baber/WOPTO huggingface dataset:
Patent GB-314683-A (GB)
Title: Improvements in and relating to sound reproducing apparatus
IPC: H04R11/08
Filed: 1928-07-10
Abstract: 314,683. Bailey, W. C., and Tweedy, W. July 10, 1928. Gramophone pick-ups; magnetic instruments. -In machines adapted to reproduce sounds from records by causing the stylus bar to vibrate. a diaphragm and also, when desired, an armature in a magnetic field which controls an electric circuit whose current in turn controls an amplifying circuit, an arm 10 projecting from the stylus arm 3 has an armature rigidly connected thereto. The arm 10 may itself constitute the armature. A horseshoe magnet 5 with pole pieces 6, 7, Fig. 2, surrounded by solenoids 8, 9 may be used. There may be a second electromagnetic circuit with armature 11 on the other side of the stylus mechanism, as shown in dotted lines on Fig. 1. The two armatures may be of different shapes or thicknesses so as to emphasise certain portions of the scale or bring out other vibration characteristics. The magnet 5 may be adjustable relative to the armature, being supported from a bar 14, Fig. 4, by bolts 12, with springs 15. An arrangement is shown in Fig. 5 in which the armature 18 and stylus arm 3 extend in opposite directions from the stylus socket 17, an additional armature 20 in line with the stylus socket being provided, if desired. The poles of the electromagnets may be parallel to one another or at an angle. Fig. 6 shows an arrangement in which the poles are at an angle of 60‹, their end faces being chamfered so as to be parallel with the armature.
Patent GB-985217-A (GB)
Title: The process for the production of metal soaps of epoxidised fatty acids
IPC: C07D303/40
Filed: 1961-06-02
Abstract: Soaps of epoxidized fatty acids (C11-C22) and di- and polyvalent metals are prepared by saponifying the esters thereof with mono or polybasic alcohols in aqueous alcoholic solutions, 50-70% alcohol, of alkali metals, oxides, hydroxides or alcoholates and reacting the water-soluble alkali metal salts with aqueous solutions of salts of the di- or polyvalent metals. The alcohol, preferably a straight or branched chain alcohol with up to 4C atoms, may be in a 50-60% aqueous solution.  The epoxidized methyl esters of undecylenic and oleic acids linseed oil fatty acids, a C20-22 acid mixture, soya bean oil, castor oil, olive oil and linseed oil and their barium, calcium, cadmium, manganese, magnesium zinc, lithium, aluminium and lead are referred to and examples describe the preparation of the cadmium soaps of an epoxidized methyl ester of undecylenic acid, an epoxidized linseed fatty acid methyl ester, and an epoxidized linseed fatty acid methyl ester and an epoxidized castor oil, the manganese, soap of epoxidized methyl ester of oleic acid, the lithium soap of epoxidized methyl oleate, the magnesium soap of epoxidized soya bean oil, the calcium soaps of epoxidized methyl ester of a C20-C22 acid mixture, and epoxidized olive oil, and the zinc soap of epoxidized linseed oil. Specifications 754,584, 825,691, 985,218 and 985,219 are referred to.
Patent GB-1500096-A (GB)
Title: Method of carrying out endothermic processes
IPC: C01F7/445
Filed: 1976-05-14
Abstract: 1500096 Two stage fluidized treatment METALLGES AG 14 May 1976 [3 June 1975]20118/76 Heading C1A [Also in Division B1] Endothermic processes, other than the decomposition of aluminium chloride hydrate to yield Al 2 O 3 , are carried out by introducing a solid material entrained in a gas stream into a fluidized bed reactor 1 to produce an expanded fluidized bed in which the solids concentration decreases from bottom to the top of reactor and wherein fluidizing or primary air is supplied to the fluidized bed reactor through a gas distributer, separating the solids from the gas and in which the separated solid material and secondary air are fed into the reactor at points 3 and 4, respectively above the gas distributer used for admitting the fluidizing air (2) and the heat of reaction being produced by combustion of fuel, the fuel being fed 5 into the zone between the gas distributer and secondary air inlet, and in which the solids, entrained by gases exhausting at the top of the reactor, are separated therefrom and fed into a holding reactor 6 in which they are fluidized, a partial stream of solids from 6 being recycled to the fluidized-bed reactor to maintain a predetermined solids content of suspension therein. Preferably, the density of the suspension in the fluidized bed reactor is controlled to correspond to a solids volume of 2 to 20% of the reactor volume between the gas distributer and the secondary air inlet and to a solids volume of 0À2 to 2% of the reactor volume above the secondary air inlet. The solids content in the holding reactor may be controlled to 35% of the volume of the holding reactor. Residence times in the holding reactor are typically 2-10 times those in the fluidized bed reactor-the latter being 10 to 30 mins. in duration. A fluidized bed cooler may be used to cool the stream of solids emerging from the holding reactor, the extracted heat being used to heat the secondary air or the fluidizing air. The present method is particularly useful for drying crystalline inorganic compounds (e.g. the hydroxides of Mg, Fe or Al), the burning of lime and dolomite, the deacidification of cement, or the decomposition of FeSO 4  or MgSO 4  and high-temperature metallurgical processes (e.g. the oxidation of ilmenite).
Patent GB-1378733-A (GB)
Title: Indirectly heated type cathode devices
IPC: H01J1/24
Filed: 1973-04-27
Abstract: 1378733 Thermionic cathode constructions TOKYO SHIBAURA ELECTRIC CO Ltd 27 April 1973 [28 April 1972] 20222/73 Heading H1D An indirectly heated cathode comprises a hollow casing 1 containing a mixture 3, 4 of a metal and an insulating and heat resistive material, an emissive substrate 2 mounted at one end of the casing and a metal foil heater 5 embedded in the mixture and spaced from the substrate. A concave porous disc 2 is brazed to a Mo cylinder and covered with a layer 4 of the mixture. A flat spiral W foil heater 5 is added and covered with a mixture of Al 2 O 3  and Mo powders. This is compressed with a die 6 and sintered. The inner surface of substrate 2 and the heater may both be concave. The mixture may comprise Y 2 O 3 , ZrO, HfO 2 , BeO 2 , MgO or a rare earth oxide and W, Ni, Re, Ta, Ti, Zr, Hf, V, Nb, Cr or elements of the Pt group. The cylinder may be coated with Ru-Mo alloy. The heater may comprise one spiral or two interleaved spirals joined at their centres. It is etched from sheet then shaped under pressure at 1700‹ C. It may be coated with an insulating oxide film. A thin heater permits the use of a shorter casing thereby reducing heat losses and shortening starting time. The cathode is used in klystrons and travelling wave tubes.
Patent GB-635019-A (GB)
Title: Improvements in or relating to rotary wing aircraft
IPC: B64C1/00
Filed: 1947-07-28
Abstract: 635,019. Helicopters. DOMAN-FRASIER HELICOPTERS, Inc. July 28, 1947, No. 20262. Convention date, Aug. 9, 1946. [Class 4] A helicopter comprising a tiltable azimuth control member for adjusting the pitch of the rotor blades is provided with auxiliary means enabling the azimuth control member to be adjusted for trimming purposes, independently of the main pitch control. As shown in Fig. 1, pitch of the rotor blades 12 is controlled by a gimbal ring 16, through control levers 46, 46<SP>1</SP>, or a single universally mounted lever, connected to pistons 44, 44<SP>1</SP> working in hydraulic cylinders 43, 43<SP>1</SP> connected by pipes 47, 48, 471, 481 to cylinders 28, 28<SP>1</SP>, the rods 29, 291 of the pistons working in these cylinders being connected to the ring 16. Each of the pistons 27 is loaded by opposed compression springs 31, 32 which impose " feel on the pilot's control member. For trimming purposes, auxiliary levers 38, 38<SP>1</SP> or a single universally mounted lever, operate pistons 36, 36<SP>1</SP> in cylinders 35, 35<SP>1</SP> connected by pipes 39, 40, 391, 401 to cylinders 25, 251, the pistons of the latter being connected to the cage 26 of a gyroscopic control member by rods 24, 24<SP>1</SP>. Movements of the pistons and rods 24, 241 due to operation of the levers 38, 381 causes rotation of the cage 26 to operate electric switches controlling the supply of pressure liquid from a pump 60 to cylinders 51, 51<SP>1</SP> mounted beneath the cylinders 28, 28<SP>1</SP> by which the plate 16 is tilted independently of the main control levers. The gyroscopic control member is damped as described in Specification 635,017, so as to be substantially insensitive to short-term changes of fuselage attitude, but responsive to longterm changes of attitude. Fig. 4 shows an arrangement in which the gyroscopic control is omitted, the pipe lines 39, 40 from the trimming cylinder 35 being directly connected to the cylinder 51.
Patent GB-984824-A (GB)
Title: Improvements in and relating to spindle-stopping devices for multiple spindle automatic turret lathes
IPC: B23B9/00
Filed: 1961-06-05
Abstract: 984,824. Lathe spindles. PITTLER MASCHINENFABRIK A.G. June 5, 1961 [June 4, 1960], No. 20292/61. Heading B3T. A multiple spindle turret lathe having clutch and brake devices for each spindle has electro - magnetic means for moving the clutch and brake devices when electric circuits are closed so that a spindle may be stopped, re-started or allowed to run free, as required. The spindles 1-6, Fig. 2, indexible with the turret 7, are driven by gears 10, Fig. 1, through friction clutches operated by electromagnetic control devices 9. Selected spindles are stopped by operating electromagnetic devices 11 which engage braking devices 16, Supply lines from the electromagnetic means are brought to circumferential contact segments 12, 13 arranged on a disc 8 rotatable with the turret.
Patent GB-885475-A (GB)
Title: Improvements in or relating to feed mechanisms for textile carding engines
Inventor: LAING JAMES
IPC: D01G15/40
Filed: 1959-06-13
Abstract: 885,475. Carding-engines. GIDDINGS & LEWIS-FRASER Ltd. June 7, 1960 [June 13, 1959], No. 20303/59. Class 120(1) In a feed mechanism of a carding-engine for bast or synthetic fibres, a feed plate 6 projects between the main cylinder 1 and a feed roller 2 to form in conjunction therewith a "nip" through which fibres pass to be carded. The plate may be curved, as at 9. A stripper roller 5 for roller 2 serves also as a stripper for a first worker roller 10 in tandem therewith. Pressing roller 8 forms a nip with the upper end of the fibreconveyer 3.
Patent GB-844171-A (GB)
Title: Ceramic structures for electron tubes and method of making the same
Inventor: WELCH JAMES ROY
IPC: C04B37/02
Filed: 1957-06-27
Abstract: A ceramic body is metallized, for bonding it to a metal or metallized ceramic body, by coating it with a mixture of powders including 1% to 25% by weight titanium, 40% to 10% by weight manganese and over 50% by weight of either molybdenum or tungsten and then firing it in a reducing atmosphere at a temperature at least as high as the sintering temperature of the mixture a suitable coating and firing technique being described.  The powdered metals may be in either their elemental or oxide forms or the titanium may be in the form of titanium hydride.  The preferred percentage ratios are expressed by the formula x% Mn+4x%Mo or W+Y% Ti=100% the actual values not being critical and the optimum mixture being about 19% Mn+77% Mo or W+4% Ti, U.S.A. Specification 2,667,427 is referred to.
Patent GB-148503-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D1/02
Filed: 1920-07-10
Abstract: 148,503. British Thomson - Houston Co., (Assignees of Loewenstein, L. C.). June 22, 1916, [Convention date]. Cooling parts; regulating.-Relates to an automatic device for ensuring, in the, event of the condenser vacuum being lost, a reversed cooling- circulation of elastic fluid through the idle-run. ning low-pressure stages 18, 19 of a turbine having an extraction pipe 20 through which the steam &c. is tapped from an intermediate stage by a pipe 20 for industrial purposes or througn which the steam is exhausted when the turbine is operating non-condensing. The pressure in the pipe 20 may regulate in the usual manner the position of a ring valve 23 controlling the flow of steam from the extraction stage 17 to the stages 18, 19, and this valve has an enlarged opening 22a so that even when the valve is closed a quantity of cooling steam passes through the idly running stages 18, 19. If, however, the condenser vacuum fails, the difference in pressure between the extraction stage and the final stage is not sufficient to promote an adequate circulation, and a device is provided to admit steam at a higher pressure than that of the extraction stage to the final stages of the turbine, from which it circulates backwards to the extraction stage. This device comprises pipes 44, 45 leading steam to the final stages from a primary source through a reducing-valve 41 or from the first stage of the turbine through a non- return valve 43, the supply of steam being controlled by valves 38, 39. The valve 38 is opened by a cam 47 when the ring valve 23 is closed, and the valve 39 is opened when the condenser vacuum fails, this valve being controlled by a diaphragm 52 subject to the pressure of the final stage. The ring valve 23 and the valve 38 may be omitted, the flow of cooling steam to the final stages through the conduits 44, 45 being then wholly under the control of the valve 39.
Patent GB-143110-A (GB)
Title: Improvements in or relating to umbrellas, parasols or the like
IPC: A45B9/02
Filed: 1919-08-21
Abstract: 143,110. Hedger, W. T. Aug. 21, 1919. Joints.-A removable handle for umbrellas, parasols, &c. is secured in position by a bayonet joint fitting comprising a lateral pin 3 set just out of the centre in a tubular steel liner 4. The pin is adapted to co-act with the lower end of a tubular steel stick 2 which is cut away for a short distance so as to pass the pin, and is provided with a short horizontal slot 5 at the top of the cut-away part to receive the pin when the handle is turned. A catch 6 is provided to lock the joint.
Patent GB-570001-A (GB)
Title: Improvements in and relating to safety razors
IPC: B26B21/18
Filed: 1943-12-09
Abstract: 570,001. Safety razors. HEIDE, H. C. (Gillette Safety Razor Co.). Dec. 9, 1943, No. 20596. [Class 30] The cap 15 and guard 10 of a safety razor are constantly urged to clamping position by a spring 20 mounted in the handle 13 and bearing against a nut 19 threaded on the end of a stem 18 secured to the cap. The cap is provided with a rib 16 and a boss 17 to position the blade which is of the kind having a slot open at one end to allow insertion and removal by endwise movement. To insert a blade, the nut 19 is unscrewed to the extent permitted by a stop screw 21 threaded into the end of the stem 18, and then by pressure on the end of the nut, the cap and clamp are separated against the action of the spring 20. The blade is inserted and the pressure removed so that the spring moves the cap towards the guard sufficiently to flex the blade so that the boss 17 enters a corresponding enlargement of the slot in the blade retaining the blade against endwise movement. The clamping is completed by operating the nut 19. The razor is particularly for use with blades protected by wrappers also having longitudinal slots open at one end, the blade with its wrapper being inserted as above described and, after the blade is held by the spring 20 and boss 17, the wrapper is withdrawn endwise. Such a wrapper blade is described in Specification 569,875.
Patent GB-201039-A (GB)
Title: Improvements in and relating to steam boiler and other furnaces
IPC: F23M5/02
Filed: 1922-07-29
Abstract: 201,039. McKean, J. G., and Jones, R. F. July 29, 1922. Walls; linings. - The walls of the combustion chamber a, Fig. 1, of a boiler furnace fired with liquid fuel are lined with an inclined inner wall b the face of which is at a greater distance from the main wall c at its lower end than at its upper end. The space e between the inner and outer walls is filled with broken refractory material among which air may be supplied for cooling purposes by a perforated pipe f.
Patent GB-585694-A (GB)
Title: Improvements in or relating to hinges
IPC: E05D11/08
Filed: 1945-08-13
Abstract: 585,694. Hinges. ATHERTON, H. Aug. 13, 1945, No. 20785. [Class 65 (ii)] [Also in Group XX] In a hinge comprising two intertwined spirals 1, 1<1> of spring wire, the inter-engaging faces 2 of the wires are made of V- or wedge-shape in cross section to maintain the spirals in co-axial relationship with one another without the necessity for a hinge pin. The ends of each spiral may be secured to an attachment plate.
Patent GB-1097933-A (GB)
Title: Improvements relating to tire inner tubes
IPC: B60C5/10
Filed: 1965-05-18
Abstract: 1,097,933. Tyre inner tubes. UNIROYAL Inc. May 18, 1965 [June 5, 1964], No. 20904/65. Heading B7C. A tyre emergency, butt-ended, inner tube comprises a valved central portion 18 integral at one end with a portion 16a of smaller crosssectional area and at its other end with a portion 17a of cross-sectional area smaller than portion 16a. The tube is formed from a conventional inner tube reinforced in its crown and sidewalls only with two nylcn plies and having a self-sealant therein by slitting it to provide two open ends, turning the two outer thirds inwardly inside the central portion, and heatsetting the tube in flat condition with a metal forming plate 19, 20, (Fig. 5, not shown), in each of the outer portions. The ends are each sealed with a gum filler strip 25 (see also Fig. 7A, not shown). The tube is stored with the portions 16a, 17a inserted within the central portion for use in emergency with a punctured tubeless tyre, when the folded tube is inserted into an elongated aperture (34) of a wheel rim (31) (Fig. 13, 14, not shown) and inflated with pressurized puncture sealant. The aperture (34) is normally sealed by a plug (36) retained in place by an auxiliary ring (40) (Fig. 14, not shown) bolted on to the rim.
Patent GB-1349479-A (GB)
Title: Field effect transistor amplifiers
IPC: G11C7/06
Filed: 1971-04-19
Abstract: 1349479 FET amplifiers NATIONAL SEMICONDUCTOR CORP 19 April 1971 [4 Feb 1970] 20979/71 Heading H3T In a field effect transistor amplifier having FET's 70, 72 forming a differential amplifier 68, impedances 52, 54 form a voltage divider normally biasing the input 56 to a quiescent potential, FET's 62, 64 provide a reference potential at 63 and first and second signal limiting means 90, 104 are responsive to the output 100 from the amplifier to limit the positive and negative excusions of the input 56, respectively. The amplifier may be used for read out from a data storage memory (10, Fig. 1, not shown) which includes a FET (16). The impedances provided by FET's 52 and 54 normally bias FET 70 on and FET 72 off. An input pulse (120, Fig. 3, not shown) on address lead (20) causes the FET memory element (16) to conduct. The change in potential (122) at the input 56 depends on the RC time constant of the memory. FET 70 turns off when the change in potential at the input 56 exceeds its threshold potential and FET 72 turns on causing the potential at 100 to go positive (124). The output is maintained until the end of the input pulse (120) when the "1" memory element (16) is gated off causing the input at 56 to decay exponentially (126) and returning the FET's 70, 72 and the output (128) to its normal state. FET's 96 and 116 are normally biased off but if the positive or negative going outputs (124, 128) exceed the upper and lower limiting levels FET 96 or FET 116 conduct respectively to shunt the input and limit the output (129, 138). Capacitance associated with the limiter 90 causes the input at 58 to be  driven down harder and enhances speed. The next address pulse (130) to the "1" memory element causes a positive going input at 58 and the time delay (T<SP>1</SP>d) between the start of the address pulse (130) and the start of the output at 100 is reduced by the use of the limiter circuits since the input at 58 is nearer the threshold potential of the FET 70. An inhibit switch 57 is provided across FET 54. The memory circuit and sense amplifier may be in integrated circuit form.
Patent GB-1472867-A (GB)
Title: Intermediates for cephalosporin synthesis
IPC: C07D513/04
Filed: 1975-08-11
Abstract: 1472867 Azetidinone - thiazoline intermediates for cephalosporin synthesis SOC FARMACEUTICI ITALIA SpA 11 Aug 1975 [15 Aug 1974] 21033/76 Divided out of 1472863 Heading C2C Novel azetidinone - thiazoline compounds of the formula wherein: R represents a hydrogen atom, an alkyl, cycloalkyl or alkenyl group that contains up to 12 carbon atoms and may be unsubstituted or substituted by one or more free or protected hydroxy or amino, cyano or nitro groups, a thienyl - methyl, furyl - methyl, naphthylmethyl, cyclohexenyl - methyl or cyclohexadienyl-methyl group, or a group having the general formula in which X is a hydrogen or halogen atom, a free or protected hydroxy group, an alkyl group having 1 to 4 carbon atoms or a nitro, cyano or protected amino group; Y is a protected hydroxy, amino or carboxyl group; n is 0 or an integer from 1 to 4; and each of the groups R<SP>2</SP>, which may be the same or different, is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; R<SP>1</SP> represents a hydroxy group, an alkoxy group having 1 to 4 carbon atoms, a benzyloxy, p - methoxybenzyloxy, p - nitrobenzyloxy, benzhydryloxy, triphenylmethoxy, phenacyloxy, p - halophenacyloxy, or phthalimidomethoxy group, an amino group that is unsubstituted or substituted by at least one alkyl group having 1 to 4 carbon atoms, cycloalkyl group having 5 to 8 carbon atoms, phenyl group or mononuclear heterocyclic group, or an acyloxymethyloxy, acylamidomethyloxy, or free or protected hydrazino group; Hal represents a halogen atom, preferably chlorine or bromine; and Z represents a hydroxy, azido, amino, or carbamate group, an -O-alkyl, -OCO-alkyl or -S-alkyl group in which the alkyl residue contains 1 to 4 carbon atoms, an -S-aryl group, or an -S-mononuclear heretocyclic group containing one or more nitrogen and sulphur atoms, are prepared by allylic halogenation of a compound of the formula e.g. by means of a haloamide such as an N- halosuccinimide, and optionally in the presence of light or while heating in the presence of a free radical initiator. The compounds of the invention may be used in the synthesis of cephalosporin compounds as described in patent Specification 1,472,863.
Patent GB-1042948-A (GB)
Title: Diaper
IPC: A61F13/15
Filed: 1963-05-27
Abstract: 1,042,948. Laminates. JOHNSON & JOHNSON. May 27, 1963 [May 28, 1962], No. 21064/63. Heading B5N. [Also in Division A3] A disposable diaper comprises an absorbent layer which may be plies of crepe tissue or fluffed wood pulp 20-120 mils. thick, and a facing sheet of a water-repellent film not exceeding 1 mil. thick, which may be of polythene, polypropylene or other material, which is perforated to allow moisture to pass through to the absorbent layer. The diaper may also have a waterproof backing sheet, e.g. of plastic film, cellulose acetate or waxed paper. The perforated facing sheet 14, Fig. 1, overlaps the absorbent layer at the side portions and is glued to the backing sheet 11 along lines 15. A two-ply diaper, Fig. 3, has a fluffed wood pulp absorbent layer 18 encased between two layers of non-woven fabric embossed along the edges and covered by a perforated facing sheet. The facing sheet may be perforated by needle punching over the entire area, the part of the film which is punched out being embedded in the absorbent layer to strengthen and stabilize the unit.
Patent GB-730144-A (GB)
Title: Improvements relating to packing means for fragile articles
Inventor: RANDALL WALTER HALL
IPC: B65D85/32
Filed: 1953-07-29
Abstract: 730,144. Egg flats. KEYES FIBRE CO. July 29, 1953, No. 21073/53. Class 18. Egg flats are provided with finger openings 31-33 adjacent to corners to facilitate their removal from egg cases in which they fit tightly by enabling them to be bent on a diagonal and clear the case walls. The flats are separated by cellular fittings 28. U.S.A. Specification 2,163,585 is referred to.