Abstract: A control arrangement, especially for use with a track supported implement, having an elongated beam with carriages at the opposite ends supported on respective tracks in which pick-up elements on at least one of the carriages are sensitive to movement of the respective carriage in a horizontal plane and about a vertical axis on the respective track. The pick-up elements are longitudinally spaced on the curve and supply respective signals to a comparator which emits a control signal which varies as the difference between the pick-up signals varies. The control signal is employed for developing an influence on the beam tending to restore it to the condition of parallelism with itself.

Abstract: An acoustic system for measuring the speed of flow or current speed of a body of water employing a measuring path through the water which extends from one shore to the other in a direction oblique to the direction of flow of the water. A triggerably measuring sound generator positioned on one shore transmits a pulse over the measuring path to a receiver on the other shore. The receiver produces an output which triggers the measuring sound generator to emit a subsequent pulse. A measuring circuit evaluates the resulting pulse repetition frequency of pulses emitted by the sound generator and produces an output proportional to the flow speed of the water.

Abstract: In a method and apparatus for winding yarn onto a bobbin in a textile machine in a manner to form a reserve winding at one end of the bobbin, the yarn forming the reserve winding is given an accurately determined length by drawing a length of yarn greater than the predetermined length into a suction device before commencing winding of a bobbin and then cutting the yarn at a predetermined point beyond the inlet end of the suction device at a time bearing a fixed relation to the catching of the yarn by a catch element associated with the bobbin. The timing of the cutting operation is controlled by monitoring the instant at which the inlet end of the suction device is moved to a position at which the yarn can be caught by the catch element.

Abstract: An injection die casting apparatus, especially for making molded articles especially of thermoplast-structural foam, with at least two closing units arranged adjacent to each other and provided with molds and mold chucking plates, and also equipped with an injection unit comprising an extruder, a pertaining charging hopper, a deflecting head and a hydraulic accumulator. The upper surfaces of the closing units have centrally arranged therein injection openings, and the injection unit is pivotable about a vertical axis and tiltable about a horizontal axis.

Abstract: In a spinning rotor for an open-end spinning unit, the rotor being provided with a bore extending along its axis of rotation to accommodate a yarn extraction tube and being formed to define a fiber collection trough and an intake portion whose cross section widens in the direction toward the trough, the intake portion presenting a radially outwardly extending projecting portion which merges into and defines one boundary of the fiber collecting trough, the region where the projecting portion merges with the trough constituting the region of maximum diameter of the trough and the side of the trough opposite the projecting portion being defined by the spinning rotor bottom surface, the fiber collection trough is kept clean by forming the collection trough so that the radially outermost end of the surface of the projecting portion defines the maximum diameter of the trough, imparting to the portion of the trough adjacent the rotor bottom surface a configuration such that the diameter of the trough in this region

Abstract: In the processing of a band of fiber material at a plurality of processing locations in a textile machine which operates while periodically being unattended and receives the fiber material band to be processed from supply containers, a sufficient supply of fiber material to the machine is assured by automatically monitoring the quantity of fiber material in each container, and producing an output signal when the monitoring indicates that the quantity of fiber material in a container has reached a lower limit value.

Abstract: A frame structure, especially for a portable bridge, which comprises at least one pair of struts to be interconnected and equipped with coupling members having such a profile that the coupling members when positively engaging each other permit a pivoting in which the coupling members are able to convey forces in all directions between the two struts. A pivoting back of one strut relative to the other strut from the coupling position is prevented by additional coupling elements.

Abstract: In a web layering device composed of a series of conveyors disposed in sequence for conveying a web of textile fibers from a card and depositing the web in layered form on a transporting unit, at least some of the conveyors being mounted on carriages to undergo back and forth movement, the attainable web conveying speed is increased by disposing an air guidance member in the form of a plate at at least one region of transfer between two conveyors to create an air stream which travels substantially tangentially to the web travel path.

Abstract: An off-shore drilling platform structure and method of mounting in which the structure comprises a base with spaced upstanding legs thereon and a floatable platform slidable along the legs. Laminated tension elements have the opposite ends connected to the base and the upper ends of the legs and the platform has clamp devices for clampingly engaging the laminated tension elements. One clamp device pertaining to each element is nonmovable in the direction of the legs on the platform while the other is movable on the platform in the direction of the length of the legs by power operated devices. The clamp devices pertaining to each tension element are selectively operable so the platform can be moved along the legs.

Abstract: A diaphragm filtration system includes a pipe and a filtering diaphragm supported substantially coaxially within the pipe and lying, at least indirectly, tightly against the inner pipe wall as filtration proceeds in a radially outward direction. The diaphragm is a sheet member bent cylindrically and having overlapping surfaces; the cross section of the diaphragm is an annulus having a non-continuous area and overlapping ends.

Abstract: In a staple fiber card unit composed of a main cylinder and at least one work roller and clearing roller, the output of the unit is maximized by driving the work and clearing rollers at a rate which causes the sum of their peripheral speeds to exceed 250 meters per minute.

Abstract: An arrangement for improving transloading pourable materials by means of a grab bucket, according to which a hood is carried by a crane member on which a grab bucket is suspended by hoisting means. The arrangement is such that the grab bucket can be pulled selectively from below into the hood which is so dimensioned as to allow the grab bucket substantially fully to open within the hood. The lower rim of the hood which surrounds the inlet opening for the grab bucket and the upper rim of a chute-like member through which the goods to be transloaded are from the grab bucket passed into a receiver, are flange-shaped and of at least nearly equal circumferential dimensions. If desired, an elastic member, e.g. a sealing ring or an inflatable hose may rest on and be connected to the flange-shaped rim of the chute-like member.

Abstract: A charging device, especially for supplying aluminum in the form of wire to a steel melt for quieting the melt, in which a frame positioned adjacent the melt vessel has an inclined wall on the side facing the melt and a boom slidable along the inclined wall contains feed rollers for feeding a wire through a feed tube toward the melt. The wire is derived from a reel supported in the frame with the reel being driven in payout direction. The wire is cut off at the lower end of the feed tube and is dropped into the melt together with a combustible guide sleeve which is releasably clamped to the feed tube.

Abstract: A control arrangement for a converter of the type including a direct current motor driving a three-phase generator with at least one exciter coil of the generator and/or of the motor being fed from the three-phase mains of the generator via a series connected transformer and a rectifier. At least one secondary winding of the transformer is connected in a closed series circuit which further includes a controlled thyristor, and two other secondary windings of the transformer which other windings are connected in parallel. In dependence on the parameter of the converter to be regulated, the control current of the thyristor is varied to provide a two-point regulation of the saturation current for the transformer flowing through the closed series circuit.

Abstract: Apparatus for locating sources of sound in water, including a hydrophone system which is suspended from a buoy after being dropped into the water and whose one given reference axis is automatically aligned with the magnetic field of the earth by mechanically coupling the hydrophone system with a compass magnet (north reference). The hydrophones of the hydrophone system are electrically connected with a switching or control box by means of transmission wires which are insulated with an elastic plastic and pass freely through the water and the hydrophone system is mechanically fastened to the switching box to be rotatable in a recoilless manner about an axis which is perpendicular to the surface of the earth. The control box is in turn connected to the buoy by means of an elastic suspending cable and an electrical connecting cable.

Abstract: An improved apparatus for the formation of directional characteristics at the receiving end of a ranging system operating according to the reflected-beam ranging technique with acoustical or electromagnetic waves and for correlating the received signals, which apparatus is of the type employing a number of transducers arranged in rotational symmetry in a transmitting-receiving plane, with the transducers emitting pulse-shaped wave energy as their transmitted signals and being connected for reception via a transmitting-receiving switch, and if required via amplifiers, with a scanner which repeatedly interrogates the received signals in succession during one reflected-beam ranging period so that each switch position of the scanner is associated with one directional angle and each interrogation cycle covering all transducers is associated with one directional angle revolution.

Abstract: In order to melt iron-containing material, particularly sponge iron, in an electric furnace containing a molten metal mass underlying a molten slag mass, electrodes are immersed in the molten slag mass, a current is caused to flow between the electrodes and is converted into melting heat by the electrical resistance of the slag, and the number of charge carriers in the slag is adjusted to control the conductivity of the slag and thus the ratio of the current flowing through the slag to the current flowing through the molten metal.

Abstract: A milling cutter has a cutter body, a plurality of stops received in the cutter body, an adjusting device for separately axially displacing each stop, a cutter blade received in each stop and a wedge member associated with each stop for tightening each cutter blade to the respective stop. The adjusting device comprises a projection which is attached to and extends from each stop and which is received in a recess provided in the cutter body, at least two axially oriented clamping faces which form part of each projection and which are inclined with respect to one another and set screws cooperating with each clamping face. Each set screw is supported in the cutter body in a substantially radial orientation with respect to the axis of the cutter body. Each clamping face is obliquely disposed with respect to the orientation of the associated set screw for effecting an axial shift of the stop upon tightening the respective set screw.

Abstract: In a spinning rotor for an open end spinning unit, the rotor being provided with a bore extending along its axis of rotation to accommodate a yarn extraction tube and being formed to define a fiber collection trough and an intake portion whose cross section widens in the direction toward the trough, the intake portion presenting a radially outwardly extending projecting portion which merges into and defines one boundary of the fiber collecting trough, the region where the projecting portion merges with the trough constituting the region of maximum diameter of the trough and the side of the trough opposite the projecting portion being defined by the spinning rotor bottom surface, the accumulation of dirt in the fiber collection trough is prevented by forming the collection trough so that the radially outermost end of the surface of the projecting portion defines the maximum diameter of the trough, imparting to the portion of the trough adjacent the rotor bottom surface a configuration such that the diameter of

Abstract: A drilling tool, particularly for working metals, in which a tool holder is provided at its frontal or end surface with a receiving slot which is open on three sides and in which an interchangeable blade type drill bit is fastened. A bar-shaped adapter is symmetrically inserted into the receiving slot between the drill bit and the bottom surface of the slot. The adapter extends laterally beyond the periphery of the tool holder with one end surface abutting the bottom surface of the slot and the opposite end surface contacting and providing an abutment for at least the portions of the blade shaped drill bit which extend laterally beyond the periphery of the tool holder.