baber/WOPTO huggingface dataset:
Patent GB-1514279-A (GB)
Title: Methods and apparatus for removing dust from record discs
IPC: H05F3/04
Filed: 1976-11-22
Abstract: 1514279 Cleaning gramophone records WEDGEDWOOD DEVELOPMENTS (HENFIELD) LTD 22 Nov 1976 [23 Dec 1975] 52536/75 Heading G5R [Also in Division H1] To remove dust from a record disc during play, or to prevent its settling, when the disc is negatively charged by friction, negative ions are generated in the neighbouring area, preferably directed over the surface, so that dust may become electrified and repelled by the surface. A brush 3 may disturb the dust, then collected by a pad 6. The ionizer comprises a matrix driven capacitor-rectifier voltage multiplier circuit, mounted between printed circuit boards (Figs. 3, 4, not shown) in a housing, energising strip electrodes 17 bounding an opening 15 in concave face 14 at 200-500 V negative from earth, and point electrodes 16 within the opening at 3-ukv negative, ions from the points being repelled by the field from the strips. Both sets of electrodes are made safe by high value series resistors. The ionizer may be held by housing 9 bearing serrated faces 10, 11 in a fibre-glass stirrup 12 held in place by a ferrite magnet in base 13, the brush 3 and pad 6 being supported on rigid plastics arm 1 pivoted 8 on the ionizer housing 9.
Patent GB-1171168-A (GB)
Title: Trim Assemblies and Methods of Making Them
Inventor: ARTHUR JOHN
IPC: F16B5/12
Filed: 1966-11-24
Abstract: 1,171,168. Releasable fastenings. FORD MOTOR CO. Ltd. 24 Nov., 1966, No. 52566/66. Headings E2A and E2B. A method of securing a trim member 1 to a vehicle body member 3 e.g. a panel, comprises securing a metal strut 2 having a tapered head to the body member 3 without perforating the body member and snapping the trim member directly over the metal stud to mount the trim member directly on the metal stud. As shown the trim member is of shape with inturned end portions and the end portions engage the steel head. As described the steel is welded to the member 3.
Patent GB-526202-A (GB)
Abstract: 526,202. Toe-clips for cycle pedals. BEADLE J. H. March 10, 1939, No. 7784. [Class 136 (ii)] A strapless toe-clip for attachment to the front face or edge plate of a rat-trap pedal consists of a single strip of material the central part A of which has two or more slots B for the passage of attachment bolts, the sides or wings D of the strip being bent angularly forward and upturned to form lugs E for retaining the toe of the shoe without wedging. The toe-clip may be made of aluminium alloy &c. and may be partly or wholly encased in leather or fabric.
Patent GB-1436510-A (GB)
Title: Dc switching circuit for an electric motor
IPC: H02P7/29
Filed: 1974-12-05
Abstract: 1436510 Control of D.C. motors RANK XEROX Ltd 5 Dec 1974 52634/74 Heading H2J A motor M operable from a 200 volt D.C. supply is switched on and off by a three stage transistor amplifier comprising a first stage low voltage transistor Q2 to whose base is applied a square wave switching signal and which controls a second stage high voltage transistor Q4 connected via resistors across the 200 volts supply, the third stage consisting of two transistors Q5, Q8 connected for class B operation and having their common output connected through a resistor R15 to the base of transistor Q2, whereby positive feedback from the output to the input of the amplifier produces a rapid switching of the various transistors when the switching signal rises or falls to cause transistor Q8 to switch the motor on or off. Excessive heating and damage of the amplifier transistors is thus prevented, further protection being afforded by resistor R6 connected to negative potential and diode CR2 connected to earth, thus causing the transistor Q2 to be strongly biased off during "off" periods of the switching signal, and by "bootstrap" capacitor C2 which minimizes dissipation in transistor Q8. Diode CR9 prevents the output potential at transistor Q8 overshooting the 200 volt supply. Typical switching-on and switching-off actions of the amplifier are described. The motor M is connected to the output line from diode CR8 through an isolating capacitor C3 and drives a stylus assembly in a facsimile transmission system, a more general application being the driving of a load at a substantially uniform speed over an accurately defined distance.
Patent GB-1467459-A (GB)
Title: Glass ceramics and to the coating of metal articles with  glass-ceramic
IPC: C03C10/00
Filed: 1975-10-10
Abstract: 1467459 Glass-ceramic ENGLISH ELECTRIC CO Ltd and CANNON INDUSTRIES Ltd 10 Oct 1975 [5 Dec 1974] 52638/74 Heading C1M A glass-ceramic consists of, in per cent by weight: SiO 2  55-67, Al 2 O 3  4-10, Li 2 O 10-15, Na 2 O 0-4, K 2 O 1-6, B 2 O 3  0-12, ZnO 0-12, P 2 O 5  1-4, TiO 2  0-2, ZrO 2  0-6, one or more colouring oxide(s) 0-4, and one or more other divalent metal oxides 0-10. The colouring oxide(s) may be one or more oxides of Co, Ni, Mn, Cr and Fe, and the divalent metal oxide(s) may be one or more of CaO, SrO and BaO. A coating of the glass-ceramic on a metal (e.g. mild steel) may be formed by: forming a suspension in a liquid (e.g. water or a wateralcohol mixture) of the corresponding devitrifiable glass in powder form; applying the suspension to the metal; drying; and firing in a single stage to coalesce the glass particles and to devitrify the glass, the maximum firing temperature being below that at which the metal may deform (preferably in the range 800- 870‹ C.) and the maximum temperature being maintained until a continuous glass-ceramic layer is formed (e.g. up to 30 minutes). The glass particles may be such as to pass a 200 mesh B.S. sieve, and the firing may be in air or in an air-nitrogen mixture. One or more glass or glass-ceramic ground coats may be applied to the metal (e.g. a glass consisting of, in weight per cent: SiO 2 , 48À5, Al 2 O 3  6À4, Na 2 O 14À7, K 2 O 4À4, B 2 O 3  16À0, CaO 4À0, F 2  3À7, Co 3 O 4  0À6 and MnO 2  1À7). A plurality of glass-ceramic coating layers may be applied, each layer being fired before the next layer is applied, and the firing temperature of any layer not exceeding that of the first layer. The glass-ceramic coating preferably has an expansion coefficient in the range 80-120 Î 10<SP>-7</SP>/‹ C. (20-500‹ C.), so that the expansion mismatch with steel creates a compressive stress coating layer.
Patent GB-1537470-A (GB)
Title: Process for separating nickel cobalt and copper
IPC: C22B47/00
Filed: 1975-12-23
Abstract: 1537470 Separating Ni, Cr and Cu SUMITOMO METAL MINING CO Ltd and S NAKABE 23 Dec 1975 [23 Jan 1975] 52639/75 Heading C7D Nickel and/or cobalt are separated from copper by reacting with agitation a feed mixture comprising copper, nickel and/or cobalt as metals and/ or sulphides in the molten state with a reagent comprising carbonaceous material and optionally metallic iron or iron sulphide, the products of the reaction being a high carbon ferrous alloy and a matte. The high carbon ferrous alloy may be smelted with addition of a nickel matte to produce nickel while the matte may be smelted with addition of a copper matte to produce copper. The converter slag from both smelting operations may then be treated to produce cobalt.
Patent GB-1383095-A (GB)
Title: Automated audio health history acquisition system
IPC: G06F19/00
Filed: 1972-11-15
Abstract: 1383095 Selective signalling INTERNATIONAL HEALTH SYSTEMS Inc 15 Nov 1972 [17 Nov 1971] 52689/72 Heading G4H An automated health-history acquisition system presents recorded questions to the patient audibly. At a booth, the questions are supplied to headphones from a magnetic tape under control of a central computer (or the patient), codes identifying the questions being supplied to and stored in the computer from the tape. In response to each question, the patient presses one of 3 buttons to answer YES, NO or DON'T KNOW, the answer being stored in the computer together with the patient identity indicated from a card reader or thumb wheel switch in the booth. The question, answer and identity information stored in the computer is printed out. The patient's answers are indicated visually or audibly as they are given at the console. The questions may be displayed visually as well as presented audibly.
Patent GB-1394297-A (GB)
Title: Superconductors
IPC: H01L39/24
Filed: 1973-11-13
Abstract: 1394297 Super-conductors SIEMENS AG 13 Nov 1973 [20 Nov 1972] 52725/73 Addition to 1245239 Headings H1A A5 and A4D A super-conductor comprising a support having a surface layer of Nb 3 Sn containing from 0À4 to 1À1 wt. per cent of C according to the main Specification 1245339 is annealed for a period of from more than 1 minute up to 100 minutes at 500-1000C in an inert gas or in vacuo. The annealing step increases the critical current density of the super-conductor particularly for transverse magnetic fields parallel to the larger surface of the flat strip structure of the preferred arrangement. In a specific embodiment a support strip of Ni-Mo alloy is coated with Nb3Sn containing 0À83 wt. per cent C by decomposition of NbCl 4 , SnCl 2  and CO as in the main patent. The strip is then heated for 30 minutes at 800C in an atmosphere of pure argon, and then allowed to cool rapidly. The strip is especially suitable for winding into coils.
Patent GB-1382690-A (GB)
Title: Machine for continuous bonding of fabrics to thermoplastic material
IPC: A41H43/04
Filed: 1972-11-15
Abstract: 1382690 Laminating apparatus JAX PRODUCTS (ENG) Ltd 25 Oct 1973 [15 Nov 1972] 52748/72 Heading B5N A press for continuously bonding a textile layer 10 to a layer 11 of thermoplastic material or textile coated continuously or locally with thermoplastic material comprises a rotatable roller 14, a flat resilient pad 15, means, e.g. tensioned conveyers 12, 13, for feeding layers 11, 12 through the nip of 14, 15, and preheating means 23, 24. As shown, pad 15 is a bag containing pressurized air; alternatively it may be a spring-loaded plate. The roller 14 and lower belt 13 may be driven from a motor.
Patent GB-1412957-A (GB)
Title: Catoptric lens arrangement
IPC: G02B17/06
Filed: 1972-11-28
Abstract: 1412957 Catoptric lens RAYTHEON CO 28 Nov 1972 [1 Dec 1971 17 April 1972] 53587/74 Divided out of 1412954 Heading G2J [Also in Division H4]  The lens arrangement comprises an entrance reflective surface 90 generated by an arc of a quadratic conic section rotated about the lens axis so that every point on the arc describes a circle concentric with the lens axis and with a focus of the arc off the lens axis and describing a first focal circle, a secondary reflecting surface 95 generated by an arc of one branch of a hyperbola rotated about the lens axis so that the focus of the other branch of the hyperbola describes the first focal circle and the focus of the first mentioned branch describes a second focal circle and an axis reflecting surface 100 generated by an arc of a quadratic conic section rotated about the lens axis so that every point on the arc describes a circle concentric with the lens axis and with a focus of the arc of the lens axis and describing the second focal surface. The quadratic conic sections mentioned may include higher orders but exclude a circular arc.
Patent GB-1479579-A (GB)
Title: Truck
IPC: B60R19/32
Filed: 1974-09-11
Abstract: 1479579 Collision protection in road vehicles MITSUBISHI JIDOSHA KOGYO KK 11 Sept 1974 53662/76 Divided out of 1479051 Heading B7B In a collision, the truck bumpers 301, 302 act through a hydraulic system to move the load carrying part 1 of the truck relative to the truck frame 3. The arrangement results in the carrier 1 being decelerated more rapidly than the frame 3 so that the cab 2, which is fixed relative to the frame, suffers a reduced deceleration. As illustrated, if a forward collision occurs, bumper 301 acts through a gas space 305 and a piston 304 to force oil through an orifice 317 and past a reservoir 316 to increase the pressure in a cylinder space 312. Piston rod 315 is thus forced to the right and after first shearing plates 51 which connect the carrier and frame, moves the carrier rearwardly relative to the frame. Oil pressure to the right of piston 314 acts to compress gas in space 320, thereby absorbing more energy. There is mirror image operation if the rear bumper 302 is hit. In a modification, Fig. 3 (not shown), the air spaces 305 and 320 are omitted together with the pistons 304 and 319, and their effect is achieved by perforating and spring loading the remaining pistons. In another embodiment, Figs. 4-6 (not shown), a hydraulic piston and cylinder unit normally acts to tip the carrier of a dump truck. However, a hydraulic system similar to that illustrated in Fig. 2 causes the piston and cylinder unit to move the carrier relative to the frame in the event of a sufficient impact on one of the bumpers.
Patent GB-1204600-A (GB)
Title: Thermoplastic composition containing an insecticide
Inventor: BEHRENZ WOLFGANG
IPC: C08K5/521
Filed: 1968-11-13
Abstract: 1,204,600. Thermoplastic insecticidal composition. FARBENFABRIKEN BAYER A.G. 13 Nov., 1968 [13 Dec., 1967], No. 53747/68. Heading A5E. A thermoplastic composition having controlled release insecticidal properties comprises a cellulose acetate having an acetic acid content of from 50 to 60%, from 10 to 40% of the composition of a phthalic acid alkyl ester plasticizer and from 10 to 35% of the composition of di-methyl-2, 2-dichlorovinylphosphate. Carbodiimide may be included as stabilizer for the cellulose acetate. The composition may be formed into foils, ribbons and strips.
Patent GB-1156027-A (GB)
Title: Quaternary Ammonium Compounds
IPC: A61K8/41
Filed: 1966-12-01
Abstract: 1,156,027. Germicidal compositions. UNILEVER Ltd. 1 Dec., 1966 [2 Dec., 1965], No. 53767/66. Headings A5B and A5E. [Also in Division C2] Germicidal compositions comprise 1 to 5000 ppm of a quaternary ammonium halide of the formula: where R<SP>1</SP> and R<SP>2</SP>, which may be the same or different, each represents a C 1-3  alkyl group, or a C 2-3  hydroxyalkyl group, R<SP>3</SP> is a C 6-18  alkyl group, X is H or halogen, and Y is a halide ion, together with a physiologically acceptable diluent in liquid, pasty or powdery forms. Typical applications are mouth-wash concentrates, toothpastes, denture cleaning agents and aqueous concentrates for cleaning food processing machinery.
Patent GB-1079900-A (GB)
Title: Cyclobutanone compounds
Filed: 1965-12-21
Abstract: Cellulose acetate butyrate is plasticized with compounds of formula <FORM:1079900/C3/1> wherein R and R1 are H or alkyl, R2 is C1- 4 alkyl or a benzene nucleus, R3, R4, R5, R6 and R7 are H or C1- 4 alkyl and RR1C may otherwise be cyclopentylidene or cyclohexylidene. In an example, the compound where R=Et, R1=Bu, R2=Me and R3 ... R7=H, is used.ALSO:The invention comprises compounds of formula <FORM:1079900/C2/1> wherein R and R1 are H or alkyl, R2 is C1- 4 alkyl or a benzene nucleus, R3, R4, R6 and R7 ar H or C1- 4 alkyl and RR1C may otherwise be cyclopentylidene or cyclohexylidene; and a method of making them by reacting RR1C = C = O with R2O-CR3 = CR4-CR5 = CR6R7. Details are given of the preparation of compounds where R = R1 = Me, or R = Et and R1 = Bu, Bu, R2 being Me and R3 . . . R7 being H, but a large number of other specific compounds of the above formula are also mentioned.
Patent GB-542297-A (GB)
Abstract: 542,297. Printing-machines. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., and ROBINSON, M. H. Oct. 29, 1940, No. 15811. [Classes 100 (i) and 100 (ii)] A ticket forming and printing machine is constructed so as to print both sides of the ticket by means of one printing-roller 59, which, as shown, is fitted with printing surfaces 62, 65'and with numbering devices 60, 61 and dating-devices 63, 64, and the cylinder 59 co-operates with two impression rollers 84, 85. The machine may print upon cut tickets, or may be joined with a cutting-devices 6 17 for severing the tickets from a web 8 fed forwards intermittently by a rotating segment 7 and a co-operating feed roller 9 on the shaft of which are cams 13, 14 for operating the lever 18 which actuates the cutter, and a lever 23 which operates a stop 30 for engaging the forward edge of the cut strip as this passes through a guide 29. A feeler device 31 has to be engaged by the strip before a one-revolution clutch can be operated to drive the shaft 2, and it is necessary also to operate a hand or coin-controlled lever also before the drive can take place. After one side of the cut ticket is printed upon, it is fed by a feed roller 55, which is brought into contact with the impression roller 84, and it is finally held by a stop 43 in a guide 42 and then its motion is reversed by a feed segment 36 and roller 37, and is directed by an oscillating guide 50 to the second impression roller 85 which prints on the reverse side of the ticket. The printing-roller is inked by a roller 74 supplied by a roller 79, wick 78, and reservoir 77 as in Specification 528,313.
Patent GB-1349265-A (GB)
Title: Motor control circuits
IPC: G05D3/18
Filed: 1971-11-23
Abstract: 1349265 Electric correspondence control systems PENN CONTROLS Inc 23 Nov 1971 [15 Jan 1971] 54371/71 Headings G1N and G1U [Also in Division G3] In an automatically balanced potentiometric system comprising transmitter potentiometer R22 Figs. 2 and 3 and receiver potentiometer R1, the potentials at the sliders 36, 41 respectively are compared in a differential amplifier 47 to switch on circuit 48 or 49 according to the polarity of the potential difference, thereby energizing field winding 21 or 22 and A.C. motor 23, which restores balance, and is characterised in that the field windings produce bias voltages which augment the input to the differential amplifier and eliminate hunting of the motor. At balance, transistors Q1, Q4 are conducting and Q2, Q5 are blocked. When the slider potential difference exceeds a threshold value in one direction, Q2 is opened, firing rectifiers SCR2, SCR3 and connecting field winding 21 to A. C. supply terminals 58, 59, and field winding 22 in series with capacitor C3 is also connected to the A.C. supply. The A.C. voltages across windings 21, 22 are fed back via resistors R9, R16 respectively to transistors Q1, Q4. Winding 22 and capacitor C3 form a resonant circuit so that the voltage across winding 22 is higher than that across winding 21, and the feedback voltage to transistor Q4 is therefore greater than the feedback voltage to transistor Q1, thereby increasing the input voltage to differential amplifier 47. When the motor 23 has driven the slider 41 of potentiometer R1 to make its potential equal to that at slider 36 of potentiometer R22, SCR2, SCR3 are extinguished and the motor stops without hunting. The circuit may form part of an automatic system for controlling temperature.
Patent GB-1320472-A (GB)
Title: Radiography
IPC: G21K1/10
Filed: 1971-11-24
Abstract: 1320472 Radiographic films FRANCE ARMED FORCES MINISTER OF 24 Nov 1971 [8 Dec 1970] 54684/71 Heading H5R An intensifying screen for use in contact with the front surface of the film in radiography is formed of nickel, zinc, or copper, or of an alloy of any of these metals-e.g. brass-which contains not more than 4% of any other element or elements; in the case of a copper screen, the use of which is stated to be known, the surface facing the film is coated with a thin metal layer, e.g. mercury or lead, and the use of such a layer is also desirable with screens formed of the other materials, the layer in any event not exceeding in thickness one quarter that of the main screen, which latter should not exceed 1 mm. A supplementary filter of a heavy metal having an atomic number in the range 74 to 82, or an alloy of these metals, and having a thickness of less than 1 mm., may be arranged in front of the screen, either in contact therewith, or spaced therefrom -e.g. outside the cassette- and the film may be provided with the normal lead intensifying screen at its rear surface. The screen is intended for use particularly when radiation of an energy greater than 1 Mev is employed.
Patent GB-1223766-A (GB)
Title: Improvements in or relating to steel strapping
IPC: C21D1/18
Filed: 1968-11-19
Abstract: 1,223,766. Heat-treating steel strip. HOESCH A. G. Nov. 19, 1968 [Nov. 23, 1967], No. 54887/68. Heading C7A. Heavy-duty steel strapping having a tensile strength of 95 - 125 kp/mm, elongation of 10 - 17% and an elastic limit ratio of 0À7 - 0.9 is produced from strip of thickness 0.3 - 1.3 mm and composition C 0.1 - 0.2% by weight Mn 0.3 - 1 Si - 0.5 S, P - 0.06 each Fe balance which is austenitized continuously at a temperature of more than 820 C. and quenched in water, or between cooled plates or rollers. The strip may be maintained under tension during quenching to ensure flatness; where necessary it may be quenched to give a strength greater than that required, and subsequently annealed during a drying process. Austenitizing may be effected by radiation, induction or resistance heating, and a protective atmosphere is preferably used.
Patent GB-1329196-A (GB)
Title: Pressure sensitive adhesive composition
IPC: C09J193/00
Filed: 1971-11-26
Abstract: 1329196 Pressure sensitive adhesives TOYO SODA MFG CO Ltd 26 Nov 1971 [28 Nov 1970] 55096/71 Heading C3P Pressure sensitive adhesives comprise by weight (1) 30 to 70% of an ethylene/vinyl acetate copolymer having a melt index of 40 to 700 and containing 20 to 70 weight per cent of vinyl acetate, and 70 to 30% of a mixture of (2) a miscible tackifier and (3) a miscible viscosity lowering and pressure sensitizing agent. Specified tackifiers are wood rosin, gum rosin, lard rosin, polymerized rosin, rosin esters, e.g. with glycerol or pentaerythritol, hydrogenated rosin, chlorinated terphenyl, terpene resin or fusible phenolic resin. The viscosity reducing agent may be a xylene/formaldehyde or coumarone/ indene resin, which may be replaced in part by an adhesive strengthening agent such as an aliphatic, alicyclic or aromatic hydrocarbon, chloroprene or coumarone resin. The compositions may also contain plasticizers, e.g. dioctyl adipate, dioctyl sebacate, dioctyl, diethyl or diisodecyl phthalate, tributyl or triphenyl phosphate or dibutyl maleate; and fillers, e.g. silica, silicates, calcium carbonate or sulphate or #- glucoside powder. Examples describe compositions comprising ethylene/vinyl acetate copolymers, hydrogenated ester gum and (1, 3, 4 and 8) xylene/formaldehyde resin, (2) xylene/ formaldehyde resin and liquid polychloroprene, (5) coumarone/indene resin, (6) xylene/formaldehyde resin and coumarone/indene resin and (9) coumarone/indene resin and polybutene; and comprising (7) ethylene/vinyl acetate copolymer, wood rosin and coumarone/indene resin.
Patent GB-1241189-A (GB)
Title: Improvements relating to pantographs for electrically powered vehicles
Inventor: TUSTIN ARNOLD
IPC: B60L5/22
Filed: 1968-11-12
Abstract: 1,241,189. Pantographs. BRITISH RAILWAYS BOARD. 11 Nov., 1969 [12 Nov., 1968], No. 55200/69. Divided out of 1,241,188. Heading B7L. A pantograph comprises a head adapted to be mounted on a rail vehicle by means of spring rods 41, 42 whose flexibility increases progressively from the point of attachment to the vehicle to the point of attachment to the head. The rods 41, 42 may be formed from a single length of tube which is increasingly flattened to form the flexible rods, but which is undeformed where it forms a torsion tube crossmember 43. In a modification, Fig. 2, the head is supported by tapered rods 27-32 arranged in pairs and in two planes, the head being connected to the member 35. The lower pair of rods 31, 32 may be omitted, and then the upper two pairs connected by a torsion tube. The head may comprise two metal contact strips 20, 21 spaced apart longitudinally of a contact wire by connectors 23a-23d, and cantilevered to the torsion tube about an axis 24 by rod or leaf springs 44. The contact strips are thicker in their middle portions and are provided with widthwise slits 45 according to flexibility.