Abstract: Benzothiazolylsulfenamides are prepared in a high yield and substantially without a side reaction, via direct electrolytic oxidation, by cross-coupling (1) 2-mercaptobenzothiazole or dibenzothiazyl disulfide or an alkali metal salt of 2-mercaptobenzothiazole with (2) a primary or secondary amine, in the presence of a solvent selected from a dipolar aprotic solvent, a protic solvent, water and mixtures thereof, as well as a supporting electrolyte having adaptability to the solvent.

Abstract: A contact device for an electric switch comprising at least two interconnectable contacts and at least two contact knives movable relative thereto and adapted, in the closed position of the switch, to clamp between themselves at least one of the contacts. The contact knives are enclosed in pairs by iron elements or similar which, when a short-circuit current passes through the contact knives, act as a magnets increasing the contact force.

Abstract: A process for forming a continuous footing for building a house comprising digging trenches in accordance with the layout of a house to be built, forming a rubble and gravel bed in the trenches, placing a plurality of leveling pieces on the bed and leveling only the leveling pieces by laying sand thereunder, placing footing blocks on the leveling pieces so as to bridge them, pouring gravel in the trenches, compacting the gravel and rubble so that they are tightly compacted under the footing blocks up to the bottom of the footing blocks, thereafter removing the leveling pieces, and finally placing gravel in the spaces which have been occupied by the leveling pieces and compacting the gravel under the joints of the blocks, is disclosed.

Abstract: A process is disclosed for the treatment of spun protein fibers which comprises carrying out one or more of the fiber coagulation, fiber stretching, fiber neutralizing or washing steps in a treatment bath fluid which contains as treating agents for the fibers, one or more of the following: a nitrogen-containing organic acid or salt or nitrogen-containing organic buffering agent, which may or may not be permitted to remain in the finished fibers, in a concentration effective to provide the principal buffering capacity in the treatment bath fluid.

Abstract: Pyridoxin derivatives of the general formula: ##STR1## wherein Y is described herein for use as antineuritics and analgesic drugs.

Abstract: The invention provides a device for activating a passenger restraining system in a vehicle comprising, a dash-pot assembly arranged to be operatively mounted between the vehicle structure and a bumper on the vehicle, the dash-pot assembly including a cylindrical tube, a closure across the tube and a piston movable in the tube to form with the closure a chamber for pressure fluid in the tube, throttle means in communication with said chamber arranged to control exit of pressure fluid from the chamber and to damp movement of the piston relative to the tube whereby to dissipate energy, and a sensor mounted as an assembly with said tube, the sensor including an electrical switch operable in response to fluid pressure in said chamber.

Abstract: An internal combustion engine spark ignition system includes a transducer and a transducer circuit which coact to produce a rectangular pulse for each spark required. The leading edge of this pulse controls an input transistor which controls an output transistor through an intermediate transistor. The output transistor in turn controls an ignition circuit controlling the current through an ignition coil. The coupling between the intermediate and output transistors includes a resistance chain to points in which two timing capacitors are connected. At high speeds the circuit provides a fixed coil current duty cycle with a relatively short off time, whereas, at low speeds the duty cycle is determined by the length of the pulses from the transducer circuit giving a relatively long off time.

Abstract: New piperazine derivatives and homologs thereof of formula ##STR1## wherein n is equal to 2 or 3 and m to 1, 2 or 3; X REPRESENTS HYDROGEN OR A METHYL GROUPR represents hydrogen or a C.sub.1 to C.sub.6 lower alkyl group or a C.sub.1 to C.sub.3 hydroxyalkyl group; andR.sub.1 is one of the following groups:A substituted cyclohexyl of formula ##STR2## wherein R.sub.2 is hydrogen or a C.sub.1 to C.sub.6 lower alkyl group, A SUBSTITUTED PHENYL OF FORMULA ##STR3## wheein R.sub.3 is hydrogen, methyl or ethyl, OR WHEREIN R.sub.1 is norbornyl, bornyl or cinnamyl, are useful as antiulcerous compounds.

Abstract: In a digital type electronic musical instrument, a glide effect is produced by digitally frequency-modulating the frequency of a musical tone in such a manner that the frequency changes quickly and smoothly. Glide information used for effecting this frequency-modulation is produced on the basis of a glide code obtained by counting a clock pulse. The glide information which changes its contents uniformly is multiplied with the basic frequency information to effect the frequency-modulation. The glide effect can be controlled for each individual keyboard. According to an embodiment of the invention, the frequency-modulation is applied to an attack portion of a musical tone only and sustain and decay portions of the musical tone are reproduced with a normal frequency so that the musical tone will be provided with a crisp, vivid musical effect.

Abstract: A composite resonator according to the invention is made of a combination of ferrite and dielectric, a combination of ferrite, dielectric and conductor or a combination of ferrite and conductor.

Abstract: A circuit arrangement for obtaining a periodic sawtooth current in a coil, particularly in a deflection coil of a kinescope, is described. The circuit arrangement comprises a first, unidirectional conductivity device, disposed in parallel to a circuit branch comprising the deflection coil, and a second, controllable switching device, having a control electrode connected to a source of periodic pulses which render conductive the second device during a part of the period of the sawtooth. The main feature of the circuit arrangement is to comprise a resonant series circuit disposed in parallel to the second device; the second device and the resonant series circuit are connected to the deflection coil and to the first device at least through a third, unidirectional conductivity device.

Abstract: Silicon carbide sintered moldings having a high strength and a high oxidation resistance at high temperatures are produced by mixing SiC matrix powders with a binder consisting of an organosilicon high molecular weight compound having silicon and carbon as the main skeleton components and containing at least one foreign element other than silicon, carbon, hydrogen and oxygen, molding the mixture into the desired shape and baking the formed molding at high temperatures.

Abstract: A manhole or a catch basin is built up by stacking a number of pre-cast concrete units. The joints between the units are provided, prior to stacking, with a bead of a non-hardening, semi-liquid, mastic waterproof layer to enable subsequent removal of the units without damaging same. The pre-cast concrete unit of this invention is typical by having cutouts in the side wall and corresponding protrusions extending from one face thereof. Hand or tool receiving depressions are provided in one surface of the unit to facilitate the handling of the unit when increasing or reducing the overall height of a manhole. The shape of the unit not only facilitates the production of same but also assists in convenient handling. Due to generally smooth faces, the steaming-off of the waterproof layer prior to the storage of a removed unit is also facilitated.

Abstract: Improvements in apparatus for the manufacture of a cable by laying or assemblying pre-twisted outer strands around a pre-twisted core. For smooth transmission of the pre-twist through the core length from a pay-out reel to a laying die, a series of interspaced pairs of opposed guide rollers are disposed along the path of the core to engage the same therebetween. Further, for smooth transmission of the pre-twists through the lengths of the outer strands from respective pay-out reels to the laying die, a series of interspaced tapered guide rollers are disposed along a curve in the path of each outer strand. At least some of the tapered guide rollers are set an an angle to the axial direction of the outer strand being fed thereover and, preferably, further to the direction normal to the vertical plane containing the curve in the outer strand path.

Abstract: A process for producing a tetraalkylthiuram disulfide which comprises electrolytically oxidizing a dialkylammonium dialkyldithiocarbamate having the formula ##STR1## wherein each R represents an alkyl group having from 1 to 4 carbon atoms, in the presence or absence of a supporting electrolyte to produce a tetraalkylthiuram disulfide, the electrolytic oxidation being carried out in one or more solvents which dissolve at least one of the starting dialkylammonium dialkyldithiocarbamate and the resulting tetraalkylthiuram disulfide.

Abstract: A clamping mechanism for temporarily clamping cables and the like for the purpose of tensioning or stressing such cables comprising a clamping wheel rotatably mounted at a carriage. A plurality of guide elements for the cable to be tensioned arranged about the periphery of the clamping wheel. These guide elements each comprise two clamping jaws. The clamping jaws of each pair can be pressed against one another by the force of spring means in order to fixedly clamp a section of cable disposed therebetween. Means controlled by the rotating clamping wheel are provided in order to release or eliminate the clamping action of the cooperating pairs of jaws for selectively receiving and releasing the cable at predetermined portions of the revolving path of travel of the clamping wheel. As control element there is employed a single large roller which is eccentrically mounted with regard to the axis of the clamping wheel.

Abstract: An optical glass consisting essentially of a B.sub.2 O.sub.3 --La.sub.2 O.sub.3 --Gd.sub.2 O.sub.3 --WO.sub.3 --ZrO.sub.2 and/or Ta.sub.2 O.sub.5 system has high refractive and low dispersive characteristics with optical constants of 1.85-1.96 for Nd and 43-28 for .nu.d, is free of poisonous ThO.sub.2, CdO and BeO ingredients, and suitable for mass production.

Abstract: An improved process is provided for simultaneously drawing and false-twist texturing of partially oriented polyester yarn. The process is of the type wherein the yarn from a supply source is passed through a yarn feed system; a heating zone in which the yarn is heated to a temperature of from about 175.degree. to about 235.degree. C; a cooling zone in which the yarn is cooled to a temperature below about 80.degree. C; a false-twisting means; and take-up means whereby the yarn is drawn to a desired draw ratio; to winding up means; and is characterized in that the yarn emerging from said heating zone and before entering said cooling zone is passed through a heat-maintenance zone, in which the yarn is maintained at a temperature and for a time sufficient to permit substantially complete crystallization of the yarn so that the fully-drawn textured yarn product has a tenacity of at least 3.5 gram per denier. Apparatus for carrying out said improved process is also provided.

Abstract: A dynamo electric machine wherein a hollow rotor shaft carries cooling oil, there being outlet means in the wall of the hollow shaft whereby the oil is discharged from the shaft onto the windings of the machine to cool the windings. The outlet includes a hollow tubular screw which extends through the rotor shaft wall and which protrudes inwardly from the inner surface of the shaft so as to receive oil from a region of the shaft interior which is spaced radially inwardly of the inner surface of the shaft. The hollow screw discharges oil at the exterior of the shaft into an annular weir member which is carried by and encircles the shaft and from which oil is thrown onto the windings of the machine to cool the windings. The hollow screw in addition to defining the oil outlet from the shaft serves at least in part, to secure the weir member to the shaft.

Abstract: The system comprises a frequency number memory device for storing information regarding the frequencies of respective tones, a keyboard switch for reading out frequency number information corresponding thereto from the memory device, an address generator including an adder for adding a predetermined number of the frequency number information thereby producing an address signal consisting of plural bits, address composers for processing the bits of the address signal and thereby composing digital tone signals constituting a saw-tooth, square and triangular waveshape, and digital-analog converters for converting the digital tone signals into analog tone signals, which are thereafter used to synthesize waveshapes of any tone.