Abstract: There is disclosed a mixing and kneading device for processing material such as synthetic plastics material. The device, which is designed primarily for use in a laboratory or for research and development work, consists of a power drive unit and a work unit. The work unit comprises a receptacle and is composed of a part adjacent to the drive unit and a part remote from the drive unit for placing thereinto a supply of material to be processed. Suitable mixing and kneading tools are journalled within the receptacle and releasably coupled to the power drive unit. The two receptacle parts are locked by an easily releasable clamping means to each other and to the power unit. Release of the clamping means selectively releases only the remote part of the receptacle or both parts from the drive unit, thereby permitting convenient and rapid emptying and cleaning of the receptacle, and also of the kneading and mixing tools after completion of a processing operation.

Abstract: The invention relates to a device for converting an incoming analog signal into an outgoing PCM signal, comprising a .DELTA. M-encoder in which a comparator circuit has a first and a second analog input of which the first analog input is arranged to be fed with the incoming signal and a digital output arranged to supply a delta signal with a clock frequency considerably higher than the upper limit frequency of the incoming signal and in which a feedback filter for the delta signal is connected between the digital output and the second analog input of the comparator circuit, and a digital .DELTA. M-PCM converter in which a digital filter is connected to the digital output of the comparator circuit in the .DELTA. M-encoder and is arranged to generate an average signal related to the delta signal and a PCM word generator is connected in cascade with the digital filter and is arranged to generate the outgoing PCM signal with a sampling frequency considerably lower than the clock frequency.

Abstract: In a magnetic clutch a rotatable axially transferrable input disc which is part of a magnetic flux path including a magnetic cup in the output structure, engages annular friction surfaces on the output structure when magnetic flux is generated in the flux path by a coil. The friction surfaces are part of a rotatable coil and a magnetic cup attached to the driven shaft about which the input disc rotates freely in the absence of flux. The frictional torque generated by the engagement of the disc and the friction surfaces is proportional to the voltage applied to the flux-producing coil. When the input disc is locked, application of flux results in a braking action on the driven shaft.

Abstract: Sludge containing metal hydroxide is first subject to a separation treatment where solid particles are removed, and then dewatered to obtain a greater concentration of the metal hydroxide. The dewatered sludge attains a thixotropic character whereupon it is applied to a carrier in a film-like manner. The film is heated and then sintered so as to achieve a metal oxide that is harmless and easily handable. The separation and dewatering steps of the process are carried out in a first apparatus having a suction drum surrounded by a filtering cloth that removes the water contained in the sludge and transfers it to a second apparatus having a rotating carrier for receiving on the circumference thereof the metal hydroxide in a film form, whereupon the film is heated during rotation of the carrier and sent to a sintering apparatus for conversion to a metal oxide in a granular or powder form.

Abstract: A watch display includes first and second concentric circular arrays of light emitting diodes which are sequentially energized to indicate the minutes and hours such that only one diode from each array is energized at any one time.

Abstract: The pressure exerted while writing a signature is transduced to an electrical analog signal which is periodically converted to a binary coded number representing the average amplitude of the pressure between periodic samplings.

Abstract: An improved centering assembly for a lathe in which a drill is axially housed in a rotatable centre for the lathe. The drill is movable from a retracted position within the centre to an extended position where it axially projects from the centre to drill a centre hole in a workpiece.

Abstract: There is disclosed a dispensing device composed of a can and a nozzle fixedly attachable thereto. The can of the device is generally a container made of sheet metal and having a top wall including an opening and a nozzle made of a synthetic plastics material having a limited inherent flexibility. The nozzle has a wide opening communicating with the equally wide can opening for rapid and convenient filling of the can with material such as a liquid or powder and for equally rapidly discharging the material in the can through the nozzle.

Abstract: A burner for burning crude or contaminated oil comprises a body defining a bore open at both ends, at one of which the oil is burnt, air being drawn into the flame through the bore, and an annular oil inlet in the bore wall such that air flowing through the bore to the flame will draw oil from the inlet in atomised form, will mix with it and will carry it into the flame. The burner is surrounded by an annular water ring provided with nozzles for spraying water into the flame.

Abstract: There is disclosed a walking toy figure such as a walking doll. The toy figure comprises a hollow trunk on which are suspended a pair of limbs such as legs which are freely pivotal between a standing position in which the legs occupy a substantially vertical position and a step position in which the legs are swung forwardly with reference to the standing position thereof. Drive means such as a miniature electric motor are coupled with the trunk so as to impart to the same lateral pendular movements. As a result of such movements, the weight of the figure is alternately shifted from one leg to the other, thereby causing the legs to swing alternately from the standing position to the step position and back again as the legs are lifted and put down again, thus causing the figure to walk forwardly in a wobbling manner similar to the walking of a toddler.

Abstract: An electret device has a dielectric layer containing electret charges and a radioactive layer on one of the surfaces of the dielectric layer.

Abstract: The present invention relates to an apparatus for carrying out frequency studies. A similar apparatus, which works satisfactorily, is disclosed in the Swedish Pat. No. 337,311. The operation of the apparatus in the patent relies on the punching of cards or tapes, which after perforation are collected for evaluation. This manual operation is, however, in certain cases timewasting and there is a present need for a superior method of indicating and storing information for subsequent evaluation.

Abstract: There is disclosed a free-burning equipment for gaseous fuel which comprises a burner member or filter into which fuel is fed under pressure by a feed pipe. The burner member is suitably shaped such as a flat plate which includes a multitude of narrow channels for the passage of fuel therethrough. The fuel is mixed as it turbulently emerges from the outside of the burner member, and is later ignited. A multitude of flames will thus, due to the gas pressure, burn well away from the burner head surface permitting said burner head surface to remain cold during so-called "free-burning.

Abstract: A video amplifier for driving an electron beam intensity controlling electrode of a cathode ray tube comprises at least one solid state high speed binary switch which is connected via a coupling capacitor to the controlling electrode while a D.C. restoration means eliminates the chance of any droop in D.C. level of the signal fed to the controlling electrode.

Abstract: There is disclosed a package or wrapping for powderized material such as ground coffee. The package consists of a substantially rigid outer casing and an inner container or liner made of plastic or other flexible material. The goods to be packaged are placed in the inner container, the shape of which is so that it substantially fits the casing when filled. The casing has on one side an opening which can be closed by a cover and the inner container when placed in the casing has on its side facing the casing opening a flat closure. The container is secured to the casing along its edges adjacent to the container opening. The fastening is of the type which can be ruptured, for instance, by means of a tear strip secured to the material of which the container closure is formed.

Abstract: A pulse code generator generates a number of different pulse sequences within a given frame by comparing the state of a clock driven counter having the same length as the frame and the contents of a fixed memory which contains in sequential locations numbers corresponding to the time position of the pulses within the frame. The memory is addressed by a second counter, which is presettable and is driven by the output pulses from a comparator. By presetting the second counter the position of the first pulse in any sequence is generated.

Abstract: During communication in a system for radio communication where stations are called with selective calls the participating stations watch for priority calls on a number of other radio channels. The watching is performed by listening in to the other channels at each switching from transmission to reception and vice versa and also at time intervals if the switching is overly late.

Abstract: There is disclosed a capping capsule for sealing attachment to the neck portion of a container such as a bottle. The capsule consists of a base wall portion in the form of a planar disc from which extends integral with the disc a heat shrinkable tubular side wall portion of substantially uniform thickness. The planar disc is thicker than the tubular side wall portion and the peripheral outline of the base wall is smaller than the inner peripheral outline of the side wall portion.

Abstract: A pulse pattern detector includes a local pulse pattern generator starting in response to an incoming signal impulse whether or not it is included in the pulse pattern to be detected. There is a number of timing circuits for measuring the time lapsed from each of the pulses in the locally generated pulse pattern and memory means for storing the measured value of all but the last timing circuit as soon as a signal impulse is received. Comparators are provided to compare the contents of the memory means to find if all the memory circuits have recordings equal to a state of the timing circuit in which case a signal is generated indicating that the desired pulse pattern is detected in the incoming pulse sequence.

Abstract: The present invention relates to a transit exchange for the transmission of asynchronous data signals having a given character structure and data rate, with the aid of a control equipment, including a computer and a sampling device, which is common to a number of sending terminal equipments and works on the time division multiplex principle. The instantaneous values of the data signals received over each of a number of incoming lines are sampled at a frequency so selected in relation to the asynchronous data rate that at least one sampling pulse falls within a distortionless region of the respective character element. The transit exchange includes a detector working synchronously with the sampling device to establish, by means of the successive processing of the sampling pulses, the binary value of each character element.