Abstract: A rotary blow molding machine includes a rotor mounted on a horizontal driving shaft, a recovery hopper, an ejector mechanism, and mold stations mounted on the outer periphery of the rotor, which mold stations are radially disposed and circumferentially equally spaced, the mold stations each carrying thereon a split mold unit capable of opening and closing in the direction of the width of the outer peripheral surface of the rotor by a mold opening/closing mechanism, a mold clamping mechanism and a flash blow-pipe, the said split mold unit having a mold-release mechanism. It is so constructed as to produce blow moldings successively continuously at high speed and completely automatically during a single rotation of the mold stations on and along the same circular rotation track.

Abstract: A sampling device for a quantitative determination of hydrogen in molten metal, which includes a material in which hydrogen is relatively non-diffusible during testing or readily soluble during sampling and a refractory vessel housing this material. This refractory vessel is sealed so as to maintain a vacuum or negative (reduced) pressure therein, and is provided with a thin-walled aspirating portion which is readily destroyed by an external pressure.

Abstract: A partial response system useful in binary data communication systems is disclosed. The partial response system includes a transmission system adapted to provide an output having a frequency spectrum substantially given by 2j sin ?.omega.T/2.multidot.k! in response to a single pulse input of pulse width T. A precode-converter is provided at the input side of the transmission system, and a waveform converter is inserted between the pre-code-converter and the transmission system. The frequency spectrum of the output of the waveform converter in response to a single pulse applied to its input is substantially equal to either 2j?(1 -cos ?(.omega./2.multidot.T!)/.omega.! or 2j(1-cos.omega.T)/.omega.. The transmission system includes a waveform shaping filter having a transfer function represented substantially by either ##EQU1## Since the filter characteristic involves only an amplitude-characteristic, the design of the filter is greatly simplified.

Abstract: A corona discharger includes a shield and a discharge wire extended between opposed ends of the shield and supported between its ends. The position of the wire is adjustable to control the distance between the wire and a surface of a member to be subjected to the corona discharge and a spring is arranged to maintain tension on the discharge wire regardless of the position of adjustment of the wire.

Abstract: A mold for continuous casting made of a copper alloy having been subjected to 15 to 40% cold working, said alloy consisting of copper as main constituent and an addition of 0.18 to 0.85% by weight of tin, and, if desired, several other metal components, the alloy having a high softening temperature and high-temperature strength, whose numerical values are given by specific formulas in which the thermal conductivity .lambda. is a determining factor which, in itself, is dependent on the construction of the mold, operating conditions etc.