baber/WOPTO huggingface dataset:
Patent GB-1235202-A (GB)
Title: Improved gas blast circuit breaker
IPC: H01H33/873
Filed: 1968-09-03
Abstract: 1,235,202. Gas-blast circuit-breakers. I-T-E IMPERIAL CORP. 3 Sept., 1968 [6 Nov., 1967], No. 41754/68. Heading H1N. A gas-blast circuit-breaker has a fixed contact 53 having a central opening, an elongated axially-movable contact member 86 with a plurality of contact fingers 60, 66 co-operating with the fixed contact, a cylindrical insulating chamber 125 surrounding the movable contact and movable therewith, and biasing means (indicated at 131, 133) biasing the chamber away from the fixed contact. One end 128 of the chamber engages an annular surface of the fixed contact when the contacts are closed. The fixed contact 53 is screwed into a support 35 which is slotted as indicated at 43 so that the fixed contact may be locked in position by tightening screws 57. The movable contact member 86 carries an arcing contact 85 and a retainer 80 which supports a ring of contact fingers 60, 66 which have arc-resistant inserts 72 biased inwardly by leaf springs 76, 77. These springs are located by projections 74, 75 on the contact fingers and are held in biasing engagement with insulating buttons 78, 79 on the fingers 60, 66 by a spring retainer 81. The lower ends of the fingers slide on a fixed member 89 which has insulating guide rings 107, 108 in which the contact member 86 slides. The member 86 is connected to an ear 152 extending from a cylindrical blast valve 158. Two of the circuitbreaker assemblies may be mounted on a common blast valve assembly which is mounted on a high pressure receiver, e.g. of air or sulphurhexafluoride. This and another similar assembly are each mounted on an insulating pedestal within an outer tank containing the gas at a lower pressure. Three such arrangements may form a four-break three-phase circuit-breake Figs.25.. 28 (not shown).
Patent GB-1553333-A (GB)
Title: Process for the mononitration of anthraquinone
IPC: C07C205/47
Filed: 1977-10-10
Abstract: 1-Nitroanthraquinone is prepared in high yields by mononitration of anthraquinone with nitric acid/sulphuric acid mixtures. Anthraquinone is nitrated in a nitric acid/sulphuric acid mixture in which the weight ratio of nitric acid to sulphuric acid is 1 : 1 to 2 : 1, in which the weight ratio of sulphuric acid to anthraquinone is 0.5 : 1 to 1 : 1 and in which the weight ratio of sulphuric acid to water is 2.5 : 1 to 5.5 : 1, the weight ratios relating to the sum of the materials used, at temperatures in the range 45 to 70 DEG C until the anthraquinone content relative to the sum of the anthraquinone compounds is 3% by weight or less. The 1-nitroanthraquinone obtained can be used for the preparation of 1-aminoanthraquinone.
Patent GB-1459883-A (GB)
Title: Control arrangement for vehicle direction indicators with automa tic return
IPC: B60Q1/42
Filed: 1974-09-27
Abstract: 1459883 Mechanical switches JAEGER 27 Sept 1974 [28 Sept 1973] 42087/74 Heading H1N [Also in Division G4] In an automatically cancellable directionindicator vehicle switch a trigger 26 has a rigid actuator portion 32 for engagement with a lug 33 (Fig. 7) on the steering shaft and a resiliently deformable portion 35 arranged when portion 32 is actuated by the lug 33 to engage a respective one of two stops 36, 37. In the embodiment the end of a control lever 1 is introduced into a contact carrier 2 within a casing 4 closed by a cover 5. A conductive strip 7, Fig. 3, is mounted beneath assembly 2, is resiliently urged downwards by springs and co-operates with studs 9 and 8 or 10 (as appropriate) fixed on the base of casing 4 by a rocking action; stud 9 is connected to positive supply and studs 8, 10 to the means indicating change of direction. One end of the contact carrier is cut as a cam face with five notches Fig. 8 (not shown) on which a pin 17 moves and is biased by leaf springs 22. Trigger 26 is held in its neutral position by springs 30. If a small circular movement is given to lever 1 the contact carrier is carried in the same direction, the cam (11, Fig. 8, not shown) is displaced relative to pin 17 to cause the latter to occupy on intermediate, unstable, notch and the circuit to energize the appropriate direction-indicator is made. On further lever movement pin 17 reaches a far, stable, notch; Fig. 4 corresponds to this position: on return of the steering shaft lug 33 causes part 35 of the trigger to exert force on stop 37 and thereby carry the contact carrier with it, pin 17 moving into its neutral position on the cam face. If lever 1 is held in a stable position against the automatic return action the danger of breakage of the stops fixed to the contact carrier is avoided by the resilient deformability of portion 35. A warning device is actuatable by way of ball 38, Fig. 1 and a contact stud Fig. 5 (not shown).
Patent GB-1043789-A (GB)
Title: Method of removing carbon dioxide from gaseous mixtures
IPC: B01D53/14
Filed: 1964-10-15
Abstract: In a process for removing carbon dioxide from a gaseous mixture using an isothermal cycle of absorption with an aqueous solution containing an alkali and As2O3; and regeneration of the exhausted scrubbing liquor by stripping with stream, the absorption and regenerating steps are carried out an elevated temperature between 80 DEG  and 100 DEG  C.  If desired, the major portion of the carbon dioxide may be removed in a first absorption regeneration cycle at below 100 DEG  C. and a further amount of carbon dioxide may be removed in a second cycle which is effected at a temperature above 100 DEG  C.  The preferred absorbent is a solution of potassium carbonate, exemplified as 25% by weight K2CO3 solution containing 140 g/litre of As2O3.
Patent GB-1449074-A (GB)
Title: Arrangement in a centrifugal separator
Inventor: DAHLBERG B I
IPC: B04B11/02
Filed: 1974-09-30
Abstract: 1449074 Discharging solids from centrifuge ALFA LAVAL AB 30 Sept 1974 [1 Oct 1973] 42442/74 Heading B2P A centrifugal separator comprises a rotor 1 having an outlet 5 for discharging separated solids during rotation of the rotor, a stationary member 6 extending around the axis of the rotor for receiving solids discharged through the outlet 5, and means 12, 9 for supplying flushing liquid to the member 6 to convey the solids received therein to an outlet 10 of the member, the latter including means 11 for maintaining a layer of liquid of predetermined depth within it, the layer of liquid rotating around the rotor axis, in use of the separator, and receiving the solids discharged from the rotor. The separator includes a worm conveyor 2 for moving the solids towards a number of discharge outlets 5. Flushing liquid is fed by a pump 12 through an inlet 9 opening tangentially into the member 6 which is in the form of a cylindrical housing having end walls 7, 8 and a tangential outlet 10. The means 11 is an annular partition wall with an inner diameter greater than those of end walls 7 and 8. In operation, liquid delivered through the inlet 9 establishes a rotating liquid layer in the housing 6 between the end wall 7 and the partition wall 11. The solids, e.g. starch, discharged through the openings 5 are received by, and dispersed in, the rotating liquid layer, the liquid flowing with the solids over the partition wall 11 and being discharged through the outlet 10. The inlet 10 is so arranged that the liquid layer in the housing rotates in the same direction as the rotor. Rapid rotation of the liquid layer prevents deposition of the solids in the housing and clods of solids remain in the liquid until they are broken up and dispersed in the liquid so that they can escape over the wall 11. A portion of the dispersion discharged through the outlet 10 may be returned to the inlet 9. In another arrangement, the housing 6 may be dispersed close to the rotor 1 so that the liquid layer is caused to rotate only by the strong air currents present in the vicinity of the rotating rotor. Rotation of the liquid layer, in the latter case, may be assisted by flushing liquid supplied to the housing in the proper direction. Blades may be fastened to the rotor 1 to assist rotation of the flushing liquid in the housing 6.
Patent GB-1101859-A (GB)
Title: Power generating units
IPC: F01D1/00
Filed: 1965-10-08
Abstract: 1,101,859. Turbine power plant. L. BRONICKI. Oct. 8, 1965 [Dec. 25, 1964; April 20, 1965], No. 42705/65. Headings F1Q and F1T. The invention relates to a power plant comprising a boiler 1 for evaporation of the working medium, a turbine 11 fed with vapour from the boiler, a condenser 18 and means 25 for recycling condensed working medium to the boiler. According to the invention the plant comprises means 10 for varying the inlet density of the vapour fed from the boiler to the turbine and means 23 on the exhaust side of the turbine for regulating the density of the turbine exhaust vapour in accordance with the variation of the inlet density, thereby to prevent a substantial drop of the nozzle efficiency. The means for varying the inlet density may be means for control of the boiler temperature or means for throttling the vapour flow from the boiler to the turbine nozzle. The means for regulating the inlet density may be governed by means sensitive to variations in the load on the turbine. The heat supply to the boiler may be variable. The boiler may be heated by a burner or by a collector of solar heat radiation. The means for regulating the density of the turbine exhaust vapour may be means for controlling the condensing temperature or means for damping the vapour flow located between the turbine and the condenser. The means for controlling the condensing temperature may be an adjustable thermo-sensitive or pressuresensitive means responding to the condensing temperature or pressure and governing the flow of coolant to the condenser. The means for controlling the condensing temperature may comprise a lever acted on by the inlet pressure and the outlet pressure which lever governs the flow of coolant through the condenser. The plant may be designed for constant power output under widely varying condenser temperatures, means being provided for controlling the boiler temperature in dependence on the condenser temperature. The means for regulating the density of the turbine exhaust vapour may be at least one auxiliary nozzle fitted between the turbine wheel and the condenser. An auxiliary nozzle may be located between the boiler and the turbine nozzles. The means sensitive to variations in the load on the turbine may be a mechanical device detecting the speed of rotation of the turbine shaft or means sensitive to variations in the output voltage of an electric generator. The working medium may be O-dichlorobenzene vapour. The invention is applicable to power plants with multi-stage turbines.
Patent GB-1517376-A (GB)
Title: Fabric treating articles with conditioning properties
IPC: C11D3/50
Filed: 1975-10-17
Abstract: 1517376 Fabric treating articles PROCTER & GAMBLE CO 17 Oct 1975 [18 Oct 1974] 42713/75 Heading DIP [Also in Division B5] A fabric treating article providing improved fabric conditioning properties, comprises certain water-insoluble particulate materials and optionally a fabric softener together with a dispensing means adapted for use in an automatic dryer. The particulate material must have (i) a maximum overall particle length of 1-50. microns (ii) a particle shape having an anisotropy (axial ratio) of from 5:1 to 1:1, (iii) a hardness less than 5.5 on the Mohs scale, (iv) a melting temperature above 150‹C and (v) substantial freedom from exchangeable calcium and magnesium ions. Suitable materials include water insoluble starches (having a swelling power less than 15 at 65‹C) e.g. corn, wheat and rice starches, starches which have been surface esterified or etherified, to provide water repellancy, glass microballoons, glass, coated glass and ceramic beads, and beads of synthetic polymers e.g. polymethylmethacrylate, PTFE, polystyrene, poly (styrenedivinylbenzene), poly (melamine formaldehyde) and poly (ureaformaldehyde). The materials confer conditioning benefits of antiwrinkling, ease of folding, enhanced drapability and ease of ironing. The article preferably also comprises a meltable fabric softener having a softening point above 38‹C and which may also confer antistatic properties. Preferred softeners include quaternary ammonium compounds having two fatty-alkyl (10-20c) substituents, alkyl (10-22c) mono- and di-sorbitan esters, water insoluble fatty alcohols (crispening agents), fatty acids, ether- and esteralcohols, and mono- and di-glycerides. The dispensing means may be a polyurethane foam pouch, or a wax-sealed paper bag, but is preferably in the form of a sheet of paper, or woven or non-woven cloth, which may be provided with slits or holes, to prevent the article blocking an air passage. A preferred paper substrate is a compressible, laminated, calendered, multi-ply, absorbent crepe paper structure. Preferred non-woven substrates are air- or water-laid bonded products comprising natural or synthetic fibres. The particulate material may be applied to the substrate immediately after it has been impregnated with a melt of the softening agent or an aqueous solution of a binder e.g. gelatin, or as a slurry in a mixture of the softener and a carrier e.g. isopropanol. In Example I the fabric treating article is used to condition mixed cotton, cotton/polyester, polyester and polyester/cotton blend clothes in an automatic dryer.
Patent GB-925019-A (GB)
Title: Railway signalling track circuit
Inventor: WRIGHT MAURICE JAMES
IPC: B61L1/18
Filed: 1959-12-16
Abstract: 925,019. Converting. JOSEPH LUCAS (INDUSTRIES) Ltd. Dec. 6, 1960 [Dec. 16, 1959], No. 42736/59. Class 38 (2). [Also in Groups XXX and XL (c)] A pulse transmitter for a railway signalling track circuit (see Group XXX) includes a transistor blocking oscillator circuit for converting a 3 v. D.C. supply across terminals 5 and 6 to 20 v. D.C., which comprises a transistor 4 and a saturable transformer including primary, feed-back and output windings 7, 3 and 8, respectively. The primary current oscillates between zero and a value which saturates the transformer and provides a pulsed output which is rectified and stored in capacitor 10. A Zener diode 11 limits the D.C. voltage across capacitor 10 to 20 volts.
Patent GB-1220439-A (GB)
Title: Mixing apparatus
IPC: B01F5/00
Filed: 1969-08-27
Abstract: 1,220,439. Mixing apparatus. CANADIAN PATENTS & DEVELOPMENT Ltd. 27 Aug., 1969 [28 Aug., 1968], No. 42756/69. Heading B1C. Apparatus for mixing solids and liquids to form slurries thereof comprises a tank 10 for liquids having an upper section 11 of major volume and a lower section 13 of minor volume connected to the upper section by a conical section 15 and closed by a bottom wall 18 one or more outlet pipes 27 tangentially extending from the lower section, and an open-ended tank 19 for solids disposed within tank 10. In use, the flow of liquids through lower section 13 and outlet pipe(s) 27 causes solids to be entrained from the bottom of tank 19. The flow of solids may be controlled by regulating the gap between the end 26 of tank 19 and the bottom wall 18 of tank 10, and the flow of liquid between conical section 15 and lower section 13 of tank 10 may be controlled by means of a vertically adjustable collar 35.
Patent GB-1105888-A (GB)
Title: Improvements relating to valves for rotary drums
Inventor: WINTHER HENNING
IPC: F27B7/20
Filed: 1966-09-26
Abstract: 1,105,888. Charging rotary kilns. F. L. SMIDTH & CO. A/S. 26 Sept., 1966, No. 42902/66. Heading F4B. A charging opening in the wall of a rotary kiln 1 is protected from entry of air by valves each comprising a chamber, e.g. 30 or 32, having three curved peripheral walls, two of which are open, and a plate, e.g. 33 or 34 which is free to tumble as the kiln rotates and thus to open and close the valve alternately. As shown, two valves are mounted in series, connected by a channel 31. Dust carried out of the kiln by waste gases is recovered by an electrostatic precipitator (4, Fig. 1) and carried to an inlet 28 to a fixed housing 15 from which it is reintroduced to the kiln through the valves by a scoop 22.
Patent GB-1433164-A (GB)
Title: Cutter bit assemblies
IPC: E21C27/44
Filed: 1973-09-13
Abstract: 1433164 Cutter bit assemblies GEWERKSCHAFT EISENHUTTE WESTFALIA 13 Sept 1973 [14 Sept 1972] 42998/73 Heading E1F A mineral-mining cutter bit assembly comprises a holder 10 having a base portion and side and end walls defining a cavity 12, one of the end walls having an opening 15 extending through the wall into the cavity, a bit 11 having a root portion 14 adapted to be received in the cavity and to cooperate with the holder at the end opposite the aperture, the root portion having a screw threaded bore 22 which aligns with the aperture 20 when the root portion is positioned within the cavity, and a screw 21 adapted to be screwed through the aperture into the bore, the screw having a head 22 for engagement with at least part of the periphery of the aperture to retain the bit in place. Preferably the head is cylindrical and engages through an arc of about 180 with a complementary arcuate recess in a shoulder of the end wall partly defining the aperture 20. A tapering shoulder 25 between the head and threaded shank of the screw is provided for engaging with a complementary shoulder 26 of the bore 22.
Patent GB-1432079-A (GB)
Title: Production of cold soluble tea concentrates and powders
IPC: A23F3/20
Filed: 1974-10-04
Abstract: 1432079 Tea concentrate G R ROBERTS U L L DESILVA and M A V DEVANATHAN 4 Oct 1974 [12 Oct 1973] 43201/74 Heading A2B A tea concentrate is prepared by removing non-phenolic high molecular wt. constituents of tea cream from a aqueous solution of soluble solids of tea either by (a) solvent extraction of a tea liquor such that the high mol. wt. non-phenolics are removed but low molecular wt. compounds remain OR (b) separating the tea cream and subjecting the cream to solvent extraction to remove the high molecular wt. non-phenolics, and returning at least a part of the remaining low molecular wt. compounds to the liquor; followed by concentrating the solution to a syrup or dry powder. Suitable solvents include benzene, dichloro-ethylene, methylene chloride, trichloroethylene and chloroform. The raffinate produced from the tea cream extraction may be converted to a dry powder and separately used as an additive to tea liquors.
Patent GB-1410337-A (GB)
Title: Pulse-height discriminator circuits
IPC: H03D/
Filed: 1972-09-19
Abstract: 1410337 Transistor pulse height discriminator circuits SIEMENS AG 19 Sept 1972 [20 Sept 1971] 43310/72 Heading H3T In a pulse height discriminator circuit, in which at least one pulse height discriminator transistor T2, T3, Fig. 1 is provided which is switched conductive to emit an output signal across a collector impedance R3, R4 when an input signal that is applied to its base via a capacitor Ck exceeds a given threshold, the emitter of a reference transistor T1 is connected directly to the emitter of the or each discriminator transistor and to one supply terminal via a resistor R5, the collector of the reference transistor T1 is connected directly to another supply terminal and the reference transistor T1 has temperature dependant electrical characteristics which are identical to those of the or each disciminator transistor so that a predetermined D.C. reference voltage UR applied to the base of the reference transistor T1 serves as the threshold voltage of the or each discriminator transistor T2, T3 independently of the input signal. The reference and discriminator transistors can be formed in a common monolithic integrated circuit so that their base-emitter voltages are identical for a given base current. If the reference voltage UR is independent of temperature then the threshold voltage of the or each discriminator transistor T2, T3 is independent of temperature. Clamping diodes D1 and D2 prevent input signals at E1, E2 exceeding the permissible blocking voltage of the transistors T2, T3. If the reference voltage UR is selected to be zero the discriminator acts as a zero detector. Two different reference voltages UR may be selected by a transistor T4, Fig. 2. When transistor T4 is driven conductive the capacitor C is discharged and the reference voltage at UR is relatively high. When the transistor T4 is blocked the capacitor C is charged and the reference voltage at UR falls in accordance with the time constant of the charging circuit to a lower level. The discriminator may be used for evaluating the amplitude of input signals supplied by a magnetic head of a magnetic layer store where each block of magnetic store signals starts with a high threshold voltage signal and is then continued either at the high or low threshold voltage.
Patent GB-1475483-A (GB)
Title: Ceramic to metal seal
IPC: C04B37/02
Filed: 1975-10-27
Abstract: 1475483 Ceramic-metal seals UNITED STATES ENERGY RESEARCH & DEVELOPMENT ADMINISTRATION 27 Oct 1975 [28 Jan 1975] 44046/75 Heading B3V A ceramic-metal seal is formed without metallization or atomic cleanliness by chemically cleaning a surface of a ceramic part, positioning a wire-like metal gasket directly on the surface, heating the assembly thus formed to 30%- 75% of the m.p. of the gasket and simultaneously deforming the gasket against the surface by 50-95%. The method may be performed in a vaccum or gaseous atmosphere, e.g. helium. Alumina or zirconia 12, 16 may be sealed to an intermediate wire 10 of Cu, Pt, Ag, Au, Ti or their alloys, or aluminium, the wire being of polygonal or round section, Fig. 1a and Fig. 2a-2c (not shown), which flattens, Fig. 1c (not shown), as the seal forms. The method may also be applicable to borides, silicides, nitrides and carbides of Al, Zr, Be, W and Ti. The surface of the gasket may be roughened, as produced by chemical machining. The gasket and ceramic may be cleaned by brushing and the use of solvents. The process may be applied to sealing the alumina parts (44, 45, 50), Fig. 4 (not shown), of a quartz crystal resonator package with wire gaskets (48, 52). An oxygen probe of zirconia may also be sealed which has an end electrode (60) and an internal electrode (58) connected to the platinum gasket (56). Various temperatures are included in the Specification and treatment times of 10 minutes to 1 hour.
Patent GB-1452841-A (GB)
Title: Diapers
IPC: A61F13/494
Filed: 1974-10-11
Abstract: 1452841 Incontinence napkins COLGATEPALMOLIVE CO 11 Oct 1974 [12 Oct 1973] 44107/74 Heading A5R A diaper 20 having substantially inextensible side edges comprises a fluid-pervious cover sheet 22 having at least one pleat 32 extending laterally across it; a fluid-impervious back sheet 24 having at least one pleat 34 extending laterally across it; and at least two absorbent pads 26a and 26b between the cover sheet and the back sheet arranged with adjacent ends overlapping or substantially abutting, the pads being movable longitudinally relative to one another; whereby on longitudinal tension being applied to the ends of the diaper remote from the sides, the diaper transforms from a generally flat condition to a concave configuration with its sides bowing inwardly in the central region. The margins of the back sheet are folded over the cover sheet and are provided with conventional tape strips for fixing to the body. The central regions of the longitudinal edges of the diaper are folded again over the cover sheet and fixed by adhesive, this being allowed by the shape of the pads which taper towards the longitudinal centre of the diaper. On pulling of ends 44a and 44b of the diaper the pleats 32 and 34 straighten in the middle of the diaper but are held at the edge regions by the folded over portions at 52a and 52b. This produces a concave configuration of the diaper suitable for fitting to the crotch region of the body. The pads need not be separated by tucks of the cover sheet, the overlapping ends may be merely placed one on the other. In another embodiment the pads abut each other in the centre of the diaper and are pulled apart when the ends 44a and 44b are pulled, liquid then being discharged to the back-sheet from where it spreads and is absorbed in the pads. In a third embodiment there are two pleats in the cover sheet and back sheet, and three pads overlapped in turn.