baber/WOPTO huggingface dataset:
Patent GB-820081-A (GB)
Title: Improvements in or relating to the production of magnesium oxide
IPC: C01F5/08
Filed: 1955-11-21
Abstract: A natural mineral comprising magnesium carbonate is calcined until substantially all the carbonate is decomposed, immediately thereafter cooled to form primary magnesium oxide, reacted with water to give magnesium hydroxide, the latter calcined until substantially all has been decomposed to oxide, and immediately thereafter cooled to form secondary magnesium oxide.  The hydration, second calcination and cooling may be repeated to give tertiary magnesium oxide.  The first calcination may be at 1200 DEG  C.; second and third calcinations should be at progressively reduced temperatures.  Hydration may be effected by powdering the cooled products followed by mixing with water to form a paste which is then allowed to harden or the calcined product may be dropped into water and allowed to remain immersed therein for 24 hours.  In the calcination, dead-burning is to be avoided and in the hydration, aqueous solutions as distinct from water are not to be used.ALSO:A mixture suitable for preparing hydraulic cement comprises a magnesium oxide prepared by calcining a mineral containing magnesium carbonate at least twice with intermediate hydration (see Group III), serpentine (magnesium bisilicate) and if desired also singly calcined magnesium oxide and/or powdered asbestos. A soap such as sodium or potassium oleate may also be present.
Patent GB-1218025-A (GB)
Title: Improvements in or relating to charging of storage batteries
Inventor: SAUNDERS BARRIE
IPC: H02J7/00
Filed: 1970-03-09
Abstract: 1,218,025. Electric control systems. PLESSEY CO. Ltd. 9 March, 1970 [19 July, 1967], No. 33279/67. Heading H2H. A storage battery 1 is supplied from a charging unit 2 which is switched off when semiconductor temperature sensing elements 4, 5 respectively inside and outside the battery 1, indicate by differences in voltage drop a change in relative temperatures to operate a control amplifier 6 which may also influence a state of charge indicator 7. The temperature difference will occur when a battery particularly a nickel-cadmium battery, is fully charged and the apparatus will provide charging pulses each time the temperature differential decreases. The charging unit 2 provides a constant changing current due to transistors 8, 9, Zener diode 11 and resistors 11, 12 and the switch 13 is a transistor which conducts when the voltage from the amplifier 6 exceeds a predetermined value.
Patent GB-1308376-A (GB)
Title: Controls for clothes dryers
IPC: D06F58/38
Filed: 1970-07-09
Abstract: 1308376 Control of two AC motors GENERAL ELECTRIC CO 9 July 1970 [15 July 1969] 33349/70 Heading H2J [Also in Division [F4 The moisture content of clothes in the drum 17 of a tumbler drier 10 is continuously sensed during drying as the electrical resistance of clothes bridging electrodes 62 and 63 the corresponding current being used to charge a timelag capacitor 96 to a voltage representative of the moisture content; when the voltage across the capacitor 96 reaches a predetermined level, transistors 92 and 83 conduct and current flows to the gate 73 of silicon controlled rectifier 70 so causing it to conduct (during appropriate half cycles of the alternating supply applied to terminals 65 and 66) so as to drive a timer motor 69 which cools the clothes by de-energizing electric heaters 34a and 34b while the A.C. motor 55 continues to rotate the drum 17 and a blower 53 to draw air through it and then interrupts the power supply to the whole apparatus. The timer motor 69 is of the hysteresis induction type, and may operate cams to control the switches for the drum motor 55 &c. Air is drawn into the drum 17 via annular inlet 36, heaters 34a and 34b, openings 37 in baffle 35, and annularly-arranged perforations 33 in the drum rear wall 22, and passes via perforations 47 in the inner wall 39 of the double-walled door 12, and aligned openings 48 and 49 in the door 12 and its frame 40, to a duct 50 having a lint trap 51 and leading via opening 52 to the blower 53 which exhausts it. Belt 58 extends entirely around the drum 17 and is tensioned at 59.
Patent GB-1435758-A (GB)
Title: Bearing assembly for the rotor of a rotary machine
IPC: F16C27/02
Filed: 1973-07-12
Abstract: 1435758 Fluid bearings COMMISSARIAT A L'ENERGIE ATOMIQUE 12 July 1973 [13 July 1972] 33399/73 Heading F2A [Also in Division B2] A bearing assembly for the rotor 16 of a high speed rotary machine, e.g. an ultracentrifuge, has a bearing member 17 having a bore 18 for receiving part of the rotor, the bearing member being movably mounted in a damping chamber 12 in the bearing casing by means of a resilient member 4, fluid being supplied under pressure to a first chamber 11 in the casing and thence to the chamber 12 housing the bearing member and via ducts 23, 25 in the bearing member to the bore of the member. The bearing bore may be cylindrical or conical and the member may be provided with an annular surface 24 which engages a corresponding surface 27 on the rotor for transmitting thrust forces. Ducts may be provided in the casing for collecting and recirculating the bearing fluid, and a labyrinth seal 44 may be provided between the rotor and the casing. The seal may be cooled so as to condense any vaporized bearing fluid.
Patent GB-979097-A (GB)
Title: Tube-holding device for winding in textile machines
IPC: B65H54/52
Filed: 1963-08-23
Abstract: 979, 097. Bobbin cradles for drum winding machines; stop motions. ETABLISSEMENTS PAINBOURGEAS. Aug. 23, 1963 [Nov. 28, 1962], No. 33413/63. Headings D1D and D1J. In a drum winding machine the package-forming tube 1 is supported for rotation at the outer ends of arms 8, 9 which form part of a cradle arrangement 11 which is pivotally mounted by means of pins 31, 32 on either side of a closed casing 33; the casing 33 houses an electric torque motor 66 having a pinion 64 in mesh with a toothed sector 51, the latter being pivotally mounted on the pin 32 and drivingly connected to the cradle so that energization of the motor 66 causes pivotal movement of the cradle to bring the tube 1 either into pressing engagement with its driving roller (Fig. 2 not shown) or to lift it out of engagement therewith. Alternatively the toothed sector could be fixed to the casing 33 and the driving motor adapted to pivot with the cradle 11. A further toothed sector 79 is similarly mounted on the other pivot pin 31 and transmits pivotal movement of the yoke 11 to a gear 78 which is operatively connected to a potentiometer device 77 which may be used to control the supply of current to the motor 66 and thus to regulate the pressure between the package and the driving roller as desired. The arm 9 is pivotally mounted by means of a pin 14 and may be moved outwardly from the tube 1 against the pressure of a spring 15 to release or replace the package 3 or tube 1. Partspherical heads 4, 5 supported on axially aligned pins 6, 7 at the ends of the arms 8, 9 are adapted to receive the tube 1. Thread is distributed on the package by means of a guide attached to a reciprocating rod (Fig. 2 not shown). The motor may be connected as part of a stop-motion device to lift the package out of driving relation with the drive roll in the event of thread breakage or on completion of the package.
Patent GB-520660-A (GB)
Title: A method of converting liquid hydrocarbons into highly compressible dry gas
Filed: 1938-11-17
Abstract: 520,660. Gas manufacture. ARNOLD, R. Nov. 17, 1938, No. 33416. Convention date, Dec. 7, 1937. [Class 55 (ii)] Liquid hydrocarbons are converted, without the employment of high pressure or temperature, into a non-condensible gas by drawing liquid hydrocarbon from an atomiser. A, together with atomising air, through the duct B of a cracking plant heated by an electric resistance coil C. The duct is heated to between 400‹ and 600‹C., and the carbon is converted into 'CO, a dry gas being obtained which is passed by a suction apparatus D to a cooler E and is forced by a compressor F into a storage tank G. Specifications 29021/11 and 104,822, [both in Class 55 (ii)], are referred to.
Patent GB-325267-A (GB)
Title: Process for the manufacture of new vat dyestuffs of the anthraquinone series
IPC: C09B5/28
Filed: 1928-11-15
Abstract: 325,267. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). Nov. 15, 1028. Carbazole derivatives of 1 : 1-dianthraquinonylaminoacridones containing no acylamino groups but containing two acridone rings in the 3 : 4(N) : 3<1> : 4<1>(N) positions, or derivatives or substitution products thereof, are prepared by treating such dianthraquinonylamines with sulphuric acid at a low temperature, followed, when necessary, by oxidation of the resulting product. In examples a product is prepared by condensing 1 : Bz2 : Bz4- trichlor-3 : 4(N)-anthraquinoneacridone (obtained by chlorinating the anthraquinoneacridone in nitrobenzene) with 1-amino-Bz-2 : Bz4-dichlor- 3 : 4(N)-anthraquinoneacridone (obtained by condensing 4 : 6-dichloraiithranilic acid with 1-amino- 4-bromanthraquinone-2-sulphonic acid, effecting ring closure with sulphuric acid and splitting off the sulpho group by means of reducing agents or by simple heating), and treated with concentrated sulphuric acid and sodium nitrite or chromic acid. The carbazolized product dyes cotton in fast green shades. The product obtained by the same treatment of the condensation product of the trichloranthraquinoneacridone. of the preceding example with 1-amino-3 : 4(N)-anthraquinoneacridone dyes cotton a more yellowish-green shade. Specifications 29352/10 and 305,082 are referred to. The Provisional Specification also refers to the treatment of dianthraquinonylamines containing no acylamino groups but containing at least two acridone rings in general.
Patent GB-1365301-A (GB)
Title: Electrically ignited gas burners
IPC: F24C3/10
Filed: 1971-10-11
Abstract: 1365301 Electrically-ignited gas burners SMITHS INDUSTRIES Ltd 11 Oct 1971 [10 July 1970] 33564/70 Heading F4F In an electrically-ignited gas burner, the burner body 10 is provided with a hole through which extends a ceramic body portion 20 of an igniter 15, a secondary outlet being provided in the body portion of the igniter such that gas-air mixture issuing from apertures 23, forming the secondary outlet, is ignited by the sparks produced between an electrode 22 and the burner body 10. The mixture issuing from the main outlet of the burner is thereby ignited by the flame issuing from the secondary outlet. In an alternative embodiment (Figs. 4 and 5, not shown) the igniter is in the form of a glow coil, supplied from a low voltage source, housed in a ceramic body through which the gas-air mixture issues through a single aperture.
Patent GB-610069-A (GB)
Title: Improvements in or relating to the manufacture of waterproof fuses
IPC: C06C5/00
Filed: 1945-12-12
Abstract: A thermoplastic binding agent which becomes fluent between 90 DEG and 125 DEG  C. and is devoid of organic nitrates, for example cellulose acetate and water-insoluble resinous polymerized unsaturated compounds, such as a polymerized ester or nitrile of acrylic or methacrylic acid, a polymerized vinyl ester of an organic or inorganic acid, a polyvinyl acetal, or a polymerized unsaturated hydrocarbon such as polystyrene or polymerized ethylene is used in the self-combustible core composition of a water-proof non-detonating fuze for blasting and like purposes, together with a pulverulent mixture of barium peroxide and a reducing agent such as sulphur, silicon, magnesium, calcium silicide, or ferrosilicon.  A plasticiser such as phthalic and phosphoric esters may be included for the binding agent, and in order to obtain fuzes of different burning speeds other ingredients may be added in varying proportions, for example iron and potassium nitrate; aluminium and potassium nitrate, calcium oxalate, potassium bichromate, calcium silicide and potassium nitrate.  The pulverulent mixture of barium peroxide and a reducing agent, with or without other ingredients is worked with the binding agent at about 125 DEG  C. and extruded at a temperature not exceeding 125 DEG  C.; the extrusion temperature is preferably higher than that of working.  Specifications 544,252, [Group XXI], and 580,409 are referred to.
Patent GB-746791-A (GB)
Title: Improvements in parquet blocks
IPC: E04F15/022
Filed: 1953-12-03
Abstract: 746,791. Laminated materials. BAUWERK AKT.-GES. Dec. 3, 1953 [Dec. 13, 1952; Dec. 13, 1952], No. 33678/53. Class 140. [Also in Group X] A parquet block comprises strips 1 mounted on a perforated backing sheet 2 of metal or plastic which is secured thereto at a number of points by pressing the material of the sheet 2 into the strips by means of a ribbed or other roller.
Patent GB-738370-A (GB)
Title: Improvements in or relating to the purification of chlortetracycline
Filed: 1951-01-26
Abstract: A substantially pure alkali metal salt of chlortetracycline is prepared by dissolving chlortetracycline-containing material in one or more polar solvents at a pH 8 to 10, separating any insoluble material therefrom and treating said solution with a substance which in aqueous solution is a source of alkali metal ions.  The pH adjustment is obtained by (a) the addition of an alkali metal base such as sodium or potassium hydroxide, the alkali metal salt being precipitated on dilution with water or (b) the addition of a nitrogenous base having a dissociation constant of at least 10-7, e.g. ammonia or triethylamine, alkali metal ions then being added to provide the alkali metal salt. Specified polar solvents are methyl alcohol, ethyl alcohol, propyl alcohol, butyl alcohol, amyl alcohol, phenylmethylcarbinol, 2-methoxyethanol, 2 - ethoxyethanol, ethylenechlorhydrin, benzylalcohol, dioxane, diethylene glycol monoethyl ether, ethylene glycol, nitromethane, acetonitrile, propylenechlorhydrin, diacetone alcohol, acetophenone, 2-methoxyethyl acetate and mixtures thereof.
Patent GB-923229-A (GB)
Title: Watch straps
IPC: A44C5/14
Filed: 1961-09-21
Abstract: 923,229. Watch straps. LEWA LEDERWARENFABRIK G.m.b.H. Sept. 21, 1961 [Oct. 7, 1960], No. 33812/61. Class 43. A wrist watch strap is passed through an eye on one side of a watch, across the watch and through an eye on the other side of the watch and has an intermediate part of reduced thickness made of material such as nylon arranged to lie between the eyes. The strap may be made of two layers a<SP>1</SP>, a<SP>2</SP> and b<SP>1</SP>, b<SP>2</SP> of leather, plastics or the like and the intermediate part c may be made of nylon or the like. The intermediate part may have a thin covering of lacquer, nylon or other synthetic resin or of strap material obtained by removing one or more layers i, h of the strap material.
Patent GB-855154-A (GB)
Title: Method of producing a dynamo-electric machine stator field structure
IPC: H02K1/16
Filed: 1958-10-23
Abstract: 855,154. Dynamo-electric machines. ALLMANNA SVENSKA ELEKTRISKA A.B. Oct. 23, 1958 [Nov. 11, 1957], No. 33905/58. Class 35. In a method of producing a dynamo-electric machine stator field structure which in the 2- pole 2-phase motor embodiment of Fig. 1 comprises a number of individual stator sectors each containing a complete slot for a slot winding 14, the stator sectors are mounted in a winding fixture, Fig. 3, the windings are wound directly into the respective sectors, and after removal from the fixture the sectors are assembled, Fig. 4, to form the complete field structure. The sectors comprise channel-formed members 13 having slots 29 or non-magnetic zones along their length to decrease magnetic leakage, and circular ring sector magnetic cores 15, and are cast in a binding agent 16. The winding fixture, Fig. 3, comprises a shaft 20 carrying parts 18, 19, 23 and a locating rod 21 which position the various channel-formed members 13 numbered here as 1 ... 12. After removal the sector pairs are manipulated to the shape in Fig. 4. In an alternative construction, Fig. 5, the sectors 13 comprise stacks of laminations held together by riveting or by covering the whole or part of the surface by a binding agent 17 which may also provide the slot insulation and be of nylon. After winding the sectors will need to be turned through 90 degrees for assembly to the position shown. The agent 16 may be shaped (not shown) to form an integral end shield in which is fitted a bearing.
Patent GB-307553-A (GB)
Title: Improvements in garters
IPC: A41F11/16
Filed: 1927-12-15
Abstract: 307,553. Breyer, P. Dec. 15, 1927. Gaiters comprise an elastic band A<1>, one end of which is looped round a flattened ring E and secured to itself as by seaming at H<1>, the other end passing through a friction grip slide C, through the flattened ring E, and being finally secured to the slide C. The slide is of the hingegrip type with serrations or teeth on the clamping plate.
Patent GB-1078451-A (GB)
Title: Improvements in or relating to an implement for displacing crop lying on the ground
IPC: A01D78/10
Filed: 1964-08-19
Abstract: 1,078,451. Haymaking machines. PATENT CONCERN N.V. Aug. 19, 1964 [Aug. 29, 1963; Sept. 17, 1963], No. 33981/64. Heading A1F. In a haymaking machine having one or more tined rotors 7, 8 sweeping crop rearwardly, box-like guide-members 19, 20 are provided extending around, and partly below, the path of the tines so that the crop is funnelled into a swath of smaller width than that worked by the machine. In Fig. 2 the rotors extend obliquely downwardly and rearwardly at approximately 45 degrees to the ground and the guide members comprise quadrant-shaped plates surrounded by arcuate flanges 21 which merge into funnel-like deflectors 22, 23 for the discharged crop. The machine comprises a frame consisting of gearboxes 1, 4, 5 interconnected by half-shafts 2, 3, and mounted on tractor draught-linkage by a frame 12-16. In Fig. 4, the rotor comprises a tined drum 29 of skeleton form with arms 30 carrying tine-bars 31. The guide-members comprise rods 45 extending between the tines, the rods being joined to a further member 42A, of funnel-like shape, for discharging the crop in a swath. The upper part of the rotor is surrounded by a hood 29A from the roof of which hang helically-arranged blades 38, 39 to direct the crop towards the mouth of the guide-member 42A. In Fig. 5, the rotors are similar to those in Fig. 1 and are arranged in two pairs connected together by a frame composed of gearboxes 47, 48 and a drive-tube 46. Each rotor is supported on a ground-wheel mounted on an extension of its tine-carrying shaft 60 and the working height of all the units is adjustable by a screw-jack 76 connected between the drawbar 71 and an arm integral with the gearbox 47. The guides comprise a box-like structure 79, 80, 92, 99 surrounding the rear part of the rotors, the parts 99 of the structure being pivotable about hinges 98, 101 and the parts 92 about hinges 90, in order to vary the direction and width of the discharged ribbons of crop.
Patent GB-1383178-A (GB)
Title: Varnishes
IPC: C09D167/06
Filed: 1972-07-20
Abstract: 1383178 Alkyd resin varnishes ASSOCIATED LEAD MFRS Ltd 3 July 1973 [20 July 1972] 33998/72 Heading C3R A varnish, based on a chlorinated and/or brominated oil modified alkyd resin, contains Sb in the form of at least one hexahydroxoantimonate of Na, Mg, Ca, Ba, Sr, Zn or Al and is further characterized in that it dries to form a clear film containing 4-30% Sb and 3-14% halogen. Additionally the varnish may contain a thixotropic agent, e.g. an organophilic montmorillonite. Examples describe the preparation of suitable varnishes based on chlorinated and brominated soya bean oil suspended in white spirit, and the use of all the above specified antimony-containing salts.
Patent GB-1235042-A (GB)
Title: Improvements in or relating to binary coding circuits
IPC: H04L13/16
Filed: 1969-07-07
Abstract: 1,235,042. Keyboard encoders. SIEMENS A.G. 7 July, 1969 [8 July, 1968], No. 34108/69. Heading G4H. Each key T1-Tn energizes one line in each pair L1, L1a to L5, L5a in a complementary manner, and a detector circuit produces an error signal (NOR gates G1-G6) in the event of two simultaneously operated keys energizing both lines of one or more pairs.
Patent GB-295537-A (GB)
Title: Improvements in and relating to rotary slide valve packing for internal-combustion engines
IPC: F01L7/16
Filed: 1927-12-16
Abstract: 295,537. Baer, A. Sept. 19, 1927, [Convention date]. Cylinders, passages of.-A rotary valve 6 is provided at the top with packing-members 16 formed with inlet and exhaust passages 15 and 15<1> leading to opposite sides of the cylinder head. These packing-members 16 are fitted with nickel diaphragms 22. and are further pressed against the valve by springs (not shown) fitted in chambers 19 so as to bear upon shoulders 18 on the packing.
Patent GB-285422-A (GB)
Title: Improvements in bolt-action smallarms
IPC: F41A17/48
Filed: 1927-12-16
Abstract: 285,422. Declaye, J. Feb. 16, 1927, [Convention date]. breech actions, sliding breech-block.-The ring 3<a> operated by the handle 3<b> for locking and unlocking a sliding breech-block 1 is formed with a recess 3<d> co-operating with a spring plunger 4 for locking and unlocking the trigger 5, the spring 4a of the plunger acting also as the trigger spring. When the breech is closed and locked, the recess 3<d> receives the plunger 4 and the trigger is free to be pulled. When the breech is unlocked by a rotation of the ring 3<a> by the handle 3<b>, an operation requiring a certain force to 'overcome the plunger 4, this plunger is pushed out and locks the trigger. The breech may now be opened and again closed; but unless it is again fully locked by a reverse rotation of the ring 3a the trigger remains locked .with its tooth 5a in the notch 7<b> of the hammer 7, which is thus locked at half-cock. When the breech is fully locked, the trigger is unlocked, and the hammer 7 can be pulled back by a handle 6 until it is fully cocked with its notch 7a engaged by the tooth 5a of the trigger.
Patent GB-990704-A (GB)
Title: Improvements in electric motors of the flat annular air-gap type
IPC: H02K3/26
Filed: 1962-09-06
Abstract: 990,704. Electric motors having printed windings and planar air-gaps. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. Sept. 6, 1962 [Sept. 8, 1961], No. 34188/62. Heading H2A. In a flat annular air-gap type of electric motor, which comprises a stator having a ring of permanent magnet fixed poles N, S on one side of an air gap in which rotates a printed circuit armature winding formed over the two faces of an insulating carrier member 7, the winding conductors include substantially radial portions 1 which are spaced apart by intervals 6 substantially equal to their width but of different magnetic property, and in order to eliminate drift or slow variations of speed at least one pair of permanent magnet poles is replaced by a pair of sets of magnetic teeth surrounded by coils 11 supplied with phase opposed alternating currents. The armature winding is supplied with D.C. via brushes. If the member 7 is magnetic the intervals 6 are left empty, but if non- magnetic they are filled with magnetic material; alternatively, the conductors may be magnetic in which case they are placed in depressions in a non-magnetic member. The magnetic teeth are formed in a yoke 10, and on the other side of the air gap is either a yoke 12 or a further similar stator. The A.C. energized teeth and magnetic intervals act as an elementary synchronous motor aiding or otherwise, the D.C. motor Specifications 874,394, 919,237, and 966,588 are referred to.