baber/WOPTO huggingface dataset:
Patent GB-1460757-A (GB)
Title: Power supply arrangements
IPC: H02M1/10
Filed: 1974-03-18
Abstract: 1460757 Rectifying BRAUN AG 18 March 1974 [22 March 1973] 32397/76 Divided out of 1460756 Heading H2F A circuit for supplying a D.C. consumer device from mains A.C. comprises a first capacitor 81, a second capacitor 82 connected in parallel with a diode 72 and connected across the mains supply by a thyristor 70, and a voltage sensor 3 which blocks the thyristor when the mains voltage exceeds a threshold value and switches on the thyristor to charge the second capacitor when the mains voltage does not exceed the threshold value, the second capacitor being connected so that its charge increases the voltage on the first capacitor. The consumer device is connected across output terminals V 1 , V 2  and when 220 volts A.C. is supplied to terminals N 1 , N 2 , a transistor 30 conducts to prevent triggering of the thyristor 70. The capacitor 81 is therefore charged with the rectified mains voltage. If 110 volts A.C. is supplied to the terminals N 1 , N 2 , the transistor does not conduct and the thyristor is triggered via a glow discharge tube 60. The voltage on the capacitor 82 is added to the mains voltage to supply a doubled voltage to the consumer device. In a modification, two such circuits are connected in parallel.
Patent GB-264146-A (GB)
Title: Improved treatment of animal fibres
IPC: D06M15/055
Filed: 1926-12-22
Abstract: 264,146. I. G. Farbenindustrie Akt.- Ges. Jan. 7, 1926, [Convention date]. Fibres, treating.-Animal fibres are protected during treatment with chromium compounds, by adding to the treatment bath, sulphite cellulose waste liquor, or a closely-related conversion product thereof, or a salt of lignin sulphonic acid. In an example, to the bichromate-sulphuric acid bath used for removing dye from wool rags, is added sulphite cellulose lye, whereby the wool retains its full feel and its capacity for being spun. Specification 188,632, [Class 15 (ii), Dyeing, Processes &c. for], is referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of cell pitch, or a sugar particularly a pentose or a hexose. This subject-matter does not appear in the Specification as accepted.
Patent GB-195433-A (GB)
Title: Improvements relating to packing means in connection with the blades of steam turbines
IPC: F01D11/08
Filed: 1921-12-03
Abstract: 195,433. Baumann, K., and Metropolitan-Vickers Electrical Co., Ltd. Dec. 3, 1921. Leakage-preventing devices.-In a turbine with two or more tiers of blades 7, 8, packing strips 13, 14 have one or more knifeedges 15 co-operating with the cylindrical surfaces 11 of a dividing wall 6. One packing may have an axially projecting edge 21 co-operating with a shoulder 12. Several alternative methods of securing the strips are described. Specification 14053/15 is referred to.
Patent GB-893322-A (GB)
Title: Lactonols
Inventor: LARDELLI GUIDO
IPC: C07C57/13
Filed: 1957-08-19
Abstract: The invention comprises lactonols of the general formula <FORM:0893322/IV (b)/1> in which R1 and R2 are hydrogen or C1-5 alkyl groups, at least one being such an alkyl group, and R3 is a hydrocarbon radical containing 2-9 carbon atoms, not more than seven being consecutive atoms in an acyclic chain, and being a mono- or di-substituted methyl group which may be alkyl, aralkyl or cycloalkyl.  The lactonols may be prepared by reacting a maleic anhydride <FORM:0893322/IV (b)/2> with a Grignard reagent R3MgX at a temperature of from -95 DEG C. to +5 DEG C., or with an organic zinc halide R3ZnX or an organo cadmium compound R3CdR3, suitably at 70 DEG C.-90 DEG C., and in each case hydrolysing the addition product to convert the organo-metallic group therein to -OH.  Examples (1)-(6) describe the preparation via a Grignard reagent of those lactonols wherein R1 and R2=CH3 and R3 is ethyl, n-propyl and its homologues up to n-heptyl, 3-dimethyl-propyl, diethyl-methyl, cyclohexyl, cyclohexyl-methyl, benzyl, phenethyl; R1 and R2=ethyl and R3 is n-butyl, pentyl or hexyl; R1 and R2=n-butyl and R3 is pentyl; and a mixture of 3- and 4-methyl-5-hydroxy-5-pentyl-2,5-dihydro furan-2-ones.  Examples 7 and 8 describe the preparation of lactonols wherein R1 and R2=CH3 and R3 is n-pentyl using n-pentyl Zn bromide or R3=n-alkyl using di(n-alkyl)cadmium as reactant. Other values for R3 are also given.  The lactonols may be dehydrated as described in Specification 893,321.  The maleic anhydrides may be prepared by (1) a -alkylating a b -keto ester R1COCH2COOR with sodium and an alkyl halide R2X, reacting the product with NaCN and HCl, hydrolysing the so-formed cyanhydrin and dehydrating the resulting hydroxy dicarboxylic acid; (2) reacting a chloro-ketone R1CO.CH(R2)Cl with NaCN, treating the product with HCN in acetic anhydride yielding CH3COOC(R1)(CN).CH(R2)CN which is then hydrolysed and dehydrated; or (3) reacting a bromo-ester Br.CH(R1)COOR with a keto ester R12COCH2COOR, R12 being the group R2 defined above less a CH2- group, treating the product R1.CH(COOR).CH(COOR).COR12 with sodium amalgam and hydrolysing and dehydrating the product.  The di-(n-alkyl)cadmium reactant used in (7) is prepared by refluxing n-alkyl magnesium bromide with cadmium chloride.
Patent GB-814930-A (GB)
Title: Polymerizing olefines
IPC: C08F10/00
Filed: 1955-09-21
Abstract: In a process for polymerizing olefines, the catalyst used is made by grinding together chromium oxide and another oxide preferably alumina or silica to an average particle size less than 5 microns. Preferably not more than 10 per cent of the product has a particle size exceeding 5 microns, and contains up to 10 per cent of chromium oxide of which at least 0.1 per cent is the tri-oxide.  The alumina or silica may be used in the form of a co-precipitated gel, or the silica may be impregnated with an aluminium salt and ignited.  When alumina is used alone it may be pre-treated with HF.  The micromizing of the oxides may be effected in a ball mill, pulverizer, or by treating in a fluidized bed under attrition conditions.  Water or a lubricant may be added to aid subsequent formation of pills or pellets.  The pellets are finally heated to about 1000 DEG  F. in an O-containing gas to activate the catalyst, and may then be ground to about 20 mesh.  To the mixed oxides strontium oxide may be added. Mono-olefines, diolefines and halogenated olefines may be polymerized with the catalyst, in the presence of solvents, in which the catalyst is used as a stationary or fluidized bed. Specifications 790,196, 804,175, [Group IV (a)], and 804,642 are referred to.ALSO:Olefines are polymerized by a catalyst made by grinding together chromium oxide and another oxide preferably silica or alumina to an average particle size less than 5 microns. Preferably not more than 10 per cent of the product has a particle size exceeding 5 microns and contains up to 10 per cent of chromium oxide of which at least 0.1 per cent is trioxide. Alumina and silica may be used in admixture, e.g. as a co-precipitated gel.  If alumina is used alone it may be pre-treated with H.F.  The ground product may be formed into pellets, and then heated to about 1000 DEG  F. in an O-containing gas; the activated product may then be ground to about 20 mesh. Mono-olefines, di-olefines and halogenated olefines may be used, e.g. ethylene up to 1-hexene and 5-methyl-1-hexene; 2-butene, and 2-methyl-2-pentene, and co-polymers of these with ethylene or propylene.  Inert hydrocarbons of 5 to 12 C atoms including paraffinic and naphthenic hydrocarbons, cyclohexane and methyl cyclohexane may be present.  Polymerization may be effected by (1) normal methods of stirring the components in a solvent contained in a reactor at 150 DEG  to 450 DEG  F. and under a pressure of up to 750 p.s.i.; (2) contacting the catalyst with olefine vapours; (3) treating the olefine e.g. ethylene containing some ethane, dilute, with iso-octane, in a fixed or fluidized bed of the catalyst.  Specifications 790,196, 804,175 and 804,642 also are referred to.
Patent GB-820022-A (GB)
Title: Improvements in windscreen cleaning systems and headlight systems for vehicles
IPC: B60S1/12
Filed: 1955-11-15
Abstract: 820,022. Rotary engines. TRICO PRODUCTS CORPORATION. Nov. 15, 1955 [Nov. 15, 1954], No. 32667/55. Class 110 (2). [Also in Groups XI and XXIII] Relates to an oscillating vane type suction motor, in a windscreen cleaning system (see Group XXIII). The motor 7, Fig. 1, has a control valve 10 operable by a cable 11 and knob 12 and is connected to a source of suction by a pipe 13. The motor 7 can oscillate each wiper 2 through two ranges, i.e. the longdistance range in which only the frontal portion 1<1> of the windscreen is wiped or the panoramic range in which both the frontal portion 1<1> and lateral wing portion I<11> are wiped. The wiper range may be altered by applying suction through a pipe 29 to a piston in a chamber 28 to move axially a kicker member on the motor shaft in the manner described in Specification 820,021.
Patent GB-942614-A (GB)
Title: Improvements in or relating to instruments for indicating the "going" of racecourses and the like
IPC: G01N3/40
Filed: 1961-09-12
Abstract: 942,614. Testing hardness. D.N.MENZIES. Aug. 29, 1962 [Sept. 12,1961], No.32688/61. Heading G1S. An instrument for indicating the "going", i.e. hardness, of the ground surface comprises a member 1 contacting the ground 2 and connected by a block 3 to a substantially vertical rod 5 on which a weight 6 slides. The weight is raised to the height of a bracket 10 and allowed to fall on a spring 7 disposed above member 1. The height to which the weight rebounds is a measure of the hardness of the ground 2 and can be read on tape 9 or on graduations on rod 5. Rod 5 may be formed of two interfitting parts or may be shorter and provided with a spring at its upper end and means whereby the weight can be retained in a position compressing the spring so that when the weight is released it is urged down the rod 5 by the spring.
Patent GB-779193-A (GB)
Title: Improvements in or relating to electric control systems
Inventor: TURNER PETER JAMES ASPINALL
IPC: H05B1/02
Filed: 1953-11-27
Abstract: 779,193. Automatic control systems. KELVIN & HUGHES, Ltd. Nov. 29,1954 [Nov. 27, 1953], No. 32990/53. Class 38 (4). In order to reduce " overshoot " in the automatic control system described in Specification 664,118, a capacitance, connected between the anode and grid coils of the valve oscillator, is varied in accordance with the oscillatory state of the valve, whereby the movable element responsive to the variable to be controlled reaches separate " on " and " off " control positions between the coils on either side of a position corresponding to the desired value of the variable. In a specific application, the temperature of a furnace is sensed by a thermocouple 17, Fig. 1, and registered by the indicator arm 19 of a moving coil 18. The movement of the latter causes a metal vane 20 to vary the inductive coupling between anode and grid coils 22, 23 of an oscillator valve 24, the inductive coupling being counteracted by capacitative coupling through a variable condenser 25. In operation, with the temperature below the desired value, the valve 24 oscillates, and a relay in the anode circuit is energized to close its contacts 14, 15, thereby energizing the furnace heater 11, Fig. 2, and a heater 29 associated with condenser 25. The temperature of a bimetallic condenser support 28 rises, thereby moving the associated condenser plate to increase the capacitance, and thus decrease the effective coupling between coils 22, 23. The valve oscillations are' thus cut-off at a position of vane 20 somewhat in advance of the position corresponding to the datum temperature, and the relay is then de-energized to close its contacts 15, 31. Heaters 11, 29 are thus deenergized, and a heater 30 is then energized to raise the temperature of a second bimetallic support 27, thereby reducing the capacitance of condenser 25 and thus increasing the coil coupling. Oscillations are thus re-initiated at a position of vane 20 in advance of the datum position. Ambient temperature changes have no influence on the condenser since both plates move in the same direction with a change in temperature of both trimetallic supports. Specification 657,535 also is referred to.
Patent GB-743909-A (GB)
Title: Improvements in or relating to electrically conductive fibres and fabrics
IPC: H01B1/24
Filed: 1952-12-30
Abstract: An electrically conductive fibre is obtained by extruding viscose in which there has been uniformly dispersed a quantity of carbon black in a proportion within the range of 3-100 volumes of carbon black to such an amount of viscose as would correspond to 100 volumes of the cellulose fibre, measured in the dry state, obtainable from the viscose (but without any addition of carbon black thereto) after the cellulose-regeneration and drying treatments.  Viscose containing 20 per cent by weight of carbon black calculated on the weight of the dry fibre may be used.  The fibres obtained may be formed into sheets or tapes which may be used as screening material in electric cables having insulation consisting partly of liquid dielectric such as insulating oils, or for earthing apparatus liable to accumulate electrostatic charges.
Patent GB-466499-A (GB)
Title: Improvements relating to retardation control mechanism for braking apparatus
IPC: B60T8/74
Filed: 1935-11-28
Abstract: 466,499. Fluidpressure brakes. KERSHAW, A. G., SIMMONS, A. W., and WESTING- HOUSE BRAKE & SIGNAL CO., Ltd. Nov. 28, 1935, No. 32998. [Class 103 (i)] Brakes are controlled according to the rate of retardation of the vehicle by means of a pendulum 1 which completes an electrical circuit in its normal position and completes further circuits successively when it is moved from this position, each of these circuits being completed before the previous circuit is interrupted. The pendulum carries two contacts 6, 7. The contact 6 is connected to one terminal of a source of supply and engages a contact 8 in normal position in order to close the circuit of a brake control valve 10 so that it permits supply of fluid to a brake cylinder and prevents release therefrom. On braking, the pendulum swings to the left, first making circuit for a holding valve 14 by means of contacts 7, 12, 13, then for release valve 11 by means of contacts 6, 9 at the same time breaking circuit through valve 10 by separation of contacts 6, 8. Movement of the pendulum is controlled by spring stops 3, 4 which it engages successively.
Patent GB-294828-A (GB)
Title: Control for gas burners
IPC: F23D14/48
Filed: 1927-12-06
Abstract: 294,828. Falkner, A. J. Dec. 6, 1927. Atmospheric gas burners. - A housing 1 having a gas inlet 2 and an air inlet 3 is fitted with a hollow plug 4 having corresponding openings 6, 11 so that, on rotating the plug by means of an external knob 12, the gas and air supplies are simultaneously controlled. The external diameter of the plug is reduced, or the internal diameter of the housing is increased, at the parts where the openings 6, 11 are formed so as to provide annular passages 16 for maintaining communication between the inlets and openings irrespective of the angular position of the plug. The outlet of the gas duct 7 in the plug may be controlled by a needle valve 14. The housing is preferably connected with the burner proper by means of an extension having a constriction 17.
Patent GB-811882-A (GB)
Title: Baths for the electrolytic deposition of chromium
IPC: C25D3/10
Filed: 1956-10-30
Abstract: 811,882. Electrodeposition of chromium. KAMPSCHULTE, H., and FARFSING, P. Oct. 30, 1956 [Jan. 27, 1956], No. 33077/56. Class 41. Chromium is electrodeposited from an aqueous chromic acid solution containing sodium benzene disulphonate. The bath may also contain silicofluoride as by the addition of hydrofluosilicic acid or an alkali metal or alkaline earth metal silicofluoride. The additions to the chromic acid solution may be present in excess of their bath solubility. Air agitation may be employed. Specifications 697,786 and 711,468 are referred to.
Patent GB-854661-A (GB)
Title: Process and apparatus for the generation of co-containing fuel gas
Inventor: TEXTOR HANS DIETER
IPC: C10J3/46
Filed: 1957-10-25
Abstract: 854,661. Gas producers. LENTJES, KESSELSCHMIEDE UND MASCHINENBAU F. Oct. 25, 1957, No. 33340/57. Class 55 (1). Carbon monoxide containing gas is produced by passing air or oxygen at a velocity greater than 100 metres per second through an incandescent layer of coke 3 formed of densely packed particles having a grain size less than 10 mm., the gas being drawn off immediately after its production through a heat-resistant grid 9 so that the coke particles are not entrained in the gas. As shown, coke is fed in at 21 and slag removed at 4, there being two inlets 6, 6<SP>1</SP> and two outlets 8, 8<SP>1</SP>, each of the latter having a screen 9 or 91 of porous refined steel. The gas produced has a calorific value of 900 kilocalories per standard cubic metre or if the air or oxygen is mixed with 20 to 40% by weight of steam, the resultant gas may have a calorific value up to 1200 kilocalories.
Patent GB-393590-A (GB)
Title: A diffraction erythrocytometer
IPC: G01N15/02
Filed: 1931-12-04
Abstract: 393,590. Optical gauging. FINE, J., 130, Roman Road, London, and DAVIDSON, H. G., 131, Parrs Wood Road South, Manchester. Dec. 4, 1931, No. 33642. [Class 106 (ii).] An instrument for estimating the diameter of blood corpuscles by measuring the diameter of the diffraction halo produced by the particles comprises a pair of coaxial telescopic tubes a, y, the tube a being closed by a disc b having two pin-hole apertures covered by lenses c, and the tube g being closed by a disc h in which is a central viewing aperture. The tube g is also provided with a slot l to receive a slide m bearing the blood film. The instrument being directed towards a source of light, two diffraction haloes are seen when observation is made through the aperture in the disc h, and the tubes are relatively adjusted axially until the haloes touch. The diameter of the corpuscles can then be read directly from a scale c on the tube a.
Patent GB-414562-A (GB)
Title: Improvements in holders for match packages
IPC: A24F27/26
Filed: 1933-11-30
Abstract: 414,562. Igniting matches. ERHARD & SOHNE AKT.-GES., Schwõbisch Gm³nd, W³rtemberg, Germany. Nov. 30, 1933, No. 33647. Convention date, Sept. 25. [Class 50.] A package of matches, e.g. of the kind ignited by friction during withdrawal, is secured to an inverted cup 15 held on a pillar 16 between a flange 18 and a nut 19. The pillar is secured to an ash - tray 20 weighted at 21. The match package may consist of two long strips rolled spirally into substantially cylindrical shape or the match packages and holders may be rectangular.
Patent GB-783789-A (GB)
Title: Improvements in rotary cutters for metal strip or the like
Inventor: LAPPER JOHN
IPC: B23D35/00
Filed: 1954-11-20
Abstract: 783,789. Shearing. AUXILIARY ROLLING MACHINERY, Ltd. Nov. 21, 1955 [Nov. 20, 1954], No. 33647/54. Class 83 (4). In a machine having rotary blades, e.g. for slitting metal sheet, each blade is driven by worm and worm wheel gearing and one unit comprising a worm, worm wheel and blade shaft is movably mounted to adjust the relative positions of the blades. The worms and worm wheel 5 driving the upper blade shaft 3 and the bearings for the shaft 3 are mounted in a gear box 14 slidable in guides in the frame 13 and supported by a rod 19 threaded into the frame 13 so as to be vertically adjustable. The lower blade shaft 4 is journalled in the frame 13 and carries a worm wheel 6 engaging a worm on the driving shaft 9. The drive from the shaft 9 is transmitted through a coupling 17 to a shaft slidable therein and carrying a gear 11 engaging a gear 12 driving the worm and wheel gearing 5, the gears 11 and 12 being carried by the gearbox 14.
Patent GB-311643-A (GB)
Title: Improvements in means for controlling the supply of fuel to internal combustion engines
IPC: F02M59/36
Filed: 1928-11-16
Abstract: 311,643. Held, G. Nov. 16, 1928. Regulating delivery by opening suction valves. -A two-stroke internal-combustion engine working with injection of liquid fuel is converted into a four-stroke engine at low speeds by electromagnetic control of the suction valve of the fuel pump. The invention may also be applied to four-stroke and six-stroke cycle engines. A fuel pump 3 with delivery valve 8 has the suction valve 5 made of magnetic metal so that it is attracted by the core 9 of an electromagnet 11 when this is energized, whereupon the fuel is bypassed back to the tank. The circuit of the electromagnet is provided with a switch 15, and with a circuit breaker comprising a contact 20 rotated at half engine speed under a brush 21. When the switch 15 is on the contact 16, the magnet is not energized, and the engine works on its normal cycle. With the switch on contact 18, the magnet is continuously energized and the valve 5 is kept raised, so that the engine stops. If the switch 15 is placed in the position 17, the magnet is energized only as the contact 20 touches the brush 21, so that each alternate fuel injection is suppressed.
Patent GB-771357-A (GB)
Title: Improvements in or relating to the sizing and surface finishing of paper tubes and the like
Inventor: DUNLAP CHARLES KIRKLAND
IPC: B65H75/10
Filed: 1953-12-03
Abstract: 771,357. Making resin-paper tubes. SONOCO PRODUCTS CO. Dec. 3, 1953, No. 33651/53. Class 87(2). [Also in Groups IX and XXVIII] A paper tube having on its outer surface a coating of thermosetting resin, e.g. " Bakelite " (Registered Trade Mark), is subjected to treatment that forms the resin into a hard smooth coating. This treatment comprises moving the tube longitudinally through the bore of a rotating sizing die, preferably while preventing the tube from rotating, and then transferring the tube directly to the bore of a heated curing die and allowing it to remain there until the resin is cured. Figs. 4 and 5 show apparatus for doing this, comprising a sizing die 106 rotated by electric motor 170, a curing die 108 open at each end, a stationary sleeve 104 and a hydraulically-reciprocated mandrel 102 which is shouldered at 180. In use, a tube T is fitted on to the mandrel when the latter is in the leftward position shown in Fig. 4, then the mandrel is pushed to the right to force the tube through the sleeve 104 and die 106 into the die 108. Both the die 108 and the sleeve 104 are a sufficiently tight fit on the tube to prevent rotation thereof with die 106. The mandrel then retracts to the left, the tube being stripped from the mandrel by the square edge 184 on die 106 and remaining in die 108. The operation is then repeated with a second tube, the first being pushed out of die 108 ; and so on. Fig. 6 shows apparatus comprising two sets of stationary sleeves 104, 104<SP>1</SP> and rotating sizing dies 106, 106<SP>1</SP>, disposed one behind the other, and a final curing due 108. The dies 106 and 106<SP>1</SP> rotate in opposite directions, and their bores decrease successively in diameter. The tube may be made by winding a paper blank treated with adhesive mixed with thermosetting resin ; or a moulded paper or fibre tube may be dipped in the resin. One end of the tube may be turned inwardly to make a textile bobbin, the other end being chamfered or rounded (see Group IX).