baber/WOPTO huggingface dataset:
Patent GB-1334966-A (GB)
Title: Control of tooth flank grinding machines for helical gears
IPC: B23F23/12
Filed: 1971-10-07
Abstract: 1334966 Machine tool details MAAG GEAR WHEEL & MACHINE CO Ltd 7 Oct 1971 [16 Get 1970] 46741/71 Headings B3B and B3K In a tooth flank grinding machine in which helical gears are operated on by an indexing generating method, the grinding stroke is controlled by stops so that the stroke is at a minimum at the beginning of the traverse, at a maximum in a central region of the traverse, and is then reduced at the end of the traverse. The machine comprises a platen 2 slidable on a base 1, a column slidable transversely on the platen, a pivotable plate 4 for adjusting the helix, a ram 5 on plate 4 for adjusting the discshaped grinding wheels 6, 7, and a rotatable work-table 10. Grinding wheels 6, 7 are driven by separate motors 9. Column 3 is traversed by a motor 15 through gearing and clutch drive 16-40, and a lead-screw and nut 41, 42. Table 11 is also rotated by motor 15 through gearing 16-26, 43, clutch 44, and change gears 47-50, and a worm drive 14. The tangential motion of column 3 is matched to the rotation of workpiece 12 by change gears 30-33, and 47-50, thus producing the generating motion between the grinding wheels 6, 7, and workpiece 12. The path of travel of the gear-wheels is reduced to the area A 1 , B, B 1 , C 1 , D, D 1 . The stroke is controlled by a control unit 52, Fig. 4, which comprises a switch 53 mounted on a nut reciprocated along a spindle 55, in synchronism with the motion of grinding wheels 6, 7. Spindle 55 is coupled through bevel gears 56, 57, to a shaft 58 which is coupled through bevel gears 59, 60, in the centre of plate 4, to a shaft 61 driven by a ram spindle 64 through bevel gears 62, 63, spindle 64 being driven through a worm and wheel drive 65, 66, by a reversing motor 68, which reciprocates the grinding wheels. Unit 52 also comprises a horizontally slidable plate 70, to which is connected a wire rope 69 which passes over a pulley 71. A second rope passes from a second pulley 72 to a smaller pulley 74, which is supported, along with an integral larger pulley 75, in column 3. A third rope passes from pulley 75 to a block 77 on platen 2. The pulleys function as a reduction transmission. Two control rails 79, 80, on plate 70, coact with switch 53, and a shaft 81 drives a screwed spindle 85 which is screwed into a nut 86 carrying a switch 87. Opposite end limiting stops 88, 89 are provided for switch 87. The area of traverse is controlled by switches 53, 87, stops 88, 89, and control rails 79, 80. The generating speed is determined by the speed of motor 15 which is controlled by a potentiometer 91, Fig. 4, actuated by cams 92, 93.
Patent GB-1166887-A (GB)
Title: Improvements in Methods for Measuring by Radiometry the Temperature of a Molten Metal in a Container
IPC: G01N33/20
Filed: 1967-10-13
Abstract: 1,166,887. Electro-physical measurement - temperature. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. Oct. 13, 1967 [Oct. 19, 1966; Aug. 11, 1967], No.46852/67. Heading G1N. The temperature of molten metal in e.g. a ladle is determined by detecting black-body radiation in the range 0À5-100 GC/S-transmitted through the refractory lining, comprising e.g. magnesia or dolomite, sillimantite, porous silica, mullite, or zirconica, which are transparent to radiation in this range. . The radiation may be detected by a horn antenna mounted in a hole in the steel sheath of a ladle with a conventional magnesia, lining Fig. 1. Alternatively the horn may be covered by a composite refractory "brick" comprising an inner layer of magnesia; an outer layer of porous silica having good transparency but lower temperature resistance than magnesia, and a separating layer of alumina (i.e. amphoteric oxide). Fig. 2 (not shown). The amplitude of the signal detected by the horn is compared with a reference signal by alternate displace on a potentiometer recorder (after suitable processing) and an attenuator controlling the reference source level may be calibrated in temperature.
Patent GB-1241186-A (GB)
Title: Improvements in or relating to injection moulding method and machine
IPC: B29C45/50
Filed: 1968-10-03
Abstract: 1,241,186. Injection moulding. BUHLER A.G. GEB. 3 Oct., 1968 [4 Oct., 1967], No. 46921/68. Heading B5A. An injection moulding machine of the type in which one or more injection screws rotate and axially reciprocate in a cylinder includes a rotary dosage regulator 24, Fig. 4, at the base of a moulding material feed hopper 13 whereby the quantity of material fed to the feed zone of the screws via a duct 16 is controlled. The regulator has vanes extending radially from a drive shaft 15 and sandwiched between end discs 21, and the shaft may be driven by a unit 4 and a variable gear 19 which drives the screw or by a variable speed electric motor 17; a magnetic. coupling 18 is located between the drives 4 and 17. In an alternative system, the regulator is driven either from the unit 4 or a constant speed electric motor, and in the latter case the dosage adjustment is made by variably masking the compartments between the radial vanes by means of a sleeve 23 adjustable, axially of the shaft 15, by rotating a closure 27. The injection screw comprises a feed zone at the rear end, a metering zone at the front end and an intermediate compression zone; the depth of the threads at the feed zone is greater than that at the metering zone and continuously decreases in the compression zone.
Patent GB-1041763-A (GB)
Title: Filler device for gas lighters
IPC: F23Q2/52
Filed: 1964-11-18
Abstract: 1,041,763. Filler devices for liquefied gas lighters. HEINRICH MALTNER G.m.b.H. Nov. 18, 1964 [Nov. 19, 1963], No. 47037/64. Heading F4F. A filler device for use in filling liquefied gas lighters from a recharge bottle 32 comprises a non-return filler valve operable by the pressure in the recharge bottle, and a venting valve for the lighter opened mechanically by means of the recharge bottle 32. In a first embodiment, Fig. 1, the filler valve comprises a hollow needle 6 having transverse bores 12 terminating in an annular groove 13 covered by a synthetic rubber tube 14 located by an annular groove 15 in the needle 6 or by a clamping ring (not shown). The venting valve comprises a sealing washer 18 disposed between a needle flange 16 and a circlip 17, and urged by a spring 19 acting on a needle ring 20 against a seat 7 on an insert 1. When the neck 31 of the bottle 32 is pushed into a cylindrical recess 4 in the insert 1, the needle 6 seals against a sealing ring 33, pushes a ball 36 away from the sealing ring 33 to open the bottle, and is finally pushed inwards into the filler device against the spring 19. The spring 19 may bear (as shown) against the flanged end 10 of the insert 1, or against a snap ring (not shown). The venting valve may be sited elsewhere on the tank and may be operable independently of the filler valve. The valve on the recharge bottle may be operable by the bottle being screwed into the filler device and not by a needle. In a second embodiment, Fig. 2 (not shown), the synthetic rubber tube is pulled over a thicker portion of the needle 6 so that the tube is located thereby and the upper part of the tube forms the sealing surface of the venting valve.
Patent GB-1358719-A (GB)
Title: Production of formaldehyde
IPC: C07C45/38
Filed: 1971-10-12
Abstract: 1358719 Oxidation catalysts BADISCHE ANILIN- & SODA-FABRIK AG 12 Oct 1971 [13 Oct 1970] 47404/71 Heading B1E [Also in Division C2] A catalyst is formed by mixing at least an iron compound, a molybdenum compound, water and an organic solvent which contains an N or S atom in the molecule, applying the formed suspension to a carrier and heating to 300‹-500‹C. In Example 1, (a) ammonium molybdate in water is added to iron nitrate and ammonium bi-chromate in water to produce a precipitate; (b) formamide is added to separate solutions of ammonium molybdate in water and iron nitrate and ammonium bichromate in water, the two solutions are combined to form a precipitate which is dissolved by heating; (c) precipitate (a) is added to solution (b) to form a paste which is sprayed onto preheated spheres of calcined magnesium silicate at 220‹C which are then heated at 400‹C to give a catalyst containing Mo, Fe and Cr. In Examples 2-5 similar preparative processes are exemplified, Cr being an optional constituent. In Example 3 ethanolamine is used as co-solvent. In Example 5 dimethyl sulfoxide is used as solvent.
Patent GB-1150160-A (GB)
Title: Photographic Processing Solution.
IPC: G03C5/26
Filed: 1966-10-24
Abstract: 1,150,160. Activator solution for tanning development. EASTMAN KODAK CO. Oct.24, 1966 [Oct.24, 1965], No.47706/66. Heading G2C. An activator solution for processing an unhardened gelatino-silver halide emulsion in the presence of a tanning developing agent comprises an aqueous alkaline solution containing a formaldehyde donor, between 30 and 250 mg of free formaldehyde per litre and between 30 and 60 grams per litre of a hydrolysis product of the donor other than formaldehyde e.g. iminodicthanol. Specified donors are oxazolidines z-alkyl-z-nitro- 1,3-propanediols and 2-methyl-2-nitro-1-propanol and sodium formaldehyde bisulphite. The solution may also contain tanning developers alkali metal carbonates, bicarbonates, phosphates and salicylates and requestering agents e.g. EDTA. The activator may be made up as a two part concentrate and used in developing emulsions to produce lithographic plates. The developer may be in the emulsion or activator.
Patent GB-1128455-A (GB)
Title: Dry transfer label and method of application of such a label
IPC: B44C1/17
Filed: 1965-11-12
Abstract: 1,128,455. Transfers. NASHUA CORP. 12 Nov., 1965 [24 Nov., 1964], No. 48017/65. Heading B6C. A dry transfer label comprises a carrier sheet releasably associated with a transfer label unit, said unit comprising a transparent facing -layer in releasable contact with said carrier sheet, a design layer, and an outermost layer of potentially adhesive composition heat-activable to persistents adhesive tackiness, i.e. a state of adhesive tackiness which persists in the composition concerned beyond the time during which the composition remains heated. As shown in the drawing the unit 16, which comprises a transparent facing layer 7 an ink design layer 9 and a coating 11 of potentially adhesive heat activable composition is associated in a low adherence bond with a carrier sheet 14 comprising a backing of paper 3 coated with a release layer 5. The coating 11 may comprise a film of flexible thermoplastic polymeric resin and an intimate dispersion therein of finely divided solid particles of a plasticizer therefor.
Patent GB-1527239-A (GB)
Title: Rotaryanode x-ray tube
IPC: H01J35/10
Filed: 1975-11-24
Abstract: 1527239 X-ray tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 Nov 1975 [27 Nov 1974] 48194/75 Heading H1D An X-ray tube comprises a rotary anode 2 connected to rotor 9 by an insulator 11 (e.g. alumina) which allows the rotor and stator potentials to be the same (e.g. earth potential). the stator-rotor gap to be reduced, and acceleration times to be shortened. Stud 6, bearing 7 and ring 8 constitute a conductive connection between metal envelope 1 and rotor 9. Metal envelope 1 may be non-magnetic at the rotor-stator area so as not to attenuate the magnetic field between the rotor and stator, and should be of low conductivity to inhibit eddy current losses. Ring 8 and rotor 9 may be connected by other rings for adaptation to different temperature expansion coefficients, and shaft 12 between anode 2 and rotor 9 may be insulative. The high voltage is applied via bearing 13 in insulator 14 . Alternatives include the bearings on the same side of the anode, non-metal envelopes such as glass, an anode wheel with a frusto-conical perimeter incident electrons being perpendicular to the shaft axis, a disc-shaped rotor, magnetic bearings with sliding electrical contacts and the stator may be accommodated in a synthetic material envelope.
Patent GB-1496363-A (GB)
Title: Photographic silver halide colour diffusion transfer process
IPC: G03C8/08
Filed: 1975-11-26
Abstract: 1496363 Photographic silver halide colour diffusion transfer process EASTMAN KODAK CO 26 Nov 1975 48653/75 Addition to 1405662 Heading G2C A process comprises imagewise exposing a photo-sensitive element comprising a support bearing at least one photo-sensitive silver halide emulsion layer having associated therewith a non- diffusible sulphonamido dye image-providing compound of Formula (I) as defined in Specification 1405662 which is alkali-cleavable upon oxidation, treating the exposed element with an alkaline processing composition in the presence of a silver halide developing agent and contacting the treated exposed element with a dye image-receiving layer, only the photo-sensitive element being treated with the processing composition before contact is made between the photo-sensitive element and the imagereceiving layer. The exposed element may be immersed in the processing composition which may be non-viscous. The image-receiving layer may contain a cross-oxidizing developing agent e.g. 4- methyl-4-hydroxymethyl-1-phenyl-3-pyrazolidone.
Patent GB-1416678-A (GB)
Title: Removal of mercury from mercury-catalysed anthraquinone  sulphonation reaction products mixtures
IPC: C01G13/00
Filed: 1971-10-20
Abstract: 1416678 Removing mercury from anthraquinone sulphonic acids IMPERIAL CHEMICAL INDUSTRIES Ltd 19 Jan 1973 [20 Oct 1971] 48716/71 Heading C2C [Also in Division C1] Mercury is removed from a mercury-catalysed anthraquinone sulphonation reaction product mixture by diluting the reaction product mixture with water, adding a source of sulphide ions, e.g. H 2 S or alkali metal sulphides, and removing the insoluble mercury sulphide which is formed. The reaction mixture is preferably diluted to provide a sulphuric acid content of from 10 to 30% by weight and a flocculant of the cationic polyacrylamide type is added to assist separation of the mercury sulphide. The reaction product mixture may be one obtained in any conventional mercury-catalysed sulphonation of anthraquinone directed to obtaining anthraquinone-1-sulphonic acid or a mixture of the 1,5- and 1,8-disulphonic acids, e.g. with oleum in the presence of sodium sulphate at 100-125‹ C. and in the presence of mercuric oxide catalyst.
Patent GB-1319136-A (GB)
Title: Electrical circuit arrangements for monitoring temperatures and  supplying warning signals
IPC: G01K3/00
Filed: 1970-10-14
Abstract: 1319136 Temperature alarm systems ROBERT BOSCH GmbH 14 Oct 1970 [15 Oct 1969] 48722/70 Heading G4N A temperature alarm device comprises a pair of electronic switching devices (e.g. transistors 19, 20 and capacitors 27, 28) connected to form a multivibrator and including a temperature sensitive resistor 30 connected so as to influence the operation of the multivibrator, and a warning device 34 arranged to indicate the resulting change in operation. The device 30 may be a resistor having negative temperature coefficient and may be located in the gear-box of a car. As described, the multivibrator is arranged so that it will only oscillate when the oil temperature is dangerously high. The lamp 34 then provides a flashing indication.
Patent GB-969141-A (GB)
Title: Improvements in or relating to electromagnetic wave absorption systems
IPC: H01Q17/00
Filed: 1962-12-28
Abstract: 969,141. Absorbing radio waves. SIEMENS & HALSKE A.G. Dec. 28, 1962 [Dec. 28, 1961], No. 48758/62. Heading H4A. A wall which will absorb electromagnetic radiation comprises a plurality of solid or foamed plastic blocks 2 and a strip 1 of cotton cloth or plastic sheet each impregnated or coated with electrically attenuating resistive particles and interwoven between the blocks in a manner similar to that indicated by the darkened lines. The resistivity of the strip 1 may be arranged to vary across the width of the strip being greater away from the incident radiation. To increase the absorptive effect two or more walls may be disposed one behind the other the cross-section area of the blocks forming one wall being less than that of the blocks forming the wall in front thereof (Fig. 3, not shown), the dielectric constant of the block material may be arranged to increase across the depth of the wall, or the blocks may contain material having a magnetic permeability greater than that of air. Blocks of circular crosssection are also disclosed. Specification 969,142 is referred to.
Patent GB-1244448-A (GB)
Title: Process for improving the optical purity of optically impure lysine monohydrochloride
IPC: A45B11/02
Filed: 1969-10-03
Abstract: 1,244,448. Lysine mono - hydrochloride. STAMICARBON N.V. 3 Oct., 1969 [11 Oct., 1968], No. 48769/69. Heading C2C. The optical purity of optically impure e lysine mono-hydrochloride is increased by crystallization of DL-lysine monohydrochloride from an aqueous solution of the optically impure lysine salt at a temperature of from 30-60‹ C., preferably from 35-55‹ C. The aqueous solution preferably contains an amount of water from 7% less to 7% more than that corresponding to the quantity required to form a saturated solution of the optically pure lysine salt at the crystallization temperature. Speci: fication 963,265 is referred to.
Patent GB-1509978-A (GB)
Title: Treatment of oil shales
IPC: C10G1/00
Filed: 1975-11-27
Abstract: 1509978 Distillate fuel from oil shale J C-MORRELL 23 Nov 1975 48802/75 Heading C5E Higher boiling oil is condensed from the gas and vapour mixture obtained by heating oil shale, heated in a separate heating zone and passed into a cracking zone; the oil vapours and gases from the cracking zone are passed to a dephlegmator from which an overhead product, consisting of distillate, boiling in the range of gasoline, domestic heating oil, diesel fuel and jet fuel, is romoved and a bottoms fraction is recycled to the separate heating zone. A mixture 7 of hydrocarbon vapours and gases from an oil shale retort 1 is partially condensed at 8 to separate a heavy oil 13<SP>1</SP> from an overhead 9 of light oil, water and gas. The heavy oil 13' is heated to 750-950F. at 15<SP>1</SP> and passed into a cracking chamber 16 from which a cracked distillate 17 is withdrawn as overhead and a residue of either coke or coke and oil is produced. The cracked distillate is passed to a dephlegmator 18 in which a heavy oil 22 is condensed and separated from the lower boiling distillate vapour 18'; the heavy oil 22 is returned to the heater 15<SP>1</SP>. Air or an air/steam mixture is passed through the hot spent shale in a gas producer 4 to produce a combustible gas which is used to heat the retort 1; the shale oil from the gas producer 4 can be passed to a cement kiln i.
Patent GB-1467856-A (GB)
Title: Capsule positioning machine
IPC: B65B35/00
Filed: 1974-11-14
Abstract: 1467856 Orienting capsules/rotary conveyers TAKEDA YAKUHIN KOGYO KK 14 Nov 1974 [15 Nov 1973] 49311/74 Headings B8S and B8A Capsules comprising a cylindrical cap slipped over a cylindrical container are removed from the bottom of a hopper H by pockets 15 on a drum TD, the pockets 15 being such that capsules received cap first are held tightly whilst capsules received container first are held loosely and can be ejected from the pockets 15 prior to the discharge station of the drum so that all the capsules reaching the discharge station are similarly oriented. The pockets have portions of reduced diameter serving to grip the caps, the capsules being drawn into the pockets by suction applied via a slot 24 in a backing plate of the drum and extending adjacent the hopper H. Compressed air is supplied to an aperture 25 on the backing plate to eject those capsules received container-first, these capsules being sucked into pockets 22 of a drum ID by suction applied through a slot 29 in a backing plate of the drum ID. The capsules remaining in the pockets 15, and those in the pockets 22 are discharged into a discharge shoot 32 by compressed air supplied via apertures 26, 30. In a first modification (Fig. 5) the capsules are discharged into separate shoots terminating at spaced locations on a conveyer. In a second modification (Fig. 6), the slot 24 and the aperture 25 are replaced by a portioned chamber, and the pockets are open at their bottoms. A coil spring (40) extends around the internal periphery of the drum and is pressed by a rotary member (44) into the pocket at the discharge station to eject a capsule.
Patent GB-1520960-A (GB)
Title: Electrolytic production of metal
IPC: C25C3/08
Filed: 1976-11-26
Abstract: 1520960 Fused electrolyte cells ALUMINUM CO OF AMERICA 26 Nov 1976 [31 Dec 1975 (2) 25 Aug 1976 (2)] 49444/76 Heading C7B Metal is produced electrolytically by electrolyzing between anodic and cathodic surfaces a compound of the metal dissolved in a fused electrolyte, electrolysis being undertaken at a temperature such that molten metal is formed which is subsequently collected in a molten metal pad, the cathodic surface being an array of elements unconnected to the side walls of the cell and extending from the pad towards the anode such that the anode-cathode distance is not greater than 1 in. In one embodiment, the array takes the form of cylindrical studs 10 extending from the molten pad 11 towards the anode 13 such that the distance x is not greater than 1 in. The distance "y" separating the molten metal pad and the anode is preferably at least 2¢ in. The conductive cathodic crucible (e.g. graphite) is insulated from the anode by the refractory insulator 17 (e.g. Al 2 O 3 ). The elements may also have square or triangular cross-section. In another embodiment Fig. 3 (not shown) the elements take the form of a grate (23) supported on a post (24) which in turn is secured to the bottom of the crucible. Alternatively, the elements may be in the form of hollow bodies which contain molten material Fig. 5 (not shown). Thus, tubes (28) extend from the molten metal pad and end just short of the anode (29), with the ends of the tubes closest the anode being open and the tubes filled with molten metal; the tubes may or may not be of electrically conductive material. The cells are particularly useful for preparing Al, e.g. from NaF/AlF 3 /LiF melts containing Al 2 O 3 . Suitable cathode materials are the carbides, borides, silicides and nitrides of the transition metals of Groups IVa, Va and VIa of the Periodic Table; particularly TiB 2  (with or without BN addition); pyrrolytic graphite may also be used as cathode material.
Patent GB-1382233-A (GB)
Title: Antenna lead-through assembly for a radio buoy
IPC: H01Q1/34
Filed: 1973-10-25
Abstract: 1382233 Electric couplings ERJI CENTRE NATIONAL POUR L'EXPLOITATION DES OCEANS and LE NICKEL 25 Oct 1973 [25 Oct 1972] 49846/73 Heading H2E [Also in Division H4] An aerial lead-through assembly for a submersible radio buoy having a tubular body 9 comprises a plug 4 fitting in said body and having a tapered axial bore widening outwardly to receive the inner end part of an aerial 1, which is of complementary shape. The plug 4 also has two generally cylindrical recesses 5a, 5b which are respectively formed at the outer and inner ends thereof. A first toroidal seal 10 is interposed between the body 9 and the plug 4, and may be fitted in an annular groove formed in the latter. A second toroidal seal 6 is fitted around the aerial in the recess 5a, and a connector wire 2 extends from the end of the aerial in the recess 5b to a radio transmitter 3 within the buoy. Each of said recesses is filled with hardenable synthetic resin material on assembly, and a sleeve 7 is fitted over the aerial 1 outwardly of the plug 4. Said sleeve may be made of rubber and be associated with a metal retaining ring 7a. A clamping ring 8 secures the sleeve 7 and the plug 4 to the body 9, and may be fixed by means of plastics material screws 11. An annular retaining channel may be provided in either or each of the recesses 5a, 5b, to promote adherence of the filling material. The aerial 1 may be made of glass fibre with a central multi-strand core. It is stated that the assembly prevents the ingress of water at great depths, and resists the effects of violent impacts.