baber/WOPTO huggingface dataset:
Patent GB-1166812-A (GB)
Title: Improvements in or relating to Static Inverters
Inventor: HORNER TERENCE PETER
IPC: H02M1/08
Filed: 1966-02-09
Abstract: 1,166,812. Inverting. PLESSEY CO. Ltd. 18 Jan., 1967 [9 Feb., 1966], No. 5775/66. Heading H2F. A control circuit for a three-phase static inverter comprises a master oscillator 1 which feeds a ring counter 3 producing six square-wave outputs 12 with progressive 60 degree phase shifts at one-sixth the frequency of the master oscillator, these being used to open gates 6 which are fed with pulses 7 at the master oscillator frequency. These pulses are fed through OR gates 8 to trigger the six thyristors in the inverter (Fig. 3, not shown); they are derived from a sawtooth waveform 4 feeding a Schmitt trigger 5 the D.C. level of which is controlled in accordance with the output voltage to vary the width of the pulses 7. Additional trigger signals are derived from the leading edges of the square waves 12 via differentiating circuits 10, and two pulses of 120 phase difference are fed through each OR gate 8 to trigger a thyristor and thereby allow a capacitor in the inverter to discharge and switch off another thyristor. The output is free of third harmonic content if the square waves 12 are phased at exactly 60 degree intervals, and may be smoothed in a filter to produce a sine wave. The switching devices in the inverter may be thyratrons.
Patent GB-1068901-A (GB)
Title: Improved method of compressing combustible powders and pyrotechnic devices formed by or comprising such compressed powders
Inventor: ABERG LARS DOUGLAS
IPC: F42B33/02
Filed: 1963-02-13
Abstract: 1,068,901. Filling cartridges. SCHERMULY Ltd. Feb. 12, 1964 [Feb. 13, 1963], No. 5786/63. Heading F3A. A method of pressing combustible powder within a smooth-wall casing consists of pressing the loose powder into a flexible non-metallic tubular member disposed within the casing during which pressing the tubular member slips and collapses axially relative to the casing wall. The casing 1 is closed at one end by a plug 2 and a circular cylindrical sleeve 4 with a shoulder 5 is mounted on the upper end of the casing 1. A rectangular sheet of waxed paper 0À002 to 0À005 inch thick or plastics film and with a width of one-and-a quarter times the internal diameter of the casing is disposed in the combined sleeve and casing to form a tubular lining 6. A powdery flare composition 9 is poured into the lining 6 and the upper end 11 of the lining is folded over and a millboard disc 10 is placed on top. A circular plunger having a sliding fit with the upper portion of the sleeve 4 is used to press the composition 9 and disc 10 into the casing 1 in one operation, the lining 6 contracting into. the casing by forming folds or corrugations During the compression the powder volume is reduced by between 30 and 70%. Lubrication may be used between the casing 1 and lining 6.
Patent GB-650092-A (GB)
Title: Improvements in optical comparator apparatus
IPC: G02B21/00
Filed: 1947-03-03
Abstract: 650,092. Optical gauging apparatus. JAMESON, J. L. March 3, 1947, No. 6054. [Class 106 (ii)] [Also in Group XX] An optical comparator comprises a mounting for a specularly reflecting test piece, a light projector for projecting a narrow beam of light on to a test piece carried by said mounting and means for effecting relative movement between the projector and the mounting to cause the surface of the test piece to be swept by the beam, whereby the beam can be reflected by the test piece on to a screen for comparison with a standard form. In the form shown, a reference piece R and a test piece T are each mounted on a carrier 6 which is coupled at 8 to a shaft 10 carrying worms 9 of opposite hand and manually rotatable through gears 11, 12. Each piece is illuminated by a narrow light beam emitted by fixed projectors 1 or 2, the beams being reflected from said pieces on to mirrors 3 or 4 which direct the beams on to a screen 5 for comparison. The mirrors are rotatable in synchronism by a manually-operable worm shaft 16. Another form is described wherein the beam reflected from a test piece is directed on to a screen for comparison with a series of negatives or cutouts of a standard form ; in this case, the screen may be coupled with the test piece mounting for synchronous movement therewith.
Patent GB-113038-A (GB)
Title: Improvements in or relating to the Cooling of Internal Combustion Engines.
IPC: F01P5/02
Filed: 1917-04-30
Abstract: 113,038. Villiers Engineering Co., Funck, G., and Farrer, F. H. April 30, 1917. Cylinders, cooling.-The fly-wheel A is provided with sheet-metal vanes B on the face adjacent to the engine. A casing D surrounds the fly-wheel and is open on its inner circumference; one edge E finishes close to the periphery of the vanes while the other edge extends towards the crankshaft leaving a circular opening G. An aperture or duct H is provided so that air is discharged towards the cylinder. The casing may be of annular or spiral form.
Patent GB-271954-A (GB)
Title: An improved waist band or belt for gents wear
IPC: A41F9/00
Filed: 1926-03-05
Abstract: 271,954. Smith, R. M. B. March 5, 1926. Belts.-A waist belt comprises two superposed strips a, b of rubber cemented together, with at one end a short reinforcement constituted by a piece of fabric c cemented between the rubber layers. This reinforcement supports a friction buckle d. The other end of the belt has a similar, but longer, reinforcement f. In a modification, a tongue buckle is used and the other reinforced end of the belt is perforated for engagement therewith.
Patent GB-178806-A (GB)
Title: Improvements in control valves for steam engines
IPC: F01B25/00
Filed: 1922-03-03
Abstract: 178,806. Lejeune, J. April 19, 1921, [Convention date]. Closure members. - A control valve device particularly applicable for use on locomotives comprises a plurality of independent valves arranged so that they may be operated successively by a single control rod. The actuating spindle 9 is adapted to work in a central guide 8 and is provided with a series of arms 10 having openings to receive the spindles of the valves 7. Eachspindle 12 has adjusting nuts 13 so that its effective length and therefore the order in which it is opened may be adjusted. The effective lengths of the spindles may be varied by placing the washers beneath the nuts.
Patent GB-267509-A (GB)
Title: Improvements in rotary pumps
IPC: F04C9/00
Filed: 1927-03-07
Abstract: 267,509. Camel, F. R., (Assignee of Mathieu, A.). March 11, 1926, [Convention date]. Fixed-abutment type; packing drums, vanes, &c.-A conical rotor c slotted to house a pivoted vane g contacts with the oblique inner face b<2> of the casing along a radial line passing between the inlet port e and the outlet port f of the pump. The vane, g is rigidly connected to a spherical bearing-member i. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification wherein a fibre face plate is interposed between the oblique inner face of the casing cover and the vane to take the wear, and a lubricant duct is provided for the bearing i. More than one vane may be used, such vanes being mounted either in the conical or the oblique member, either of which may be the rotor. This subjectmatter does not appear in the Specification as accepted.
Patent GB-776242-A (GB)
Title: Improvements in and relating to containers for dispensing fluids
IPC: B67D1/14
Filed: 1954-03-04
Abstract: 776,242. Dispensing liquids. LYONS & CO., Ltd., J., WHITE, P., and STEELE, A. H. V. March 4, 1955 [March 4, 1954], No. 6363/54. Class 116. Several outlets 3, 4, 5, 6 from an urn or other container can be operated simultaneously while at least one outlet can be operated independently of the rest. As illustrated the arms 7, 8, 9, 10 on the spindles of foul taps are joined by a channel section member 12 so that all the taps are opened simultaneously when a handle fitting in a socket 13 on the tap 6 is turned but the end portion 14 of the member 12 can be hinged upwardly free of a roller 11 on the arm 10 of the tap 6 so that this tap may be operated alone. The arm 8 of the tap 4 also carries a roller engaging within the member 12 while the arms 7, 9 of the taps 3, 5 are pivoted to the member 12 and are joined by a link parallel to the member 12. The taps may be constructed as described in Specification 776,241 [Group XXIX] and, as in that application, may permit simultaneous control of two or more liquids.
Patent GB-541073-A (GB)
Title: Process of colour photography and materials therefor
IPC: G03C7/29
Filed: 1940-04-09
Abstract: 541,073. Azo dyes. KODAK, Ltd. (Eastman Kodak Co.). April 9. 1940, No. 6387. [Class 2 (iii)] [Also in Group XX] is prepared by diazotizing metanilic acid and coupling in acid solution with 1-napthylamine- 6-sulphonic acid, diazotizing the product, coupling in acid solution with 2-ethoxy-1- naphthylamine-6-sulphonic acid, diazotizing the product, and coupling in alkaline solution with 2-amino-5-naphthol-7-sulphonic acid. The dye of formulais prepared by diazotizing 1 mol. of 1-amino-8- naphthol-3:6-disulphonic acid and coupling- in acid solution with 1 mol. of naphthylamine, again diazotizing and coupling in alkaline solution with 1 mol. of 1-amino-8-naphthol-3:6- disulphonic acid.
Patent GB-322964-A (GB)
Title: Improvements in or relating to optical systems for continuously moving kinematograph apparatus
IPC: G03B41/08
Filed: 1929-02-27
Abstract: 322,964. Roberts, F. G. A., and Campbell, C. W. R. Feb. 27, 1929. Drawings to Specification. Kinematograph apparatus.-In continuous-feed apparatus comprising a series of moving lenses and a stationary lens, the lenses and film being relatively adjustable to and from one another, the optical centre of the stationary lens is at or near one side, so that close optical approach to the adjacent element is possible without inconvenient physical approach. Specification 16200/15 is referred to.
Patent GB-471367-A (GB)
Title: Improvements in or relating to display devices
IPC: G09F13/16
Filed: 1936-03-03
Abstract: 471,367. Enamelling. HUNTER, F., and GRAINGER, W. S. March 3, 1936, No. 6443. [Class 56] [Also in Groups XVIII and XV] In a display device comprising a vitreousenamelled base coated with light-transmitting beads, the enamelled surface is coated with an adhesive consisting of a mixture of a vitreous flux with a fluid vehicle which is eliminable at a temperature below the fusing point of the beads, a layer of beads applied to the adhesive, and the device heated until the fluid vehicle is eliminated whereby the surface of the enamel is softened, the flux unites therewith and the beads sink into the flux and enamel surface. With a litho-printing varnish as the fluid vehicle, the device is heated to 650‹ F. when the varnish spontaneously combusts, and is then heated to between 800 and 900‹ F. and maintained at such a temperature until the beads have sunk in the enamel to the required depth. In a modification, the adhesive merely consists of the fluid vehicle.
Patent GB-628153-A (GB)
Title: Improvements in or relating to row crop cultivation, ploughing or the like
IPC: A01B69/02
Filed: 1947-03-07
Abstract: 628,153. Agricultural implements. FERGUSON HOLDINGS, Ltd., H., FERGUSON, H. G., SANDS, W. J., and CHAMBERS, J. March 7, 1947, No. 6456. [Class 6(i)] [Also in Group XXXI] A tractor-implement combination, of the type wherein the implement is hitched to the tractor by laterally-spaced draught links, is provided with a pendulum device, the displacement of which, on a slope, may be correlated with the lateral displacement of the implement relatively to the tractor. The device is mounted on the tractor front axle 9 and comprises a T- shaped rod pivoted on an axis S-S oblique to the line of travel. The pivots 15 are carried in a U-shaped frame 14 laterally adjustable on the axle. The length of the pendulum may be adjusted by vertical movement of the rod relatively to the pivots. The pendulum may include a hydraulic damping device. The Provisional Specification also describes a vertical pointer which projects above the front of the tractor and is connected to a shoe sliding along a ridge or other preformed track. The indicator may also give audible warning of lateral displacement. Specification 320,084, [Class 6(i)], 471,801, 510,352 and 541,220, [Group XXXI], are referred to.
Patent GB-594638-A (GB)
Title: Improvements in heat-insulating material
IPC: C04B28/18
Filed: 1944-04-06
Abstract: The cellular heat insulating material described in Specification 587,718 is caused to set more rapidly in the mould to a shape-sustaining form by the addition to the mixture of plaster of Paris and sodium silicate the latter preferably having a ratio of Na2O to SiO2 of 1 : 3.22.  A typical mix consists of lime 3.50 per cent., silica 5.00 per cent., bentonite 2.25 per cent., asbestos fibre 2.25 per cent., sodium silicate 2.70 per cent. and plaster of Paris 1.00 per cent., the remainder being water.
Patent GB-319651-A (GB)
Title: Improvements in or relating to the melting and esterification of resins or the like
IPC: C09F1/00
Filed: 1929-02-28
Abstract: 319,651. Sommer, J. Sept. 25, 1928, [Convention date]. Stationary mixers with rotary stirrers.-Apparatus for the esterification and melting of resins, particularly copal resin, for the preparation of copal and resin ester varnishes comprises a heated melting pot a having a cover and fitted with a centrifugal stirrer c, and a foam distributor b and means for introducing an indifferent gas at any desired depth, an inlet for an esterifying agent and a vapour outlet. The copal &c. is supplied through a manhole a<1>, and the pot heated. If copal is used, linseed oil is added to dissolve it. An indifferent gas such as carbon dioxide is introduced into the pot by a tube p which is vertically adjustable. Glycerine is supplied to the pot from a tank h. The vapours formed are drawn off into a cooler f, g, where with the exception of water vapours, they are condensed, and passed to the glycerine separator l. Glycerine is returned to the pot by pipe g. An air-admission cock m, an ester discharge cock r and a test-cock s are provided. Copal and resin oil condensates are taken from the separator l. Melting is stated to occur at 280-300‹ C., frothing being eliminated.
Patent GB-1526471-A (GB)
Title: Impact-resistant acrylonitrile copolymer process
IPC: C08F279/04
Filed: 1976-02-19
Abstract: 1526471 Graft polymerization process STANDARD OIL CO 19 Feb 1976 [5 March 1975] 06568/76 Heading C3P A graft polymer is prepared by copolymerizing a superstrate of 100 parts by weight of acrylonitrile and styrene monomers in the presence of from 1 to 25% of an elastomer substrate containing 50% or more of a polymerized diene, the acrylonitrile to styrene monomer molar ratio being maintained between 20 : 1 and 150 : 1 during the polymerization so that the final polymer contains a molar ratio of from 1À4 : 1 to 18 : 1 of polymerized acrylonitrile to styrene in the superstrate, and the polymerization being carried out with continuous addition of styrene and acrylonitrile during the polymerization and in such a manner that the percentage of unrealized total solids as measured during about the first two hours of the polymerization does not increase above the level of the percentage of unrealized total solids of the initial polymerization monomer charge comprising the monomers and elastomer. Examples are given in which acrylonitrile and styrene are grafted on to a butadiene-styrene elastomer by polymerization in aqueous emulsion.
Patent GB-658975-A (GB)
Title: Improvements in or relating to folding tables, dinner or tea wagons and the like
IPC: A47B31/00
Filed: 1948-03-02
Abstract: 658,975. Dinner wagons. WRIGHTON, F. March 2, 1948, No. 6595. [Classes 52 (ii) and 52 (iii)] A convertible dinner wagon having normally superposed shelves 15, 16 which can be swung into alignment on links 17, 18 has its end frames connected by a removable shelf 12 to facilitate dismounting for packing or transport. Drawers 32, 33 can be provided in the movable shelves 15, 16 and the ends of the shelf 12 may be socketed in rails 14 on the end frames and secured by screwed brackets. In the case of end frames sheathed on both sides by plywood the shelf ends may be notched 44, Fig. 6, to engage the inner sheathing and secured by key-pieces 45.
Patent GB-488588-A (GB)
Title: Flotation apparatus for concentrating ores
IPC: B03D1/16
Filed: 1937-03-05
Abstract: 488,588. Concentrating ores. HOAG, E. H. March 5, 1937, No. 6634. [Class 82 (ii)] A flotation apparatus for concentrating ores comprises an elongated receptacle with impellers therein for pulp agitation wherein the receptacle is divided longitudinally into a plurality of agitation and quiescent chambers, and valve-controlled air-distributing pipes are disposed longitudinally in the quiescent chambers. A steel &c. tank 10 has inclined side walls 11 from which a trough 15 depends, pulp passing from a launder 28 through pipe 29 to the trough; longitudinal partitions 30 form a central agitation chamber divided by transverse partitions 31, and further longitudinal partitions 32 form quiescent chambers 33, 34. Rapidly rotating vaned impellers 16 are arranged in the trough 15 and draw air through their hollow valve-controlled shafts 19, driven by a motor 26, to agitate the pulp. Perforated air supply pipes 35, which may be covered with fabric, are arranged longitudinally of the quiescent chambers and are controlled by valves 38. At the end of the tank is a tailings discharge opening 40 controlled by a slidable gate 41 and surrounded by an open ended casing 42 through which tailings flow upwardly. Concentrates pass over side lips 43 to launders 45 while undesirable material returns below partitions 30 to trough 15. A valved pipe 46 permits discharge of sand &c. A flat plate 48 is arranged above the tank and has baffles 49 extending down into the quiescent chambers.
Patent GB-351510-A (GB)
Title: Process and apparatus for producing electrolytically metals and particularly magnesium
IPC: C25C3/04
Filed: 1930-02-28
Abstract: 351,510. Electrolytic furnaces. JESSUP, A. C., 2, Rue AdÞle, Clamart, Seine, France. Feb. 28, 1930, No. 6666. [Class 39 (iii).] In the production of magnesium in a tank wherein a central anode is surrounded by a number of cathodes, the gyratory movement of the bath drives the metal into parts of the tank wherein it will be protected against the gyratory motion. This is effected by using a polygonal tank which may have corner pockets 2 containing the cathodes and provided with partitions 5. The tank may be lined with heat insulation, the lining being omitted in the pockets to effect cooling thereof. The cathodes may be provided with protective facings.
Patent GB-609045-A (GB)
Title: Improvements in measuring apparatus for measuring high pressures
IPC: G01L7/02
Filed: 1946-03-04
Abstract: 609,045. Linear-dimension gauges. AKTIEBOLAGET C. E. JOHANSSON. March 4, 1946, No. 6707. Convention date, March 3, 1945. [Class 106 (ii)] A gauge for measuring high pressure comprises a steel body 1 recessed at 2 and provided with an axial hole passing entirely through the body. Each end of the body has a bridging member 3, 4 positioned in the hole with three radially extending arms 5. The outer end of each arm 5 is supported by a pin 7 provided with an extension 9 which fits into a recess in the wall. The bridge members 3, 4 serve to transmit the change in dimension of the body 1 to a measuring instrument 11, the zero setting of which is controlled by a hand wheel through worm gear 20, 21 and a feeler projection 15. In order to prevent the change in shape of the body 1 affecting the reading, the pin 7 sits in its bore 8. In a modification, the radial arms are dispensed with and the bridge members are maintained in position by screw springs.
Patent GB-535548-A (GB)
Title: Improvements in and relating to snap fasteners and to installations employing such fasteners
IPC: F16B5/12
Filed: 1940-04-16
Abstract: 535,548. Press-button fasteners. UNITED CARR-FASTENER CORPORATION. April 16, 1940, No. 6844. Convention date, May 17, 1939. [Class 44] The stud-member of a press - button fastener having a hollow body portion slotted to give resilience, has the slots covered with an external layer 14 of latex or other flexible material, or by an internal plug 17 of sponge rubber, or by both, to prevent passage of water, dust or other foreign matter. The stud shown is applied to securing a moulding 1 with inturned flanges 6 to a support 3. Diametrically opposite portions 13 of the flange or base of the stud are bent towards the head to fit within the moulding, as shown. The covering 14 is preferably applied by dipping in liquid latex and is thicker towards the base so that when the stud is snapped into an aperture in the support a water-tight joint is formed between the neck 15 of the stud and the edge of the aperture. As described, the slots extend a short distance into the base of the stud, and a layer of latex 19 is applied to cover the slotted portion of the base.
Patent GB-416417-A (GB)
Title: Improvements in or relating to pressure indicating devices
IPC: G01L7/16
Filed: 1933-03-07
Abstract: 416,417. Pressure gauges. JABLONSKY, B., 19, Belsize Crescent, Hampstead, London. March 7, 1933, No. 6895. [Class 106 (ii).] A press-on connector for use in inflating pneumatic tyres comprises a double valve g adapted to be unseated when the connector is pressed-on and thereby connect the compressedair supply tube b with the tyre valve and also with a chamber v leading to a spring-loaded escape valve l which opens when a predetermined pressure is exceeded. The loading of the spring n for the valve b is adjusted by rotating a cam o, the pressure being indicated by a pointer r. The outlet passage for the escaping air is obstructed by the sharp edge of a rim u on the valve seat k so as to produce a whistling sound. A ball valve may be used instead of the needle valve l.
Patent GB-798176-A (GB)
Title: Device for producing air circulation in motor vehicle air-cooled internal combustionengines
IPC: F01P7/02
Filed: 1957-03-01
Abstract: 798,176. Ventilating vehicles. FIAT SOC. PER AZIONI. March 1, 1957 [March 27, 1956], No. 6954/57. Class 137 [Also in Groups XXVII and XXXI] In a motor, vehicle having a rearmounted (as shown) I.C. engine 4, at engine starting air blown over the cylinders by an engine-driven fan 5 is recirculated via ducts 10, 12, 13 until a normal working temperature is reached which is then maintained by a thermostat 18 which first moves a valve 17 from a position in which it blocks an air intake 15 and then regulates the valve between this position and a position in which it blocks the duct 10, air being discharged at 20 and to a valved pipe 25 leading warm air to the vehicle interior.
Patent GB-493551-A (GB)
Title: Linen goods, especially collars, which can be easily cleaned cold
IPC: A41B3/10
Filed: 1937-03-10
Abstract: A "linen" article, e.g. a collar, consists of an intermediate layer of linen or like fabric (e.g. calico) sandwiched between a pigmented cellulose derivative sheet (or a fabric impregnated with a cellulose derivative) and a transparent sheet of a mixed polymerizate made by the joint polymerization of vinyl chloride and one or more unsaturated monomerides capable of polymerization. The monomerides may be derivatives of aliphatic mono- or di-carboxylic acids, or styrene.  The polymerizate may be made from (parts by weight): (1) vinyl chloride 80, acrylic acid methyl ester 20; (2) vinyl chloride 50-99, maleic acid butyl ester 50-1; (3) vinyl chloride 80, acrylic acid butyl ester 15, styrol 5; (4) vinyl chloride 70, methacrylic acid ester (methyl or butyl) 30.  The pigmented cellulose derivative sheet may be made of (1) the usual camphor-celluloid, or (2) a celluloid made with a substantially odourless.  gelatinizing agent, e.g. an ester of phthalic acid or of phosphoric acid, especially tributyl phosphate, or (3) cellulose acetate or (4) ethyl cellulose. The non-fabric components of the collar may be united to the linen under heat and pressure.