Abstract: A circuit breaker of a medium voltage roll-in type is connected to an external control system by a plug and associated conductor line. The plug has a handle that is screwed into position to retain the plug in place and to compress a cable spring connected to a flexible cable enclosed in a tube. The compression of the cable spring enables a lever spring, acting oppositely to the cable spring, to move a lever attached to the cable. The lever is connected to move a trip latch that connects to a latch mechanism that opens and prevents closing of the circuit breaker.

Abstract: An undervoltage trip coil and armature, with a pivotal member biased against and riding on the latch pin of the armature to sense its position. On occurrence of a low voltage condition, a trip lever causes the latch mechanism of the breaker to trip. The pivotal member then interferes with the latch and prevents reset. The undervoltage trip coil is normally energized to normally attract the undervoltage armature. On occurrence of a specified undervoltage condition the armature releases causing the trip lever to trip the latch mechanism and allowing the pivotal member to interfere with the latch of the breaker. During such condition, the breaker cannot be reset until the armature is attracted to the undervoltage coil under proper voltage condition.

Abstract: The compounds of the present invention are useful intermediates for the manufacture of 3,5-dihydroxy-2-(.omega.-halo-3-hydroxy-1-alkenyl)cyclopentane-1-heptanoic acids and derivatives thereof. The latter compounds display valuable pharmacological properties, e.g. anti-fertility, bronchodilating, anti-secretory, smooth muscle stimulator and blood platelet aggregation-inhibiting.

Abstract: An insulation retaining device for supporting insulation material against the underside of a roofing panel interconnected with an adjacent roofing panel comprises a tongue portion for insertion between a joint of the interconnecting panels and a lip portion connected to the tongue for supporting insulation material placed against the underside of a panel.

Abstract: An intrauterine device including a contraceptively effective amount of non-toxic copper or zinc compound. The device is adapted to be inserted into the uterine cavity for a prolonged period of time.

Abstract: Laser unit for directing a laser beam in a strictly vertical direction, comprising a laser proper having a substantially vertical axis, an afocal system, an optical device for automatically correcting the verticality of the laser beam, and a base structure provided with means for supporting the assembly of said laser, afocal system and optical device in such position that the laser axis be substantially vertical. This invention is applicable to all fields and techniques in which it is desired to determine with the maximum precision the vertical at a given locus where the laser is installed.

Abstract: A process is disclosed for the production of lead carbonate by treatment of fluorine-containing mud produced in the polishing of lead glass with etching acid comprising:A. separating said mud from the etching acid;B. reacting the same with an aqueous alkali carbonate solution and filtering the solution;C. dissolving the residue in nitric acid and precipitating the fluorides in the form of alkali hexafluorosilicates by the addition of alkali ions at a pH of the solution under 4 and filtering out the precipitate; andD. adjusting the pH of the resulting solution to above 6.5 by the addition of alkali carbonate to the solution to precipitate basic lead carbonate.

Abstract: This invention relates to acaricidal and ovicidal compositions containing octyl thiobenzoate or phenyl thiobenzoate as active ingredient.

Abstract: Apparatus for the analysis of the operation of components using binary signals, such as computer components, each of the components being associated with a counter, which can either count and display the number of times the component has been activated during a given time period, or count the time length of those activations. Reset means are provided at the end of the period. The mean value of those numbers can be computed and displayed.

Abstract: The invention is concerned with a mixing tap or valve of the kind having a valve body with a cylindrical chamber therein and laterally disposed inlets for respective hot and cold water supplies and at least one outlet for said supplies or a mixture thereof, and complementary valve means in the chamber adapted to cooperate with the inlets or with the inlets and the outlet.

Abstract: Lengths of lay-in ducts, each in the form of an open top trough having exterior connecting flanges at its ends, are connected together in end to end relation in a run by bolts passed through the flanges. Each trough is provided with a cover which terminates a slight distance short of the trough ends. A joint sealing device common to the adjacent end portions of two connected troughs provides a seal between the device itself and the tops of the adjacent end portions of the trough, between the end portions of the covers and their associated troughs, and between the adjacent end portions of the covers themselves. The device extends across the troughs, and has one end hingedly connected to a supporting bracket which, in turn, is clamped fixedly in position on one of the connected trough flanges by one of the connecting bolts connecting the flanges together.

Abstract: A tensioning device for a run of a chain comprises a toothed roller, for engagement with the chain, rotatably mounted on a crank-pin which is rotated about an axis by resilient means to bring the roller into tensioning contact with the chain. Angular movement of the crank-pin is limited by means carried by the output member of a freewheel. This output member is urged by further resilient means which are weaker than the first mentioned resilient means in the direction to tension the chain.

Abstract: A trench duct system of the type embedded in concrete floors or the like is provided for use in the distribution of electrical power, service and/or communication cables and wiring throughout a building. The system includes a plurality of trench duct sections which are interconnected to form a predetermined distribution layout. Each section of duct includes a cover plate which is removably supported by a pair of vertically adjustable side rails. The length of the cover plate and the length of each supporting side rail may or may not be the same and will depend upon the particular layout. The exposed surface of the cover plate is flush with the plane of the finished floor. Adjoining side rails, when in angular relation to one another, are interconnected by coupling members or connectors which maintain the continuity and stability of the system.

Abstract: A self-powered solid state overload relay circuit having current transformers energized by conductors supplying current to a multiphase alternating current motor. The transformers have secondary windings connected to charge a capacitor with a voltage indicative of the magnitude of the maximum current in the motor windings. The circuit includes presetable impedance circuits which permit the circuit to be easily programmed to respond to a range of abnormal motor currents in the winding in motors of varying size and service factor ratings, components which are arranged to duplicate the operation of melting alloy and bimetal type overload relays in an automatic or in a trip-free manual reset mode, a light emitting device which visually indicates when the relay is in a tripped state, and components which cause the relay to be insensitive to ambient temperature variations.

Abstract: In a disc brake in which a movable member is slidably mounted on a fixed support member by means of at least one column at least one protecting device is associated to each column to prevent various particles such as mud, grease, etc. to be deposited on the sliding surfaces of the column. The protecting device includes a seal of resilient material which cooperates with the outside surface of the column by means of at least one lip, and which carries a rigid scraper element level with the outside surface of the column. The scraper element is mounted outside with respect to the lip of the seal to clean off the particles of solid materials in a first stage, the liquid particles being retained by the lip in a second stage.

Abstract: An automatic cold start and warmup system for an internal combustion engine carburetor comprises a coiled bimetallic spring element actuating a choke valve mounted across the induction passage of the carburetor to control air flow therethrough. Two PTC heating resistors are located in heat-transfer relation with the bimetallic element, have different switching temperatures and are connected in series with a source. A switch closes above a predetermined temperature level of the engine and short-circuits the resistor having the lower switching temperature.

Abstract: A method and a device for pneumatically braking and re-starting in the reverse direction a Diesel engine, comprising stopping the fuel supply to the engine, locking starting valves of the engine in an open position during the braking period, and then opening a main starting valve and the exhaust ports of the starting valves when the engine has slowed down to a rotary speed of a predetermined value.

Abstract: Process for producing fluid fuel from coal. Moisture-free coal in particulate form is slurried with a hydrogen-donor solvent and the heated slurry is charged into a drum wherein the pressure is so regulated as to maintain a portion of the solvent in liquid form. During extraction of the hydrocarbons from the coal, additional solvent is added to agitate the drum mass and keep it up to temperature. Subsequently, the pressure is released to vaporize the solvent and at least a portion of the hydrocarbons extracted. The temperature of the mass in the drum is then raised under conditions required to crack the hydrocarbons in the drum and to produce, after subsequent stripping, a solid coke residue. The hydrocarbon products are removed and fractionated into several cuts, one of which is hydrotreated to form the required hydrogen-donor solvent while other fractions can be hydrotreated or hydrocracked to produce a synthetic crude product.

Abstract: A three part bus support for supporting a cylindrical tubular bus on an insulator comprises a base and two identical end portions. Each end portion has a hook portion defining an opening and a base portion which is connectible to either of the opposite ends of the base at one of two wall portions formed along opposed ends of the base. When the end portions are connected to the base, the openings defined by the hooks are aligned for receiving a tubular bus. A projection of one end of the base portion of each end portion is tangent to an inner surface of the hook portion where the bus exerts a force caused by wind, and the base is asymmetrical about a longitudinal axis passing through the opposite ends of the base to provide improved locations of fulcrums of lever arms of the wind forces.

Abstract: The azimido benzamide of this invention and its pharmaceutically acceptable salts have an unusually and unexpectedly high therapeutic index and low toxicity in the treatment of emesis in mammals. Pharmacological testing demonstrated the superior efficacy of the compound of this invention over known, similar compounds.