baber/WOPTO huggingface dataset:
Patent GB-1091246-A (GB)
Title: Improvements in or relating to semiconductor bodies for producing or amplifying electromagnetic radiation
IPC: H01S5/30
Filed: 1964-12-11
Abstract: <FORM:1091246/C4-C5/1> A radiation emitting or amplifying device comprises a PN junction at least one peripheral portion of which is in contact with a region of the body having a high resistivity.  As shown, P- and N-type regions 2 to 13 are diffused into both faces of an intrinsic or high resistivity wafer 1 to form a plurality of coplanar PN junction diodes which are connected together and biased in the forward direction so that they emit radiation.  The intrinsic body helps to conduct the heat generated away from the junctions. The faces 21, 22 of wafer 1 may be made optically flat and parallel, e.g. by cleaving, so that the diodes may operate as lasers.  Wafer 1 may comprise a III-V compound such as GaAs, GaSb, InAs, InP, InSb, and mixed crystals of these compounds.  The device may be used as a lamp, e.g. the red rear lamp of a motor car.  A plurality of alternately poled diodes may be connected to an A.C. supply, in each half cycle of which the forward-biased diodes emit light while the reverse-biased diodes act as capacitative resistors or tunnel diodes depending on their doping level.  In a second embodiment, Fig. 2 (not shown), an intrinsic or high resistivity layer (42) is epitaxially deposited on a doped wafer (41) and regions (44, 45) are diffused through layer (42) to form light emitting junctions.  Alternatively a doped layer (41) may be epitaxially deposited on an intrinsic wafer (42).  In a further embodiment, Fig. 3 (not shown), an intrinsic or high resistivity layer (62) is sandwiched between two layers (63, 64) of opposite conductivity types and has regions (65, 66) forming the PN junctions.  This device may be produced by epitaxially depositing layer (62) on a wafer which forms either layer (63) or layer (64), diffusing-in regions (65 and 66) and then epitaxially depositing the remaining layer.  An injection laser, Fig. 4 (not shown), comprises an intrinsic body (71) containing N- and P-type regions (72, 73) which form a light-emitting junction (74).  Metallic reflecting surfaces (75, 76) are applied to the faces of body (72) to partially reflect the light without short-circuiting the junction.
Patent GB-1189510-A (GB)
Title: Improvements in or relating to Travelling Wave Tube Arrangements
IPC: H01J23/083
Filed: 1967-11-07
Abstract: 1,189,510. Travelling-wave tubes. SIEMENS A.G. 7 Nov., 1967 [8 Nov., 1966], No. 50557/67. Heading H1D. In a travelling-wave tube having a slow wave helix coaxially surrounded by a cylindrical electrode 10, a hollow rotating electron beam 19 is projected into the gap between them, the electrode is held negative with respect to the helix to provide electrostatic centrifugal focusing of the electron beam, and where a is the radius of the helix and # v  is the wavelength, in the axial direction, of the signal applied to the helix. As shown, the helix is mounted on a ceramic tube 2 supported at its ends by the outer conductors 3, 4 of the input and output coaxial lines, and is coupled to the latter by the tapered helices 6, 7. The hollow, rotating beam is produced by a " Harris flow " arrangement of annular cathode 11, modulating electrodes 12 and 13, anode 14, and cylindrical magnet 18 providing an adjustable localized field in the vicinity of the gun. The decelerating electrode 20, held at cathode potential, both deflects the beam on to the electrode 10 which acts as a depressed-potential collector, and also directs back to the electrode 10 secondary electrons produced by impact of the beam thereon.
Patent GB-1388168-A (GB)
Title: Heat treatment and or oxidation of waste liquids
IPC: B01J19/24
Filed: 1972-11-02
Abstract: 1388168 Treating waste liquids STERLING DRUG Inc 2 Nov 1972 [26 Nov 1971] 50606/72 Heading C1C In a process for heating or oxidizing an aqueous liquor or sludge, the liquor or sludge supplied through inlet 20 is heated under pressure in reactor 18, liquid, vapours and possibly some solids are discharged through line 26 and settled solids are discharged continuously or intermittently through line 36 to be mixed with the stream discharged through line 26. The liquor or sludge is preheated in heat exchangers 12, 14, 16 by heat from the streams discharged through lines 26 and 36. Air may be supplied to reactor 18 through inlet 20 or inlet 38. The reactor has baffles 24.
Patent GB-1220273-A (GB)
Title: Radiant furnace with atmosphere regulation
IPC: C21B13/10
Filed: 1968-10-30
Abstract: 1,220,273. Furnace with special atmosphere. NIPPON KOKAN K.K. 30 Oct., 1968 [11 Nov., 1967], No. 51416/68. Heading F4B. Material to be heated in a controlled atmosphere is fed to a region 5 separated from a combustion chamber 2 by a radiant heattransparent member 7. The member 7 may be reticulated or perforated, or formed of heatresistant glass. Reducing gas is fed to the region 5 and burns as it passes through the reticulated member 7 to the combustion chamber 2, into which burners 1 deliver oxidizing flames, A heat exchanger 8 in the waste gas outlet preheats the combustion air, and a damper 9 in the flue stack controls the pressure within the combustion chamber 2 and the working region 5. The member 7 which may be of wire gauze, may be coated with a catalyst to accelerate the combustion of the atmosphere gas. The reticulated member may surround material on a conveyer passing through a tubular furnace, Fig. 4 (not shown). The atmosphere within the region 5 differs from that fed into the region, but remains reducing.
Patent GB-1390534-A (GB)
Title: Process for the preparation of quaternary ammonium salts
Inventor: OGATA YUZURU
IPC: C07C219/12
Filed: 1972-11-08
Abstract: 1390534 Quaternary ammonium halides KAO SOAP CO Ltd 8 Nov 1972 [9 Nov 1971] 51515/72 Heading C2C The invention comprises quaternary ammonium halides of formula in which R is an alkyl, alkenyl or cycloalkyl radical containing 1 to 17 carbon atoms, each of R 1 , R 2  and R 3  is an alkyl or alkenyl radical containing 1 to 18 carbon atoms and X is a halogen. The compounds are made by (1) forming a salt of a tertiary amine of formula and a carboxylic acid of formula R.COOH and (2) reacting this salt with an epihalohydrin.
Patent GB-1255359-A (GB)
Title: Pipette pump
IPC: A47G23/02
Filed: 1969-10-21
Abstract: 1,255,359. Vacuum pumps; raising liquids by vacuum. BIO-DYNAMICS, Inc. Oct. 21, 1969 [Oct.25, 1968; Sept.30, 1969], No.51551/69. Headings F1N and F1R. A pump which creates a vacuum for sucking liquid into a pipette comprises a housing 11 having a projection 20 for receiving the pipette and a large piston 12, 36, 27 sealed by an O-ring 30, the piston being pushed into a chamber 16 to expel air and being retracted by a spring 41 to suck liquid into the pipette. A small piston 13, 35, 36 slides inside the large piston 12, 26, 27, which piston may be displaced alone to pipette small quantities. Depression of a cap 15 displaces the small piston until resisted by the abutment of an adjustable stop 70 on the small piston with the end 71 of the large piston. If the large piston is also to be displaced, the cap is pushed in further until a stroke adjustment screw 78 contacts a fixed cross-pin 45. The cap may be provided with a scale which provides an indication of the small piston's stroke.
Patent GB-1209155-A (GB)
Title: Improvements in or relating to methods and apparatus for the manufacture of gramophone records
IPC: B29D17/00
Filed: 1967-11-15
Abstract: 1,209,155. Moulding gramophone records. LES INDUSTRIES MUSICALES ET ELECTRIQUES PATHE MARCONI. 15 Nov., 1967 [29 Nov., 1966], No. 51893/67. Heading B5A. In a gramophone record injection moulding apparatus the matrices are carried by mould parts 4, each of which has concentric fluid flow channels of which the channels 15 located between the radii R 2  and R 1  are in a circuit which is separate from that of the interconnected channels 16 and 18. The channel 16 is adjacent the injection nozzle and the channel 18 is adjacent the peripheral edge of the associated matrix. In operation, cooling fluid is circulated in the channels 16 and 18 during the moulding cycle while hot fluid is circulated in the channels 15 during the injection after which cooling fluid is circulated in said channels 15. The sprue and centre part of the record are rapidly cooled and the tendency for flash to flow out of the peripheral space between the matrices is reduced. The periphery of the mould cavity may be connected to vacuum via shallow grooves.
Patent GB-1087090-A (GB)
Title: Process for the manufacture of anhydrous sodium sulphite
IPC: C01D5/14
Filed: 1964-12-29
Abstract: Anhydrous Na2SO3 is prepared by the reaction of a gaseous mixture containing SO2 and at a temperature of 200-600 DEG  C. with an aqueous solution containing sodium sulphite, the SO2 content of the gas being such that the heat of neutralization together with the sensible heat of the gas stream is sufficient to dehydrate the reaction solution such that subsequent addition of Na2CO3, or NaOH to the residual solution precipitates anhydrous Na2SO3 which is removed, the mother liquor being recycled as said solution containing sodium sulphite.  In the Figure (not shown) hot SO2-containing gases are contacted first with a falling thin film of solution containing solution, then this solution is sprayed into the gas, and then the residual gases are contacted with a further quantity of the solution in a packed column. The resulting solution from all three stages is collected and neutralized, the resulting slurry separated and mother liquor recycled.  The gaseous mixture is preferably obtained by burning one or more of elemental sulphur, sulphur ore, a metal sulphide or hydrogen sulphide and the mixture may also contain SO3 and oxygen.  Any solid or mist may be separated from the combustion gases by an appropriate separator before the gases are used. The gas mixture preferably contains 2 to 18% by volume of SO2 and the aqueous solution contains a total content of sodium compounds of between 16% by weight and saturation. The preferred neutralizing agent is sodium hydroxide.
Patent GB-1489385-A (GB)
Title: Alarm signal communication systems
IPC: G08B25/00
Filed: 1974-12-09
Abstract: 1489385 Intruder alarms ANATRONICS CORP 9 Dec 1974 [10 Dec 1973] 53067/74 Heading G4N [Also in Division H4] An alarm system for use by e.g. bank staff makes use of concealed transmitting arrangements which may be worn on the person and each of which includes a transmitter, a battery power supply and a pressure actuated switch. These items may for example be included in a belt, the switch being operated by the flexing of the wearer's stomach muscles. The transmitted alarm signals are detected by a radio receiver and to this is connected a relay which detects when a received alarm signal is received continuously for a predetermined period of time. When such a signal is detected an alarm signal is supplied, e.g. by a further radio link, to an alerting station. This may for example be a police station. Other alarm or protection arrangements, e.g. cameras, may be switched in, and other detectors such as sound, ultra sound or radar detectors may be coupled to the relay detector.
Patent GB-1365794-A (GB)
Title: Marker with writing filter a process for manufacturing said mar ker and a devive for carrying out said process
IPC: B43K8/02
Filed: 1972-11-17
Abstract: 1365794 Fibre-tip pens L BAROSSO 17 Nov 1972 [30 June 1972] 53207/72 Heading A4K [Also in Division B5] A fibre-tip pen has an integral fibrous unit 5 forming an ink reservoir 4 and a nib 6, the nib 6 having a length of substantially 30% of the unit, being hardened by impregnation with plastics material and compressed with heat to form a nib of smaller diameter than the reservoir. A mould in which the unit is compressed and heated preferably at 200 kg and within the range 100 to 250 ‹C comprises two halves 8 each having an insulating portion 9, a conducting portion 10 and a resistor 11 between the two portions 9, 10.
Patent GB-1091010-A (GB)
Title: Process for the preparation of alkyl-cyclohexenes
IPC: C07C5/11
Filed: 1965-12-15
Abstract: Alkylcyclohexenes (including 9,10-octalin) are obtained by reacting, in the liquid phase, an alkylbenzene (including tetralin) with potassium and/or rubidium and with a primary amine. Examples describe the production of 1-methyl-cyclohexene from toluene, 1-isopropylcyclohexene from cumene, 1-t-butylcyclohexene from t-butylbenzene, 1,2-dimethylcyclohexene from o - xylene, 1,3,5 - trimethylcyclohexene from mesitylene, and 9,10-octalin from tetralin.
Patent GB-1483290-A (GB)
Title: Disc brake
IPC: F16D55/226
Filed: 1974-12-10
Abstract: 1483290 Floating caliper disc brakes; cotters ALFRED TEVES GmbH 10 Dec 1974 [20 Dec 1973] 53359/74 Headings F2E and F2H A relatively slidable caliper 1 and disc brake body 2 are interconnected by two elastic sleeves 9 of generally S-shaped cross-section disposed in facing grooves 7, 8 of the caliper and body. The sleeves are disposed with their flat cross webs 12 directed more in a radial direction to the disc axis than to a normal to this direction and are located in the grooves by pins 16 engaging recesses 17 of the sleeve. Preferably the sleeve is provided with apertures 14 in the angle between the cross web 12 and an outer portion 11 to permit the egress of dirt.
Patent GB-1282601-A (GB)
Title: Water purification method and apparatus
IPC: C02F1/52
Filed: 1969-10-31
Abstract: 1282601 Treating waste water WESTERN MECHANICAL Inc 31 Oct 1969 [12 Nov 1968 (2)] 53502/69 Heading C1C Waste water, e.g. that derived from sewage after primary treatment by grinding and settling is fed by gravity or pump 17 into a sealed tank 10 and is treated by forcing oxygen or air and sulphur dioxide from a source 22 through a perforated manifold pipe 21. The pH of the effluent from tank 10 is monitored by a meter 24 which may automatically control a valve 23 in the line for the input of sulphur dioxide. The effluent subsequently flows into a further tank 11 containing a tray supporting pieces of scrap iron and is further subjected to treatment with oxygen and sulphur dioxide supplied by perforated manifold pipe 30. Tanks 10, 11 have towers 20, 39 for the collection of excess oxygen and sulphur dioxide for recycling. The water from tank 11 is passed through a conduit 36 which includes a device 37 for the metered supply of alum and a supply 38 of an alkaline substance, e.g. lime, and is discharged into a tank 42 for further oxygenation or aeration after being thoroughly mixed in a pump 40. The pH of the effluent leaving tank 42 is monitored by a meter 41 which may control the addition of the alkaline material from supply 38. Settling of the waste water occurs in two tanks 13 connected in series and provided with baffles 46, the resulting sludge is collected in tank 15 and the water is treated in one of a pair of parallel filters 14 prior to discharge.
Patent GB-1516099-A (GB)
Title: Ant-bait composition
IPC: A01N25/00
Filed: 1974-12-12
Abstract: 1516099 Ant-bait composition FISONS Ltd 1 Dec 1975 [12 Dec 1974] 53703/74 Heading A5E A bait composition comprises from 0.005- 2% by wt. of a high contact activity insecticide, e.g. bendiocarb, which is active against ants, in admixture with or dispersed in from 1-10% by wt. of a solid contact activity masking agent for the insecticide, e.g. colophony and a solid carrier e.g. citrus pulp or bran.
Patent GB-1109739-A (GB)
Title: Europium activated phosphors
IPC: C09K11/77
Filed: 1965-12-20
Abstract: A phosphor comprises a europium-activated oxide of lanthanum, gadolinium or yttrium prepared using a lithium fluoride flux; the molar concentration of lithium fluoride to the rare earth oxide lies between 0.003:1 and 0.3:1, and the molar concentration of europium to rare earth oxide lies between 0.002:1 and 0.3:1. The mix may be fired in air at 1000-1150 DEG  C., and produces good particle size distribution. The phosphors emit red under ultra-violet or cathode-ray excitation, and may be used in colour television.  The europium may be introduced as oxide or fluoride and the oxide matrix may be produced by reduction of the oxalate or carbonate.
Patent GB-1475006-A (GB)
Title: Anti-theft device
IPC: G08B13/14
Filed: 1975-12-02
Abstract: 1475006 Theft alarms A J C SMITH 2 Dec 1975 [13 Dec 1974] 54096/74 Heading G4N An anti-theft device comprises a flat member 29 having adherent surfaces on both sides and a switch 24 attachable by means of member 29 to a surface 26 of an article to be protected, the switch being so arranged that its movable element 27 is held in one position when the switch is attached to the article and is urged to another position to activate an alarm when the switch is removed from the article. As shown, the movable member is a spring biased plunger 27 which projects through an aperture in the member 29 which may be of cardboard or plastics material. The surfaces of member 29 may be pressure adherent or coated with adhesive which may be pressure-sensitive. The switch is embedded in a block 25 of thermosetting resin. The switch 24 is connected to the alarm, Fig. 1 (not shown), by a flexible twincore coaxial cable 12, the two cores and the switch forming a closed loop when the switch is attached to the article. When the switch is removed, the loop is opened and one of the cores is connected to the screen of the cable to give the alarm. A plurality of such devices may be connected to a single alarm via respective cables 12 and a single common cable, Fig. 1 (not shown).
Patent GB-1237412-A (GB)
Title: Improvements in or relating to glass solders
IPC: C03C3/00
Filed: 1968-12-19
Abstract: 1,237,412. Glass solder. SIEMENS A.G. 19 Dec., 1968 [28 Dec., 1867], No. 54176/68. Heading ClM. A glass solder consists essentially of (A) a glassy first material whose softening point is 280-350‹ C.; and (B) a glassy or ceramic second material of linear expansion coefficient up to 30 x 10<SP>-7</SP>/‹ C. and softening point higher than that of (A); there being in the solder at least 30% by volume of (A) and up to 70% by volume of (B) and there being sufficient material (B) for the solder to have an expansion coefficient of 50-85 x 10<SP>-7</SP>/‹ C., neither (A) nor (B) containing Tl 2 O or CdO. Preferably, (A) has a particle size up to 100 Ám and (B) a particle size of up to 200 Ám. (A) is preferably chosen from the glass systems PbO-B 2 O 3 -SiO 2 , PbO-B 2 O 3 -ZnO and PbO-B 2 O 3 -ZnO-BaO. The second material may be #-eucryptite (Li 2 O.Al 2 O 3 2SiO 2 ), spodumene (Li 2 O.Al 2 O 3 .4SiO 2 ), cordierite, quartz, hard glass, a borate (e.g. lead borate) or a titanate (e.g. lead titanate). The solder may be formed simply by mixing (A) and (B) in comminuted form.
Patent GB-1331507-A (GB)
Title: Metnod and apparatus for securing a connector to a coaxial cable
IPC: H01R24/40
Filed: 1970-11-16
Abstract: 1331507 Coaxial connectors BUNKER RAMO CORP 16 Nov 1970 [17 Nov 1969] 54489/70 Heading H2E A metal ferrule 28 comprising at least two ferrule segments 28 (Fig. 2) having a central bore 42 fits between the insulation 14 and second conductor 16 of a coaxial cable 10 (Fig. 1). The two parts of the ferrule have alignment holes 46 to receive pins 44 and channels 48A and 48B to accommodate a retaining ring 50. In use, the ferrule is wedged under the second conductor 16 by metal bush 20 and the sleeve 22 is crimped about the ferrule 28 and conductor 16, a threaded ring 24 being retained by the shoulders of the enlarged diameter ferrule port 30 to enable the crimped arrangement to be attached to the connector 19. The insulation 14 is cut back flush with the flat face 36A and 36B of the ferrule. The connector 19 may comprise an insulating disc 51, a plug terminal 52 being attached to the inner conductor 12 by solder through coil 54, an insulating bushing 62, a metal enclosure 56 and screw ring 64.
Patent GB-1402270-A (GB)
Title: Thermosensitive colour-forming material
IPC: B41M5/337
Filed: 1972-11-27
Abstract: 1402270 Thermosensitive colour-forming material having cellulose ether binder ING C  OLIVETTI & C Spa 27 Nov 1972 [29 Nov 1971] 54791/72 Heading G2C A thermosensitive material comprises a paper support carrying in a single coating a composition formed by mixing together separately prepared dispersions in a binder of (a) finely divided solid crystal violet lactone and (b) a phenolic acidic compound, the binder comprising at least 5 wt per cent of a non-ionic cellulose ether which acts as a dispersing and binding agent, said (a) and (b) dispersions containing respectively a lubricating agent and a white or weakly coloured pigment capable of absorbing the melted composition. The binder may be methyl cellulose, hydroxypropylmethyl cellulose or hydroxyethylmethyl cellulose. The cellulose ether may be used in combination with starch, modified starch, polyacrylamide, pectine or urea formaldehyde resin. The lubricating agent may be a wax, metal soap or lubricant pigment, e.g. calcium, magnesium, silver, lithium or aluminium stearate, an aminide wax or micronized talcum. The pigment may be clay, kaolin, silica, calcium carbonate, zinc oxide, titanium oxide, magnesium silicate, barium sulphate or talcum. The phenolic acidic compound may be 4, 4'-isopropylidene diphenol or Bisphenol A.
Patent GB-1100409-A (GB)
Title: Novel sulfoxide compounds and process for preparing the same
IPC: C07C317/00
Filed: 1965-12-24
Abstract: The invention comprises sulphoxides having the formula <FORM:1100409/C2/1> or <FORM:1100409/C2/2> in which R1 is a group of structive <FORM:1100409/C2/3> or <FORM:1100409/C2/4> R12 is hydrogen or a C1-C5 alkyl group and X is hydrogen, halogen, a C1-C5 alkyl group, a C1-C5 alkoxy group, a dialkylamino group containing 1-5 carbon atoms in each alkyl substituent or a diarylamino group containing up to 10 carbon atoms in each aryl substituent. The group R1 may carry substituents, e.g. chlorine, bromine, methyl, ethyl, propyl, butyl, methoxy, ethoxy, propoxy, butoxy, dimethylamino, diethylamino or di-(n-propyl) amino, on the benzene ring.  The new compounds may be prepared by reacting at a temperature below 30 DEG C. a phenyl-acetylenic compound of formula <FORM:1100409/C2/5> with an alkyl sulphinyl carbanion having the formula <FORM:1100409/C2/6> and derived from a dialkylsulphoxide and an alkali metal hydride. The alkyl sulphinyl carbanion may be formed in situ.  The reaction is carried out under anhydrous conditions in an inert atmosphere. Numerous phenyl-acetylene compounds which may be used as starting materials are given.
Patent GB-1084500-A (GB)
Title: A mercury vapour fluorescent lamp
IPC: H01J5/12
Filed: 1965-12-28
Abstract: 1,084,500. Discharge lamps. SYLVANIA ELECTRIC PRODUCTS Inc. Dec. 28, 1965 [Dec. 31, 1964], No. 54907/65. Heading H1D. [Also in Division F4] A mercury vapour fluorescent lamp has one of its ends sealed by a glass stem which extends into the lamp and has deposited on it a metal which forms an amalgam with mercury. A lamp (1, Fig. 1, not shown), in a photocopying machine, having indium (21) deposited on one or both glass stems (14) which support the electrodes (15), is mounted with its central portion within the reflector (4) of the housing (2) and its end portions in the cooler end compartments of the housing. The lamp ends are supported by engagement of the terminal pins (17) in the sockets (22).