Abstract: A flat, high frequency cable having a number of longitudinal conductors, is provided with a transverse conductance between said longitudinal conductors. The transverse conductance is substantially smaller than the conductivity of said longitudinal conductors to provide a defined attenuation along the cable. The transverse conductance is determined by a plurality of discrete components such as resistors and capacitors electrically connected to said longitudinal conductors at spaced intervals. The present cable may comprise two or three conductors.

Abstract: The rotor blades or wings of the present helicopter rotor structure are interconnected by tension or carrier bars so that diametrically opposite rotor blades or wings form a pair. The tension bars are substantially stiff against bending, but permit some bending. The blade angle bearings are movable in the blade flapping direction, as well as in the blade lead-lag direction. At least one blade angle bearing of a pair of such bearings permits an axial movement of the respective tension or carrier bar, whereby the latter is able to take up bending loads.

Abstract: The present canard type of aircraft comprises steering rudder elements which are tiltable substantially about the leading edge of each wing of the aircraft, whereby the respective edge of the rudder element extends alongside said leading edge of the respective wing. Another edge of the rudder element extends alongside a surface portion of the fuselage or body of the aircraft in close conformity with said surface portion, but movable relative thereto. A sealing may be inserted between the rudder element and the fuselage in such a manner that said movement is permitted.

Abstract: An apparatus for electrically testing a multi-core cable having first and second ends and including a plurality of insulated cores, comprising a rotary disc having a rotative peripheral surface formed of a plurality of notches each slightly larger than the core diameter for picking up a core and an elastic rotary disc having an engageable peripheral surface for transferring said picked up core along a predetermined path of travel, a lid like member provided along the peripheral surfaces of these discs, clamp means for clamping the cores at two positions at the said first end, an electrode vessel containing an electrically conductive fluid for immersing the cores at said first end for collectively rendering the cores conductive, an inlet adjacent these discs for receiving the cores between the clamp positions and urging the cores toward the peripheral surfaces of said rotary disc, a cutter provided adjacent the inlet and above the rotary disc for cutting the cores, whereby the cores are picked up by said notch

Abstract: A conical centrifugal basket suitable for continuously operating sugar centrifuges. The basket has at least two sections connected to each other by screws or the like extending through flanges which extend radially outwardly. The separation screen of the basket section having the larger diameter has a radial extension at the smaller diameter end. The radial screen extension is directed radially outwardly and is clamped between the flanges.

Abstract: An apparatus for electrically testing a multi-core cable terminated at both ends and including a plurality of insulated conductor cores, comprises a rotatably mounted disc having a peripheral surface formed of a plurality of notches each slightly larger than the core diameter for picking up a core and annular projections formed at both sides of the peripheral surface with annular grooves therebetween. The disc further includes an inlet for receiving and urging the cores adjacent to the disc toward the peripheral surface of the disc, whereby the cores are picked up by the notches one by one and transferred along the peripheral surface while each of the picked up cores is confined in the notches in a lid-like member. A counter counts the picked up cores. Fingers are coupled to the annular grooves for scooping the cores and removing the cores from the peripheral surface of the disc at an outlet.

Abstract: A long-sized wire collecting apparatus for use with an automatic insulated wire cutting and insulation stripping machine including cutter assemblies for cutting the insulated wires and for cutting the insulations, and a movable clamp device adapted to be reciprocable for effecting the withdrawal of the insulated wires by hauling operation. The apparatus comprises a first wire storing device whereby the wires withdrawn by the movable clamp device are connected into a linear form and two wire lengths cut by a single closing action of the cutter assemblies are temporarily stored and then allowed to drop, a second wire storing device whereby such wire lengths are temporarily stored for a predetermined plurality of times of dropping and then allowed to fall, and a plurality of wire length collecting trays for successively storing such dropped wire lengths intermittently transferring them.

Abstract: The present electrical melting fuse is current flow direction responsive. For this purpose the melting conductor is in heat exchange contact with a surface of a Peltier element which surface changes its temperature in response to a change in the flow direction of an electrical current through the Peltier element.

Abstract: Strip sections holding securing elements such as nails or screws are stacked, for example, in cartons so that the nail heads or screw heads come to rest in alternate opposite directions. For this purpose the strips slide down an inclined guide chute in a given direction until the heads are held by support elements which are movable alternately and laterally outwardly substantially at right angles to said given direction. Thus, one support element still supports the heads while the other support is withdrawn from the holding position whereby the strips, as they fall downwardly, rotate alternately, through an angle of 90.degree. whereupon the strips are intercepted, for example, by a tiltable chute.

Abstract: The top of a table such as a drafting table which may be adjustable in its elevation, is counterbalanced by counterbalancing elements exerting an approximately constant balancing force. The counterbalancing elements comprise at least one leaf spring forming a bow inserted between the table top and a counter abutment below the table top so that the leaf spring or springs is biassed to form said bow, whereby the load on the bow has a tendency to cause a lateral flexure of the bow. The arrangement is such, that the downwardly directed force component caused by the weight of the table top and the pressure exerted by the bent leaf spring or springs, are directed opposite to each other.

Abstract: The blades or wings of a rotary wing aircraft are secured to the rotor head n a non-rigid manner by means of a carrier bar, however, without any flapping hinges and without any lagging hinges. The carrier bar is supported on the rotor head. The connection of each wing to the respective end of the carrier bar is such, that the longitudinal wing axis is excentrically displaced relative to the central longitudinal axis of the carrier bar in the direction in which the forces of the air are effective. The displacement or spacing between the two axes is such that at least a partial compensation of the occurring bending moments is achieved.

Abstract: A method and an apparatus useful for a group of wires, such as a telecommunication cable including a multiplicity of cores, as when the wires are individually tested for continuity or defective contact. The group of wires are pressed against the outer periphery of a rotating disc formed with a suitable number of notches each dimensioned to accommodate one wire and are forced into the notches one by one while the disc or the wires are being rocked longitudinally of the wires. The wires individually received in the notches are transferred by the rotation of the disc while being confined in the notches by a confining member provided around the disc and facing the outer periphery as slightly spaced apart therefrom. Thus the group of wires can be separated and transferred one after another reliably, efficiently and automatically.

Abstract: The present rotor structure for rotary wing aircraft, such as helicopters, s constructed to minimize the mass unbalance which normally occurs due to the lead-lag of the rotor blades or wings. For this purpose all the bearings supporting the rotors on the rotor heads are constructed as bearings permitting an axial movement of the tension bars which interconnect the wings of a pair of wings. In addition, the wing interconnecting bars are bending-resistant and connected with each other at their crossing point by a centering device which is freely movable in the rotor plane and relative to the rotor head. The connection of the bars by the centering device is rigid in the longitudinal, axial direction of the tension bars.

Abstract: The present method and apparatus for die casting of metals such as aluminum, is especially suitable for casting under vacuum. The casting is performed under such operating conditions that a contact between the molten metal being cast and the free atmosphere is avoided all the way from the melt to the casting proper. For this purpose, the present casting apparatus includes a closeable and evacuable transport container connected to the casting apparatus proper by a coupling which is also evacuable. The transport container is placed on a filling chamber and the evacuating apparatus is arranged to simultaneously evacuate the filling chamber, the transport container and the coupling between the transport container and the filling chamber proper. The evacuation takes place in a direction opposite to the flow direction of the metal being cast. If desired, further evacuating means may be provided for evacuation of the filling chamber and the die in the direction of the metal flow.

Abstract: The present power driver handles fasteners of varying length mounted on a strip or belt, through a touch-down foot which accommodates fasteners of different length to eliminate wasted motion of the driver. The fasteners are also prevented by said touch-down foot from tipping or going into a workpiece at an angle. The depth to which the fasteners are driven into the workpiece is controllable and any irregularities in the mounting of the fasteners on the strip or belt are compensated.

Abstract: The present discharge lamp system comprises two or more serially connected discharge lamps connected across a pair of power input supply terminals through a ballast circuit and two or more serially connected semiconductor starter circuits. The starters are connected in parallel with their respective discharge lamps and have inherent breakdown voltages, whereby the total value of the breakdown voltages for each starter is higher than the source voltage at the power supply terminals. The system further comprises voltage dividing circuit elements enabling the conduction of one of the starters before the conduction of the other starter or starters in response to the source voltage, whereby the starters operate sequentially. At least one of the starters employs a backswing booster including a series circuit of a nonlinear inductor and a switching semiconductor and a capacitor connected in parallel with the series circuit to provide a sufficient starting voltage for the associated discharge lamp.

Abstract: A saw, especially a circular metal saw, is equipped with a device for keeping open the gap cut by the saw blade. For this purpose two chucking members are arranged symmetrically to the right and left of the saw blade on one side of the workpiece and an abutment member is arranged on the opposite side of the workpiece and opposite the saw blade. Power drive means press the chucking members against the workpiece. The workpiece engaging elements of the chucking members may be pointed ridges or conical tips.

Abstract: The present mass transfer apparatus between two media is especially adapted to blood dialysis. To assure an undisturbed flow of the blood through the dialyser and to avoid coagulation all flow channels are shaped to avoid dead corners and choking zones so that the blood is prevented from forming wakes or so-called "dead waters" in its flow path. For this purpose a hollow space is formed adjacent to the open ends of the hollow fibers. The inlet and/or outlet to this hollow space may extend radially axially or tangentially.

Abstract: The present distance measuring laser apparatus measures the delayed time occurring between two signals derived from a laser beam and a reflected light beam and received in two separate channels. One channel is the reference channel and provides a starting signal when a light signal is emitted by the laser. The other channel is the measuring channel and provides a stop signal at the time of the return of a reflected light beam. An identical input circuit is provided in each signal channel. The receiver input rectifier or diode of each input circuit has a working impedance including a parallel resonance circuit made up of the barrier layer capacity of the diode, of an inductance coil and a further, external capacity.

Abstract: A transducer bridge circuit arrangement includes at least two bridge circuits connected in parallel to each other. Any interaction affecting the sensitivity of the bridge circuits relative to each other is eliminated. For this purpose the circuit arrangement includes two power input terminals and two measured signal output terminals. In order to avoid a signal component, which represents force couple related load components between the two measured signal output terminals, these terminals are arranged on the one hand between the two strain gauges which measure tension or compression only and, on the other hand, between the two strain gauges which measure tension as well as compression. In such an arrangement the power input terminals and the measured signal output terminals are effectively rotated by 90.degree. relative to prior art transducer circuit arrangements, whereby interaction between the individual bridge circuits in a multiple transducer system is eliminated.