baber/WOPTO huggingface dataset:
Patent GB-1420517-A (GB)
Title: Manufacture of stabilized woven structures
IPC: D03D15/00
Filed: 1973-10-05
Abstract: 1420517 Finishing fabrics; woven fabrics DU PONT OF CANADA Ltd 5 Oct 1973 [26 Oct 1972] 46730/73 Headings D1S and D1K A woven fabric is formed from tapes in the form of a laminate of which a surface layer is a low density ethylene polymer film and an adjacent layer is high density ethylene polymer film or polypropylene film, using one such tape as warp and the same or another such tape as weft, and is heated to improve the weave stability thereof. A specified laminate comprises a high density ethylene polymer film sandwiched between two low density ethylene polymer films. Low density ethylene polymers are defined as ethylene polymers and ethylene/ higher α-olefin copolymers of density in the range of 0.910-0.930. Preferably, the gauge of the low density polymer in each tape is in the range of 0.05-0.60 mil and at least one tape is used which contains a high density ethylene polymer or polypropylene having a gauge in the range of 1.0 to 2.0 mil. The tapes may be oriented prior to the weaving of the fabric. Preferably, the fabric is heated so that the temperature of the low density ethylene polymer is between the softening point and the melting point of said polymer. Heating may be effected by the use of a hot air oven, radiant heaters, at least one heated roll or a tenter frame.
Patent GB-992713-A (GB)
Title: Improvements in furniture and like castors
Inventor: HOLT ROBERT WILFRED
IPC: B60B33/00
Filed: 1961-12-30
Abstract: 992,713. Castors. HOMA ENGINEERING Ltd. Dec. 7, 1962 [Dec. 30, 1961], No. 46811/61. Heading A4U. A castor 1 is secured to a tubular leg 15 by an expansible bush 10 which is cored to embrace a screw 6 projecting from the castor and is recessed at its upper end to receive a nut 12 engaged with the screw 6, a non-ferrous washer 14 being fitted around the screw and interposed between the lower end of the expansible bush 10 and a nut 9 above the upper surface of the castor, the washer 14 having a peripheral margin 14a protruding beyond the bush 10 for engagement with the tubular leg 15. The screw 6 extends through a ball race housing 8 with its head 7 bearing against the underside of a transverse bridge 5 of the castor. The nut 9 secures the screw 6 to the upper part of the ball race housing.
Patent GB-1179542-A (GB)
Title: Vehicle Cooling System
IPC: F01P7/08
Filed: 1968-10-03
Abstract: 1,179,542. Friction clutches. FICHTEL & SACHS A.G. 3 Oct., 1968 [5 Oct., 1967], No. 46909/68. Heading F2C. [Also in Divisions F1 and G1] In an engine cooling system for an automotive vehicle having a radiator 1 and a fan which can be driven from a pulley 2 through a thermostatically actuated clutch, the housing 10 of the clutch actuator 9 carries fins 14 of good thermal conductivity projecting into the airstream through the radiator to improve the sensitivity of the actuator 9. The latter contains a body 11 of paraffin and copper particles confined within the housing 10 by a rubber diaphragm 12 having an integral plug engaging a plunger 13 which, in turn, engages the centre of a flexible metal clutch diaphragm 5. The latter is secured to the fan hub 7 by axial lugs 4 passing through radially oversized slots in the diaphragm 5. The periphery of the diaphragm 5 carries a friction facing 5a which can engage the clutch input member 3 when the actuator body 11 expands sufficiently. The fins 14 are formed from two thin copper or copper plated discs each having a central portion 14a secured to the housing 10 and four arm portions 14b obliquely inclined relative to a common radial plane so as to direct some of the air passing through the radiator 1 over the housing 10. The latter may also be copper plated. In a modification. Figs. 3, 4 (not shown), the fins (18) are formed by a helix of sheet metal secured to the housing 10. In further modifications, Figs. 5 to 8 (not shown), the fins are formed by 180 degree segments of sheet metal plates (20) arranged helically and with the possible addition of a surrounding shroud (21) of synthetic resin material.
Patent GB-1415557-A (GB)
Title: Hydrolyzed copolymer of acrylonitrile and an unsaturated acid
IPC: D06M15/356
Filed: 1973-10-09
Abstract: 1415557 Hydrolysis of acrylonitrile/sulphonic acid copolymers CASSELLA FARBWERKE MAINKUR AG 9 Oct 1973 [9 Oct 1972] 47084/73 Heading C3P [Also in Division D1] Acrylonitrile/unsaturated sulphonic acid copolymers, having a K value of 30-140 and containing 0À1-30 wt. per cent of sulphonic acid radicals, are hydrolysed in an aqueous alkali metal hydroxide solution containing 8- 35 wt. per cent alkali metal hydroxide, at 70- 150‹ C., to saponify the nitrile groups to -COOM groups, where M is the cation of the alkali metal hydroxide, and the product is adjusted to a pH of 6-9, e.g. with sulphuric or acetic acid. The starting material may be fibre scraps. In examples, copolymers of acrylonitrile with allyl-, methallyl-, vinyl-, or vinylbenzenesulphonic acids are hydrolysed. Uses.-Textile treating, especially sizing and impregnating.
Patent GB-1235859-A (GB)
Title: Improvements in or relating to telescopic suspension units
Inventor: NICHOLLS LAWRENCE GEORGE
IPC: F16F9/36
Filed: 1967-10-17
Abstract: 1,235,859. Seals; piston-cylinder suspension units. GIRLING Ltd. 9 Oct., 1968 [17 Oct., 1967], No. 47191/67. Headings F2B and F2S. A telescopic suspension unit is sealed by an elastomerie seal 11 having a peripheral lip 11A which engages in a tapered recess provided between a support member 9 and a casing 2, and an inner periphery which engages a piston rod 7, the seal being clamped between the support member and a retainer 12 to deform the seal into engagement. Passages 13 are normally closed by an elastic ring 14 which can be expanded by excess pressure in a space 3 to permit flow of fluid in a space 4 as described in Specification 1,227,949.
Patent GB-1085130-A (GB)
Title: Apparatus for lining metallurgical vessels, such as converters
IPC: F27D1/16
Filed: 1964-11-23
Abstract: 1,085,130. Scaffolding in converters. VEREINIGTE OSTERREICHISCRE EISEN-UND STAHLWERKE A.G. Nov. 23, 1964 [Dec. 23, 1963], No. 47594/64. Heading E1S. [Also in Division F4] When re-lining a converter a conveyer 2 feeds refractories to a paternoster elevator 1 introduced through the top or bottom of the converter and carrying a vertically movable working platform(s) 3. The elevator is supported on the converter by a frame 8 and the platform 3 is rotatable horizontally and may be fixed in any angular position.
Patent GB-1518957-A (GB)
Title: Hall effect device
IPC: H01L43/06
Filed: 1975-11-25
Abstract: 1518957 Hall effect devices STANDARD TELEPHONES & CABLES Ltd 25 Nov 1975 48355/75 Heading H1K A Hall effect device comprises an n-type epitaxial Si layer 1 on a p-type Si substrate 2, the resistivity of the substrate 2 being at least 4 #cm. and at least four times that of the epitaxial layer 1. Silica layers 3 are situated on opposed major surfaces, and ohmic contacts 4 are made to the layer 1 through diffused n<SP>+</SP> region 5. The doner dopant in layer 1 is chosen to have a low diffusion coefficient so that it does not significantly penetrate the substrate 2 during growth of the layer 1.
Patent GB-984020-A (GB)
Title: An improved clutch arrangement in a motor driven steerable machine
Inventor: PUTNAM ARTHUR CHARLES
IPC: F16H48/12
Filed: 1962-12-24
Abstract: 984,020. Rotary-scythe mowers. HAYTERS Ltd. Dec. 4, 1963 [Dec. 24, 1962], No. 48564/62. Heading A1F. [Also in Division F2] A four-wheeled motor-driven steerable rotary-scythe grass cutter comprises rear wheels 10, 11 respectively rotatable on and fast with an axle 17, clutch linings 15, 16 on a motor-driven sprocket 14 rotatable and axially slidable on the axle, clutch driven plates 21, 28 respectively fast with the wheel 10 and axially slidably keyed on the axle, and a manually controlled lever 30 movable into three positions, viz. rightward, in which the plate 28 is axially urged, through a needle thrust bearing 29, to fully engage the sprocket 14 which in turn is axially urged to fully engage with the plate 21, thereby providing a firm drive to both wheels; leftward, in which the plates are disengaged from the sprocket; and intermediate, in which a slipping drive is provided to enable the cutter to be steered during drive. A hand lever 43 in a gate 47 acts on the lever 30 through a rod 38 and a nut 46. A strong spring 45 and a weaker spring 42 are interposed respectively between a frame member 32 and the lever 30 and between a frame member 41 and the rod 38. With the hand lever in one end notch of the gate the nut 46 clears the lever 30 to allow the spring 45 to urge rightwardly the lever 30; with the hand lever in the opposite end notch of the gate the lever 30 is leftwardly urged against the spring 45; and with the hand lever freely floating, the sprocket 14 is gripped lightly between the plates 21, 28 by a force equal to the difference of the forces exerted by the two springs. The front wheels are freely mounted and preferably means is provided adjustable to raise the front end of the frame, together with the cutter, with respect to the wheels. A multi-bladed cutter plate may be mounted for rotation in a horizontal plane. A single motor drives both the cutter and the rear wheels.
Patent GB-1242699-A (GB)
Title: Speed controller
IPC: G05D13/00
Filed: 1968-10-14
Abstract: 1,242,699. Automatic speed control. MITSUBISHI JUKOGYO K.K. Oct. 14, 1968 [Oct. 14, 1967; Oct. 30, 1967], No.48646/68. Heading G3R. In order to retroactively control the speed of a rotating machine 19 over a wide range, a special tachometer generator is employed. The latter employs a rotatable permanent or electromagnet 11 and a rotatable annulus 12 carrying a pick up coil 13. One of these is coupled to the machine 19 and the other driven by a motor M. When the machine 19 is required to run at its rated speed the annulus 12 is stationary and the system acts like a conventional tachogenerator system the output frequency of coil 13 being converted to a voltage in discriminator 30 and compared with a reference 32 to control a valve 20 adjusting the speed of the machine. The reference 32 is normally fixed but a small variation in speed can be provided by altering the reference. When, however, it is required that the machine rotate at a speed well removed from its rated speed the annulus 12 is rotated at a speed corresponding to the difference between the rated and derived speed so that the output frequency of coil 13 is proportional to the difference between the speeds of motor 14 and machine 19 and valve 20 adjusts the speed to the new desired speed (the reference 32 still being the rated speed). The speed of electric motor 14 is controlled by a further loop, including tachogenerator 15, according to a speed setting device 16.
Patent GB-1038900-A (GB)
Title: Semiconductor device and fabrication thereof
IPC: H01L29/778
Filed: 1964-12-01
Abstract: 1,038,900. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 1, 1964 [Dec. 30, 1963], No. 48679/64. Heading H1K. The channel of a unipolar transistor comprises a thin layer between two gate regions of different materials and opposite conductivity types, the channel being of the same material as one of the gate regions but of the opposite conductivity type. In a first embodiment, Fig. 1 (not shown), the device is fabricated by epitaxially depositing an N-type Ge region 3 from the vapour phase on to a P-type GaAs substrate 20 , an inversion layer 12 being formed which constitutes the channel. Ohmic contacts 5, 6, 7 and 8 are applied to the two gate regions and the ends of the channel respectively. As shown, Fig. 2, N-type Ge region 22 is formed on P-type GaAs substrate 20 forming P-type Ge inversion layer 27 which is contacted by P-type Ge source and drain regions 21 and 23. In a further embodiment, Fig. 3 (not shown), the channel comprises a thin P-type Ge layer 31 epitaxially deposited on a P-type GaAs substrate 30. The central portion of layer 31 is masked and deposition continued to produce thicker source and drain regions 32a, 32b, and N-type Ge is then deposited over the central portion to produce the second gate region 33. Complementary devices may also be produced.
Patent GB-1356539-A (GB)
Title: Clutch release bearings
IPC: F16D23/14
Filed: 1972-10-23
Abstract: 1356539 Clutch control SKF INDUSTRIAL TRADING & DEVELOPMENT CO BV 23 Oct 1972 [23 Oct 1971] 48751/72 Heading F2L In a clutch release bearing having outer and inner races, 2, 3 respectively, a portion 5 of the outer race serves to engage the release members of the clutch and the inner race 3 has an axial extension 7 on which an end plate 9 is fitted, shaped as shown with diametrically opposed lugs 15 which support spring members 8 which engage with the clutch operating lever. The spring members 8 are supported by elements 15 press mounted on the lugs 15, with nose portions 16 to receive ends of springs 18, an integral tail portion 17 defining, along with a spring 18, the space for reception of an arm of the clutch operating lever.
Patent GB-1411543-A (GB)
Title: Records bearing information which can be reproduced by means of a pressure transducer
IPC: G11B3/64
Filed: 1971-10-21
Abstract: 1411543 Laminated record EMI Ltd 23 Oct 1972 [21 Oct 1971] 48880/71 Heading B5N [Also in Divisions B2 and G5] A copy record bearing information as a pattern of surface deformations comprises a layer bearing a cast of said deformations on one surface thereof and a second layer laminated to the first layer for modifying the mechanical properties thereof. The record is made either (a) by casting a first material on a master record of the deformations and after solidification laminating with the further layer or (b) by firstly laminating the two layers, then preparing the surface of the first layer by heat or solvent treatment to take the cast, casting the treated surface on the master record and solidifying the thus-deformed surface. The master record can be in the form of a flexible member adherent to a rotatable cylindrical base plate and against which the material of the first layer may be continuously cast. Alternatively the master record may be formed on the base plate itself, or the base plate may be flat and linearly movable. The first material may be polypropylene or polyethylene cast as a melt, a polymethacrylate or cellulose ester cast as a solution, or P.V.C. cast as a liquid mixture with a plasticizer. The second layer, which may be of the same material as the first, is applied by spraying, heat bonding or the use of adhesive. The record may particularly comprise a first layer of P.V.C. containing 10-25% by weight of plasticizer and a second layer of P.V.C. with 30-45% plasticizer. A backing layer may also be applied.
Patent GB-1350780-A (GB)
Title: Process for the production of neutral calcium hypochlorite crystals
IPC: C01B11/06
Filed: 1971-10-21
Abstract: 1350780 Neutral Ca hypochlorite KLIPFONTEIN ORGANIC PRODUCTS CORP Ltd 21 Oct 1971 [27 Oct 1970] 48893/71 Heading C1A Crystals of neutral Ca hypochlorite are produced by reacting a slurry of lime containing at least 600 p.p.m. Fe with a chlorinating agent in the presence of a substance which forms insoluble salts with Fe-containing ions, to form crystals of basic Ca hypochlorite, separating the crystals from the suspension of Fe compounds, and chlorinating the crystals to form neutral crystals. The added substance may be Ba, Sr, Cd, Zn, Hg or Ag ions, preferably as chloride, whereby ferrates and ferrites are formed. The chlorinating agent may be Cl 2 Cl 2 O, hypochlorite, or hypochlorous acid. The process is preferably operated cyclically, lime being reacted in the first stage with saturated Ca hypochlorite solution obtained after filtering the neutral crystals, to produce dibasic Ca hypochlorite, which after settling and filtering (filtrate being recycled to either stage) is reslurried and reacted with Cl 2  and a little lime.
Patent GB-1002636-A (GB)
Title: Automatic transfer apparatus
IPC: A24C5/35
Filed: 1963-12-12
Abstract: 1,002,636. Shoots and hoppers; endless conveyers. ZAVODY V.I. LENINA, PLZEN NARODNI PODNIK. Dec 12, 1963 [Dec. 12, 1962], No. 49048/63. Heading B8A and B8S. Fig. 1 shows cigarettes from a making machine (not shown) being transferred by endless belts 1, 3 to a receiving funnel 6 of a packing machine 7. A feeler 41, if lifted too high by an accumulation of cigarettes stops the making machine. The belt 3 is mounted on rollers carried by a frame 8 supported by pivoted levers 9, 10 so that it may be moved upwards or downwards in the direction of its length (see arrows 13). The frame 8 is raised or lowered by a reversible electric motor 19 controlled by contacts 32, 33 on an arm 36 of the frame 8 co-operating with a feeler contact 30 pivoted to the frame 8 at 31 so that the discharge end of the belt 3 is kept at the level of the cigarettes in the funnel 6. A weight 20 falls as the level of the cigarettes rises in the funnel 6 and if it rises too far operates switch 22 to switch off the making machine (which is started again by switch 24 as the weight 20 rises). If the level of cigarettes in the funnel 6 falls too far, the weight 20 rises to switch off the packing machine 7 by means of a switch 23 (switch 25 re-starts the packing machine as the weight 20 falls. Fig. 2 shows a modification wherein cigarettes are transferred from a making machine (not shown) by belts 1, 4. The belt 4 is mounted on a frame 42 pivoted on a bearing 43 so that its discharge end can move as indicated by an arrow 44. A pivoted feeler device 30 with contacts 32, 33 controls the position of the discharge end of the belt 4 and the making and packing machines are switched on and off as described with reference to Fig. 1.
Patent GB-1130253-A (GB)
Title: Cylindrical containers of cardboard or the like
Inventor: HILL GEORGE EDWIN
IPC: B65D3/28
Filed: 1966-11-04
Abstract: 1,130,253. Portable containers. PAZO CO. Ltd. 7 Sept., 1967 [4 Nov., 1966], No. 49504/66. Heading B8D. [Also in Division F2] An impervious layer 2 on the inside of a cylindrical or oval drum formed by helically winding cardboard &c. strip 1<SP>1</SP> lies at its edge against a feathered edge 4 of the cardboard &c. The impervious layer 2 may be of aluminium. The drum may have a wall comprising more thin one layer, the layer 1<SP>1</SP>, 2 being the innermost.
Patent GB-1143256-A (GB)
Title: Improvements in or relating to heat-insulating window assemblies
IPC: E06B3/67
Filed: 1966-11-07
Abstract: 1,143,256. Double glazing. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 7 Nov., 1966 [10 Nov., 1965], No. 49785/66. Heading E1R. One or more of the surfaces of the panes 1, 2 of a multi-glaze unit is/are provided with an infra-red reflecting layer 4 of tin dioxide or indium oxide, and the space 5 between the panes may be filled with dried air or with crypton gas of thermal conductivity less than that of air. The layers may be on one pane only as shown, on the internal faces of both panes, or on the internal face or external face of one pane only.
Patent GB-1059800-A (GB)
Title: Preparation of benzo-thiadiazole derivatives
Inventor: KIRBY PETER
IPC: C07F9/6541
Filed: 1964-12-08
Abstract: The invention comprises 7-hydroxy-1,2,3-benzothiadiazole and a general method for making hydroxy-1,2,3-benzothiadiazoles comprising diazotization of the appropriate amino-benzothiazole and acid hydrolysis of the diazotized reaction mixture. Diazotization is effected under known conditions using a concentrated or dilute mineral acid.  It is preferred to use a dilute acid as the hydrolysis stage proceeds more rapidly in dilute solution.  If a concentrated acid is used in the diazotization step, it is preferred to add water to accelerate the hydrolysis.  Hydrolysis also proceeds more rapidly if the mixture is heated to reflux. Examples IV to VI describe the preparation of the 5-, 6- and 7-hydroxy-1,2,3-benzothiadiazoles.  The aminobenzothiazole starting materials are prepared by the reduction of the corresponding nitro-compounds.  Example III describes the reduction of 7-nitrobenzothiazole using stannous chloride and HCl. The nitrobenzothiazoles are made by nitration of benzothiazole or, for the 5-isomer, by the reaction of 2-mercapto-5-nitroaniline with formic acid.  Examples I and II relate to the preparation of the nitro compounds.  2-Mercapto-5-nitroaniline is prepared by reacting 2-bromo-5-nitroaniline with sodium sulphide.
Patent GB-1374628-A (GB)
Title: Fastening means
IPC: F16B39/30
Filed: 1971-10-27
Abstract: 1374628 Self-tapping screw R J EVANS 27 Oct 1971 [9 Nov 1970] 50011/71 Heading B3N [Also in Division F2] A self-locking screw 11 has a displaced or widened thread portion 30 such that as the screw is engaged in a nut 40 whose thread grooves are wider than the screw threads 16 (except for the portion 30) and whose minor thread diameter, prior to insertion of the screw, is less than the diameter across the roots 26 of the screw shank (apart from lead and ramp portions 18, 20 adjacent thread portion 30), material from the crests of the nut thread is displaced into the flank clearance, as at 50, to lock the nut and screw. When the screw is withdrawn the flank 34 of the portion 30 engages and reworks the displaced material 50, forcing it back to the crests of the nut thread, thereby enabling the nut and screw assembler to be used several times. Moreover initially the screw 11 may be self tapping so that when inserted in a suitably bored hole it simultaneously taps the bore of the hole and displaces the material of the crests into the flank. The material is forced back to the crest on withdrawal of the screw. The thread portion 30 may be enlarged as shown at 30 in Fig. 3 or displaced along the axis of the screw as shown at 30A in Fig. 5. Alternatively the angle of the flank 34B of the thread may be such that the flank is less steep and if desired its opposite flank 36B move stays Fig. 6. A further arrangement ensures that the displacement causes material in the groove of the nut to be moved to the crest where its root of the srcew moves it back between a groove of the unit and flank of the screw, Fig. 7 (not shown).In addition the screw may have an enlarged root portion at the outer end which provides additional resistance to the disengagement of the screw and nut, Fig. 8 (not shown). The enlargement of the portion 30 may be of the lower portion only of the thread, Fig. 9 (not shown), or the steepness of the flank may be increased to provide the widened potion, Figs. 11 and 12, not shown.
Patent GB-1458477-A (GB)
Title: Resinous butadiene/styrene reinforcing copolymers
IPC: C08F257/02
Filed: 1974-11-19
Abstract: 1458477 Two-stage copolymerization of styrene and butadiene GOODYEAR TIRE & RUBBER CO 19 Nov 1974 [14 Dec 1973] 50027/74 Heading C3P A mixture of styrene (95-85) and butadiene (correspondingly 5-15) is polymerized in aqueous emulsion in the presence of a molecular weight modifier to obtain a first latex, then further styrene (80-65) and butadiene (correspondingly 20-35), water, emulsifier, initiator, and molecular weight modifier are added and polymerization is completed, the ratio of total monomers in the first step to total monomers in the second step being from 75-25 : 25-75.
Patent GB-1362818-A (GB)
Title: N-alkoxyalkylidenesulphonamide compounds
IPC: A01N41/06
Filed: 1971-11-02
Abstract: 1362818 Sulphonimides ELI LILLY & CO 2 Nov 1971 [3 Nov 1970] 50800/71 Heading C2C The invention comprises compounds of the formula where R<SP>1</SP> is H or R<SP>2</SP>, each R<SP>2</SP> is C 1-4  alkyl, C 3-4  alkenyl, C 3-4  alkynyl or n is 0 or 1, Y is OCH 3 , CN, Br or Cl, subject to the limitation that R<SP>1</SP> and R<SP>2</SP> together contain 2-8 carbon atoms, R<SP>3</SP> is H, C 1-2  alkyl or phenyl and R<SP>4</SP> is C 1-8  alkyl, allyl or 2-chloroethyl. The compounds may be prepared by reacting together compounds of the formulae with The compounds may be used in herbicidal compositions.