Abstract: Epoxides or glycols are produced by passing a gaseous olefin through a reaction mixture containing a halogenating enzyme, an oxidizing agent and a halide ion source whereby the olefin is converted to a halohydrin. The halohydrin is converted to an epoxide which may be converted by hydration to a glycol. Conversion of the halohydrin to an epoxide may be carried out enzymatically.

Abstract: An electronic controller for an internal combustion engine provides a ratio control signal corresponding to a respective air/fuel ratio, and responds to an air flow signal, a fuel flow signal and the ratio control signal to control fuel flow as to make the ratio of air flow to fuel flow substantially equal to said respective air/fuel ratio. The ratio control signal is developed from a base run ratio control signal as modified in response to various parameters such as engine temperature, manifold pressure, idle, manifold vacuum, fuel temperature, wide open throttle, engine speed, and start. The controller also provides a speed-up circuit for promptly responding to change in air flow and dynamic braking for the fuel metering pump. The pump speed circuit includes a range extender.

Abstract: In a heat exchanger such as a steam generator for a nuclear reactor, two or more bundles of helically coiled tubes are arranged in series with the tubes in each bundle integrally continuing through the tube bundles arranged in series therewith. Pitch values for the tubing in any pair of tube bundles, taken transverse to the path of the reactor coolant flow about the tubes, are selected as a ratio of two unequal integers to permit efficient operation of each tube bundle while maintaining the various tube bundles of the heat exchanger within a compact envelope. Preferably, the helix angle and tube pitch parallel to the path of coolant flow are constant for all tubes in a single bundle so that the tubes are of approximately the same length within each bundle.

Abstract: A sampling probe is disclosed for obtaining a sample of granular material from a bulk quantity of such material to facilitate inspection of the sample. The probe includes a sampling tube assembly operative to receive a granular sample therein when inserted into a bulk quantity of grain or the like, the sampling tube assembly being operative to isolate the sample and thereafter discharge the sample into a mixing chamber from which the sample is withdrawn through a delivery tube for transfer to an inspection site.

Abstract: A control apparatus for a multiple pattern sewing machine. Included in the sewing machine are a means for controlling the displacement of a feed mechanism for feeding a cloth and a means for controlling the displacement of a bight mechanism for swinging a sewing needle in the direction crossing the cloth feeding direction. A plurality of switching devices are provided for selectively coupling to the feed control means a plurality of different amplitude reference signals for controlling the feed mechanism. A plurality of switching devices are provided for selectively coupling to the bight control means a plurality of different amplitude reference signals for controlling the bight mechanism. Counter means, which are responsive to a timing signal generated for each stitch in the pattern, are provided for making a stepping operation for selectively rendering conductive the switching devices of the feed switching means and the bight switching means for each stepping operation.

Abstract: Stable, sterile, aqueous based fluidized oleoresin compositions and methods for making such compositions comprising a small particle size stable aqueous dispersion of from about 10 to about 20% each of an oleoresin component and an polyoxyethylene ether of sorbitol monooleate having about 20 oxyethylene groups per molecule. The compositions further include an edible hydrophilic gum and phosphoric acid.

Abstract: A security system for controlling access to a locked area and updating a lock code combination memory. A central console generates lock code combinations, encodes key cards, and stores the lock code combinations. Correspondence between an authorization code combination inputted into the console, and a valid, stored authorization code combination is required to operate the console. Each lock stores a guest, station and master lock code combination. The lock opens when correspondence occurs between an inputted lock code combination and one of the stored lock code combinations. The stored guest or station combinations may be altered when an appropriately coded key card is inserted in the lock.

Abstract: A barrier guard for use with a winding machine or the like to prevent inadvertent access by the operator to a nip established between two cooperating rolls. The barrier guard includes first and second generally U-shaped guard bars, the second guard bar being pivotally connected to an elongated reach of the first guard bar which is adapted for pivotal connection to the machine frame for movement between an operating position wherein the guard bars prevent inadvertent access to the nip and a nonoperating position enabling operator access to the rolls for servicing and the like. A limit switch is mounted on the machine for actuation by the barrier guard so that operational rotation of the rolls is enabled only when the barrier guard is in its protective position.

Abstract: A method for forming a concrete floor as a monolithic unit is disclosed wherein wet concrete mix is deposited and screeded to achieve a generally uniform thickness of concrete with the aggregate being densified or settled to produce a thin upper layer formed substantially from sand and cement, thereafter floating the concrete to substantially remove surface irregularities, and then grinding the upper surface of the concrete floor after it is hardened to produce a flat surface having a "sanded" finish.

Abstract: This invention relates to the production of iodine. More particularly, the invention relates to the enzymatic oxidation of iodide to iodine and the recovery of said formed iodine.

Abstract: Somatostatin (SS) is modified to incorporate a carbohydrate moiety in the peptide chain by linkage to either Asn, Ser or Thr. The modified SS peptide analog may have the formula: ##STR1## wherein R.sub.1 is preferably a hexose or amino-hexose, such as glucose or N-acetylglucosamine. Alternatively, the carbohydrate can be linked to Ser or Thr by an ether bond. Such glycosomatostatins have an extended biological half-life compared to the parent peptide and substantially the same potency. Modifications and substitutions with respect to other amino acid residues in the chain can be made in the glycopeptides, for the purpose of increasing the effectiveness of SS analogs in other ways, and such increased effectiveness is a characteristic of the glycosomatostatin along with its longer-acting biological effect.

Abstract: A femoral insert for a hip joint prosthesis wherein the proximal and distal portions are angularly joined to define a lateral apex, the apical height of which has a particular ratio to the medial length of the insert.

Abstract: An improved electrical connector of the type having spaced-apart plug-in receptacles is disclosed wherein a cover plate is slidably attached to the connector above the spaced-apart receptacles, the cover plate having a single pair of apertures and being of a length permitting it to be positioned upon the connector in order to selectively expose one or both receptacles or to shield both receptacles.

Abstract: An accumulating conveyor having a plurality of article carrier rollers arranged along the conveyor and employing drive wheels each of which has a peripheral drive surface adapted for driving engagement with at least one carrier roller. An annular groove is formed in the drive surface of each drive wheel and receives the drive reach of a drive cable therein so that the drive cable is disposed between the drive wheels and carrier rollers, the drive wheels being formed so as to effect increased frictional gripping with the drive cable when their drive surfaces are in driving engagement with the associated carrier rollers. In selected embodiments, the drive wheels act as clutch wheels and are mounted for controlled pivotal movement between driving and non-driving positions relative to the carrier rollers. Brake means may be provided to brake the carrier rollers when the clutch wheels are moved to their non-driving positions.

Abstract: An improved automatic feeder apparatus is described for cyclically receiving dry particulate or powdered material from a source and feeding the same into a conveying line under fluid pressure. The feeder apparatus comprises a transfer vessel having a material inlet for receiving materials from the source and a material outlet coupled into an outlet chamber where the materials are fluidized and fed into the conveying line. Pressure generating means including appropriate valving are provided for continuously supplying a positive air pressure to the chamber for fluidizing the materials, and for alternatively establishing a positive and negative air pressure within the transfer vessel several times a minute to assist in unloading and loading, respectively. The flow of materials into the chamber is controlled by a hinged flap valve which automatically opens and closes in response to changes in pressure within the transfer vessel and chamber.

Abstract: Methods and apparatus for plasma impurity control in toroidal plasma systems such as Tokamak plasma systems is disclosed which utilize an axisymmetrical plasma diffusion pump system.

Abstract: Apparatus is disclosed for determining the proportion of ethylene glycol in an aqueous solution that is used to remove as well as prevent the accumulation of ice and snow on commercial aircraft, the apparatus being used in de-icing equipment of the type which has a self-propelled vehicle, a large capacity heater which heats water carried on the vehicle, a proportioning system for mixing the water and ethylene glycol and pumping means for pumping the solution containing the desired proportion of ethylene glycol under high pressure through a nozzle which is directed toward the aircraft. The apparatus can determine the percentage of ethylene glycol that is contained in the aqueous solution at any time during the operation of the de-icing equipment.

Abstract: A device for dispersing fluid polymeric material in a liquid diluent without degradation of polymer chain length includes a body having a generally T-shaped interior cavity with a pair of opposed inlets and a side outlet. One inlet holds a diluent injection assembly while the other holds a polymer injection assembly. The juxtaposition of the front ends of the injection assemblies within the interior cavity creates a zone where concurrent streams are pre-mixed and an orifice where the pre-mix is immediately subjected to high shear forces; adjusting the relative positions of the injection assemblies changes the size of the orifice. The continuous on-line supply of a polymer dispersion to a point of use incorporates such a dispersing device, a metering pump for supplying polymer and a small detention tank, which ages the dispersion for about a minute before it is delivered to a conduit leading to the point of use.

Abstract: A heart valve prosthesis has an annular valve body and two curved leaflets which are pivotally mounted for movement between open and closed positions. A 360.degree. groove is provided in the interior surface of the valve body, and spherical pivots projecting from opposite sides of the leaflets are pivotally received in the groove. The valve functions as a check valve, and the flow reversal which occurs during the pumping strokes of the heart causes the leaflets to pivot from one position to the other. As the leaflets pivot, they orbit about the axis of the valve eliminating localized wear which could otherwise occur at the locations in the valve body against which the rotating pivots would bear.

Abstract: The invention is directed to a polyester resin, and a method for making it, for use in a powder coating. The resin comprises on oligomer of neopentyl glycol or cyclohexane dimethanol and terephthalic acid, isophthalic acid or dimethyl terephthalate in a mole ratio between about 1.15 and about 1.50, the oligomer being reacted with trimellitic anhydride to provide a trimellitate with the mole ratio oligomer to trimellitate being in the range of between about 2.5 and 5.5. The trimellitate is reacted with a dicarboxylic anhydride or acid with the mole ratio of trimellitate to dicarboxylic anhydride or acid between about 1.5 and about 2.5. The polyester resin has an ICI viscosity at 200.degree. C. between about 20 poises and about 60 poises, an acid value of less than 30, a hydroxyl value between about 20 and about 60, and an equivalent weight between about 935 and about 2800.