Abstract: An improved automatic roll-in take-up roller for winding and unwinding a continuous sheet-like recording medium is disclosed, which comprises a plurality of cams disposed inside a hollow cylindrical body of the take-up roller for releasably holding a leading end of the recording medium inside the take-up roller, and a switching guide unit disposed immediately upstream of take-up roller for guiding the recording medium toward the take-up roller or a cutter. After the leading end of the recording medium is retained on the take-up roller, the guide unit can be displaced to a position spaced far distant from an outer peripheral surface of the take-up roller so that a large number of turns of the recording medium can be wound around the take-up roller. The cams are arranged along a longitudinal axis of the take-up roller at such a distribution that the recording medium is automatically aligned even when the leading end of the recording paper is inserted into the take-up roller in an obliquely displaced condition.

Abstract: A method of manufacturing an X-ray exposure mask comprises steps of forming a membrane including a layer of crystalline silicon carbide on a silicon substrate, processing a top surface of the membrane such that the top surface becomes a mirror-flat top surface, depositing a layer of X-ray absorbing material on the mirror-flat top surface of the membrane, and patterning the layer of the X-ray absorbing material according to a desired semiconductor pattern.

Abstract: In a press forming apparatus for forming spiral parts, a plurality of first connecting rods are mounted on a lower end of a divided core divided from a die in shifting relation to each other in a winding direction of vortex. The plurality of first connecting rods are supported by a vertically movable core plate, while a plurality of second connecting rods are mounted on a lower end of a lower punch in shifting in position relation to each other. The second connecting rods extend respectively through bores in the core plate, and are supported by a lower punch plate movable vertically and arranged below the core plate. Further, the first and second connecting rods extend through a stationary block. The stationary block is arranged between the die and the core plate, for restricting downward movement of the lower punch and the divided core.

Abstract: A portable projection device has a case-like body made of synthetic resin and formed hollow in which a lens, a circuit connected to a light emitting means, a power source and resistances, a display film and a film setting section are arranged and housed. The circuit is opened and closed by a switch arranged on the case-like body to thereby render the portable projection device operative and inoperative. The portable projection device can be used as a time-displaying timepiece, a flashlight, an alarm lamp, a guide lamp or the like.

Abstract: A method of fabricating an X-ray exposure mask including the steps of forming a .beta.-SiC membrane by chemcial vapor deposition and simultaneously doping the membrane with at least one of phosphorous, boron, nitrogen and oxygen.

Abstract: A multi-region reactor core pebble bed high temperature gas reactor comprises a pebble bed reactor core housed within a pressure vessel and charged with spherical fuel. The reactor core is surrounded by a reflector wall comprising a partition wall which partitions the reactor core into a plurality of reactor core sub-regions. The reflector wall comprises a plurality of layers of reflector blocks, adjacent blocks of a layer being secured against one another by removable tapered keys wedged therein between.

Abstract: A membrane of the present invention used for a mask for X-ray exposure is made of an amorphous of boron nitride carbide hydrogenated, containing 1 to 10 atomic percent of carbon. This membrane is made in a plasma CVD, whose source gases are ammonia, diborane and methane diluted in argon gas. The flow rate ratio of the ammonia to the diborane is 0.6 to 1.55, the deposition temperature is 350.degree. to 500.degree. C., the gas pressure is 60 to 250 Pa, the applied RF power is 0.1 to 0.17 W/cm.sup.2. Thus formed membrane is adequately transparent to a visible light and the X-ray used for mask alignment, while keeping the stiffness enough and the residual stress properly tensile.

Abstract: A corrosion preventing device for use in an in-pile structure of a helium gas-cooled reactor for removing gaseous oxidating components from a primary cooling gas in a pressure vessel of the reactor to thus prevent oxidation of graphite members of the reactor pile. An oxidation product consuming member is provided in series with a primary cooling gas supply pipeline or a bypass pipeline thereof along with a device for heating the oxidation product consuming member. The oxidation product consuming member may be a single cylindrical member or a bundle of rods having a large number of through holes formed therein in a honeycomb pattern in the lengthwise direction thereof or a large number of balls. The material of the oxidation product consuming member should have a high affinity for oxidizing impurities at elevated temperatures. Preferably, the material of the oxidation product consuming member is carbon or graphite.

Abstract: A slipper is formed with a sole defined by an outlined edge and having a predetermined length from the front end to the back end thereof, the sole being composed of a toe of a predetermined width defining the front end thereof, a foot inserting part having a predetermined minimum width located adjacent to the toe and progressively and symmetrically enlarged to a predetermined maximum width from the toe toward the back end of the sole, the foot inserting part having pressed bend lines extending slightly inside and along both edges thereof respectively to define the opposite marginal parts which may be spontaneously bent up when pressed to each other, a reduced part having both sides connected to the end of maximum width of the foot inserting part by edges extending with an acute angle from the end of maximum width of the foot inserting part to the reduced part on both sides thereof, a heel part progressively enlarged from the reduced part toward the back end of the sole.

Abstract: A turbine meter comprises an axle member supported by a support member within a conduit through which a fluid to be measured is passed and having a small-diameter axle part and an annular recess formed around the small-diameter axle part between a pair of opposed faces, a longitudinal flow passage formed in the axle member, a plurality of discharge holes formed in the axle member to connect communicatively the annular recess and the flow passage, a supply pipe inserted into the conduit through the wall thereof and functioning to supply a pressurized fluid from a pressurized fluid source disposed outside of the conduit to the flow passage in the axle member, a vane wheel comprising a hub disposed around the axle member and within the annular recess with minute gaps therebetween and adapted to rotate in a substantially non-contacting state relative to the small-diameter axle part and a plurality of vanes implantedly fixed at their root parts to the hub, the vane wheel being rotated by a portion of the fluid to

Abstract: An improved method of manufacturing a mesa type thyristor includes the formation, onto at least one face of a semiconductor substrate of a prescribed conductivity type of a ring or rings, of a deeply diffused region of the same conductivity type or that of the substrate but of a higher impurity concentration. As a result, the ring or rings of the deeply diffused region, surrounding the essential part of the thyristor, are, subsequent to the process of mesa-etching, exposed along the peripheral surface linking both faces of the substrate. The high-doped ring serves to effectively prevent an undesirable inducing of an inversion layer (i.e. channel region) across both surfaces of the substrate.