Abstract: A work station comprising at least two sewing machines, or machines similar thereto for joining together separate pieces of fabric, and a horizontal work surface on which each machine is mounted with capacity for rotation about a vertical axis. The horizontal work surface and the machines are disposed relative to each other so that one person is enabled to operate all of the machines at the work station. The work surface may be of L-shaped configuration, with a sewing machine mounted rotatably on each limb of the L. Each machine may be provided with a vertical shaft having a foot engaging plate to permit rotation of the machines from beneath the horizontal work surface.

Abstract: Mounting means for a sewing machine, or a similar machine for joining together pieces of fabric, having a horizontal work surface by which the machine is supported with capacity for rotation about a vertical axis. The machine is mounted within an aperture formed in the horizontal surface, and supported by bearings. A vertical shaft, located below the work surface, is connected to the machine and provided with a disc, whereby the machine is rotatable from beneath the work surface. Shelves and compartments are located beneath the work surface for storage of materials and for housing the control circuitry for the machine. The invention eliminates the customary stand on which such machines are mounted, and the many disadvantages attendant thereto.

Abstract: A motor vehicle wheel, particularly a motorcycle wheel, comprising two identical, contiguous, co-axial, complementary light metal pressings or stampings fixed to a hub member, each forming half of a rim bed for a tire. The two mating wheel pressings provide a star-like wheel spider having closed hollow main and auxiliary spokes. The invention also relates to a method for the manufacture of such a vehicle wheel.

Abstract: Process and apparatus for the gasification and liquefaction of bituminous type coal to produce fuel oil, including gasoline, and other liquid coal derivatives. The process includes the steps of providing clean, finely pulverized coal, gasifying the pulverized coal to produce hydrogen, by mixing the coal particles with superheated steam in the presence of heat in the range of 1,800.degree. to 2,000.degree. F., in a closed, oxygen-free pressure vessel, separating the hydrogen produced and introducing it into a closed, oxygen-free, coal liquefaction pressure vessel, for admixture with a slurry composed of fine particulate coal and a hydrogenating liquid, and subjecting the mixture to heat, pressure and ultrasonic shock waves to produce liquid effluent consisting of oil and a hydrogenating fluid. The effluent may be subjected either to fractionation in a still, or to centrifugation, to separate its oil and hydrogenating fluid components.

Abstract: A snug fitting tactical load bearing vest having a left and a right vest section with a slide fastener for connecting together a portion of the front edges of the vest sections. The rear edges of the vest sections are adjustably connected in accordance with the fit of the wearer. Hook and mesh fastening means are used to secure supply pouches to the vest. Each of the pouches has a rearwardly mounted web with button portions of snap fasteners secured to the web and the posts thereof secured to the vest.

Abstract: A high speed dynamic CMOS flip-flop system having a master and a slave section each of which have a different total propagation delay. Asymmetrical clock signals are applied to the master and slave sections with one cycle portion of each clock signal turning on the master section and the other cycle turning on the slave section. Each cycle portion has a time duration substantially equal to the total propagation delay of its respective master and slave section. In this manner, the duty cycle of the clock signal cycle is matched to the ratio of the propagation delays of the master and slave sections.

Abstract: A microwave low pass harmonic absorber having a main waveguide which passes a desired fundamental frequency. A plurality of shunt waveguides are disposed on the walls of the main waveguide for providing an absorptive path for the harmonic energy. Each of the shunt waveguides includes at least one ridge for lowering the cutoff frequency of the shunt waveguide. In another embodiment, the shunt waveguides include two ridges disposed opposite each other.

Abstract: A voltage controlled oscillator whose frequency is a function of an input voltage having a first and a second pair of switching devices coupled respectively to first and second terminals of a capacitor. The oscillator has a first leg coupled from the first capacitor terminal through first inverter means, a first NOR device and third inverter means back to the first pair of switching devices and the first capacitor terminal. The second leg is coupled from the second capacitor terminal through second inverter means, a second NOR device, fourth inverter means back to the second pair of switching devices and the second capacitor terminal. The first and second NOR devices are directly cross-connected. The first and second legs each have the same number of propagation delays and during state transition, both terminals of the capacitor are coupled to the reference potential for a brief instant of time.

Abstract: A device for preventing water pollution is provided, to collect and retain liquid fuel overflow from fuel tanks for boats and similar vessels. The device is designed to collect fuel discharged from the air vent of an enclosed fuel storage tank, when the tank is refilled. A support ring is affixed to the external surface of the hull of the boat, telescopically relative to the air vent protruding threfrom. A hollow receptacle is adapted to be mounted on the support ring, for collecting fuel discharged from the vent. A retainer sustains the receptacle on the support, and locking means detachably secures the retainer to the support, while the receptacle is collecting fuel discharged or spilled from the air vent.

Abstract: A niobium containing alloy amterial is initially annealed in a hydrogen atmosphere at a temperature approximating 700.degree. C. The alloy material is then immersed in an aqueous solution of approximately between 1.0%-20.0% by weight of sodium hydroxide being maintained at a temperature of at least 70.degree. C. Immersion of the alloy material in the aqueous solution removes niobium oxide which is formed in the surface portion of the alloy material during the annealing step. After removal of the alloy material from the aqueous solution, the alloy material is plated on its surface with an electric contact material.

Abstract: An automatic paint machine for painting cylindrically contoured objects. The paint machine includes a pair of housing members which are movable in a longitudinal direction for positionally mounting the cylindrical objects in a predetermined location. A cylindrical object to be painted is mounted in rotational displacement with respect to a multiplicity of rollers which extend from each of the housing members. Rotation of the rollers results in a corresponding counterrotation of the cylindrical object being painted. A series of spray nozzles are mounted on the machine to provide a spray of paint unto the surface of the object. A plurality of shield members are positioned adjacent a segmental portion of an outer surface of the object being painted. The shields intersect the path of paint being sprayed from particular spray nozzles to divide the object surface into zones and producing a sharp delineation of color between one zone and another.

Abstract: Pattern information for production of a Jacquard pattern by a knitting or a weaving machine is automatically and quickly obtained. A pattern drawn on a sheet by a designer is converted to an analog type electrical signal by a television camera, and said analog signal is converted to a digital signal according to each color of each picture element. Said digital signal is stored in a digital memory. After the edition of said digital signal in the memory, the digital signal which defines the color of each picture element is applied to a knitting or a weaving machine.

Abstract: A microwave feed forward passive coupling system for separation of at least a first and a second signal portion into at least first and second signal components of differing frequencies. The first and second signal portions have a majority of the second and first components respectively and a minority of the first and second components respectively. A second sample of the second signal portion and a part of the first signal portion are combined to produce substantially the second component. In addition, a first sample of the first signal portion and a part of the second signal portion are combined to produce substantially the first component.

Abstract: A variable analog function generator which is independent of an external computer during the time that it generates at least one predetermined output function of at least one input variable. The output function is expressed in terms of hybrid variables each having an analog portion and a digital portion. The function generator has a first dedicated memory which is loaded during set up time with data related to breakpoints defining the input variable. A second dedicated memory is loaded during set up time with tables of values defining the digital portion. During function generation, the analog portions are generated in response to (1) the input variable and (2) the data related to the breakpoints which is accessed in parallel from the first dedicated memory. The output function is generated in response to (1) the analog portions and (2) the tables of values accessed from the second dedicated memory.

Abstract: An analog switching system having fan-out for switching a plurality of inputs coupled to analog signal sources with respect to a plurality of outputs coupled to analog signal destinations. A three stage switch matrix includes input, middle and output switch blocks with each block having a plurality of analog switch means and latching means. Any one input terminal of a switch block may be connected to any one or more of the output terminals of that block. A matrix controller coupled to each of the switch blocks addresses each switch block and actuates at least one of the latching means to provide a connection assignment for at least one of the analog switching means.

Abstract: An attachment for converting a farm tractor to a front end loader having front and upwardly extending frame members, a pair of boom arms and an implement. Hydraulic cylinders actuate the boom arms and implement. An electrohydraulic valve assembly is hydraulically coupled to the cylinders and is rigidly secured to the attachment outside of the cab. A switching assembly electrically switches the electrohydraulic valve assembly and is secured within the cab for easy access to the operator of the tractor. An electrical cable is coupled between the switching assembly within the cab and the electrohydraulic valve assembly outside of the cab.

Abstract: A tractor towed vehicle having a frame and hydraulic functions powered by a plurality of hydraulic devices. An electrohydraulic valve assembly is coupled to the devices and is rigidly secured to the frame of the towed vehicle. A switching assembly having a plurality of switches is adapted for electrically switching the valve assembly with a cable coupled between the switching assembly and the valve assembly. The switching assembly is disposed within the tractor cab for easy access of the plurality of switches to the operator of the tractor.