baber/WOPTO huggingface dataset:
Patent GB-1081130-A (GB)
Title: Improvements in modulation systems
IPC: H03C1/60
Filed: 1965-12-20
Abstract: 1,081,130. Modulating systems; automatic frequency control systems. GENERAL ELECTRIC CO. Dec. 20, 1965 [Jan. 4, 1965], No. 53865/65. Headings H3A and H3R. The output of a single sideband modulator 1 is amplitude limited and fed to a phase detector 20 controlling the frequency of an oscillator 14 feeding the transmitting aerial 16 through a class C power amplifier 15. The system has the bandwidth of a single sideband system, but since amplitude variations are suppressed and class C amplifiers are used the system has the efficiency of frequency modulation; the receiver may be a standard single sideband receiver. Single sideband modulator.- Signals from a microphone 3 are limited to a band from 300-3000 cycles by a filter 4 and fed through amplifier 5 to a balanced modulator 6 supplied with a carrier frequency fo from a crystal oscillator 7. The upper sideband is selected by a filter 8 and passed through amplifier 10 to the limiter 9 which is driven to full limiting. A part of the output of oscillator 7 is fed to limiter 9, and is swamped by the modulation signal when present; when there is no modulation the carrier is transmitted to suppress noise at the receiver. Phase-locked output loop.-The oscillator 14 has a nominal carrier frequency fc, and the output of amplifier 15 is fed to a balanced modulator 17 supplied with a carrier fr = fo - fc synthesized from a crystal oscillator 18. The output of modulator 17 is of the same frequency range as the output of modulator 1, and forms the other input of a phase detector 20. The error voltage from detector 20 is fed through a network 21 to control the frequency of oscillator 14. The network 21 is designed so that the A.F.C. loop responds at frequency rates between 300 and 3000 cycles but not at lower or higher rates; the loop thus acts as a filter and excludes undesired harmonics.
Patent GB-1450779-A (GB)
Title: Gears
IPC: F16H47/08
Filed: 1973-11-21
Abstract: 1450779 Change-speed and reverse gear MATRAL 21 Nov 1973 [18 April 1973] 53932/73 Heading F2D Planetary change-speed or reverse gear, for handling equipment such as lift trucks and vehicles, comprises two sun-ring-planet trains, one, in the ease of a reverse gear, with intermeshed planets, and having suns 17, 18 keyed to an input shaft 15 driven through a torqueconverter 4, planets 19, and 19a, 26, carried by an output shaft 24, and ring gears 20, 29, which can be selectively braked for forward or reverse or different ratios by hydraulic pressure controlled by electromagnetic valves 750, 760, to act on annular pistons 41, compressing interleaved brake discs 25, 31, splined alternately on the respective ring gears and on axial projections from a central disc 32 bolted to the fixed casing 1, the ring gears 20, 29 floating radially and being centred only by the planet pinions, their axial location being effected by contact of their concentrically grooved faces with radially grooved lubricated facings 47, 48 in the fixed casing. The actuating pistons 41 are opposed by springs 40 acting on presser plates 36 which slide on pins 37. Two levels of hydraulic pressure are provided, low for inching and high for normal use. A gear pump 13, driven by the torque-converter impeller 4, feeds a line 58, 581, 583, leading to a shift valve 530 and a pressure regulator 500, the latter loaded leftwards by a spring 590, and rightwards by line pressure acting in the end chamber 600, alone for high pressure, or, assisted by line pressure acting in a chamber 810, for low pressure, when an electromagnetic valve 820 is energized to block exhaust from the chamber 810. In the shift valve 530 pressure fed to a central chamber 660 reaches each end of a spring centralized valve spool 690 through central drillings 670, 680. When free exhaust from either end chamber is blocked by selectively-energizing an electromagnetic valve 750 or 760, the consequent build up of pressure at that end shifts the valve spool to the opposite end, pressurizing one or other of two chambers 780, 790 leading to the respective brake cylinders. Suction and pressure filters 300, 400, are provided.
Patent GB-1121991-A (GB)
Title: An improved unit for linings to furnaces and the like
IPC: F27D1/04
Filed: 1966-12-03
Abstract: 1,121,991. Furnace lining block. B. J. WILCE. 3 Dec., 1966, No. 54204/66. Heading F4B. A furnace lining block is of hexagonal crosssection, and may have recesses and projections on alternate side walls to facilitate assembly, Fig. 4 or may have holes to receive tensioning wires. The end face of the block may be formed as a projecting pyramid, or the block may be tapered so as to enable arched or dome-shaped roofs to be formed. The end of the block may have a metal or ceramic hangar, and a row of at least two blocks may be formed as a single unit, Fig. 8.
Patent GB-1406099-A (GB)
Title: Manufacture of false teeth
IPC: A61C13/09
Filed: 1972-11-24
Abstract: 1406099 Casting dental parts C PETRO and A GLISE 24 Nov 1972 [25 Nov 1971] 54344/72 Heading B3F [Also in Division A5] A core for a false tooth is made by selecting a prefabricated piece 1 of a heat-removable material shaped to complement the crown of a tooth, embedding the piece 1 and a heatremovable riser in plaster, heating the plaster to remove the piece 1 and the riser, and pouring molten material into the resulting cavity to produce the core on cooling. The pieces 1 may have various shapes and may be solid or hollow and have an exterior which is smooth or provided with gripping asperities. The molten material may be gold.
Patent GB-1162698-A (GB)
Title: Quartz Window Assembly in a System for Quantitative Determination of the Concentration of Vapours in a Carrier Gas, and Method of Making the Assembly
Inventor: VERHEYDEN LUC
IPC: G02B7/02
Filed: 1966-12-05
Abstract: 1,162,698. Uniting quartz to metal. EUROPEAN ATOMIC ENERGY COMMUNITY. 5 Dec., 1966 [20 Dec., 1965], No. 54361/66. Heading C1M. A quartz viewing window 2 (for a gas analysis apparatus) is soldered into an Fe-Ni-Co alloy tube 1 by a suitable wire of Ni having a sheath of Ag-Cu alloy under vacuum conditions. The angle 7 must be 10-20 degrees to the normal of the principal axis of the tube.
Patent GB-1294696-A (GB)
Title: Improvements in motorised conveyances
Inventor: BRUCE JOHN W
IPC: A61G5/06
Filed: 1969-11-07
Abstract: 1294696 Vehicle undercarriages; motor vehicles J W BRUCE 7 Nov 1969 [7 Nov 1968] 54721/69 Headings B7D and B7H A motorized conveyance e.g. a wheelchair, has wheels and a pair of endless belt traction assemblies in an arrangement such that the assemblies can occupy a first position out of contact with the ground whereby the conveyance is supported by the wheels and a second position in contact with the ground whereby the conveyance is supported on the assemblies As shown. a motorized wheelchair having side wheels 2a, 2b is provided with a pair of laterally spaced endless belt traction assemblies 17, 18 each comprising a flexible toothed belt 12, a plurality of idlers 22-26 engaging the lower run of the belt, and a pair of drive sprockets 21, 27. These sprockets, together with a further sprocket 28 are mounted rotatably on respective shafts 33, 16, and 29 extending between the two assemblies. Each assembly comprises two portions 19, 20 pivotable about their common shaft 16. An hydraulic piston- and-cylinder arrangement 14 acting between the frame of the chair and shaft 16 is capable of lifting shaft 16 to a raised position such that the chair is supported by and movable by means of its side wheels. Piston-and-cylinder arrangements 35, 42 act between the shafts 33 and 29 respectively to pivot their associated portions. 19, 20 about shaft 16. For negotiating obstacles the chair is supported on the endless belt assemblies, and is movable thereby, the wheels being held clear of theground. A pair of motors 6a, 6b are provided for driving the chair. Each motor has a pinion 30a or 30b engageable with a gear 32a or 32b on a respective wheel, and disengageable therefrom for manual propulsion. Each motor shaft also has a belt-and-pulley drive to the drive sprocket 27, there being a similar drive from shaft 16 to shaft 33. In the raised position of shaft 16 the belt is slack. The chair has emergency brakes 50a, 50b. Hydraulic fluid for the brakes and piston-and-cylinder arrangements is supplied under the control of hand levers which may be mounted on lateral arm-rests of the chair or a single control panel. Actuation of the brakes simultaneously causes de-energization of the drive motors; the latter are controllable independently of each other.
Patent GB-1417874-A (GB)
Title: Process for the preparation of a 4-bromophenylurea derivative
IPC: C07C275/30
Filed: 1973-11-28
Abstract: 1417874 4-Bromophenylurea derivatives INSTYTUT PRZEMYSLU ORGANICZNEGO 28 Nov 1973 [1 Dec 1972] 55101/73 Heading C2C 4-Bromophenylurea derivatives of Formula I in which R 1  represents a halogen or hydrogen atom or an alkyl or alkoxy group, R 2  represents hydrogen or an alkyl group and R 3  represents an alkyl or alkoxy group, are prepared by brominating a corresponding phenylurea derivative unsubstituted in the 4-position in a medium containing an emulsion of a water-immiscible organic solvent and water. The bromination is carried out by treatment with bromine. Preferably an oxidizing agent, e.g. hydrogen peroxide, or a permanganate, chromate, dichromate, hypochlorite, chlorate, perchlorate, hypobromite, bromate or perborate of an alkali or alkaline earth metal, is added to the reaction mixture to oxidize the hydrogen bromide fount. An emulsifier may also be present. Suitable organic solvents are, for example, chlorobenzene and ethylene dichloride.
Patent GB-552530-A (GB)
Abstract: 552,530. Rotary distributers. BENDIX AVIATION CORPORATION. Oct. 8, 1941, No. 13016. Convention date, Oct. 8, 1940. [Class 38 (v)] In a radio-shielded ignition distributer, a circle of contacts 59 which pass through a metallic partition in a metal casing and are connected to the sparking plugs, is fed by high tension current from one of two electrodes 51, 52, on a rotatable member 38, the electrode 51 being the one used during "running" and being supplied by current delivered to a central contact 43 and the electrode 52 being used for " starting " and being supplied by current from another or " booster source to a contact ring 47. The contacts 43, 47 are connected to contacts 45, 49 arranged in passages passing through the block 38 and the contacts 45, 49 are connected to the electrodes 51, 52 by lengths of cable 55 with coil spring 56 at each end arranged in coaxial passages in another block 39. The block 38 may be rotated through 180 degrees relative to the block 39 so that if desired the contacts 45, 49 may be connected to the contacts 52, 51 respectively for use with reverse rotation of the distributer. The block 38 may also be angularly adjusted for timing purposes relatively to a driving wheel 22 by loosening a nut 36 and then suitably rotating the parts which are connected to each other by a coupling consisting of two sets of co-operating ratchet wheels, one set of wheels having one more tooth than the other. The casing is ventilated by a curved sloping tube 70 open at one end to the casing and at the other end to the atmosphere. Specification 540,618, [Group XXXVI], is referred to.
Patent GB-1300283-A (GB)
Title: Constructional building kit
Inventor: CORNELL CECIL
IPC: A63H33/10
Filed: 1970-11-20
Abstract: 1300283 Prefabricated building units C CORNELL 20 Nov 1970 55383/70 Heading E1A A building kit of parts, for erecting for example a fishing or beach shelter, see Fig. 3 (not shown), comprises a set of panels 4 each with at least one pair of opposed bulbous edge portions 5 and a set of elongate locking elements I each with a cruciform arrangement of slots 2, 3 to receive the said panels. The building components may be made of P.V.C. and the panels provided with bulbous edge portions integrally formed thereon or frictionally or adhesively attached thereto, see Fig 4 (not shown) and also Fig. 5 (not shown) for a modified arrangement of triangular shaped panel.
Patent GB-1292139-A (GB)
Title: Signalling arrangement
IPC: G08B5/38
Filed: 1969-11-13
Abstract: 1292139 Visible signalling-apparatus SIEMENS AG 13 Nov 1969 [14 Nov 1968] 55732/69 Heading G4F In a signalling arrangement for indicating actions detectable by signalling contacts, pilot lamps are connected to such signalling contacts to give a flashing signal when the respective contacts are closed, which signal is converted into a steady light by depression of an acknowledgement key when the signal has been noted, and this steady light is maintained as long as the contacts are closed. The arrangement comprises one or more signalling units M (i.e. M1, M2 ...) each comprising a pilot lamp 12 and a relay R having two stable positions and two relay windings connected together at one end. One relay winding may be connected to one pole P of a continuous-voltage source through signalling contacts MK1, MK2 . . . and a capacitor 6, and the other to the pole P through a capacitor 8 by means of an acknowledgment contact qu common to all the signalling units M, while the ends of the windings which are connected together are also connected to the other pole N of the continuous-voltage source. Each pilot lamp 12 is so connected in series with contacts r1 of a relay R that when the signalling unit is in the inoperative state (as shown), the pilot lamp 12 is connected to the signalling contacts MK and the capacitor 6 and, when the unit is in the operative state, the pilot lamp 12 is connected to a flashing-voltage source BL. Contacts r2 of the relay R are connected in series with a capacitor 3 to a horn bar HS, so that a horn Hn is set in operation simultaneously with the actuation of the relay R. When the signalling contacts MK close, a current pulse passes through the capacitor 6 and the 1.h. winding of the relay R which is thereby changed over into its operated position, so that the pilot lamp 12 is connected to the flashing-voltage source BL. Simultaneously, the change-over of the contacts r2 causes a current pulse to be applied to the horn relay H through the capacitor 3, the horn Hn being energized by the contacts h1 of the relay H until the key ha is depressed. When the operator has recognized the signals, he depresses the acknowledgment key qu common to all the units M so that a current flows through the capacitor 8 and the r.h. winding of the relay R which thus changes back into its " unoperated " position, and the pilot lamp 12 is connected to the signalling contacts MK through the contacts r1 and a diode 11. Depending upon whether or not the signal persists, the lamp will light up with a steady light or be extinguished.
Patent GB-1416326-A (GB)
Title: Prosthetic appliance
IPC: A61F2/32
Filed: 1972-12-01
Abstract: 1416326 Hip-joint prosthesis CERAVER 1 Dec 1972 [3 Dec 1971] 55735/72 Addition to 1334584 Heading A5R A prosthesis hip-joint as in the main patent, in which the improvement comprises providing two anchoring studs 15, 18 projecting from the bone-contacting surface 17 of the acetabular member 11, the studs 15, 18 projecting along axes 00' and XY which are perpendicular to the equatorial plane of the hemispherical surface 17. Further studs may be provided and at least one stud may be integrally formed with the acetabular member 11.
Patent GB-1331188-A (GB)
Title: Buildings incorporating terrace floor constructions
IPC: E04D13/16
Filed: 1971-12-01
Abstract: 1331188 Terrace floors of multi-storey buildings O SELVAAG 1 Dec 1971 [1 Dec 1970] 55846/71 Heading E1A The terrace floor 1 of a multi-storey building of stepped configuration, has a layer of thermal insulation 5 beneath it and a water proof sheet 6 which overlies the layer 5 and extends from an external wall 5 and a gap between the floor 1 and an internal floor 3 to a lormier 9 on a lower external wall 4 whereby storm water entering the gap between the floors 1, 3 can be discharged through a gap 7 between the members 1, 5 to a lower terrace level. The floor 1 is supported by cross walls and sheets 6 of adjacent terrace floors overlap the said cross walls as depicted in Fig. 2 (not shown).
Patent GB-560471-A (GB)
Abstract: 560,471. Adjusting wireless apparatus. PHILIPS LAMPS, Ltd., and RICHARDS, C. L. Oct. 1, 1942, No. 13779. [Class 37] The tuning element of a radio receiver is driven by a cord 4 from a pulley 3 mounted on a vertical shaft 2 journalled in the fixed framing and itself driven by a cord 13 and pulley 12. A metal plate 1 mounted to swivel on the shaft 2 supports a rod 5 in bearings 6, 7 pressed up from the plate. The cord 13 is coiled at its ends in opposite directions on the rod 2 and is guided by pulleys 10, 11 to the pulley 12. A coarse adjustment of the shaft 2 is given by swivelling the plate 1 about the shaft 2, and a fine adjustment by turning the rod 5 on its own axis, the knob 8 serving for both adjustments. The plate 1 carries a pressed-up pointer 14 moving over a fixed scale 15, and is also provided with a spring-controlled arm 21 carrying a pin 25 which clicks into one or other of a series of notched plates 20. These plates are adjustably secured in a slotted arcuate member 16 and their notched faces are set at different levels to enable them to be set closely to each other at points corresponding to desired stations.
Patent GB-1204760-A (GB)
Title: Process for reacting a phenol with an epoxy compound and resulting products
Inventor: DANTE MARK FRANKLIN
IPC: C08G65/26
Filed: 1968-12-05
Abstract: 1,204,760. Phenyl hydroxy ethers. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 5 Dec., 1968 [7 Dec., 1967], No. 57859/68. Heading C2C. [Also in Division C3] Phenyl hydroxy ethers are prepared by reacting a compound having at least one epoxy group per molecule with a compound having a least one phenolic hydroxyl group in the presence of a phosphonium halide of formula where R 1 , R 2 , R 3  and R 4  are monovalent hydrocarbon groups and X is a halogen atom. The phosphonium halides may be premixed with the epoxy components to form stable precatalysed compositions which may be stored prior to reaction with the phenol component. Mono- or polyhydric phenols may be used and mono- or polyepoxides. The phosphonium halides are prepared by reacting a phosphine of formula R 1 R 2 PR 3  with a halide of formula R 4 X.
Patent GB-579306-A (GB)
Abstract: 579,306. Frictional igniters. WILLMOTT, A. R. Feb. 27, 1945, No. 4929. [Class 75 (iii)] A gas lighter such as is used with gas cooking ranges has an inner housing 4 in which a pyrophoric element 8, Fig. 3, is detachably mounted, this housing 4 being itself detachably mounted in an outer housing 3 so that it may be removed when the gas cock 2 is in the "off" position. The pyrophoric strip 8 is held in the housing by a split sleeve pressed into gripping engagement with the strip by a screw 10 in a boss 11 which projects through a slot 12, Fig. 2, in. the outer housing. The inner housing 4 is normally held in the outer housing 3 by a gapped spring ring 13 but when the gap is moved to coincide with the slot in the outer housing (as shown in dotted lines in Fig. 3), the inner housing may be withdrawn. Alternatively the inner housing may be held by the engagement of a screw passing through the wall of the outer housing. The rod 1, which has a flange so that it may be held by a stirrup 7, has a lip at its upper end to rub against the strip 8 as described in Specifications 406,473 and 455,100.
Patent GB-1389817-A (GB)
Title: Radar systems
IPC: G01S7/28
Filed: 1969-11-27
Abstract: 1389817 Radar; aerials EMI Ltd 15 Oct 1970 [27 Nov 1969] 58150/69 Headings H4D and H4A In a radar system, the effects of jamming signals are reduced by maintaining a null in the beam pattern directed towards the jamming source. In one embodiment, as shown, for use against a single jammer, the aerial comprises two parts 1a, 1b each of N elements. The beam pattern is scanned mechanically or electronically in a normal mode in the absence of jamming signals. When such signals are detected stepwise scanning, with a sidelobe directed towards the source, is effected, a phase shift # being produced between the returns from the aerial parts by circuit 3. The effect of varying phase # upon the shape of the main beam is variable, but since # is rotated to keep a null on a substantially fixed jamming source, the overall effect is to weight the radar returns in azimuth with a cos<SP>2</SP> wave having an angular period between adjacent nulls of approximately 2/N in the vicinity of the main lobe. The differential phase # is set by servo 4 whose action is inhibited during the "receive" period of the radar and accomplished during the "dead" period; the servo determines a mean value of # by a perturbation technique. Preferably, also, # is set to zero during a "transmit" period of the radar. In another embodiment (Fig. 2, not shown) for use against two jamming sources the aerial has four parts arranged in pairs. Three phase shifters (15, 16, 17) are provided and operated by two servos (18, 19) so that each servo locks on to one of the jamming sources. For use against a larger number of jamming sources, further sub-divisions of the aerial and further phase shifters and servos are provided. In an alternative to aerial partitioning, "dovetailing" of aerials can be used. Nullsteering may be provided by dividing up the aerial array in any binary manner so that the two parts at each division have the same polar diagram and differ only in the positions of their phase centres.
Patent GB-1216399-A (GB)
Title: Copolymers of diallyl ammonium compounds
Inventor: HOOVER M FREDERICK
IPC: C08F226/04
Filed: 1968-12-09
Abstract: 1,216,399. Quaternary ammonium salts. CALGON CORP. 9 Dec., 1968 [15 Dec., 1967], No. 58305/68. Heading C2C. [Also in Division C3] Diallyl ammonium compounds of the formula where each R is an allyl group, A is a C 8-22  fatty group and B is a C 1-4  alkyl group are obtained by reacting allyl chloride with the long chain amine and quaternizing the tertiary amine obtained with a C 1-4  alkyl halide. In examples, allyl chloride is reacted with octyl-, dodecyl- or octadecyl-amine and the product quaternized with methyl chloride.
Patent GB-1211099-A (GB)
Title: Bricks and road pavements composed of such bricks
Inventor: MEIJDEN ANTONIUS JOHANNES VAN
IPC: E01C5/00
Filed: 1967-12-22
Abstract: 1,211,099. Pavings. A. J. VAN DER MEIJ- 'DEN. 22 Dec., 1967 [23 Dec., 1966], No. 58408/67. Heading E1B. A pavement comprises bricks 1, 2, 3 having parallel ribs and grooves along each upstanding sidewall and edge rib sides 12 and 13 parallel to the main vertical cross-sectional planes of the brick and of a height equal to half the rib height, which also equals half the height of the teeth. The bricks have a flattened portion 14 equal to the teeth pitch at the middle of each longitudinal side wall. The upper main surface 7 of the brick is bevelled at 15 to merge smoothly into the tops of the ribs.
Patent GB-1172670-A (GB)
Title: Heat Curable Pressure-Sensitive Adhesive Composition.
IPC: C09J121/00
Filed: 1967-12-27
Abstract: 1,172,670. Pressure sensitive adhesive coating. JOHNSON & JOHNSON. 27 Dec., 1967 [27 Dec., 1966]; No. 58679/67. Heading B2E. [Also in Division C3] A pressure sensitive adhesive tape comprises a polyester or treated paper backing and, coated thereon, a solution of an adhesive consisting of 100 parts by weight of a diene elastomer, 20-500 parts by weight of a compatible tackifier, 5-40 parts by weight of an oil-soluble heat and elastomer-reactive bromomethyl alkylated phenol formaldehyde curing resin, and 5-25 parts by weight of zinc resinate curing accelerator. Suitable elastomers are natural rubber and SBR, and the tackifier may be poly #-pinene. The composition may also contain zinc dibutyl dithiocarbonate and phenolic antioxidants.