baber/WOPTO huggingface dataset:
Patent GB-815173-A (GB)
Title: Improved method for moulding expandable thermoplastic resinous materials and mouldedarticles thereby obtained
IPC: B29C44/42
Filed: 1957-01-31
Abstract: A method of moulding expandable granular thermoplastic resinous material to form a moulded foam structure comprises charging the granules into the injection chamber of an injection moulding apparatus where they are forced under pressure sequentially into and through a first cold zone to compact a portion of them into a solid granular mass below its foaming temperature, a second heated zone where a portion of the mass is heated to a flowable condition above the foaming temperature, and a discharge zone from which a portion of the heated mass is injected into a mould where it expands to the confining limits of the mould.  The solid compacted portion of the mass in the first zone continuously maintains the heated portion of the mass in the second zone under pressure to restrain foaming therein throughout the intermittent moulding cycles.  The effluence of the heated mass from the discharge zone is arrested, except during injection into the mould, either by means of a valve or by providing between the discharge zone and the mould a restraining passageway with a high pressure drop.  The moulded foam structure may be given an unexpanded surface layer by injecting the material into a cooled mould with an enlargeable cavity, and, after the surface layer has been formed under pressure, relieving the pressure and enlarging the mould to permit the central uncooled heated mass to expand. Suitable resinous materials for use in this invention include styrene polymers and copolymers; vinylidene chloride copolymers; polymers and copolymers of methyl methacrylate, ethyl acrylate, and other derivatives of acrylic acid; polymers and copolymers of vinyl acetate and vinyl butyral; and cellulose derivatives, e.g. cellulose acetate and cellulose nitrate.
Patent GB-585582-A (GB)
Title: Improvements in polymerisable trichlorostyrene and polymers and co-polymers thereof
IPC: C08F12/18
Filed: 1944-02-25
Abstract: Trichlorstyrene is prepared by contacting at elevated temperature chlorethyltrichlorbenzene with activated alumina or "Floridin" (a Registered Trade Mark).  The effective removal of chlorine from the side chain makes the product very suitable for polymerization.  It may be copolymerized with styrene, nuclear alkylated styrene, a -alkyl styrenes, e.g. methylstyrene, halogenated styrenes, vinyl compounds, such as vinyl acetate, vinyl chloride, vinyl naphthalene, halogenated vinyl naphthalene, allyl compounds such as methacrylic and maleic acid allyl esters or dienes such as chloroprene, butadienes and methyl and phenylbutadienes.  The copolymerization may be effected in the form of an emulsion.  Specification 539,667 is referred to.
Patent GB-1490037-A (GB)
Title: Weighing apparatus
IPC: G01G7/04
Filed: 1976-01-29
Abstract: 1490037 Measuring weight electronically METTLER INSTRUMENTE AG 29 Jan 1976 [22 July 1975] 03587/76 Heading G1N A force balance arrangement for use with weighing apparatus includes means for linearizing the relationship between the weight and the measured value of the restoring current. The apparatus comprises a scale pan 12, Fig. 1, supported on a tube 10 for vertical movement in the field of a permanent magnet assembly 20-26. Displacement is measured by a differential capacitor 36, 38 and converted to a proportional current which is fed to restoring coil 32 attached to the lower end of tube 10, through a compensating circuit 44. The displacement voltage signal, amplified at 50, Fig. 2, is compared with a sawtooth voltage whose frequency is controlled by a clock oscillator 56, and a direct current from source 54 is fed to coil 32 for the time in each cycle for the sawtooth voltage to rise from zero to the value of the displacement voltage signal. This interval is measured by clockpulses from oscillator 56, counted at 64 and displayed at 48. The D.C. from source 54 is obtained from a voltage to current converter 74, Fig. 3, connected to a constant voltage source 72 through a network consisting of capacitor 76 and resistors 77-80 whereby the input voltage, and the output current, are reduced during the time that switches 60, 68 are open and coil 32 is energized in a manner to produce linearity between the duration of the current pulses, measured by counter 64 and weights. In alternative arrangements the compensating current in coil 32 is fed to a digital voltmeter through appropriate voltage modifying networks.
Patent GB-102008-A (GB)
Title: Improvements in and relating to Rotors and Casings for Rotary Engines.
Inventor: SPEESE JASPER
IPC: F01C1/44
Filed: 1916-03-10
Abstract: 102,008. Speese, J. March 10, 1916. Fixed - abutment type; packing drums, vanes, &c. -A rotor 6, Fig. 1, carries curved vanes 10 hinged by arms 11 to pivots 12 and working in both outer and inner crescent - shaped chambers A, B formed by the stator parts 1, 2, which are mutually eccentric. Motive fluid is admitted to the chambers by ports 25, 28 for forward working, and ports 25<1>, 28<1> for reverse working, ports 26, 25<1> and 29, 28<1> being connected to the exhaust for forward working, and ports 26<1>, 25 and 29', 28 for reverse working. The main exhaust ports 26, 26<1>, 29, 29<1> are located at a distance from the greatest cross-sectional area of the chambers approximately equal to one-half the distance between consecutive vanes. The vanes are packed as shown, and for packing the points of contact between the rotor and stator, a pair of spring- pressed strips 43, Fig. 9, hinged together and having fluid passages 47 may be seated in the stator. In a modification, Fig. 8, the rotor members 37, 38 carry curved vanes 39 operating in three chambers C, D, E. The rotor member may be made the stator, and the stator member the rotor.
Patent GB-693688-A (GB)
Title: Improvements in or relating to means for supplying air to internal combustion engines for combustion purposes
Inventor: BONE GEOFFREY WILLIAM
IPC: F02B33/00
Filed: 1950-02-14
Abstract: 693,688. Supercharging; cooling charge. DAVEY, PAXMAN & CO., Ltd. Dec. 28, 1950 [Feb. 14, 1950], No. 3748/50. Class 7 (ii). In means for supplying air to an internalcombustion engine a for combustion purposes comprising an air turbine e; whose outlet communicates with the intake manifold of the engine and an air compressor c driven by the turbine e and delivering air through a cooler d to the turbine inlet the compressor c is arranged to receive air from an auxiliary compressor b driven by the engine, or, by a turbine driven by the engine exhaust gases or by driving means independent of the engine a, such as an electric or other motor. not shown. In one modification, an inter-cooler is located between the two compressors, whilst in a further modification, the second compressor is fed by an exhaust actuated turbo-charger. The arrangements provide for lowering the temperature of the charging air to a value' below that of the available cooling medium without reducing the density of the charge. The apparatus may be provided in a self-contained unit capable of connection to any engine. Specification 622,077 is referred to.
Patent GB-585086-A (GB)
Title: Improvements in internal combustion and other high speed, high temperature turbines
IPC: F01D5/06
Filed: 1943-03-08
Abstract: 585,086. Securing turbine discs on shafts. BAUMANN, K., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. March 8, 1943, No. 3763. [Class 80 (ii)] [Also in Group XXVI] A turbine disc 1 of a gas turbine has a ring portion 4 which embraces a flange 2b on the end of the shaft 2. Radial, or nearly radial, taper pins 3 are secured in the ring portion and project into the flange. Cooling air is admitted to the hollow shaft and passes through grooves 2c, 2d. There may be a clearance space between the end of the shaft flange and the disc and between the flange and the ring portion, and the flange may have an annular groove so as to embrace the ring portion. Labyrinth packing may separate the low-pressure cooling air, passing through the mounting from the hollow-shaft, from air taken from the compressor delivery and directed on to the side of the turbine disc.
Patent GB-211491-A (GB)
Title: A concealable hood for an automobile
IPC: B60J7/12
Filed: 1924-02-14
Abstract: 211,491. Kerkhoven, F. van. Feb. 15, 1923, [Convention date]. Roller blinds, spring.-In an automobile having a hood comprising canvas 7, Fig. 1, adapted' to be drawn from a roller 8 in the body, the doors are provided with curtains 11 adapted to be drawn from rollers 11<1> removably housed in the doors, the curtains being supported by pillar members 12<1>, 12<2> which fold down into the door. Side curtains 13, filling the space between the doors, are secured to vertical rollers which can be tilted about or removed from their supports and housed in the body. A roller 18, Fig. 4, for the canvas of the hood or a side curtain, with its spring 19 may be disposed in a casing 17 closed by a fastening 19<1>. In another form the main cover is mounted on a tube 24, Fig. 6, which rotates on members 47a, 52<a> and turns, through bevel gears 45<a>, 50, a sprocket-wheel mounted on a member 47 secured to a fixed tube 26 within the tube 24. The sprocket-wheel moves a chain 58 secured to a cable 27 to which one end of a spring 25 is secured. The side curtains may be mounted on a similar roller, the fixed tube being dispensed with and an endless cable replacing the chain 58 and cable 27.
Patent GB-607530-A (GB)
Title: Improvements in electric induction heaters
IPC: H05B6/02
Filed: 1946-02-07
Abstract: 607,530. Electromagnetic induction apparatus. BLELOCH, W., and HARVEY, A. Q. Feb. 7, 1946, No. 3887. Convention date, June 4, 1945. [Class 39(iii)] In an induction heater a non-ferrous, preferably copper, unbroken continuous sheath is arranged between the ferrous metal to be heated and the induction coil. In a preferred example sheath 23 is placed on to the outside of cylinder 20 of a boiler. The induction coil 25 is heat and electrically insulated by coverings 24 and 26.
Patent GB-289195-A (GB)
Title: Improvements relating to the assembly of units in radio receivers and other electrical apparatus
IPC: H04B1/08
Filed: 1927-02-11
Abstract: 289,195. British Thomson-Houston Co., Ltd., Warren, H. W. H., and Kinman, T. H. Feb. 11, 1927. Receiving sets, construction of.-A unit consisting of a battery or mains supply apparatus is provided on one face with terminal members so that when placed indirect contact with the face of a complimentary unit which comprises a wireless receiver or other electrical apparatus the connections between the units are completed automatically. The Figure shows a two valve receiver A provided with plugs E, F, adapted to engage sockets E<1>, F<1>, on a high tension battery unit B which is provided with plugs G, H, to co-operate with sockets on a low tension battery unit C. In a modification (Fig. 2, not shown) a loud-speaker unit is embodied in the amplifier unit.
Patent GB-285248-A (GB)
Title: Improvements in or connected with spraying devices
IPC: A61M11/02
Filed: 1927-02-11
Abstract: 285,248. Marcus, C. L. Feb. 11, 1927. Direct air-pressure apparaatus, non-automatic. - An atomizer comprises a container 1 for scent &c. having attached to it a chamber 1, formed of two telescoping members 2, 7 the outer one comprising a disc 7 having a convex centre part 8 bearing against a rubber bulb 4 and normally forced into its outer position by a spring 9. The base of the container is concave and the neck 6 of the bulb 4 is received into its nutlet. Air compressed by the bulb forces liquid up a tube 12 and atomizes it at the outlet 13.
Patent GB-720696-A (GB)
Title: Improvements in or relating to chairs, beds and the like
IPC: A47C7/18
Filed: 1953-02-12
Abstract: 720,696. Seats, mattresses. STEVENSON, W. Feb. 12, 1953, No. 3935/53. Classes 52 (2) and 52 (4). The supporting surface of a seat, bed, &c. comprises a frame and a number of straps 16 of rubber or other resilient material connecting the opposed sides of the framework. As shown, the straps 16 are tensioned by means of buckles 14, 15 secured to the framework and are covered by protecting strips 17 of hessian or the like. In the case of beds the straps may connect the opposed ends of the frame as well as the opposed sides. The straps support cushions or the like.
Patent GB-107556-A (GB)
Title: Improvements in Ozone Generators.
IPC: C01B13/11
Filed: 1917-03-20
Abstract: 107,556. Ozonair, Ltd., and Joseph, E. L. March 20, 1917. Gases, treating electrically.-In an ozone-generator, pairs of metal-gauze or like sheet-electrodes 24, Fig. 5, of the same polarity are placed in contact with each other and separated from those of opposite polarity by dielectric sheets 25, within a container such that the air or other gas passes between and along the electrodes, and between these and the dielectric sheets. Multiple arrangements are described. In the construction shown in Fig. 1, a container 12, narrow in a direction at right-angles to the plane of the Figure, and preferable of welded galvanized iron, is provided with a flange resting on the top edge of a cooling tank 10. To the flange is bolted a cover 15 of aluminium or galvanized iron, forming the top member of a removable frame 17, 16, 18 carrying the electrodes. Vertical inlet and outlet tubes 17, 18 form the sides of the frame and are perforated as shown to distribute and collect the gas. The mica or other dielectric sheets 25 extend from the lower side 16 of the frame to a distance piece 28 attached to the cover, and are separated from both by mica or like strips 16<a>, 28<a>. These are clamped by slate or other insulating blocks 34, 33, which also secure the dielectric sheets against movement lengthways of the container. The gauze electrodes 24 are smaller than the dielectric sheets 25 and are cut away at their corners to accommodate the inner corners of small square plates 27 of glass &c. spacing the dielectric sheets. On either side of the assemblage of electrodes and dielectric sheets is a larger mica &c. plate 32, confining the stream of gas. Beyond these plates, and in contact with the container, are metal plates 29 of the same width as the dielectric sheets, attached by screws to the bottom bar 16 of the frame and to the distance piece 28 on the cover. Electric cables 35, 36 are secured to terminals 37 within insulators 39 which extend through the cover. The terminals are connected by conductors 41, 43 to strips extending in opposite directions from the electrodes of opposite polarities. Two or more electrode sets may be secured to the same frame in a container of greater length, so that the gas passes through them successively. When there are two such sets, one conductor enters the space between them and is connected to strips extending from all the electrodes of one polarity. The other conductor, as before, enters one end space and is connected to half the electrodes of the adjacent set, to one of which electrodes is attached a strip traversing the intermediate space and connected to strips on half the electrodes of the second set. A number of containers similar to that shown in Fig. 1 mav be placed parallel to one another in a single cooling tank, with gas supply and take-off pipes, and electric connexions, in parallel. An electric pressure of 4000 volts, and a frequency as low as 25, give good results.
Patent GB-211796-A (GB)
Title: Improvements relating to motor head lights
IPC: F21V11/00
Filed: 1922-11-11
Abstract: 211,796. Cook, W. Nov. 11, 1922. Lantern gratings.-An anti-dazzle screen for motor head-lights of the kind consisting of an openwork frame A formed of thin metal strips crossing vertically and horizontally, has the frame wholly enclosed in a tapered metal rim B which is enclosed within a rubber band or ring C, or provided with springs b riveted or soldered to the rim B, the ring or springs bearing against the inner surface of the lamp when the door is closed. The horizontal strips may be arranged close together and the vertical strips comparatively widely apart and all may be dull black and joined by half-slotting. Either the lamp or the horizontal strips may be inclined downwardly. The ends of the springs b may have rubber pads b<1>. Reference has been directed by the Comptroller to Specifications 153,507 and 166,019.
Patent GB-213542-A (GB)
Title: Improvements in the construction of wheels for road vehicles
IPC: B60B5/04
Filed: 1924-02-18
Abstract: 213,542. Turner, G., and Bishop, J. E. March 26, 1923, [Convention date]. Compression-spoke wheels; tyres, non-elastic, and rims.-The wooden spokes 4 have tongues 5 passing through an inner circumferential metal baud 7 into a wooden felloe 9 which is wide compared with its short radial depth. An outer metal rim 11 is shrunk on, and metal thimbles 6 may surround the tongues 5. The grain of the wood in the felloe mav be transverse to the face of the wheel rim as shown, or the felloe may be formed of bent or shaped wood in the usual way. Dowels 10 may be used to fasten the several separate wooden pieces in the felloe.
Patent GB-1495424-A (GB)
Title: Method for preparing photoconductors for use as target materials for camera tubes
IPC: G03G5/08
Filed: 1975-01-30
Abstract: 1495424 Photoconductive silver sulphide RHODE ISLAND REGENTS FOR EDUCATION BOARD OF 30 Jan 1975 [30 Jan 1974] 4019/75 Heading C1A [Also in Division H1] A photoconductive form of silver sulphide is prepared by reacting an excess of silver cations in aqueous acidic solution, with an organic sulphur compound at 0-15 C., to form a microcrystallite suspension of #-silver sulphide, reacting excess cations in the reaction solution with an inorganic source of sulphide ions to provide for overgrowth of silver sulphide on the microcrystallites, and recovering the photoconductive silver sulphide. Suitable organic sulphur compounds include thioacetamide and thiourea; the inorganic sulphide source is preferably hydrogen sulphide or sodium sulphide. As an alternative, the microcrystallite may be removed from the aqueous system, washed, introduced into a second aqueous acidic solution containing water-soluble salt of a metal other than silver and a source of sulphide ions (e.g. nitric acid, zinc nitrate and thioacetamide). The photoconductive composite sulphide particles so produced may be bound to a transparent photoconductive surface with a binder layer of epoxy resin to form a target. A suitable surface is glass or plastic coated with tin oxide particles. Camera tubes prepared with this target are characterized by a photoresponse in the visible and near IR region to about 1À6 Á at room temperature.
Patent GB-962204-A (GB)
Title: Bearing assembly
Inventor: KEEN JOHN MICHAEL STORER
IPC: F16C33/66
Filed: 1963-01-31
Abstract: 962,204. Bearings; lubricating. ROLLSROYCE Ltd. Jan. 31, 1963, No. 4125/63. Heading F2A. A roller bearing 17, for a rotating shaft 16, comprises ball-bearings 20 mounted in a cage 21 and includes an outer race 23 and a two-part inner race 24. The bearing is lubricated by oil from a sump 34 which flows through an orifice 35 and drips on to the bearing from a lip 36. The oil is then collected in a sump chamber 41 from where it flows through passages 46, 47 to a groove 45 formed on a surface 43 inclined to the shaft axis. A member 26, rotatable by the shaft 16, has an inclined surface 44 close to the surface 43 whereby relative rotation between these parts causes the oil to rise up the groove 45 from which it is delivered to a groove 22 on the bearing cage 21. The oil is recirculated from the groove 22 to the balls 20 by way of passages (not shown) inclined to the axis of rotation.
Patent GB-566766-A (GB)
Title: Improvements relating to the treatment of wood
IPC: B27K5/00
Filed: 1943-03-15
Abstract: 566,766. Treating wood. RUSSISHVILI, R. March 15, 1943, Nos. 4200 and 13622. [Class 145 (ii)] [Also in Group VIII] Wood is treated to remove most of the hemicelluloses by treatment with a heated solution of sodium hydroxide or carbonate, or both, or with a solution of sulphuric acid, is impregnated with a resinoid substance, and is subjected to 'pressure. A small part of the cellulose and the greater part of the lignin may be modified. The wood may be treated under pressure at 100‹ C. for 2 to 4 hours with an aqueous solution of sodium hydroxide and sodium sulphite or of sodium carbonate and sodium sulphite, or of sodium hydroxide, carbonate, and sulphite. The wood is then washed and dried, or first treated with hypochlorite solution containing 2 to 9 grains of active chlorine per litre and then washed and dried. Part of the modified lignin may be removed by a further treatment with a weak alkaline solution containing an oxidizing agent such as sodium peroxide or perborate. The wood may be first treated in the sodium hydroxide or carbonate solution, then in a slightly acid solution containing free chlorine, optionally in an alkaline hypochlorite solution and then in a weak alkaline solution which may contain oxidizing agents. Alternatively, the wood may be treated with aqueous sulphuric acid at from 7 to 25‹ C., then in the sodium hydroxide or carbonate solution, and then washed and dried. The acid treatment may, alternatively, be carried out in an aqueous sulphuric and nitric acid bath at 75-100‹ C. for 1 to 2.5 hours, and after washing the wood is treated with alkaline solutions containing sodium hydroxide or carbonate, or both, and optionally peroxides. Treatment with hypochlorite solutions may follow. The treated wood layers may be made into plywood by bonding with synthetic resins or other adhesives and before bonding, are impregnated with resins or adhesive emulsions. The plywood may comprise one or more layers of treated wood and one or more layers of untreated wood. Plywood itself may be treated according to the invention. Logs may first be treated with the alkaline solutions and cut into veneers before the further treatment. Treated wood panels may be pressed into desired shapes.
Patent GB-773697-A (GB)
Title: Method for producing dimethyl sulphide
Filed: 1955-02-14
Abstract: Dimethyl sulphide is produced by passing a mixture of methanol with hydrogen sulphide or methyl mercaptan, at a temperature within the range 280 DEG  to 475 DEG  C., over a catalyst consisting substantially entirely of aluminium oxide.  The catalyst may consist of pure, commercial or naturally occurring aluminium oxides or bauxite.  The catalyst may be precipitated on a carrier such as fuller's earth, kieselguhr, pumice, active carbon and bleaching earth.  The reaction may be effected at atmosphoric, increased or reduced pressure and an inert gas, e.g. nitrogen, may be used as a diluting agent.  The molar ratio of methanol to hydrogen sulphide may vary from 0.65 to 3.0 but is preferably between 1.0 and 1.6.  A suitable apparatus is described comprising an electrically heated furnace containing catalyst and surrounded by asbestos.  The products leaving the furnace are cooled and collected in an ice-cooled receiver which is followed by wash-bottles containing lye to take up excess hydrogen sulphide and mercaptan formed.  The methyl mercaptan may be isolated and re-used in the process.  Detailed examples are furnished in which the catalyst is pure or commercial aluminium oxide and comparative examples illustrate the use of mixtures of aluminium oxide with ferric oxide and thorium oxide.
Patent GB-575221-A (GB)
Title: Improvements relating to the manufacture of cycle and like wheel hubs
IPC: B23B31/00
Filed: 1944-03-08
Abstract: 575,221. Lathe &c. centres. BRITISH HUB CO., Ltd., and PIZZEY, W. L. A. March 8, 1944, No. 4284. [Class 83 (iii)] In machining the cast hubs 5 of bicycles &c. having hardened bearing cups 4 secured therein, the central apertures of the cups are formed non- circular to engage a centre 6a on a lathe mandrel 6 so that the hub will be driven during machining. The centre and apertures may be hexagonal, elliptical, D-shaped or of other shape and the centre may be integral with the mandrel as shown in Fig. 1 or may be formed on a plunger 6b, Fig. 3, slidable in the mandrel or centre 6 and pressed outwardly by a spring. 9 and guided by a crosspin 10 and slot 6d. The other end of the hub is supported by a tailstock centre 8 of usual construction,