Abstract: A one-package thermally stable hot melt pressure-sensitive moisture-cure polyurethane composition that can be extruded at elevated temperatures to form a hot melt glue line with very high green strength that can moisture-cure to a strong urethane adhesive bond.

Abstract: The programmable function controller herein may be used in conjunction with a data processor and a waveform storage memory together with digital-to-analog conversion means for providing an analog waveform based on stored digital representations of the waveform in the memory. The function controller includes a plurality of registers which are initially preloaded prior to waveform generation with programmed parameter control words respecting the manner in which the waveform is to be generated. These control words are used to control logic circuitry for selecting a clock to be used by the controller for interrogating the memory to obtain the data words therefrom in a sequence representing data points on the waveform to be generated. The controller then outputs these data words to a digital-to-analog converter for providing the analog version of the waveform.

Abstract: A one-package thermally stable hot melt pressure-sensitive moisture-cure polyurethane composition that can be extruded at elevated temperatures to form a hot melt glue line with very high green strength that can moisture-cure to a strong urethane adhesive bond.

Abstract: The digital interpolator herein selectively provides linear interpolation between successive digital data words in a stream of such data words. The data words each contain a control bit together with first and second multi-bit fields with the control bit having a first or second level respectively designating whether or not interpolation is to take place through that data word. The first bit field contains differential data, representing the value between successive data words, only when the control bit is at a first level. The second bit field contains the interpolation interval to be effective when the control bit is at the second level. When no interpolation through the assigned data point is desired, the control bit is at the first level and the circuitry responds to provide an output signal having a digital value corresponding with a first data word to which there is added the differential data from the first bit field to obtain the next output signal.

Abstract: The waveform generator herein may be used to generate an analog waveform selected from a plurality of stored digital representations of waveforms. These are stored in a memory within a processor section of the system. At least one waveform generator section communicates with the processor section and receives parameter control words therefrom respecting the manner in which a waveform is to be generated. Each such generator section includes a function generator controller, a temporary waveform memory for storing a selected one of the waveforms and a digital-to-analog converter. After receiving the parameter control words from the processor section, the function generator controller operates independently of the processor section for reading the data words stored in the temporary memory and generating the selected analog waveform.

Abstract: A continuous process and apparatus for converting non-ferrous mattes is disclosed. The process comprises feeding continuously or intermittently a liquid matte into a furnace while continuously blowing air, oxygen or oxygen-enriched air into the melt contained in the furnace at a rate in balance with the rate of liquid feed matte and the desired degree of oxidation, introducing flux into the furnace at a rate in balance with the feed matte and air, oxygen or oxygen-enriched air, and removing slag from the top of the melt and a refined product from beneath the melt while continuously blowing air, oxygen or oxygen-enriched air through the melt.

Abstract: A continuous process and apparatus for converting non-ferrous mattes is disclosed. The process comprises feeding continuously or intermittently a liquid matte into a furnace while continuously blowing air, oxygen or oxygen-enriched air into the melt contained in the furnace at a rate in balance with the rate of liquid feed matte and the desired degree of oxidation, introducing flux into the furnace at a rate in balance with the feed matte and air, oxygen or oxygen-enriched air, and removing slag from the top of the melt and a refined product from beneath the melt while continuously blowing air, oxygen or oxygen-enriched air through the melt.

Abstract: A releasable coupling for an articulated vehicle of the type having a tractor and a trailer comprises a brake system and locating members for preventing or inhibiting jack-knifing of the articulated vehicle, the locating members comprising two or more pairs of members one of each pair adapted to being mounted on the tractor and the other of each pair adapted to being mounted on the trailer and arranged so that they mate when the tractor is connected to the trailer, each pair being arranged a sufficient distance on each side of the longitudinal center line of the articulated vehicle so as to result in reactive moments of force about the direction of travel that will resist any tendency of the trailer to overturn when cornering or traveling on uneven roads at operating speeds.

Abstract: A blast hole liner comprised of a single length of waterproof, flattened, longitudinal tubing having an open upper end and a lower end portion terminating in a bottom edge folded about its midpoint with resulting edge halves joined together to define an upwardly open weight pocket. The liner is provided with a transverse seal above the pocket. The latter seal may be located closely adjacent a horizontal crease in the tubing formed by doubling the same back upon itself. In one embodiment, manufacture of the liner from a length of tubing requires no further cutting or slitting of the tube. In another embodiment, a second length of tubing, substantially congruent with the first-mentioned tubing length, may be provided to improve the strength and waterproof nature of the liner and to protect the innermost length of tubing from becoming torn or punctured.