baber/WOPTO huggingface dataset:
Patent GB-1103610-A (GB)
Title: Improvements in or relating to optical transmission systems
IPC: H01J17/04
Filed: 1965-02-24
Abstract: 1,103,610. Light guides. WESTERN ELECTRIC CO. Inc. Feb. 24, 1965 [Feb. 25, 1964 (2)], No. 7915/65. Heading G2J. In an extended optical transmission system the optical waves are delayed to a greater extent at the centre than at the boundary of the beam path so as to effect focusing of the beam along its path. In one embodiment, Fig. 3 (not shown), a conduit is filled with glass which has a continuously decreasing refractive index from the axis to the periphery of the cylinder. Alternatively, Fig. 1 (not shown) the refractive index gradient is produced by filling the conduit (10) with a series of concentric glass cylinders (11-14) whose refractive indices decrease from the axis to the periphery. In a further form, Fig. 4 (not shown) there is a single rod (31) axially supported within an evacuated or gas-filled cylinder (30). As shown in Fig. 5 a thin sheet 41 is diametrically supported by cylinder 40 and twisted about its axis so that the effective refractive index for any ray parallel to the axis is greater the nearer the ray is to the axis of the cylinder 40. Since the presence of a dielectric material is equivalent to increasing the dimensions of the path, an optical waveguide may be provided as in Fig. 8 wherein the rectangular cross-section has its width A enlarged by about ten per cent over an interval D equal to half A. This tends to produce a greater concentration of energy in the region of the grooves so that by forming the grooves helically along the length of the conduit the beam is focused as it traverses the conduit. In a further form, Fig. 11, the beam 116 is kept focused as it passes along the gas filled conduit 110 by providing a helical heating coil 112 which, whilst producing a temperature gradient across the cross-section of conduit 110, produces a refractive index gradient thereacross. The conduit 110 may be cooled by a coil 114. In an alternative, Fig. 14 (not shown) a pair of intertwined helical heating coils are provided, according to Fig. 12 (not shown) the heating is performed by a series of spaced electrical heating elements and for bending the beam 116 around a corner an additional heating element (140) Fig. 13 (not shown) may be provided on the outside of the bend.
Patent GB-657878-A (GB)
Title: Improvements in and relating to temperature control systems
IPC: G05D23/275
Filed: 1949-03-23
Abstract: 657,878. Automatic temperature control systems. BRITISH THOMSON-HOUSTON CO., Ltd. March 23, 1949, No. 7926. Convention date, March 27, 1948. [Class 38 (iv)] In a temperature control system in which a saturable reactor controls the current to an electric heating resistor, an electric valve controlling the saturating current of the reactor is, in turn, controlled by a second electric valve, and two other electric valves render control by the second electric valve ineffective when the latter operates on non-linear portions of its characteristic. In a temperature control system, wherein the current in a heater 1 is regulated by a saturable core reactor 3 in response to the out-of-balance of a Wheatstone bridge 15, 16 controlled by a temperature sensitive device 13, the thyratron 6 which controls the reactor 3 is effectively biassed only when its control valve 9 is working on the linear portion of its characteristic curve. The output from the bridge 15, 16 at 19 controls the valve 9 to vary the charge on a condenser 7 connected to the grid of the thyratron 6. The action of the condenser 7 is opposed by that of condenser 8 which is controlled through a feed-back rectifier 10 in accordance with the heater voltages. Bias resistances 30, 31 are supplied by a rectifier 28, the resistance 31 providing a bias relatively to the voltage of condenser 7 so that the thyratron is inoperative on the lower or cut-off portion of the characteristic of valve 6. The resistor 30, together with resistor 31 also provides a voltage such that the rectifier 33 breaks down at the saturation point of valve 9. In this manner operation of the system is limited to the linear portion of the characteristic of the valve 9. Specification 407,073 is referred to.
Patent GB-1444688-A (GB)
Title: Race-calling system elec
IPC: A63K3/00
Filed: 1974-02-21
Abstract: 1444688 Race-calling system R A EDWARDS 21 Feb 1974 [12 March 1973] 7942/74 Heading G4H [Also in Division A6] A race-calling system comprises means for indicating the relative placings of the the separations between the participants at selected points during a race. As described, the indications are given, at furlong intervals throughout a horse race. Each horse is equipped with a transmitter connected to an inductive loop 68; as each horse passes inductive loops 58 at each furlong, a unique identifying frequency is passed via a transmission line 62 (or radio link) to filters 66, thence to a logic circuit 71 which controls local and remote display boards 72, 78, 84 and a printer 80. Each board indicates in dot matrix form (lamps or LED's), Fig. 1 (not shown), the horse numbers in the order in which their frequencies are received, their separations, and the current furlong number. As each filter identifies its frequency, it passes a pulse to logic circuits 70, 204, Fig. 13 (not shown) which send corresponding identifying signals to a memory (220) where they are stored in the order in which they are received before they are passed to display driver circuits (233). Length and furlong counters (234) and (301) respectively count clock pulses between successive received frequencies and the number of loops 58 which have been passed, counter (234) being coupled to logic for determining when fractions of a length (“, ¢, ¥), decimals (1À5 and above) and letters (<SP>1</SP>/ 16  = NO(se), # = H(ea)D, <SP>3</SP>/ 16  = (N(ec)K) are to be displayed. Means are provided to reset the circuit a predetermined time after the first horse has crossed a loop 58 so that stragglers do not affect the display. Examples of suitable forms of transmitter, filter 66 and inductive loop 58 are described with reference to Figs. 8, 9 and 4 (not shown), the last showing a dual loop for minimizing noise caused by atmospheric interference &c.
Patent GB-865469-A (GB)
Title: Improvements in or relating to leakage reactance transformers
Inventor: PARK KENNETH JOHN
IPC: H01F38/10
Filed: 1958-03-12
Abstract: 865,469. Transformers. GENERAL ELECTRIC CO. Ltd. Feb. 25, 1959 [March 12, 1958], No. 7950/58. Class 38 (2). The leakage reactance of the transformer, shown in Fig. 2, is adjusted to the required value by moving the laminated shunt member 5 along the limbs 1, 2 and wedging it temporarily in place and by relative movement between the primary and secondary coils 6, 7, 8, 9, along the limbs. The member 5 and the movable secondary windings are then secured in place by wax or bitumen. The primary coils 6, 7 may be connected in series or parallel or form two primaries and the secondaries may be arranged similarly. Alternatively, the windings may be connected to form an autotransformer. The core may be formed of rectangular strips arranged in any of the ways described in Specifications 857,241, 857,915 and 865,468.
Patent GB-574666-A (GB)
Title: Improvements in or relating to air heaters
IPC: C21B9/10
Filed: 1944-04-28
Abstract: 574,666. Gas turbine plant. AKT.-GES. FUR TECHNISCHE STUDIEN. April 28, 1944, No. 7995. Convention date, May 3, 1943. [Class 110 (iii)] In a closed-circuit turbine plant, using hot air, the air is heated in a heater B utilising the heat of waste gases, e.g., from a blast furnace 1. The air passing to 1 is heated in elements 4, 5 of B being delivered by a blower 6 driven by a motor M. The plant comprises a turbine 2, supplied by a heater 3, which exhausts to a heat-exchanger 7 and a cooler 8 before passing to a multi-stage compressor 9 provided with intercoolers 10. An external-power machine 11 is also driven by the turbine. Compressed air is heated in 7 before being led to the heater 3. The heaters 5, 4, are subjected to the hottest and coolest gases respectively, in the heater B. The heater 3 may be divided into two which act either in series, or in parallel. The blower 6 may be driven by the turbine or by a separate engine. Pulverized, solid, or liquid fuel may be burnt in the heater B.
Patent GB-1026976-A (GB)
Title: Improvements relating to liquid throttle valves
IPC: F16K1/226
Filed: 1963-02-28
Abstract: 1,026,976. Valves. KLEIN, SCHANZLIN & BECKER A.G. Feb. 28, 1963 [March 9, 1962], No. 8014/63. Heading F2V. In a hinged or butterfly valve having a resilient lining 4, Fig. 1 (not shown), for engagement by the valve member 3 when closed the lining is pressed into engagement with the hub 11 of the valve member surrounding the spindle 7 by cup springs 9 acting on bearings 8 which are slidable in the valve body 2. The spindle is rotated by worm-gearing 5, 6. Instead of the springs 9 hydraulic means may be employed.
Patent GB-217974-A (GB)
Title: Improvements in or relating to controlling devices for aeroplanes
IPC: B64C3/52
Filed: 1923-03-21
Abstract: 217,974. Fairey Aviation Co., Ltd., and Fairey, C. R. March 21, 1923.. Balancing and regulating altitude.-In an aeroplane having the trailing marginal portions of each half plane divided into two parts, the inner parts or flaps are connected by control cables to elements which can be set at various distances apart by screw mechanisms to enable the flaps to be moved simultaneously in the same direction, and the control cables from the outer parts or ailerons are passed over stationary guide pulleys to a manually-operated drum to enable the ailerons to be moved in opposite directions, the two controls being independent of one another. The Figure shows an arrangement similar to that described in Specification 135,520 in which the upper plane of a biplane has two ailerons B', B<2> and two flaps C<1>, C<2>, the flaps being connected bv wires or struts to flaps E', E<2> on the lower plane. The control cables for the flaps are connected to nuts K<1>, K<2> on a shaft F having a right and left-hand screw adapted to be turned by a hand-wheel J. The cables from the ailerons B<1>, B<2> are passed over stationary pulleys l<3>, l<4>, l<3*>, l<4*>, to a drum L turned by a hand-wheel N.
Patent GB-650449-A (GB)
Title: Improvements in and relating to control systems of the correspondence kind for movable members
IPC: G05D3/14
Filed: 1948-03-18
Abstract: 650,449. Electric control systems. TUSTIN, A., SIMMONS, J. D., LIVERSIDGE, J. H., WRATHALL, R. W., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. March 18, 1948, No. 8115. [Class 38 (iv)] [Also in Group XXXVIII] In an electric correspondence control system, such as that for the gyroscopic stabilization of a gun, divided velocity resetting is provided by comparing at 28 the output voltage of a tachometer generator 17 on the gun and a voltage obtained from the servomotor 1, there being included in the control circuit a capacitance 29 having a low reactance at frequencies at which back-lash or resilience tend to introduce instability. A.C. signals from gyro and manual controls are applied through a transformer and phase discriminator to the amplifier 5, which controls the servomotor 1 through a metadyne 2. The voltage across resistance 24 is proportional to the velocity of the motor 1 and the potentiometer 25 is adjustable to provide a positive feed-back through a resistance 40 when noback-lash exists. Specifications 580,005, 592,208, [Group XXXVIII], and 611,046 are referred to.
Patent GB-1418137-A (GB)
Title: Process for the preparation of alpha-6-deoxytetracyclines
IPC: C07C233/00
Filed: 1973-02-19
Abstract: 1418137 Preparing tetracycline compounds ANKERFARM SpA 19 Feb 1973 [24 Feb 1972] 8119/73 Heading C2C Alpha-6-deoxy-tetracyclines of Formula (II) wherein Y is hydrogen, fluorine, chlorine, bromine or iodine, and R is hydrogen, hydroxyl or a group: -O-CO-R<SP>1</SP> in which R<SP>1</SP> is C 1-6  alkyl are prepared by hydrogenating a 6-demethyl - 6 - deoxy - 6 - methylene - tetracycline of Formula (I): wherein Y and R are as defined above, at a hydrogen pressure of 1 to 150 kg./cm.<SP>2</SP> for 1-8 hours at 15 to 80 C. in a polar solvent, in the present of, as catalyst, a solution in said solvent of a complex of a ligand which is a tertiary organic phosphine, arsine or stibine with a metal which is rhodium, palladium, ruthenium, osmium, iridium, platinum or nickel, said complex containing halogen bound directly to the metal. Suitable ligands are triphenylphosphine, tributylphosphine, triethylphosphine, diethylphenylphosphine, diphenylethylphosphine, alkylphosphoric esters, triphenylstibine and triphenylarsine. The preferred metal is rhodium, the catalyst being prepared by reacting rhodium chloride with the ligand in the reaction medium. Polar solvents used are C 1-4  mono- or polyhydric alcohols, N,N<SP>1</SP>-dimethylformamide, N,N<SP>1</SP>-dimethylacetamide, dioxan, tetrahydrofuran, methoxyethanol, ethoxyethanol, acetonitrile or pyridine.
Patent GB-609547-A (GB)
Title: Improvements in furniture construction
IPC: F16B12/04
Filed: 1946-03-15
Abstract: 609,547. Furniture frames and joints. SAVAGE, H. W. and LEITHEAD, J. W. March 15, 1946, No. 8135. [Class 52(ii)] Furniture such as sideboards, dressers, &c. constructed in parts which may be packed and transported in " knock-down " form comprises horizontal frames such as at the top and bottom of the part of the sideboard &c. to be closed by drawers or doors and the corner posts formed with angled cuts in the inward corners into which cuts the frames correspondingly angled fit snugly, shoulders also abutting the posts, the frames and posts being rigidly secured by nails &c. driven through the frames into the posts. The posts are formed with diagonal cuts C at the top and at suitable distances from the top in accordance with the depth of drawers, doors, &c. The horizontal frames comprise front and back rails D having angled cuts G and shoulders F, H to fit and bear on corner posts and end panels L and cross bearers O provided with tenons N engaging in rabbets M in the rails. The corner posts A are also provided with a rabbet I for the tenon K of the end panels L. The frames are secured to the corner posts when assembled by driving a screw or nail diagonally through the rail and bearer and into 'the corner post.
Patent GB-1505804-A (GB)
Title: Method and apparatus for measuring air pressure in pneumatic tyres
IPC: G01L17/00
Filed: 1976-03-02
Abstract: 1505804 Measuring tyre pressures electrically CONSOLIDATED FREIGHTWAYS Inc 2 March 1976 08302/76 Heading G1N The pressure inside a pneumatic tyre 22, Fig. 3, is monitored by a transducer 20 located internally, comprising a coil on a toroidal, magnetostrictive core forming part of the tuning circuit of an oscillator which receives its power and transmits the measuring signal by inductive couplings. The power supply is derived from an RF oscillator contained in a box 34, Fig. 2, connected to a primary transmitting antenna 36 consisting of a flat coil in the roadway. The RF field produced is picked up by receiving antenna 38 forming part of the pressure sensor unit 21, and rectified to provide power for an oscillator whose frequency is determined by the inductance of element 20, which is varied by the internal tyre pressure acting through a diaphragm 70 on the toroidal core. The electronic components are formed on a semi-conductor wafer surrounded by antenna 38. The measuring signal is fed to secondary transmitting antenna 26 and picked up by receiving antenna 28 consisting of a second flat coil in the roadway, with its axis at 90 degrees to that of antenna 36. After passing through filters the measuring signal is fed to display devices 32. The pressure sensor unit 21 may be bonded to the inner wall of tyre 22, as shown in Fig. 3, embedded in the tyre casing Fig. 8 (not shown), incorporated into a repair plug inserted into the tyre side wall Fig. 7 (not shown), or formed as a freely rotatable sphere inside the tyre Fig. 9 (not shown). The antennae 28, 36 may be segmented and duplicated laterally to facilitate distinguishing between signals from multiple wheel assemblies, and each tyre may produce a coded identification signal. Power for the sensor unit 21 may alternatively be derived from the EMF induced in receiving antenna 38 during rotation as it cuts the flux of a magnet attached to the vehicle, especially for use with radial tyres with metal belts. The receiving antenna 28 may also be attached to the vehicle, and the signals from each tyre may be fed sequentially to display devices 32.
Patent GB-792392-A (GB)
Title: Improvements in or relating to x-ray apparatus with weight compensation
IPC: A61B6/00
Filed: 1956-03-16
Abstract: 792.392. X-ray apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 16, 1956 [March 19, 19551. No. 8319/56. Class 98(1) [Also in .Group XXXII] In X-ray apparatus with weight-compensation of parts movable along a tiltable table by a spring or springs, the weightcompensation is adjusted to the value required for any angle of tilt by a lever system with a member movable therealong in accordance with the angle of tilt, and a cable which is attached to the moveable member, passes over a pulley, and is connected to a spring fixed to the table. As shown, a table 10 is tiltable about an axis AB, and a carriage 11 for e.g. an X-ray tube and a fluorescent screen is slidable in U-sectioned guideways 10a on opposite sides of the table. Carriage 11 is connected by a rack 12 and gearing 13 to a lever arm 14, the gearing being such that during movement of the carriage arm 14 rotates through a small angle. A sleeve 5 is caused to slide on lever 14, by 'means not shown, so that its distance from the axis CD about which the lever pivots depends on the angle which the table 10 makes with the horizontal. Sleeve 5 is connected to a cable 3 which passes over a pulley 4 and is connected to a spring 1 anchored to the table 10. The weight-compensation is arranged to vary from zero when the table is horizontal to a maximum when the table is vertical. The sleeve 5 may threadably engage a rod driven by an electric motor which is operated when the table is tilted to move the sleeve in correspondence with the angle of tilt.
Patent GB-749739-A (GB)
Title: Improvements in or relating to surgical dressings
IPC: C08F20/62
Filed: 1954-03-23
Abstract: A thin, tough, water-insoluble, water vapour-permeable sheet suitable for use as a surgical dressing is made from a copolymer of at least one member of the group consisting of acrylic acid, methacrylic acid and acrylamide with at least one member of the group consisting of esters of acrylic or methacrylic acid with alcohols containing 2 to 12 carbon atoms, such as ethyl, n-butyl, n-hexyl, octyl, 2-ethylhexyl and lauryl alcohols, the total acid or amide component constituting 70 to 35 mol. per cent of the copolymer, the total ester component constituting 30 to 65 mol. per cent of the copolymer, and any methacrylic components not constituting more than 40 mol. per cent. The copolymers may be prepared by the following methods (1) by copolymerizing the monomers in solution in methanol in the presence of benzoyl peroxide as a catalyst, and optionally in the presence of a chain terminating agent such as a mercaptan or aldehyde, the copolymer solution produced may be purified by precipitation with a petroleum fraction followed by solution in methanol or ethanol and reprecipitation with water; (2) by partial esterification of polymerized acid; and (3) by partial saponification of an ester polymer.ALSO:A surgical dressing comprising a thin tough sheet is made from a copolymer of at least one member of the group consisting of acrylic acid, methacrylic acid, and acrylamide, with at least one member of the group consisting of esters of acrylic or methacrylic acid with alcohols containing 2 to 12 carbon atoms, the total acid or amide component constituting 70 to 35 mol per cent of the copolymer, the total ester component constituting 30 to 65 mol per cent of the copolymer, and any methacrylic components not constituting more than 40 mol per cent, the sheet being water-vapour permeable but insoluble in water, so that adhered directly to skin areas surrounding a wound it can be washed with adjacent areas of the skin without undue risk of deterioration, and will protect the wound from contamination but yet allow passage of air and water vapour to and from the area which it covers.  The dressings are applied by the treatment of the skin with a solvent for the copolymer.  The dressings may be used in combination with antiseptic and bactericidal agents, for example a thin deposit of silver may be applied to the surface of the sheet which is in contact with the wound.
Patent GB-251248-A (GB)
Title: Improvements in or in connection with centrifugal compressors
IPC: F04D29/30
Filed: 1926-03-30
Abstract: 251,248. Akt.-Ges. Brown, Boveri, et Cie. April 23, 1925, [Convention date]. Impeller blades; discsupported-blade pumps; materials used in construction.-In a centrifugal compressor the blading consists of a plurality of independent elements 1 - - 6 riveted on each side of the wheel discs. The blades are made of light metal, such a.s duralumin, silumin, &c., by die casting, stamping, or forging. Each element may have hollows or recesses 8 - - 10 to reduce weight, and may have integral rivets 7. The blade may be rectangular in cross-section, or may be shaped as a body of uniform strength as shown in Fig. 6. The blades may be made of different widths for the different wheels of a multi-stage compressor.
Patent GB-105158-A (GB)
Title: Improved Device for Advertising and like purposes.
Inventor: CURNOW HERBERT HENRY
IPC: G09F7/02
Filed: 1916-06-19
Abstract: 105,158. Curnow, H. H. June 19, 1916 Loose-letter or like signs and notice-boards. -An advertising or display board b has its back a formed of corrugated material, for example card, for removably supporting letter or like members c, also furnished with corrugations or their equivalent. Figs. 3, 4, and 5 showletter-bearing members of three forms, that shown in Fig. 5 having the letter directly marked on a spring the top and bottom of which are curved to fit the corrugations in the back a.
Patent GB-1219794-A (GB)
Title: An hydraulic forging press
IPC: B30B15/04
Filed: 1968-02-22
Abstract: 1,219,794. Forging presses. HYDRAULIK G.m.b.H. 22 Feb., 1968 [24 Nov., 1967], No. 8699/68. Heading B3H. An hydraulic drop forging press has upper and lower laminated cross-heads 3, 4 interleaved at their ends with tie bars 1, each formed of parallel plates enclosed in a casing 5. The tie bars are connected to the cross-heads 3, 4 by welding or preferably by bolts 2. Guideways 17 are provided on the casings 5 for the press ram 9 which is actuated by one or by three hydraulic plungers 13 working in cylinders 14 fitted with stuffing-box packing 19. The casings 5 may be each in two parts welded together. Wedge assemblies 6 are used to pre-tension the tie bars 1. Cross-heads 3, 4 are laminated from rolled or cast steel plates.