baber/WOPTO huggingface dataset:
Patent GB-244098-A (GB)
Title: Improvements in and relating to electric switches
IPC: H01H3/02
Filed: 1925-12-02
Abstract: 244,098. British Thomson-Houston Co., Ltd., (Assignees of Tritle, J. F.). Dec. 6, 1924, [Convention date]. Automatic circuit - breakers. - Loose-handle circuit-breakers in which both co-operating contacts are independently movable have one contact 11 formed on a member slotted at 16, 17 and mounted on fixed pins 14, 15 to have a longitudinal and sliding movement and the other contact 10 carried by an arm 12 pivoted at 13. The arm 12 also carries an armature 19 arranged to be held in the closed position by an electromagnet 20 which has an air gap in which is disposed a current-carrying bar 22 arranged on overload to divert the flux from the armature 19 so that the arm 12 may be moved to the " off " position by a spring S. For closing the contacts a bell-crank lever 23 is provided which may be operated manually by a handle 24 or electromagnetically by a coil 25 controlled by a push-button 26. The lever 23 carries an insulating bar 27 which engages the contact 11 during the first movement from the " off " position shown in Fig. 1, so moving it against a spring 18 until the intermediate position (Fig. 2) is reached when the arm 12 is held by the energized electromagnet 20. If now the arm 23 is returned, the spring 18 moves the contact 11 into engagement with the contact 10 with a wiping movement so completing the circuit (Fig. 3) and the circuitbreaker may be automatically opened immediately if abnormal conditions are present. In opening, as the contact 10 is made as light as possible and the contact 11 possesses a relatively greater inertia, a very quick interruption of the circuit takes place. Specifications 125,279 and 187,993 are referred to.
Patent GB-1517553-A (GB)
Title: Cooling tower
IPC: F28C1/14
Filed: 1975-07-21
Abstract: 1517553 Cooling towers GEA KUHLTURMBAU UND SYSTEMTECHNIK GmbH and HAMON SOBELCO SA 21 July 1975 [26 July 1974] 30496/75 Headings F4K and F4S In a wet or dry cooling tower having a generally upright hyperboloid shell 1, a ring- shaped structure 6 is provided inside the shell at the head (i.e. air outlet) of the tower, and provides at said outlet a local reduction in cross-sectional area (e.g. not exceeding 30%) calculated wholly or partly to prevent the entry of external air or of downdraught eddies and vortices into the tower. In Fig. 2, the ring shaped structure 6 comprises a trough 7, dimensions y and y<SP>1</SP> 8  being alternative widths. The inner upright wall 8 of the trough may extend upwardly beyond the tower shell. The structure 6 may alternatively be a ring of an acute-angled cross-section providing a surface extending inwards and upwards at the top of the shell.
Patent GB-188662-A (GB)
Title: Process for the production of stable compounds of calcium hypochlorite
IPC: C01B11/06
Filed: 1922-11-08
Abstract: The process of the parent Specification for the production of basic calcium hypochlorites suitable for bleaching purposes by the chlorination of calcium hydrate in water is so controlled that mixtures of these in definite proportions are produced.  The chlorination is terminated at predetermined points while the concentration of bleaching chlorine in the mother-liquor decreases after having attained a maximum value, and in this way mixtures of the dibasic and monobasic hypochlorites or of the monobasic compound with neutral hypochlorite may be obtained.ALSO:In the process of the parent Specification for the production of basic calcium hypochlorites by the chlorination of calcium hydrate in water, the chlorination is so controlled that definite uniform basic hypochlorites or mixtures of these in definite proportions are produced.  The chlorination is allowed to proceed at a temperature of 35-45 DEG  C., with precipitation of basic hypochlorite, until the concentration of bleaching chlorine in the mother-liquor has attained a minimum value and begin to increase, when it is found that the precipitate consists of the dibasic hypochlorite.  On further chlorination the percentage of bleaching chlorine in the mother-liquor continues to increase, and then falls to another minimum value, at which point the solid precipitate present consists almost entirely of the monobasic compound.  By terminating the chlorination at corresponding points where the concentration of bleaching chlorine in the mother-liquor decreases, mixtures of these two compounds in definite proportions or of the monobasic compound with neutral hypochlorite may be obtained.
Patent GB-618023-A (GB)
Title: Improvements relating to containers provided with an associated dispensing brush
IPC: B65D35/36
Filed: 1946-10-15
Abstract: 618,023. Collapsable tubes. HENRIC, G. Oct. 15, 1946, No. 30657. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 15, 1946.] [Class 66] A collapsable tube 5 of metal &c., after removal of a plug, has a brush 3, which is mounted in a screw-threaded socket 1, screwed into the neck 4, a portion of the socket 1 being left protruding to receive a cover 6 with an enlarged head 9 allowing the tube 5 to be stood vertically on the head 9. The cap 6 has a central rod 7 which closes the delivery opening 2 of the tube 5. A key A, and gradations 12 on the tube 5 facilitate delivery of of desired quantities of gum &c. to be spread by the brush 3 which may be of hollow circular, square, or rectangular section, and may be of vegetable or animal material, glass or rubber.
Patent GB-943688-A (GB)
Title: Improvements in and relating to the frequency control of a.c. generators
Inventor: NAMUR PAUL
IPC: H02P9/42
Filed: 1960-09-06
Abstract: 943,688. Automatic speed control. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. Sept. 6, 1960, No. 30713/60. Heading G3R. The speed of an A.C. generator 3 is controlled for constant frequency output by a differential gear 2 combining the speed of a main synchronous motor 1 with that of an auxiliary motor 8 which is controlled in accordance with speed-deviations of the generator from a reference value. A comparator 6 receives voltages from a tachometer generator 5 and a reference source 12, and, if the phase relationships between these voltages vary from a predetermined value, a D.C. error signal is supplied to motor 8 through amplifier 7. The magnitude of the error signal is a measure of the phase deviation and its polarity indicates the sense of the deviation. The correct phase relationship is maintained for any load condition if the auxiliary drive is controlled to eliminate the error signal, coarser regulation being provided if the phase deviation exceeds a predetermined value. When the phase error becomes excessive, the output from comparator 6 becomes alternating and operates a changeover switch 10 so that amplifier 7 is now connected to regulator 11. This regulator compares a speed signal from tachometer generator 4 with a reference voltage. In another arrangement, the auxiliary motor drives a part of the A. C. machine, such as a stator or intermediary rotor, which is normally stationary.
Patent GB-977403-A (GB)
Title: Improvements in electrically controlled governing mechanisms for electric fluid turbines
IPC: F01K7/34
Filed: 1962-08-10
Abstract: 977,403. Turbines. GENERAL ELECTRIC CO. Aug. 10, 1962 [Aug. 14, 1961], No. 30745/62. Addition to 899,914. Heading F1T. [Also in Division G3] A control system for a multi-stage turbine comprises speed transducer 62 as well as pressure transducers 68, 64, associated with extraction conduits 22, 23, the signals from the transducers being combined to control servomechanisms 76, 77, 78, 80, coupled to inlet valves 18, 19, and interstage valves 20, 21. A summing circuit 122 for regulating the inlet valves has control components respectively representing the desired speed and deviation therefrom, and the desired pressures in the extraction conduits and the deviations from such pressures. The desired position of valve 20 is determined by the output of summing circuit 150 which is supplied with speed control components in addition to other components representing a desired pressure in conduit 22 and deviation therefrom obtained through inverter 139, an initial position of valve 20 relative to the inlet valves, and a desired pressure in conduit 23 and deviation therefrom. If there is a drop of pressure in conduit 22, the circuits 122, 150, operate to open valves 18, 19, and close valves 20, 21, to maintain the load and pressure in conduit 23 constant whilst increasing the flow through conduit 22. The desired position of valve 21 is determined by the output of summing circuit 184 which is provided with speed control components, in addition to components obtained from inverters 139 and 183. There is a further control component representing the initial position of valve 21 relative to the inlet valves. When there is a drop in pressure in conduit 23, the valves 18, 19, 20, are moved in the open direction whilst valve 21 is moved towards closure. Economy operation is provided by moving valves 20, 21, to preset minimum opening positions. The servomechanism 76 comprises servo valve 158 and ram 160 for driving the inlet valve 18. Positional feed-back is provided. Specification 977,402 also is referred to.
Patent GB-650808-A (GB)
Title: Improvements in electrical sound reproducing apparatus
IPC: H04R15/00
Filed: 1947-12-31
Abstract: 650,808. Magneto - - strictive apparatus. SYKES, A. F. Dec. 31, 1947, No. 30815/49. Divided out of 650,769. [Class 40 (iv)] A pair of magneto-strictive rods 10, 10a, arranged as a U or V, apply vibrations tangentially to the curve of a curved diaphragm 95 in a loud-speaker. Specifications 246,099, [Class 40 (iv)], and 650,769 are referred to.
Patent GB-768279-A (GB)
Title: Heat absorbing means
IPC: F16D69/02
Filed: 1954-10-26
Abstract: 768,279. Valves. GOODYEAR TIRE & RUBBER CO. Oct. 26, 1954 [June 24, 1954], No. 30834/54. Class 7 (6). [Also in Group XXXIV] Bodies which are required to absorb a great amount of heat, such as engine valves, are cooled by the introduction of a coolant under pressure into the interconnecting cellular-like construction 11, 12 of the body 10, the passages being sealed by closures 14. Water, ammonia or other suitable liquids may be used as the coolant and may be introduced at such a pressure that when the body is heated, the pressure of the coolant will exceed its critical pressure thus increasing the heat absorbing capacity of the coolant. Alternatively the coolant may be introduced at a pressure at least that of the critical pressure to achieve the same result.
Patent GB-754313-A (GB)
Title: Improvements in or relating to apparatus for orienting substantially cylindrical articles such as bottles to be neck-banded
IPC: B65C9/06
Filed: 1954-10-26
Abstract: 754,313. Orientating articles. MEYER MANUFACTURING CO., G. J. Oct. 26, 1954 [April 13, 1954], No. 30841/54. Class 117. [Also in Groups XVII and XXX] Relates to means for orienting articles to a predetermined position and particularly to presenting labelled, closured bottles B to a neck-banding machine as described in Specification 725,512 [Group XVII] with a design D on the label in a predetermined position relative to the banding machine. The band G has a design D<SP>1</SP> and the purpose of the invention is to have the designs D, D<SP>1</SP> colinear. The bottle has a peripheral projection T. According to the invention the bottles are moved into their final position, in which projection T co-acts with an abutment, by a plurality of independent impulses which successively rotate the bottle about its vertical axis. The bottles are fed by an endless belt conveyer (not shown) into pockets 30 in a star wheel assembly W which is rotated step by step. The entry position is B<SP>2</SP>. At position B<SP>3</SP>, the bottle is rotated by a relatively rapid friction roll 25 until the projection T abuts a stop A carried by the star wheel. As the bottle is moved between positions B<SP>3</SP>, B<SP>4</SP> it is contacted by a stationary friction pad 83, the drag of which rotates the bottle in the reverse direction through about 30 degrees. At position B<SP>4</SP>, the bottles are rotated in the forward direction until the projection T agains contacts the stop A by a relatively slow friction roll 26 and the neck-band is applied by means (not shown). During the application, the roll 26 maintains the projection T in contact with the stop. The bottle then passes to idler position B<SP>5</SP> and is discharged from the machine by an endless belt conveyer at position B<SP>6</SP>. A detector arm at position B<SP>2</SP> starts the machine motor when a bottle is present. An accumulation of bottles at position B<SP>6</SP> operates a detector arm to stop the machine motor. If a bottle jam occurs between positions B<SP>2</SP> and B<SP>6</SP> a pivoted plate, which is spring-urged inwardly, is moved outwards by the jammed bottles to stop the machine motor. Friction rolls 25, 26 are carried on pivoted arms which are urged inwardly towards the bottles by springs, adjustable stops being provided to limit their inward motion. The rolls are driven continuously through electrically operated slipping clutches which limit the torque applied to the bottle. The star-wheel assembly W consists of a central shaft 27 having upper and lower spiders 29, 28 having recesses 33, 30 which receive respectively the bottle necks N and the bottle bodies. Antifriction rollers 34a, 32a in the recesses allow the bottles to rotate easily. The bottle necks and bodies are guided by curved plates 36, 35.
Patent GB-682832-A (GB)
Title: Improvements in recovery of metals from sulphur-containing metallurgical slag
IPC: C22B7/04
Filed: 1950-12-18
Abstract: A method of treating sulphur-containing metallurgical slag having as ingredients iron and a smaller amount of a metal of the group copper, nickel and cobalt or mixtures thereof, comprises introducing into the slag an amount of reducing agent not greater than 50 per cent of that required to precipitate all the iron from the slag, bringing the slag to a molten state thereby precipitating substantially all of the said metal and only a small proportion of the iron as matte and forming a secondary slag, and separating the matte from the secondary slag, the reducing agent being selected from the group ferro-silicon, and an alloy of silicon, aluminium and iron.  The amount of reducing agent used may be not greater than 35 or even 20 per cent of that necessary to precipitate all the iron.  The secondary slag may be mixed with lime and a material capable of reducing ferrous oxide to metal, the mixture being melted to precipitate iron which is then separated. The reducing agent may be ferro-silicon calcium carbide or an alloy of silicon, aluminium and iron.
Patent GB-1455765-A (GB)
Title: Combine harvesters
IPC: A01F12/44
Filed: 1974-07-11
Abstract: 1455765 A shaker and a combing device of a combine harvester INTERNATIONAL HARVESTER CO 11 July 1974 [11 July 1973] 30847/74 Heading A1F A combine harvester comprises a frame 15, a shaker table 2 reciprocable in the directions of the double headed arrow f 1  and having a discharge end for discharging threshed material, a comb device 3 including a support member 12 and a series of teeth 13 mounted on the member 12, a cleaning device including sieves 4 and 5, the comb device 3 being coupled to the table 2 by means of links 18, 19 which are pivotally mounted on the shaker table 2, the link 18 carrying a crank rod 29 and a roller 28 for riding on a cam surface 27 fixed to the frame 15, the arrangement being such that when the table 2 reciprocates in the directions f 1 , the comb device 3 reciprocates in the same direction and also in the directions f 2  for distributing the threshed material over the cleaning sieves 4, 5: A tension spring (32) Fig. 5 (not shown) maintains the roller 28 abutting against the cam surface 27. In another embodiment Fig. 6 and 7 (not shown) the movement of the comb device 3 is controlled by a roller (47) which is mounted on the support member 12 and which engages a cam groove (48) of a support mounted on the frame 15.  In another embodiment Figs. 8-9 (not shown) the pivotal connection governing the movement of the comb device 3 is in the form of a bell crank (53) which is linked pivotally to the support member 12 and to the shaker table 2 and also fixedly mounted by means of a rod 58 to the frame 15.
Patent GB-1471290-A (GB)
Title: Curing of amine-curable polymers and prepolymers
IPC: C08G59/50
Filed: 1974-07-12
Abstract: 1471290 Curing amine-curable polymers E I DU PONT DE NEMOURS & CO 12 July 1974 [12 July 1973] 31047/74 Heading C3R Amine-curable polymers or prepolymers are cured with a curing agent comprising (i) a source of active hydrogen having one or more Zerewitinoff active hydrogens and an ionization constant such that its pKa is greater than 6À0 and (ii) a complex of 4,4<SP>1</SP>-methylene dianiline and a salt selected from the nitrites and halides (other than the fluorides) of sodium and lithium and sodium cyanide and/or a complex of racemic 2,3 - di(4 - aminophenyl)butane and a halide salt (other than the fluoride) of sodium, potassium, rubidium or caesium. The curable polymers are polyurethanes containing isocyanate groups in particular, but may also be epoxy resins, halogen-containing hydrocarbon polymers, chlorosulphonated polymers, polymers containing acid halide groups, haloformate groups or anhydride groups and organopolysiloxanes. The active hydrogen-containing compound (i) is preferably a polyhydric alcohol, e.g. 1,4-butane diol or glycerol. The preferred complex (ii) is a complex of 4,41-methylene dianiline and sodium chloride in a mole ratio of 3 : 1. Suitably the complex is employed in the form of a dispersion in a carrier which is inert or active towards the curable polymer. The inert carrier may be di(2-ethylhexyl)phthalate or an aromatic oil. The active hydrogen containing compound (i) may be contained in the dispersion or may comprise the active carrier for the dispersion. Such active carriers may be polyalkylene ether glycols or polyester glycols. The dispersion may contain an oil-soluble dispersing agent such as lecithin. In the case of the curable polymer being a polyurethane containing free isocyanato groups, curing may be effected at 20-150 C. Polyurethane prepolymers may be partially cured at ambient temperature to form a plastic gum.
Patent GB-503108-A (GB)
Title: A process for obtaining organic compounds from the acid wastes from the refining of mineral oils
IPC: C10G17/10
Filed: 1937-11-11
Abstract: 503,108. Recovering organic compounds from acid wastes. WINKLER, J., PIOTROWSKI, W. J., and GALICYSJSKIE TOWARZYSTWO NAFTOWE GALICJA SOC. ANON. Nov. 11, 1937, No. 31052. Convention date, Dec. 2, 1936. [Class 91] When obtaining organic compounds from the acid wastes of the refining of mineral oils with sulphuric acid, neutralization is effected in absence of water with the wastes dissolved in high boiling organic oils obtained by the process of the present invention or by fusion of neutralized acid tar as described in Austrian Specification 148,998. On neutralization, metal sulphate precipitates, the oils remain dissolved and are freed from solvent by distillation. Calcium hydrate and magnesia are suitable neutralizing agents. In an example, 1000 kg. of acid wastes from lubricating oil refining are stirred into a vacuum still containing 1000 kg. of organic compounds at 110‹ C., obtained in a previous operation; on solution 150 kg. of magnesia are added at 120‹ C. When reaction ceases distillation at 50 mm. is effected, a first fraction being collected up to 280‹ C.
Patent GB-992862-A (GB)
Title: Automatic landing approach for aircraft
IPC: G05D1/02
Filed: 1962-08-14
Abstract: 992, 862. Automatic control of aircraft. LEAR SIEGLER Inc. Aug. 14,1962 [Oct. 30,1961], No.31082/62. Heading G3R. In an automatic landing approach control system for an aircraft a first electrical signal is produced in dependence on lateral deviation from a path defined by a ground transmitter, a second electrical signal is produced in dependence on deviation from a selected course and a third electrical signal is produced in dependence on lateral acceleration, and (a) the first signal controls roll (b) excesses of the first and third signals above predetermined magnitudes are combined with the second signal to control heading. In Fig. 1 ILS signals dependent on displacement from a path defined by a ground transmitter are applied to a terminal 23 and passed through a modulator 24, amplifier 25, limiter 1, and amplifier 27, to restore the aircraft to the desired path by controlling angle of bank of the aircraft. Signals dependent on bank attitude are applied to a terminal 20 and passed through a filter 1 and amplifier 26 to stabilize banking. Filter 1 is of the high and low pass type to cause the angle of bank to slowly decrease from the initial value produced by the ILS signals and then to increase again if, for any reason, the aircraft has not returned to the centre of the beam. Rate and integral components are added to the bank controlling system by a resistance capacity differentiating circuit 28 and an electro-mechanical type integrator 32 respectively, signals from the latter being derived through output lead 34 of a limiter 2. The integrator is effective to counteract the effect of cross winds. Switch 33 operates to maintain the integrator output at zero prior to the commencement of an approach. Signals corresponding to the extent by which the output of integrator 32 exceeds a predetermined value are derived through output lead 35 of limiter 2 and applied to control the heading of the aircraft through an amplifier 42. Excess of ILS signals derived by a circuit 30, is also applied to amplifier 42. Heading error signals derived from a directional gyro and applied to a terminal 37, lateral acceleration signals applied to a terminal 38, and rate-of-turn gyro signals applied to a terminal 40, are also passed to amplifier 42 to stabilize the heading of the aircraft. The lateral acceleration signals are limited by a circuit 39, and an integral component of the rate of turn signals is added by applying them additionally, through a low-pass filter 2. Details of the filter circuits and Zener diode limiters are given.
Patent GB-392196-A (GB)
Title: Improvements in covers for the tyres of spare wheels of motor vehicles
IPC: B62D43/00
Filed: 1931-11-10
Abstract: 392,196. Spare-wheel covers and holders. RYCROFT, N., CORNER, J. A., CORNERCROFT, Ltd., 2, Vecqueray Street, Coventry, and PUBLIC TRUSTEE, (Representative of MEATES, T. W.), Public Trustee Office, Kingsway, London. Nov. 10, 1931, No. 31098. [Class 136 (i).] Covers for the tyres of spare wheels of motor vehicles, and more particularly those of the type made of metal or other rigid or semirigid material, and comprising a peripheral portion adapted to enclose the tread of the tyre and an annular portion adapted to cover one side of the tyre, the cover being transversely split or divided at one or more points, are provided with one or more peripheral bands or rings arranged between the marginal edges and adapted to embellish the cover and/or to secure it in position about the tyre.. The bands may be made of metal &c., and may be either permanently fixed to the cover or mounted loosely thereon, and located by grooves, seatings &c. around the periphery, the bands being arched, fluted, ornamented, &c. In the transverselysplit cover 'a shown in Fig. 3, the band b is contracted by means of a fastening c so as to secure the cover about the tyre. The lower part of the wheel may fit into a well, or into fixed shoes e, Fig. 4, on the vehicle, and the upper part may be provided with a cover a secured by a band b, which is attached to a stud e<1> and is fastened at c.