baber/WOPTO huggingface dataset:
Patent GB-628916-A (GB)
Title: Improvements relating to radio antennae coupling arrangements
IPC: H03H7/46
Filed: 1946-06-24
Abstract: 628,916. Aerial coupling arrangements. COSSOR, Ltd., A. C., and BELL, D. A. June 24, 1946, No. 18928. [Class 40 (v)] The invention relates to the coupling arrangement used between an antenna and its associated radio apparatus, whereby the antenna may be used for the reception of different frequency bands such as those of television and the normal broadcast frequencies. For television frequencies, the aerial is matched with and directly coupled to the feeder, and for normal broadcast frequencies, the upper limb of the dipole aerial or another rod is used as a rod aerial which is coupled to the feeder through a cathode follower valve. In Fig. I, the upper limb UL of a dipole aerial is connected through a series acceptor circuit CH1, C1 to lead 2 of the feeder cable, and the lower limb LL is directly coupled to lead 1 ; this constitutes direct coupling between aerial and feeder for television frequencies, the output being applied through transformer T to a television receiver. In order to receive the lower broadcast frequencies, the upper limb UL functions as a rod aerial and is connected through cathode follower valve V to lead 1 of the feeder, so that the aerial and feeder impedances may be matched at these frequencies. The output between lead 1 and the conducting screen CA is applied to a multiband broadcast receiver BR. The filament supply of valve V is supplied through the screen conductor CA and lead 1 of the cable, and the H.T. supply through the screen and lead 2. The whole mast-head circuit is surrounded by an earthed casing B. A modification is described in which a coaxial cable is used in place of the screened twinfeeder. In this case the inner conductor is used to supply the H.T. voltage, and an auxiliary lead is used for the positive filament supply.
Patent GB-882594-A (GB)
Title: Improvements in or relating to microwave waveguide devices
Inventor: WALDRON RICHARD ARTHUR
IPC: H01P1/17
Filed: 1959-06-03
Abstract: 882,594. Waveguide Faraday rotators. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Sept. 8, 1959 [June 3, 1959], No. 18961/59. Class 40(8). In the Faraday rotator shown it is found that the ratio of the radius of the ferrite core 1 to the internal radius of the guide 2 may be optimized to produce a specific rotation which is independent of frequency over a useful . working band. The term "specific rotation" is defined as the Faraday rotation per unit length of the device where the unit of length is the wavelength (# o ) in an unbounded quantity of whatever material (e.g. air or solid dielectric 3) surrounds the core. The value of the radius ratio is chosen to give the required result at the working frequency for a given normalized guide radius a/ #o . The specification shows sets of curves connecting specific rotation with radius ratio for different values of <SP>a</SP>/# o .
Patent GB-283799-A (GB)
Title: Improvements in spark-producing toys
IPC: A63H33/36
Filed: 1927-07-18
Abstract: 283,799. Arnold, C. July 18, 1927. Spark-producing toys. -In a spark-producing toy, the rotary disc i of the spark-producing mechanism is apertured in known manner, and is provided with a number of upwardly directed projections on which rest a number of freely movable discs m of coloured, transparent material. The movements of the discs m are braked by contact with the inner wall of the casing f so that the spark-brushes viewed through windows n, in the lid o of the casing, rapidly change in colour.
Patent GB-624955-A (GB)
Title: A new aluminium base alloy
IPC: C22C21/10
Filed: 1947-07-17
Abstract: The range of proportions of zinc in the alloy claimed in the parent Specification is modified to give an alloy of the following composition: Zn 6.51-9.00 per cent, Mg 1.50-4.50 per cent, Si 0.01-1.00 per cent, Fe 0.01-0.60 per cent, Mn 0.01-4.00 per cent, Ni 2.01-5.00 per cent, Cu 0.0-0.19 per cent, Al the remainder. The alloy may contain one or more of Ti, Nb, B, V, Zr, and Ce not exceeding a total of 0.70 per cent.  The alloy may contain one or more of Sb, Sn and Ca up to 1.75 per cent in total and individually not exceeding 1.5 per cent.  The alloy may contain one or more of Be, Co, Cr, W, Mo, Ag, Li, Ta, Te, Th, Tl, up to 1.50 per cent in total and individually not exceeding 0.75 per cent.  One or more of Pb, Bi, Cd, As, P, Na and Ba may also be present not exceeding a total of 1.0 per cent, Pb being absent when Si and Fe are each present in amounts of 0.40 per cent or over.  The alloy may be subjected to a solution-treatment, e.g. at 450-530 DEG C. up to about 24 hours, quenched and either naturally aged or artificially aged, e.g. at 100-150 DEG C. for from half an hour to twenty-four hours, afterwards cooling in air.
Patent GB-663123-A (GB)
Title: Improvements in and relating to electric motor operated timer control systems
IPC: G05B19/02
Filed: 1949-07-21
Abstract: 663,123. Control of motors; controllers. BRITISH THOMSON-HOUSTON CO., Ltd. July 21, 1949. [July 23, 1948] No. 19241/49. Class 38 (iii). An electric timer motor 18 for an automatic clothes washing machine or the like is controlled by means of a two-position switch 22 which is actuated by a cam 27 driven by the timer motor. The switch is shunted by resistor 28 so that a limited voltage may be applied to the timer motor to maintain it in operation when the switch is in the open position. For washing operation the machine-driving motor 1 is energised through contacts 3, the timer motor being supplied through contacts 3, 21, For drying operation the circuit of the motor 1 is completed through contacts 7 and camoperated contacts 9, the timer motor being energized through contacts 24. The contacts 3 and 7 are controlled by an overflow cup 13 which is held during the washing operation. Due to the difficulty in obtaining exact simultaneous operation of the switches, the switch 22 is made to operate in advance of the switch 9 when changing from washing to drying operation. If the switch 22 should tend to remain in the intermediate position during the change-over, the timer motor is prevented from stopping since its supply circuit is made through resistor 28 to effect complete operation of switch 22 and to ensure continuous operation of the machine. The timer motor is also supplied through resistor 28 to ensure that it operates when the contacts 21 fail to close immediately at the commencement of the washing operation. In a modification, Fig. 2 (not shown); the machine-driving motor is controlled by a float switch, the timer motor driving an additional cam actuating contacts in series with this switch. Specifications 636,039 and 620.210, [Group VIII], are referred to.
Patent GB-712727-A (GB)
Title: Improvements in or relating to ventless delay electric initiators
Inventor: CHAPLIN COLIN ANDREW
IPC: C06B21/00
Filed: 1952-08-01
Abstract: 712,727. Electric blasting fuzes; pyrotechnic compositions; explosive materials. IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 22, 1953 [Aug. 1, 1952], No. 19532/52. Classes 9(1) and 9(2) The fusehead of a ventless delay electric detonator is made by dipping the bridge wire into a suspension of 90 parts (by weight) lead mononitroresorcinate and 10 parts of potassium chlorate in a 7.5 per cent solution of nitrocellulose in a mixture of n-amyl acetate and n-amyl alcohol. The bead thus formed on the bridge wire is dried, re-dipped into said composition, re-dried and then dipped into a suspension of a cerium-magnesium alloy, lead dioxide, charcoal and aluminium powder in a 2.5 per cent solution of nitrocellulose in a mixture of n-amyl acetate and n-amyl alcohol. The bead is then coated by dipping consecutively into a 5 per cent solution of nitrocellulose in a mixture of diethyl ether and ethyl alcohol, a 10 per cent solution of ethyl cellulose in a mixture of diethyl ether and ethyl alcohol, and a 8 per cent solution of ethyl cellulose in a mixture of n-amyl acetate and n-amyl alcohol with intermediate dryings. In a modification, the first coating is formed by dipping the bead into a 10 per cent solution of ethyl cellulose in a mixture of diethyl ether and ethyl alcohol.
Patent GB-1018468-A (GB)
Title: Improvements in or relating to electrical supply circuit arrangements
IPC: H02M7/48
Filed: 1964-05-11
Abstract: 1,018,468. Discharge lamp circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. May 11, 1964 [May 14, 1963], No. 19540/64. Headings H2F and H2H. A semi-conductor inverter feeding a load 13, 14 having an inherent time delay has, connected across the A.C. output, an iron-cored choke 15 either self-saturating at a determined voltage or of the D.C. saturated type to reduce the voltage across semi-conductor elements 8, 9 before the load draws current. When saturated the choke 15 has an impedance substantially equal to the load rising to a multiple of the load impedance when de-saturated. A circuit providing D.C. saturation is given in the Specification.
Patent GB-990347-A (GB)
Title: Improvements in or relating to a sound attenuating gas pipe
Inventor: LUDLOW EDMUND
IPC: F01N1/02
Filed: 1963-05-16
Abstract: 990,347. Exhaust or intake silencers. ARVIN INDUSTRIES Inc. May 16, 1963, No. 19578/63. Heading F1B. An exhaust or intake silencer comprises an inner pipe 14, Fig. 2, supported within an outer pipe 10 by depressions 16 which form a plurality of resonater chambers 18 connected to the main flow passage by elongated throats 23. In Figs. 2 and 3 each throat is formed by annular beads on the inner pipe closed by a ring 22 and provided with openings 24, 25, leading to the main flow pipe and the resonater chamber respectively. The effective length of the throat may be adjusted by rotation of the ring 22 to tune the resonator chamber to different frequencies. In a modification the annular throat is formed by an insert in the inner pipe. In Fig. 4 the throat is formed by an axial bead 39 in the inner pipe covered by a plate 38 and having openings 40, 41, at opposite ends; several variations of this form are described. In Fig. 15 the outer member is formed by a part cylindrical shell 116 forming the resonator chamber 120; alternatively it may be formed by a cylindrical member arranged eccentrically to the inner pipe. In Figs. 19, 20, the throat 156 is formed between a straight bead 154 surrounded by a C-shaped bead 156 formed in the outer pipe and extending into contact with the inner pipe; in modifications of this form the throat is formed by a U-shaped or continuous, oval-shaped bead.
Patent GB-418927-A (GB)
Title: Magneto electric machines especially for internal combustion engines
IPC: H02K16/00
Filed: 1933-07-11
Abstract: 418,927. Magnetos. BOHLI, J., 15, Dammstrasse, and STEINER, G., 6, Scherestrasse, both in Solothurn, Switzerland. July 11, 1933, No. 19601. Addition to 413,716. [Class 35.] A set of magnetos, each as claimed in the parent Specification is mounted on a common support and driven by a common shaft, each magneto having its own circuit breaker. As shown, the magnets f, g are driven from the main shaft b by gears c, d, e and a shaft k is coupled to shaft b and carries a cam l to actuate two interrupters and a distributer n having two electrodes o, p connected respectively to coils i, h through cables s, t and brushes r, q. As an alternative, each unit may have its own cam and distributer driven from the magnet shaft or by additional intermediate members driven by the shaft b, whilst, as a further alternative, the breakers or distributer members or both may be separately arranged and driven by the engine.
Patent GB-1035264-A (GB)
Title: Improvements in mixing machines
Inventor: REILLY RONALD HENRY
IPC: B01F7/18
Filed: 1964-05-12
Abstract: 1,035,264. Continuous mixing appliances. DUST SUPPRESSION Ltd. May 3,1965 [May 12, 1964], No. 19621/64. Heading B1C. Apparatus for wetting a particulate solid (e.g. dust) has a housing with a frusto-conical lower portion 12 traversed by (as described, three) vertical scraper bars 30. The solid is introduced at 13, distributed by the deflector cone 14 within a cylindrical baffle 22, and wetted by inwardly and outwardly directed sprays 18, 20. The scrapers are attached top and bottom to rotating rings, and may have exchangeable wearing surfaces. The deflector cone 14 may have a serrated or sinuous edge or be replaced by a flat disc. There may be means for metering the solid and/or liquid materials which may be actuated by a signal indicating a physical property of the mixture.
Patent GB-358499-A (GB)
Title: Improvements in or relating to display devices
IPC: G09F11/29
Filed: 1930-06-27
Abstract: 358,499. Window blinds. BERNET, U. DIEM-, Speicher, Switzerland. June 27, 1930, No. 19634. Convention date, July 1, 1929. Drawings to Specification. [Class 52 (v).] A display strip made of thin fibreless transparent non-inflammable cellulose forms part of a vehicle window blind. The Specification as open to inspection under Sect. 91 (3) (a) comprises the attachment of a strip to a roller by forming the latter of two nesting tubes each having a longitudinal slot through which the strip end is inserted while they are in register, the tubes being subsequently rotated relatively to one another. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 154,902 and 178,942, [both in Class 98 (ii), Photographic processes &c.].
Patent GB-1071337-A (GB)
Title: Improvements in or relating to the manufacture of gramophone records
Inventor: CHEESEMAN HARRY
IPC: B29C45/26
Filed: 1964-05-12
Abstract: 1,071,337. Injection moulding gramophone records. DECCA Ltd. Feb. 12, 1965 [May 12, 1964], No. 19706/64. Heading B5A. A jet of ionized air is directed on to an injection moulded gramophone record 14 when the mould 10, 12 is opened so as to discharge any static charges on the disc. This ensures that the record falls away freely and is not attracted electrostatically on to one of the die plates. The jet of ionized air is supplied through a nozzle 21 under the control of a valve 17 and timing device 26 to operate in synchronism with the mould opening device and before retractable ejector pins 15 are withdrawn.
Patent GB-1510520-A (GB)
Title: Surveillance systems
IPC: G08B26/00
Filed: 1975-11-25
Abstract: 1510520 Selective signalling SAAB-SCANIA AB 25 Nov 1975 [26 Nov 1974] 19772/76 Divided out of 1510518 Heading G4H In a surveillance system, each of a plurality of terminal units has an automatic dial-up unit for establishing communication via the telephone network with a central unit (a) to send it information on changes of status in sensors connected to the terminal unit and (b) at a point in time determined by the contents of a register for checking purposes, there being means for loading the register after each establishment of communication to determine a new point in time. Communication of type (a) occurs on detection of changes in status, the terminal unit address and sensor status information being sent to the central unit, which sends a reply back, e.g. to give an alarm. The register, which is loaded in response to communications of both types, may be compared with a clockdriven counter (reset when the register is loaded) to actuate the dial-up unit on equality, or may itself be a counter driven by clock pulses to zero after being loaded, zero count actuating the dial-up unit. The value loaded into the register may come from the central unit, or may come from a random number generator subject to a maximum time either supplied from the central unit or obtained by decoding a clock-driven counter. The central unit gives an alarm centrally if communication does not occur by a certain time.
Patent GB-228211-A (GB)
Title: Improvements in or relating to duplex telegraphy
IPC: H04L5/14
Filed: 1923-08-02
Abstract: 228,211. Western Electric Co., Ltd., (Western Electric Co., Inc.). Aug. 2, 1923. Duplex telegraphs.-Ina duplex system provided with a balancing network at each end of the line, each receiver is adapted to be automaticallv disconnected from the line and adjacent network during that portion only of each signal impulse from the transmitter at the same station when the major part of the unbalance current is produced. Fig. 2 shows the shape of an unbalance current during a transmitting interval AE, the receiver being disconnected during the interval AC of the large unbalance impulse ABC. Perforated-strip transmitters.-Fig. 1 shows a duplex bridge arrangement with a transmitter comprising a strip 15 with elongated perforations bearing on and moving with a rotary conducting drum 14, the perforations being engaged by brushes 17, 18, and the drum being earthed by a brush 16. The receiver 13 is connected through a relay 11 to an amplifying network 10 which is connected across the bridge through brushes 25, 26 moving over conducting segments 27 on a non- conducting extension 28 of the drum 14. The segments. 27 are shorter than the perforations in the tape 15 and are so positioned as to disconnect the receiver during the initial portion of each transmitted signal. Distributor systems; type-printing telegraphs. -In a modification applicable for type-printing, a synchronized rotary distributor is provided at each station, the receiving segments being shorter than the transmitting segments and the receiving collector ring and receiving segment being connected across the duplex bridge similarly to the brushes 25, 26. A third ring of segments cooperates with a third collector ring connected to one contact of the relay 11 to supply current to the magnets of the pointer.
Patent GB-1422766-A (GB)
Title: Processing for high permeability silicon steel
IPC: C21D8/12
Filed: 1974-05-06
Abstract: 1422766 Heat-treating silicon steel ALLEGHENY LUDLAM INDUSTRIES Inc 6 May 1974 [7 May 1973] 19805/74 Heading C7A The steel contains in percentage by wt. and is hot-rolled, optionally annealed at # 1700F, cold-rolled in one or more stages with any intermediate anneals being at # 1700F, annealed at 1400-1700F for 15 seconds to 2 hours preferably with cooling rate equivalent to that in still air before the final cold rolling which involves a reduction of at least 80%, decarburized and finally annealed to produce a cube -on-edge texture yielding a permeability of at least 1850 G/oe at 10 oe.
Patent GB-638860-A (GB)
Title: Improvements in or relating to apparatus for the playing of table games
IPC: A63F7/24
Filed: 1948-07-24
Abstract: 638,860. Table games ; balancing toys. KEELING, W. L. July 24, 1948, No. 19831. [Classes 132 (ii) and 132 (iii)] A playing piece of the kind used, e.g. in table football and adapted to remain upright during use has the domed base b provided on its upper surface with a disc c of a larger diameter than the base, so that when the playing piece assumes a horizontal position the periphery of the disc will contact the playing surface and ensure that the piece regains its upright position. The lead base is domed on the underside and has a small flat b<SP>1</SP> and a groove b<SP>2</SP> to receive the lower edge of a cardboard, &c. figure a, and the disc c has a central slot and is held in place by shoulders a<SP>2</SP> on the figure. The disc may be of elastic material, and the figure may have portions a<SP>3</SP> extending as far as the edge of the disc.
Patent GB-1382278-A (GB)
Title: Treatment of terephthalic acid reaction products
IPC: C08G63/78
Filed: 1972-04-28
Abstract: 1382278 Carboxylate esters of (#-hydroxyethyl) terephthalate HALCON INTERNATIONAL Inc 28 April 1972 [30 April 1971] 19870/72 Heading C2C A process for improving a polyester precursor material comprising (C 1 -C 4 ) carboxylate esters of (#-hydroxyethyl)terephthalate or a hydrolyzed derivative thereof containing deleterious amounts of colour-producing impurities comprising 4-carboxy benzaldehyde and other compounds normally associated with terephthalic acid produced by catalytic oxidation, and their ester derivatives, comprises treating a body of said precursor material with at least one of an oxidizing agent and a reducing agent. Also, a process for producing the said carboxylate esters of (#-hydroxyethyl)terephthalate comprises (1) reacting (C 1 -C 4 ) carboxylate esters of ethylene glycol with terephthalic acid in an acidolysis zone to form a reaction mixture comprising the required product, (2) removing the resultant reaction mixture from said acidolysis zone, (3) separating the required product from the reaction mixture by volatilizing the required product away from less volatile materials, (4) recovering the required product, and (5) after step (1) treating the required product present in one of the preceding steps with at least one of an oxidizing agent and a reducing agent. When molecular hydrogen is used as reducing agent step (5) may also be effected at the same time as step (1). The above process may include the step of hydrolyzing the (C 1 -C 4 ) carboxylate ester of (#-hydroxyethyl) terephthalate to hydrolysis before step (3) and carrying out step (5) on the ester or the product of the hydrolysis. Examples illustrate the preparation of pure bis-(#-acetoxyethyl)-terephthalate and its hydrolysis product.
Patent GB-441062-A (GB)
Title: Improvements in or relating to phase changing arrangements
IPC: H02K47/30
Filed: 1934-07-06
Abstract: 441,062. Phase changing. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and MAGGS, A. H., 14, Oval Road, Rugby. July 6, 1934, No. 19894. [Class 38 (ii)] In a Ferraris - Arno system a capacitor motor is used as the pilot motor. In a modification, in addition to the condenser 6 connected between one side of the single phase supply and the third phase winding 5 of the motor, an inductance 8 is connected between the winding 5 and the other side of the single phase supply. Reference has been directed by the Comptroller to U.S.A. Specification 1,953,941.