baber/WOPTO huggingface dataset:
Patent GB-875791-A (GB)
Title: Process for the manufacture of chlorine dioxide
IPC: C01B11/02
Filed: 1958-11-05
Abstract: <PICT:0875791/III/1> In the production of ClO2 by the reduction of alkali metal chlorate in a sulphuric acid aqueous solution by SO2, formaldehyde, or methanol, the ClO2 is washed with H2SO4 containing alkali metal chlorate.  A solution of 35-60% H2SO4 and 2-15% NaClO3 is introduced at 2 into washing vessel 1 and passes thence through 3 into reaction vessel 4 in amount equal to the amount introduced at 2. NaClO3 solution, with, or without, H2SO4, is added at 5 to vessel 4, operating at 15-55 DEG C., while air or inert gas containing SO2 is introduced through distributer 6. The ClO2 gases leave through 7, pass through washing vessel 7, operating at 10-20 DEG  C., from distributer 8 and are removed at 9, while exhausted solution is withdrawn at 10 in amount equal to the amount of introduction.  The ClO2 may be passed through an alkali metal peroxide or amalgam, e.g. a solution of Na2O2, to prepare alkali metal chlorite.
Patent GB-1212274-A (GB)
Title: Improvements in or relating to stepping motors, in particular motors of pneumatic kind controlled by fluid amplifiers
Inventor: DELARUE JEAN-CLAUDE
IPC: F16H31/00
Filed: 1968-07-25
Abstract: 1,212,274. Fluid logic and switching circuits. SOC. GENERALE DU VIDE "SOGEV". July 25, 1968 [July 25, 1967], No.35670/68. Heading F1P. A shaft 3 is rotated in steps in one direction or the other by pneumatic actuators 8, 9 fed with gas by a fluidic circuit 27, 37, 38, 42, Fig.3, operable to cause the shaft to move through one step in response to an input signal 25 and to a signal dependent on the position of the shaft 3. Each pneumatic actuator 8 or 9 has a pawl 6 or 7 movable, when the actuator is operated, into engagement with respective ratchet wheels 1, 2 arranged to drive the shaft 3 in opposite directions. The position signal is provided by the co-operation between a perforated tape, Fig. 6 (not shown) or wheel 16 driven by the shaft 3 and two oppositely facing nozzles 18, 19 between which passes the tape or wheel. When a perforation registers with the nozzles, flow takes place from nozzle 18 to nozzle 19. To rotate the shaft through one step the input signal 25, in the form of a short pulse is sent to a pulse-shaping circuit 27 including a fluid amplifier trigger 26. The output 29 from the trigger 26 is fed to a bi-stable fluid amplifier 28 having control inputs 30, 32 including restrictions 31, 33 and a reservoir 34. This arrangement produces an amplified control pulse 35 of predetermined duration. Triggers 39 and 43 change state as a result of the pulse 35 being sent to the input 70 of the trigger 39. Operation of the trigger 43 produces an output in line 45 and thereby causes the release of a locking pawl 14 from engagement with teeth 13 of a locking wheel 12 fixed to the shaft 3. Simultaneously the output in the line 45 passes to a switch 68 selectively positioned to pass on the output to one or other of bistable amplifiers 48, 49 depending on the desired direction of rotation. Assuming the switch passes the output to the input 46 of the bi-stable amplifier 48, the state thereof is changed and fluid passes to the actuator 8 through a line 62 to rotate the shaft 3. When the flow between the nozzles 18, 19 is interrupted the fluid supply to the control inlet 69 of the trigger 39 is lost and the trigger changes state thus causing the change-over of the trigger 43. As a result the trigger 43 produces an output at 50 to cause re-engagement of the locking pawl 14 and a delayed change-over in the amplifier 48. The actuator 8 is then returned to its starting position to await re-activation when a new control pulse 25 is received. The pulse shaping circuit 27 may be omitted if the pulses 25 are of sufficient duration. If the duration of each pulse is equal or greater than the stepping time, a modified synchronizing circuit 37 is necessary, Fig. 4 (not shown).
Patent GB-990298-A (GB)
Title: Improvements in or relating to electro-mechanical filters
IPC: H03H9/52
Filed: 1962-09-19
Abstract: 990,298. Filter networks. SIEMENS & HALSKE A.G. Sept. 19, 1962 [Sept. 22, 1961], No. 35754/62. Heading H3U. An electromechanical band-pass filter comprising an even number of mechanical oscillators is associated with a capacitive bridge. The bridge capacitor Cv is connected between the secondary of a 1 : - 1 transformer L2, L3 and a terminal of the input which is connected in series with a circuit L1, C1 resonant at the centre frequency of pass band. The primary of the output transformer is augmented by a capacitance C2 (which may consist wholly or partly of the output capacitance of the filter) to form a circuit resonant at the centre frequency. The effect of the capacitive bridge is to produce poles of attenuation at either end of the pass band. The behaviour of the circuit differs fundamentally from that of circuits containing an odd number (>1) of mechanical oscillators. These differences are discussed in Specification 990,299.
Patent GB-634173-A (GB)
Title: Improvements in or relating to the exhausting and sealing of vessels
IPC: H01J9/40
Filed: 1946-12-04
Abstract: 634,173. Making electric discharge tubes; soldering. PHILIPS LAMPS, Ltd. Dec. 4, 1946, No. 35946. Convention date, Aug. 18, 1943. [Classes 83 (ii) and 83 (iv)] [Also in Group XL (a)] In a method of exhausting and sealing a vessel having a wall at least partly of metal, such as an electric discharge tube, the walls of an exhaust opening 2 through the metal portion 1, comprises a fusible substance such as tin-solder 3, which after the exhaust process, is melted to seal the opening by an electric current in a circuit closed by pressing a movable metal body 5 against the fusible substance, or a part of the metal wall in its neighbourhood. As shown, the metal portion 1 is'the exhaust tube and locating lug of an electric discharge tube.
Patent GB-1532305-A (GB)
Title: Method and apparatus for building a multi-storey building
IPC: E04B1/35
Filed: 1976-08-31
Abstract: 1532305 Constructing multi-storey buildings EPITESTUDOMANYI INTEZET and KONNYUIPARI SZERELO ES EPITO VALLALAT 31 Aug 1976 35953/76 Heading E1S The floors of a multi-storey building are formed successively from the top to the bottom of the building, the formwork (or scaffolding) 4 for use in making the floor being supported on a plurality of temporary columns made up of sections 5, the formwork 4 being lowered between floor levels by removing sections 5 from the base of the columns. The columns are raised and lowered by means of hydraulic jacks 3, a frictional clamp 2 mounted on legs 1 serving to support the column whilst the lowermost section 5 is added or removed. The jacks may act telescopically inside tubular sections, the clamp 2 acting directly on the sections, Fig. 1 (not shown). Alternatively the sections 5 are of lattice construction and are raised by a member 8 acted on by the jack 3, the clamp 2 acting on member 8.
Patent GB-953652-A (GB)
Title: Improvements in or relating to methods and apparatus for trimming flash from hollow plastic articles
IPC: B29C49/50
Filed: 1960-10-20
Abstract: 953,652. Blow-moulding hollow articles. OWENS-ILLINOIS GLASS WORKS CO. Oct. 20, 1960 [Oct.21, 1959], No. 35978/60. Heading B5A. In the blow-moulding of a hollow article from a tube of thermoplastic material in a two-part mould 4a, 4b by means of a blowing mandrel 8, flash formed at the neck of the article is removed by rotating neck mould parts 6a, 6b. Knife edges 32a, 32b on the mould parts 6a, 6b remove the flash 33 at the end of the article. In a modification, Fig. 9, a piston 19 is caused to move a slide 12 which rotates the mould parts 36a, 36b to sever the flash 10. Grooves 31 form a thread on the neck of the article.
Patent GB-989818-A (GB)
Title: Improvements relating to electric motor starter circuit
Inventor: MITCHELL GEORGE EDWARD
IPC: H02P1/18
Filed: 1962-09-24
Abstract: 989,818. Control of D.C. motors. GENERAL MOTORS Ltd. Sept. 10, 1963 [Sept. 24, 1962], No. 36194/62. Heading H2J. A starting circuit for a D.C. motor comprises a switching transistor 10 and a control transistor 12 across which is a bias resistor 30. Upon closure of a start switch 24 transistor 10 becomes fully conducting, passing maximum current through motor field 42 and energizing the armature 44 through the resistor 30, transistor 12 being initially partially conductive. As the motor accelerates the voltage drop across resistor 30 decreases, thus bringing the base potential at tap 36 nearer to that at collector 16 and causing the transistor to become increasingly conductive until full speed is reached. A thermal overload switch may be connected in the supply circuit.
Patent GB-940301-A (GB)
Title: Improvements in or relating to cam mechanisms
Inventor: SHEPHERD GEORGE RONALD
IPC: F16H53/02
Filed: 1961-10-10
Abstract: 940,301. Actuation of switches. H.M.C. OF HARTFORD Ltd. June 22, 1962 [Oct. 10, 1961], No. 36376/61. Heading H2B. [Also in Division F2] A cam mechanism, particularly for an electric switch, comprises an operating spindle 1 carrying at its end a U-shaped driving member 3 which engages a cam follower 4 having a turned down portion 4a engaging a cam track 5a in a base member 5. The cam follower 4 has a central boss 4c from which the cam following movement is taken and end portions 4b which follow an annular flat surface 5b on the base member 5. As the spindle 1 is turned, the cam follower 4 rises and falls in accordance with the slope of the cam track 5a and the motion is transmitted to an adjusting member preferably in spring-pressed engagement with the boss 4c. A radial groove 5c is provided on the surface 5b for indexing and locating the ends 4b in certain positions. A modified arrangement is shown in Fig. 3.
Patent GB-1280119-A (GB)
Title: Grease compositions
IPC: C08K5/01
Filed: 1970-07-28
Abstract: 1280119 Greases U B BRAY and E L BRAY [trading as BRAY OIL CO] 28 July 1970 [24 Sept 1969] 36426/70 Heading C5F Greases comprise a naphthenic, paraffinic and/or deep dewaxed mineral oil thickened with a perfluoro-olefin polymer having a particle size below 30 microns; 0À5 wt. per cent of phenylalpha-naphthylamine being present when the oil is naphthenic or paraffinic. The polymer may be P.T.F.E. or polyhexafluoropropylene.
Patent GB-1012736-A (GB)
Title: Improvements in or relating to cooling devices for semiconducting power rectifiers
IPC: H01L23/467
Filed: 1962-09-25
Abstract: 1,012,736. Cooling semi-conductor rectifiers. C. K. D. PRAHA NARODNI PODNIK. Sept. 25, 1962 [Nov. 2, 1961], No. 36454/62. Heading H1K. A semi-conductor rectifier assembly is cooled by the provision of a central air duct extending from the outer atmosphere through the rectifier assembly and into a common chamber into which open further air ducts housing rectifying elements. In the embodiment (Fig. 1) partitions such as 5 divide the rectifier assembly to form a system of air ducts in such a fashion that each duct channels air through either the cooling ribs of the lower halves of a bank of rectifiers or through the upper parts of each rectifying element in a bank. All the air is subsequently directed into a common chamber 2. Air flow through the rectifier assembly is controlled by the provision of louvres (Figs. 3, 4 and 5, not shown) of shapes corresponding to the shape of the rectifier assembly.
Patent GB-1285473-A (GB)
Title: Improvements in or relating to rope climbing devices
Inventor: MATTINSON FREDERICK
IPC: B66B9/00
Filed: 1969-07-21
Abstract: 1285473 Rope brakes MARTIN-THOMAS Ltd 2 July 1970 [21 July 1969] 36477/69 Heading F2X [Also in Division B8] A safety brake on a rope climbing device (see Division B8) comprises a brake shoe 75 spring biased into braking engagement with a safety rope 35 once either the rope being climbed goes slack or the climbing device reaches an excessive speed. A pulley 78 engageable with the rope being climbed is mounted on a shaft 78A supported in a pair of parallel plates 70 freely mounted on a shaft 72, the brake shoe 75 being held inoperative against spring 83 by a pin 74 supported in the plates 70 while the pulley is biased by the taut rope. Upon slackness in the latter, the shoe 75 wedges against the rope 35 with the aid of rollers 76A, 76B. When an excessive speed of rotation of the pulley 78 takes place, pawls 79 thereon are centrifugally dis placed to engage pins 80, whereupon a gear wheel 82 is rotated to drive a geared segment 72 fixed on the shaft 72, which therefore rotates. A flat 84 on the shaft 72 eventually aligns with slots 85 in the plates 70 and permits the plates to be upwardly displaced by the spring 83 as the brake block 75 is applied.
Patent GB-1170688-A (GB)
Title: Apparatus and method for the Continuous Treatment of Fabric in the Piece
Inventor: BATES EMILE BERNARD
IPC: F26B13/16
Filed: 1967-08-10
Abstract: 1,170,688. Perforated drum dryers. E. B. BATES. 22 May, 1968 [10 Aug., 1967], No. 36678/67. Heading F4G. A fabric dryer comprises a substantially closed chamber 10 housing a perforated drum 11 surrounded by a steam heater 14 and in which are adjustably and rotatably mounted fans 19 for causing a heater air flow through the fabric F, the flow being substantially coincident with the width of the fabric. The air is preferably drawn into the drum through the drum perforations and exhausted through the drum ends. The guides 18 provide an even air flow at the drum ends. The fabric is passed into and out of the chamber over rollers 16 and 17 respectively the gap between which being closed by adjusable flap 33. Air may be exhausted from the chamber. The heater may comprise finned tubes running lengthwise of the drum. The means for adjusting the position of the fans 19 may comprise a screw 30 having two portions of opposite hand threads, on which are mounted nuts 29 which co-operate through slip rings 27 with keys 24 on the fans such that on rotation of the screw 30 the fans 19 are either moved toward or away from each other depending on the direction of rotation of screw 30. The dryer may be used with the edge guiding or stentering machine for fabric disclosed in Specification 1,014,765.
Patent GB-1534502-A (GB)
Title: Machine for lifting bales
IPC: A01D90/12
Filed: 1975-10-31
Abstract: 1534502 Bale stack lifting trailer G JOHNSTON 31 Oct 1975 [21 Aug 1974 15 Nov 1974] 36727/74 and 49667/74 Heading B8E An open ended trailer has side walls 3, 4 pivoted at 103, 104 on a cross-beam 105, a towing attachment 2, and is supported by wheels 7 vertically raisable and lowerable by rams 8. The open end has a cable 14 detachably attached to cables 15 so as to be tensionable by rams 16. To transport a stack of bales the side walls are swung apart about the pivots 103, 104 by a ram 13 and the trailer is backed around the stack, after raising the wheels 7 by the rams 8 to lower the side walls to the ground the ram 13 restores the side walls to their parallel position to grip the stack which is secured by attaching and tensioning the cable 14. After lowering the wheels 7 to raise the gripped stack it can be towed away.
Patent GB-1085516-A (GB)
Title: Herbicidal compositions
IPC: C07C275/30
Filed: 1965-08-26
Abstract: 3 - (o - fluorophenyl) - 1 - methyl urea is prepared by reacting o-fluoroaniline with methyl isocyanate in dioxane.ALSO:A herbicidal composition comprises 3-(o-fluorophenyl)-1-methyl urea together with a carrier which is (a) a solid or an oil, preferably also containing a surface active agent, (b) a liquid other than an oil and a surface active agent or (c) a surface active agent.  The composition may also contain another compound known to be a herbicide, numerous examples of which are specified.
Patent GB-1391545-A (GB)
Title: Crystallisable glasses, glass-ceramics and processes for making same
IPC: C03C3/062
Filed: 1972-08-07
Abstract: 1391545 Crystallizable glass OWENSILLINOIS Inc 7 Aug 1972 [5 Aug 1971] 36772/72 Heading C1M A thermally crystallizable glass comprises, in mole percent: wherein the molar ratio is (0À7-3À3) and the molar ratio is 0À8-1À8, the balance of the glass composition, if any, consisting of other compatible ingredients. The glass may have a refractive index of 1À76 to 1À95. The glass may be heat treated to form a transparent glass-ceramic, and optionally further heated to give an opaque glassceramic. The glass-ceramic may have a refractive index of 1À90 to 2À07, a dielectric constant of 100-500 and a dissipation factor of not more than 3%. The glass may be crystallized according to the method of 1,389,689 to form a glassceramic body having at least two portions of different refractive index for light transmittal therethrough.
Patent GB-958290-A (GB)
Title: Method and apparatus for laying electric cables
Inventor: BRADDY HERBERT WILLIAM JOHN
IPC: B65H57/14
Filed: 1961-10-13
Abstract: 958,290. Fairleads. BRITISH INSULATED CALLENDERS CONSTRUCTION CO. Ltd. Oct. 12, 1962 [Oct. 13, 1961], No. 36819/61. Heading B8B. A guide roller for use in cable laying comprises a cylindrical barrel 15 flanked by two flanged cheeks 16 whose external diameter progressively increases towards the ends of the roller. All three parts are independently rotatable on a common axle 18 supported by pedestals 19 upstanding from a base 20. The cheeks may provide seats 28 for the inner surface of the hollow barrel parts but in an alternative arrangement (Fig. 1, not shown), this provision is omitted. The barrel may itself comprise a plurality of separate independently rotatable cylindrical members. A plurality of the rollers may be mounted on a curved frame 33, Fig. 4, for use in guiding a cable round a bend. The barrel and/or flanges of the rollers are preferably of a synthetic plastic such as nylon.
Patent GB-522837-A (GB)
Title: Improvements in machines for cutting threads and the like on work pieces
IPC: B24B19/02
Filed: 1938-12-19
Abstract: 522,837. Grinding &c. screw threads &c. SHEFFIELD GAGE CORPORATION. Dec. 19, 1938, No. 36909. Convention date, Jan. 15. [Class 60] [Also in Group XXII] A machine for cutting screw threads or other helical grooves comprises a frame 10 carrying a table 11 on which is mounted a slide 27 carrying a slide 15 having arcuate surfaces 16 thereon to support, in angularly adjustable position, a head 14 carrying a grinding-wheel 13. The wheel is driven by a belt 18 from a pulley 19, 20 carried by a bracket 23 adjustable to tension the belt, by a screw 24 pivoted at 25 to the slide 27. The work 30 is carried on a longitudinally movable slide 34, by a tailstock 32 and a headstock 36, the work-engaging centre 38 of which is carried by a shaft 43 running in antifriction bearings' 41, 42 and driven by an electric motor 53 through a coupling comprising a sleeve 48, driving through speed reducing gear 52 by the motor and having therein slots slidably engaged by lips 50 on a connection 46 carried by the shaft 43. In order to move the slide 34 at a speed corresponding to the lead of the thread being cut, the headstock has thereon transverse guides in which is slidable a carriage 57 having a horizontal wall 58 provided with supporting surfaces 68 and arcuate slots 69. The carriage 57 is moved in the guides by a rack 63 on the carriage driven through a pinion 64 and a wormwheel 65, by a worm 66 on the shaft 43. On the surfaces 68 a bar 73 rests, the bar being clamped in angularly adjusted position by studs engaging the slots 69, and having rectangular heads 71 fitting in slots 72 in the bar 73. The transverse movement of the bar 73 with the carriage 57 produces longitudinal movement of the slide 34 with the work thereon by the engagement of the bar 73 with a block 78 pivoted at 76 to an arm 75 secured to the slide carrying the motor 53 ; the block 78 has downwardly extending sides between which and the bar 73 are balls 82 carried by cages 83, and engaging grooves in the sides and the bar, the groove on one side being provided in a member adjustable to take up wear. The bar 73 is set to the desired angular position by gauge blocks inserted between posts 86 on the bar and surfaces 87 on the carriage 57. In order to grind threads on tapered work, the grinding-wheel 13 is moved slowly inwards as the work 30 moves axially past the wheel. This movement is produced as described in Specification 522,888.
Patent GB-1270274-A (GB)
Title: Improvements relating to engine governors
IPC: F02D41/40
Filed: 1969-07-23
Abstract: 1,270,274. Automatic control of speed. ROBERT BOSCH G.m.b.H. July 23, 1969 [July 24, 1968], No.36918/69. Heading G3R. The speed of an internal combustion engine, e.g. a diesel in a vehicle, is controlled by adjusting its fuel supply (by injector pump setting) in response to the voltage on a terminal 65, to which is connected a first voltage source of high impedance (U71 and divider 68, 69), a second voltage source (low impedance) dependent upon engine speed (tachogenerator 12), and a third voltage source (low impedance) dependent on a setting device (U53, divider 52 with pedal operated rheostat 51), the second and third voltages being in series opposition and in series with an element conductive in only one direction, which may be a diode 63 or a transistor. The first voltage is sufficient to provide maximum fuel short of that which would produce smoke, the element 63 being back biased by the reference voltage. When the desired speed is reached the tachogenerator voltage exceeds the reference, forward biasing 63 and opposing the voltage from the first source, hence reducing the potential on terminal 65 and so also the fuel supply. A drop in speed will again cause 63 to be back biased and the fuel increased. The maximum amount of fuel which can be admitted is increased for starting by means not shown. The amount of "droop" in the speed/load characteristic is controlled by a rheostat 64. The tachogenerator has a second winding which produces a fourth voltage opposing a fixed, fifth voltage from a divider 56, 57, connected to terminal 65 via a second element 66. This is adjusted by a rheostat 67 to modify the speed/fuel characteristic at higher speeds only to provide "full load adaptation" and an ultimate speed limit, Fig. 3 (not shown). The D.C. tachogenerator shown may be replaced by an A, C. one, with a rectifier and smoothing circuit connected to terminal 65. The voltage on 65 effects control by an amplifier and electro-hydraulic servosystem, with positional feedback of the pump regulating lever. The resistors 52 and 57 may be temperature and/or pressure sensitive to compensate for varying ambient and atmospheric conditions.
Patent GB-417247-A (GB)
Title: Improvements in and relating to insulated electric conductors
IPC: H01B3/30
Filed: 1932-12-30
Abstract: 417,247. Conductors. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl- Ufer, Berlin.) Dec. 30, 1932, No. 36931. Void [Abridged as open to inspection under Sect. 91 of the Acts, July 1, 1933]. [Class 36.] A conductor a which may be bare or coated with enamel is insulated by an open winding of fibrous material b, such as artificial silk, which is retained in position by a coating c of varnish, preferably cellulose varnish. The coating c may be applied by passing the conductor through a bath of varnish, either before or after the winding of fibrous material is applied, the winding in the former case being applied before the coating has dried.