baber/WOPTO huggingface dataset:
Patent GB-1500836-A (GB)
Title: Fluid pressure control system for variable displacement pumps
IPC: E02F9/22
Filed: 1976-02-11
Abstract: 1500836 Fluid-pressure servomotor systems CATERPILLAR TRACTOR CO 11 Feb 1976 [4 June 1975] 5364/76 Heading G3P A hydraulic control system for controlling the output of a plurality of variable displacement pumps 10, 12 driven by a single prime mover 24 comprises a source of pilot pressure including a fixed displacement pump 26 driven by the prime mover, a valve 46 responsive to deviation from a predetermined normal operating speed of the prime mover for controlling the supply of pilot pressure to actuators 38, 39 for varying the displacement of the pumps, and means 58, 60 for rendering the valve 46 responsive to deviation from a speed different from the normal operating speed. The actuators may also be operated through a shuttle valve 34 by the sum of the output pressures 78, 80 of the pumps 10, 12. Specification 1436613 is referred to.
Patent GB-903644-A (GB)
Title: Improvements in or relating to women's garments
IPC: A41D7/00
Filed: 1959-10-22
Abstract: 903,644. Swim suits; brassieres. GORDON, B. D. Oct. 22, 1959 [Feb. 2, 1959], No. 5378/62. Divided out of 903,643. Class 141. [Also in Group VIII] In a women's garment with a knitted front panel, each breast cup has a lower portion with upwardly-diverging wales and an upper portion with upwardly-merging wales. As shown, Fig. 1, a swim suit comprises front and back panels 10, 12 stitched together at the sides and crotch, the front panel being made in two halves 20, 22 which are then sewn together. The halves 20, 22 are knitted simultaneously on a standard full-fashioning machine (see Group VIII). A brassier front panel may be knitted similarly in two parts 30<1>, 32<1>, Fig. 2.
Patent GB-511536-A (GB)
Title: Improvements in or relating to the treatment of textile fibres
IPC: D06M13/395
Filed: 1938-02-21
Abstract: 511,536. Cellulose derivatives. DEUTSCHE HYDRIERWERKE AKT.-GES. Feb. 21, 1938, Nos. 5427 and 5428. Convention dates, Feb. 19, 1937, and March 27, 1937. [Classes 2 (ii) and 2 (iii)] [Also in Group VIII] Animal, vegetable or artificial fibres or fabrics, e.g., of cotton, wool and artificial silk or mixtures, are rendered soft and waterrepellent by treating them in a bath containing a mono or di-substituted carbodiimide having at least one alkyl residue containing at least 10 carbon atoms in the molecule. The materials are then preferably heated to fix the compounds on the fibres. Suitable solvents include benzene, benzine and chlorinated hydrocarbons. The compounds may be substituted by groups in addition to the alkyl group which may be attached to the carbodiimide residue through other atoms or groups. Suitable alkylated diaryl carbodiimides may be prepared by treating a, substituted aniline with carbon disulphide and splitting off hydrogen sulphide in known manner with mercuric oxide or lead carbonate, e.g., alkoxyphenyl carbodiimides may be thus prepared from alkyl ethers of amino-phenols. Phenyl-carbodiimides may also be made by heating phenyl isocyanic acid esters. Unsymmetrical mono-substituted diarylcarbodiimides may be obtained from unsymmetrical thioureas made by reacting phenyl mustard oil with alkyl-substituted anilines. Other suitable compounds are dialkylcarbodiimides and aryl-alkyl-carbodiimides in which the alkyl residue is attached to nitrogen and if desired one or more alkyl residues attached to the aromatic nucleus. Derivatives of cyanamide which react according to the formula HN = C = N.R are also suitable, and may be made by desulphurizing thioureas with lead oxide, lead carbonate or mercuric oxide. Examples describe the preparation of (1) di- (cetylphenyl)-carbodiimide by heating lead carbonate with a toluene solution of cetylphenyl thiourea made from cetylaniline (Bear. 19.2984), carbon disulphide and sulphur; (2) a wax-like substance in a similar manner from hexadecoxy-phenyl thiourea made from hexadecyl-p-aminophenyl ether; (3) a substance by refluxing a mixture of phenyl mustard oil and cetyl-p-aminophenyl ether in benzene and desulphurizing with lead carbonate ; (4) dilaurylcarbodiimide by treating with mercuric oxide di-lauryl-thiourea prepared by heating laurylamine-lauryl-dithiocarbamate made by reacting monolaurylamine and carbon disulphide ; (5) a carbodiimide by treating with lead carbonate a toluene solution of hexadecoxyallyl-thiourea made by heating allyl mustard oil and hexadecyl-p-aminophenyl ether; (6) wax-like mono-hexadecoxy-p-phenyl-carbodiimide (hexadecoxy-p-phenyl-cyanamide) by desulphurizing as in (5) mono-hexadecoxy-pphenyl-thiourea prepared by treating a toluene solution of hexadecoxy-p-phenyl mustard oil with dry ammonia gas.
Patent GB-812226-A (GB)
Title: Improvements in or relating to the manufacture of artificial threads, fibres, films,foils and like products from viscose
IPC: D01F2/10
Filed: 1957-02-18
Abstract: Artificial threads, fibres, films, foils and like products are produced by spinning viscose in the presence of at least one polyoxyethylene ester of abietic acid and/or hydroabietic acids in an acid spinning bath, the viscose and/or the spinning bath containing respectively 0.2 to 4 per cent by weight, based on the cellulose in the viscose, and 0.005 to 0.5 per cent by weight of the polyoxyethylene ester, and the spinning bath containing at least 2 per cent by weight of a zinc salt, the products formed being stretched.  The ester preferably contains between 5 and 300 mols. of ethylene oxide to one mol. of acid, and may be added to the viscose at any stage prior to spinning, preferably during dissolution of the xanthate.  The viscose may have a cellulose content of 4-10 per cent and an alkali content of 4-9 per cent, and the amount of carbon bisulphide used in xanthation may be from 25 to 50 per cent (based on oven-dry cellulose).  The ratio between the percentage by weight of acid in the spinning bath and that of alkali in the viscose is preferably between 1.3 and 0.8. The spinning bath preferably contains 4-8 per cent of sulphuric acid, 10-25 per cent of sodium sulphate and 2-15 per cent of zinc sulphate, and is preferably maintained at 40-80 DEG  C.  The products may be passed through a secondary spinning bath, preferably maintained at 50-100 DEG  C., containing water, 1-3 per cent of sulphuric acid or the primary bath diluted to about one fourth of its concentration, and may be stretched in the primary bath, in the air between feed wheels, in the secondary bath or in combinations of these.  In a description of the properties of the products, reference is made to the determination of the "neutralization point," i.e. the point at which the alkali hydroxide of the viscose is just neutralized by the acid of the spinning bath, by incorporating into the viscose 0.05 per cent (based on the viscose) of bromcresol purple indicator, spinning in a conventional manner and measuring the distance from the spinneret to the point of colour change in the products.
Patent GB-880766-A (GB)
Title: Alternating current generators
Inventor: MAY CLIFFORD FRANK
IPC: H02K21/38
Filed: 1959-02-17
Abstract: 880,766. Permanent magnet generators. LUCAS (INDUSTRIES) Ltd., JOSEPH. Feb. 11, 1960 [Feb. 17, 1959], No. 5438/59. Class 35.  A tacho-generator for attachment to the axle box of rail vehicles comprises an inductor rotor 4 secured to the vehicle axle 3, and a generating coil 13 between two magnetic plates 10, 11 having relatively staggered teeth co-operating with the rotor teeth. Flux is provided by a sintered magnet 9 secured to a mild-steel plate 8 and returns through the casing. The stator unit is in a resinfilled pocket at the side of the casing and has terminals 14. Specification 880,767 is referred to.
Patent GB-504064-A (GB)
Title: Fastening device for shoes and the like
IPC: A43C5/00
Filed: 1938-02-21
Abstract: 504,064. Shoe &c. eyelets. SCHWARZE. 0.. SCHWARZE, W., and SCHWARZE. G. Feb. 21, 1938, Nos. 5445 and 5446. Convention dates, April 17, 1937 and May 29, 1937. [Class 43] A shoe &c. eyelet 3, 9, 25, 33, is furnished with a button-like head 6, 10, 23, 31 adapted to lie on the exterior of the shoe, the point of entry 7, 11, &c. of the shoe lace 8 through the head being located eccentrically thereof and in a position to give direct access of the lace end to the interior of the eyelet. Several further modifications are shown and described in which the eyelet is formed either as one piece or of several portions, which may be suitably ornamented by pressed-up ribs.
Patent GB-230085-A (GB)
IPC: H01B11/16
Filed: 1925-02-27
Abstract: 230,085. British Thomson-Houston Co., Ltd., (Assignees of Allgemeine Elektricitats-Ges., and Sattelberg, O.). Feb. 29, 1924, [Convention date]. Simultaneous telegraphy and telephony; phantom-circuit systems.-In a four-wire cable wound according to the known " spiral quad " formation in which all four conductors are directly twisted together, the physical circuits are employed for telephony and the phantom circuit with little or no added load is utilized for telegraphy and signalling or calling purposes. The necessity of accurately balancing the circuits is avoided by employing different ranges of frequency for the different purposes. In the system shown, telephone sets 5, 6 provided with chokes 7, 8 which block the lower frequencies serve for telephony over the pairs 1, 2; 3, 4; an instrument 14 fitted with a filter 13 passing only the lowest frequencies provides direct-current telegraphy over the phantom circuit; whilst duplex harmonic telegraphy also over the phantom circuit is available by means of instruments 16, 17 associated with a band filter 15 covering a range of frequencies lying between those passed by the devices 13, 7. Further telegraph circuits may be obtained by combining two phantom circuits of the first order to form a phantom of the second order and so on. Telephonic amplifiers in the side circuits may be by-passed by the provision of differential coils having their mid-points directly connected together.
Patent GB-1064233-A (GB)
Title: Improvements in or relating to the purification of adipodinitriles
IPC: C07C/
Filed: 1964-02-11
Abstract: Trimethyladiponitrile (2,2,4- or 2,4,4-isomers) obtained by the reaction of trimethyl adipic acid with ammonia is purified by treating the crude product with aqueous ammonia at 10 DEG  to 200 DEG C., separating the reaction product and distilling the organic phase thus separated. The aqueous phase remaining after separation of the organic phase may be recycled to the dinitrile production stage.  In a preferred embodiment fresh aqueous ammonia is introduced into the last of a series of reactors and the aqueous phase from every reactor except the first is introduced into the next previous reactor, the organic phase from each reactor except the last is introduced into the next subsequent reactor, and the aqueous phase from the first reactor and the organic phase from the last reactor are withdrawn from the washing system, the crude dinitrile being introduced into the first reactor.  An additional step of treating the crude dinitrile obtained by the condensation of oily trimethyl adipic acid with ammonia with an alkali metal hydroxide solution subsequent to the aqueous ammonia wash may also be included in the purification process of the invention.
Patent GB-547483-A (GB)
Title: Improvements in h-section rails for supporting wall and ceiling lining boards, sheets or slabs
IPC: E04B9/06
Filed: 1941-02-26
Abstract: 547,483. Walls and wall coverings. INKLEY. B. Feb. 26, 1941, No. 5770/42. Divided out of 545,793. Drawings to Specification. [Class 20 (iv)] Wall boards and the like are supported between the flanges of H-section rails, such flanges being deformed, bent-over to grip the edges of the boards.
Patent GB-664517-A (GB)
Title: Improvements in centrifugal separation
IPC: C22B1/10
Filed: 1949-03-03
Abstract: 664,517. Centrifugal-separators. FASSOTTE, A. D. H. L., and COMPAGNE DES METAUX D'OVERPELT-LOMMEL ET DE CORPHALIE. March 3, 1949, No. 5816/49. Class 23 [Also in Group XII] A process for the roasting of sulphide or arsenic ores by the " flash roasting and fluisolid " methods includes a reaction chamber a which contains dust suspended in a gas centrifugal separator of the type described in Specification 657,238 is used for repelling small grains of dust which would otherwise be carried from the chamber by the gas. The means comprises a bladed rotor R, the gas being admitted at the periphery and travelling towards the centre and leaving the rotor at its periphery in a second chamber l, while the grains in the gas are flung off the rotor in the chamber a. Ore is fed from a hopper b by means of a worm c. Air is blown through a grating f from a chamber d and roasting of grains, e.g. blendes or pyrites, takes place. The larger roasted grains accumulate at g and pass to a collector i while the smaller grains, repelled by the rotor, are roasted and then fall to g. Specification 223,741, [Class 51(ii)], also in referred to.
Patent GB-1196184-A (GB)
Title: Reduction of Iron Oxide Ores
Inventor: ROBIETTE ALFRED GORDON EVANS
IPC: C21B13/00
Filed: 1968-02-06
Abstract: 1,196,184. Extracting iron. J. C. I. METAL HOLDINGS PROPRIETARY Ltd. Feb. 4, 1969 [Feb. 6, 1968], No. 5825/68. Heading C7D. [Also in Division F4] Pellets of finely-divided iron ore and carbonaceous reducing agent have mixed with them granular carbonaceous material of smaller particle size than the pellets and are then heated in a shaft kiln so that the pellets are at least 90% reduced; at the bottom of the shaft the mixture passes over a discharge edge to a screen out of contact with the air, where the carbonaceous material is separated from the reduced pellets, the latter passing to a furnace containing a bath of steel where they are melted while the former is cooled to below combustion temperature and recycled. By removing carbon from the mixture in this way steel may be directly produced in the melting furnace without the necessity of a conversion operation. As illustrated, moist pellets from hopper 23 are dried and pre-heated by hot gases while travelling on conveyer 23 to hopper 14, where they are mixed with granular carbonaceous material which may have been recycled through line 26 and possibly with fluxes. Hopper 14 discharges into shaft 10 where the charge is heated by hot gases from burner 12, before being discharged by reciprocating plate 15 to screen 19, the hot pellets passing to insulated hopper 30 and the carbonaceous material to sprays 32 and magnetic separator 33. Air may be introduced at 18 to burn a part of the carbon monoxide and hydrogen in the ascending gases.
Patent GB-508775-A (GB)
Title: A drawing press for shaping sheet metal
IPC: B21D11/02
Filed: 1939-02-22
Abstract: 508,775. Shaping sheets. HENSCHEL FLUGZEUG-WERK AKT.-GES. Feb. 22, 1939, No. 5893. Convention date, April 7, 1938. [Class 83 (iv)] Stamping; bending.-In stretching and shaping a metal sheet white held by clamps 5 at opposite edges and forcing a pattern carrying table 1 against it, and/or by screwing out the clamps horizontally, the pattern table is rotatable on a central pivot 2, in a firm bearing 3, so that after one shaping draw, the clamp can be released, the table and sheet can be rotated horizontally and the sheet reclamped at other edges as in Fig. 3 and a second shaping draw can be made in which the direction of sheet tension is thereby changed. The upward draw is effected by a number of rams 8 arranged in a circle bearing on the press table, or four rams may be arranged crosswise, all four being used for a broad pattern, and two only for a narrow pattern.
Patent GB-156558-A (GB)
Title: Improvements in or relating to change-speed and reversing gears for motor vehicles
IPC: G05G9/10
Filed: 1920-02-27
Abstract: 156,558. Lebeau, G. M., and Cordier, H. V. Jan. 8, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Interlocking and guarding against wrong movements; setting and retaining devices. - The change-gear lever a works in a gate p and is pivoted at e on a collar rotatable on the shaft b. The lever can be moved into either of the side slots of the gate against the action of one of two springs n, to engage the corresponding arm c or d, which is then operated by the lever. The arm not in use is held by its spring engaging the central opening in the gate, and the lever is held against a notch in any gear position by the spring n. The arm d slides the propeller shaft of the vehicle to give a direct drive on the low gear, as described in Specification 154,553, and the arm c brings a reverse pinion into action. A brake lever t is pressed by a spring r into engagement with rack teeth on the edge of the gate p.
Patent GB-823540-A (GB)
Title: Orthopaedic apparatus
IPC: A61F5/02
Filed: 1956-02-28
Abstract: 823,540. Spinal supports. VILPON, U. A. Feb. 28, 1956 [March 25, 1955], No. 6132/56. Class 81 (2). Means for application to the dorsal region of the vertebrae column comprises flexible members 6, 6<SP>1</SP>, Fig. 1, of microcellular rubber &c. interconnected by supporting straps 9, 9<SP>1</SP> and incorporated in a bodice 16. The members may be interconnected by crossed straps 9, 9<SP>1</SP>, Fig. 2, and attached to a belt 10 having a tightening buckle 11. Similar members 2, 2<SP>1</SP> may be incorporated in a body belt 1 for application to the lumbar region of the vertebral column, the belt 1 being connected by straps 17, 17<SP>1</SP> to the belt 10.
Patent GB-750151-A (GB)
Title: Improvements in or relating to automatic frequency control systems
Inventor: MANNHEIMER DAVID
IPC: H03L7/04
Filed: 1953-03-05
Abstract: 750,151. Automatic frequency control systems. SPERRY RAND CORPORATION. March 5, 1953, No. 6202/53. Class 38 (4). [Also in Group XL (c)] Two oscillators, one at least of which is amplitude modulated so that the two outputs are distinguishable, are maintained at the same operative frequency by a common discriminator providing separate outputs each controlling a respective oscillator. As shown, applied to a radar transponder beacon, a magnetron oscillator 2 transmitting a microwave pulse and a receiver local oscillator 1, e.g. a klystron, are connected from their output and input waveguides 21, 11 respectively by directional coupling with wave-guides 33, 34 to feed a common discriminator 3 comprising cavity resonators 40, 41 tuned above and below the desired frequency and detector crystals 42, 43, with outputs AC and BD applied to a network 80-83 (Fig. 4), one of whose outputs comprises differential integrating circuits 80, 81 and 801, 81<SP>1</SP> having a D.C. voltage output in magnitude and sign corresponding to any frequency drift of the klystron local oscillator 1, and whose other output is applied through capacitors 82, 82<SP>1</SP> to independent pulse amplifiers 61, 61<SP>1</SP>, differentially energized in accordance with any frequency drift of the magnetron oscillator 2. The amplifiers 61, 61<SP>1</SP> respectively feed seriesconnected amplifiers 62, 62<SP>1</SP> whose outputs are applied through cathode followers 63, 63<SP>1</SP> to detectors 64, 64<SP>1</SP> feeding through amplifiers 65, 65<SP>1</SP>, cathode followers 66, 66<SP>1</SP> driving a tuning motor 70. The arrangement is such that the independently amplified pulses are differentially combined at the anodes of amplifiers 65, 65<SP>1</SP> by the common cathode coupling 71, 72. Further, the pulse amplitudes are added by the cathode circuit of tubes 65, 65<SP>1</SP> to develop a negative voltage which biases to cut off a valve 75, which when no pulses are present, partly shunts one or other of the anode loads of valves 65, 65<SP>1</SP> and causes the magnetron tuning motor 72 to scan the frequency range until the discriminator control range is reached. A switch 76 is tripped at the limit of each scan so that the valve 75 shunts the other of valves 65, 651 and the motor 70 reverses. Finally the - motor 70 is controlled only by the amplified discriminator output from valves 66, 661. The klystron D.C. control signal is applied through. a contact potential generating diode circuit 54 to a D.C. amplifier 50 and cathode follower 51 connected with positive feedback, e.g. to the reflector electrode of the klystron local oscillator. An R-C oscillator 52 acts through the cathode follower 51 to sweep the frequency range of the klystron local oscillator until a D.C. control voltage appears from the discriminator, whereupon it is disabled, as described in Specification 696,750.
Patent GB-181068-A (GB)
Title: Improvements in machines for wiping and polishing drinking glasses and like receptacles
IPC: A47L15/00
Filed: 1921-02-24
Abstract: 181,068. Ireland, F. Feb. 24. 1921. Drinking-vessels, drying. - An apparatus for wiping and polishing glasses comprises an electromotor 32, attached to a side frame 13, which drives through gears 34, 20 the spindle 41 of a central internal wiper geared to the spindles of four external wipers arranged symmetrically around the spindle 41. The wipers consist of circular pieces of cloth separated by distancewashers mounted on the spindles 41 which are connected by bayonet-joints to driving-shafts 18 rotated in ball bearings 17 held in bosses 16. In the base 52 are arranged electric heating-coils 53, by means of which the wipers are dried. The machine is enclosed in a casing 51 with ventilation perforations in the top and a side-aperture 50 for insertion of the glass. The gearing is protected by a cover 48.
Patent GB-608731-A (GB)
Title: Improvements in or relating to synchronous motor clocks
IPC: F16H27/04
Filed: 1946-02-28
Abstract: 608,731. Electric clocks. HELFER, R. Feb. 28, 1946, No. 6299. Convention date, March 6, 1945. [Class 139] A synchronous motor electric clock in which the drive from the motor to the seconds hand is effected in step-by-step manner. A shaft 2, Fig. 1, is driven by a synchronous motor and carries a rib member 1 having sloping surfaces or ramps r, r<1> and engaging the teeth of a wheel 3 mounted on the seconds hand arbor 4. As can be seen from Fig. 1 the arrangement is similar to a worm and worm wheel mechanism and is such that for every revolution of the shaft 2 the wheel 3 is rotated one tooth pitch. In another embodiment, Fig. 3, the shaft 2 carries a disc 1 which has an oblique sharp tooth ramp x which co-operates with the teeth of the wheel 3 to rotate said wheel one tooth pitch for every revolution of the disc 1. In another embodiment (not shown) the disc 1 is provided with a peripheral flange which carries the oblique tooth x
Patent GB-1467944-A (GB)
Title: Treatment of wells
IPC: C09K8/72
Filed: 1975-02-14
Abstract: 1467944 Treating wells EXXON PRODUCTION RESEARCH CO 14 Feb 1975 [25 March 1974] 6353/75 Heading E1F A solvent for use in a preflush during sand consolidation, in an afterflush during sandstone acidisation, or in a flush to remove wellbore damage, comprises a C 4-10  alkyl ether of a polyglycol containing 10 to 22 carbon atoms per molecule. The polyglycol ether may have a formula of: where n=4-6 and m=4-10 and may be produced by reacting a C 4-10  alkyl alcohol with ethylene oxide in a weight ratio of from 1:0.8 to 1:2.5. The solvent may be mixed with a diluent, e.g. isopropanol.