Abstract: A joint in a high-voltage cable with electrical conductors surrounded by solid insulation, the conductor insulation at the joint having a coating the resistivity of which is lower than that of the conductor insulation. The space around the jointing sleeve of each joint and between the cut insulation of the conductors is filled with a weakly conducting material to a diameter which is approximately equal to the diameter of the conductor insulation, the coating being in electrical connection with the conducting material surrounding the jointing sleeve.

Abstract: An antenna for transmission of microwave energy, has a plate with openings for receiving energy from a feeding or input waveguide connected to an energy source and for feeding the received energy to a number of antenna or output waveguides provided with one or several openings through which energy from the feeding waveguide is to be emitted. The plate on the input side is provided with tracks in which a part of the feeding waveguide, which part together with the plate forms the feeding waveguide, is fixed, and the plate on the output side is provided with a number of tracks, in each of which a part of an antenna waveguide, which part together with the plate forms the antenna waveguide. In addition both the feeding waveguide part and each antenna waveguide part have the form of an open rectangular container, the edges of which together have the same form as the corresponding tracks of the plate, and the bottom of which is provided with one or several openings.

Abstract: There is disclosed a method of and a device for strengthening a sheet piling by means of one or more beams, particularly double T- or I-beams. Such strengthening is effected by driving a beam adjacent to one side of the sheet piling into the ground. The beam is secured to the sheet piling by an elongate strap. This strap has at one end an elongate slot and rigid bars are welded to the strap along the slotted end thereof either on one side or on both sides of the strap, depending upon whether the beam is a T-beam or a double T-beam. The strap so prepared is then slid at its slotted end into the web of the beam after it is driven into the ground and the bars are then welded to the cross bar or bars of the beam. The other end of the strap is suitably fastened to the sheet piling.

Abstract: A radar function testing apparatus for simulating a real radar target includes a transmission path between the movable and the fixed portion of the radar antenna in a radar equipment. A radiation energy source in the form of a light emitting element is mounted on, for example, the movable part and a radiation receiver in the form of a light sensitive element is mounted, for example on the stationary part. The light sensitive element consists of a photo detector which in dependence on the direction of the impinging radiation beam emits a number of signals which in known manner are treated so as to create signals which imitate the signals which would be obtained from a real target.

Abstract: A SPC-telecommunication system comprises test points, operating points, data-bus interconnected data storage registers, a phase generator and an access signal generator. The registers include instruction registers for storage of instructions, and an unit-incrementing address register for storage of addresses identifying the instructions. The phase generator produces phase signals by which the processing cycles of the instructions are divided in phases. The access signal generator is controlled by the phase signals, the addresses and the instructions. For producing access signals in order to control the test points, operating points and registers, the access signal generator includes logic arrangements or units. A first logic unit decodes the contents of the address register during the beginning phase of the respective cycle and accesses the instruction register associated with the respective address during the other phases of the cycle.

Abstract: A device for measuring small frequency differencies includes a phase detector followed by a differentiating circuit. In order to linearize the output from the differentiating circuit the time constant thereof is decreased during the fly back time of the saw-tooth wave delivered by the phase detector and the phase of one of the frequencies is shifted 180.degree. as soon as the saw-tooth approaches the generally non-linear end portion.

Abstract: In a system for recording bits in elements along a moving magnetic medium wherein a first valued bit is represented by a pulse of a first width, length or duration, and a second valued bit is represented by a pulse of a second width, length or duration, there is included the improvement of changing either the first width or said second width when the bit to be recorded and the bit previously recorded have the same value.

Abstract: A rotatable assembly is rotatably mounted on a stationary assembly. The stationary assembly guides a conductor wire, or the like, to a wrapping station, the rotatable assembly applying glue or other adhesive to a portion of a wrapping tape which is wrapped around the conductor wire at the wrapping station. The glue is applied to the wrapping tape by supplying it to a receptacle in the rotatable assembly, from which it is forced out through a hole by centrifugal force. The receptacle is of conical shape so that the centrifugal force acting on the glue will have a component thereof forcing the glue up toward the hole, and out therefrom.

Abstract: There is disclosed a device for cutting a fishing line by pulling the same sharply against cutting edges on the device. The device also provides a flap including an opening for hooking a fish hook tied to the line thereby preventing flapping of the line when the rod is not in use.

Abstract: A printer has a horizontal platen for supporting paper and a print head which moves horizontally opposite thereto during indexing operations and is driven toward the platen for character printing. The print head is mounted on a carriage bearing block acting as a linear bearing and having a passageway of complex cross-section resulting from the superimposition of a square and a circle. A controllably rotatable carriage shaft passes through the passageway of the block.

Abstract: There is disclosed a typewriter using a single element print head wherein the tilt and rotate positions for character selection are obtained by servo systems driving tilt and rotate shafts. The system utilizes a digital multiplexing system whereby common elements in the servo channels are time shared. One common element is a binary arithmetic unit which compares binarily represented actual and desired position values of the shafts to fetch from a memory desired velocity information. The fetched velocity information in binary form is compared with the binarily represented actual velocity of the shafts to generate signals for energizing the servo motors which drive the shafts.

Abstract: There is disclosed a device for lapping an unlimited number of balls in continuous operation. The device has a stationary working disc and two rotary working discs which are driven in opposite direction and at differential speeds. The rotary discs and the stationary disc define therebetween a working gap into which balls to be lapped are continuously fed and from which they are discharged after having passed through all or part of the gap. Driving of the rotary discs in opposite direction and at differential speeds causes the balls to move along the gap and to be simultaneously lapped. The rotational speeds of the rotary discs can be independently adjusted, thereby controlling the dwell time of balls in the gap.

Abstract: The present invention relates to a frequency modulated oscillator, preferably operating within the microwave range, comprising a resonator having a reversed biased semi-conductor element, for example, a Gunn diode and voltage dependent capacitor, for example a varactor diode acting as a frequency modulator and being connected to a modulating signal source. In order to linearize the modulation characteristic, there is a resonant circuit in the resonator which circuit is tuned to the first harmonic 2fo of the unmodulated fundamental frequency fo of the oscillator. When modulating the varactor diode the resonant circuit becomes detuned and the voltage across the Gunn diode is changed so that its capacitance is also changed to change the fundamental frequency fo which compensates the non-linear change in the modulation characteristic of the varactor diode.

Abstract: There is disclosed a safety closure cap for use with a bottle or other container having a neck portion. The closure cap is made of an elastically deformable or expandable synthetic plastic material. The neck portion of the bottle has on its outside a ring-shaped rib flattened at a portion of its circumference. The inside of the skirt of the cap has thereon several radially inwardly protruding lugs. These lugs can be forced to pass the rib on the neck portion in any angular position of the cap relative to the bottle neck by applying axially directed pressure to the closure cap thereby effectively locking the cap to the bottle. There is further provided on the inside of the cap a liner of moisture-absorbing material which is held in position by circumferentially spaced further lugs.

Abstract: An information retrieval system in which each record in a file is scanned and a hit signal is produced if it matches a search criterion. The hits are stored in a plurality of bit maps. Each record has an identifying index, which is transformed in a number of different ways to produce addresses for the bit maps. The outputs of the bit maps are combined to produce a stored hit signal. The number of hits is compared with the number of stored hits to determine whether any spurious stored hits have been recorded and, if so, the transformations are modified.

Abstract: Serially received data bits represented by the positions of signal-amplitude transitions within bit cells are interpreted by measuring the entire duration of a preceding bit cell and utilizing a fraction of such entire duration to sample for the time of occurrence of the signal-amplitude transition in a succeeding bit cell.