Abstract: Two upper electrodes 16 and 17 are horizontally spaced apart from each other with a predetermined distance and vertically extend through a furnace roof 3 of a furnace shell 2. Upper conductors 20 and 21 are connected to the upper electrodes 16 and 17 and extend in a direction away from the upper electrodes 17 and 16, respectively. Two lower conductors 22 and 23 are connected to a lower electrode 1 and extend in directions along which the upper conductors 20 and 21, respectively. Power source circuits 24 and 25 are arranged between extension ends of the upper and lower conductors 20 and 22 and 21 and 23, respectively. Arcs 12a and 12b generated between the upper electrodes 16 and 17 and the lower electrode 1 are directed to a center of the furnace shell 2.

Abstract: Waste paper stock pulp slurry supplied through a stock inlet is separated at screening sections to a high quality stock and a reject containing contaminants and undefibered waste paper. The high quality stock is sent to a next stage as accept. The reject is sent to a defibering section and is diluted after defibration, part of the reject being circulated to the screening sections, the remainder being discharged out of the system through a reject outlet. Provision of screening and defibering sections in one and the same screen can satisfy contradictory requirements, i.e., to increase contaminant removing efficiency, to raise production yield and to attain space- and cost-saving.

Abstract: An apparatus for preheating and charging scrap material includes a throat section (38) having at one end thereof a material charging inlet (37) connected to a furnace shell (2), the throat section extending laterally and upwardly obliquely, a heat exchanger section (39) connected to the other end of the throat section (38) and extending upwardly, a sealing section (42) above the heat exchanger section (39), a material supply (43) for supplying the scrap material into the sealing section (42), an exhaust duct (53) formed at the heat exchanger section (39) just below the sealing section (42) and connected to an exhaust system (58) and a material delivery device (46) disposed at the other end of the throat section (38) for delivering the scrap material (13) from the heat exchanger section (39) to the material charging inlet (37). The scrap material (13) is substantially continuously charged into the furnace shell (2) while preheated by the high-temperature exhaust gases from the furnace shell (2).

Abstract: Water to be cooled is sprayed through water spray ports at a bottom of an upper water vessel into a filler unit having a plurality of heat exchange surface members extending in parallel with each other to define flow passages between them and concurrently ambient air is sucked transversely into the flow passages. Thus, the water flowing down over the heat exchange surface members is cooled by the ambient air in a cross flow manner. In such cooling of water, some of the flow passages are sectioned so as to supply the water in the upper water vessel to some of flow passages so that in a normal condition with no fear of white smoke being generated, the water is sprayed over all of the heat exchange surface members and direct cooling is effected in every flow passage by the ambient air.

Abstract: Water to be cooled is sprayed through water spray ports at a bottom of an upper water vessel into a filler unit having a plurality of heat exchange surface members extending in parallel with each other to define flow passages between them and concurrently ambient air is sucked transversely into the flow passages. Thus, the water flowing down over the heat exchange surface members is cooled by the ambient air in a cross flow manner. In such cooling of water, some of the flow passages are sectioned so as to supply the water in the upper water vessel to some of flow passages so that in a normal condition with no fear of white smoke being generated, the water is sprayed over all of the heat exchange surface members and direct cooling is effected in every flow passage by the ambient air.

Abstract: Synthetic resin structural members are inserted into a hollow joint member to abut each other in the joint member. A bearing-pressure damping member is fitted into each of bolt holes on the members, axes of bolts extend alternately in two mutually perpendicular directions. The structural members and the hollow joint member are secured with bolts and nuts. Due to damping action resulting from elastic deformations of the damping members, a load is substantially evenly distributed over the whole bolts to prevent concentration of the load to some of the bolts. The arrangement of the bolts with their axes extending alternately in two mutually perpendicular directions will shorten the length of the joint member.

Abstract: Provided are a furnace shell with a lower electrode at a bottom of the shell, a furnace roof adapted to close an upper portion of the furnace shell, a material charge port substantially at a center of the furnace roof and two upper electrodes positioned laterally opposite to each other with respect to the material charge port and vertically extending through the furnace roof. Scrap material is continuously charged through the material charge port and arcs are directed to the scrap material at a center of the furnace shell.

Abstract: A power transmission shaft which transmits rotational energy of a flywheel is divided into a first shaft section adjacent to the flywheel and a second shaft section adjacent to a power take-off gear. A planetary gearing is arranged between the shaft sections and is adapted to be driven by a servo motor. A power take-off gear is mounted on an output section of the planetary gearing so as to transmit the power to drives. The servo motor controls the rotation of the output section of the planetary gearing to vary the rotation of the power take-off gear so that the action velocity of the slide or the like can be freely controlled and press working for different kinds of materials can be carried out.

Abstract: Water to be cooled is sprayed through water spray ports at a bottom of an upper water vessel into a filler unit having a plurality of heat exchange surface members extending in parallel with each other to define flow passages between them and concurrently ambient air is sucked transversely into the flow passages. Thus, the water flowing down over the heat exchange surface members is cooled by the ambient air in a cross flow manner. In such cooling of water, some of the flow passages are sectioned so as to supply the water in the upper water vessel to some of flow passages so that in a normal condition with no fear of white smoke being generated, the water is sprayed over all of the heat exchange surface members and direct cooling is effected in every flow passage by the ambient air.

Abstract: Each of insulation panels which form together an insulation layer is fixed on a tank body at one point at the center of the panel. An insulation material having elasticity at low temperature is filled in a joint between the adjacent panels. A heat insulator having elasticity at a given temperature and high heat insulating property is airtightly fitted in the joint. A balance hole for preventing pressure change is provided in the insulation layer.

Abstract: In a lysholm compressor having intermeshing male and female rotors rotated in a casing to compress an axially flowing gas, discharge-side shafts of the rotors are borne by discharge-side bearings to fix the discharge-side shafts in thrust direction while suction-side shafts of the rotors are borne by suction-side bearings to allow the suction-side shafts to move in the thrust direction. Clearances of the rotors to the casing are properly set or selected.

Abstract: A power transmission shaft which transmits rotational energy of a flywheel is divided into a first shaft section adjacent to the flywheel and a second shaft section adjacent to a power take-off gear. A planetary gearing is arranged between the shaft sections and is adapted to be driven by a servo motor. A power take-off gear is mounted on an output section of the planetary gearing so as to transmit the power to drives. The servo motor controls the rotation of the output section of the planetary gearing to vary the rotation of the power take-off gear so that the action velocity of the slide or the like can be freely controlled and press working for different kinds of materials can be carried out.

Abstract: A tank body is covered at its outer surface with an insulation material and is supported by tank supports arranged on a bottom of an inner shell of a hull. A drainer for discharging leaked liquid is mounted each at least at four corners on a lower surface of the insulation material at the bottom of the tank body. A drip tray is arranged below each drainer. Sealing is provided between the tank support and the insulation material. Leaked liquid is reliably collected and disposed by the drip tray.

Abstract: A linear motor has a stator body securely attached to a marine floating structure and a movable body acting as solid mass. In response to a command signal from a controller which phase-controls a signal from rocking-motion sensor, the movable body is forced to move in a direction of reducing the rocking motion against the floating structure in rocking motion, so that the rocking motion of the marine floating structure is reduced or suppressed.

Abstract: A power transmission shaft which transmits rotational energy of a flywheel is divided into a first shaft section adjacent to the flywheel and a second shaft section adjacent to a power take-off gear. A planetary gearing is arranged between the shaft sections and is adapted to be driven by a servo motor. A power take-off gear is mounted on an output section of the planetary gearing so as to transmit the power to drives. The servo motor controls the rotation of the output section of the planetary gearing to vary the rotation of the power take-off gear so that the action velocity of the slide or the like can be freely controlled and press working for different kinds of materials can be carried out.

Abstract: Cooling liquid flowing through cooling-liquid passages cools in heat-transmission manner an inner layer on an inner surface of an impermeable intermediate layer and is directed through a piping to an interface between the intermediate and outer layers, whereby the porous outer layer is cooled by latent heat generated by evaporation of the cooling liquid infiltrated into the porous outer layer.

Abstract: Cooling liquid flowing through cooling-liquid passages cools in heat-transmission manner an inner layer on an inner surface of an impermeable intermediate layer and is directed through a piping to an interface between the intermediate and outer layers, whereby the porous outer layer is cooled by latent heat generated by evaporation of the cooling liquid infiltrated into the porous outer layer.

Abstract: A flatness detector has a fixed shaft and a plurality of rotary rings loosely fitted over the shaft and adjacent to each other along an axis of the shaft, a pneumatic bearing being defined by a gap between the rings and the shaft. The shaft is provided with heating means for heating the shaft to prevent shrinkage of a rolled strip due to temperature variations of the strip as well as bending means at opposite ends of the shaft for bending the shaft in a predetermined direction so as to prevent formation of lengthwise wrinkles on the rolled strip.

Abstract: Cooling liquid flowing through cooling-liquid passages cools in heat-transmission manner an inner layer on an inner surface of an impermeable intermediate layer and is directed through a piping to an interface between the intermediate and outer layers, whereby the porous outer layer is cooled by latent heat generated by evaporation of the cooling liquid infiltrated into the porous outer layer.

Abstract: Oil feed and discharge lines (34) and (35) are respectively connected between an engine (15) and an external oil feed type engine-driven supercharger (I) so as to circulate a lubricating oil (0) between them. The lubricating oil (0) used in the engine (15) is fed through the oil feed line (34) to the supercharger (I) while the lubricating oil (0) used in the supercharger (I) is returned through the oil discharge line (34) to the engine (15). As a result, the lubricating oil and associated parts exclusively for the supercharger can be eliminated.