Abstract: A rotation detecting device for vehicle speedometers includes a housing, a magnetic induction device, and a magnetized rotor near the magnetic induction device. The rotor is connected through a coupling to a rotation source. A braking device forms a magnetic circuit between one end surface of the rotor and the housing, and brings the rotor into pressure contact with the housing by a magnetic attraction force generated in the magnetic circuit. Accordingly, a stable and proper braking torque can be applied against rotor vibration, to prevent a false output signal while idling. Furthermore, the amount of wear of a bearing for rotatably supporting a rotating shaft of the rotor can be reduced to improve durability of the rotation detecting device by reducing the braking torque during high-speed rotation of the rotor.

Abstract: A coaxial filter cigarette with a rod portion having an inner core of material glowing substantially free of residue, in particular tobacco material, a sheath or wrapper for the inner core, an outer shell of tobacco and/or non-tobacco material coaxially surrounding the inner core or its sheath, respectively, a sheath or wrapper for the outer shell, and with a filter portion having a filter core, an air-impermeable sheath or wrapper for the filter core, a filter shell and a sheath or wrapper for the filter shell comprises a zone of the main heat source which is located in the inner core of the rod portion and a zone in which the major part of the aerosol reaching the mouth of the smoker is produced and which is located in the outer shell of the rod portion; the filter portion greatly reduces the combustion gases originating from the inner core of the rod portion and substantially reduces the smoke particles originating from the inner core, whereas the aerosol produced in the outer shell of the rod portion is i

Abstract: A roll member of metal body is coated with a smooth glass layer sprayed thereon. The invention is also directed to a method for manufacturing a roll member of metal body having a glass surface, including preheating the surface of the metal body which is subject to a blast treatment to 200.degree..about.600.degree. C. with or without a stainless undercoat layer on the blast-treatment surface, spraying a glass material onto the surface of the metal body, and grinding the sprayed glass surface to form a smooth surface.

Abstract: A process for producing a powder of perovskite-type double oxide comprises the steps of reacting water-soluble lead oxide and aqueous solution of alkaline metal in a reaction vessel, and precipitating lead group hydroxide; then adding a solution of Nb group, precipitating Nb group hydroxide, and reacting hydrothermally in the reaction vessel. As a result, according to the present invention, the process of manufacture is capable of producing fine particles of pure perovskite phase, which particles are excellent in homogeneity and the degree of sintering.

Abstract: A support for manufacturing and storage of cheese, including a mesh which is weared and stretched, and then secured on a peripheral, rigid reinforcement. The mesh has weft threads and warp threads which are interlaced, forming crossing zones. A coating of anti-corrosion synthetic material is provided, which coats threads of the mesh and the peripheral reinforcement, thereby forming an organic matrix connecting the weft threads and the warp threads of the mesh. The coating also provides a sealed surface along the threads of the mesh, along the peripheral reinforcement, in the crossing zones of the threads of the mesh, and in a connecting zone of the threads of the mesh to the peripheral reinforcement.

Abstract: A tennis ball comprising a hollow, spherical rubber ball (2) and a felt covering (4) attached to the rubber ball by an adhesive, characterized in that the felt covering is cut out from a felted fabric manufactured through steps of knitting a circular knitted high-pile fabric by laying blended slivers of wool fibers and nylon fibers in a circular knitted fabric in knitting the latter on a circular knitting machine so that the component fibers of the blended sliver extend as pile fibers on one surface of the base portion of the circular knitted high-pile fabric, needle-punching the circular knitted fabric so that each pile fiber is anchored at least at two parts thereof to the other surface of the base portion, and milling the needle-punched circular knitted high-pile fabric.

Abstract: The invention relates to a method and apparatus for measuring the coordinates of a survey point. The apparatus uses a reflecting mirror at the survey point, a tachymeter for transmitting light to the reflecting mirror and for receiving light reflected from the reflecting mirror, first calculating means for calculating the coordinate values of two positions of the reflecting mirror, and second calculating means for calculating a coordinate value of the survey point from the coordinate values of the two reflecting mirror positions. In operation, the tachymeter transmits light to the reflecting mirror at the survey point wherein the reflecting mirror is locatable at two points present on a line passing through the survey point and which are separated from the survey point by predetermined distances.

Abstract: The present invention relates to novel optically active isoxazole derivatives represented by general formula: ##STR1## which are useful as intermediates for synthesis of prostaglandin and a process for producing the same as well as novel aldehyde compounds represented by general formula: ##STR2## which are intermediates for preparing the compounds [XI] described above and a process for preparation thereof. In the compounds shown by these formulae, R.sup.1 represents an alkyl group or a cycloalkyl group which may have an alkoxy group or a group shown by --Ra--A--B (wherein Ra is an alkyl group; A is a hetero atom or an single bond; and B is an aromatic or hetero ring which may have a substituent(s)); and R.sup.2 and R.sup.3, which may be the same or different, each represents an aralkyl group, a silyl group or an acyl group.

Abstract: A temperature control apparatus for a machine tool includes four temperature sensors for detecting a reference temperature, outlet temperature of heat transfer fluid at an outlet of a heat exchanger, and temperatures of the heat transfer fluid at both inlet and an outlet of a machine tool element having a heat generating source. The four temperature sensors are arranged to constitute a differential temperature detecting means that activates control means to control temperature of the heat transfer fluid from the heat exchanger so as to minimize both deviations of heat transfer fluid temperature and steady-state deviations of machine tool body temperature.

Abstract: The present invention relates to an air-entraining adjuvant.This adjuvant comprises animal whole blood and/or cruor serving as the actual air-entraining agent, and also comprises blood plasma as a stabilizer for the entrained air, preferably in pulverulent or atomized form. The proportion of blood plasma in the adjuvant is advantageously from 15 to 25% by weight. The said adjuvant also contains dispersants of the bentonite type and/or aluminomagnesium clay type.This gives an adjuvant having an exceptional air-entraining capacity with a high stability; it is easy to work with as any type of mixer can be used.

Abstract: Disclosed is an organic nonlinear optical material comprising a compound having a conjugate main chain in the molecule and having donor groups D and acceptor groups A added onto the conjugate main chain in the sequence of . . . , D, D, A, A, D, D, . . . , in which the distance between adjacent D's and the distance between adjacent A's are shorter than the distance between adjacent D and A with respect to the distance between the atoms on the main chain to which the respective groups are bonded.In this organic nonlinear optical material, since electron wave functions are modified, enhanced quadratic and cubic nonlinear optical effects can be attained. Accordingly, the organic nonlinear optical material can be advantageously utilized for an electro-optical element and an optical-to-optical element.

Abstract: The present invention is an internal combustion engine having a rotary sleeve valve mechanism with a sleeve valve which has an opening formed in the outer peripheral surface for suction of fuel and discharge of exhaust gas. The present invention achieves an improvement in the admission and exhaust efficiency and simplification of the valve mechanism by employing a rotating sleeve valve. The rotary sleeve-valve internal combustion engine has a cylindrical rotary cylinder valve (3) which is rotatably supported in an engine block (1). An opening (5) which is provided in the outer peripheral wall surface of the rotary cylinder valve (3) provides communication with an inlet port (10) during admission and with an exhaust port (15) during exhaust. A seal ring (40) is provided around the periphery of the opening (5) to effect gas seal for the area between the engine block (1) and the inner peripheral wall surface (7).

Abstract: Disclosed in an optical switching connector provided with a first and second ferrule disposed with end faces thereof abutting on each other and two reference pins disposed in parallel at a predetermined interval. The first and second ferrules have two parallel pin holes, respectively. The two reference pins are inserted in the pin holes. The pin holes have an elongated sectional shape enabling the reference pins to move laterally by exactly a certain movement pitch. The first and second ferrules are able to be positioned at one position determined by one of the inside surfaces of the pin holes being pressed against the reference pins and another position determined by the other inside surfaces of the pin holes being pressed against the reference pins.

Abstract: A cyclone comprising a swirl cylinder, an inner tube disposed in the upper section of the swirl cylinder, an inlet duct arranged tangentially to the outer periphery of the swirl cylinder, a drop opening formed in the lower section of the swirl cylinder, and a straightening instrument disposed in a space directly below the inner tube. The straightening instrument includes a conical member coaxial with the inner tube and guide plates arranged along a conical surface at the outer periphery of the conical member. A lower section of each of the guide plates is curved to encounter the turn tangential velocity components of a circumferential spiral stream smoothly into axial velocities alone, and unnecessary vortices which are not required for separation of particles and which cause energy loss are eliminated.

Abstract: A metal-free lubricant composition for use in threaded tube and pipe connections includes graphite and a substantially nonabrasive, friction increasing adjusting component, both dispersed in a lubricant base material in which a polyalkylene is dissolved, with the graphite being present in an amount effect to decrease a coefficient of friction of said composition, the friction increasing adjusting component being present in an amount effective to increase the coefficient of friction of the composition, and the polyalkylene being present in an amount effective to enhance formation of graphite flakes from graphite particles upon application of pressure. The lubricant composition can provide corrosion resistance as well as similar or superior lubricating properties in comparison to conventional metal-containing grease compositions.

Abstract: A display device for photographs and/or other decorative and ornamental articles includes a first display assembly having a top plate and bottom plate connected together, a second display assembly located internally of the first display assembly and having a second top plate and a second bottom plate connected together, a suspension including an arrangement for rotatably suspending at least one of the display assemblies, and a stationary arrangement for rotating the bottom plate in one direction and rotating the second bottom plate in an opposite direction.

Abstract: A liquid painting instrument according to the present invention includes a neck portion of a cross-sectionally noncircular configuration provided on a wall having a passage hole that allows the neck member of the inner shaft to pass therethrough at a certain position in a circumferential phase while preventing the neck member from passing therethrough at other positions in the circumferential phase. The control wall is located at a position in front of the neck portion in the unknocked state. Projections are also provided on the front face of the neck member; each has a cam face that slides on the rear face of the control wall so as to displace the inner shaft rearward with respect to the fixed position where the valve is closed when the inner shaft is rotated preventing the neck member from passing through the passage hole.