baber/WOPTO huggingface dataset:
Patent GB-852549-A (GB)
Title: Improvements in and relating to electric lamps
IPC: F21V7/04
Filed: 1958-03-07
Abstract: 852,549. Aircraft lamps. HARLEY, M. C. Feb. 6, 1959 [March 7, 1958], No. 7365/58. Class 75(2). A landing lamp mounted in a helicopter or other vertical take-off aircraft comprises a light source e disposed in front of a reflector having a central parabolic portion a merging at b into an outer part c, the curvature of which is progressively greater towards the outer edge, so that the central portion forms a powerful parallel light beam and the outer part a wide spread non-parallel beam. The Provisional Specification describes the use of a lamp bulb with two planets e.g. as in Specification 560, 152, one or both of which may be used.
Patent GB-736246-A (GB)
Title: Process and device for measuring the amplitude of vibration of a watch regulating device
IPC: G04D7/12
Filed: 1953-03-17
Abstract: 736,246. Testing watches. BULOVA WATCH CO., Inc. March 17, 1953 [May 19, 1952], No. 7391/53. Class 139. [Also in Group XXXVIII] A device for measuring the amplitude of vibration in a watch regulating device comprises means for obtaining a voltage proportional to the time between two beats of the escapement, said beats occurring as the balance swings in one direction, and means for indicating the difference between said voltage and a fixed voltage. The microphone 2, Fig. 1, picks up the three ticks of the escapement of a watch 1 occurring during one swing of the balance. The time between the first and third tick is inversely proportional to the amplitude of oscillation of the balance. The impulses 3 from the microphone are amplified at 4 and the first impulse is used to start impulses from a generator 5 which impulses pass through a sawtooth stage 8 and emerge in sawtooth form 9. Another version of the impulses from the amplifier 4 passes through the rectifier 6, the differentiating device 11 and the amplifier and limiter 13 to emerge in the form 14. The impulses 9 and 14 are fed into a testing device 15, 16, 17, Fig. 4, comprising a transformer 26, 27, 28 into the primary of which the impulses 14 are fed. The impulses 9 are fed to the point 38 between the double diodes 30, 31. The arrangement is such that on arrival of the first impulse 14 the condenser 36 is discharged and thereafter the condenser 36 is charged with the instantaneous voltage of the impulse 9 when the third impulse 14 arrives. This voltage is proportionately transmitted via the triode 37, the diode 41 to the condenser 42. The voltage at the cathode of the triode 44 is proportional to the voltage of the sawtooth impulse 9 at the moment of arrival of the third impulse. The instrument 18 measures the difference between the constant potential of the point 19 and the potential of the cathode of the triode 44 and so indicates the amplitude of the balance oscillation.
Patent GB-609259-A (GB)
Title: Folding wringer stand
IPC: D06F45/14
Filed: 1946-03-09
Abstract: 609,259. Wringers. BEUKERS, W. H., and FLEETWAY MANUFACTURING CO., Ltd. March 9, 1946, No. 7408. [Class 138(ii)] [Also in Group XIV] The pivoted frames of a folding wringer stand are held in the position of use by toggle links A, B at each side, a projection D on one link engaging the other link to limit the movement. Bars E, E<1> connect the links pivoted to one frame to form a handle for folding and a shelf.
Patent GB-1493063-A (GB)
Title: Continuous casting
IPC: B22D11/126
Filed: 1975-02-21
Abstract: 1493063 Cutting by fusion; continuous casting DEMAG AG 21 Feb 1975 [23 Feb 1974 23 Jan 1975] 7422/75 Headings B3V and B3F [Also in Division B8] In a method of cutting a continuously cast metal strand 1 by a cutting torch 19 movable with the strand 1, strand support elements 3, 3a, 3b, 2 are moved,'e.g. pivoted into an inoperative position 3a<SP>1</SP>, 3b<SP>1</SP>, 2<SP>1</SP> as the torch 19 approaches their normal positions and returned to their normal positions when the torch 19 has travelled past, each support element passing through the cone of slag generated by the torch during one of its movements. As described, the strand 1 is supported by rollers 3, 3a, 3b, 2 which are driven by motors (32) (Fig. 5, not shown) and which are pivotable rearwardly or forwardly by rams 9-12. The rollers may be moved to and from their inoperative positions at the same or different speeds. A trolley 15 transversely movable on rails 16 is provided for collecting scrap ends of the strand 1.
Patent GB-681150-A (GB)
Title: Improvements in or relating to electro-magnetic lenses
Inventor: ALLARD EDWIN
IPC: H01J37/141
Filed: 1949-03-18
Abstract: 681,150. Electron lenses. PLESSEY CO., Ltd. March 16, 1950 [March 18, 1949], No. 7457/49. Class 39(i) In an electromagnetic lens the holder 5, 6, Fig. 2, rests on a spacing ring 1 inside a pole piece assembly and is fitted with a beam defining unit 7, 8, and rods 29 pass through radial sealed apertures in a winding yoke, the inner ends of the rods engaging the holder 5, 6, so that it may be adjusted in position externally of the vacuum chamber. The platinum disc 8 is mounted against a flange 7a, Fig. 4, in a short tube 7 and retained therein by a spring clip 35, and the tube 7 is a sliding fit in tube 6 attached to a five armed spider 5. Two mutually perpendicular adjusting rods 29, one of which is shown in Fig. 2, contact the spider 5 through their extensions 30. The rods 29 are threaded and engage threaded bushes 27, the vacuum being maintained by flexible washer 26 and gland 28. On turning control knob 31 the spider 5 is moved transversely against the tension of spring 10 which is connected between the spider 5 and the non-magnetic spacing ring 1, and the inward movement of rod 29 is limited by shoulder 32 which abuts against the yoke spacer 21. Sealing means between the two yoke portions 16, 17 and the spacer 21 comprises annular V- sectioned projections on the yoke portions which engage flexible rings 24 in recesses 22 in the spacer. The pole pieces 11, 12 are spaced and located by non-magnetic ring 1 which also has ledge 4 to support the spider 5. The yoke assembly is held together by nuts and bolts 25. There may be one or more windings 15. The apertured disc 8 may be adjusted axially by sliding the tube 7 within the tube 6, but to do this it is necessary first to break the vacuum and to remove the pole piece assembly. The Provisional Specification states in addition that the lens arrangement is used in an electron microscope, the apertured disc defining the objective aperture. The windings may be divided and the adjusting rods disposed between the parts. The spider may be replaced by a disc. The spring may be connected to the rods instead of to the holder. The two adjusting rods may have reduced spherical ends engaging separate limbs of the spider. One rod engages with a recess in the end of one limb and the other rod slides on a flat surface of the other limb. The yoke spacer is stated to be of non-magnetic material.
Patent GB-584799-A (GB)
Title: Improvements relating to compositions for forming refractory structures
IPC: C04B33/13
Filed: 1944-04-24
Abstract: A refractory composition comprises a major quantity of zirconium dioxide which may contain up to 5 per cent. of other refractory materials with melting points above 2000 DEG F., and a water dispersible colloid, e.g., starch, dextrin, albumins, agar agar, gums, vegetable extracts &c. and a water soluble base forming a monohydroxyl base with water, e.g., alkali metal hydroxides, alkyl amines, oxonium compounds and piperidine both ranging from .002-.5 per cent. by weight of zirconium dioxide. Compositions are made for slip casting or jiggering by adding water, e.g., 8-17 per cent. of the zirconium dioxide and these are cast in plaster moulds, dried and fired.  According to examples finely ground electrically fused zirconium dioxide is mixed with sodium hydroxide, tetramethyl ammonium hydroxide or piperidine, tannin, dextrine or corn starch and water Specifications 544,628 and 578,409 are referred to.
Patent GB-594457-A (GB)
Title: Improvements in or relating to the processing of synthetic rubber latices
IPC: C08C3/00
Filed: 1944-04-24
Abstract: Wet coagula from latices of polymerized or interpolymerized butadiene are processed by subjecting them to compacting pressure to express moisture and then simultaneously or subsequently dividing the compacted coagulum into small units, such as strips and pellets.  The synthetic rubbers may be those obtained by copolymerizing 60 parts of butadiene with about 40 parts of acrylonitrile in the presence of an aliphatic mercaptan containing more than 6 carbon atoms or 75 parts of butadiene with 25 parts of styrene in the presence of oleic acid.
Patent GB-619769-A (GB)
Title: Improvements in and relating to apparatus for producing glass fibers
IPC: C03B37/09
Filed: 1946-03-12
Abstract: 619,769. Glass fibres. GLASS FIBERS, Inc. March 12, 1946, No. 7749. Convention date, Nov. 15, 1945. Addition to 610,564. [Class 56] In the apparatus according to the parent Specification there are provided refining or purifying means for eliminating air bubbles and other impurities from the molten material immediately before it enters the heating chamber proper. In the form shown these means comprise two concentrically arranged conical members 186, 188 arranged above a partition 181 at the top of the heating chamber 185, the molten glass overflowing from the member 188 into the member 186 and from thence overflowing and passing through openings 183 in depressions 182 in the partition. In another form the two conical members are replaced by a single cup-shaped member and the partition 181 is omitted.
Patent GB-1194712-A (GB)
Title: Improvements in or relating to Apparatus for Setting the Hair
Inventor: POPEIL SAMUEL JOSEPH
IPC: A45D6/14
Filed: 1968-02-16
Abstract: 1,194,712. Hair roller. S. J. POPEIL. 16 Feb., 1968 [26 Dec., 1967], No. 7760/68. Addition to 1,194,711. Heading A4V. A hair roller for setting hair has a generally cylindrical body 18 made of a mixture of poly-propylene and talcum powder which has heat retention characteristics such as to permit the body to retain a temperature between 150F. and 190F, for two minutes at room temperature and which has the property of resisting distortion at sustained temperatures of at least 212F., the body having an uninterrupted, hollow, tightly closed interior with a plurality of spines 16 integral with the body and extending outwardly therefrom. The hair rollers are preferably made from polypropylene containing 40-50% by weight talcum powder. For use the hair roller is heated in a steam chest or in boiling water to 212F. and is then placed in the hair and held in place with a clip.
Patent GB-979430-A (GB)
Title: Louvered screen and method of making the same
IPC: E06B7/08
Filed: 1961-03-03
Abstract: 979,430. Laminates. J. F. STEEL. March 3, 1961, No. 7794/61. Heading B5N. [Also in Division E1] A plastic sheet having louvre elements embedded therein is formed from a plurality of butyrate or butycite (cellulose acetate butyrate) plastic sheets 10, each having thereon opaque reflective parallel strips 12, the sheets being stacked one on the other with corresponding strips disposed in a respective plane at a specified angle to the surface of the sheets and bonded together by heat and pressure to embed the strips in the sheet mass. Such a sheet mass may be placed between two sheets of glass and bonded thereto to provide a glazing panel that can be cut to size.
Patent GB-1244110-A (GB)
Title: A filter cigarette with ventilation openings
IPC: A24D3/04
Filed: 1969-02-13
Abstract: 1,244,110. Cigarettes. B.A.T. CIGARETTEN-FABRIEKEN G.m.b.H. 13 Feb., 1969 [28 Feb., 1968], No. 7803/69. Heading A2C. An adjustable sleeve 3 for controlling ventilation openings 4 in a cigarette filter 1 is slidable freely over the mouthpiece end of the filter but is a tighter fit over the region where the filter and tobacco section coverings overlap so as to be retained in an adjusted position. The sleeve may be of paper or synthetic material and of different colour from the covering of the filter. Instead of the slit-shaped openings shown, small holes may be provided arranged either in distinct rings around the filter, so that they serve also as graduations, or in a random or spiral manner, or a porous region may be provided. Alternatively, the filter may have one or more layer apertures controlled by a rotary component of movement of an apertured sleeve. cigarettes produced in symmetrical pairs joined at their filter ends may, before severing, be wrapped with a strip of material to form the sleeves 3.
Patent GB-882004-A (GB)
Title: Automatic breaking of arc in arc welding
IPC: B23K9/14
Filed: 1960-03-07
Abstract: 882,004. Control systems for welding arcs. BRATISLAVSKE ELEKTROTECHNICKE ZAVODY, NARODNY PODNIK. March 7, 1960 [March 6, 1959], No. 7905/60. Class 38 (4). [Also in Group XXII] A welding arc between a stationary electrode 4 and a workpiece 5 on which it lies is extinguished at a predetermined point by a control circuit which is energized when the arc reaches a conductor 3, held against the electrode at the required point, but insulated from it. The arc completes a circuit from the workpiece 5 through a relay 8 which de-energizes a contactor 7, thus interrupting the welding current at 9. Manual stop and start buttons are also provided.
Patent GB-1031226-A (GB)
Title: Improvements in and relating to non-return valves
Inventor: TREMEAU JEAN
IPC: F16K15/02
Filed: 1963-02-27
Abstract: 1,031,226. Valves. SOC. DES. CLAPETS T.J. Feb. 27, 1963, No. 7923/63. Heading F2V. A non-return valve with or without a closing spring 15 consists of a closure member 9 with a sealing ring 11 and flexible, depending guides 12 slidable in a bore 5 and formed with claws 13 which limit the opening movement and provide abutments for the spring. The closure member, which is shaped to facilitate flow past the seat 6, may be of moulded synthetic resin and its density, which may be made to approach that of the controlled fluid and chosen to suit a vertical, horizontal or inclined position for the valve, may be determined by the filling of a recess with a light or a heavy material.
Patent GB-145169-A (GB)
Title: Method of and apparatus for the transmission of sound waves by means of light and like radiant energy
IPC: H04B10/11
Filed: 1919-03-31
Abstract: 145,169. Case, T. W. March 31, 1919. Light-sensitive cells. - Fig. 5 shows a form of construction of a light sensitive cell used in a photophonic system of transmitting sound to a distance. Spaced terminals or conductors 42, 43 of suitable material such as gold leaf are spread on a sheet of light-reactive material such as a compound of thallium and sulphur or a slightly oxidised compound of the same.
Patent GB-374893-A (GB)
Title: Manufacture of new products from menthols
IPC: C07C35/12
Filed: 1931-03-17
Abstract: Addition compounds of menthol and its stereoisomers with orthophosphoric acid are obtained when the two components are brought into contact.  The menthol and acid, preferably in the molecular proportions of 2 : 1, may be mixed at ordinary temperature in the presence or absence of an indifferent solvent such as a liquid hydrocarbon, or the acid is added to the menthol in liquid or molten condition.  An aqueous solution of phosphoric acid may be employed and the water removed from the reaction mixture as far as possible, e.g. by adding an organic solvent which is immiscible with water or whose distillation carries the water away.  The menthol and its stereoisomers, e.g. isomenthol and neomenthol, may be in the optically active or inactive form, and mixtures may be employed such as the products obtained by the hydrogenation of thymol, menthone and piperitone, or prepared by isomerization of the said hydrogenation products as described, for example, in Specifications 213,991 and 238,314, [both in Class 2 (iii), Dyes &c.].  The addition compounds are in general white crystalline bodies, which are decomposed into their components by heating alone or with water or caustic alkali solutions.  Examples are given of the preparation of the orthophosphoric acid compounds of (1) racemic menthol and laevo-menthol using petroleum ether as a solvent, and (2) racemic neomenthol and racemic isomenthol, the menthol being employed in the molten state.
Patent GB-609718-A (GB)
Title: Arrangements for the heating of metallic work-pieces by electromagnetic induction
IPC: H05B6/02
Filed: 1945-04-03
Abstract: 609,718. Heating by electromagnetic induction. AKT.-GES. BROWN, BOVERI, & CIE. April 3, 1945, No. 8241. Convention date, April 1, 1944. [Class 39(iii)] A metal work piece 1 is heated by eddy currents induced by the rotation of magnetic poles 2 over the surface of the work piece. The pole structure with its energizing winding 16 is driven by an electric motor 8. Various arrangements are described for heating plates, and rod or tubular work pieces in which the magnetic poles are rotated. Fig. 4 shows an arrangement in which a rod 53 is heated by the rotation of pole structures 58, 59, by a motor 8 and an open belt 60 and a crossed belt 61.
Patent GB-115923-A (GB)
Title: Improvements in or relating to Ventilators.
Inventor: GREEN DANIEL JOSEPH
IPC: B63J2/10
Filed: 1917-06-09
Abstract: 115,923. Green, D. J. June 9, 1917. Ventilating-shaft tops.-An outlet ventilator for use on; ships &c. consists of a dome c, Fig. 1, covering the end of the shaft and formed with openings d, c in its sides. It rests on a flanged ring b. which prevents the entry of water. Within the dome is a deflector f, which may be lowered over the mouth of the shaft or supported in a raised position by a pin n. Such an outlet ventilator is preferably used in connexion with an inlet ventilator having a hood v, Fig. 3, adapted to be turned in the direction of the wind, an extension of the inlet shaft reaching to the top of the hood, so as to prevent the entry of water.
Patent GB-540078-A (GB)
Title: Improvements in or relating to the hardening and tempering of projectiles
IPC: C21D9/16
Filed: 1939-12-30
Abstract: 540,078. Heat treating projectiles. BRIDGES, W., and CHAMBERS, A. J. Dec. 30, 1939, No. 8383/41. Divided out of 538,636. [Class 51 (ii)] Projectiles are preheated prior to the hardening and tempering process by subjecting them to an atmosphere of hot air or inert gas which may be heated electrically. The projectiles are subjected to preheating in supporting devices as described in Specification 538,636.
Patent GB-635674-A (GB)
Title: Improvements in or relating to wheatstone bridge resistance measuring circuits
IPC: G01R17/10
Filed: 1948-03-23
Abstract: 635,674. Resistances measuring. MARCONI INSTRUMENTS, Ltd., and BROCKELSBY, C. F. March 23, 1948, No. 8556. [Class 37] A circuit for measuring resistance comprises a bridge comprising resistances R1, R2, R3 and the anode-cathode path and cathode resistance R4, P of a valve, the resistance P being tapped at S to a resistance R5 connected to the grid of valve V and the unknown resistance X being connected between a point of constant potential and a tap SW on resistance R5. In operation, the bridge is balanced in the absence of X by setting S to the cathode end of P and varying R4; X is then put in circuit and the taps SW (coarse) and P (fine) adjusted to restore balance, the value of X corresponding to the settings of SW and P. An adjustable potential source may replace R4. A protective resistance may be connected to X2 to prevent X1, X2 being short-circuited. Resistances P, R5 may be calibrated in logarithmic units. The resistance X may be a specimen whose resistance varies with moisture so that the circuit acts as a moisture meter. Resistance R2 may be connected to the cathode instead of to P, or a resistance may be connected between the cathode and a positive point on source B.
Patent GB-511985-A (GB)
Title: Improvements in or relating to figures adapted to represent the human body
IPC: G09B23/32
Filed: 1938-03-21
Abstract: 511,985. Models. BERGER BROS. CO., and STEVENS, A. H. March 21, 1938, No. 8643. Addition to 484,497. [Class 146 (ii)] A model of the human figure for indicating different postures comprises a support 10 to which is pivoted a number of flat relativelymovable sections 11, 13, 14, 17, 18, an actuating member 32 having independent connections to some of the sections being provided. The section 14 is secured to the support by eyelets 15, 16 to which are pivoted the sections 13, 17; the section 11 is attached to the section 13 by an eyelet 12 movable in a slot 21 in the section 13, and its movement is restricted by an eyelet movable in a slot in the support; the section 18 is pivoted on an eyelet 19 movable in slots 22 in the support and section 14; and the section 18 is pivoted to a section representing the lower leg by an eyelet movable in a slot in the support. The actuating- member 32 is pivoted at the back of the support on an eyelet 28 and is formed with a slot engaging the eyelet 12, the arrangement being such that there is a lost-motion connection. The lever is formed with a slot in which is movable an eyelet 29 on a second lever 27 which is pivoted on the eyelet 16 and also carries the eyelet 19. By moving the lever 32 to positions indicated by marks on the support, the sections of the figure can be caused to assume positions corresponding to the erect, fatigue, and lordosis positions of the body.
Patent GB-892741-A (GB)
Title: Improvements in or relating to ignitory compositions
Inventor: PEYTON STANLEY VICTOR
IPC: C06B41/02
Filed: 1958-03-18
Abstract: 892,741. Explosives. AVIATION, MINISTER OF. March 4, 1959 [March 18, 1958], No. 8730/58. Class 9(2). An igniting composition for a detonator or like device comprises a mixture of lead 2:4 dinitroresorcinate, barium nitrate and tetrazene, the content of the lead compound being between 45 and 55% by weight. Between 3 and 7% of tetrazene may be present. The mixture is also suitable for use as a small arms cap composition.
Patent GB-1066892-A (GB)
Title: Fortified mosquito repellent smoke coil
Inventor: SONBERT JACK
IPC: A01N25/20
Filed: 1966-02-28
Abstract: An insecticidal body in the form of a smoke coil comprises ignitable material, pyrethrum marc in an amount of at least 25% by weight of said body, said body having distributed therethrough from 0.05% to 0.50% by weight of the body of dimethyl dichlorovinyl phosphate.  The invention also comprises a method of fortifying an ignitable body comprising at least 25% by wt. of pyrethrum marc which comprises impregnating the body with a solution of dimethyl dichlorovinyl phosphate in a volatile organic solvent and drying the impregnated body.