baber/WOPTO huggingface dataset:
Patent GB-1484102-A (GB)
Title: Compact frequency reuse antenna
IPC: H01Q25/00
Filed: 1975-01-29
Abstract: 1484102 Aerials RCA CORPORATION 29 Jan 1975 [6 Feb 1974] 3956/75 Heading H4A A dual polarization aerial arrangement comprises first and second reflectors each shaped as a portion of a paraboloid and formed by a plurality of parallel reflecting elements, the elements of the second reflector being perpendicular to those of the first reflector. The reflectors are disposed one behind the other and partially overlapping, with their focuses separated and their focal axes parallel. Appropriatelypolarized feed elements are located at the focuses. As described, an aerial system 10 is mounted upon a space satellite 11 and comprises two of the above arrangements, shown in Fig. 1 on either side of a central vertical axis of symmetry. The longer edge of each of the four reflectors 12, 13, 15, 17 contains the vertex of the generating paraboloid, i.e., at the points 23a, 25a, 23, 25 respectively. The reflectors are constituted by a plurality of closely spaced parallel wires embedded in a dielectric material plastics base. The wires 27 of the reflector 12 are vertical, and the wires 31 of the reflector 13 are horizontal. The wires 33 of the reflector 15 are horizontal, and the wires 29 of the reflector 17 are vertical. The reflectors are supported on graphite fibre epoxy composite posts 12a, 13a, 13b, 15a, 17a, 17b. Radiating horns 19a, 19b, 19c, 19d are located at the respective focuses of the reflectors 12, 13, 15, 17, each being co-polarized with the reflector it irradiates. Each horn is fed by means of a waveguide (e.g., 59, 61) and has a support member (e.g. 55, 57). The horns may be operated over a wide frequency band by, for example, assigning odd numbered channels to the horns 19a, 19b and even numbered channels to the horns 19c, 19d Any cross-polarized radiation associated with a particular horn will be squinted away by the comparison reflector to the reflector provided for said horn, since it does not originate from the focus of the companion reflector.
Patent GB-878826-A (GB)
Title: Improvements in or relating to circuit protective devices
Inventor: EDMUNDS WILLIAM HAROLD
IPC: H01H9/10
Filed: 1958-02-06
Abstract: 878,826. Automatic circuit-breakers. I-T-E. CIRCUIT BREAKER CO. Feb. 6, 1958, No. 3962/58. Class 38 (5). In a circuit-interrupter, such as that of Specification 783,366, having current limiting fuses arranged in a removable housing, the removal of the housing 30 permits the upward movement of a spring- biased plunger 60 to cause a lever 66 to pivot on a member 67 and by engaging a projection 13 on a trip-bar 10 to trip the circuit interrupter if it has not already been tripped. Until the housing is replaced the lever 66 holds the tripbar 10 in such a position that resetting and reclosure of the interrupter is prevented.
Patent GB-383604-A (GB)
Title: Silencer for internal combustion engines
IPC: F01N1/16
Filed: 1931-02-09
Abstract: 383,604. Exhaust silencers. BAUMGARTEN, P. R. L. VON, 32, Hagagatan, Stockholm. Feb. 9, 1931, No. 4069. Convention date, March 6, 1930. Void [Published under Sect. 91 of the Acts]. [Class 7 (ii).] The silencer, which is particularly adapted for motor cycle engines, has a valved inlet whereby the exhaust is allowed to expand in stages. The exhaust pipe 7 is connected to a cylinder 1 which is divided by a cylindrical casing 2 into chambers a, b. A spindle 3 guided by sets of arms 11, 12 carries valves 4, 5 of which 4 may be fixed to the spindle, and 5 adjustable relatively thereto. The valve 4 is adapted to seat alternately on the neck 14 and on the upper end of casing 2. The valves are normally forced to their higher position by a spring 6. When an explosion occurs, the valves are forced downwardly and exhaust gases enter chamber a. When the explosion ceases, the valves rise and the gases from chamber a enter chamber b to be discharged to atmosphere through outlet 15 when valve 5 is again moved downwardly. In a modification, valve 5 is replaced by a perforated partition.
Patent GB-1306507-A (GB)
Title: Container for liquefied gases under pressure
IPC: F17C1/00
Filed: 1970-01-28
Abstract: 1306507 Storing liquefied gases SOC DEHON SA ANCIENS ETABS JOSEPH PEINTRE 28 Jan 1970 [7 Feb 1969] 4074/70 Heading F4P [Also in Division F1] A container for pressurized liquefied gas has a single opening which for egress of both liquid and gaseous phases is connected to a rectilinear siphon tube 3 having its open end near the container wall opposite the opening, the container being substantially cylindrical so that it may be rolled or tilted to position the open end of the tube 3 above or below the surface of the liquid phase.
Patent GB-366727-A (GB)
Title: Process for the production of camphene
IPC: C07C1/30
Filed: 1931-02-10
Abstract: Camphene is manufactured by heating pinene hydrochloride vapour together with steam to a temperature of 140-250 DEG  C.  The process is carried out by passing the mixture of pinene hydrochloride vapour and steam through a heated pipe system, or over surface catalysts which accelerate the reaction or promote heat exchange, such as kieselguhr, pumice, carbon, asbestos or aluminium phosphate, or over contact substances capable of fixing the hydrochloric acid produced, such as lime, magnesium carbonate, sodium carbonate, calcium carbonate or calcium cyanamide.  In the first two cases the apparatus is advantageously of acid-resisting material, but in the last case a metal apparatus may also be employed.  In examples a mixture of pinene hydrochloride vapour and steam is passed (1) through a glass or quartz tube at 200 DEG  C.; (2) through a glass tube filled with pieces of pumice, at 160 DEG  C.; (3) through an iron tube filled with pieces of chalk, at 160 DEG  C. Specification 10784/07, [Class 2, Acids and salts, Organic &c.], is referred to.  Reference has been directed by the Comptroller to Specification 355,094.
Patent GB-514617-A (GB)
Title: Improvements in or relating to devices giving intermittent illumination
IPC: F01L7/02
Filed: 1938-02-10
Abstract: 514,617. Systems for supplying discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Feb. 10, 1938, No. 4239. Void. Convention date, Feb. 13, 1937. [Class 38 (iv)] A discharge tube 1 is supplied from a condenser C through an inductance L on closure of a switch 2, the condenser C being charged from mains 4, 5 through an impedance 3, the values of the impedance 3, the condenser capacity and the mains voltage being such that the maximum voltage at the condenser is less than three times the operating voltage of the tube 1 so that the latter is extinguished after one flash. The tube 1 may be supplied continously through an impedance 6 with a current which is too small to produce an appreciable illumination therein. When a plurality of discharge tubes are placed in a single circuit arrangement with a condenser and choke starting up is stated to be ensured by placing a suitable resistance in series with each separate tube. A tube may be started by arranging a transformer in parallel and supplying pulses of voltage higher than the starting voltage. The switch 2 may take the form of a grid-controlled discharge device, the grid potential being controlled, for example, with reference to a series of contact marks on a film or disc. The apparatus may be used for recording or reproducing a continuously moving kinematograph film without optical compensating means or for the stroboscopic observation of machine parts.
Patent GB-845040-A (GB)
Title: Improvements in quadrature correction of resolvers and the like
Inventor: WINGET JAMES LYLE
IPC: G08C19/46
Filed: 1958-02-10
Abstract: 845,040. Electric analogue' calculating systems. INDUCTOSYN Ltd. Feb. 10, 1958, No. 4300/58. Class 37. In an arrangement for correcting for small errors in space quadrature of two windings of, for example, a resolver or a position measuring transformer sold under the Registered Trade Mark "Inductosyn", a portion of the voltage in the circuit associated with each winding is transferred to the circuit associated with the other winding the amount transferred being proportional to the tangent of one half the error value. The error value is obtained experimentally. In rotary resolver R1, Fig. 1, wherein windings 1, 2 are fed from sources having impedances Z 1 , Z 2 , the transfer of voltage is affected by an impedance Z 3  which may be purely resistive or may be a complex impedance for phase correction. The correction may be reversed by commoning the other end of the windings. Alternative arrangements for injecting the correction voltage described with reference to Figs. 2 and 3 (not shown) include a series impedance in the common leg, and tapped transformers feeding each winding. The application of the correcting circuit of Fig. 1 to a linear Inductosyn is described with reference to Fig. 4 (not shown). Specifications 801,516 and 801,517 are referred to.
Patent GB-197056-A (GB)
Title: Improvements in and relating to pipe wrenches
IPC: B25B13/50
Filed: 1922-02-14
Abstract: 197,056. Green, P. G., and Dunham, M. T. Feb. 14, 1922. Sliding-jaw wrenches; jaw faces and attachments.-The fixed jaw 11, in line with the handle 10, is provided with an inclined surface which is grooved to receive a sliding gripping face 19 pressed outwardly by a spring 22 enclosed in a cylindrical recess 15 in the jaw and engaging the spherical head 21 of a pin 20 fixed in the face 19 so as to press it against a stop 23. The threaded shank 25 of the movable jaw 30 passes through a slot 27 in the jaw 11 and is adjusted by means of a nut 29 seated in a recess 28.
Patent GB-554321-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B27/46
Filed: 1942-04-01
Abstract: 554,321. Photographic cameras. POWERS, F. T. April 1, 1942, No. 4372. [Class 98 (i)] A photographic camera comprises means for feeding widely varying lengths of sensitive material to a support situated in the exposure position, together with means for moving each length over the surface of the support in order to centre it in relation to the exposure area. In the apparatus shown, the body 1 of a process camera is set in the wall 8 of a dark room, from which the interior is accessible through doors 9, 10. Rolls 13, 14 of different widths of light-sensitive film are carried on shafts extending across the body, and are fed downwardly by measuring rollers 15, 16 operated by external handles, the lengths fed being indicated on external dials. The strips pass between bars 33, 34, with the latter of which co-operates a knife 35 which by means of a handle 37 is drawn across the strip to sever the length which has been fed. Prior to being severed the length is held between a glass plate 38 and a press-board or platen 39. This platen is supported by rollers moving on rails 47, and is moved by means of links 40 connecting it to rocker arm plates 41, 41a connected by links 42 so that operation of the shaft carrying the upper plates 41 causes the links 40 simultaneously to move the platen 39 towards or from the glass plate 38. The pressboard is provided with a sliding panel 50, which is vertically adjustable by rack and pinion means 51, 52 operated by an external handle through universal couplings and a jack shaft 56. A dial indicates the distance the panel is moved down from its uppermost position. At the upper end of the panel is a chamber 64 with openings 65 in the front face of the panel and connected by a flexible tube 66 to a suction fan driven by a motor 68. After the fed length of film, gripped between the platen and the glass plate has been severed by the knife 35 the motor is started so that the suction produced at the openings 65 holds the film to the panel. The platen is then retracted and the panel adjusted on the platen until the cut portion of the film is centered in the exposure area. The platen is then moved forward to press the film againt the glass plate, the motor is stopped, and the slidable panel raised to its uppermost position. After exposure of the film the platen is retracted, allowing the exposed piece of film to fall and a new length to be fed down. In a modification, suction cups sunk in the top of the slidable panel are connected to a cylinder in which a weighted piston moves down to create the suction effect, the piston being raised by a cord-operated lever when the suction is to cease. Specification 367,903 is referred to.
Patent GB-230046-A (GB)
Title: Hydrogen producing apparatus
IPC: C01B3/10
Filed: 1925-02-17
Abstract: 230,046. Soc. L'Oxhydrique Fran- þaise. Feb. 29, 1924, [Convention date]. Hydrogen. - In apparatus for making hydrogen by the iron. steam process comprising elongated chambers in a mass of refractory brickwork, the chambers are provided with outlets leading to branch collecting conduits connected to a common gas main having a general control valve. The outlet or inlet of each chamber may also be provided with a throttle. The chambers or cells 2, Figs. 1 and 2, formed within the firebrick 2a may be lined with sheet iron. Each cell is closed by a metallic head or box 3 having - an emptying plug and gas outlet. A false bottom or grate may also be provided. Gas is introduced by a conduit 1 and its passage through each cell is controlled by valves or throttles 4 in the outlets, which lead to a collecting pipe 5 having a general gas control-valve 6. The furnace has a removable cover 7 having orifices 9 adapted to be closed and the whole mav be enclosed in a metal envelope 8. In a modification the furnace may be partitioned so that the gas after passing through one set of cells passes through further sets of cells in succession, means being provided for reversing the gas stream when desired. The cells may be extended by means of metal chimneys which are enclosed in a casing and are employed as a regenerator to preheat the reducing gases. The latter are circulated between the metal chimneys and after passing through a brick-work regenerator are led to the reaction zone. The cells, which may be glazed, may be oblique or even horizontal.
Patent GB-163441-A (GB)
Title: Improvements in machines for manufacturing concrete blocks and the like
IPC: B28B13/02
Filed: 1920-02-13
Abstract: 163,441. Hooper, H. I. Feb. 13, 1920. Stationary-mould machines; feeding.-In machines for moulding concrete blocks and the like of the kind wherein the material is compressed in a mould provided with a hinged spring-controlled cover by means of a reciprocating plunger, which, at the end of the compression operates a clutch that releases the cover, a wire M is connected to the plunger and by means of a projection N operates a spring-catch H and releases the cover D. Material is fed to the machine in measured quantities from a hopper by means of shelves T', T<2>, Fig. 2, connected by pin-and-slot connections to a lever V, which is operated by a handlever W. The plunger is operated by an hydraulic press or by cams. Specification 138,044 is referred to.
Patent GB-114208-A (GB)
Title: Improvements in and relating to Belt Buckles.
Inventor: GEORGE SAFE
IPC: A44B11/00
Filed: 1917-03-27
Abstract: 114,208. George, S. March 27, 1917. Buckles. - A belt buckle 1 is provided on its lower edge with a longitudinal finger 9, Figs. 1 and 2, or 21, Fig. 5, adapted to be engaged in a loop or to be received in the flap at the front of the trousers, and the rear face of the buckle is provided with a downwardlyextending hinged clamp 11 having inwardly - turned spring jaws 12, 14 adapted to grip the shirt and prevent it from riding up. In the arrangement shown in Fig. 5, the finger comprises a rod 21 adjustable in an eye 20 depending from the buckle frame. In a further modification (not shown), the longitudinal finger is formed by slitting the metal of the buckle frame and bending out the tongue. Modified forms of the clamp 11 are shown.
Patent GB-319180-A (GB)
Title: Improvements in portable turntables for railways
IPC: B61J1/02
Filed: 1929-02-11
Abstract: 319,180. Eichelgr³n, M. Feb. 11, 1929. Turntables.-Portable turntables, with continuous rails and end ramps, have rails which incline upwards from the centre on one or both sides. The ramps 3 continue as inclines 20 which meet inclined portions, preferably curved, merging into the central part, so that the transverse bars 19 are clear of the rails when the table is turned. The turntable may be overweighted by a weight 13 mounted eccentrically or on a swing- ing arm above the pivot 22 or by two balls rolling in grooves on each side of the pivot. The turntable has fixed or pivoted stops 9 to engage between the wheels.
Patent GB-345042-A (GB)
Title: Improvements relating to apparatus for causing a controlled appliance to follow the movements of a controlling device
IPC: G05D3/14
Filed: 1930-02-11
Abstract: 345,042. Control of motors. EVERSHED & VIGNOLES, Ltd. and NEEDHAM, J. C., Acton Lane Works, Chiswick, London. Feb. 11, 1930, No. 4583. [Class 38 (iii).] Following movements of control member.-Apparatus for causing a controlled device to follow the movements of a controlling device comprises two members capable of relative rotation and connected, respectively, to the controlling device and to the controlled device, the latter being arranged to be driven by an electric motor, one member carrying contacts separated by a narrow gap, and the other member carrying a contact adapted in the normal position to bridge the gap, the arrangement being such that any relative displacement of the members causes the motor to drive the controlled device in a direction to follow up the controlling device. In the construction shown, an arm a is maintained in a predetermined plane owing to its connection, through a spindle b, to a gyroscope or pendulum. A toothed disc c is rotatably mounted on the spindle b and is adapted to be driven, through worm gearing, by a direct-current electric motor p. The disc is provided with two contact segments e<1>, e<2>, spaced apart by a narrow gap g, which is normally bridged by a contact roller h carried by the arm a. The segments are connected to resistances k, l which, together with resistances m, n, form a balanced Wheatstone bridge when the roller h closes the gap g. The source of supply is connected to the bridge at o, p, and the contact arm a is connected to one brush q of the motor while the other brush r is connected at s to the junction of resistances m, n. When relative movement between the arm a and the disc c takes place, the roller h is displaced from the gap g and one of the segments e<1>, e<2> is cut out of circuit, so that current is caused to flow through the motor by way of the brushes p, q whereby the motor rotates in such a direction as to maintain the gap g opposite the roller h.
Patent GB-455337-A (GB)
Title: Improvements in or relating to liquid consumption meters
IPC: G01F9/00
Filed: 1936-02-15
Abstract: 455,337. Liquid-meters. TECALEMIT SOC. ANON., 18, Rue Brunel, Paris. Feb. 15, 1936, No. 4671. Convention date, Feb. 15, 1935. [Class 69 (i)] [See also Group XIX] Apparatus for measuring the consumption of petrol over a definite distance or time comprises two chambers 4, 5 separated by a membrane 3 or by a piston, the chamber 4 being connected by a pipe 7 and valve 8 to the petrol tank and by a pipe 6 to the carburetter, while the chamber 5 is connected to a manometer 12 and also, when a valve 14 is opened, to the atmosphere. A switch 23, which is opened periodically by a plunger 22 operated by a cam 21 driven either from a vehicle wheel or from a clock mechanism, controls the circuit for electromagnets 11, 16 actuating the valves 8, 14 in such a way that valve 8 is opened and valve 14 closed for a definite distance or time travelled, valve 8 being then closed and valve 14 opened. During this second phase the carburetter sucks out petrol from chamber 4 and the membrane 3 moves upwards, and during the first phase a volume of petrol enters the chamber 4 equal to the volume of petrol sucked out by the carburetter, and the membrane 3 moving downwards causes the manometer needle 12 to indicate on a suitably graduated dial the rate of consumption of petrol. Should the electromagnet 11 not be working, the membrane 3 is adapted to bear on a tail member 26 on the valve 8 so as to lift the valve. The valves 8, 14 may be actuated mechanically instead of electrically. The manometer may be provided with a second needle indicating the total amount of petrol consumed.
Patent GB-308048-A (GB)
Title: Improvements in the manufacture of resins for lacquers, varnishes, and the like
IPC: C09D161/06
Filed: 1928-02-15
Abstract: 308,048. Imperial Chemical Industries, Ltd., Strafford, N., and Walker, E. E. Feb. 15, 1928. Phenol-aldehyde condensation products; ester condensation and polymerization products. - Resinous compositions suitable for the manufacture of lacquers, moulding powders, and laminated articles are prepared by incorporating a thermo-hardening resin of the phenol-aldehyde type from which free phenols and condensation products of low molecular weight have been removed, for example by the method of Specification 295,514, with a resin of the glycerol-phthalicanhydride type containing a fatty acid, such as stearic or oleic acid or the acids of linseed oil or China wood oil, or containing an oil such as linseed oil or castor oil. Lacquers prepared from such resinous compositions harden rapidly at a temperature of 80-100‹ C. forming films of desirable quality; the drying may be accelerated, and the clearness of the films improved, by addition of an acid catalyst or a drier. The phenol-aldehyde resin is preferably prepared from phenol, or cresols containing a high proportion of m-cresol, and formaldehyde or its equivalent. such as hexamethvlenetetramine, but furfural may replace formaldehyde if the colour of the film is unimportant. The examples describe the preparation of lacquers comprising (1) a resin obtained from glycerol, phthalic anhydride, and castor oil or the acids of linseed oil or China wood oil, (2) a purified phenol-formaldehyde resole, and (3) butyl and ethyl acetates and alcohols, with or without a small amount of alcoholic sulphuric acid or a drier such as cobalt linoleate or tungstate. The application of these lacquers and the properties of the films are described also.