Abstract: The device serves to control the desired lifting and pressure-containing movements of strip pressure rolls for the reels which serve to store hot rolled strip. These reels have a rotating mandrel. The pressure rolls are actuated by piston and cylinder units for positioning the rolls electro-hydraulically in conformity with signals which indicate the relative position of the leading strip edge which rotates with the mandrel. The positioning of the roll, by the lifting and pressure-contacting movements, is effectd by position control with subordinated pressure control in a closed-circuit position control loop and a closed-circuit pressure control loop, by input of a setpoint position value which corresponds to the respectively prevailing pressure-contacting and lifting position of the pressure rolls, and by establishment of limited setpoint pressure values for both functions or directions of movement.

Abstract: The apparatus for making textile fiber strands has a principal drive unit and at least one auxiliary drive unit. At least one alternating current motor of the principal drive unit is provided with a supply current of an adjustable frequency by a frequency converter. The frequency converter or at least one of the frequency converters is connectable to at least one alternating current motor of at least one of the auxiliary drive units in an intermediate time interval in which the receiving members of the apparatus for the fiber strands being produced are not loaded with the fiber strands.

Abstract: A microfiltration membrane is made up dissolving m-phenylenediamine-isophthalic acid polymer, a high temperature aromatic polyamide, in one or more solvents selected from the group which consists of N-methylpyrrolidone, dimethylformamide and dimethylacetamide, and the resulting solution in the presence of two or more of these solvents, a structure-loosening agent such as water or a polyhydric alcohol, is cast. After gel formation in the film the latter is washed free from solvents and dried. The microfiltration membrane has high bursting strength and a pore point of 0.05 to 10 microns and a high permeability.

Abstract: A process and apparatus for sterile docking of plastic tubes or the like is disclosed in which the tube ends to be joined are sealed by a transverse weld seam and aligned along a common axis. A heating unit is moved between the tube ends at a distance thereto to melt the latter. After retracting the heating unit, the tube ends are urged together. Prior to and during the heating, the tube ends are squeezed behind the weld seam. Immediately after contacting together the tube ends, the squeezing action is discontinued to provide a sterile docking and an opening of the sealed ends.

Abstract: A textile machine filter has its filter surface divided into zones which can be independently wiped by a stripper movable into juxtaposition with the zones or by respective strippers assigned to each one. A common collection space is provided beneath the filter surface to receive the contaminants from each zone.

Abstract: A sliding clasp fastener having woven supporting tapes and woven-in prefabricated rows of interlocking members each formed helically from a plastics monofilament, in which the interlocking members, seen in a projection on the plane of the sliding clasp fastener, have limbs superimposed on at least the interlock side, interlocking heads protruding beyond the edges of the supporting tapes, an inserted core and attachment sections. Each row of interlocking members is attached to the top face of its supporting tape by binding chain threads engaging the interlock side of each interlocking member and at least one wrapping thread engaging the attachment sections and the core and attaching them to the supporting tapes. The binding chain threads are crossed over between successive interlocking members. The wrapping threads pass around the binding chain threads in a loop between successive interlocking members.

Abstract: The invention is a further development of the gear-head unit for a manipulator described in German Open Patent Application No. 34 28 748. In order to increase the radius of action and range of applicability of the gear-head unit a structural arrangement with three concentric drive axes and four allowed rotational motions of front, intermediate and rear segments of the manipulator is set forth. These front, intermediate and rear segments are pivotally mounted together about first and second inclined pivot axes which are inclined to each other and to the main drive shaft axis. Along these inclined pivot axes two hollow drive shafts connected with each other extend which are supported by reduction gears in the front and/or intermediate segments. Because of that simultaneous opposing rotational motions of the intermediate and rear segments can be obtained from a single drive motor.

Abstract: Nickel- and vanadium-containing catalysts or combustion residues from petroleum treatment are combined with alkali metal carbonates and/or chlorides and the resulting mixture is melted in the presence of a sulfur carrier with or without carbon which serves to reduce the sulfur to a sulfidic form, a high vanadium, low nickel slag segregating from a high nickel, low vanadium matte. The matte and slag can be separately tapped and the matte is treated metallurgically to recover nickel while the slag is leached and is thus treated hydrochemically to recover valuable vanadium compounds.

Abstract: The rolls of a rolling mill, especially the working rolls, are horizontally shifted by a compact adjusting device, with use being made, as required, of guide pieces. The device is readily arranged in cylinder blocks, and the movements of the device can be easily monitored, transmitted, and set. The predetermined motions are carried out in rigidly controlled manner and no elastic yielding is allowed because of pressure plates extending in the windows of the base frame members. The pressure plates can be horizontally aligned and they cooperate with the holding elements which are to be shifted. The pressure plates are supported by wedges which can be shifted horizontally and transversely with respect to the plane of the frame, by way of pressure posts which operatively engage the pressure plates.

Abstract: A device for the generation of vortex rings which consists of a box supplied with orifices and electromechanic transformers. The electromechanic transformers are controlled by signalers and cause pressure waves within the box which form vortex rings at the orifices. As signalers low-frequency amplifiers can be used which send out music or speech signals or electronic circuits which form a kind of optimized signal.

Abstract: The process for positioning a series of suspended roving bobbin carriages equipped with a plurality of roving bobbins running on at least one rail opposite a plurality of working positions of a yarn manufacturing spinning machine comprises automatically guiding a positively actuated suspended roving bobbin carriage to a predetermined position opposite the working positions and stopping it in that predetermined position during delivery of the roving bobbins. The apparatus for performing this process includes a plurality of positioning elements working together pairwise of which a movable one is movable for positioning the suspended carriage, a carriage mounted one is positioned on one of the roving bobbin carriages and a fixed one is fixed on the stationary part of the spinning machine.

Abstract: A vehicle door latch for use in combination with a door bolt has an outer housing part formed with a recess in which the bolt is receivable and provided with a latch fork pivotal between a locked position securing the bolt in the recess and an unlocked position permitting the bolt to enter and exit the recess and with a latch pawl pivotal on the outer housing part into and out of a position retaining the fork in the locked position. A middle housing part lying on the outer housing part carries a releasing mechanism connected to the pawl for moving same into and out of its position retaining the fork in the locked position, a locking mechanism connected to the releasing mechanism for preventing same from operating the pawl to release the fork, and locking and opening levers respectively connected to the locking and releasing mechanisms and connectable respectively to the outside door lock and outside door handle for operating the respective mechanisms.

Abstract: The invention relates to new eburnane derivatives of the formula (I) ##STR1## wherein R.sup.1 is alkyl having from 1 to 6 carbon atoms, and acid addition salts thereof.The invention further relates to a process for the preparation of these compounds and pharmaceutical compositions containing them.Compounds of formula (I) show remarkable CNS-activity and are useful intermediates in the preparation of other, pharmaceutically active compounds.

Abstract: The invention relates to new 7-oxo-PGI.sub.2 -ephedrine salt analogues of the Formula I ##STR1## wherein A stands for --(CH.sub.2).sub.2 --, cis or trans --CH.dbd.CH-- or --C.tbd.C--;R.sup.1 is lower alkyl or hydrogen;B represents a chemical bond, --CH.sub.2 -- or --CR.sup.2 R.sup.3 ;R.sup.2 stands for lower alkyl or hydrogen;R.sup.3 represents lower alkyl or hydrogen;X is a chemical bond, --O-- or --CH.sub.2 --;R.sup.4 stands for C.sub.1-6 alkyl, C.sub.4-7 cycloalkyl, C.sub.1-6 fluoroalkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, phenyl, substituted phenyl or heteroaryl.The salts of the Formula I show the same pharmacological profile as the sodium salt of PGI.sub.2, they inhibit blood aggregation and the secretion of gastric acid, are useful in the prevention of anginal attacks.

Abstract: A station (24) is connected to the spinning units (4.sub.1 to 4.sub.n) along a spinning machine (2.sub.1 to 2.sub.3) via floor-conveyor installation (20). The floor-conveyor truck (22) has three arms (46, 48, 50) extendable transversally to the direction of movement, wherefrom the first is built to receive and set in place a full can (V), the second to receive and depose an empty can (L). The third arm (50) serves for the displacement of the cans(E) in use. The spinning units (4.sub.1 to 4.sub.8 to 4.sub.n) are equipped with transmitters (42.sub.1 to 42.sub.8 to 42.sub.n) through which the floor-conveyor truck (22) are set in motion starting from the station (24). The floor-conveyor truck (22) is provided with a first control unit (28) for an automatic running and with a second control unit (30) for the automatic receiving and placement of cans.

Abstract: A quenching element of the size and shape of a graphite nuclear fuel ball is introduced to the stacked balls of a stacked ball nuclear reactor core to release a neutron absorbing substance upon being heated to a predetermined temperature, thereby controlling the reactivity of the reactor by causing this substance, which may be a gadolinium compound, to deposit upon the graphite surfaces of the fuel element balls.

Abstract: The liquid-dispensing pistol-grip nozzle comprises a filling hose liquid-dispensing device equipped with a delivery pump which can be turned on and shut off, a valve housing with a spigot, a filling hose connector and a connected fuel duct, an operating mechanism with a pistol-grip handle and if necessary a flow rate setting mechanism for the pistol-grip handle, an automatic shut off device and a safety device. The automatic shut off device which operates a locking mechanism has a pressure equalizing chamber, a chamber-separating control membrane and a vacuum chamber with a filling state sensing duct with a vacuum duct opening near the delivery valve seat in the valve housing. The control membrane is connected with flexible free play to a hollow piston shaft of a safety piston guided in the valve housing which is movable between a locked in position and a locked out position. The safety piston is a differential piston with a small effective piston surface and a large effective piston surface.

Abstract: The method provides the use, for the determination of the estimation echo-channel pulse response, of digital filtering techniques of the transversal adaptive type, and the subdivision of the pulse-response of the equivalent echo channel into three intervals, the second of which consists of the significant portion of the pulse response and is determined by the iterative search for the value and the position of the coefficient of maximum absolute value; the first interval corresponds to a pure delay and the third corresponds to the contribution given by the lowest frequencies of the base band. To copy the echo-signal, there are only considered the pulse-response coefficients whose indexes are comprised in the second interval, and the samples of the signals to be copied belonging to preceding sampling instants, whose indexes are also comprised in the second interval.

Abstract: The method of surfacing the heater of a furnace for optical fiber drawing allows elimination of defects in the inner heater surface, which defects give rise to particle emission towards the preform. This is achieved by depositing a thin layer of a mixture of oxides compatible with the material composing the heater.

Abstract: A projecting nose from the grooved body is engaged in a stirrup to retain the boot on the ridge of a cross-country ski to which the stirrup is pivotally connected by an axis transverse to the ridge. An outer stirrup can be swung relative to the inner stirrup to cause a rod to rise in arcuate windows of the inner stirrup and thereby lift the nose of the boot and clamp it against the fixed crosspiece of the inner stirrup. A detent plate pivotal on an outer stirrup can releasably latch the outer stirrup relative to the inner stirrup.