Abstract: The present invention is directed to an electronic musical instrument which has a circuit for calculating a harmonic function corresponding to a fundamental wave. The electronic musical instrument is provided with a circuit for generating, as the harmonic function, an in-tune function corresponding to an in-tune harmonic, a circuit for generating a phase function which imparts an arbitrary frequency number log to the in-tune harmonic and a circuit for multiplying the in-tune function and the phase function, whereby a tone close to a natural tone of an acoustic musical instrument can be created at a relatively low cost.

Abstract: A monotrigger mechanism is disclosed for double-barrelled guns, such as trapshooting guns, in which guns the hammers, their respective springs, levers, trigger and pendular mass are all premounted on an underguard. The trigger is longitudinally positionable and the coupling of the underguard is effected by means of an oscillating lever controlled by the safety sled, which is mounted on the upper portion of the breech of the gun and interacts with the trigger.

Abstract: Disclosed is a device for the rapid engagement and disengagement of the monotrigger mechanism in the breech of a double-barrelled gun. A hook is integrally provided in the underguard that carries the monotrigger mechanism. An oscillating lever, pivoting in the breech has a tooth that interacts with the said hook, so as to block and unblock the monotrigger mechanism. The lever is kept in operative position by a spring and is moved into an inoperative position by the disengagement of the monotrigger mechanism from the safety sled.

Abstract: A method and apparatus for improving the grinding result of a pressure chamber grinder includes a feeder for feeding material into a pressurized equalizing tank, then transferring the material into a pre-grinder where the material is fluidized by grinding-gas jets. The fluidized material-gas flow is divided by a bisecting device into two component flows and it is accelerated through two accelerating nozzles which are directed toward a impact point of a main grinding chamber. The grinding chamber has an outlet connected to an acceleration tube inlet which is connected at its discharge to a free-flow grinder provided with tangentially directed grinding-gas nozzles. The material which passes through the nozzles is in a ready ground final product form is removed constantly through a centrally located exhaust pipe.

Abstract: A protective breathing apparatus with breathing air circulation and addition of oxygen alone through a lung-controlled valve is to be improved so that no oxygen depletion of the breathing air in the circulation occurs, even if the breath volumes are small, and that preflushing the circulation with oxygen before applying the protective breathing apparatus is unnecessary. In addition to a breathing bag space, a storage space, unfoldable during the exhaling phase and unchangeable during the inhaling phase, is provided in the circulation.

Abstract: A joy stick including a housing having a ball joint. A lever having a pressing part extending radially outwardly is mounted on the ball joint. A plurality of push rods are mounted in the housing and are urged upwardly by a spring for engagement with the pressing part of the lever. The plurality of potentiometers are connected to the housing. Each of the potentiometers corresponds to one of the push rods. Each potentiometer has associated therewith a slider element which is urged upwardly into engagement with a lower portion of each of the push rods. Each of the potentiometers is linear having a zero voltage output when the push rods and slider elements are in their uppermost positions and the lever is in a neutral position.

Abstract: In magnetic bearings and magnetic suspension devices, sensors (4), as they are used for bearing regulation of support and guide magnets in magnetic transportation technology, continuously measure the distance of a magnet (6) from a reaction rail (7), in order to obtain a signal with which the magnet (6) is controlled with regard to the energizing current in such a way that it remains suspended at the predetermined distance. In known devices, there is no accurate monitoring of the sensor signal, which can result in faulty regulation of the excitation if the sensor signal is faulty, which represents a significant safety risk.

Abstract: A splice cassette housing for optical waveguides has to be brought from an installation position, e.g. a socket-type housing, to a splice position. The incoming and outgoing optical waveguide cables fed with known splice cassette housings along the longitudinal sidewalls are disadvantageous for the free mobility of the splice cassette housing. In order to achieve a high degree of freedom in the mobility of the splice cassette housing, the incoming and outgoing optical waveguide cables 8 and 9 are usually fed separately from each other to the splice cassette housing in a common axis within a flexible hose. Further, a groove-type guide channel 11 in the shape of a member "9" is provided in the bottom 6 of the housing for a change in direction of one of the optical waveguide cables by 180.degree., in order to be able to feed the individual optical waveguides again from opposed directions to the splice position.

Abstract: A spring compressor for large coil springs especially for motor vehicle axle springs comprises first and second disc-like pressure plates which are located at spaced locations along the axis of a cylindrical guide tube and each has a central bore opening. A threaded spindle has a spindle head with a key profile and it is rotatably mounted in an axial thrust bearing of the cylindrical guide tube. The guide tube has a radial support surface on which one of the pressure plates is supported. A cylindrical threaded tube has internal threads insertedly engaged with the threaded spindle and the spindle is connected to the guide tube with an axial mobility so as to rotate with the guide tube. The threaded tube has an end which faces away from the spindle head which has a plurality of radial fingers which fit into corresponding recesses formed in the first pressure plate which includes radial enlargements which form passages for the radial fingers carried by the threaded tube.

Abstract: The apparatus comprises a rotary plate (1) on which are provided receptacle receiving means (2, 3, 4, 5) disposed at 90.degree. to one another. The plate is driven in rotation in 90.degree. steps by a motor-speed reducer unit (6) so that the receiving means pass in succession in front of a station for charging product into the bottoms of the receptacles, a station for laying lids of the receptacles, a station for welding the lids to the bottoms of the receptacles and a receptacle discharging station. The receiving means comprise means for maintaining the lids spaced away from the bottoms of the receptacles and means for injecting neutral gas between the lid laying station and the lid welding station.

Abstract: A glow plug for diesel engines includes a ceramic heater with a U-shaped heating portion and a pair of leads integrally formed with the heating portion and extending backwards from both ends of the heating portion. The heater is supported at one end thereof by a hollow holder in a cantilevered state with one end thereof protruding towards the outside. At least the outside surfaces of the leads are joined to, and held by, the inside of the holder via an insulating layer, and at least the rear ends of the other of the leads are connected via a metallic lead wire to an external connection terminal supported in an insulated state by the rear end of the holder. The ceramic heater is integrally formed from an electrically resistive sintered sialon produced by adding 20-70 vol. % Ti nitride or carbonitride as an electric conductivity donor to .beta.-type sialon or a .alpha./.beta.-type sialon.

Abstract: A method for manufacturing thin-walled hollow bodies comprising concentric layers forming thin-walled structural parts of chemical installations subjected to stress at high temperatures, thereby replacing non-layered pipes of single-metal materials. Due to the methods of manufacture, structural parts of these single-metal materials have disadvantages because the single materials of which they are built cannot simultaneously satisfy the demands of corrosion resistance, high-temperature stability and resistance of scaling. According to the new method, for example, thin-walled pipes of concentric, non-corrosive, high-temperature stable, and non-scaling material layers are intended to be produced. For the non-corrosive inner layer, for example, a conventional thin-walled pipe is used.

Abstract: A device for counting objects being transported by transport equipment includesa light projector for projecting a light beam onto the objects being transported,a light receptor for receiving the light beam reflected from the objects being transported and focusing the beam to a point, anda pulse generating means for generating pulses in accordance with the abrupt shift of the focused point of the reflected light beam caused by the ends of the objects being transported.The objects being transported are counted on the basis of the pulses generated by the pulse generating means.

Abstract: A motor comprising a small case having at the center thereof a cylindrical bearing housing for housing a bearing, and at the edges thereof holes through which brush holders receiving and supporting motor terminals connected to brushes extend. A large case forming a motor housing, a earth plate comprising a base having at the central part thereof a contacting and mounting hole into which the bearing housing is inserted and press-fitted, a neck extending from the base flush therewith, an arm extending from the tip of the neck at right angles to the plane of the neck and being inserted into a motor terminal hole on one of the brush holders and a contacting curved portion for making electrical contact with the motor terminal. The earth plate is installed onto the small case by press-fitting the base from the outside to the bearing housing, and press-fitting the arm into the motor terminal hole so as to make electrical contact with the motor terminal.

Abstract: An electromagnetic interference shielding cover for computer terminals or the like comprising a layer of woven metallic or metallized synthetic conductive fabric covering the computer terminal top side, bottom side, right side, left side, front side and rear side. The embodiments described provide full electrical and magnetic continuity throughout the shielding cover and can take the form of a free standing box-like rigid cover, or a fitted flexible cover. Woven metal or metalized conductive mesh conditioned for viewing enchancement and glare reduction is provided in an individual, framed section and connected over appropriate cut-out openings to allow continuity of electromagnetic shielding and visual access.The shielding cover may consist of a single enclosure or where appropriate, multiple enclosures connected by means of an electro-magnetically continuous joint allowing console articulation.

Abstract: In a load-sensing proportion valve including a control valve disposed in a hydraulic fluid passage extending from a master brake cylinder to rear-wheel brake cylinders, a plunger adapted to operate the conbtrol valve in response to the output fluid pressure from the master brake cylinder, and a stem formed integrally with a load-sensing lever and adapted to urge the plunger to open the control valve in accordance with a current load of a vehicle, a resilient member is interposed in a working position between the plunger and the stem so as to prevent the occurrence of noises from possible contacts between these plunger and stem, when set together.

Abstract: In order to achieve a delay time as constant as possible, an interspace is provided between a pyrotechnic delay composition and the delay tubule.

Abstract: To avoid, after excessive shocks in the underframe in the forestructure and at the coupling of a traction/thrust pivoted joint or device of a vehicle, deformations of a central buffer coupling at the underframe of the vehicle is proposed. Arranged between the carrier plate for the support of the traction/thrust device and the coupling uptake at the underframe in each instance is a shock absorber which in case of excessive shocks becomes deformed elastically and/or plastically and permits a deformation path preset for the force acting at the time.

Abstract: A device for treating plastic parts for use in dental and orthodontic applications includes a pressure receptacle which has walls which define a hollow interior with an opening which is closable by a cover or lid. A support for material to be treated is placed within the hollow interior at a spaced location in the interior walls and adjacent a heating device which is advantageously an electric heating element. The device includes a rotatable fan which is advantageously mounted on the vessel as a shaft which extends through the vessel interior and carries a rotatable fan which is rotated so as to direct a gas such as air past objects held on a support and past the heater which maintains the circulating gases at a temperature which permits polymerization of the parts. The heating air is continuously circulated and it is heated by the heater sufficiently to maintain a selected polymerization temperature.