Abstract: Improved dry soft powdering vinylic filler products and processes for producing the same are disclosed. The vinylic filler material consists essentially of spheruloidal organic polymer material three dimensionally crosslinked to essential insolubility in any physical solvent and having primary particles in the colloidal size range of about 5 millimicrons to not more than 4.0 microns average diameter; said spheruloidal particles having on the surfaces thereof from 0 to an equal weight based on the spheruloids, of an insoluble coloring component, said coloring component, when present, comprising organic and/or inorganic material at least in part precipitated in insoluble form onto said surfaces from water soluble precursor material thereof in aqueous solution.

Abstract: Improvements in the dual temperature exchange system wherein the feed supply substance traverses selected portions of one of the two temperature zones, said selected portions being correlated with the availability and/or cost of a supply of the feed substance concerned; e.g.

Abstract: A liquid feed and effluent system to recover dissolved process gas (e.g. H.sub.2 S) from an effluent process liquid (e.g. water), which liquid may also contain dissolved solid components (e.g. soluble salts); the system heats the feed liquid with heat recovered from the effluent liquid, saturates the so heated feed liquid with process gas, which gas may also contain inert gas components, and separately discharges from the system such inert gas components and effluent liquid from which process gas and heat have been recovered. In the combination the dissolved process gas is preferably recovered from the effluent liquid by flashing at progressively reduced pressures and final vapor stripping thereof at the most reduced pressure.

Abstract: A pair of garden shears are provided with the shears having laterally disposed branch retaining means for retaining a branch after it has been cut to prevent a scattering of the cut branches.

Abstract: A rotary spinning ring construction is provided wherein the rotary ring body is provided with upper and lower outwardly tapered body portions, each of which has its surface provided with inclined grooves, a ring holder for receiving the rotary body therein, a sliding flange positioned between the holder and the body and having some play therein, and dust caps mounted on the upper and lower portions of the rotary body to seal the upper and lower areas of play between the holder and the rotary body. This arrangement results in a spinning ring construction that will dust automatically.

Abstract: A method is provided for fastening bolts and like threaded fasteners wherein the bolt is rotated initially at a high rate of speed until it comes to a point in relation to the bearing surface of the member to be clamped not past the snug point of the bolt head to the bearing surface of a member to be clamped, such as, for example, a plate, whereupon the bolt is thereafter rotated at a low rate of speed of rotation through a predetermined angle until it is stopped at a predetermined tightening completion position.

Abstract: A data communication system is described in which individual pulses or groups of pulses relating to specific items of information are multiplexed together to produce a pulse stream and this pulse stream is continually repeated so as to reduce the significance of errors in transmission which would be corrected automatically in the next transmission of the pulses relating to the incorrectly transmitted data. The system is described with reference to a data processing system for recording details and charges relating to manually connected telephone calls. Two-way communication between data entry and utilization means and a station control unit is provided in which the data rate for communication from the control unit to the data entry and utilization means is four times higher than that for communication from the data entry and utilization means to the control unit.

Abstract: A bracket tightening device for fixing a bracket or the like on a round rod or shaft. The device uses an intermediate body formed of a resilient material which is sufficiently strong within the restorable elastic limits, one end of the intermediate body being engaged at a fixed point on the bracket, the other end being engaged at a fixed point on the rod or shaft to which the bracket is to be secured. An adjusting screw is attached to the bracket and has its front end abutting against the intermediate portion of the intermediate body.

Abstract: A method of rendering a surface, especially a paper surface, phosphorescent, in which a composition comprising a phosphorescence activator and a soluble condensation product of formaldehyde and an amino compound is applied to the surface and is allowed to react in situ to form a phosphorescent insoluble condensation product. The composition may, for example, be in the form of a printing ink or a paper-coating mix.

Abstract: A mould for injection welding a junction between a thermoplastics sleeve and a cable having an outer sheath of thermoplastics material, which mould comprises three parts: one part is heat-conductive with a bore for receiving the end of the cable; one part is heat-insulating with a bore for receiving the sleeve, and the final part is heat-conductive with an enlarged bore for surrounding the actual joint. When the mould is assembled, this final part receives the ends, at least, of the other two parts and prevents relative axial and radial movement between the mould parts.

Abstract: An element for a terminating and testing unit for use in a telecommunications exchange is described. The element comprises a strip of insulating material having slots in opposite faces thereof in which conducting members are housed. The conducting members project from one edge of the strip to provide tag connection facilities for conductors and pairs of members interengage adjacent the other edge of the strip to provide socket connection facilities. A plug can be inserted between a pair of conducting members to break the contact of the members and establish contact between conducting surfaces of the plug and the members.The elements can be clamped together side-by-side to form a terminating and testing unit. Such a unit is very economical in its use of space.

Abstract: A switching circuit comprises an operational amplifier with two resistive negative feedback paths including respective unilaterally conducting devices (e.g. diodes) connected in opposite polarity to the output of the amplifier. A first terminal is connected to the electrode of the unilaterally conducting device in one path remote from the output of the amplifier, and a second terminal is connected to the electrode of the unilaterally conducting device in the other path remote from the output of the amplifier. Signals of one polarity only applied to the first terminal appear at the second terminal and signals of the opposite polarity only applied to the second terminal appear at the first terminal. The circuit may include three or more such feedback paths. The values of the resistors in the feedback paths may be adjusted to charge the transfer gain of the circuit.

Abstract: The heater has various provisions which severally and in combination improve its life, protect it from overheating and burnout under all operating conditions, and adapt it for shower use with maximum safety. These include a special arrangement with a water pressure responsive switch of a heating unit of the type having a rigid tubular housing so as to effect adequate heating with relatively low current density, provision for confining the heating of said unit to portions thereof which are fully submerged in water during operation, provisions affording air chamber means for accommodating exudations from the heating unit and facilitating operation of the pressure responsive switch, provisions for lockingly enclosing its insulating electrical housing and for encapsulating with the aid of potting compound all electrical elements of the device.

Abstract: A telephone conference amplifier consists of a plurality of identical channels connected to a common point. Each channel includes means for deriving an envelope signal from an incoming speech signal, and means for adding the envelope signal to the incoming signal to produce a unidirectional polarity signal which is applied through an ideal diode circuit to the common point. The signal at the common point is picked off by another ideal diode circuit in each channel and returned to the channel input. Each channel includes means for inhibiting the return of the signal when it is active. Each channel includes a level control circuit for controlling in dependence on the envelope signal the amplitude of the unidirectional polarity signal produced from an input signal so as to limit the range of variation.

Abstract: A threading device for threading a line through an upright hollow pole comprises a guiding and supporting means for the line and a substantially rigid shaft on an end of which the guiding and supporting means is mounted, the other end of the shaft being hinged to means capable of securing the shaft to a threading rod. The guiding and supporting means can comprise a block provided with passageways and having a body part and a bollard housed in a recess within the block and surrounded by passageways. When threading a pole the device is passed upwardly through the pole by means of threading rods with a weighted line held by the supporting and guiding means and, upon passing out of the pole, the shaft pivots relative to the threading rods so that the weighted end of the line hangs outside the pole. The rods can then be rotated to locate the end of the line in the desired orientation relative to the pole, and the weight then lowered.

Abstract: The invention provides a method of working steel machine parts, and it relates to a composite technique consisting of machining and heat-treatment, which makes use of the fact that at temperatures in the vicinity of or above the Ms point during quench cooling, the structure of steel assumes a state of supercooled austenite or a portion thereof assumes a state of martensite transformation or beinite transformation, suitable for machining, and in such state desired machining is applied to steel machine parts, which are then cooled to room temperature for hardening. Other merits and details will be made clear.

Abstract: An apparatus for automatically feeding and setting stud bolts. The apparatus comprises a parts feeder unit for axially arranging stud bolts having threaded portions of different lengths on the opposite ends thereof in a low, a bolt orienting unit for directing stud bolts in one direction, an escapement unit for correctly feeding stud bolts one by one, an impact wrench unit for screwing stud bolts into intended work to set them in position, a pneumatic pressure control unit for feeding compressed air produced by a compressor into the escapement unit and impact wrench unit, and an electric control unit for electrically controlling the units, the arrangement being such that all operations which end up with screwing stud bolts into intended work to set them in position are carried out mechanically.

Abstract: An unconditionally stable gyrator circuit includes two interconnected d.c. differential amplifiers. The terminals of an input port are respectively connected to the non-inverting inputs of the amplifiers, that to the second amplifier being connected through a resistor. The inverting input of the first amplifier is connected to the non-inverting input of the second, the output of the first amplifier is connected through a resistor to the inverting input of the second amplifier and the output of the second amplifier is connected through a resistor to the non-inverting input of the first amplifier. Two alternative output ports are provided between the output of the first amplifier and the non-inverting input of the second, and between the output of the second amplifier and its inverting input. The output port which is not used has a resistive impedance connected across it.

Abstract: Data bits are combined at a transmitter with parity check code bits and convolutional check code bits. On reception the parity check code bits are decoded to determine the error probability in the received signal. The convolutional check code bits are used to correct the received data according to a correction algorithm which is defined in dependence on the error probability revealed by the parity check code bits. The received data is divided into bytes and each byte is given a respective error probability rating. Circuitry including logic gates and shift registers are used to carry out the encoding, decoding and correction operations.

Abstract: A transfer apparatus designed so that workpiece transfer pins are fixed at predetermined intervals to a chain circulating along a frame. The pins horizontally project through a lateral surface of the frame and are also circulated in conjunction with the circulation of the chain so that apertured workpieces may be caught by the pins projecting through the frame and be conveyed along with the travel of the pins. Along the path of travel of the pins and at the necessary locations, there are disposed workpiece inlet, outlet, bypass and delivery devices. Other merits and details of the construction will be made clear.