baber/WOPTO huggingface dataset:
Patent GB-2033256-A (GB)
Title: Centrifugal Separation
IPC: B03C3/15
Filed: 1978-11-14
Abstract: In a process for the centrifugally separating impurities from a liquid or gaseous fluid, the fluid is injected tangentially at 5 in a first end of an apparatus 1 of circular transverse section in which the fluid forms a first, cylindrical rotating layer A, whilst at the other end, and starting from the periphery, there are discharged a fraction containing heavy impurities at 11, then cleared fluid at 12, and then possibly a fraction containing impurities lighter than the fluid at 13. At least one fraction of the fluid leaving the apparatus, e.g. at 12, is recycled, via line 17 and venturi 18, by tangential injection at 6 into the first end thereof, the fraction to be recycled, independently of the initial fluid to be treated, being injected at a point located at a radial distance different from that of the point of injection of the initial fluid, so as to create in the apparatus at least one second, cylindrical layer B concentric to the first, in contact therewith and rotating in the same direction. Agglomeration of impurities is promoted by the polarising action of an electrode 9. <IMAGE>
Patent GB-2010826-A (GB)
Title: Improvements in and relating to sweeteners
IPC: A23L27/30
Filed: 1978-12-08
Abstract: Dihydrochalcones of the formula   <IMAGE> are disclosed wherein M<+> is a cation, X is H or OH, and R is a lower alkyl. These materials are useful as sweeteners for edibles. They may be prepared by electrophilic addition of the 3-sulfo-5,6- dihydroxyhexyl group to the corresponding flavanones, using epoxysultone, and thereafter converting to the dihydrochalcone.
Patent GB-2010603-A (GB)
Title: Brushless excitation system for dynamoelectric machines
IPC: H02M7/162
Filed: 1978-12-19
Abstract: A thyristor firing circuit for a brushless excitation system for an electrical machine includes: a transistor Q4 for providing an effective short circuit across the thyristor gate and cathode terminals (G' and K) during the periods when the firing circuit is not providing triggering pulses, the transistor Q4 being saturated during such periods and then constituting a short circuit across a winding L4, and hence effectively short circuiting a winding L3, of a transformer T1 which feeds the triggering pulses to the thyristor gate and cathode terminals; and means for providing a fast rising square wave pulse train high mark-space ratio to the thyristor gate for the greater part of the thyristor conducting period by successively saturating the core of the transformer TI in opposite directions. <IMAGE>
Patent GB-2015769-A (GB)
Title: A synoptophor
IPC: A61B3/08
Filed: 1979-02-16
Abstract: The invention provides a synoptophor or synoptometer device having two test markers which are pivotable with the aid of two scales each about two axes which are perpendicular to one another, wherein means (13, 14, 23, 24), such as angle coders, are coupled with each scale (11, 12, 20, 21) which allow digital reading of the measured values. The means (13, 14, 23, 24) may be connected to a data processing device (17) which converts the digitally read measured values into vectors of a specific angular position and length, and there may be connected to the device a store device in which the converted values may be removed in stored form, e.g. in the form of a magnetic card. The device facilitates the preparation of a diagram showing eye deviations or anomalies in patients having squints. <IMAGE>
Patent GB-2016074-A (GB)
Title: Door locking system
IPC: E05B65/36
Filed: 1979-02-26
Abstract: A door locking system for a motor vehicle includes double-acting solenoids (1,2,3,4,5) which are connected to locking levers of the door latches and are energised under the control of a signal generator which includes a motor-driven cam (C) controlling operation of a number of switches (ZS, US, LS). The motor control circuit includes a switch (PS) which is closed upon closure of the driver's door and a contact (SLC) which is closed when the key is withdrawn from the steering lock, thus enabling locking of the doors by closure of the driver's door when the key is not in the steering lock. <IMAGE>
Patent GB-2042664-A (GB)
Title: Finishing Tubes
IPC: B29C35/02
Filed: 1979-02-28
Abstract: Smoothing cut ends of thermoplastic tubing by pressing the end of the tubing into a heated rotating die, at a temperature at or above the softening temperature of the thermoplastic and subsequently cooling the tubing.
Patent GB-2045331-A (GB)
Title: Bar Locking Mechanism
IPC: E05C19/00
Filed: 1979-03-24
Abstract: A bar locking mechanism is designed to be attached in such a manner to a door or window or other such closure that the said mechanism encompasses the full width of the closure. It comprises a housing 5 attachable to the back surface of the closure, or inside the closure if it is hollow, supporting a rod 15 which connects a receiver bolt 14 to a transmitter bolt 17. A lock or other fastening 23 is located on door post 2 so that, when its bolt projects, it forces the receiver bolt 14 and rod 15 leftwards against spring 20, thus pushing transmitter bolt 17 into a taper 24 on the other door post 1. <IMAGE>
Patent GB-2020531-A (GB)
Title: A broadcaster for granular or particulate material
IPC: A01C17/00
Filed: 1979-04-25
Abstract: A broadcaster for granular material comprising a frame (1) on which is mounted at least two belt- like conveyors (6-11). Material is fed at a controlled rate for a hopper (4) to the conveyors. The conveyors diverge from a position adjacent the hopper and broadcast the material over the ground. The broadcaster will normally be carried by a tractor and the conveyors driven through a suitable transmission from the power take-off shaft of the tractor. <IMAGE>
Patent GB-2021180-A (GB)
Title: Packing Railway Sleepers
IPC: E01B27/18
Filed: 1979-05-22
Abstract: The method comprises lifting the sleepers off the ballast bed and pneumatically placing ballast stones by an air stream in the gap formed between the underside of a lifted sleeper and the underlying ballast bed using a tool which is driven into the ballast bed adjacent a side face of the sleeper to a depth such that an outlet for the ballast stones propelled by the air stream is provided at the level of said gap. The tool used comprises a spade-like member having a channel 3 along which the air stream 15 and the ballast stones 14 are fed into said gap, said member being disposed so that said channel extends generally downwardly with its mouth facing said sleeper side face and the length of the channel being greater than the depth of the channel. Preferably the length of the channel is such that with the lower end thereof aligned with said gap said channel extends upwardly to a position above the top side of the sleeper. <IMAGE>
Patent GB-2029378-A (GB)
Title: Transferring Material Between Hoppers or Containers
IPC: B65G69/18
Filed: 1979-07-04
Abstract: A connector for transferring particulate material by gravity from a storage tank (2) or hopper with a diaphragm or iris valve (4) to a transportable container (3). The connector includes a tubular guide (21, 22, 23) which is manually movable relative to the remainder of the guide (8, 15) by means of an external handle (27), a tubular portion (11) arranged between bellows (12, 16) and webs (19) connecting the guide to the portion (11), whereby the bottom of the tubular guide is moved away from the level of material in the container 3, thereby opening a new flow path. In this way material in the tubular guide which may have been blocking the valve (4) is cleared so that the valve can be shut. <IMAGE>
Patent GB-2027627-A (GB)
Title: Drawn pipes of austenitic chromium-nickel steels
IPC: C21D6/00
Filed: 1979-07-24
Abstract: A method for improving the structure of such pipes made in a procedure which includes subjecting an unfinished pipe of such steel to an alternating succession of intermediate heat treatments and cold working, and then subjecting the pipe to a solution heat treatment, comprises carrying out the solution heat treatment at a temperature of between 1353 and 1424 DEG K and the final intermediate heat treatment at a temperature which is between 50 and 150 DEG K lower than the temperature of the solution heat treatment and performing the final cold working after the final intermediate heat treatment, to produce a deformation having a maximum value of 15%, and as the last process step before the solution heat treatment.
Patent GB-2055968-A (GB)
Title: Power-driven centrifugal air blower
IPC: F04D29/28
Filed: 1979-08-03
Abstract: A power-driven centrifugal air blower whose rotary impeller (15) takes the form of a generally cylindrical brush. The brush is comprised of a relatively dense mass of bristles each of which extends substantially radially from a central hub. The bristles thus replace the multiple individual blades of the impeller used in a conventional power driven centrifugal air blower. Preferably they are sufficiently relatively spaced apart from one another, and made of suitably non-electro-static material, that essentially no filtration of the indrawn air takes place as the air passes through the impeller.
Patent GB-2028645-A (GB)
Title: Spring networks
IPC: A47C27/06
Filed: 1979-08-15
Abstract: A spring network comprises rows of springs (1, 2) extending parallel to one another, each row being made from a single spring wire. Each spring consists of two opposed generally spring portions of opposite hand interlinked by looping at intermediate turns (5). Each spring has head and foot turns (i.e. 1d) of generally U shape with the limbs of these turns lying in respective bounding planes of the network. The rows of springs (1, 2) are interconnected by transverse wires (7, 8) of zig-zag form at the location of the inter-linking (5, 6) of the opposed spring portions. <IMAGE>
Patent GB-2032444-A (GB)
Title: Polymer Suspensions
IPC: C08F2/32
Filed: 1979-09-20
Abstract: A process for the preparation of suspensions which comprise an aqueous phase in which a polymer is dissolved or swollen in water, suspended in at least one organic solvent which is not completely miscible with water, comprises homogenising (a) a monomer phase which comprises at least one water- soluble monomer, at least one polymerisation initiator and water, with (b) an organic solvent phase which comprises at least one organic solvent which is not completely miscible with water and at least one emulsifier; and polymerising the resulting homogeneous emulsion using an emulsion feed polymerisation method, which involves the initial introduction into a polymerisation vessel of a portion of the homogeneous emulsion which is then at least partially polymerised, the remainder of the emulsion being introduced gradually into the polymerisation and polymerised therein. The suspensions can be produced with a high polymer content together with an acceptable viscosity.
Patent GB-2061817-A (GB)
Title: A circular saw assembly
IPC: B27B5/32
Filed: 1979-10-25
Abstract: A circular saw blade is mounted on a driving shaft (1) by means of a mounting hub or collar (2, 3). The hub or collar is adapted to support a plurality of radially extending cutter arms (7) provided at their radial outer ends with cutting bits (8) the cutter bits (8) are located within apertures (11) of the circular saw blade, the cutter bits being arranged symmetrically to the plane of the blade whereby they can serve to profile the severed edges of strips (13) of material simultaneously with cutting of said material by the circular saw blade. <IMAGE>
Patent GB-2041038-A (GB)
Title: Silicate compositions for soil stabilisation and foundry sand moulding
IPC: C09K17/46
Filed: 1979-11-13
Abstract: A gelling composition useful for soil stabilisation and foundry sand moulding comprises water; an alkali metal silicate; an ester, particularly an alkyl alkanoate or one or more diesters of a C2 to C10 dibasic alkanoic acid; and rosin, a rosin ester, a rosin salt, a rosin acid or a rosin acid ester.
Patent GB-2039526-A (GB)
Title: Electroplating on rubber or rubber-like materials
IPC: C25D5/54
Filed: 1979-12-12
Abstract: A substrate made of electrically conductive rubber or rubber-like material has a discontinuous layer of electrically conductive material layer, e.g. a layer of metal powder, pressed into its surface while the rubber is cured before being electro-plated over the conductive layer. This method of electro- plating rubber and rubber-like material has general application, i.e. not just in relation to the described damage resistant member. Bonding of the plating to the rubber is thereby improved. The product may be a mechanical damage resistant member, e.g. a leading edge sheath for a propeller blade.
Patent GB-2072709-A (GB)
Title: Immersion tin plating compositions
IPC: C23C18/31
Filed: 1980-03-31
Abstract: An immersion tin plating solution, for plating over a base metal such as copper, by displacement, comprises a source of stannous ions (e.g. stannous chloride), thiourea as a complexing agent for the stannous ions, a mineral acid, and an inhibitor to inhibit etching of the base metal. The inhibitor is preferably an organo sulphonic acid, e.g. a phenol sulphonic acid, a salt thereof and permits the use of relatively high thiourea: stannous ion molar ratios, e.g. 10:1 or more, thereby making it possible to obtain increase yields of tin from the plating solution. The solution preferably also contains a hypophosphite reducing agent. The invention also comprises a method of tin plating a base metal by displacement by contacting a solution of the invention with the base metal.
Patent GB-2078413-A (GB)
Title: Intruder detecting systems
IPC: G08B15/00
Filed: 1980-06-03
Abstract: Lighting apparatus 16 is switched on by a sensing means 10, 11 such as an ultrasonic or microwave device, adapted to detect movement of a person or object within a monitored space. A light sensor 18 is also provided and connected to enable the switching means 15 when the ambient light falls to a predetermined level.
Patent GB-2047654-A (GB)
Title: Tin opener
IPC: B67B7/70
Filed: 1978-12-01
Abstract: A tin opener intended for opening a tin by wholly or partially cutting away a part of the tin from the remainder. The actual cutting operation is effected by a cutter roll (28) which can be rotated about an axis of rotation (29) and which during the cutting operation is rotated by a drive shaft (8) via a driving gear-wheel (15) and a gear-wheel (27). During the cutting process the tin is supported by a feed roll (16) which is in driving engagement with the tin and secured to the drive shaft. In order to enable a tin which is to be opened to be introduced between the cutter roll and the feed roll, or to enable a tin which has been opened to be removed therefrom, the cutter roll is mounted in such a way as to be capable of being rotated about a second axis (20) away from the axis of the drive shaft and the feed roll. The mounting is such that the axis of rotation is inclined in relation to the other axis and extends at a distance from the latter.
Patent GB-2051686-A (GB)
Title: Setting device of line start in a typewriter
IPC: B41J19/70
Filed: 1979-02-06
Abstract: A setting device of line start in a typewriter of the printing head type carried by a carriage (1) comprises at least one marginal stop (13) forming stop for the carriage (1). This marginal stop (13) is fixed on a part (19) mounted sliding against the action of a spring (24). A release-pawl (5), cooperating with a toothed rack (10), is carried by the carriage (1). A universal bar (11) disengages the pawl (5) from the toothed rack (10) upon the return of the carriage (1) and releases this pawl (5) at the end of the stroke. In order to prevent the pawl (5) from falling into a shifted notch of the toothed rack (10), the device is further provided with means for locking the pawl (5) into a position clear from the rack (10) during the displacement of the sliding part (19). <IMAGE>
Patent GB-2063380-A (GB)
Title: Rotary drive fuel pump
IPC: F02M41/14
Filed: 1980-10-03
Abstract: A rotary drive fuel pump includes a rotary distributor member including a head 3, in which is located a reciprocable plunger 9. A ring 25 surrounds the head and has a circumferential recess 26 in which is located a roller 27. A follower 23, 24 is engaged with the plunger and is engageable with the roller 27 to effect inward movement of the plunger. The roller 27 rolls in the recess after maximum inward movement has taken place to allow rapid outward movement of the plunger. <IMAGE>
Patent GB-2089027-A (GB)
Title: A Method of Determining the Bulk Strength of Strata
IPC: G01V5/10
Filed: 1980-10-21
Abstract: The bulk strength of rocks in strata is determined by logging a borehole with a neutron-neutron or neutron- gamma log to determine the Hydrogen Index log of the borehole and the lithology of the surrounding strata. The log is modified by a predetermined mathematical function for each lithology group of rocks in the strata. The bulk strength of each individual rock in the lithology is calculated from the modified hydrogen log using a polynominal expression.
Patent GB-2064184-A (GB)
Title: Random Number Generating System
IPC: G07C3/14
Filed: 1980-11-07
Abstract: A random number generator system for generating random numbers for the random sampling of production batches which are to be tested, for example, for quality control. The system comprises a microprocessor 3 which is responsive to a pseudo random generator 2 operated by a noise generator 1 and which is also connected to a random access memory, a read only memory, a display unit D and a key board T. The microprocessor 3 is further provided with a counting input 4 for counting products to be tested and a control output 3 for indicating when a product is to be inspected. <IMAGE>
Patent GB-2068653-A (GB)
Title: Connection means between an electrical cable and a conductor rail serving mobile consumers
IPC: H01R4/30
Filed: 1980-12-18
Abstract: Simple connection means for securing a connecting lug (10) on one end of an electrical cable (1) at any point along a conductor rail (2) consisting of a hollow metal profile section (3) with a lower tracking face (4) and an upper closure web (5) within a U-shaped plastics insulating envelope (6), comprises a parallelogram-shaped hole (7) sawn and/or filed in the web (5) within a cut-away portion of the plastics envelope (6), a correspondingly shaped clamping plate (8) integral with a bolt (12), a counterplate (9), and a nut (13), the clamping plate (8) being inserted through the hole (7) and secured in the section (3) by spontaneous rotation as the nut (13) is tightened on the bolt (12) to secure together the clamping plate (8), the closure web (5), the counterplate (9) and the lug (10). The length of the clamping plate (8) preferably exceeds its breadth, and the closure web (5) is preferably substantially flat. The plastics insulating envelope (6) is preferably cut away over the length of the counterplate (9), and a plastics insulating covering hood (14) is preferably provided over the connection. <IMAGE>
Patent GB-2078723-A (GB)
Title: Method of preparing aliphatic carboxylic acids
IPC: C07C51/353
Filed: 1981-05-12
Abstract: Carboxylic acids having 2 to 6 carbon atoms can be converted into their higher homologues by heating the acids with synthesis gas (carbon monoxide and hydrogen) at a pressure of at least 500 psi (35.5 bars) in the presence of a catalyst comprising a palladium or nickel compound (e.g. an oxide or salt of palladium or nickel, or a nickel carbonyl or hydrocarbonyl) and a group VB ligand (e.g. triphenylphosphine), and an iodide or bromide promoter (e.g. a palladium or nickel halide, or a separately-included alkyl halide). Homologous acids having one more carbon atoms than the starting acid are formed with good selectivity.
Patent GB-2079465-A (GB)
Title: Measure of true density
IPC: G01N9/26
Filed: 1981-05-29
Abstract: System for determining the true density of a fluent mixture such as a liquid slurry, containing entrained gas, such as air comprises a restriction 12 in pipe 10 through which at least a part of the mixture is passed. Density measuring means such as gamma-ray detectors 18, 20 and source 14 are of the mixture before and after its passage through the restriction. Solid-state pressure measuring devices 28, 30 are arranged to measure the pressure in the mixture before and after its passage through the restriction. Calculating means, such as a programmed microprocessor 26, determine the true density from these measurements using relationships given in the description. <IMAGE>
Patent GB-2101849-A (GB)
Title: Encrypting digital signals for phase modulation on a carrier wave
Inventor: NETTLESHIP ROBERT
IPC: H04L9/18
Filed: 1981-06-01
Abstract: In order to overcome the problems of low frequency and d.c. signals when phase modulating a digitally encoded input signal which has been encrypted using a key signal of a pseudo-random binary sequence form, on to a carrier, the clock frequency of the key signal is a factor 1/N times that of the clock signal used in a digitally encoding the input signal, where N is greater than but not equal to one. Values of N between 2 and 4 have been found to be useful.
Patent GB-2079419-A (GB)
Title: Pyrotechnic signalling devices
IPC: F41C3/02
Filed: 1981-06-05
Abstract: A pyrotechnic signaling device comprises a hand held projector 1 and a magazine 5 slideably mounted thereon and which carries a plurality of signal cartridges. The projector has a T- shaped slot 12 and the magazine is provided with a complementary projecting portion 7 to enable the magazine to slide relative to the projector and bring each signal cartridge in turn into a position for firing by the projector.   At one end of the projecting portion is a pair of pivot lugs which may bear against pivot bearings at one end of the slot so that the magazine may pivot about the lugs into a stowed position in which it lies closely alongside the projector. <IMAGE>
Patent GB-2109355-A (GB)
Title: Roasting of mixed sulphide ores or concentrates
Inventor: KRUGER ALBERT
IPC: C22B19/02
Filed: 1981-09-08
Abstract: In the roasting (oxidation) of mixed zinc sulphide/lead sulphide concentrates, to give an oxidic product for reduction, improved sulphur elimination and reduced lead volatilization are achieved by mixing 2-20% by weight of zinc oxide with the mixed sulphide materials, forming pellets of 2-15 mm diameter and roasting these under controlled oxidation conditions, firstly at a lower temperature and then at a higher temperature; preferably at 850 &cirf& -950 DEG C for the first stage and
Patent GB-2111599-A (GB)
Title: Compound carburettor
Inventor: YOKOYAMA HIROSHI
IPC: F02B31/08
Filed: 1981-11-13
Abstract: A compound carburettor for internal combustion engines comprising a primary bore provided with a stationary venturi portion, a secondary bore provided with a piston valve type variable venturi portion and a link mechanism which can forcibly open and close a secondary throttle valve together with a primary throttle valve so as to be able to obtain a smooth transit characteristic and power characteristic over the entire range from the low load to the high load of the engine. The time of beginning to open the secondary throttle valve with the opening of the primary throttle valve can be freely selected. The cross-sectional area ratio of the secondary bore to the primary bore is selected to be not less than 70:30 and the primary bore is so arranged that its center line may occupy a position out of a plane including the center line of the secondary bore and the center line of the piston valve. The piston valve is so arranged as to intersect at right angles with or obliquely downward with the center line of the secondary bore. The downstream side of the primary throttle valve of the primary bore is branched and is connected to the respective cylinders of an engine to be used, and further the downstream side of the venturi of the secondary bore is also branched and is connected to the respective cylinders. Near a inlet valve of the respective cylinders within each branch path of the secondary bore is respectively provided the secondary throttle valve secured to a single secondary throttle shaft. <IMAGE>