Abstract: An installation for the low temperature carbonization of waste under the exclusion of air with a low temperature carbonization cylinder, in particular device for after-burning of residual materials for the low-temperature carbonization installation, has an improved energy balance by carrying out a low-temperature carbonization so as to increase the ratio of internal energy requirement to energy release in favor of energy release. The carbon containing residual materials from the low-temperature carbonization cylinder are exposed to a complete after-burning on an inclined step grate and also a subsequent after-burning in a chamber. The burning gases for the burning devices of the step-grate are low temperature carbonization gasses obtained from the low-temperature carbonization installation. Gases from a waste heat boiler arranged after the after-burn chamber are utilized as heating gases for a low-temperature carbonization installation cylinder.

Abstract: Truncate processing is performed so that a new tone is not generated before the envelope waveform is finished but the new tone is produced after the volume of the previous tone is sufficiently diminished, by which the new tone can be produced with a satisfactory feeling of attack. Further, the envelope waveform is not abruptly interrupted and cleared in a moment but is decayed at a constant and high speed, thereby preventing the generation of noise such as a click. Moreover, demanded speed data is provided for each tone, by which it is possible to produce repective tones not at a demanded speed like the least common multiple but at an optimum speed for each tone and to make the previous tone generation proceed to the next tone generation without producing noise such as a click.

Abstract: The invention relates to a semiconductor body, which is composed of at least one semiconductor device, especially one impatt-diode, with integrated heat sink. The series of semiconductor layers, out of which the semiconductor device is produced, is made up of one first p.sup.+ -doped semiconductor layer, which has the function of an etching stop layer, of a contact layer and a buffer layer at the same time.

Abstract: A respirator comprises a respiratory air circulation unit with an adjustable displacement volume and a respiratory air supply line and a respiratory system comprising an inspiration loop, an expiration loop and valve elements mounted in these loops. The valve elements are controllable by means of a control unit, so that small as well as large displacement volumes can be executed by means of a single circulation unit with the smallest space requirements possible. For this purpose the inspiration phase is divided into several sub-phases, during which the control unit controls the valve elements and the respiratory air circulation unit 4 so that several fillings of the adjustable displacement volume are supplied to the inspiration loop and only then is the expiration phase initiated. Thus the displacement volume of the circulation unit can be kept small.

Abstract: A device for the identification of a code on a code carrier is composed of a light source, a code carrier with a plurality of light-permeable code-windows which provide polarization filters. The codification is manifested in different polarization and is composed of a receiving device with a ray splitting mirror for splitting light coming from the code carrier into two beam parts and also providing for each beam part one light sensitive detector. This device also has polarization filters interposed so that they face each other in crossed polarization direction.

Abstract: A disk grinding machine includes a grinding disk (5a), driven by a driving shaft. A handle projects laterally out of a machine housing and is covered by the machine housing. A dust suction installation with a suction hood is provided which covers the upper side of the grinding disk and overlaps its circumference. The installation contains a suction chamber having a bristle rim at its lower end which is fastened to the machine housing. The bristle rim extends only over a part of the circumference of the suction hood. The grinding dust is picked up through the area between the circumference of the grinding disk and the bristle rim and to the suction chamber (11a). The upper part of the suction hood is connected to the machine casing and a lower part of the hood is disposed pivotally and independent from the grinding disk and it supports a bristle rim. A handle for the machine comprises a control grip which is in a driving connection with the lower part of the hood through a drive.

Abstract: A column/beam joint structure, made of steel members, in which a reinforcing member formed into a flat plate or into a strip shape so as to surround the outer periphery of the flange is interposed between a flange having a vertical plane constituting the column and a base plate constituting a connector fixedly fitted to an end of a beam. The flange, the reinforcing member and the connector are integrally joined together via a connecting fastener member.

Abstract: A respirator mask for positive pressure respirator equipment comprises several peripheral seal edges around the face of the mask wearer. It must be assured that in case of possible leaks of the seal edges no respiratory gas, in particular respiratory gas with increased oxygen concentration, escapes into the open. To check that there are no leaks of respiratory gas past the seal edges, one of the sealing cavities defined by the seal edges in the mask is connected to a connecting line. This cavity defines a control chamber. A flow indicating device is connected to the connecting line and is placed so that it is visible to the wearer. A valve is positioned in a part of the mask bounding the interior of the control chamber. The valve can be actuated to permit the flow of gas, for example exhaled gas, into the control chamber and out through the connecting line and flow indicating device.

Abstract: The tape-like facing band is fitted annularly around the carcass (M) and the front surface of the casing is supported on said carcass, which is received in a containing structure (3) with a boundary edge (3B) from which the carcass and the facing band partially project; a guide rail (7,9) extends around said edge for a supporting carriage (20) which has orientable rollers (24) for passing over the curves at the corners and is motorized; a further trolley (42) is movable on said rails and connected to said supporting carriage by an articulation (40); a cutter (18) is capable of acting in a position in front of that of the stitcher.

Abstract: A helmet with a forward face opening and a downward neck opening comprises a hard outer shell and a custom fittable and split inner shell which fits the head of the wearer without play, is easy to put on and take off, and has a high degree of mechanical stability and provides optimal wearer comfort. For this purpose the inner shell is connectable with the outer shell and it has a fixed inner contour custom fitted to the wearer's head, a one-piece outer shell is slipped over and forms the closure for the inner shell.

Abstract: A harvesting machine for feeding seed plants such as grain into the machine includes a threshing unit and a sieve set for threshing the seed plant and for separating the seeds from the rest of the vegetable material. The seeds are removed from the machine and the residual vegetable material is removed. The threshing unit includes a drum and beaters or flails. The drum is conical and is fitted in the apparatus in a vertical position so that it widens from the bottom towards the top, and the flails are installed on the outer surface of the drum. The sieve set is formed of at least two sieves which are at least partly conical and are nested and a threshing space is located in between the drum and the sieve set. An outer shroud is conical, and the threshing unit and the sieve set are fitted inside the shroud and in between the sieve set and the shroud there is a collecting bin for the seeds and an opening is provided for removing them.

Abstract: An eyeglass frame and electroacoustic device combination for the improvement of natural hearing has temples that contain or carry electronic and electroacoustic devices. To enable persons with reduced hearing to again be able to follow a conversation in noisy surroundings, e.g. to concentrate on a partner during a cocktail party situation, to clearly understand speech in reverberant rooms, to concentrate on sound from a specific direction, to enjoy again theater and concert performances, each temple of the eyeglass frame comprises, directly at its front end, a directional microphone. The direction of maximum sensitivity extends to the front of the wearer, and its direction of minimal sensitivity faces toward the electroacoustic transducer at the rear end of the temple, near the ear of the wearer. This electroacoustic transducer is arranged at the rear end of the temple on an arm of a temple.

Abstract: Three sights are formed by a laser emitter system (10) and receiver system (5). The systems are disposed so as to be coaxial, the receiver system includes a photodiode receiver (5) which is associated with means for the amplification and electronic processing (7) of a signal, the signal consisting of sudden variations of the reflection of the emitter beam. A circuit arrangement (20) is provided for supplying the laser emitters for the emission of laser signals of a duration which is relatively short in comparison with the interval between two successive emissions.

Abstract: A double buffer system of a small storage capacity is employed for reducing the noise generation in musical waveforms. The operations of the buffers are utilized for performing an interpolation between waveforms and between successive sample points of each waveform, whereby the number of sample points of the waveform being read out is increased to smooth its level variation, producing a good quality musical tone as if it were obtained by quantizing the synthesized musical waveform.

Abstract: An illuminated display unit such as a house number, traffic sign, advertisement carrier and the like comprises a fluorescing or photoconductive plate adjacent an edge of which is fitted at least one light-emitting element, in particular a light-emitting diode. The edge is provided with a reflecting layer to prevent emergence of light. Display symbols or their negatives are arranged, as viewed by the onlooker, on the rear face of the photoconductive plate. As a result of the total reflection for a photoconductive plate on the front and back and on the reflecting layer at the edges, the light produced by the light-emitting diode can issue only at the contact surface with the display symbols, so that the light is concentrated very strongly there and a great display brightness is produced. This is even more effective when a contrast surface is arranged behind the plate.

Abstract: An electrical plug which has removable inner components and which may have on its rear end a pair of plug slots adapted to receive the prongs of a second plug. A fuse and a fuse conductor are removable from and insertable into a channel formed within the housing through respective openings in the housing wall. The conductor and its terminals are part of a conductor assembly which includes a resilient lip for a snap fit into the plug hosuing. The fuses are connected to a bracket or semi-bracket shape securing body that slides into the housing via a guide formed by the housing that connects with an upper arm of the bracket shaped securing body. The securing body fits tightly in the housing and provides a holding means for the connection between the conductor terminals, the fuses, and the prongs.

Abstract: A process for tempering tools, for use on the form tools of extrusion forming machines. In the injection molding tools there are conduction circuits for a coolant which are connected to ducts for the inflow and backflow of the coolant. Valves (4) control the throughflow of the coolant. There are temperature sensors (5, 6) in the ducts for the inflow and backflow of the coolant. The temperature sensors (5, 6) are connected to a computer (7) which controls the opening and closing times of the valves (4) as a function of a nominal difference fed in between the inflow and backflow temperatures of the coolant. Advantageously, a temperature sensor (3) which is also connected to the computer (7) is provided on the form tool.

Abstract: A method for the position detection of the strip edge of a material web by means of an ultrasonic detector disposed in the strip edge region uses a transmitter 2 and a receiver 3, the received sound waves being transformed into an electric signal. To be sure to eliminate the influence of reflected waves on the measurement result, the transmitter 2 emits mutually time-shifted single pulses or wave packets. The wave packet (or single pulse) received by the receiver 3 is transformed into a corresponding electric oscillation packet, a limited area of the oscillation packet is scanned and the scan value is stored for further processing. An arrangement for the performance of the method comprises the transmitter 2 which is fed by a pulse train generator 4 the receiver 3 for delivering an electrical signal, an activatable peak rectifier circuit 6 connected to the receiver and an activatable transmission circuit 9 connected to the rectifier for transmission of the peak value to a memory.

Abstract: A disc wheel sanding machine includes a disc wheel rotated by a drive shaft. The sanding machine has a dust extraction device with a dust extraction hood comprising an extraction chamber which surrounds the disc wheel. The hood of the dust extraction device ends above the disc wheel bottom, and a closing wall in the form of a bristle ring or such like protrudes from the bottom of the hood and can be positioned on the work piece. The bristle ring only encircles a part of the periphery of the disc wheel and forms a suction slot diverging outwardly toward the front end in the direction of rotation of the disc wheel and is open toward the work piece. The sanding dust is sucked through the suction slot at the disc wheel periphery into the extraction chamber. The rear end of the bristle ring with regard to the direction of rotation closes in on the disc wheel periphery and forms a rear seal for the suction slot.