baber/WOPTO huggingface dataset:
Patent GB-1167961-A (GB)
Title: Improvements in Devices for Measuring Magnetic Field Gradients.
Inventor: SALVI ANTOINE
IPC: G01R33/022
Filed: 1967-01-26
Abstract: 1,167,961. Nuclear magnetic resonance magnetometers. COMMISSARIAT A L'ENERGIE ATOMIQUE. Jan. 26, 1967 [Feb. 4, 1966], No.3875/67. Heading G1N. In a device for measuring magnetic field gradients with compensation for the parasitic magnetic fields on board an aircraft, two similar gyromagnetic resonance magnetometer probes are used, one probe T 1  produces an electrical output signal whose frequency is equal to the Larmor frequency of the sub-atomic particles employed in it and therefore directly proportional to the field H 1  at that point which signal is fed to the input of the second probe T 2  which produces an output signal of the same frequency but shifted in phase by an amount dependent on the difference in magnitude of the two magnetic fields and thus of the field gradient between the two points of measurement. The probes each comprise a vessel, containing a liquid, e.g. ditertiobutylnitroxide or nitrosodisulfonate in water, whose protons constitute the sub-atomic particles. The intensity of the resonance signal of the protons is increased by the Overhauser-Abragan effect to which end an oscillator is provided connected to a coil immersed in the liquid by which an electronic resonance band of the substance is saturated. The input to each probe is provided by a coil in series with a resistor having a value such that the current in the coil is substantially in phase with the applied voltage. The output is provided by a coil forming part of a resonance circuit whose resonance frequency is arranged to be close to the Larmor frequency of the system. A resistor is provided in the resonance circuit to reduce its Q factor. As shown in Fig. 4, the amplified output U 2 , Fig. 3 (not shown), of probe T 1 , is fed back to its input, while the input to the other probe T 2  is provided by part U 0  of the amplified output from the probe T 1 , a further amplifier 11 being provided in the output of probe T 2  so that the amplitudes of the two outputs U 2 , U 3  are equal, their phase difference being then measured in device 13 and recorded at 15.
Patent GB-105068-A (GB)
Title: Improvements in Hot Air Engines.
Inventor: LEFEVRE HENRY ANTOINE
IPC: F02G1/04
Filed: 1917-03-17
Abstract: 105,068. Lefevre, H. A. March 22, 1916, [Convention date]. Hot-air engines.-The part a<1> of the cylinder that is in contact with the hot gases is insulated from the remainder a by a layer of non-conducting material c; it is also jacketed with heating fluid in the casing d. The piston e is insulated from its head e<1> and is not in contact with the part a<1> of the cylinder.
Patent GB-524762-A (GB)
Title: Improvements relating to doors for air-raid shelters and like refuge buildings
IPC: E06B5/14
Filed: 1939-02-07
Abstract: 524,762. Doors. LONDON WORKS (BARLOWS), Ltd., and MAYER, A. N. Feb. 7, 1939, No. 3942. [Class 20 (iii)] A gas-proof door has a peripheral flange a' and the door frame has a flange b', a rubber sealing member a<SP>4</SP> of channel section being compressed between these flanges when the door is shut tightly by a handle d operating a projection d' working on a cam surface on the door frame. The door consists of an angle iron frame covered by a sheet metal plate.
Patent GB-673214-A (GB)
Title: Improvements in or relating to insulated electrical coils
IPC: H02K15/12
Filed: 1950-02-16
Abstract: Electrical coils are impregnated with fluid polymerizable compositions which are then polymerized to solids by heating. Suitable compositions comprise (a) styrene, the reaction product made by heating at 240 DEG  C. one mol. of maleic anhydride, one mol. of adipic acid and 2 mols. of propylene glycol and adding 2 mols. of n-butanol until the product has an acid number of 5, and t.-butyl hydroperoxide as catalyst; (b) styrene, the reaction product made by heating at 150 DEG  C. tall oil and glycerol, adding maleic anhydride, heating to an acid number of 5, and benzoyl peroxide as catalyst.  Alternatively a single polymerizable compound such as diallyl phthalate, diallyl succinate, diallyl maleate, diallyl adipate, allyl alcohol, methallyl acrylate, diallyl ether, allyl acrylate, allyl crotonate or a partially condensed organisiloxane may be used.  There may also be employed unsaturated alkyd resins produced from maleic acid, fumaric acid, maleic anhydride, monochloromaleic acid, itaconic acid, itaconic anhydride, citraconic acid or citraconic anhydride, and glycol, glycerol, pentaerythritol or epoxides.  Part of the unsaturated acid may be replaced by saturated acids such as succinic, adipic, sebacic and phthalic acids. Castor oil maleate ester may be used. The alkyd resins may be dissolved in styrene, alpha methyl styrene, 2,4-dichlorostyrene, paramethyl styrene, vinyl acetate, methyl methacrylate, ethyl acrylate, diallyl phthalate, diallyl succinate, diallyl maleate, allyl alcohol, methallyl alcohol, acrylonitrile, methyl vinyl ketone, diallyl ether, vinylidene chloride, butyl methacrylate, allyl acylate, allyl crotomate, 1,3-chloroprene and divinyl benzene.  Other specified catalysts are tert.-butyl perbenzoate, tert.-butyl hydro-peroxide, di-t.-butyl diperphthalate, 1-hydroxy-cyclohexyl hydroperoxide-1 and ascaridol.  Polymerization may be effected in compressible moulds of rubber, polychloroprene or silicone rubber.
Patent GB-100390-A (GB)
IPC: B24B5/08
Filed: 1916-03-17
Abstract: 100,390. Bright, F. E. May 6, 1915, [Convention date]. Disk apparatus; round holes, enlarging and trueing.-In a grinding-machine for treating annular bodies, such as the bearing-rings of antifriction bearings, the work-holder is mounted on a rotary sleeve, which is also reciprocated, and the rotary grinding-tool spindle extends within the work sleeve and has a feeding movement radially of the sleeve imparted to it. The holder or chuck Y for the work X is mounted on a sleeve 11, which is secured to a member 12 surrounding a stationary post 5 on the machine frame 2. The member 12 is free to rotate and reciprocate on the post 5. The rotation is imparted by a belt pulley 20 and keys 23 on the part 12 engaging keyways in the extension 22 of the pulley. The reciprocation is imparted by a cam-operated lever 24 pivoted at 25, rollers on the lever bearing upon the base 16b of a trough 16, which supports the sleeve by means of a bearing 27. The cam 28 engaging the lever 24 is secured to a worm-wheel 31, which is driven by a worm 32 on a shaft 33 driven by a belt pulley 34. Within the fixed post 5 is positioned an eccentric adjusting-sleeve 6 in which the spindle 7 of the grinding-tool 8 has bearings at 9, 10. The spindle is driven by a pullev 41. The adjusting-sleeve 6 is controlled to feed the disk 8 radially to the work X by a segment gear 36 actuated by a hand-wheel on a shaft 37. The grindings and waste water are prevented from reaching the bearings by covers 17, 18 secured to the post 5 and spindle 7 respectively. The waste passes into a chamber 14 and is thrown through pipes 15 into the stationary trough 16.
Patent GB-252060-A (GB)
Title: Improvements in means for controlling rotating field motors
IPC: H02K17/30
Filed: 1925-02-12
Abstract: 252,060. Wade, H., (Nederlandsche Technische Handel Maatschappij Giro). Feb. 12, 1925. Alternating-current motors. - Rotative field motors are controlled by small variations of resistances, self-inductions or capacities which produce alternating voltage variations on the input side of a thermionic valve amplifier, the output side of which is connected to one or more phase windings of the motor. As shown, Fig. 1, the resistances R<1> - - R<3> form a bridge arrangement, the grid and filament of the valve V being connected across the equalizing conductor, and the anode circuit being connected to phase winding H of a two-phase motor M. The direction of rotation of the motor depends upon the direction of current flow through the equalizing connection, and a maximum field displacement in the winding is obtained by condensers K<2>. K<1>. Fig. 2 shows a distant control system used for signalling purposes, the transmitter being shown as a variable resistance R, the line circuits L forming part of the bridge and the receiver R<3> a variable resistance controlled by the motor M in response to variations in the transmitter circuit.
Patent GB-423068-A (GB)
Title: Improvements in or relating to fuel gas generating systems for internal combustion engines
IPC: F02M27/02
Filed: 1934-02-07
Abstract: 423,068. Vaporizers. BERHUDAR, J., Afet, Sokak, Pangalti, and ZIMOPOULO, A. L., 12, Cafer Aga Karakol Sokak, Kadik÷y, both in Istambul. Feb. 7, 1934, No. 4101. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 8, 1934.] [Class 7 (iii)] [See also Group XII] Low-grade hydrocarbons are conveyed from a float chamber through a tube 14 to a pipe 15 closed at its upper end and supported in and extending into the lower portion of a gas generator 16 having a filling aperture 17 for carbonaceous material at its upper end normally closed by a cover 18 secured by a wing nut 19. Near the base of the generator is an aperture 21, for removal of ashes, closed normally by a plate 22 through the centre of which passes a tube 23 with perforations in its wall for admission of air. A funnel-shaped member 24 is disposed near the base of the generator and, at the top, a pipe 25 leads to a cooler 26, Fig. 4, provided with fins 27 and a vertical partition 28. The cooler communicates through a pipe 29<a> with a chamber 30 containing a mass of metallic wool 35 and provided with an air intake 33 controlled by a valve 34, and also with a throttle valve 31 in the passage leading to the engine. The hydrocarbon is delivered into the incandescent mass at a region where CO is produced, and in this reducing atmosphere it is vaporized and cracked into gaseous products.
Patent GB-107557-A (GB)
Title: An Improved Plastic Composition for use in the Manufacture of Mouldings and the like.
Inventor: TOMALIN FREDERICK JOHN
IPC: C08L89/00
Filed: 1917-03-21
Abstract: 107,557. Tomalin, F. J. March 21, 1917. Compositions containing plaster, whiting, gelatinous matter, &c.-A composition of (say) 40 lb. of whiting, 30 lb. of glue or size, about 1 pint of turpentine, 1¢ lb. of stearin wax and 5-10 lb. of plaster of paris or Keene's cement is employed for making picture frame and other mouldings and for other purposes. The whiting is mixed with water which is evaporated until a stiff paste results, melted glue is well mixed in and then turpentine and stearin wax. The planter of paris or Keene's cement is mixed with water or turpentine and then added to the mixture. Specification 106,115, [Class 87 (ii), Moulding plastic &c. substances], is referred to.
Patent GB-680281-A (GB)
Title: Methods of improving the corrosion resistance of ferrous articles
IPC: C09D5/08
Filed: 1949-02-15
Abstract: Ferrous articles are coated with a thin adherent film comprising an alkali-metal silicate and then exposed to the vapours of a hydrocarbon-substituted halogenosilane.  The silicate coating composition may comprise potassium, sodium or lithium silicates, and 10-90 per cent phosphoric acid and/or 5-40 per cent zinc chromate or chromium oxide, each percentage being expressed by weight based on the alkalimetal silicate, may be included.  The hydrocarbon - substituted halogenosilane may be methyl or ethyl chlorosilane, or a mixture thereof, or a mixture with silicon tetrachloride; as described in Specifications 572,740, [Group II], and 575,696, [Group VIII].  The silicate may be applied by dipping the article, which may be at a temperature above 50 DEG C into, or spraying it with, a 3-15 per cent aqueous solution thereof; the article may then be baked at 60-150 DEG C for 10-30 minutes, and exposed to the vapour of the hydrocarbon-substituted halogenosilane; if desired, prior to exposure to such vapour and after baking, the article may be subjected to the action of water vapour.  Finally, the article is heated at 60-125 DEG C for 15-180 minutes.ALSO:Ferrous articles are coated with a thin adherent film comprising an alkali-metal silicate and then exposed to the vapours of a hydrocarbon-substituted halogenosilane.  The silicate coating composition may comprise potassium, sodium or lithium silicates, and 10-90 per cent phosphoric acid and/or 5-40 per cent zinc chromate or chromium oxide, each percentage being expressed by weight based on the alkalimetal silicate, may be included.  The hydrocarbon-substituted halogenosilane may be methyl or ethyl chlorosilane, or a mixture thereof, or a mixture with silicon tetrachloride; as described in Specifications 572,740 and 575,696, [Group VIII].  The silicate may be applied by dipping the article, which may be at a temperature above 50 DEG  C into, or spraying it with, a 3-15 per cent aqueous solution thereof; the article may then be baked at 60-150 DEG  C for 10-30 minutes, and exposed to the vapour of the hydrocarbon-substituted halogenosilane; if desired, prior to exposure to such vapour and after baking, the article may be subjected to the action of water vapour.  Finally, the article is heated at 60-125 DEG  C for 15-180 minutes.
Patent GB-1019031-A (GB)
Title: Improvements in or relating to electrically driven mining machines
IPC: E21C35/00
Filed: 1963-02-01
Abstract: 1,019,031. Mineral-mining machines. GEBR. EICKHOFF MASCHINENFABRIK U. EISENGIESSEREI m.b.H. Feb. 1, 1963 [Feb. 24, 1962], No. 4138/63. Heading E1F. [Also in Division H2] A starter or controller box 10 of an electrically actuated mining machine is so constructed that it can be mounted on the machine to face in either of two opposite directions and to present in each position a freely accessible side, always the same side, provided with supply cableguiding and gripping means 8, 9. The means 8 comprises a bell-mouthed, two part, vertically divided body which embraces a cable-gripping bush 10 from which a cable leaves to enter the box through a further guide 9.
Patent GB-563870-A (GB)
Title: Improvements in or relating to parallel clamps
IPC: B25B5/10
Filed: 1943-03-15
Abstract: 563,870. Hand vices etc.; clamps. MARSDEN, A. March 15, 1943, No. 4193. [Class 61 (ii)] A hand clamp has both jaws 1, 2 adjustable on a pair of rods or bolts 3, the jaw 1 roughly adjustable by means of pins 6 disengageable from notches 5 along the rods and the jaw 2 finely adjustable by nuts 13, 14 on the threaded extremities 4, the nut 13 without and the nut 14 within the jaw 2.
Patent GB-733008-A (GB)
Title: Improvements relating to head lamp assemblies for motor cycles
Inventor: CUNNINGHAM DOUGLAS JAMES
IPC: B62K21/04
Filed: 1953-02-16
Abstract: 733,008. Mounting motor cycle headlamps. JAMES MOTOR CYCLES, Ltd., [formerly JAMES CYCLE CO., Ltd.]. Feb. 16, 1954 [Feb. 16, 1953], No. 4212/53. Class 75 (3). In a headlamp assembly for motor cycles of the kind wherein the headlamp is disposed in a housing mounted on or adjacent to the upper ends of the front forks of the cycle and carrying instruments such as a speedometer, ammeter, and a control switch, the housing is mounted for controlled pivotal movement about a horizontal axis by means operable by the rider. As illustrated, the housing 10 is formed with lateral extensions attached by bolts 26 to the upper ends of the forks 25, and a limited pivotal movement of the housing 10 about the bolts 26 is effected by rotating the knurled head 37 of a stud 35 threaded into a boss 36 on the upper end of the steering head 33. The rear end of the housing 10 is depressed by turning the stud 35 clockwise and is raised by a spring 38 when the stud 35 is turned counterclockwise. The headlamp assembly is held in its adjusted position by frictional resistance at the pivots 26.
Patent GB-888563-A (GB)
Title: Improvements in or relating to control systems particularly for resistance welding apparatus
Inventor: ROBINSON KENNETH ARTHUR
IPC: B23K11/24
Filed: 1957-02-07
Abstract: 888,563. Control systems for resistance welders. LANCASHIRE DYNAMO ELECTRONIC PRODUCTS Ltd. May 7, 1958 [Feb. 7, 1957], No. 4253/57. Class 38 (4). A control system for operating a switching device for, say, a resistance welding machine, at determined intervals comprises a multi-cathode discharge tube 10 which in conjunction with a first group of cathodes 0-4 of a second tube 12 counts cycles of A.C. to determine an " on " time, and which in conjunction with a second group of cathodes 5-9 also in the second tube determines an " off " time. The times are selected by switches S1, S2 for the " on " time and S3, S4 for the " off " time, each pair of switches feeding a coincidence detector 18, 20 which each feeds an output pulse to cathodes 5 or 0, respectively, of the tube 14 and cathode 0 of the tube 10, to initiate a further count. A switch S5 having three positions allows a single cycle, continuous operation, or a shut-down, after a number of cycles determined by a switch S6 co-operating with a further tube 28. In the quiescent state of the circuit, cathodes 9 of both tubes 10, 12 are glowing. A or a number of sequences are started by resetting switch 26 which allows a pulse generator 15 to transfer the glow of tube 10 to cathode 0, which in turn through another pulse generator transfers the glow on tube 14 to cathode 0, thus switching on an output device 22 controlling an external circuit through one of rectifiers 23. When the " on " time has been counted out, the coincidence detector transfers the glows to cathode 0 of tube 10 and cathode 5 of tube 12, the latter turning off the output device 22 for a time dependent on the setting of the switches.
Patent GB-198009-A (GB)
Title: Improvements in and relating to starch conversion products
IPC: C13K1/06
Filed: 1922-02-14
Abstract: A substantially dry starch material is heated in presence of a hydrolysing agent to a temperature of about 325 DEG  F. to produce a composition having a sugar content ranging between 6 and 13 per cent, and containing also other products of amylolysis, together with some unaltered starch.  In an example, powdered and substantially dry starch is treated with about 0.5 per cent by weight of pure hydrochloric acid previously diluted to about 10 DEG  B<\>ae.  The mixture is heated to 325 DEG  F. in a steam-jacketed converter provided with agitating means, and maintained at that temperature for about an hour.  Regulation of the heating so that the moisture present in the mixture is evaporated before conversion begins is stated to improve the colour of the product. The product may be mixed with wheat or other flour in various proportions and used in the manufacture of bread.
Patent GB-471788-A (GB)
Title: Improvements relating to inductance coils
IPC: H01F17/04
Filed: 1937-02-12
Abstract: 471,788. Inductances. STEATIT-MAGNESIA AKT.-GES. Feb. 12, 1937, No. 4309. Convention date, Feb. 13, 1936. [Class 38 (ii)] In a high-frequency inductance coil having a core of compressed powdered magnetic material movable as a whole or comprising two relatively movable parts c, d resilient inserts g of cork, rubber, &c., are arranged between the movable part and a fixed part such as the coil former a so as frictionally to maintain the movable part in adjusted position. The invention is also described with reference to pot-type cores having a central adjusting screw, Fig. 3 (not shown), the screw having flats thereon to which resilient strips are secured and which frictionally engage the threaded hole in the fixed part of the core.
Patent GB-1279521-A (GB)
Title: Internal combustion engine valve gear
Inventor: RICHTER HANS-GERT
IPC: F01L1/20
Filed: 1970-01-29
Abstract: 1279521 Cam followers GENERAL MOTORS CORP 29 Jan 1970 [6 Feb 1969] 4322/70 Heading F2K [Also in Division F1] The clearance between a valve actuator member, e.g. a cam or rocker, and the stem 2 of a spring-biased poppet valve is adjustable by rotating a nut 7, screwed on the valve stem, relative to a spring retainer 8 slidably and non- rotatably mounted on the stem. The nut 7 and retainer 8 have complementary interengaging teeth 11 and 12, Fig. 3 (not shown), having a ratio of tooth height to width of approximately 1 : 4. A flat (15), Fig. 2 (not shown), in the retainer aperture 14 engages a flat 6 on the stem 2 and to adjust the clearance a tool, e.g. a screwdriver blade, is engaged in a slot (13) in the retainer 8 and the nut 7 rotated relative thereto. The cam-actuated rocker 22 has one end 24 pressed on to the ball-headed pin 25 by a spring 26 and the other end is guided between a pair of spaced projections 20 on a disc 19 rotatably mounted in the nut 7.
Patent GB-470407-A (GB)
Title: Process for the manufacture of tetrakis-azodyestuffs
IPC: C09B35/56
Filed: 1936-02-13
Abstract: Tetrakisazo dyes are made according to the scheme: 4 : 4<1>-diaminodiphenylamines \sQ (alkaline) 2-aminonaphthol sulphonic acids \sQ N - hydroxyalkyl - m - phenylenediamines. They dye cotton and viscose in black shades of good dischargeability.  The following dye stuff is described: 4 : 4<1>-diaminodiphenylamine - 2 - sulphonic acid \sQ 2 : 8 : 6-acid \sQ N -b -hydroxyethyl-m-phenylene diamine. Other components specified are 4 : 4<1>-diaminodiphenylamine-3<1>-methyl- or 3<1>-methoxy-2-sulphonic acid; 2-amino-8-naphthol-3 : 6-disulphonic acid and J acid; 1-methyl-2-amino-4 - b  - hydroxyethylaminobenzene, 1-chlor-2 - amino - 4 - hydroxyethylaminobenzene, 1 - (b  : g  - dihydroxypropylamino) - 3 - aminobenzene.  Specification 23584/94, [Class 1], is referred to.
Patent GB-806852-A (GB)
Title: Potentiometers
Inventor: COTTON MICHAEL BEN
IPC: H01C10/20
Filed: 1956-02-13
Abstract: 806,852. Friction clutches. SPERRY GYROSCOPE CO. Ltd. Jan. 22, 1957 [Feb. 13, 1956; March 19, 1956], Nos. 4470/56 and 8561/56. Class 80 (2). [Also in Group XXXVI] An electromagnetically-operated friction clutch is shown in section in Fig. 3. The electromagnet 33, has an energizing coil 34 fed through spring attachment plates 46, and mounted on a tube 41 which slides on the operating shaft 12. When energized, the electromagnet is drawn on to the armature 31 which is secured to the shaft 12. The clutch may be used to operate the wipers 3, 4, 7, 8 of a potentiometer (see Group XXXVI), and the electromagnet together with the wipers are re-centred by the springs 27, 28 (Fig. 5), when the clutch is released.
Patent GB-1510421-A (GB)
Title: Lanolin and more particularly to a process for the production of lanolin rendered hypoallergenic
IPC: C11B11/00
Filed: 1976-02-05
Abstract: 1510421 Hypoallergenic lanolin WOOLCOMBERS Ltd 20 Jan 1977 [5 Feb 1976] 04503/76 Heading C5C Hypoallergenic lanolin is produced by reducing the free fatty alcohol content of lanolin to less than 3 wt. per cent and the detergent content thereof to less than 0.05 wt. per cent. The removal of fatty alcohols may be achieved by vacuum distillation and removal of both fatty alcohols and detergents by washing with a polar solvent, e.g. methanol, ethanol, isopropanol, acetone or acetic acid, or by treatment with activated earth. Non-allergenic alcohols, e.g. myristyl, cetyl or stearyl alcohols or cholesterol, sitosterol or lanosterol may be added to improve water-absorption.
Patent GB-264344-A (GB)
Title: Improvements in means for cooling the cylinders, and moistening the charge of internal combustion engines
IPC: F01P9/02
Filed: 1926-02-18
Abstract: 264,344. Matthews, W. C. Feb. 18, 1926. Cylinders, cooling; four-stroke-cycle engines.-Water supplied through a pipe c is sprayed on to the exterior of a cylinder by pressure from the cylinder acting through a pipe d and controlled by a valve e. Also a small quantity of water is drawn into the cylinder through the pipe d for moistening the charge- A non-return valve in the pipe d may be used when desired to prevent water being drawn into the cylinder.
Patent GB-123763-A (GB)
Title: Improved Means for Driving the Injection-air Pumps of Diesel Engines.
Inventor: WEYLAND JONAS ALBERT
IPC: F02B33/00
Filed: 1919-02-25
Abstract: 123,763. Weyland, J. A. Feb. 28, 1918, [Convention date]. Driving-gear, pump.-The injection air pump plunger 7 of a Diesel engine is driven through link work 8, 9, 10 from the cross-head 11 so that its rate of motion diminishes rapidly towards the end of the delivery stroke.