baber/WOPTO huggingface dataset:
Patent GB-1182499-A (GB)
Title: Method for producing Hydrogen for Fuel Cell Modules
IPC: H01M8/06
Filed: 1967-08-21
Abstract: 1,182,499. Steam-reforming hydrocarbons. TEXAS INSTRUMENTS Inc. 21 Aug., 1967 [15 Dec., 1966], No. 38443/67. Heading C5E. [Also in Division H1] Steam-roforming of a hydrocarbon fuel to produce hydrogen is carried out in the anode section of a fuel cell 20 by reaction with water produced in the cell, the H 2  being consumed downstream in the cell. A gaseous feed stream 22 which includes H 2 , CO and partially reformed hydrocarbon from an oxidation, cracking, or steam-reforming process 10, is delivered to the cell 20. In an illustrated embodiment, see Fig. 2 (not shown), the feed stream 22 is produced in a molten carbonate catalytic steam reformer 10 of the kind disclosed in Specification 1,182,348, which also produces a nitrogen- and carbon dioxide-containing stream 26 (by combusting carbon in the salt) for delivery to the cathode section of the cell 20, which is also of the molten carbonate type (see Division H1). Fuels supplied to the reformer 10 are those described in Specification 1,182,348, and in specific examples the feed stream 22 to the cell 20 includes CH 4 , C 2 H 4 , C 3 H 6  and C 4 H 10 .
Patent GB-1402024-A (GB)
Title: Driving mechanism for a print character carrying means of a printer
IPC: B41J7/34
Filed: 1972-08-17
Abstract: 1402024 Printer control systems SEIKOSHA KK 17 Aug 1972 [18 Aug 1971] 38463/72 Heading G4H [Also in Division B6] A type drum 1 is intermittently rotated by a pulsed electromagnet 13 operating a ratchet and pawl mechanism. To reset the type drum, stepping onwards occurs until a cam follower 18, attracted by an electromagnet 22, engages a step 17 in a cam 16 on the shaft of the type drum. Pulses operating the stepping magnet 13 are counted by a counter (30, Fig. 2) which, after a number equivalent to a complete revolution of the type drum, signals to allow further stepping of the type drum to select characters together with the simultaneous release of electromagnet 22 holding the follower 18 in the locking position.
Patent GB-818749-A (GB)
Title: Recovery of benzene
Inventor: POWERS JOHN MICHAEL
IPC: C07C7/10
Filed: 1957-12-11
Abstract: A benzene-containing hydrocarbon fraction obtained by the liquid sulphur dioxide extraction of a mixture containing benzene and C6 and C7 naphthenes and paraffins, such fraction containing 50-60 volume per cent of benzene, is distilled to obtain azeotropes of benzene with the naphthenes and paraffins overhead and pure benzene is recovered as bottoms.  The distillation preferably uses a reflux ratio of 5:1 to 15:1, and is preferably carried out after stripping off the sulphur dioxide.  The overhead which contains about 10 per cent by volume of benzene may be recycled to the sulphur dioxide extraction.ALSO:Benzene is recovered from mixtures thereof with C6 and C7 paraffins and naphthenes by solvent extraction with liquid sulphur dioxide to obtain an extract containing 50-60 volume per cent of benzene and distilling the extract to remove overhead a fraction containing azeotropes of benzene with paraffins and naphthenes and recovering pure benzene as bottoms. The starting fraction may boil in the range 145-170 DEG  F.  The extraction may be carried out at -20 DEG  to -50 DEG  F. with a sulphur dioxide to hydrocarbon volume ratio of 3 : 1 to 1 : 1.  Sulphur dioxide is preferably stripped from the extract before the subsequent distillation.  The distillation may employ a reflux ratio of 5 : 1 to 15 : 1.  The amount of benzene in the overhead fraction may be about 10 per cent by volume and this fraction is preferably recycled to the extraction stage.
Patent GB-1404260-A (GB)
Title: Elastic waist construction for garment
IPC: A41D1/00
Filed: 1973-08-15
Abstract: 1404260 Garments with endless waist bands A KOVES 15 Aug 1973 [18 Aug 1972] 38581/73 Heading A3V A garment comprises an endless waist portion 18 of stretchable fabric contoured to the general shape of the waist area of an intended wearer, a continuous waist band 11 at least partly exposed and located on the inside of the waist portion 18 such band being formed entirely of a strip of foundation garment material e.g. spandex which is cut and joined so as to conform biaxially to the waist portion, a second continuous band 21 of resilient material which is narrower than the waist band 11 and has a substantially cylindrical shape, and at least one row of stretchable stitches 17 securing the bands to the waist portion 18. The waist portion 18 may be formed of a biaxially stretchable Jersey material and is folded inwardly to provide an inner band 20. The second band 21 may be an elastic ribbon or may be formed of rubber. The relative positions of the waist band 11, second band 21 and inner band 20 may be interchanged and the stitches 17, either a single row of chain stitching or a pair of interlinked parallel rows as shown, may be hidden as in Fig. 2 or exposed on the outside of the waist portion 18. The waist construction is applicable to neither garments such as skirts, slacks, trousers or shorts or to upper garments such as shirts, blouses or sweaters.
Patent GB-307488-A (GB)
Title: Improvements in telegraph systems
IPC: H04L5/18
Filed: 1928-12-31
Abstract: 307,488. Electrical Research Products, Inc., (Assignees of Knoop, W. A.). March 9, 1928, [Convention date]. Controlling duration and direction of simplex traffic.-In a simplex system in which the direction of traffic is periodically reversed, the time of reversal is determined by the coincident closure of two gaps which are arranged in series and are Intermittently closed under the control of two shafts rotating at slightly different speeds. In the arrangement shown in the drawing the main shaft 4 is driven by a synchronized motor 5 and drives the receiver REC. transmitter TR, and two worm gears 7. 8, provided respectively with 71 and 72 teeth. The circuit of the reversing magnet 32 is completed in the situation shown, (conclusion of the transmission period), from battery 33 through brush 38 on main shaft 4, segment 9 which makes circuit once for every 72 revolutions of the main shaft, slip ring 18, segment 17a which makes' circuit once for every 71 revolutions of the main shaft, switch RS and cam contact 28. (The contacts at 6, 9, 17a are completed coincidently in this manner once for every 71 x 72 or 5112 revolutions of the main shaft). The magnet 32 acts momentarily to withdraw the catch 37 from the stop-disc so that the shaft 30 (which is driven either by an independent motor or by frictional engagement at 21 with shaft 10) makes half a revolution, disabling the transmitter TR at 35, completing a circuit for the receiver REC at 34, and reversing at 36 the polarity of the current through the relay 3, which thereupon connects the line 1 to the receiver REC instead of the transmiter TR. At the same time the reversing magnet 32 is disconnected from the switch RS at 28 and connected to the switch TS at 27. The switch RS may be set so as to substitute for the disc 17 any one of the discs 12 - - 16, which revolve together but have different numbers of contacts; in this way the length of the transmission periods can be set as desired. Similarly the length of the reception periods is determined by the setting of the switch TS, and the times alloted to receiving and sending respectively can therefore be made to depend on the traffic conditions. A similar arrangement is provided at the distant station, and reversal occurs simultaneously at the two stations since their main shafts 4 are synchronized in the usual manner.
Patent GB-357889-A (GB)
Title: Improvements in and relating to steam turbine plants
IPC: F01K11/02
Filed: 1930-12-24
Abstract: <PICT:0357889/III/1> A steam turbine plant 1 has a condenser rigidly fixed to each exhaust pipe 15 on each side of a middle supporting structure 4. The condensers are supported on the latter by means of guides 17 which allow movement due to expansion and also supported on springs 19.
Patent GB-904575-A (GB)
Title: Process for the production of safety glass
IPC: B32B17/10
Filed: 1960-11-14
Abstract: 904,575. Laminates. RHONE-POULENC S.A. Nov. 14, 1960 [Dec. 3, 1959], No. 39093/60. Class 140. Plane or curved glass laminates, for use, for example, as motor car wind screens or spherical mirrors, are made by subjecting an assembly of glass sheets, with interposed sheets of thermoplastic material such as polyvinyl butyral, to heating, as in an autoclave, first under atmospheric pressure and then under higher gas pressure, and cooling under the higher pressure. The assembly is held during treatment by peripheral clamps or, in the case of a pile of, for example, 30 windscreen units each comprising two sheets of curved glass with interposed polyvinyl butyrol, by separating the units by peripheral felt strips and weighting the pile with, for example, four, sheets of the unlaminated glass. Heating wires or other inserts may be provided between the constituent glass sheets of the laminates. Specification 755,809 is referred to.
Patent GB-1080359-A (GB)
Title: Fuel injection pumps for internal combustion engines
IPC: F02M59/34
Filed: 1964-09-25
Abstract: 1,080,359. Fuel injection pumps; starting fuel injection pumps. J. L. GRATZMULLER. Sept.25, 1964 [Sept. 25, 1963; Aug. 27, 1964], No. 39099/64. Headings F1A and F1B. In a fuel injection pump the quantity of fuel delivered is controlled by a calibrated constriction in the suction pipe to an injection cylinder or cylinders or the cylinder of a piston hydraulically actuating an injection piston. The piston or pistons drawing liquid through the calibrated constriction have a reduced diameter portion containing a liquid, e. g. fuel, which forms an annular liquid seal to prevent the entry of air into the cylinder or cylinders. In the embodiment illustrated, fuel drawn through the calibrated constriction 28 from a reservoir 18 is delivered to an injector 13 until a spill passage 14, 52 is opened by a cam actuated valve 40. The reduced diameter piston portion 46 communicates with the reservoir 18. The spill passage 14, 52 may be opened for a first portion of the delivery stroke of the piston 4. To stop fuel delivery the valve 40 may be held open by means of a manual lever 40 and to provide excess fuel for starting a valve in the spill passage 52 is closed. The spill may be effected through the suction conduit by opening the suction valve (35), Fig. 3 (not shown), during the pump delivery stroke. A pair of calibrated constrictions (28 and 70), Fig. 5 (not shown), may be provided in the suction conduit. One of the constrictions (28) may be closed by a needle valve (66), the second constriction (70) then acting as a slow running jet. In a further embodiment, Fig. 6 (not shown), an injection piston (82) is actuated hydraulically by a piston (74) via an actuator piston (176). The actuator piston (176) has a stroke dependent upon the effective displacement of the piston (74), which is controlled by the calibrated constriction (28) and the piston head (58). In another embodiment, Fig. 7 (not shown), a pair of pistons (74', 82'), operating in connected cylinders (80', 103) draw fuel through the calibrated constriction (28), the smaller piston (82') delivers fuel through a delivery valve (20) and the pistons together spill fuel to the suction. The pistons are actuated by cams (118 and 124) on a cam-shaft (132). In a still further embodiment, Fig. 9 (not shown), a small piston (82") is movable within a larger piston (74") by means of a tappet (128') actuated by a cam, eccentric or cam operated rocker arm (148). The small piston (82") delivers fuel through a delivery valve (20) and the pistons move together to spill fuel, drawn into the common chamber (136) during the suction strokes, through the calibrated constriction (28').
Patent GB-934749-A (GB)
Title: Acoustical generator and seismic exploring system
IPC: G01V1/104
Filed: 1959-11-18
Abstract: 934,749. Generating combustion products under pressure. SOCONY MOBIL OIL CO. Inc. Nov. 18, 1959, No. 39187/59. Class 51 (1). [Also in Groups XXXVIII and XL (c)] An acoustical generator for producing seismic waves comprises a combustion chamber provided with an elongated open-ended extension piece for transmitting acoustic pulses into land or water, means for loading the chamber and the extension piece with a combustible gas mixture, and means for periodically igniting the gas mixture in the chamber so as to initiate a combustion wave which travels downward through the extension piece, the extension piece or means therein causing an increase in the velocity of the wave toward detonation velocity as it travels down the extension piece. The generator is particularly suitable for echo sounding and geophysical prospecting (see Group XL (c)). Combustible fluid, e.g. propane, enters mixing chamber 40, Fig. 3, via port 41 and oxygencontaining fluid enters via port 42; the fluids, which are under pressure, pass through screens 43a, 43b, forming a flame barrier, into ignition chamber 44 which incorporates a sparking-plug igniter. Elongated tubes 51 . . . 55 include elements, e.g. 56, with tapered bores to couple the elongated tubes to further tubes, e.g. 59. Once ignition is established, the flame front proceeds rapidly down the elongated tubes with an increasing speed exceeding that of sound and detonation occurs. The length/diameter ratio of tubes 51 ... 55 lies between forty and eighty. The fluid mixtures may alternatively be hydrogen and air or oxygen, or acetylene and air or oxygen; atomized liquids may also be used. Over land areas it is preferred to couple the generator via a pool of water, since this is stated to lead to higher energy efficiency and to reduction of noise due to air waves. Or a bag of coupling liquid in a flexible container attached to the generator may be provided, Fig. 6 (not shown). Substantially continuous flow of combustible mixture under pressure is stated to prevent ingress of the coupling liquid. To increase wave frequency and reduce pulse energy in shallow strata prospecting only one elongated tube is made effective, Fig. 8 (not shown). The frequency content of the pulses is varied by changing the richness of the combustible mixture. Pulse rates in the range 100 to several thousand per second may be employed.
Patent GB-983181-A (GB)
Title: Improved hot water boiler
IPC: F24B1/183
Filed: 1963-10-04
Abstract: 983,181. Hot-water boilers. J. H. BALLANTYNE. Oct. 4, 1963, No. 39282/63. Heading F4A. A hot water boiler for use as a back boiler of a fire grate or for fitting in the fireplace flue comprises two manifolds 1, 2 connected by vertical tubes 3 and by semicircular smaller bore tubes 4, the manifolds having respective connections 5, 6 for flow and return pipes to a storage cylinder. Fig. 2 shows the boiler mounted as the back boiler of a domestic grate. In operation, water circulates rapidly between the manifolds, flowing upwardly in the tubes 4 and downwardly in the tubes 3.
Patent GB-1073035-A (GB)
Title: Improvements in or relating to electric modulating and compandor circuit arrangements
IPC: H03M1/00
Filed: 1965-09-15
Abstract: 1,073,035. Pulse modulators. SIEMENS A.G. Sept. 15, 1965 [Sept. 16, 1964], No, 39351/65. Heading G4H. [Also in Division H4] In an electric modulator and compander circuit the inputs are sampled and successively passed to a capacitor and transistor network C1, Tr, the output from which is a series of pulse-duration modulated signals which are used to control a start-stop generator G feeding pulses to a binary counter Z. The outputs from the various stages of the counter are fed to a delay line La to give a serial output A. The outputs from the fourth and fifth stages K4, K5 of the counter are also fed via logic circuitry to the resistor transistor circuitry so that the rate of discharge of the capacitor is slowed down after the counter has reached a count of eight and raised to its original discharge rate when the counter has reached twenty-four.
Patent GB-848753-A (GB)
Title: Improvements in or relating to ethylene polymers
IPC: C08F8/50
Filed: 1956-12-27
Abstract: Low pressure, linear polyethylene having a ratio of weight average molecular weight to number average molecular weight of less than 4 : 1 may be obtained either (i) by fractionation wherein a non-solvent is added in one or more stages to a solution of low pressure polyethylene, e.g. addition of propanol to a xylene solution, followed by separation of the precipitated polymer, or (ii) by degradation wherein a solution of low pressure polyethylene is subjected to ultra-sonic vibrations.  Other properties of the product are specified.
Patent GB-1308278-A (GB)
Title: Carbazine acid esters and salts thereof processes for their manu facture and their use as ectoparasiticides
IPC: C07D233/52
Filed: 1971-08-28
Abstract: 1308278 Arylhydrazino - 2 - imidazolines BAYER AG 23 Aug 1971 [22 Aug 1970] 39396/71 Heading C2C The invention comprises compounds of formula and salts thereof, in which R<SP>1</SP> is a straight or branched alkyl radical with 1-18 carbon atoms which may be substituted with F, Cl, Br, OH, alkyloxy, alkylthio, or optionally substituted aryl or aryloxy; an alkenyl radical with 3-10 carbon atoms; a cycloaliphatic radical with 3-6 carbon atoms; or a heterocyclic radical; and R<SP>2</SP> is one or more of H, F, Cl, Br, NO 2 , amino, carboxyl, carboxyalkyl, OH, alkyloxy, alkyl, or trifluoromethyl. The compounds may be prepared by reacting the corresponding phenylhydrazino-2-imidazoline with R<SP>1</SP>-O-CO-X where X may be F, Cl, Br, OR or OCOOR where R is R<SP>1</SP> or a different alkyl or aryl radical. Salts may be formed using hydrochloric, phosphoric, sulphuric, carboxylic, or sulphonic acids. The compounds are acaricides.
Patent GB-1388437-A (GB)
Title: Electronic switching circuits
IPC: H03K17/725
Filed: 1972-08-25
Abstract: 1388437 Control systems for consuming apparatus NATIONAL RESEARCH DEVELOPMENT CORP 23 May 1973 [25 Aug 1972] 39694/72 Heading H2H [Also in Division H1] A circuit for controlling the alternating current flowing in a load comprises a bidirectional rectifying device, the triggering signals for which are developed by a control circuit which includes two resistors, a rectifier bridge and a device having controllable conductivity. A load 2 is fed from an A.C. source 1 by way of a pair of thyristors 3, 4 connected in reverse parallel configuration. The main electrodes of the thyristors are connected to the input terminals of a rectifier bridge 9-12 by way of resistors 5, 7 respectively, each resistor being shunted by a diode 6, 8 respectively. Also connected across the main electrodes of the thyristors is a voltage multiplying circuit 22 whereby a steady voltage of about eight volts is developed across a Zener diode 24. The output terminals of the bridge 9-12, at which a voltage of eight volts may also appear, are connected to a super-alpha pair of transistors 13, 14; and a further transistor 17 has its base connected to the output voltage of the bridge 9-12 by way of resistors 15, 16. An opto-electronic isolator device 26 is connected to the output voltage at the Zener diode 24. When there is no input to the device 26, the transistors 17, 13, 14 are non-conductive and the thyristors 3, 4 are therefore non-conductive, the load 2 remains unenergized. When a control input is applied to the device 26 it becomes conductive applying the voltage at the Zener diode 24 to the emitter of transistor 17. This transistor does not become conductive until the output voltage of the rectifier bridge 9-12 drops to zero at the next zero crossing of the A.C. supply voltage waveform. Transistor 17 then conducts, causing transistors 13, 14 to conduct causing the bridge 9-12 to have low impedance and an appreciable current flows through one or other diode 6, 8 and resistor 5, 7 according to the polarity of the supply voltage at the time. One of the thyristors 3 or 4 is thus triggered immediately after the zero crossing of the supply voltage with the subsequent triggering of the other at the beginning of the next half cycle of the supply waveform. The voltage across the Zener diode 24 maintains the transistor 17 conductive and hence the thyristors 3, 4, whilst the device 26 is conductive. The circuit thus ensures triggering of the thyristors at zero voltage crossings and thereby avoids transients. In other embodiments the thyristor pair is replaced by a triac and the transistor pair by a thyristor. Furthermore the voltage multiplier may be replaced by a dioderesistor combination connected to one of the supply lines. The switching circuit may be used in parallel with an electro-mechanical switch to control the load current (see Heading H1N).
Patent GB-860748-A (GB)
Title: Improvements relating to apparatus for measuring ultra high frequencies
IPC: G01R23/04
Filed: 1958-12-09
Abstract: 860,748. Frequency meters. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Dec. 9, 1958 [Dec. 10, 1957], No. 39699/58. Class 37. A microwave absorption frequency meter comprises a directional coupler 1 formed by two slot coupled parallel waveguides 2, 4, a variable impedance 6 comprising a piston tuned resonant cavity coupled to one end of waveguide 4, a current detector and indicator 11 at the other end of waveguide 4, and means 9 for indicating the position of the variable member 8 of the variable impedance on a frequency-calibrated scale when the detected current is minimum. This condition occurs at resonance. The signal to be measured is applied to the meter through waveguide 2 by means of a flange coupling 13.
Patent GB-1387533-A (GB)
Title: Adaptive braking system
IPC: B60T13/16
Filed: 1973-08-22
Abstract: 1387533 Antiskid braking systems BENDIX CORP 22 Aug 1973 [18 Sept 1972] 39749/73 Heading F2F An antiskid braking system comprises pressure developing means in the form of a dual system master cylinder 20 with hydraulic booster 26 and a proportioning valve 10 between the master cylinder 20 and rear brake cylinders 18, electrically actuated means in the form of a solenoid operated valve being responsive to an electrical signal generated in response to an incipient skidding condition to close the proportioning valve. The valve 10 is operated during an antiskid control cycle by a fluid motor 74, which includes a piston 76 and rod 80 engaging the proportioning piston 40, controlled by the solenoid-operated valve so that a poppet member 60 seals off an axial passage 42 to prevent build up of pressure when a skid is imminent. In a modification Fig. 3, a vacuum operated motor 114 controlled by a three-way solenoid valve 126 operates the valve 10. (For Figures see next page.)