Abstract: An integrated manual brake device on a brake actuation unit, particularly for rail vehicles, and it includes a hydraulic or pneumatic cylinder. The brake actuation unit contains a linkage setter including two parts displaceable relative to each other in a telescopic fashion. One of the parts is formed as a threaded spindle and the other tubular part is firmly connected with a nut which is screwed on the spindle with a nonselflocking thread. A stop is provided on the tubular part fixed in an axial direction but easily turnable. An actuating spring is clamped between the piston and the output part.

Abstract: A support bearing with fluid damping in a housing which includes two chambers which are of variable volume and filled with a fluid, and are interconnected by a passage with a built-in restrictor valve. The housing includes rubber-elastic inner and outer walls of different degrees of hardness which are fastened to metallic support members. One of the supports is connected with the foundation and the other with the part (engine) to be supported. One chamber surrounds the other chamber circularly and a passage interconnects the chambers. The walls defining the chambers are incorporated in a housing connected to a support member. The elements comprises a rubber-elastic material and are formed in one piece and are firmly connected with the one supporting member, as well as with a support ring, which is advantageously connected with the other supporting member by mechanical means.

Abstract: A nozzle head of thermoplastic material injection nozzle is closed in the customary manner with a closure head which has a jet orifice. A jet needle closes the jet orifice in a closed position. The needle is held axially displaceable in a needle bearing. An actuation lever is set into a slit-like recess in the needle bearing and it is supported with a bearing ball carried at the rear wall of the needle bearing. A stroke transmission bolt set inbetween jet needle and actuation lever in overhung position serves for transmitting the closing force from the actuation lever to the jet needle. Upon opening, the injection pressure pushes the jet needle rearward if the actuation lever is rotated into the open position. In this arrangement a locking spring becomes superfluous and, consequently, no force counter to the spring force must be effected by the injection force.

Abstract: A device for enriching a fluid with ozone includes an inner tubular member arranged within an outer tubular member and defining a separate flow path for a fluid within the inner tubular member and another one for a fluid between the inner and outer tubular members. An electrode which has a high voltage regulation and a coil portion which extends through the inner tubular member forms a grounding electrode. A fluid such as air which is to be enriched with ozone is passed either through the inner tubular member or the space between the two tubular members and a cooling fluid is passed in the other tubular member. The inner tubular member is made of an ultraviolet penetrable and heat resistant material such as quartz glass.

Abstract: A rotor for miniature motors having an annular spark-quenching element for suppressing electrical sparks generated between commutator segments and brushes, in which the commutator segment is composed of a commutating portion coming into sliding contact with the brushes, and a terminal portion connected to a lead wire of a rotor winding; the terminal portion having an element-retaining portion on which the annular spark-quenching element is mounted; and the annular spark-quenching element being electrically connected to the element-retaining portion, as mounted thereon.

Abstract: The invention relates to a coke dry cooling chamber with vertical outer walls constructed as cooling walls and parallel vertical cooling walls positioned in the cooling chamber, with supporting walls running crosswise to them. Pursuant to the invention, the cooling walls and supporting walls taper as they descend and the different coke cooling shafts created by them correspondingly broaden as they descend. A particular embodiment of the invention provides that diaphragm pipe walls constructed as cooling walls are equipped with flat outer abrasion plates. The space between the diaphragm walls, embodied in a pipe-stay-pipe construction, and the abrasion plates is filled with a highly heat-conductive material, graphite, for example.

Abstract: The present invention relates to an automatic telephone answering device with an automatic switching mechanism for switching between an automatic answering mode and a two-way conversation recording mode. When a telephone is put into an off-hook condition for a direct conversation with a calling party while the automatic answering mode is in a standby condition or in operation, such an off-hook condition is detected by a current detector and the conversation is recorded on a recording tape without any limitation of time. When the telephone is put into an on-hook condition during the recording of the conversation, the current detector or a voice signal detector is operated to stop the recording operation, and then the device is automatically brought into a standby condition for the next call.

Abstract: A device for decomposition of a multicomponent gas, especially air, and its enrichment in at least one component, whereby a supply gas line connects a gas source to a first device having a separation forechamber, and a second separation chamber. A branch line is connected to the forechamber from which a secondary product gas can be removed. Each of the separation chambers can be operated in the favorable pressure range for an effective separation, especially when operating at low supply gas pressures. The configurations of the separation chambers are oriented to the required demand for the individual components. Also, the efficiency of a permeation device having a permeation chamber and a retentate chamber is improved. For this purpose, the separation forechamber and the permeation chamber are operated in parallel and both are supplied with feed gas, whereby the permeate chamber of the permeation device can be flushed with the waste gas from the separation forechamber across the branch line.

Abstract: When the mold of plastic injection molding machine is locked, the closing force (K) is measured at the knuckle joint system during a predetermined number of operating cycles (Z). A mean value is computed from these actual value measurements (Si) and if it is within a predetermined tolerance zone (T) around a set-point value (So), no control intervention takes place. But if this mean value is outside of the tolerance zone (T) but in a control zone (R) limited by alarm limits (A), a control intervention takes place by stepwise changing the installed height of the mold until the actual value measured after each operating cycle is again within the tolerance zone (T). The measurement is repeated over another operating period (B); if those measurements stay within the control zone (R), a new mean value is computed only at the end of this operating period and a corresponding decision is made whether or not a control intervention should take place.

Abstract: A process and a device for cleaning inner or outer walls of vertically extending or inverted tubes of heat exchangers and especially for cleaning tubes in trash incinerators. The process involves imparting kinetic energy to the tubes in an axial direction and then suddenly stopping the tubes to shake loose dirt and the like. The device for the process includes arranging a plurality of rows of vertically extending tubes such that the tubes move upwardly and downwardly in the direction of the axis of the tubes. The tubes advantageously include their own lower distributors and upper headers. These distributors and/or headers rest on a movable cam or cam plate which, for example, may be rotated so that a radially extending offset of the shoulder of the cam permits the cam to lift the upper headers upwardly to a height at which point they are suddenly dropped.

Abstract: A filter case for respiratory masks, in which filter inserts are held replaceably by a holder engaging in the case wall, is improved so that filter inserts of different structural heights and in various combinations can be fastened in it with the same holder. For this purpose, the holder includes a sleeve open at both ends surrounding a filter insert that can be fastened to the inner wall of the filter case and can be moved axially by a fastener necking inward at one of the end circumference of the sleeve. A respirator mask filter holder, comprising a casing having a wall with a tubular side, a sleeve 2 engaged in said tubular said 1 and being axially moveable therein, a filter cover having replaceable filters therein and having a projecting lip, and a fastener collar carried by said sleeve and engageable with said lip upon with said lip upon inward movement of said sleeve to position said filter case against said end wall.

Abstract: Method for reflow soldering respectively desoldering of circuit boards by using infrared radiation from radiator groups in a furnace. The circuit boards are introduced into the furnace on a timed belt or work piece carrier and maintained motionless during the prewarming, soldering respectively desoldering and cooling down phase. For prewarming for a first given time the radiator groups are operated with reduced operating current. For reflow soldering respectively desoldering the operating current of the radiator groups is switched for a second given time to a maaximum given stage and subsequently turned off completely. The soldered respectively desoldered circuit boards are cooled in a laminar air stream from ventilators for drawing off the solder vapors; the ventilators are initially operated with reduced number of rpms until the solder solidifies and then at the maximum number of rpms. Subsequently, the circuit boards are moved out of the furnace.

Abstract: A speed control device for d-c motors includes an IC control circuit having such a construction that a reference voltage is generated across two of its terminals C and D. Additionally, a current proportional to the armature current of the d-c motor is kept flowing in the terminal D at all times. A transistor is connected across the terminals C and D of the control circuit so that motor revolution can be changed linearly by means of a variable resistor connected in parallel across the base and collector of the transistor. With this arrangement, the revolution of d-c motors can be accurately controlled.

Abstract: A method and apparatus for controlling the surge limit of a turbocompressor utilizes continuously measured pressure and temperature values at the suction and outlet sides of the compressor. A relief valve connected to the outlet side of the compressor is controlled as a function of the distance between a working point and a surge limit line or blow-off line of a characteristic graph produced by characteristic graph coordinates that are computed using the pressure and temperature values. The actual value of another operating parameter that is independent of the pressure and the temperature values, such as the speed of the turbine for the turbocompressor, for example, is used. This operating parameter defines a family of characteristic lines on the characteristic graph. A set-point value for the characteristic graph coordinates is then obtained using the characteristic line of the operating parameter which passes through the working point.

Abstract: When controlling a turbocompressor to prevent pumping there is generated a control signal which controls a blowoff or recycle valve attached to the compressor outlet by continuously monitoring the working point or operating condition coordinates and comparing the coordinates with a blowoff line defined by operating conditions producing a pumping. Upon the occurrence of a pumping surge, a signal is generated which can control for instance the quick opening of the blowoff valve. In addition, according to the invention the signal generated upon the occurrence of a pumping surge is also utilized to initiate a new fixation of the blowoff line or the pumping limit line.

Abstract: This machine comprises a carriage movable in translation and in oscillation in a direction parallel to and perpendicular to a shaft carrying trimming and bevelling grinding wheels, and further comprises a tracer (7) adapted to come in contact with the edge of a trimmed blank (3) of the glass in a direction perpendicular to this edge, and adapted to measure the distance L1 of the edge of the front side of the glass (3) relative to the edge of a planar glass in respect of which L1=0, and the value L2 which corresponds to the thickness of the edge of the glass. The tracer (7) has a curvature which is identical to and concentric with the curvature of the grinding wheel (4, 11) and formed by a plurality of parallel elements (9) acting on a sensor (10).

Abstract: Apparatus and method of positioning and holding a thread chain for sewing onto successively fed workpieces, a thread chain which had been sewn beyond the rear edge of a workpiece and had been cut off flush with the rear edge of the workpiece, is sucked into the suction aperture of a suction tube. The suction tube is movable in a path parallel to the stitch plate of the sewing machine first in a catch position behind the needle and then the tube is moved into a delivery position before the needle aligned with a seam line (N). The chain is clamped there under a tensile stress in such a way that complete inclusion of the thread chain into the next following seam is possible. The suction tube extends parallel to the stitch plate and has a suction aperture into which the severed thread chain is sucked. The tube is moved to a delivery position in which the thread chain is pressed against an elastic abutment.

Abstract: A heater plug is cooled with combustion air for diesel oil-burning heating appliances, especially those provided with a vaporizing burner. The plug is screwed into a burner pipe joint, enclosing but spaced inwardly of the plug. The pipe joint also has inlet for supplying the fuel, and it is fastened to the furnace wall of the heating appliances. The burner carries a continuous lengthwise bore, accessible from one end face and opening into the heater plug coil, the inner end of the bore being connected to the combustion air channel across a proportioning throttle.

Abstract: A filter arrangement for cleaning the interiors of ventilated vehicles, containing a coarse dust preseparator, a submicron particulate filter, and a gas filter, is to be improved so that the necessary filter lifetime can be adapted to the gas filter lifetime and a changing of the filters is necessary only when both are used up at approximately the same time. For this, a coarse dust preseparator or cyclone filter of high separation efficiency is mounted on an outer housing, downstream from which is at least one submicron particulate filter accommodated in a common filter housing and a gas filter as a filter module.