieved by better control of air flow through the mill, provided by making the milled product collecting pan of the mill air-tight and regulating the amount of in allowed to escape from the pan. The apparatus of the invention includes a housing in which are mounted two discs in spaced, confronting axial alignment, each disc having extending therefrom toward the other disc concentric rows of teeth. The rows of teeth overlap so that alternating rows of radially spaced, interposed teeth are formed. One of the discs is adapted to be rotated in relation to the other disc and grain to be milled, along with any air flow through the mill, is introduced through an inlet to the area between the discs inwardly of the innermost rows of teeth. An outlet into a substantially air tight collecting pan is provided for the milled material after it passes radially outwardly through the interposed row of teeth.

Abstract: A method of pyrometallurgical refining of crude silver to remove base metal impurities, particularly bismuth, by treatment with sulfer hexafluoride gas. The crude silver is melted and maintained at about 1000.degree. C. while it is treated concurrently with sulfur hexafluoride and an oxidizing gas, such as air. Base metal fluorides are formed and are removed from the silver, after which the molten bath is treated with a reducing agent, such as hydrogen gas.

Abstract: A multiple adapter device is provided for use with a variety of tubular connectors. A body member adapted for connection to a catheter or container is provided with an adapter passage therethrough of a diameter convenient for use with relatively large connectors likely to be encountered during use of the catheter or container to which the device is attached. A flexible strap is secured on one end to the body member and extends outwardly. An adapter member having an adapter passage therethrough and having an outside diameter corresponding to the body member passage is secured to the strap a sufficient distance from the body member to permit the adapter member to be inserted into the body member passage by folding the strap. The adapter member passage has a diameter convenient for use with smaller connectors likely to be encountered during use of the catheter or container to which the device is attached.

Abstract: A method and apparatus for processing raw, dry, corn kernals into a milled masa product for use in making corn chips, tortilla chips, and similar products, comprises the steps of heating and soaking such corn kernels, breaking the hulls of the soaked corn kernals, and forcing entirely the hull-broken, corn kernals through a plate perforated as a sieve, the perforations of the plate being very small relative to the size of the corn kernals. Preferably, the moisture content of the masa product is adjusted to about 50% by weight. The perforated plate is advantageously a closed-ended tube, within which a screw conveyor operates to transport the mass of hull-broken corn kernals through and along the tube to its midpoint from feed locations adjacent to the closed ends of the tube while forcing the mass through the perforations of the tube.