baber/WOPTO huggingface dataset:
Patent GB-1504146-A (GB)
Title: Cellulosic products
IPC: B31F1/12
Filed: 1975-02-11
Abstract: 1504146 Paper DENNISON MFG CO Ltd 11 Feb 1975 5775/75 Heading D2B A process of making a paper which is extensible and has insulative properties comprises treating paper to render it crepable, creping the treated paper to form an intermediate product having a mass per unit area greater than that of the initial paper, and calendering the intermediate product without degradation to produce a final product having a mass per unit volume which is at least that of the initial paper. The paper may be used for wrapping magnet wire in oil-filled transformers and coils in electric motors.
Patent GB-230452-A (GB)
Title: System for the reception or emission of high frequency electromagnetic waves or of low frequency fields
IPC: G01S1/02
Filed: 1925-03-03
Abstract: 230,452. Soc. Industrielle des ProcÚdÚs W. A. Loth. March 8, 1924, [Convention date]. Leader gear for assisting navigation; directive signalling; aerials.-Apparatus for guiding aircraft or other movable bodies by means of the inductive field from a cable carrying alternating current, or for analyzing the direction of radiated electromagnetic waves, is characterized by a particular disposition of the search-coil windings so that the telephones either give no sound, or else, an equal intensity of sound in each earpiece, when the coil is pointing in the critical direction, whilst a positive indication is also given of the degree of deviation of the search coil from the critical direction. The windings 1 of the search coil, Fig. 1, are laid on a former or core 2, 3, constituted by two surfaces of revolution the directrices of which are curves and the generatrices of which are equal; or the winding may be laid on a corresponding polygonal surface. The windings are not closed but are arranged symmetrically in pairs about the major plane X X, so that when the magnetic field is in the direction 8, two equal but opposed currents will be induced on the windings (as distinct from the usual absence of reception) but will annul each other in the receiver. Dead end effects are avoided by breaking the winding up into separate pairs or parts. In Fig. 2 each winding 1 has a contact 9 over which a brush 10 can be moved, to obtain equal reception, the inclination of the brush 10 to one side or other of the centre line indicating the deviation of the vessel from the correct course. In Fig. 4 the brush arm 10 being set for nul reception, the inclination of the second arm 10' gives an indica. tion of the direction of the incident flux. In Fig. 5 windings 1 of the kind previously specified are used in combination with known plane windings 15, 16. For a flux in the direction of the arrow 7 the currents induced in the plane windings 15, 16, as well as those in the sector-shaped windings 1, are equal and opposite. For an inclined direction of incidence the currents induced in the sector windings 1 are added to those set up in one of the plane winding and subtracted from those induced in the other plane winding. The form of windings described may be used for directional wireless transmission as well as reception, the direction of emission being controlled bv the position of the movable arms 10. Specification 195,088, which describes a somewhat similar receiving frame comprising an endless winding with a number of tapping points, is referred to.
Patent GB-1463761-A (GB)
Title: Speed sensors
IPC: G01P3/481
Filed: 1974-02-08
Abstract: 1463761 Measuring train speed electrically LONDON TRANSPORT EXECUTIVE 20 Jan 1975 [8 Feb 1974] 05833/74 Heading G1N A vehicle speed sensor includes a rotor 2 of a dynamo electric device which rotor is coupled to an axle of the wheel, respective stators 1 of the device being used for indication of different speeds. Each stator includes a primary winding P1 connected in series with the A.C. winding Tac of a transductor across an A.C. supply from transformer T2, and a secondary winding Sl coupled through capacitor C2 to the primary winding P3 of a saturable transformer T3. One secondary winding S'3 of the transformer T3 supplies via rectifier B D.C. control current to the control windings Tdc of the transductor. Another secondary winding S3 of the transformer T3 supplies an A.C. output to a vehicle speed control means (not shown). In use, with the rotor stationary the A.C. winding Tac of the transductor is at low impedance so a maximum A.C. voltage is supplied to the stator primary P1, the resultant output from the stator secondary S 1  is supplied via the transformer and rectifier to give a direct current in control windings Tdc to  maintain the transductor in its low impedance state. Upon rotation of the rotor A.C. is induced in the secondary S1, the resultant current magnitude supplied to the transformer being limited by the impedance of the coupling capacitor. At a given rotor speed, the decrease in impedance of the capacitor with frequency of the induced current causes sufficient current flow into the transformer T3 to bring it to saturation point. Thus the output voltage from the one secondary winding S'3 of the transformer falls causing corresponding reduction in current through the control winding Tdc of the transductor whereby its A.C. impedance is increased. Therefore the A.C. supply to the stator primary is reduced causing a fall in voltage at the secondary S1 whereby an avalanche action is initiated and the drop in output from the other transformer secondary S3 initiates the necessary corrective braking action. A plurality of stators, one for each of speeds zero, 16 k.p.h. 40 k.p.h. 70 k.p.h. and 90 k.p.h. may be provided. To ensure fail safe  operation, a train is provided with two dynamo electric devices each having its rotor fitted to a separate, independent axle, the output from each stator being compared to provide a null signal, Fig. 3 (not shown).
Patent GB-720034-A (GB)
Title: Improvements in the production of oxygen-containing condensation products from polynuclear aromatic non-alkylated hydrocarbons and aldehydes
IPC: C08G10/02
Filed: 1952-03-06
Abstract: Polynuclear aromatic non-alkylated hydrocarbons are condensed with more than 1.5 times the molar amount of aldehyde in presence of acid of less than 50 per cent by weight concentration for such a length of time that the product still has an oxygen content of 5-12 per cent and is still soluble in alcohol after heating with phenol and an acid catalyst.  Suitable hydrocarbons are naphthalene, phenanthrene or industrial mixtures thereof.  The aldehyde is preferably formaldehyde or a polymer thereof. Suitable acids are sulphuric, phosphoric and hydrochloric.  The resin formed is removed from the aqueous layer of reactants by decantation, dissolved in benzene or toluene, purified by filtration or sedimentation, and obtained by evaporation of the solvent.  It may also be purified with hot water or by steam distillation.  The initially formed resin dispersion may be used as such without purification.  The resins may be further reacted with phenols or derivatives thereof if desired in presence of acid catalysts, e.g. benzene sulphonic, sulphuric, hydrochloric, or acetic acid, boron fluoride, p-toluenesulphochloride or acid bleaching earth.  Suitable phenols for this reaction are phenol, cresol, xylenol, alkyl, aryl, aralkyl or cycloalkyl phenols, aminophenols, nitrophenols, salicylic acid, hydroquinone, resor cinol, phloroglucinol, pyrocatechol, naphthols, hydroxyanthracenes or mixtures thereof.  The products may be soluble in alcohol, aromatic hydrocarbons or benzine.  In the examples (1) and (2) naphthalene is condensed with paraformaldehyde in presence of aqueous sulphuric acid.  The purified resin is soluble in aromatic hydrocarbons, glycol, tetrahydrofurane, or methylenechloride. The duration of the condensation is determined by estimating the solubility in alcohol of the reaction product of a withdrawn sample with phenol; (3) and (4) the product of example (1) is heated with phenol and p-toluene sulphochloride yielding a hard clear resin.
Patent GB-871577-A (GB)
Title: Ceramic fibre products and method and apparatus for manufacture thereof
IPC: C04B28/24
Filed: 1958-02-24
Abstract: A moulding composition comprises a slurry of ceramic fibres and a liquid dispersion of at least 1% by weight of colloidal silica, the composition being retentive on drying of at least 10% by weight of silica based on the fibre.  The composition may also contain plaster of Paris, powdered or flaked graphite or carbon, micronized mica, powdered asbestos, Portland cement, powdered ceramic clays and earth, and particles of glass, metals, corundum, and quartz.  There may also be incorporated as reinforcement, wires e.g. of titanium, wire screening, and glass fibre.  The moulding of blocks of the material is described.  The composition may be fired at 2300 DEG F. after drying to produce a high strength low shrinkage refractory insulation material.  U.S.A. Specifications 2,244,325, 2,527,329, 2,597,871 and 2,754,224 are referred to.
Patent GB-398182-A (GB)
Title: Improved apparatus for producing a combustible charge for use in internal combustion engines
IPC: F02M23/14
Filed: 1932-02-27
Abstract: 398,182. Vaporizers. BALACHOWSKY, D., and CAIRE, P., 1, Rue Volney, Paris. Feb. 27, 1932, No. 5909. [Class 7 (iii).] A rich mixture is formed by air passing a filter q and entering a vessel v fed with fuel from a float chamber p through a restricted orifice r, and is supplied by a pipe s to a chamber i. The mixture is passed through tubes h made of iron, copper, nickel, or alloys of these metals, and is catalyzed in them by the heat of the exhaust gases passing around the tubes. A valve 2 allows a small quantity of exhaust to be added to the rich mixture, which, after leaving the tubes, is mixed with secondary air supplied through a port y from a casing c open to the atmosphere at z. The tubes h are enclosed in an insulated jacket d filled with foundry sand. A screw 7 closes one of the tubes, which may be used to supply a mixture for slow running adjacent to the throttle valve 1; or a light fuel air mixture may be supplied. Electrical resistances may also be used for heating purposes. In the modification shown in Fig. 4, exhaust gases from the engine are supplied through a pipe 13 to an emulsifier 20, and the rich mixture produced heated electrically by coils 18, by exhaust passing through tubes 16, and if desired by electric resistances 18a, and the heated mixture is mixed with cold air supplied through a valve 15. A pipe 12 may convey burnt gas which has not been expanded to the emulsifier 20. Reference has been directed by the Comptroller to Specifications 236,914, 296,755, [both in Class 7 (iii), Internal-combustion engines, Carburetting-apparatus &c. for], and 374,910, (as open to inspection under Sect. 91 of the Acts), 265,186 and 302,717, [both in Class 7 (iii), Internal-combustion engines, Carburetting- apparatus &c. for].
Patent GB-386151-A (GB)
Title: Improvements in and relating to pigments, paints and like coating compositions and putty
IPC: C09C1/24
Filed: 1932-02-27
Abstract: A grey pigment, produced by heating bauxite under reducing conditions such that the iron oxide content is reduced to ferrous-ferric oxide, may be mixed with cement, lime, linseed oil or varnish binders to form antirust paints or coating compositions for wood, masonry, &c. or may be combined with linseed oil or bituminous binders to make cements or putty.  The reduction is effected by coal, carbon, mineral oils, generator gases, &c. and the product is cooled with exclusion of air.  If the raw material contains sulphides, these are converted into oxides by a preliminary roasting.ALSO:A grey pigment, produced by heating bauxite under reducing conditions such that the iron oxide content is reduced to ferrous-ferric oxide, may be combined with linseed oil or bituminous binders to make cements or putty.
Patent GB-754843-A (GB)
Title: Improvements in or relating to the granulation of ammonium nitrate
Inventor: STENGEL LEONARD ANDREW
IPC: C05C1/02
Filed: 1954-03-01
Abstract: Ammonium nitrate particles are formed by flowing molten ammonium nitrate on to a flat moving belt, cooling it thereon to a temperature below 200 DEG F. to form a sheet and subdividing the sheet thus formed.  The belt is preferably made of metal, such as stainless steel, and may be water or air cooled.  The thickness of the ammonium nitrate sheets formed is preferably from 1/16 to 3/16 inches thick. The subdivision of the sheet may be effected in a hammer or roller mill or a granulator fitted with paddles or blades.  According to an example molten ammonium nitrate at 395 DEG F. is flowed on to a flat stainless steel belt to form a sheet 13 1/2 inches wide and 1/8 inch thick. The first six feet of the belt is water cooled and the ammonium nitrate sheet is removed from belt at 150 DEG F. for passage to a paddle wheel crusher.
Patent GB-553852-A (GB)
Title: Improvements in and relating to electric valve oscillatory apparatus
IPC: H02M5/00
Filed: 1942-05-04
Abstract: 553,852. Supply systems for high-frequency furnaces. BRITISH THOMSON-HOUSTON CO., Ltd. May 4, 1942, No. 5998. Convention date, May 2, 1941. [Class 38 (iv)] [Also in Group XL] A circuit for converting alternating current of commercial frequency to a higher frequency, comprises an inductance, a capacity and a pair of reversely connected valve means for setting the oscillating circuit formed by the inductance and the capacity in oscillation and supplying a load such as a high frequency furnace. Fig. 1 shows a circuit using a pair of valves 8, 9 using an ionizable medium and having immersion. ignitor control members 12 associated with a condenser 3 and the inductance of the output transformer 5. The excitation circuits 13-16 for the control members 12 are of the kind disclosed in Specification 488,851 and each comprises a discharge tube 23 controlling the application of the potential across a condenser 38 derived by rectification from the mains to a control member under the control of a voltage of adjustable phase derived from the mains through transformer 29. In this way the charge on the condenser is discharged in an oscillatory manner through the tubes 8, 9 at a point in the cycle determined by the phase-shifter 37, Fig. 2, showing the mains frequency A and the discharges ab, cd, ef, gh.
Patent GB-658266-A (GB)
Title: Improvements in or relating to radio frequency mixer circuits
IPC: H03L7/04
Filed: 1948-02-27
Abstract: 658,266. Radio frequency systems. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 6001. Convention date, Oct. 10, 1945. [Class 40 (v)] [Also in Group XL (b)] In a radio frequency system, first and second transmission means of electrical length equal to an odd integral number of quarter wavelengths not less than three are fed with transmitted signals and received signals respectively and coupled to a third transmission means, closed at both ends, provided with a termination mounted one quarter wavelength from one closed end so as to be terminated in its characteristic impedance and fed, between the termination and the other closed end, with local oscillations so that the output of a detector mounted in the first transmission means may be used to provide a signal for the automatic frequency control of the local oscillator, while a detector mounted in the second transmission means provides a signal for use in the receiver circuits of the system. As shown, part of the transmitted energy of a pulse echo system having a common transmitting and receiving aerial fed by a wave-guide 32 passes through an attenuating guide 34 to a waveguide mixer 38, and the received energy is fed through a T-R box 36 to a second wave-guide mixer 46. Local oscillations are fed into a wave-guide 58, closed at both ends which is coupled to the mixers through apertures 62, 64 which are tuned to resonate on opposite sides of the local oscillator frequency. The output of a detector 50 mounted in the waveguide 38 provides a signal for the automatic frequency control of the local oscillator, while the intermediate frequency output of a detector 52 mounted in the wave-guide 46 feeds the receiver circuits of the system. The wave-guide 58 is terminated in its characteristic impedance by a resistive member 74 which is mounted one quarter wavelength from one end, between that end and the local oscillator input. Specification 652,428, [Group XL (b)], is referred to.
Patent GB-139770-A (GB)
Title: Improvements in conveying devices
IPC: B65G25/00
Filed: 1920-02-27
Abstract: 139,770. Pedersen, C. March 1, 1919, [Convention date]. Depositing - machines. - In conveyers for conveying chocolates or pralines, and comprising two series of intermeshing bars which are vertically and horizontally movable in relation to each other, the mechanism which imparts the vertical movement is independent of that which causes the horizontal movement. One set of bars a is carried on the teeth of transverse comb-like members b, b, c, c which are fixed to the underside of beams d. Shoes e fixed to one of the combs c rest on a cam disk f keyed to a revolving shaft g. Vertical movement may. however, be imparted by rocking arms having rolls at the top on which the bars rest. Horizontal movement is caused by a pair of revolving eccentrics n which engage forks m attached to the other comb c. The other set of bars a<1> is actuated in a similar manner by a cam disk f<1> and eccentric n<1>. Any rice powder from the moulds which may have adhered to the chocolates &c. is removed by brushes on the bars and by stationary downwardly-pointing brushes arranged above them.
Patent GB-373635-A (GB)
Title: Improvements in or relating to rear wheel spring suspension device for road vehiclesor the like
IPC: B62K25/10
Filed: 1931-02-26
Abstract: 373,635. Cycle &c. spring frames. BARNETT, S, G., 76, Rosebank Avenue, Sudbury Hill, Middlesex. Feb. 26, 1931, No. 6036. [Classes 136 (i) and 136 (iii).] In a spring suspension for the wheels of motor cycles and like vehicles of the type comprising a spring-loaded piston working within a cylinder, the cylinder is fixed to the wheel and the piston is rigidly fixed to the frame of the vehicle. A cylinder 1 on each side of the wheel is fitted with a spring-loaded piston 2 provided with lugs 8, 10 passing through a slot 3 in the cylinder for attachment to the motor cycle frame 9, 11. Fixed to the inner side of the cylinder I is a bracket 16, Fig. 3, formed with a slot 17 for the reception of the end of the wheel axle. A further slot 19 receives an anchoring-stud on the brake drum, a slotted member 20 being rotated through 90‹ to hold the stud in position. A bar 21 fixed to the lugs 8, 10 is provided with apertures 22 for the attachment of a mudguard stay 23, pillion foot-rests, &c. The piston 2 is provided with annular grooves 12 for lubricant and with a guiding-strip 24 engaging the slot 3. In a modification, the piston 2 is formed integral with the cycle frame. The cylinder 1 may be provided with a lug for mounting a stand. The two cylinders may be connected together by a V-shaped member passing over the wheel and mudguard.
Patent GB-113194-A (GB)
Title: Improvements relating to Composite Electric Insulating Substances.
Inventor: MAJOR JOHN LEWIS
IPC: H01B3/04
Filed: 1917-04-28
Abstract: 113,194. Major, J. L., and Pybus, P. J. April 28, 1917. Insulation; insulators. -In electric insulating plates, slabs, and the like made of mica or other non-plastic material with alternate layers of a plastic composition or substance, the mica or other sheets are formed with recesses b at intervals through which the plastic material is continuous so as to bind the mica &c. layers together. In the construction shown, mica sheets a are caused to adhere by rubber solution, the top and bottom layers being covered by a plastic composition capable of being vulcanized or hardened.
Patent GB-197106-A (GB)
Title: Improvements in and relating to thermostatic electric circuit controllers
IPC: H01H71/40
Filed: 1922-03-01
Abstract: 197,106. British Thomson - Houston Co., Ltd., (General Electric Co.). March 1, 1922. Thermal switches with contact reinforced elecmagnetically. The thermostatic strip 10, on reaching a predetermined temperature, due for example to the current through a heating coil 18, makes contact at 12 with the armature 13 of an electromagnet 14 and so completes a circuit through the winding of the electromagnet 14 which attracts its armature 13 and reinforces contact. The above circuit may also include a circuit breaker 15 for breaking the main circuit to the heating coil 18. The strip 10 then cools down for a period of time determined by an adjustable stop 21, after which contact at 12 is broken and a spring 22 attached to the armature 13 ensures a quick break.
Patent GB-754145-A (GB)
Title: Improvements in circuits for additively combining electrical signals
IPC: H04N11/12
Filed: 1954-03-02
Abstract: 754,145. Mixing circuits. PHILCO CORPORATION. March 2, 1954 [March 3, 1953], No. 6082/54. Class 40 (4). [Also in Group XL (c)] In a signal combining circuit comprising a pair of valves 16, 18 to which respectively low and high-frequency signals are supplied, the valve 16 is provided with a resistive load 27 whereas the valve 18 handling the high-frequency signals is provided with an inductive load 23 which is coupled by a link 36 to a further inductance 28, so that the low and high-frequency signals appear in series at the output load, which comprises the grid 30 of a cathode-ray tube. A further resistor 29 is connected between the load end of the inductances 28 and the remote end of resistor 27, the resistors 27, 29, together with the inherent capacities 38, 39 and the inductance 23, 36, 28 forming a band-pass filter network for the high-frequency signals. As described, the arrangement is applied to a colour television receiver, in which monochrome signals in the range 0-3 Mc/s. are applied to the valve 16 via a blocking condenser 37, the valve being biased to act as a D.C. restorer, while chromaticity signals in the range 6.5-7.5 Mc/s. are applied to the valve 18. Specification 749,118, [Group XL (b)], is referred to.
Patent GB-720785-A (GB)
Title: Improvements in and relating to staples for fixing covers on wooden supports, more particularly furniture
IPC: F16B15/00
Filed: 1953-03-05
Abstract: 720,785. Wire staples. MEZGER, H. March 5, 1953 [March 31, 1952], No. 6172/53. Class 89 (2). A staple, e.g. for fixing materials to wood and particularly covers on furniture, comprises two pointed limbs 1 joined by a back 3 having at least one projection or bend 4. The projections may be formed by bending or machining and penetrate the material when the limbs are driven into place. A number of staples are assembled in a strip by sticking them together with glue or lacquer, or by burring, for use in a device which supplies them one after another for driving through the material into the wood by a hammer or pressure.
Patent GB-637802-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L9/32
Filed: 1947-03-05
Abstract: 637,802. Suction cleaners. EUREKA WILLIAMS CORPORATION. March 5, 1947, No 6238. Convention date, March 22, 1946. [Class 8(i)] A suction cleaner includes a wheel mounting comprising a bracket 34, Fig. 2, pivoted to the cleaner at one end by pins 36, a shaft 30 rotatably carried by the other end of the bracket and having trunnions 32 offset and parallel to the shaft axis, a wheel 14 journalled on each trunnion, means, e.g. a detent 60 on a spring 62 engaging one or other ends of a diametral hole 64 in the shaft 30 for preventing rotation thereof, a spring 38 biassing the bracket away from the cleaner and means, e.g., a shoulder 74, Fig. 1, on the cleaner casing engaged by a shoulder 72 on a pivoted handle-locking member 22, limiting the extent to which the shaft 30 may move away from the cleaner. Nozzle height adjustment is effected by rotating the shaft 30 through 180 degrees by means of a projecting pin 54. A handle 18 is adjusted as described in Specification 598,972.