baber/WOPTO huggingface dataset:
Patent GB-1195641-A (GB)
Title: A Method of Producing Sodium Percarbonate
Inventor: YANUSH APPOLINARIA VASILIEVNA
IPC: C01B15/10
Filed: 1968-05-03
Abstract: 1,195,641. Sodium percarbonate. GOSUDARSTVENNY NAUCHNO - ISSLEDOVATELSKY I PROEKTNY INSTITUT OSNOVNOI KHIMII. 3 May, 1968, No. 21100/68. Heading C1A. Sodium percarbonate is made by a process in which Na 2 CO 3  is reacted with H 2 O 2  and benzoic acid and either silica or an inorganic silicate are added to stabilize the product. The benzoic acid is added in an amount of from 0À5-4À0% wt. based on the weight of Ne 2 CO 3  used. The silica or inorganic silicate is added in amounts between 2-5% wt. and 1-1À5 mole of hydrogen peroxide are used for each mole of carbonate used. Powdered Na 2 CO 3  may be reacted with an aqueous solution of H 2 O 2  in the presence of the stabilizers or alternatively, an aqueous solution or suspension of Na 2 CO 3  is reacted with an aqueous solution of H 2 O 2  in the presence of the silica or inorganic silicate, benzoic acid being added to the product before drying.
Patent GB-229356-A (GB)
Title: Improvements in wireless apparatus
IPC: H05K11/00
Filed: 1923-08-20
Abstract: 229,356. Compare, A. Aug. 20, 1923. Combined with and convertible into wireless receivers. - Wireless re ceiving apparatus is combined with or carried on a walking-stick, umbrella, or like article. Fig. 4 shows the upper part of a stick in cross section, and Fig. 5 shows the aerial extended. The body of the stick comprises an ebonite or like tube a with a metal spike at its lower end to form an earth connection. The upper part is wound with a coil c, connected at its lower end c<1> to the earth spike. A brass tube d telescoping within the stick has an outwardly-turned tongued' which slides in a longitudinal slot in the stick and makes adjustable contact with the bare inner surface of the coil, thus providing for the tuning of the set. The brass tube d is rigidly connected to the knob h which is hollow and has a removable upper part so as to house the telephones when not in use. The crystal detector is mounted on one earpiece, and the telephones are connected by plug connectors and flexible leads, so as to form a circuit from the upper end of the tube d through the detector and phones to an earth wire. The aerial structure comprises a vertical rod e with four horizontal arms f hinged at its upper end, Fig. 5, the lower end having a plug e<1> and shoulder e<2> by which it is secured to the tube d. The arms f are hinged to a block f<1> having oppositely-projecting aligned pins f<2>, f<3> either of which may be inserted in the upper end of the rod e. When the aerial is not in use, the. block f<1> is reversed, the arms f then falling around the rod e. This is then removed from the tube d and re-inserted therein in reversed position, thus enclosing the collapsed aerial within the stick. The coil c may be protected by a cloth cover, or it may be wound on a tube within the stick proper. The earth spike may be removable from the base of the stick and reversible. The detector may, when in use, be plugged, into the side of the stick. Tuning may be effected by two relatively-adjustable coils, or by varying a capacity formed by two or more telescoping sections separated by insulation. The aerial may comprise a. metallized tape housed within the knob or elsewhere, and provided with an insulating ring at its free end by which it can be attached to a, tree or other support.
Patent GB-1254634-A (GB)
Title: Improved thyristor arrangement
Inventor: BOKSJO CARL INGVAR
IPC: G02B6/42
Filed: 1969-04-25
Abstract: 1,254,634. Photo-thyristors. ALLMANNA SVENSKA ELEKTRISKA A.B. 25 April, 1969 [26 April, 1968], No. 21157/69. Heading H1K. Firing of a photothyristor having its anode and cathode on opposed faces of the semiconductor wafer is effected by illuminating both faces of the wafer simultaneously. In one embodiment the anode and cathode electrodes are annular and the silicon wafer is illuminated by flashes from a single gallium arsenide light emitting diode or laser which reach the electrode apertures via light pipes consisting of bundles of glass fibres. Alternatively for greater reliability, separate light sources are used to illuminate the anode and cathode sides. In either case a single source may illuminate several devices.
Patent GB-1115648-A (GB)
Title: Synthetic diamonds
IPC: B01J3/08
Filed: 1965-05-19
Abstract: Diamond is synthesized by forming an intimate mixture of graphite and a cooling medium and passing therethrough a shock wave generated by explosive means.  The intensity of the shock wave must be sufficiently high to convert at least some of the graphite to diamond but sufficiently low to enable the cooling medium to cool the resulting diamond to below the rapid atmospheric graphitization temperature sufficiently rapidly e.g. in less than 0.1 second to prevent at least some of the diamond graphitizing. The product is normal cubic diamond, "hexagonal" diamond showing a hexagonal (100) reflection at a spacing of 2.186 <\>rA, a cubic (111) reflection at a spacing of 2.061 <\>rA and a hexagonal (101) reflection forming a shoulder varying from the cubic (111) reflection up to 1.895 <\>pA, or mixtures of these. The shock wave may be applied by detonating a high explosive in direct contact with the mixture, explosively driving a projectile plate against the mixture, or confining the mixture in a container and generating the shock wave in direct contact with the outside of the container using a high explosive or projectile plate.  The shock wave may introduce into the mixture containing up to 60% by volume graphite a pressure between 200 and 2000 kilobars for a time between 0.1 and 10 microseconds.  The cooling medium may be iron, copper, nickel, aluminium, manganese, magnesium, tungsten, titanium, niobium, steel and brass.  The intimate mixture may be an integral solid that will not shatter on shocking, e.g. cast iron.  Alternatively graphite and the cooling medium, both in particulate form, may be mixed and compacted, e.g. by explosive means, before passing therethrough the shock wave.  The cooling medium may have a shock impedance of at least 3 x 106 dynes/sec/c.c., a heat capacity of at least 0.1 cal/g/ DEG  C., a thermal conductivity at room temperature of at least 0.1 cal/sec/cm./ DEG C., a density of at least 85% of the theoretical density and reach a maximum temperature during shocking of less than 1800 DEG  C. The graphite used may have a density of at least 60% of the theoretical density and the mixture an overall relative density of at least 70%.  The mixture of diamond and graphite resulting from the above process may be treated in accordance with the process of Specification 1,115,649 to remove the unconverted graphite.  The diamond particles recovered may be agglomerated to form larger particles using the process of Specification 1,115,650.
Patent GB-688410-A (GB)
Title: Improvements in and relating to textile ring spinning frames
IPC: D01H7/58
Filed: 1950-08-28
Abstract: 688,410. Ring spinning frames. GOREE, 1. M. Aug. 28, 1950. [Oct. 1, 1949], No: 21209/50. Class 120(ii) A textile ring spinning frame comprises a vertically movable ring rail 10, a driving drum (not shown) arranged near one end of the ring rail, a group of spinning rings 26 extending longitudinally of the rail, a holder 28 surrounding each ring and held stationary upon the rail 10, each holder 28 and associated ring 26 having bearing races 28<SP>1</SP> and 26<SP>1</SP> respectively, bearing elements .30 held within the races, a pulley 32 secured to each ring 26, a flat belt 38 extending longitudinally of the rail and engaging a plurality of the ring pulleys to drive them and passed about the driving drum to be driven thereby, means (not shown) to shift the belt vertically with the movement of the rail so that the belt is shifted longitudinally of the drum and means (not shown) to drive the drum. The drumdriving means may be associated with the spinning frame drive and tensioner rollers may be provided between adjacent ring pulleys to tension belt 38.
Patent GB-1460506-A (GB)
Title: Electronic flame detection devices
IPC: G01T7/12
Filed: 1974-05-14
Abstract: 1460506 Flame detectors SIE SOC ITALIANA ELETTRONICA SpA 14 May 1974 [22 May 1973] 21213/74 Heading G1A A flame detector comprises: a U.V. responsive ionization tube; a D.C. biasing source; a currentlimiting discharge-quenching means; energy-storage means arranged to be charged to a constant voltage; and means for transferring the stored energy to an output line when the ionization tube discharges, the energy-storage and transfer means being selected to prevent parasitic oscillations of the voltage across the ionization tube after it has been triggered by radiation. An ionization tube X3, Fig. 3, or a plurality of such tubes in parallel, each sensitive to U.V. radiation from the core of a furnace flame, is supplied, via a current-limiting resistor R3 and a pulse transformer T3 primary, with steady D.C. voltage V chosen to lie between the minimum and the spontaneous firing voltages Vmi and V is , and to confer on the tube a high sensitivity to U.V. photons. A capacitor C3 charged to voltage V, stores energy which, upon discharge through the tube X3 initiated by a photon, sends a substantial current pulse of 200-300 Á sec duration through the transformer T T3 primary. Once the capacitor C3 voltage has fallen below Vmi the discharge is queched, the capacitor recharge current being limited by the resistor R3 to a value below the minimum firing current. To avoid interference with the recovery of the circuit to full sensitivity by the superposition of cyclic fluctuations on the voltage V, the capacitor C3, transformer T3, and the load connected to the output terminals U are chosen to form a damped, aperiodic circuit across the tube X3. With a voltage V of 700 V, satisfactory pulses, quenching times and recovery times are stated to have been found with C3 = 500 pF and R3 = 680 K#. The use of D.C. voltage V keeps the ionization tube X3 continuously sensitive except during discharge and recovery periods. The load circuit connected to the output may include analogue on digital measuring means. In a second embodiment, Fig. 4, the tube X4 ionization current triggers a controll rectifier SCR4 which draws an amplified discharge pulse from the capacitor C4.
Patent GB-1078886-A (GB)
Title: Electromagnetic relay with ball-type armature contacts
IPC: H01H51/28
Filed: 1966-05-13
Abstract: 1,078,886. Polarized relays. INTERNATIONAL STANDARD ELECTRIC CORPORATION. May 13, 1966 [May 20, 1965], No. 21292/66. Heading H2B. A sealed contact unit having a ball armature contact 6 movable between fixed contact pairs 2, 3 and 4, 5, which it bridges, has electromagnet poles 8 adjacent one pair of fixed contact pins 2, 3 and the biasing permanent magnet adjacent the other fixed contact pins 4, 5.
Patent GB-819610-A (GB)
Title: Catalyst
IPC: C08G18/22
Filed: 1957-07-05
Abstract: A process of preparing an elastomeric diisocyanate modified polymer comprises catalysing the reaction between (A) tolylene diisocyanate or 3,31-dimethyl-4,41-diphenyl diisocyanate; and (B) a polyalkylene ether glycol or a polyester, the polyester being prepared from at least one dibasic carboxylic acid and at least one glycol, the polyalkylene ether glycol or polyester having a molecular weight ranging from 1000 to 3000 and an acid number not greater than 5 by heating the polyalkylene ether glycol or polyester in the presence of magnesium oxide or barium oxide as catalyst and subsequently adding the diisocyanate to the material.  Suitably the heating is carried out for from 30 to 60 minutes at 125 DEG  to 145 DEG  C. using 0.005 to 0.2 parts by weight of the oxide per 100 parts by weight of the polyalkylene ether glycol or polyester.  From 0.95 to 1.05 mols. of diisocyanate per mol. of polyester are generally employed. Examples describe heating ethylene glycol/propylene glycol/adipic acid polyesters and a polybutylene glycol ether, respectively, in the presence of magnesium oxide or barium oxide, followed by reaction with 3,3-dimethyl-4,41-diphenyl diisocyanate.  In comparison experiments the oxide is omitted.  Specifications 694,982, 696,449, 696,450, 731,071 and 742,457 are referred to.
Patent GB-277794-A (GB)
Title: Improvements relating to key sets for telephone systems
IPC: H04M1/23
Filed: 1926-08-30
Abstract: 277,794. Siemens Bros. &. Co., Ltd., and Humphries, H. E. Aug. 30, 1926. Semi-automatic exchange systems. - In an operators' key set the key tops are normally flush with or slightly below the surface of a face plate. In the arrangement shown the key set a is formed as a unit and is dropped into a recess in the key shelf where it is supported by a base hinged at h and adjustable by means of a screw f to vary the inclination of the concave face plate e to the key shelf.
Patent GB-374676-A (GB)
Title: Improvements in or relating to bogies for transporting vehicles
IPC: B62D53/06
Filed: 1931-07-27
Abstract: 374,676. Trailer vehicles. WATKINSON, R. W., 11, Hovingham Terrace, Harehills, Leeds. July 27, 1931, No. 21343. [Class 108 (i).] In a truck for transporting vehicles the track or rails which is usually arranged longitudinally of the truck is disposed on a turntable arrangement so that the vehicle may be loaded on or unloaded from the truck at either side. The frame 1 mounted on wheels 2 is provided with a turntable 5 having a central pivot 4 and supporting peripheral rollers 7 adapted to coact with. the annular run 8, a circular toothed rack 9 fixed to the turntable being engaged by a toothed pinion 11 for rotating the turntable. The pinion may be driven from a handle-wheel 16 by shafts 13, 15 and worm gearing 12. The platform 10 is provided with the track or rails for the vehicle to be transported.
Patent GB-877669-A (GB)
Title: Improved electric motor control system
IPC: B65H23/198
Filed: 1959-06-22
Abstract: 877,669. Automatic tension control systems. ALLIS-CHALMERS MANUFACTURING CO. June 22, 1959 [July 8, 1958], No. 21372/59 Class 38 (4). [Also in Group XXXVII] In a tension control system for a moving web the armature supply to an electric motor, driving a material receiving reel or work rolls, is derived from a generator and the motor field is energized by an exciter responsive to the tension signal and a signal dependent on the armature current. As shown an armature 5 of a motor 4 driving a material receiving reel 3 is supplied from an armature 11 of a generator 10. A field 12 of the generator is energized from an armature 14 of an exciter 13. The exciter field 15 is energized from an A.C. source 21 via a reversible output magnetic amplifier 20 comprising reactance windings 22, 23 and reactance windings 24, 25. The direct current outputs from bridge rectifiers 32, 28, through resistors 33, 29 are in opposition and the field 15 is energized by the voltage difference across connections 34, 35. A bias winding 36 is energized from a D.C. source 37 and adjusted by a rheostat 38. A reference winding 42 is also energized from the D.C. source 37 and adjusted by a rheostat 43. A field 6 of the motor 4 is energized from an armature 91 of an exciter 90, the field 92 of which is fed via a potentiometer 94 from the source 37. The potentiometer 94 is positioned by a motor 80 supplied from an A.C. source 61 through a reversible magnetic amplifier 60, having a bias winding 81 supplied from the source 37 and a control winding 83 supplied with a current proportional to the armature current of motor 4 from a resistor 84. A signal representative of the tension in a web 1 is derived by a tensiometer 47 comprising a spring-biased deflector roll 49 varying the reactance of a winding 48. An A.C. source 50 energizes a bridge rectifier 51 through the reactance winding 48 to produce a direct current output, proportional to the tension, across a potentiometer 52. A slider 53 of the potentiometer 52 is positioned by the motor 80 and the tapped voltage energizes parallel-connected control-windings 85, 54 of the magnetic amplifiers 60, 20. Rapid variation in tension is compensated by the control of the generator exciter 13 and sustained variation by motor 80 driving the potentiometer 94 to restore the relationship between tension and armature current. The potentiometer 52 compensates for non-linearity in the output from the tensiometer 47 due to strip build-up on the reel. A compensation for change in mill speed is derived from a tacho-generator 41 driven by rolls 2 and applied to a winding 40 of the magnetic amplifier 20.
Patent GB-644260-A (GB)
Title: Improvements in and relating to vacuum cleaners
IPC: A47L9/22
Filed: 1948-08-13
Abstract: 644,260. Mounting electric motors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 13, 1948, No. 21422. Convention date, Aug. 14, 1947. [Class 35] In a vacuum cleaner the motor fan unit is resiliently supported between two spaced apart holding members 27, 28 respectively fixed to a casing 1 and to an end cap 3. One resilient member 29 consists of a rubber disc having a central hole and is placed in engagement with a flange 11 fixed to the casing 1, while the other resilient member 30 also of rubber is initially in the form of a cubical block. The latter is placed on top of a bulge 38 of the motor fan housing and, by means of a cross-piece 33 fixed to the holding member 28 and of screws 31 the motor fan unit is pressed and resiliently supported between said rubber members.
Patent GB-1577120-A (GB)
Title: Liquid detergent compositions
IPC: C11D3/37
Filed: 1976-05-24
Abstract: The aqueous, heterogeneous, stable, liquid detergent contains   a) 2 to 20 per cent by weight of a detergent material from the group of non-soap-like, anionic, non-ionic, amphoteric, zwitterionic, synthetic surfactants, soaps of C10-C22 fatty acids, soaps of dimerised C10-C22 fatty acids and their mixtures,   b) at least 2 per cent by weight of sodium tripolyphosphate, c) at least 2 per cent by weight of sodium or potassium orthophosphate, where the total of ingredients b) and c) is 5 to 35 per cent by weight, and the b) : c) ratio is 10 : 1 to 1 : 10 by weight, and d) 0.1 to 2 per cent by weight of a copolymer of maleic anhydride with ethylene, styrene or vinyl methyl ether in an aqueous medium.)
Patent GB-405311-A (GB)
Title: Improvements in or relating to processes for facilitating the penetration of latex into textile materials
IPC: D06M15/693
Filed: 1932-07-29
Abstract: The penetration of latex into textile materials is improved by adjusting the pH value of the textile or the latex, or both, so that both have substantially the same pH value, or in the case in which both are treated, the pH will become automatically adjusted to a value at which the latex will not coagulate.  The process may be used in conjunction with those described in Specifications 338,381, [Class 120 (iii), Yarns, &c.], and 344,414, [Group IX].  Textiles may be treated with solutions of alkalies, hot or cold, under vacuum or pressure, or latex may be heated with acids in the presence of peptisers which prevent coagulation or flocculation, such as those wetting agents sold under the trade names "Nekal," "Saprotin," or "Hygrolite."  Naphthenic acids act as peptisers which lower the pH value.  Naturally acid latices such as funtumia, may be rendered alkaline in the presence of casein or the like.  A viscous acid latex, on addition to an alkaline textile, becomes more fluid without coagulating.  Specifications 324,664, [Class 70, Indiarubber &c.], and 347,691, also are referred to.
Patent GB-971160-A (GB)
Title: Thin-wall containers of thermoplastic materials
IPC: B32B27/00
Filed: 1960-11-17
Abstract: 971,160. Nestable cups &c. ILLINOIS TOOL WORKS Inc. Nov. 17, 1960 [Dec. 10, 1959], No. 21516/64. Divided out of 971,159. Heading A4A. In a drinking cup or like vessel, particularly for vending machines and made of thermoplastic material, ribs or a network of webs integral with a sheet-like side wall of the cup project from the outer surface to increase the strength and insulation properties without increasing the weight of the cup. The cup is preferably made from sheet material premoulded by a moulding roll having superficial projections as disclosed in Specification 971,159 to have a base portion having a smooth surface, forming the inner surface 80 of the cup, and on the outer surface intersecting cross ribs 58, 60 extending from the base portion a distance not less than the thickness of the base. The cup may be moulded as disclosed in Specification 934,437 so that the ribs are stretched and distorted along lines 74, 76 and although decreased in height and thickness are not obliterated due to back pressure of air trapped in the mould. In a modification shown in Fig. 7 the cup has unintersected ribs on lines 88 being moulded from a premoulded material having no cross ribs 60.
Patent GB-203152-A (GB)
Title: Improvements in and relating to cooling systems for internal combustion engines
IPC: F01P3/22
Filed: 1922-08-08
Abstract: 203,152. Mallory, H. C. Aug. 8, 1922. Thermostats for use with the cooling systems of internal - combustion engines are provided with volatile fluid in a container having bellows-like walls I, which contract when the temperature exceeds a predetermined amount, thereby opening a valve R for the release of air.
Patent GB-1409451-A (GB)
Title: Magnetic tape cassettes
IPC: G11B23/087
Filed: 1973-05-07
Abstract: 1409451 Record-tape cassettes SONY CORP 7 May 1973 [9 May 1972] 21593/73 Heading G5R Accidental erasure of a recording is prevented by means located at the rear comers of a cassette, e.g. recesses 19, 19<SP>1</SP>, Fig. 3, which cooperate with a sensing lever of a tape recorder and are originally blocked by manually breakable projections 20, 20<SP>1</SP>. Windows 35, Fig. 6, allow observation of the tape on the hubs (which carry reference marks 34) and of indicia 36 which differ on the two sides of the cassette.
Patent GB-1391025-A (GB)
Title: Locking caps for tanks
IPC: B60K15/04
Filed: 1973-05-07
Abstract: 1391025 Locking caps for tanks P JOURNEE 7 May 1973 [19 May 1972] 21597/73 Heading B8T A locking cap for a tank is characterized by a non-return valve which allows the tank to breathe in, but not out, unless the locking key is inserted, which action allows excess pressure to be released.  The cap has a closure member 2 with a hub portion 3 carrying a fixed ring 5, an annular sealing gasket 6 and a locking ring 4 which locates beneath the rolled edge of the tank intake pipe 1. Within the hub 3 is a lock barrel 7 and beneath it a valve consisting of a cylinder 8 and a piston 9 with a frusto-conical head 10 which is normally held against a seat 11 by a spring 12 to form a seal. When a key 13 is inserted, its end pushes the piston head 10 off the seat 11 and connects the annular gap which surrounds the lock barrel 7 to the inside of the tank. Gases can then escape via the radially interconnected concentric grooves on the underside of the closure member 2 and are defected downwards by the skirt of the cap. Negative pressures within the tank are eliminated since they give rise to downward forces on the piston 9, thereby opening the valve against pressure from the spring 12. A second embodiment shows an annular antipollution filter included in the venting circuit.
Patent GB-1462738-A (GB)
Title: Filter for tobacco smoke
IPC: A24D3/14
Filed: 1975-05-20
Abstract: 1462738 Filters ROTHMANS OF PALL MALL CANADA Ltd 20 May 1975 [27 Jan 1975] 21644/75 Addition to 1381800 Heading A2C A filter of the type disclosed in Specification 1381800 in which the weight of the polymeric materials exceeds 6 mg and the pressure drop along the filter is from 1 to 10 inches of water at a flow rate of 17.5 ml/sec.