baber/WOPTO huggingface dataset:
Patent GB-753306-A (GB)
Title: Improvements relating to helicopters
Inventor: FORSYTH ARCHIBALD GRAHAM
IPC: B64C27/18
Filed: 1952-09-25
Abstract: 753,306. Jet propulsion plant. FAIREY AVIATION CO., Ltd. Dec. 23, 1953 [Sept. 25, 1952], No. 24095/52. Class 110(3) [Also in Group XXXIII] A helicopter having a rotor driven by one or more ram jets has one or more rockets mounted adjacent each ram jet for starting. A ram jet 10 is mounted on the helicopter blade 11 to drive it. A rocket starting cartridge 12, which is ignited by a striker pin 13 released by mechanism 14, is mounted on the blade 11 inboard of the ram jet. The ram jet is ignited by gases from the cartridge 12 passing through a passage 16. In a modification, the starting cartridge is mounted in a fairing outboard of or beneath the ram jet. The remains of the cartridge may be arranged to fall out when the cartridge is exhausted. More than one cartridge may be provided for each ram jet. Reference has been directed by the Comptroller to Specification 715,391.
Patent GB-1147399-A (GB)
Title: Improvements relating to photographic apparatus
IPC: G03B15/05
Filed: 1967-05-24
Abstract: 1,147,399. Flash apparatus. INTERNATIONAL POLAROID CORP. May 24, 1967 [May 25, 1966], No.24219/67. Heading G2A. Photographic flash apparatus comprises discharge tube means, e.g., a pair of gas filled discharge flash tubes or strobotrons 10, 12 having starter electrodes 18, 20 supplied with high voltage pulses. Strobotron 10 is supplied from a capacitor 22, while strobotron 12 is supplied by a capacitor 24. The strobotrons are fired alternately by high voltage pulses supplied by a control circuit having a squarewave generator 32. The output from transistor 70 which is 180 degrees out of phase with the signal across resistor 60 is fed through coupling capacitor to a silicon rectifier 84. The signal from resistor 60 is fed through a coupling capacitor 62 to a silicon rectifier 66. The rectifiers 66, 84 alternately produce high voltage pulses 180 degrees out of phase, at the secondary coils 94, 107 of transformers 92, 106 respectively which are fed to the electrodes 18, 20. Triggering of strobotron 12 allows capacitor 24 to discharge to produce a light pulse of a width depending on the resistance of the strobotron and capacity of capacitor 24. When strobotron 10 is triggered capacitor 22 discharges until capacitor 24 is recharged, the time required to charge the capacitor 24 determines the duration of the light pulse. A time delay circuit 112 for controlling the collective output of the strobotrons has a silicon rectifier 114 in parallel across the pulse generator. Electrode 120 of rectifier is connected to a wiper arm 122 of a potentiometer 124 and to a capacitor 126 of a timing network. Thus, rectifier 114 terminates the production of voltage pulses fed to the electrodes 18, 20 after a time which is a function of the values of capacitor 126 and potentiometer 124. The wiper arm (122) Fig. 2 (not shown) is varied by an arm (140) according to the focusing of objective lens 137. The flash apparatus is within a housing (46) carrying a reflector (148). Alternatively, the potentiometer 124, Fig.1, may be replaced by a photo-responsive element receiving light from the subject. In another embodiment resistor 46, Fig.1, is replaced by a resistor 156, Fig. 3, in series with a photo-conductor 158 receiving light through an optical fibre 161 from strobotrons 10, 12. The squarewave generator 32 may be replaced by a sawtooth wave generator or pulse generator to produce the required changes in voltage on the coils 90, 104 of transformers 92, 106.
Patent GB-1517887-A (GB)
Title: Field magnet for electromagnetic centrifuging in a continuous casting ingot mould
IPC: B22D11/049
Filed: 1977-06-09
Abstract: 1517887 Magnetic stirring CEM-COMPAGNIE ELECTRO-MECANIQUE 9 June 1977 [14 June 1976] 24232/77 Heading B1C An electro-magnet 3 for the centrifuging the molten metal in a continuous casting mould 1 comprises an annular magnetic armature situated in an annular tank 2 adapted to receive circulating water for cooling the casting mould which it encircles. The field windings are energised from a three-phase A.C. supply and the armature is formed to define six wide teeth 6 A to F constituting salient peripheral poles and the field windings are provided by six prefabricated polar coils 12u, v, w and 13u, v, and w, each mounted around a respective tooth 6 of the armature. Two of the coils are connected to each phase of the supply with the two coils of each phase being mounted on two opposite armature teeth and connected so that their magnetic fluxes are added together when energised. One of the two coils 12 of each phase is placed at the bottom of two slots one on either side of the respective tooth encircled by the coil and between it and the next adjacent tooth whilst the other coil 13 is placed at the top of the two slots contiguous to the opposite tooth, the coils of different phases partially overlapping one another in each slot.
Patent GB-710626-A (GB)
Title: Improvements in or relating to rectifying installations comprising two or more gas-filled or vapour-filled discharge tubes traversed by current in series
IPC: H02M7/15
Filed: 1952-09-29
Abstract: 710,626. Rectifying. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 29, 1952 [Oct. 2, 1951], No. 24331/52. Class 38(2) In a rectifying circuit in which the current traverses pairs of discharge type converters such as 1, 2 in series, the exciting electrode 7 of that valve 2 with the more positive cathode is energized by an independent source of voltage 9, and the exciting electrode 10 of the other valve 1 is connected to some point, e.g. the positive D.C. output terminal, which is positive relative to its corresponding cathode at the moment of ignition. Thus the provision of separate energizing means for electrode 10 is avoided. The invention is described as applied to a three-phase circuit with pairs of valves in series, Fig. 2 (not shown), and back to back arrangement of valves for single and three-phase circuits, Figs. 3, 5 (not shown). As an alternative to the D.C. terminal the mid or neutral point of the imput transformer secondary winding or windings may be selected.
Patent GB-358199-A (GB)
Title: Improvements in chimney cowls
IPC: F23L17/10
Filed: 1930-08-14
Abstract: 358,199. Chimney tops. O'BRIEN, T. R., 19, Hamilton Garage, Highbury Park, and SHORTS, F. C. R., 51, Hornsey Lane, both in London. Aug. 14, 1930, No. 24380. [Class 25.] A chimney cowl comprises a wind - directed upper tubular member with flared lateral outlets for the escape of smoke and a coaxial lower member extending with an annular clearance into the lower end of the upper member, the upper member being rotatably supported by means of an axial pivot pin rotatably mounted in a surrounding axial tube, one of the axial members being secured at its upper end in the upper tubular member beneath a diametrically pivoted baffle and the other being carried by the lower tubular member. As shown, the upper tubular member 1 carries an axial tube 6 closed at its upper end and secured by bars 7, 8. This tube fits over and rotates upon an axial rod 9 fixed at its lower end to a U-shaped member 10 fixed across the lower tubular member 11. A baffle 14 carried by a horizontal pivot pin 15 in the upper part of the cowl moves under the action of the wind to close the outlet opposed to the direction of the wind. The ends of the pin 15 may be supported in washers 17 secured to the sides of the tubular member, cups 18 being fitted over the projecting edges of the pin.
Patent GB-462015-A (GB)
Title: Improvements in or relating to direction finding aerial systems
IPC: G01S3/08
Filed: 1935-08-31
Abstract: 462,015. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and SMITH, S. B. Aug. 31, 1935, No. 24405. [Class 40 (v)] A pair of Adcock aerials G, G<1> and H, H<1>, together with the associated receiver E, are mounted or a hollow shaft A, elevatec several wavelengths above the ground. The shaft is rotated as a whole by a hanc wheel B, over a calibratec scale C, and the tuning oj the receiver is remotely con trolled through insulating rods K, K. The horizonta feeders F are screened at D<1> The received signals are reproduced on a loud speaker L, the output fron which is received at the bottom of the shaft K by a microphone M coupled to headphones N. Or the incoming signals may actuate a neon lamp or oscillograph which, in turn, energizes lightresponsive means located at the base of the shaft A.
Patent GB-406704-A (GB)
Title: Improvements in or relating to high tension electric cables
IPC: H01B9/06
Filed: 1932-09-02
Abstract: 406,704. Cables. STANDARD TELEPHONES & CABLES, Ltd., and WEBB, J. K., Connaught House, Aldwych, London. Sept. 2, 1932, No. 24499. [Class 36.] To provide for expansion of the impregnating compound in a cable comprising a conductor C having impregnated pervious insulation P, such as paper, and enclosed in a lead sheath L, an elastic sheath E which is impervious to the impregnating compound and which is preferably of rubber, such as that known under the Registered Trade Mark " Du Prene " synthetic rubber, is disposed immediately over the fibrous material P. Metallised capillary reservoirs of the kind described in Specification 340,303 may be provided in the insulation P. The Figure shows two such reservoirs R. Specification 379,704 also is referred to.
Patent GB-933194-A (GB)
Title: Polyethylene compositions
IPC: C08L23/06
Filed: 1961-07-06
Abstract: A composition giving films and coatings of improved clarity comprises a polyethylene of density 0,94 to 0,97 and of melt index 0,5 to 10, blended with a minor amount, e.g. 0,1 to 10%, of an additive which is a linear polyethylene having a reduced viscosity of at least 2,9 or a linear ethylene/butene copolymer having a reduced viscosity of at least 4,0, said additive having a density of at least 0,935.  The additive may be blended mechanically with the parent polymer or either polymer may be present during the polymerization of the other polymer.  In Example IV polyethylene pellets of density 0,96 are present during the polymerization of ethylene using AlCl3+Sn(C6H5)4+VOCl3, Specification 904,985 is referred to.
Patent GB-585008-A (GB)
Title: Improvements connected with pumps for beer engines
IPC: B67D1/02
Filed: 1944-12-08
Abstract: 585,008. Beer engines. SMITH, C. D., and OTTON, D. H. Dec. 8, 1944, No. 24573. [Class 102 (i)] A pump assembly for a beer engine comprises a pump cylinder a and end covers d, h, secured in position by a sleeve nut l screwed into a yoke m. The straps n are pivotally connected to the carrier ring d<2> by means of trunnion pins d'. The pivoted yoke m is carried by the lower end of the straps and within the enlarged central section of the yoke m is located the screwed sleeve nut l which serves both as a joint union nut and a means for securing cylinder a and the end covers d, h in position thus forming fluid-tight joints.
Patent GB-770324-A (GB)
Title: Improvements relating to wheeled portable appliances for producing and delivering heated air
Inventor: GREAVES BRYAN HAROLD
IPC: F24H3/06
Filed: 1954-08-28
Abstract: 770,324. Exhaust silencers; supplying liquid fuel. DRAGONAIR, Ltd. Aug. 29, 1955 [Aug. 28, 1954], No. 25048/54. Classes 7 (2) and 7 (3). [Also in Group XIII] Silencers.-A silencer in which exhaust combustion gases from an air heater 7 and 'from an I.C. engine 9 are cooled by air from a fan 8 driven by the engine (see Group XIII) comprises an outer tube 19, an inner perforated tube 22, asbestos or glass wool 23 in the space between them, and inlets 25, 26, 30 for the heater exhaust, engine exhaust, and coolant air respectively. Supplying liquid fuel.-The fuel tank 11 of the engine 9 is supplied with fuel through a pipe 38 from a relief valve in a fuel pump 32 which feeds fuel from a main tank 10 to the burner of the air heater 7. The pump 32 supplies more fuel than the burner needs and the excess flows to the tank 11. An overflow pipe 39 returns excess fuel from the tank 11 to the tank 10. Specifications 664,168, 735,152 and 747,113 [all in Group XIII] are referred to.
Patent GB-1348559-A (GB)
Title: Measuring chamber for measuring certain properties of particles suspended in liquid
IPC: G01N15/14
Filed: 1971-04-19
Abstract: 1348559 Measurement MAX-PLANCK-GES ZUR FORDERUNG DER WISSENSCHAFTEN 19 April 1971 [23 March 1970] 25076/71 Heading B1X [Also in Divisions Gl and G2] While particles entrained in a liquid medium are flowing through a relatively small aperture the flow path is concentrated, e.g. by a reduction in pressure as it passes into the aperture. Optical properties of the particles may be measured by microscopic examination of their radiant absorption characteristics while voltage differences on opposite sides of the aperture may be used to measure their size distribution.
Patent GB-694565-A (GB)
Title: New or improved devices for the fixing of members to concrete or like supports
Inventor: BRICK NORMAN ALFRED
IPC: E04B1/41
Filed: 1949-09-29
Abstract: 694,565. Girders. DRAGE, G. E. Sept. 20, 1950 [Sept. 29, 1949], No. 25078/49. Class 20(iv) For fixing wooden &c. members to concrete supports such as beams a box-like metal body 8 preferably of wedge shape is fixed in the concrete during moulding so that its base is flush with the surface to which the member is to be fixed a filling 1 as of pugging material such as coke breeze, or hard lagging being accommodated within the body into which selfthreading screws can be screwed to secure the member. In the form shown the filling is precast and has two holes 5, 6, through which nails 12, 13 are passed so as to penetrate corresponding holes in the metal body and the bottom member of the mould. After the concrete has set and the mould is removed the projecting nail points serve to position the wooden members whilst the screws are inserted. Rein. forcement wires 14, 15 may be fixed to the metal body. The filling material may be inserted after two spaced nails have been driven through the base of the body which may be perforated to receive the selfthreading screws.
Patent GB-1477953-A (GB)
Title: Pressurisable metallic liquid contact provided in annular  gap between stationary and rotatable annular parts of a  liquid metal electrical connector
IPC: H01R39/30
Filed: 1975-06-11
Abstract: 1477953 Dynamo-electric machines SIEMENS AG 11 June 1975 [25 Sept 1974] 25105/75 Heading H2A A liquid metal electrical connection comprises a rotatable annular part 4 radially spaced from a stationary annular part 5 to form a main annular gap 1 filled with liquid metal, and annular side gaps 2 communicating with the main gap 1, the parts 4, 5 being disposed, in use, with their axes horizontal, the liquid metal in the side gaps being caused to rotate, the cross-sectional area of the side gaps varying round the periphery of the electrical connection to provide for a variation in the velocity of the liquid in the side gaps and thus a variation in the centrifugal force to balance the liquid pressure and so prevent leakage of liquid metal from the connection. The connection shown is intended for use in a homopolar machine. The liquid metal in the side gaps is rotated by an external pump 8. The cross-sectional area of the side gaps decreases from the top of the connection to the bottom, Fig. 3, so that the liquid velocity is highest at the bottom where the pressure is also greatest. Since the liquid in the side gaps is rotated by external pumps, leakage of liquid from the main gap 1 is prevented even when the rotatable part 4 is stationary.
Patent GB-1089982-A (GB)
Title: Improvements relating to backing members for use in welding
Inventor: DICK NORMAN THOMAS
IPC: B23K9/035
Filed: 1963-06-25
Abstract: 1,089,982. Welding by fusion. BABCOCK & WILCOX Ltd. June 22, 1964 [June 25, 1963], No. 25147/63. Heading B3R. A backing member for use in electro-slag welding curved workpieces consists of a flexible strip 1 (Fig. 1, not shown), e.g. of copper to which a flexible looped coolant conduit 2 is connected, e.g. by brazing, between its loops at locations 3 distributed lengthwise of the strip 1. The conduit 2, e.g. of copper, is in the form of a helix having straight portions brazed to the strip 1. The strip 1 has a groove for shaping the weld and a hook 8 serving to connect it to a similar strip. Such backing members are used to support a circumferential weld between pipes. The backing members are held internally of the pipes by wedges clamped by bridge members temporarily welded across the gap.
Patent GB-536216-A (GB)
Title: Improvements in or relating to the manufacture of amino cyclic sulphonamides and their derivatives
IPC: C07D239/69
Filed: 1939-09-01
Abstract: 536,216. Sulphonamido compounds. WARD, BLENKINSOP & CO., Ltd., WIESNER, B. P. H., and KATSCHER, E. Sept. 1, 1939, Nos. 25149 and 33054. [Class 2 (iii)] p - - Aminobenzenesulphonamido - pyridines, - quinolines, -isoquinolines and -thiazoles are prepared by interaction of p-aminobenzenesulphofluoride with primary or secondary amines of the pyridine, quinoline, isoquinoline or thiazole series. Tertiary amines such as dimethylaniline may be present as acid acceptors. The products include those formed by condensation of further quantities of the sulphofluoride with the first reaction product, and are useful therapeutically. Examples are given of the preparation of the p-aminobenzenesulphonyl derivatives of 2-aminopyridine and of 2-amino- 4-methylthiazole. In the case of the treatment of 2-aminopyridine, the product consists of both 2 - (p - aminobenzenesulphonyl) - aminopyridine and its p-aminobenzenesulphonyl derivative formed by substitution of the free amino group. Specifications 512,145, 517,272, 531,167 and 533,495 are referred to. The Provisional Specifications also describe the treatment of heterocyclic amino compounds or their alkali metal compounds with amino-cyclic-sulphofluorides whose amino group has been protected, the protective group being subsequently split off, and contain an additional example of the interaction of p-acetylaminobenzenesulphofluoride with α-aminopyridine and the hydrolysis of the product. Anhydrous metal halides may be present as catalysts. p- Aminobenzenesulphofluoride is obtained by reacting fluorsulphonic acid with p-aminobenzenesulphonic. acid.
Patent GB-186820-A (GB)
Title: Improvements relating to convertible passenger or goods vehicles and hoods for use thereon
IPC: B62D31/02
Filed: 1921-09-22
Abstract: 186,820. Herring, J., and Rowell, D., (trading as Herring & Rowell). Sept. 22, 1921. Seats and seat backs, arrangement and disposition of.-In a vehicle body convertible for goods or passenger carrying, seats 10 are hinged so as to swing into and be contained in a well 2 in the floor so that their undersides form part of a goods carrying platform, the seat backs 12 forming supports therefor.
Patent GB-587061-A (GB)
Title: Improvements relating to crimping or pleating
IPC: D06J1/06
Filed: 1944-12-15
Abstract: 587,061. Pleating-machines. PILLINER. B. J., and VOKES, Ltd. Dec. 15, 1944, No. 25218. [Class 141] [Also in Group XXII] In a pleating-machine of the kind described in Specification 565,518, in which means are arranged to grip each end of a length of material and then approach one another to form a pleat, there is provided a fold-initiating device in the form of a spring-controlled blade which engages the material as the gripping device closes. As shown, the front gripping device consists of bars 2, 3 and the back gripping device consists of a sliding anvil 4 and a clamping dog 5. The blade 6 has two stems 7 which pass through the bar 2 and are slidable in housings 8. The blade is controlled by compression springs 14 so that it is initially at the centre of the length of material in which the fold is to be made. As the front and back gripping devices approach one another, the blade is pushed towards the bar 2 against the spring pressure until the fold is completed and the bar 2 rises. Movable abutments 9, formed by the heads of split collets, allow the position of the stems 7 to be adjusted according to the size of the pleat to be formed.
Patent GB-1047509-A (GB)
IPC: B01D29/15
Filed: 1965-06-15
Abstract: 1,047,509. Filters. MICHIGAN-DYNAMICS Inc. June 15, 1965 [June 15, 1964], No. 25314/65. Heading B1D. In a filter comprising two concentric, cylindrical filter elements 23, 25 which enclose therebetween an annular space 26 in communication with the outlet 7, outer filter element 23 only is used until rising differential pressure caused by clogging of element 23 opens a valve 57 and lets incoming liquid into the space within inner element 25, after which the elements operate in parallel, and a warning device is actuated by a differential pressure slightly below that at which valve 57 opens, whereby on actuation of the warning the total filter life is only 60% expended. The warning device is a lamp connected in series with a switch 115, which is biased towards the closed position but is normally held open by a lever 117, engaging a rod 99 which is vertically movable with a diaphragm 85. Diaphragm 85 is exposed to inlet and outlet pressures on opposite sides and loaded by spring 95, and electrical connections are made through resin 133 in a cap 77. A further valve 143 opens at a higher pressure, should the warning be ignored and both elements clog, permitting flow direct from inlet to outlet via the central space of element 25. Elements 23, 25 comprise corrugated woven wire respectively supported on their downstream sides by coarser wire mesh elements 27, 29, all four elements being secured in annular grooves in end caps 35, 37. A baffle 53 partly shields element 23.