baber/WOPTO huggingface dataset:
Patent GB-1407020-A (GB)
Title: Production of metal-free chlorosilanes
IPC: C01B33/107
Filed: 1972-12-11
Abstract: 1407020 Metal-free chlorosilanes DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 11 Dec 1972 [11 Dec 1971] 57084/72 Heading C1A Iron-, aluminium- and titanium-free chlorosilanes (as defined) are prepared by the continuous reaction of lump ferrosilicon with chlorine or hydrochloric acid in a closed reactor which includes a supporting surface for the ferrosilicon and inlets and outlets for the reactants and reaction products, the temperature in the head zone of the reactor being kept below the sublimation temperature of iron chlorides by spraying in liquid chlorosilane, the gaseous reaction mixture being delivered to a washer charged with liquid chlorosilane, the products from the washer passing to a separator charged with liquid chlorosilane, and the gas which separates off is passed through a washing column charged with pure chlorosilane and the issuing gases condensed to form pure chlorosilane. As shown hydrogen chloride and superheated chlorosilane vapour at 180 C. are fed into a reactor 1 containing ferrosilicon lumps. The gas stream from the reactor passes into a cyclone 3 to separate entrained dust and iron chloride and is then passed to a Venturi washer 4 charged with circulating solids-free chlorosilane. Aluminium chloride and any iron chloride remaining are condensed out and pass with the circulating liquid into a solids/liquid separator 5. Condensed titanium chloride mixes with the circulating liquid. The gas mixture from separator 5 passes to a washing column 7 filled with Raschig rings where it is further washed with liquid chlorosilane. It then passes to condensers 8, 9 and 10 at temperatures of from +20 to -30 C. The condensate flows to a receiver 12 from which part is returned to the installation for cooling and washing purposes, the remainder flowing to storage tank 13 through an overflow. The stream from 12 passing to the reactor is evaporated and superheated at 17. The solids from the separator 5 are run off into a trough drier 14, a gas stream consisting of SiCl 4  and TiCl 4  passing through a heated tower 15 filled with NaCl to removed entrained AlCl 3 . The SiCl 4 /TiCl 4  mixture is condensed and subjected to fractional distillation in column 16.
Patent GB-1188318-A (GB)
Title: Electric Power Control by Antiparallel-Connected Semiconductor Controlled Rectifiers
Inventor: SCHEIDL ANTAL
IPC: G05F1/455
Filed: 1967-12-15
Abstract: 1,188,318. Control of A.C. power. ELEKTROIMPEX MAGYAR HIRADASTECHNIKAI ES FINOMMECHANIKAI KULKERESKEDELMI VALLALAT. 15 Dec., 1967, No. 57184/67. Heading H2H. [Also in Division G3] A circuit for controlling reverse parallel connected thyristors 7 comprises a pair of capacitors charged through diodes arranged in push-pull connection from an A.C. supply, a variable D.C. bias on the diodes provided by a control means 1 which varies the charging time, the capacitor voltages being shaped in signal forming units 3 the outputs from which are differentiated in units 4, into square waves amplified and supplied through a transformer 6 to the control electrodes of the thyristors. The circuit partly compensates for mains voltage variations as a low voltage causes the amplitude of output signals from unit 2 to decrease and hence advance the firing point of thyristors 7. The control input signal to means I may be provided by a programme unit. The arrangement may control the lighting in a television or motion picture studio.
Patent GB-1412599-A (GB)
Title: Method and apparatus for producing substantially homogeneous cord-free glass
IPC: B01F5/06
Filed: 1972-12-14
Abstract: 1412599 Delivering molten glass CORNING GLASS WORKS 14 Dec 1972 [15 Dec 1971 (3)] 57709/72 Heading C1M Molten glass is delivered through a conduit 14 which has extending across its entire internal diameter d m  a plurality of helical vanes 12 so that the leading edge of 20 of each vane divides each stream of glass into two end then rotates the molten glass before further division by the subsequent vane thereby producing second streams in a tube having n vanes, the viscosity of the glass thus delivered being controlled by means of electric heating windings 27 and a cooling jacket 21 around the conduit 14. The ratio of the internal diameter d m  of the conduit to the thickness of the vanes should be greater than 15.
Patent GB-1456229-A (GB)
Title: Portable calculator system
IPC: H02J7/00
Filed: 1973-12-14
Abstract: 1456229 Supply systems for portable calculators TEXAS INSTRUMENTS Inc 14 Dec 1973 [30 March 1973] 58039/73 Heading H2H A portable calculator 1 comprises battery receiving members 20-23 capable of receiving a first set or a second set of batteries for supplying a voltage to the calculator, and a switch SW3 which is opened when the receiving member 20 is occupied by a battery of the second set. The first set of batteries consists of three Ni-Cd rechargeable batteries B1-B3 which supply a voltage to the calculator via output terminals OUT when a manual switch SW1 is closed. Alternatively a battery charger may be connected to input terminals EXT IN to supply the calculator and charge the batteries via a resistor R. The connecting of the charger automatically opens a switch SW2. If the Ni-Cd batteries are replaced by the second set of four non-rechargeable alkaline batteries, the microswitch SW3 is automatically opened and the battery voltage is supplied to the calculator via the closed switches SW2, SW1. In the event of the battery charger being connected to the input terminals EXT IN, the opening of the switch SW2 and the already opened switch SW3 prevent recharging of alkaline batteries.
Patent GB-1346627-A (GB)
Title: Hygroscopic acrylonitrile polymer fibers
IPC: C08L33/20
Filed: 1971-12-16
Abstract: 1346627 Acrylonitrile copolymer composition ASAHI KASEI KOGYO KK 16 Dec 1971 [18 Dec 1970 14 Sept 1971] 58451/71 Heading C3P A composition for spinning into polymer fibres is prepared from (a) a copolymer of at least 60% by wt. of acrylonitrile, 0À5-40% by wt. of a monomer of formula where R 1  is hydrogen or methyl and either each of R 2  and R 3  is C 1  to C 3  alkyl, hydroxyalkyl or alkoxyalkyl, the total number of carbon atoms in R 2  and R 3  being not greater than 4, or R 2  and R 3  together with the nitrogen atom form a pyrollidine or morpholine group; and optionally a third monomer; and (b) 0À1 to 15% by weight of the combined polymers of a polymer comprising at least 65% by wt. of a vinylpyridine, optionally having any number of methyl or ethyl groups substituted in the ring. The composition is dissolved in 55-85% nitric acid to form the spinning liquor; polymer (b) may be prepared in solution in nitric or sulphuric acid and then added to a nitric acid solution of polymer (a). The nitric acid causes hydrolysis of the copolymer (a). Fibres spun from the solution are hygroscopic and can be dyed with acid dyes. In the examples the second monomer of polymer (a) is N,N-dimethylacrylamide, N-methyl- N - hydroxyethylacrylamide, N - methacryloylmorpholine, N,N-diethylmethacrylamide or, in comparative examples, acrylamide or N-methylacrylamide. Polymer (b) is a homopolymer of 4- vinylpyridine or 2-methyl-5-vinylpyridine or a copolymer of the latter with methyl acrylate. In one example polymer (a) also contains methyl acrylate, as a third monomer.
Patent GB-1208790-A (GB)
Title: Improvements in or relating to static balancing of vehicle wheel and tyre assemblies
Inventor: GREEN MILTON JERE
IPC: G01M1/32
Filed: 1968-12-10
Abstract: 1,208,790. Balancing of wheel and tyre assemblies. M. J. GREEN and B. J. GREEN. 10 Dec., 1968 [15 Jan., 1968], No. 58667/68. Heading B7C. A method of statically balancing a wheel and tyre assembly 11, utilizing balance weights of a single predetermined weight value, comprise the steps of determining the position of the light spot LS of the assembly on a static balancing apparatus, placing a mass T of double said predetermined weight value on the wheel rim 13 at two points at each of which the radius makes an angle of between 40 and 54 degrees with the radius at said position, moving said masses along the rim to locations equidistant from said position until the assembly is balanced and affixing a pair of said balance weights at each of said locations. Mass T may be either a single test weight constructed as described in Specification 1,091,375, or a pair of balance weights of preferred weight 1À1 oz. When the assembly is balanced as indicated by bubble gauge 12, a balance weight is placed on each side of the rim at the position of mass T. Reference has been directed by the Comptroller to Specification 1,091,375.
Patent GB-592063-A (GB)
Abstract: 592,063. Pressure gauge diaphragms. K.D.G. INSTRUMENTS, Ltd., and YEOELL, A. March 15, 1945, No. 6570. [Class 106 (ii)] A compound flexible diaphragm is formed as a number of separable layers disposed face-toface and secured around their peripheries to another member to form therewith a capsule, at least one of the layers being attached to an operating member so that the stiffness of the compound diaphragm with respect to the operating member differs according to the direction of the force applied to the diaphragm. As shown, the capsule comprises a rigid member 10 to which is secured in a fluid-tight manner the flexible diaphragm 13, 14 by a packing ring 12 and bolts 9. The diaphragm 13 is relatively thin and continuous over the whole if its area and is secured to a member 17 projecting through an aperture 16 in the diaphragm 14 which is relatively stiff and is secured to a member 21. The members 17, 21 have hooks engaging over a member 19 secured to a rockshaft 18 of an indicating instrument which is spring-urged to keep the member 19 in contact with one or both of the hooks. When the pressure in the capsule is below atmospheric only the diaphragm 13 is affected, while when the pressure is above atmospheric both diaphragms are affected, and a bigger change of pressure is needed to move the indicating mechanism a corresponding amount. In a modification (Fig. 3, not shown), the members 17,21 actuate separate indicating mechanisms for negative and positive pressures, respectively.
Patent GB-592816-A (GB)
Abstract: 592,816. Gas burners. SCHAFER, J. May 25, 1945, No. 13094. Convention date, July 19, 1941. [Class 75 (i)] In a gas burner, several mixers 7, 13, 17, Fig. 1, surrounded by a tube 12 are arranged between an injector jet 5 and the nozzle, air being drawn through spaces between the mixers to mix with the gas. The first mixer is constituted by a prolongation 7 of the jet 5 provided with radial slits 8, the mixture then passing into a second mixer 13, Fig. 1, which may comprise a convergent cone 13a and a divergent cone 13b and may be supported in a surrounding tube 12 by a perforated ring 14. The air is admitted to the radial slit 8 and to slits 16 in the cone 13b through apertures 10 controlled by a rotatable slotted casing 11. Beyond the mixer 13 may be provided a further mixer 17 operated by contraction of the gaseous stream, and a flame regulator comprising a central tube 19 and a crown of peripheric channels 20, a burner cap 21 being provided if an elongated rather than a tapered flame is required. The mixer 17 may be omitted and the same result obtained by bending the tube as in Fig. 5. In the modification of Fig. 6, the mixture passes through a convergent cone 22, a divergent cone 25 and a constricted tube 27, air being supplied through apertures 10, 23 to mix with the gas through crowns of openings 26, 28.
Patent GB-1331078-A (GB)
Title: Method of and an apparatus for manufacturing a moulded con struction element or whole vuildings of curable high-viscosity  building materials
IPC: B29C33/00
Filed: 1970-12-18
Abstract: 1331078 Moulding a building element B CHRISTENSEN 18 Dec 1970 [23 Dec 1969] 60117/70 Heading E1S A building element, e.g. a wall 28, is moulded from a curable, high-viscosity material, e.g. an epoxy resin or concrete, by a travelling mould 10 which is fed continuously with the material and lays a fresh string 22 thereof on top of a previously-laid hardened string 23, the mould having a transverse front plate which carries a large number of wires or narrow tubes (not visible) parallel to the direction of travel which form longitudinal cavities in the string during moulding, and the mould also having means 19 for supplying bands 20 of reinforcing or insulating material, e.g. aluminium, steel or glass fibres, which are applied to the side surfaces 21 of the string during moulding. The mould 10 includes moulding surfaces formed by driven endless belts 7, 8 carried by a supporting member 10a which is mounted on a crane jib 2 with supply pipes 3, 4 for the curable material. The mould may have heating or vibration means to speed the curing. The wires or tubes may be plastics coated and are concentrated near the centre line of the mould, and in the case of tubes, may inject a gas into the cavities. A curable reinforcing material may additionally be sprayed on to the belts 7, 8 and thus passed into the mould.
Patent GB-664385-A (GB)
IPC: A61G7/05
Abstract: 664,385. Bedsteads. DOUGLAS, A., and DOUGLAS, R. H. Dec. 23, 1949. [March 4, 1949] No. 32954/49. Class 52 (ii). A wheeled bed for invalids com prises an undercarriage provided at its ends with castor wheels and spring-borne midway of its lengtl on a wheeled axle, a bedding sup port carried between transversely spaced tublar longitudinals, a transverse foot member telescopic ally engaged in the tubular longi tudinals and braking means acting by frictional contact with the ground and operable from the head end of the bedding support As shown, the undercarriage. formed by upper and lower longitudinals 1, 1<SP>1</SP> interconnected by angle members 3, 4, 5, 12, 13, 14, 7, 15 and provided with castor wheels 20, 20<SP>1</SP> which do not normally touch the ground is supported by pistons 36 secured to a wheeled axle 19 and slidably engaging against spring action in cylinders 34, secured to angle members 29, 30. Initial compression may be put upon the springs by rod 39 and nut 40. The bedding support, formed by tubular longitudinals 16, between which a wire mattress is stretched, is connected to the vertical end angles, and, by arms 22, to the upper longitudinals of the undercarriage and is provided with a transverse foot member 24 having hinged end members 25, telescopically engaged in the tubular longitudinals 16 so that the bedding support may be lengthened and access may be had to the foot end of the bed. Brake rods 45, 46 covered with, e.g. grooved rubber can be raised against the action of springs 55, 56 by pulling the handle 50 upwards and engaging it with the knob 60 on the panel 8 at the head end of the bed so that the bed can be moved. In a modification the undercarriage diminishes in width towards each end, a single castor wheel, at each end, being provided.
Patent GB-778780-A (GB)
Abstract: 778,780. Sharpening cultivating discs. LASKER, A. H. A. June 2, 1954, No. 16298/54. Class 60 A friction driven device for sharpening cultivating discs comprises a base 4, supporting framework 12 extending upwardly from the base, an abrasive wheel 15 mounted for rotation at one end of the the framework, and means 27 mounted at the other end of the framework to control the engagement of the wheel 15 with the disc to be sharpened. The means 27 consists of a lever pivoted at 29 to a bracket 23 secured to the framework 12 and provided at one end with a castor 31. A handle 13 is connected to the framework 12 so that when this handle and the lever 27 are moved apart the castor 31 engages and aligns itself with a concavity 32 in the disc 1 while the abrasive wheel is brought against the edge of the disc. The abrasive wheel is driven by frictional contact with the disc and journalled in a bracket 18 which is secured to the framework 12 so that it may be rotated through a right angle if it is desired to use the grinding wheel with its axis horizontal. The discs 1 are driven by a belt 2 during the sharpening operation. If the discs are concave on their left-hand sides the brackets 18 and 23 may be interchanged.
Patent GB-2004588-A (GB)
Title: A fuel injection system for an internal combustion engine
IPC: F02M47/00
Filed: 1978-09-22
Abstract: The system comprises a regulatable fuel injection pump 2, a fuel injection valve 9 including a valve needle 12 biased by a spring 13 into its valve- closing position. The spring and one end of the needle are housed in a chamber 14 of the valve. In order to accelerate valve closure after each injection and to prevent fuel from dribbling, the spring-biased end of the needle is arranged to operate as a hydraulic piston intermittently acted upon by pressure of fuel delivered to this end by another fuel pump 4 connected to the injection pump 2 via a timing device 3 regulating the intermittent operation of the other pump 4 in such a way that it will deliver the fuel at a variable interval after the fuel delivery by the pump. The additional closing pressure thus exerted on the valve needle will slowly be reduced again by letting the fuel used for this purpose leak through a pressure-reducing passage 20 in a leak-fuel duct 19 back into a fuel reservoir 7. <IMAGE>
Patent GB-2010866-A (GB)
Title: Styrene polymers having improved heat properties
IPC: C08F20/00
Filed: 1978-11-04
Abstract: Styrene polymers having improved heat properties are prepared by copolymerising styrene with a compound having an N-substituted imide group, in particular a bis-maleimide or a mono-maleimide, to produces copolymer containing 0.1 to 20% by weight of units derived from the said compound, the said units being distributed between units derived from styrene. The imide is gradually incorporated into the polymerisation medium as the styrene polymerises, the polymerisation preferably being carried out in solution, emulsion or suspension.
Patent GB-2008464-A (GB)
Title: Improvements in methods of operating and treating evacuated chambers
IPC: B08B7/00
Filed: 1978-11-23
Abstract: Workpieces, such as silicon wafers 20, are treated with a halogen etching gas in a vacuum chamber 10 in order to etch through a masking layer 21 on the wafers 20. Hydrogen is then introduced into the chamber 10 and a hydrogen gas plasma is generated, which reacts with residual halogen in the chamber. Finally, an oxygen gas plasma is generated to remove the etch resist layer 22. Due to the absence of residual halogen, no undesirable by products are formed when the oxygen gas plasma is introduced. <IMAGE>
Patent GB-2015144-A (GB)
Title: Motor Vehicle Lamp
IPC: F21V9/08
Filed: 1979-02-01
Abstract: A lamp or group of lamps for exterior motor vehicle illumination devices such as parking lights, brake lights, direction indicators etc., each includes a bulb (33) supported on a base (20) and enclosed by a transparent cover (50). A transparent cap (43) having prismatic areas (26, 27) is arranged between the bulb (33) and the cover (50) for focusing the bulb flux into a beam. <IMAGE>
Patent GB-2015398-A (GB)
Title: Low Pressure Die Casting
IPC: B22D18/04
Filed: 1979-03-23
Abstract: A low pressure die casting apparatus comprising two spaced furnaces (1, 2) each containing a crucible for molten metal, a riser tube in each furnace extending to an apertured nozzle (4) which is connectable to a die movable along rails to and from each furnace such that the molten metal in the inoperative furnace can be treated, e.g. de-gassed or have oxide removed. The metal is raised from each furnace by gas pressure. <IMAGE>
Patent GB-2021894-A (GB)
Title: Monocular range-finders
IPC: G02B7/34
Filed: 1979-05-17
Abstract: A portion of an image of an object produced by the objective lens e.g. in single lens reflex cameras, is projected onto image sensors (CTD 1, CTD 2) using homologous microprism grids arranged in an enantiomorphic fashion parallel to each other. A pulse generator (3) produces a common pulse train of frequency fA for read-out of the image sensors, which are or utilise charge transfer devices. The output signals of the sensors (CTD 1, CTD 2) are fed to a differential amplifier (4) which forms a lens-setting signal from the difference in brightness between them. The difference signal, integrated over one or more line periods, has a minimum value when the range setting of the objective lens is correct. The output signal is fed to an integrator (5), and used to drive a display means in the case of semi-automatic range setting so that manual range setting can be effected by watching the display whilst adjusting the objective lens. In a fully automatic arrangement a lens drive starts from the lens close-up position and adjusts the lens to remoter setting until a first minimum is detected, whereafter a fine setting can be carried out. <IMAGE>
Patent GB-2049441-A (GB)
Title: Board game
IPC: A63F3/00
Filed: 1979-05-24
Abstract: The board comprises a track (1) along which counters will be moved as determined by a random number selector, the players acting upon instructions carried by a space (2) on which the counter finally lands. The central region of the board is divided into areas (3) carrying pictures of scenes. Sets of picture pieces carrying words on their backs can be placed to overly the pictures to illustrate improvements. Dividing strips can be pegged into holes along the margins of each picture and carry models. The pieces could build up into 3-dimensional buildings. <IMAGE>
Patent GB-2025400-A (GB)
Title: Pyridyloxyphenoxy unsaturated derivatives and herbicidal compositions thereof
IPC: A01N43/08
Filed: 1979-05-30
Abstract: Novel pyridyloxyphenoxy unsaturated derivatives having the formula   <IMAGE> wherein Z represents -CH2OH, COOR or -COSR', wherein R represents a hydrogen atom, an organic or inorganic salt or an alkyl, haloalkyl, alkenyl, alkynyl, phenyl, halophenyl, alkylphenyl, benzyl, alkoxyalkyleneoxyalkyl, pyridylmethyl or alkoxyalkyl group, and R' represents an alkyl group are disclosed, together with processes for their preparation, herbicidal compositions containing them and processes for treating weeds using such compositions.
Patent GB-2024400-A (GB)
Title: Heat transfer system
IPC: F28F1/02
Filed: 1979-06-06
Abstract: A heat transfer system, in particular a floor heating system, comprises tubes 5 of plastics material arranged in a settable or hardenable material 6 (e.g. a floor finishing layer of cement skim), the position of the tubes being fixed by holding means e.g. 3,4 relative to an underlying structure (e.g. concrete 1 overlaid by a heat-barrier material 2), and the tubes being in the main part of their length of oval or elliptical cross-section. The tube major axis may be normal to (as shown) or parallel to (Fig. 2) the surface of the said underlying structure. The pressure of the heat transfer medium applied to the inside surface of the tubes causes deformation of the tube wall in the regions thereof having the larger radius of curvature, whereby the tubes are force-lockingly applied against the associated surface of the floor finishing layer and heat transfer at these regions is substantially improved. <IMAGE>
Patent GB-2061208-A (GB)
Title: Vehicle turntable
IPC: B60S13/02
Filed: 1979-07-30
Abstract: A vehicle turntable has a pair of spaced-apart wheel-supporting track members 10, 11 fixed by a spider mounted about and rigidly connected to a centrally located friction-reducing bearing which is mounted upright within a pit, each track member being marginally above ground and having lockably upstandable wheel-stops near each track member end, each wheel- stop being stowable substantially flush with its associated surface when individually tripped, whereby a vehicle driven forward onto said track members traverses a stowed pair of said wheel-stops respectively pre-tripped at the approach ends of said track members, and then clears the upper extremity of said bearing during transit along said track members before the front wheels of said vehicle engage and are halted by the remaining upstanding pair of wheel-stops. <IMAGE>