Abstract: A bid control circuit is incorporated into a device on a time-shared data bus to control the sequence by which that device bids for the use of the bus. In one preferred embodiment, the bid control circuit includes a means for determining if a bid from that device to use the bus is the highest priority bid being made, a means for storing all bids other than its own bid upon the determination that its bid has the highest priority and that other devices were bidding for the bus and lost, and a means for inhibiting its own future bids until those devices having their bids stored have obtained the use of the bus subsequent to the storing operation.

Abstract: A hair treating device includes a pliable liquid impermeable sheet adapted to be placed in underlying relation to selected strands of hair during application of a hair treating substance to the selected strands and is of sufficient lateral width to extend laterally outwardly from opposite sides of the selected strands. In one embodiment, the pliable sheet is of sufficient length to enable it to be folded upon itself and substantially overlie the selected hair strands. The pliable sheet has discrete domains of alternating magnetic polarity defined therein operative to releasably maintain the folded layers in juxtaposed relation through magnetic attraction therebetween and establish a liquid seal about substantially the full periphery of the treated hair strands.

Abstract: A method of preparing a spun yarn for use in a fine gauge wrap knitting machine having the following steps: (a) spinning polyester stable fibers having a denier of less than 2 and having a staple length in a range of about 1.5 to about 2.0 inches, (b) twisting the yarn in a range of 24 to 36 twists per inch, (c) waxing and steaming the yarn, and (d) warping the yarn in an environment having a humidity in a range of 65% to 70% and having a temperature in a range of 70.degree. to 72.degree. Fahrenheit.

Abstract: A process for producing a composite material comprising a base having a nickel surface and a gold layer metallurgically bonded to the nickel of the base and having sufficient nickel to increase the hardness of the gold layer but insufficient to significantly destroy the distinctive color of the gold layer comprises depositing the gold layer on the nickel and annealing the composite structure to provide the metallurgical bond between the nickel and gold and to interdiffuse said metals, and the composite structure obtained by said process. The composite material is particularly useful as a coinage structure.

Abstract: An optical recording element on which information can be recorded and read directly afterwards by means of laser light in which the element comprises, as a recording medium, an effective amount of one or more dyes of the formula: ##STR1## in which: m+p=2,n is 0 or 1,s is 0 or 1,Z.sup.1 and Z.sup.2 independently represent the non-metallic atoms necessary to complete a heterocyclic nucleus of the type present in cyanine dyes,R.sup.1 and R.sup.2 independently represent an alkyl or substituted alkyl, alkenyl, substituted alkenyl or aralkyl group of up to 20 carbon atoms,R.sup.3 and R.sup.4 independently represent a hydrogen atom or an alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkoxy or substituted alkoxy group of up to 10 carbon atoms,R.sup.5, R.sup.6, R.sup.7 and R.sup.8, which together may not contain more than 12 carbon atoms, independently represent a hydrogen atom, an alkyl, substituted alkyl, alkenyl, substituted alkenyl, aryl or alkaryl group, orone of R.sup.5 and R.sup.

Abstract: An apparatus for positioning and supporting a shroud tube in a metal teeming operation includes a boom assembly having one end pivotally mounted on a rigid structure for movement about a vertical axis and is articulated intermediate its ends to permit universal movement of its other end in a horizontal plane, and an elongated shroud tube support arm is mounted intermediate its ends on the universally movable end of the boom assembly for movement therewith, for limited pivotal movement about a horizontal axis, and for limited rotational movement about its longitudinal axis. A bifurcated yoke at one end of the support arm engages and supports a shroud tube, and power drive is provided at the other end of the support arm for rotating the support arm about its longitudinal axis.

Abstract: A full duplex link for sending and receiving digital voice/data signals over a line pair and which incorporates a sample and hold circuit in the receiving portion of the link which is triggered by each change of state of the transmitted signal from the link so that transients resulting from such transmitted signals will not interfere with signals received by the link over the line pair.

Abstract: Eye protection means for use in combination with eye wear, such as safety glasses, having a brow guard in the form of a surface extending from the upper portion of the eye wear to a portion closely adjacent to the brow of the wearer. In one embodiment of the invention the eye protection means comprises magnetic dust collecting means formed of a ferromagnetic material for securement to the brow guard and arranged so that air-born dust particles falling thereon become trapped thereon, thereby decreasing the potential for entering the eye of the wearer. In another embodiment the dust collecting means comprises at least one layer of material arranged to be secured to the brow guard of the safety glasses and having an adhesive upper surface arranged to trap air-born dust particles falling thereon so as to decrease the potential for such particles entering the eye of the wearer.

Abstract: The invention refers to means of shoring trench excavation.It provides a trench shoring apparatus which supports the walls of the trench and can travel by its own power or be pulled behind an excavator and consists of panels which line the walls of the trench and have braces across the trench between them, each panel comprising a frame that supports a vertical tread endless crawler track which travels longitudinally around the frame, the panel being enclosed to prevent the entry of earth, and of a construction and size suitable for being easily joined to others and cross braced to form an assembly for various depths of trenches.The apparatus may be used for underwater pipelaying.

Abstract: A method and apparatus for producing a vessel-equivalent prosthesis is described. A contractile agent such as fibroblast cells, smooth muscle cells or platelets is incorporated into a collagen lattice and contracts the lattice axially around an inner core. After the structure has set, additional layers may be formed in an ordered manner depending on the intended function of the prosthesis. Alternatively, all the layers may be formed concurrently. A plastic mesh sleeve is sandwiched between layers or embedded within the smooth muscle cell layer to reinforce the structure and provide sufficient elasticity to withstand intravascular pressure.

Abstract: An optical recording element in which information can be recorded and read directly afterwards by means of laser light, comprises a substrate having on at least one side a recording layer including an effective amount of one or more compounds selected from a certain class of trimethine and longer chain aryl polymethine dyes associated with specific counter-ions.

Abstract: A traveling trench shoring device consisting of longitudinal panels which cover the walls of the trench completely and are supported by movable frames, the panels being moved forward by jacks connecting the panels to the frames which are held in place by the friction between the walls and other panels, the device comprising a working chamber and a separate unconnected sloping approach section, and panels which can be raised individually and have cover plates on their lower outer edges and ends to prevent entry of earth between them and panels below and behind them, the connections for the jacks on the frames also being movable vertically and individually.

Abstract: A device having a light emitter coupled to direct light to a portion of a photodetector to provide Built-In Test Equipment (BITE) capability for an optical sensor. A light emitting diode and a photodiode are mounted side by side on the upper surface of a conventional header with suitable electrical connections bonded thereto. A prismatic light bridge member overlies the light emitting diode and extends to cover a portion of one corner of the photodetector. This member serves as a light conduit, directing virtually all of the light from the emitter to the detector by virtue of the near total internal reflection of the surfaces of the light conduit member. An outer enclosure having a transparent glass window serves to seal and protect the respective elements while permitting external radiation to reach the photodetector.Alternative embodiments provide for coupling of light from a single emitter or a plurality of emitters to a single associated photodetector.

Abstract: A trash dumping apparatus adapted to be mounted on a trash pick-up truck alongside the open-top, trash-receiving body thereof operative automatically by unique mechano-hydraulic means to pick-up trash containers and to dump the contents thereof in the body, the mechano-hydraulic means being strong and rugged in construction, durable and relatively trouble free in use to minimize maintenance cost and consequential down time of the vehicle otherwise necessary for servicing and repair of the equipment.

Abstract: A temperature sensing transducer has a mechanically vibrating member whose rigidity varies with temperature, changing the resonant frequency. An output signal is generated having a frequency controlled by the vibrating member. The rigidity is caused to vary with temperature by making the vibrating member from a material whose modulus of elasticity is sensitive to temperature changes in the desired measurement range. Also by making the vibrating member of a bimetal shaped as a frusto-conical disk, the rigidity of the disk changes with temperature due to internal strains.

Abstract: A system for automatically orienting hosiery blanks upon a conveyor, selectively transferring blanks from the conveyor to a turret assembly by means of a pick-up assembly, the turret assembly including a plurality of support units for sequentially conveying a plurality of blanks in an arcuate path to an automatic toe closing machine, everting the blanks and sewing closed the toe portions of the blanks.

Abstract: A method and apparatus for producing a vessel-equivalent prosthesis is described. A contractile agent such as fibroblast cells, smooth muscle cells or platelets is incorporated into a collagen lattice and contracts the lattice axially around an inner core. After the structure has set, additional layers may be formed in an ordered manner depending on the intended function of the prosthesis. Capillary beds, blood vessels and glandular structures may be formed by this process.

Abstract: The invention is concerned with a shelving structure of the kind which is assembled from a number of vertical elements (struts) and interconnected horizontal elements (beams), and in particular to a shelf for such a shelving structure. Such shelves are conventionally formed from sheet metal, comprising a horizontal shelf panel and flanges extending vertically downwardly from the shelf panel on at least two sides thereof, each flange being folded backwardly on itself to increase the strength of the flange. In accordance with this invention, each flange is so folded as to provide a pocket in which an elongate reinforcing member is positioned, such reinforcing members engaging the underside of the shelf panel.