Abstract: The present invention relates to a process for recovering the exhaust heat using the working fluid of the toluene (or benzene)-water system in the vapor cycle, when the moderate heat energy of 400.degree.-750.degree. C. is converted into work.In practice, in order to obtain the maximum overall thermal efficiency .eta.m, the working fluid of the Rankine cycle in the recovery of exhaust heat of the temperature of 400.degree.-700.degree. C. is suitable to be the mixture of toluene (or benzene) and water containing 20-80 mol. % of water, while the working fluid of the reheating cycle in the recovery of exhaust heat of the temperature of 600.degree.-750.degree. C. is suitable to be the mixture of toluene (or benzene) and water containing 45-90 mol. % of water in considerations of the thermodynamic efficiency of vapor cycle, the performance of the exhaust heat boiler and other factors.

Abstract: A notching tool for forming notches in ridge- or hip-capping for roofs, the notches being formed to match the profile of the roofing sheets.The tool has a base with a pair of spaced feet which engage the ribs on the roofing sheets to align the tool. A notching head on the base has a replaceable die and punch pair, one of which is fixed to support the capping while the other is manually or power-operated to provide a shearing-type cutting action between the die and punch to cut the notches. Adjustable guides on the notching head support the capping for angular alignment between the capping and the notching head and for adjustment of the depth of the notch. The notching head may be pivotally and/or rotatably mounted on the base and the die and punch may be reversible.

Abstract: A disposable, individual coffee container and filter unit including a flat frame having an apertured center section, filter layers covering the top and bottom of the frame and being secured thereto, and individual quantities of coffee received in compartments formed in the frame between the spider-like center sections thereof. Additionally, a coffee brewing receptacle having an apertured base and a retainer flange in the base thereof for engaging the coffee carrying flat frame is provided.

Abstract: The method and production of macromolecular monomers from cationically polymerizable monomers and vinyl-substituted hydrocarbon halides is disclosed. These cationically polymerizable monomers may react in the presence of a catalyst with the hydrocarbon halide to produce a macromer retaining a polymerizable headgroup. This compound may be used in a variety of copolymerization processes with a variety of copolymerizable monomers to form graft copolymers.

Abstract: An electro-heater container comprising a cup having a bottom and including a stem type support pedestal formed as a unit with the cup, the bottom having a center aperture therein extending through said support pedestal, and an electric heater unit is secured to the bottom by a member extending through the stem and a base disc of the support pedestal for heating contents of the container.

Abstract: A portable security device adapted to be removably mounted on a door frame adjacent the inside of an inwardly swinging door to prevent the opening of the door and actuate an alarm when forcible entry is attempted. A steel rod is embedded within a rigid housing and extends outwardly from an end wall of the housing. The rod is removably inserted into a complementary-shaped hole in the door frame. The housing has an angled wall extending downwardly toward the rod and forms an exterior angle of between 120.degree. and 165.degree. therebetween. The angled wall lies in abutting relationship with the inside surface of the door blocking the opening of the door. A battery-operated alarm is contained within the housing and has a control button that projects outwardly through a hole in the angled wall and engages the door for actuating an alarm switch. The angled wall may be covered with a sheet of resilient material with the switch button extending a short distance beyond the outer surface of the resilient sheet.

Abstract: An abrasive or polishing sheet has indicia carried on its rear face overlaid by a translucent textile material providing a surface engageable by hooks, the material being adhered to the said indicia and their information content remain discernible through the said material. The sheet can be secured to a hooked surface of a carrier unit and can be removed therefrom and reused. The grit size indication is provided without needing to print the fabric.The textile material is a brushed, knitted nylon having less than 20 loops or curls per square mm. A carrier pad has a material to which the sheet can be attached. The material of the pad has inclined stalks extending therefrom which have unhooked ends. These features result in a very low peel strength between sheet and pad.

Abstract: An adapter reel of the type which is mounted on a hub of a machine for holding and dispensing a coil of wire. The reel has a central tubular sleeve which is adapted to be slidably mounted on a machine hub. A plurality of base plates are mounted on the sleeve and extend radially outwardly in a spokelike fashion. A coil holding arm assembly is movably mounted on each of the base plates for receiving and holding a coil of wire. Each arm assembly includes an inverted L-shaped rod attached to a sleeve which is slidably and pivotally mounted on an upstanding post which is attached to the base plate. The sleeves and rods are movable between locked and unlocked positions. A lower end of the rod extends beyond the lower end of the sleeve and is engageable in a hole formed in the base plate to lack the arm in a coil holding position.

Abstract: A transmissive reflector which both reflects light and lets light pass therethrough. The transmissive reflector comprises a nacreous pigment in combination with a transparent adhesive. The nacreous pigment and the transparent adhesive can be separately coated on a clear or transparent substrate or combined as a blend or mixture thereon. The transmissive reflector imparts lustre or a pearlescent effect to light as well as diffuses the light and, thus, enhances the appearance of various articles such as transparencies, rear projection screens, projection television, and the like. Also, when utilized as a reflector as for a background, the reflected light has a lustre imparted thereto and thus any article displayed is distinctly set forth, as for example, a liquid crystal readout, and the like.

Abstract: A hitch for mounting on the back of a vehicle for towing a trailer or other equipment. A ball is mounted on the extended end of a hook portion of the main hitch body and is adapted to receive either a lunette or hooded-type coupler thereon. A closure latch is pivotally mounted on a rear portion of the hitch body and is engageable with the ball when securing a lunette coupler on the hitch and is alternately engageable with the hood of a hooded coupler when securing such a coupler on the ball. A spring-biased first locking pawl is pivotally mounted on the closure latch and is clamped against a shoulder on the hitch body by a spring to lock the latch in closed position with a hooded coupler. A second locking pawl is pivotally mounted on the first locking pawl and is clamped against the shoulder by the spring to lock the closure latch in engaged position with the hitch ball when securing a lunette coupler thereon.

Abstract: A half-flush mechanism for a commode. The half-flush mechansim allows user control of the amount of water used in flushing the commode. Activation of the mechanism entails pushing of a button located in an otherwise conventional flush handle. The mechanism is always in the full flush mode and returns to the full flush mode until again activated by the pushing of the half-flush button. The half-flush mechanism is adaptable to a variety of commode designs and may be adjusted by the user to release varying amounts of water during the half-flush mode.

Abstract: A kit for children's playing, fortune-telling, learning or the like use, including at least one pair of block pieces each carrying a figure thereon and at least one of which is of transparent material. The block pieces, of planar or cubic form, are laid one on the other to form a composite picture of the figures carried by the respective pieces, which is visible viewed from the transparent block side and changeable by changing the relative angular position of the block pieces. The cubic block pieces can each have three different figures respectively applied to its three faces forming a vertex so that the number of composite pictures obtainable therewith is multiplied. The wide variety of composite pictures obtainable with the play kit of the invention makes it highly attractive to children and also to grown-up people, despite of its extremely simple construction.

Abstract: A pressurized aeration tank is provided which comprises an inner barrel arranged on the tank axis and an axial-flow impeller of optimum characteristics mounted therein, the inner barrel and the outer barrel or body portion of the tank being particularly proportioned and arranged relative to each other to define in the tank a circuitous flow passage of minimal total resistance loss. With this tank structure, a highly improved plant efficiency of BOD removal is readily obtainable with the use of concentrated activated sludge and aerobic microorganisms, mainly of the Opercularia group, in a specified range of tank pressure.

Abstract: The invention sets forth novel telechelic (terminally functional) prepolymers which may be reacted to form curable epoxides. On account of the incorporation of saturated elastomer chains into the prepolymers improved epoxides arise having increased moisture resistance and less brittleness than conventional epoxides. These prepolymers may be straight chain or three-armed star, emanating from a common phenyl ring nucleus. Molecular weights of the prepolymers range from about 700 to 50,000 (linear) and from about 1000 to about 75,000 (three-arm star). The epoxides are useful as coatings, in adhesives, as additives, and the like.

Abstract: Apparatus to position or remove a plastic lens including an eyelid opener having upper and lower crossbars for individual engagement with the person's upper and lower eyelids to retain them open, and plastic lens engaging tweezer having a pair of resilient arms with a flexible lens engaging member thereon for engaging the plastic lens in the wearer's eye and removing the same.

Abstract: An aircraft drive system having two propellers, each of which is driven independently by a drive belt which is connected to a separate engine. The engines are mounted in cantilever fashion in a spaced relationship on a hollow sleeve. The sleeve is attached by a pair of spaced brackets to the frame of the aircraft. A shaft is rotatably telescopically mounted within the sleeve by bearings located on the ends of the sleeve. A pulley is fixedly mounted on one end of the shaft and is driven by one of the engines for rotating one of the propellers which is fixed on the other end of the shaft. Another pulley is rotatably mounted by bearings on the sleeve and is driven by a drive belt connected to the second engine. The second propeller is telescopically located about the sleeve adjacent the first propeller and is firmly connected to the second pulley which rotates said second propeller completely independent of the first propeller and in an opposite direction than the first propeller.

Abstract: A wood or coal-burning stove or fireplace has a baffle attached to a flue. Upon opening of the stove door or the fireplace door, the baffle is automatically adjusted to increase the amount of air admitted to the stove or fireplace and thus prevents smoke from coming out of the doors.

Abstract: The present invention relates to a microbiological process for the production of citric acid by assimilation of .alpha.-olefins, normal paraffins and their mixture. This process is carried out by culturing the microorganisms selected from the group of Candida tropicalis, Candida lipolytica, Candida intermedia and Canida brumptii and their mutants and their variants under higher concentration of dissolved oxygen than that in ordinary aeration in the culture medium. The concentration of dissolved oxygen in the culture medium is suitable in the range of from 5 to 40 ppm, preferably from 10 to 30 ppm on the weight basis of said culture medium in this invention.There is many means of which increase the dissolved oxygen in the culture medium.

Abstract: A preserving element (5) formed as a synthetic material mould part has preserving troughs (6) in which the bent end sections (3b) of connecting bars (3), later to be bent out, are embedded with a brittle mass (7). The device has the advantage that after the anchoring of the connecting bars (at 3a) in the structural member (2), the element (5) and the mass (7) can be easily removed. The device forms an easily transported and handled structural unit which is usable in the production of construction joints of steel concrete structures of any kind.