baber/WOPTO huggingface dataset:
Patent GB-1533984-A (GB)
Title: Electrical circuit arrangements for generating modulation
IPC: H03C5/00
Filed: 1976-01-07
Abstract: 1533984 Calibrating measuring instruments RACAL DANA INSTRUMENTS Ltd 7 Jan 1976 [29 April 1975 3 July 1975] 17659/75 and 27972/75 Heading G1U A modulation generating signal includes means for selectively providing an A. M. or F. M. modulated carrier signal, with a calibration means for selectively providing a time varying modulating signal or a fixed modulating signal. The arrangement shown provides a signal having precisely determined levels of frequency or amplitude modulation, for feeding to modulation measuring apparatus (e.g. as disclosed in Specification 1509913) for calibration. For amplitude modulation, the switches 15, 26 and 65 are set as shown. Oscillator 10 is set to a required modulating frequency by switch 12 and the switch 20 set to feed the negative peak signal via attenuator 21 (set at OdB) to the modulating input of amplitude modulator 66. Voltage controlled oscillator 28 is set by control 30 to produce a 0.6MHz signal which is converted in a phase-lock loop 42, 44, 46 to 10.6MHz the signal passing via switch 65 to the carrier input of modulator 66. By adjusting attenuator 14B, the peaks of the modulating signal is adjusted such that the D. C. applied to the modulator represents a level of 100% negative modulation and the output 70 is thus zero. By switching switch 20 to feed the modulating signal direct to attenuator 21, an amplitude modulated 10.6MHz signal is available at output 70, the level of modulation being precisely determined by attenuator 21 (OdB#100%). For frequency modulation, switch 15 is set to 14C, and switch 26 to its other position. Here, the phase-lock loop provides a carrier varying with the frequency of voltage controlled oscillator 28 which is fed with the modulating frequency signal via switch 26. By setting the switch 20 to select negative or positive peaks of the modulating signal, the maximum and minimum excursions of the carrier frequency are set by attenuator 14C and the centre frequency is set by switching 20 to its illustrated position. For either mode, switch 65 may be altered to provide a low value carrier frequency.
Patent GB-258971-A (GB)
Title: Improvements in or relating to valves or cocks for use on miners' safety and like lamps
IPC: F24C3/04
Filed: 1925-07-13
Abstract: 258,971. Woosnam, R. L., Woodhead, D. W., and Wenham, D. July 13, 1925. Valves and cocks, applications of.-In a miner's safety lamp burning a gaseous fuel, such as acetylene, and having a re-igniting device, the gas tap is provided with a locking device which will allow the tap to be turned for regulating the flame but will automatically lock the valve when it has been turned to the closed position. The locking device is placed in a position inaccessible excepting to an authorized person at lighting station or office. In the forms shown in Figs. 1 and 3 the tap 23 is locked by a spring or gravity lever catch 24 engaging ratchet teeth 19 on the tap spindle, as shown, the top end 24 of the catch projecting into the burner chamber 13. A form is shown in Fig. 6 in which the tap is controlled by rotating a disc 32 provided with a flange 35 forming a sealed chamber in! which is disposed a spring-pressed plunger catch 33. When the catch 33 has once engaged its locking recess, in the closed position of the valve, it cannot be withdrawn except by an authorized person by breaking a lead seal 39 and removing a cover plate 37 to give access to the plunger 33. Other forms are shown in which the sliding catch plunger is withdrawn by magnetic means, and in which the plug tap is formed with passages for charging the gas reservoir 10 as well as supplying the burner.
Patent GB-1008638-A (GB)
Title: Process for the production of fibres and materials coated therewith
IPC: D01G1/02
Filed: 1962-05-09
Abstract: Tows or rovings of natural or man-made e.g. polyamide, filaments or fibres are converted to flock by softening the tow etc. by impregnation with a hot, liquid, neutral medium e.g. a solution (preferably aqueous) of a degreasing, washing and/or wetting agent based on sodium salts of alkyl-sulphonic or benzene-sulphonic acids with admixture of soda, applied at a temperature of about 100 DEG C., squeezing-out the liquid and washing the tow etc. in water, cutting the tow etc. in softened and degreased condition into fibres of required length and mechanically opening e.g. in a centrifugal mill, the fibres in the dry state.  If the fibres are to be applied to an adhesive-covered support, a preparation which facilitates electrostatic deposition of the fibres e.g. the composition according to Specification 1,008,637 may be applied, as by spraying and subsequent suction filtering or blowing-off, to the softened material before or after the cutting operation.
Patent GB-813255-A (GB)
Title: Improvements in or relating to fuel injection systems for internal combustion engines
IPC: F02D9/00
Filed: 1957-06-05
Abstract: 813,255. Fuel injection pumps. GENERAL MOTORS CORPORATION. June 5, 1957 [June 14, 1956], No. 17876/57. Class 102(1). [Also in Group XXVII] A fuel injection pump 170, supplying nozzles in the intake passages of an internal combustion engine, is fed from a tank 166 by a low-pressure diaphragm pump 168 delivering into a vapour separating chamber 184, the pump plungers being actuated by a cam 180 on a shaft 182 forming an extension of the ignition distributor 176. The pump pressure chambers are formed in resilient plugs 178 abutting the plungers and' the inlet valves 196 are connected to the bottom of the separator chamber 184, excess fuel from which flows through an escape valve 194 to a cooling jacket 198 around the pump cylinders. At starting a solenoid 260 in the starter motor circuit actuates a plunger 262 to hold valve 194 closed whereby the total output of the supply pump 168 is forced through the injection pump 170. Specifications 813,256 and 813,275 are referred to.
Patent GB-586747-A (GB)
Title: Improvements in crown corks and like bottle closures
IPC: B65D41/12
Filed: 1944-09-20
Abstract: 586,747. Stoppers. INNES, W. A. Sept. 20, 1944, No. 17943. [Class 125 (iii)] The usual packing disc 6 within the metallic capsule of a "crown cork" closure is provided with a circular propection or boss 4, which fits tightly within the mouth of the bottle and does not project beyond the plane of the edge 8 of the crimped flange of the capsule. The disc and projection may be of cork or a compressed cork or like resilient composition, and may be moulded or pressed, and either integral with or separate from each other.
Patent GB-381176-A (GB)
Title: Improvements in swings for babies
IPC: A47D13/10
Filed: 1931-06-22
Abstract: 381,176. Swings. BROWN, L., 100, Norton Road, Nook, Rochdale. June 22, 1931, No. 17957. [Class 132 (i).] A baby's swing comprises a four-sided bag 1 forming a seat for the baby one side of which is extended to form a back rest 1a while the opposite side is provided with openings 2 for the legs. The shape is retained by a steel frame 3 at the front and sides having sufficient elasticity to allow the bag to assume the form of the child when seated. The bag is suspended from a square steel frame 5 by four cords attached by a cord 7 to a spring 10 adjustable in height by a buckle 8. Specification 227,054, [Class 132 (i), Amusement and exercising apparatus &c.], is referred to.
Patent GB-572177-A (GB)
Title: Improvements in or relating to the control of electrical billet heating machines
IPC: C21D1/40
Filed: 1943-11-01
Abstract: 572,177. Control systems for resistance heating. ARON, H. Nov. 1; 1943, No. 18020. [Class 40 (iii)] [Also in Groups XI and XXXV] In heating billets 133 by passing current therethrough while held under pressure between anvil electrodes 57, 71 the potential applied is kept relatively low (insufficient to produce local overheating at the contact surface with the electrodes) until when the contact faces of the billet reach or approach softening point, the potential is increased to raise the temperature to the final temperature and the softened ends of the billet are compressed. The secondary 110 of a transformer is connected to the electrodes 57, 71, and connections 116 of the primary to the transformer are altered by electromagnetic switches 123, 131 to increase the secondary voltage during heating by a device 100 sensitive to temperature or heat radiation of the billet, by a hand-operated push-button 149, by a time-delay relay 181, or by a limit switch 157 operated by a cam-rod 151 on a movable electrode holder 70 when the ends of the billet are compressed. The transformer primary is connected at one end to current supply line 112 and has tappings 115 connected to contacts 116, which are connected by bridges 119, 120 (set by hand) to contacts 117, 118 connected through the switches 122, 131 to the other current supply lines 125, 127. Current from switch 122 passes through a switch 124 set by hand to current supply line 125 or to line 127, which is the neutral of a 3-phase supply. The control current for switches 123, 131, which are interlocked through contacts 164, 165, passes through lines 136 to a motor operating a pump driving a hydraulic ram moving the upper electrode 71, and has a branch line 140 connected to hand-operated push-button control box 142. Low-voltage current is started by push-button. 149 and is stopped by push-button 148. High-voltage is started by push-button 147 and is stopped by push-button 148, by limit switch 157 on final compression of the billet throughout or by the heat radiation-sensitive device 100 acting through relay 145. Alternatively low-voltage is stopped by limit switch 157. The heatsensitive device 100 may be set to stop the voltage at a higher temperature than normal to act as a safety device. In a modification, hydraulic pressure for driving the ram passes through a pipe 186 and spring-loaded valves 196, 197 to a piston 198 operating a switch 180 for starting the current arranged in place of the push-button box, in series with the limit switch 157, a two-way time switch 181 and the electromagnetic switches 123, 131. The time switch changes the current to the higher potential, which is such that heating of the billet is completed in normal time. Specifications 135,344, [Class 39 (iii)], 569,120, [Group XXII], and 569,996, [Group XI], are referred to.
Patent GB-284542-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F01L7/04
Filed: 1927-07-07
Abstract: 284,542. MacNaughton, A. July 7, 1927. Two-stroke-cycle engines. - A double-acting multicylinder engine is provided along one side with an inlet valve 9 comprising a pair of oppositely rotating tubes 10, 11, Fig. 3, and at the other side with a rotating tubular exhaust valve 38, Fig. 7. The cranks and valve ports of the cylinders 1 and 2 are at 180‹ to each other, and the cranks and valve ports of the cylinders 3 and 4 are also at 180‹ to each other, but at 90‹ to those of the cylinders 1 and 2. An air pump 33 supplies a carburettor 34, the mixture from which is compressed in a compressor 35 which is driven at twice the speed of the working pistons. The compressed mixture passes through a pipe 36 to the inner tube 11 of the inlet valve, and and thence through the appropriate ports 21, 25 to the lower and upper ends respectively of the cylinders 1 and 2, the opposite ends of which are open to exhaust through the appropriate ports 51 in the exhaust valve. Ignition occurs when the pistons of the cylinders 1 and 2 have travelled a short. distance from the cylinder ends. When the pistons of cylinders 1 and 2 are at mid-stroke, compressed mixture is forced into opposite ends of the cylinders 3 and 4.
Patent GB-788391-A (GB)
Title: Improvements in and relating to impregnated electrical components
Inventor: DYER GUSTAVUS HAROLD
IPC: H01H85/02
Filed: 1953-06-30
Abstract: 788,391. Capacitors. BRITISH THOMSONHOUSTON CO., Ltd. June 30, 1954 [June 30, 1953], No. 18109/53. Class 37. An electrical capacitor comprises a casing within which are contained one or more impregnated capacitor elements provided with a fuse, the fuse being shrouded from the elements and the casing, so that if the fuse blows the evolution of conducting particles by the arc produced thereby is substantially prevented and the arc is not maintained by the formation of a conducting path. In the construction shown, the fuse 4 comprises a thin wire which interconnects the terminal 3 and the capacitor element 2 which is housed within a casing 1 and impregnated with a suitable oil. The fuse is surrounded by a folded sheet 6 of insulating material provided with an aperture 7 through which the connecting tagfrom the capacitor element passes. In an alternative construction the fuse wire lies between two parallel sheets of insulating material. In a further construction, the fuse is contained within a sealed glass envelope.
Patent GB-436606-A (GB)
Title: Improvements in thermionic valves
IPC: H01J19/52
Filed: 1934-06-19
Abstract: 436,606. Thermionic valves. ROBINSON, E. Y., Garvary, Dryden Road, and KAY, J., 38, Borden Avenue, both in Bush Hill Park, Enfield, Middlesex, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. June 19, 1934, No. 18188. [Class 39 (i)] In a vacuum discharge tube displacement of the electrode structure is prevented by a cross piece having parts 3, Fig. 2, of a diameter not greater and preferably slightly less than the smallest internal diameter of the tube wherein the cross piece is used, and other parts 4 of a diameter as large as and preferably slightly larger than the largest internal tube diameter ; the parts 3 are rigid and the parts 4 relatively flexible. In a modification the rigid part may be formed by a disc 3a, Fig. 5, of mica or metal and the flexible part 4 by a toothed mica disc ; the two parts may be riveted together or used together without fastening to each other. In a further construction the flexible parts are obtained by making cuts 7, Fig. 7, in a disc. The cross pieces may be attached to the electrode or electrode structure by the hollow rivet 6, Fig. 5.
Patent GB-145795-A (GB)
Title: Improved process of casting metal
IPC: B22D19/00
Filed: 1920-07-02
Abstract: 145,795. D÷hle, F. Jan. 31, 1918, [Convention date]. Casting processes.- Die-castings are formed with a core of metal of greater strength and of less cost than the metal used for the coating, thus allowing repetition sharp castings to be produced and avoiding machining while strengthening the finished articles. The Figure shows a hollow body, the core being entirely covered by the finer metal, and supported in the mould by fine pins. The core may be a casting or forging, solid or hollow, and need not be entirely covered.
Patent GB-1067504-A (GB)
Title: Improvements in or relating to wood wool slabs
Inventor: HAZLEHURST CHARLES PATRICK
IPC: E04C2/18
Filed: 1965-04-30
Abstract: 1,067,504. Floor slabs; roof slabs. WOODCEMAIR Ltd. Jan. 28, 1966 [April 30, 1965], No. 18204/65. Heading E1W.  A wood wool slab for flooring or roofing is of channel or arched, Fig. 3 (not shown), cross-section providing flanges or legs 10, 11 which are reinforced by embracing metal channels 19. each channel 19 having a flange 24 contacting the inner face of a leg and a lip 22 engaging a slot in the slab. Each slab may enclose heating or other service pipes. Adjacent slabs may be interconnected by members fitting over the flanges 24 and may support a suspended ceiling.
Patent GB-458841-A (GB)
Title: Improvements in or relating to absorption type refrigerating apparatus
IPC: F25B15/10
Filed: 1935-06-25
Abstract: 458,841. Refrigerating. EWART, J. H., HAWES, W. B., and EWART & SON, Ltd., 346, Euston Road, London. June 25, 1935, No. 18215. [Class 29] Absorption systems.-In a continuous - cycle system, the generator tubes 5, and the tube 16, by which weak liquor is raised to a vessel from which it flows by gravity to the absorber 4, discharge mixed refrigerant vapour and absorption solution into separators 10, 17, preferably of the centrifugal kind having a tangential inlet 19, Fig. 3, in which the solution is deposited as a flowing film over which the vapour flows. The tubes are disposed in a common heating- flue 9, and the solution separated in the separator 10 flows into a sump 13 from which a part passes down the tube 14, and returns to the generator with the strong solution returning through the pipe 8 to the lower header 7 of the generator. The other part of the solution flows into the pipe 15 and thence to the tube 16, which discharges into the separator 17 from which the weak solution flows through the pipe 24 to the absorber. Vapour passes from the separator 10 to the condenser 2, which discharges through a loop 26 to the evaporator, and from the separator 17 into a condenser tube 23 cooled by inert gas returning through the duct 28 from the absorber to the evaporator 3. The condensate from the tube 23 returns to the sump 13 or, if desired, directly to the generator or the tube 16. The flow of mixed inert gas and refrigerant vapour from the top of the evaporator to the absorber is produced by an injector 30 through which flows a part of the inert gas returning through the duct 28. Specifications 458,836 and 459,051 are referred to.
Patent GB-457642-A (GB)
Title: Method of casting and apparatus therefor
IPC: B22D41/12
Filed: 1936-07-01
Abstract: 457,642. Casting. FORD MOTOR CO., Ltd., 88, Regent Street, London. July 1, 1936, No. 18301. Convention date, Sept. 7, 1935. [Class 83 (i)] To increase the output of molten metal from the heating furnace to the moulds a reservoir furnace 17 of large capacity is placed between the electric heating furnace 11 and the ladle 29, the ladle reciprocating with a mould 19 during the filling thereof and returning to aline with a new mould. The ladle is fed from a trough 36 in which molten metal continuously flows from the furnace 17, which may be coal fired. This furnace is fed by a trough 15, into which metal is poured from the furnace 10, which pivots about a centre 11. The moulds are supported by carriers 20 from a conveyer chain 21, which is supported by trolleys 23 from I-beams 22 or the like. In Fig. 5 is shown the arrangement of the ladle 29 and its tipping by a band wheel 32 working through reduction gearing. The trough 36 is shown partly in section and is shaped and positioned so that its spout is always over the ladle, the tipped position of which is shown in broken lines 34. The ladle is reciprocated by an electric motor and runs on rails 24. A baffle prevents slag entering the pouring spout.
Patent GB-1057895-A (GB)
IPC: G03C1/38
Filed: 1964-05-04
Abstract: The viscosity of aqueous gelatine solutions containing hydrophilic polymers is reduced by adding thereto water-soluble compounds of one of the formulae <FORM:1057895/C3/1> and <FORM:1057895/C3/2> wherein each of R1, R2, R3 and R4 are alky and R is a straight-chain or branched-chain alkylene radical, a branched-chain alkylene radical in which the terminal group of a side-chain is replaced by a dialkylamino group, or a group of the formula <FORM:1057895/C3/3> wherein n is 1, 2, 3, 4 or 5, p is 1, 2 or 3 and R1 is alkyl.  The polymer may be poly-(styrene sulphonic acid), a mixture of poly-(m- and p-vinyl toluene sulphonic acid), poly-(vinyl p-sulphobenzoate) or copoly-(methacrylic acid/methyl methacrylate).  The gelatine/polymer solution may comprise a gelatino silver halide emulsion flocculated by addition of the polymer.
Patent GB-462226-A (GB)
Title: Improvements relating to wheels for motor and other vehicles
IPC: B60B11/06
Filed: 1935-06-27
Abstract: 462,226. Arrangement of wheels. HENRY, L. E. V. J. June 27, 1935, No. 18424. Convention date, June 28, 1934. [Class 108 (ii)] A wheel for vehicles, comprises twin wheel bodies mounted one on either side of a hub and connected together by a series of double cranks, the axles of which extend freely through the hubs so that the wheel bodies turn eccentrically with respect to this hub and are maintained in parallel relationship. Wheel bodies 1, 2 are mounted on either side of a hub, which may, if desired, be a driven hub, by means of double cranks 3, the centre portions 4 of which freely rotate in the hub. Figs. 1 and 3 show the behaviour of a vehicle wheel on level ground and uneven ground respectively.
Patent GB-477092-A (GB)
Title: Improvements in and relating to variable-speed friction driving gear
IPC: F16H15/28
Filed: 1936-07-03
Abstract: 477,092. Motor-mountings. JONES, A., and JONES, W. H. July 3, 1936, No. 18448. [Class 35] [Also in Group XXIV] A spherically-faced friction driving disc h is carried by the shaft of an electric motor f, which can pivot about a vertical pin c, to vary the zone of contact between the disc h and a driven disc k, the pin c being carried by a lever d, which is turned about a horizontal pivot l, by adjustable spring-pressure m, to press the disc h into contact with the disc k. If the spring- pressure is relieved, the discs will separate under the action of gravity on the motor-end of the lever d. Contact-zones on either side of the driving disc may be used to produce variable-speed backwards or forwards, the motor being turned about the pin c, to an extent limited by screw-stops q, by means of a lever-linkage s, t, u, spring-loaded in one direction and connected to a hand or foot control. The driven disc k drives a potter's lathe.
Patent GB-958063-A (GB)
Title: Method of producing terephthalic acid
IPC: C07C51/41
Filed: 1961-05-19
Abstract: A terephthalic acid salt is produced by continuously introducing an alkali or thallium benzenecarboxylate feed into a moving bed containing a mixture of a salt of terephthalic acid, unreacted salt and a catalyst and blowing a hot inert gas through the mixture, the feed being of grain sizes 0.1-0.5 mm. and being at a temperature below the melting point of the salt and said mixture being heated by the hot inert gas to a temperature above the melting point of the salt and being maintained with a content of 5-30% unreacted salt.
Patent GB-498233-A (GB)
Title: Improvements in and relating to electric connections
IPC: H01R33/97
Filed: 1937-07-03
Abstract: 498,233. Two-part couplings. THOMAS, A. E. F. July 3,1937, No. 18506. [Class 38 (i)] A locking device for a coupling having a casing enclosing a spring socket member that is displaced towards the casing by the act of removing the plug member from the socket member, comprises an insert having arms that fit between the socket and the casing on both sides to prevent such displacement. As applied to secure a tubular lamp 17 in a holder 10 the spring socket member consists of a U-shaped clip contact 11 with projections 15 that enter a groove 18 in the plug cap 16 on the lamp. The insert consists of a forked insulating member 19 of the form shown in Fig. 4, passed in through a slot in the casing 10 and fitting between the projections 15 and the wall of the casing. According to the Provisional Specification if the spring contact is of folded form with one side of the fold attached to the holder and the other pressing on the lamp cap, the locking insert may pass between the two sides of the fold.
Patent GB-223306-A (GB)
Title: Improvements in thermionic valves and the like
IPC: H01J19/30
Filed: 1923-07-18
Abstract: 223,306. Osborn, H. J., and Turner, W. L. July 18, 1923. Alloys. - Electrodes are made of an alloy of iron with 10 to 15 per cent of chromium, and 0.1 to 0.5 per cent of carbon, the preferred proportions being 14 per cent of chromium and 0.15 per cent of carbon; the alloy does not occlude gas to any extent. According to the Provisional Specification the proportion of chromium may be 9 to 20 per cent.
Patent GB-752279-A (GB)
Title: Improvements in and relating to magnetic amplifiers
Inventor: WEST ALLAN LUKE
IPC: H03F9/04
Filed: 1954-06-24
Abstract: 752,279. Magnetic amplifiers. BRUSH GROUP, Ltd. Dec. 23, 1954 [June 24, 1964], No. 18567/54. Class 40 (4). In an auto-self-excited parallel-connected magnetic amplifier which is also provided with auxiliary feedback windings 28, 29, and in which the load current is derived from a rectifier bridge 27, the half-wave rectifiers 25, 26 are shunted by variable resistors 30, 31, respectively, adjustment of which controls the feedback ratio. Specification 589,341 is referred to.