baber/WOPTO huggingface dataset:
Patent GB-727515-A (GB)
Title: Improvements in or relating to dental apparatus
IPC: A61C1/00
Filed: 1952-12-04
Abstract: 727,515. Control of A.C. motors. AKTIEBOLAGET ELEMA. Dec. 4, 1952 [Dec. 4, 1951], No. 30790/52. Class 38 (3) [Also in Group VI] A device for stopping or reducing the speed of rotation of motor-driven dental apparatus under the control of the dentist and/or the patient, comprises an electronic amplifier or oscillation generator or a sensitive relay having an input.or control circuit arranged to include at least a part of the body of the dentist and/or the patient so that a change in the position of the dentist's or patient's body can influence the amplifier, oscillation generator or relay to stop or reduce the speed of rotation of the apparatus. The control circuit comprises a conductor 5 connected with an electrode on a handpiece 8 of the dental engine and the input of an amplifier 4, the amplifier input circuit, a conductor 3 connected with a grid of a valve in the amplifier 4 and an electrode 2 in the arm of a dental chair 1, the control circuit being closed when the patient and the dentist are in contact with one another and their corresponding electrodes. The amplifier 4 is provided with alternating current and a winding 14 of a relay is connected across the output of the amplifier 4. The relay contact 13 and a foot switch 12 are arranged in the main supply circuit to the electric motor 11. The motor is started when the control circuit is completed. In the event of the patient and/or the dentist wishing to stop or slow down the electric motor 11, contact between them or their respective electrodes is broken which reduces the output of the amplifier 4 and breaks the motor circuit at the relay contact 13. If desired, the electrode 2 and the patient may be shunted out of the control circuit by a switch 16 in a conductor 15 connected between the conductor 3 and the link system 6 connecting the electric motor 11 with the handpiece 8.
Patent GB-1520872-A (GB)
Title: Electromagnetic waveguides
IPC: H01P11/00
Filed: 1974-07-11
Abstract: 1520872 Electro-forming waveguides BICC Ltd 10 July 1975 [11 July 1974] 30798/74 Heading C7B [Also in Division H1] In a waveguide comprising an electro-formed, circumferentially continuous copper-layer supported by a surrounding reinforcing wall, electroforming is effected on a mandrel having a substantially uniform cross-section over that portion upon which Cu is deposited, using a bath at 27 - 32‹C containing distilled water, CuSO 4  and H 2 SO 4  at a c.d. of 1000-2000 A/M<SP>2</SP> to produce a deposit having an internal circumferential tensile strength. The mandrel may be horizontally rotated, the bath agitated (e.g. by air injection), and a plurality of vertical elongate anodes provided on opposite sides of the mandrel. The anodes may be evenly spaced in the centre region of the anode, with progressively increased spacing towards the ends, and the spacing at the extreme ends being reduced, whereby an electro-deposit of even thickness, but thicker at the ends, is produced. An outer Ni layer may be plated.
Patent GB-618075-A (GB)
Title: Improvements in or relating to means for cleansing the hands
IPC: A61Q19/10
Filed: 1946-10-16
Abstract: Means for cleaning the hands from grease in the absence of washing facilities comprises fibrous textile material such as cotton wool, cotton waste, wool waste or the like impregnated with an aqueous cleansing solution containing substantially equal quantities of turpentine to serve as a grease solvent and of castor oil or other oil adapted to act as a skin emollient together with a wetting agent. Disinfectants, perfumes and detergents such as alkali or an abrasive powder may be added.  In examples, the impregnating solutions may comprise (1) 50 per cent water, 23 per cent turpentine, 20 per cent 75 per cent sulphonated castor oil, and small quantities of sodium lauryl sulphate, pine needle oil, ammonia, lanoline and fluorescein; (2) 30 per cent water, 25 per cent 75 per cent sulphonated castor oil, 21 per cent turpentine, 14 per cent "Teepol" (Registered Trade Mark) and small quantities of bornyl acetate, triethanolamine, terpinolene and p-chlor meta cresol.  The material may be packed in an air-tight tin box.
Patent GB-1069806-A (GB)
Title: Photographic film unit
IPC: G03B17/34
Filed: 1964-08-04
Abstract: 1,069,806. Photographic film units. INTERNATIONAL POLAROID CORPORATION. Aug. 4, 1964 [July 25, 1963], No. 30933/64. Addition to 974, 927. Heading G2A. The photographic film unit of the parent application is modified in that the processing liquid container is caused to discharge the liquid in several streams upon compression and rupture. In one embodiment Fig. 1 (not shown) the container is divided into two. In a second embodiment Fig. 3 (not shown) the seals of the transverse edges of the container are widened near their centres to constrict the cross-sectional area of the container near its centre. The streams of liquid are reunited before the liquid contacts the material to be treated.
Patent GB-377528-A (GB)
Title: Improvements in or relating to electric fluid heating apparatus
IPC: F24H9/20
Filed: 1931-11-09
Abstract: 377,528. Electric fluid heating apparatus. CARLETON, R. A., 9115, Ridge Boulevard, Brooklyn, New York, U.S.A. Nov. 9, 1931, No. 30966. Convention date, Aug. 7. [Class 39 (iii).] The heating elements of an electric fluid heating apparatus each consist of a thin ribbon of metal in the form of a closely spaced spiral which is immersed in the fluid to be heated. The heater comprises a heat-insulated tank, the fluid entering and leaving through pipes 24, 25. A heating device 28 is suspended from a ring 30 by metal strips 29, and comprises three units each consisting of a thin ribbon formed into a spiral 33 clamped edgewise between radial grooved insulating plates 34 supported by arms 36 secured to a central frame member 38. The inner ends of the spirals are connected by a strip 46, and the outer ends are each separately connected by strips 50, 51 to insulated bolts 49, to which the current is supplied from a three-phase line 54. The current passes through a main switch 55 and magnetically operated switch 56, or alternatively through an autotransformer 57, and magnetically operated switch 58. Current to operate the magnetic switches is taken by a pair of wires 60, 60a connected to a handoperated switch 61, the wire 60 leading to a switch 62, which is opened when a float 621 falls due to emptying of the tank, to another switch 63 which opens when the temperature of an element 64 rises above a determined degree, and finally to a switch 65 having an element 66 in the tank, and operating to actuate either of the switches 56 or 58 to keep the fluid in the tank at a fixed temperature. The fluid is caused to flow through the relatively small spaces between the spirals, and is subjected in small streams to the heating effect of a large surface.
Patent GB-1078913-A (GB)
Title: High energy rate forming machine
IPC: B21J7/24
Filed: 1964-08-04
Abstract: 1,078,913. Power hammers. KOBE STEEL WORKS Ltd. Aug. 4, 1964 [July 24, 1963], No. 31056/64. Heading B3H. A gas pressure operated power hammer has its ram 2 connected to a piston-rod 5 passing through a closed gas pressure chamber 8 and having an enlarged end portion 10 upon which the gas pressure acts to hold the ram in its raised position. The end portion 10 is a plunger fitting within a cylinder 11 to which the gas pressure is admitted through conduit 151 and valve 16 for initiating the working stroke. After moving through a stroke distance L the gas pressure in chamber 8 acts directly on the portion 10 to produce a high speed movement of the ram. The latter is raised by jacks 17, 18 controlled by valve 19 and when the plunger 10 enters cylinder 11 the gas therein is discharged through conduit 15 and check valve 14. Ram 2 and bed 4 carry co-operating dies 1, 3 for shaping the workpiece 22. In another embodiment, Fig. 2 (not shown), the end of the piston-rod 5 comprises a cylinder fitting over a fixed plunger; the stroke is initiated by the jacks 18 which move the ram downwardly through its initial stroke, and the pressure in the gas chamber may be varied by introducing liquid into the chamber.
Patent GB-761076-A (GB)
Title: Improvements in or relating to brakes
IPC: F16D55/228
Filed: 1953-11-10
Abstract: 761,076. Disc and drum brakes. BENDIX AVIATION CORPORATION. Nov. 10, 1953 [Dec. 12, 1952], No. 31140/53. Class 103 (1). In a combination disc and drum brake, a brake application is initiated by pressurizing opposed pairs of fluid-pressure cylinders 62 in a brake unit 20 to apply friction pads to the sides of the disc 46, the drag of the disc on the pads causing clockwise or anti-clockwise pivotal movement of unit 20 about its pivotpin 44 to apply shoe brake elements 38 or 36 to the periphery 16 of the disc.
Patent GB-854868-A (GB)
Title: Keys for locks
Inventor: TALBOT DONALD THOMAS
IPC: E05B19/00
Filed: 1958-09-30
Abstract: 854,868. Lock keys. YALE & TOWNE MANUFACTURING CO. July 29, 1959 [Sept. 30, 1958], No. 31142/58. Class 44. A lock key consists of a metal blank covered on its shank a with a plastic sheath b which is of cylindrical form around the end a<3> and also defines a shoulder b<1> between the end a<3> and the remainder of the shank a<4>. The sheath may be of coloured plastic and may be keyed to the blank by means of holes or recesses in the latter.
Patent GB-1268385-A (GB)
Title: Improvements in and relating to voltage-dependent electrical resistors
IPC: C04B35/468
Filed: 1969-06-19
Abstract: 1,268,385. Semi-conductor devices. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 19 June, 1969 [19 June, 1968; 20 June, 1968; 25 Sept., 1968; 8 Oct., 1968], No. 31167/69. Heading HlK. An asymmetrical voltage-dependent resistor comprises a semi-conductive titanate body 1 provided with an ohmic electrode 3 and a non- ohmic electrode 2, the latter consisting of, by weight, 55-93% of an Ag component (e.g. pure Ag or a mixture of Ag and Ag 2 O), 6À5-25% of a combined addition of Pb 3 O 4  and Bi 2 O 3 , and 0À5-38À5% of a further addition of one or more metal oxides based upon B, Cu, Cd, Zn, Ni, Co, Fe, Ti, Nb or Ta. The body 1 may be of sintered barium titanate or strontium titanate, the former material containing aluminium oxide, silicon dioxide and silver oxide as dopants incorporated into an initial mixture of barium carbonate and titanium dioxide prior to pressing, calcining and sintering. The ohmic electrode 3 may be of Al, Zn, Cu or Cu on Al, vacuum deposited, spray metallized or electroplated on to the body 1. Various preferred compositions for the non-ohmic electrode 2 are specified, the mixture being provided with a polyester binder, applied to the body 1 as a paint, fired at 600-920 C. in an oxidizing atmosphere and finally allowed to cool in the firing atmosphere.
Patent GB-1261764-A (GB)
Title: Metallizing expanded plastics articles
IPC: C23C18/38
Filed: 1969-06-20
Abstract: 1,261,764. Metallizing expanded plastics; electro-plating. BADISCHE ANILIN & SODAFABRIK A. G. June 20, 1969 [June 22, 1968], No. 31221/69. Headings C7B and C7F. An electrically conducting layer is formed on the surface of a moulded expanded plastics article by (a) application to the surface thereof of an aqueous solution or dispersion of a film-forming organic polymer containing an atom other than C or H, (b) drying, (c) applying a layer of a coating composition containing an organic solvent, dispersed Fe particles of size <5 p and a film-forming binder, (d) drying or curing the coating and (e) electroless deposition of copper by treating the iron-containing coating with an acid aqueous solution of a Cu salt. The Cu may be deposited from a bath containing CuSO 4  5H 2 O, H 2 SO 4 , glycine and triethanolamine, and a coating of Ni, Co, Cr, or Ag may be applied to the Cu coat electrolytically or reductively. Suitable film-forming polymers, solvents, and binders are listed.
Patent GB-1403745-A (GB)
Title: Spreadable fats
IPC: A23C15/16
Filed: 1972-07-04
Abstract: 1403745 Fatty spreads INSTITUT FUER MILCHFORSCHUNG DER DEUTSCHEN DEMOKRATISCHEN REPUBLIK 4 May 1973 [4 July 1972] 31226/72 Heading C5C A fatty spread of low fat content is obtained from a fat-in-water emulsion by adjusting the fat content to between 35 and 65% at a temperature above the clear melting point and then suddenly cooling it to below 25‹ C. in a cooler or radiator with the exclusion of air and with mechanical working to obtain phase inversion. The initial emulsion may comprise cream or sour milk or butter which has been melted and emulsified, or a mixture of cream and butter, and other animal or vegetable fats may be added. Conventional additives such as salt, flavourings and colourings may also be added, but the process enables one to avoid the addition of emulsifying agents.
Patent GB-714319-A (GB)
Title: Improvements in or relating to tables
IPC: A47B9/20
Filed: 1952-12-10
Abstract: 714,319. Tables. MINET MOBELFABRIK AKT.-GES., F. Dec. 10, 1952 [Dec. 11, 1951], No. 31297/52. Class 52(3) A table top is mounted on supports 37 slidable vertically in hollow legs or side standards 32 and urged upwardly by springs 41. Sprockets 45 engaging racks on the supports serve to equalize movement, the racks may be constituted by lengths of cycle chain 42. Locking bolts 46a, engaging the rack or a separate perforated strip, retain the top at the desired height.
Patent GB-469172-A (GB)
Title: Improvements in or relating to respiratory appliances
IPC: A62B7/04
Filed: 1935-11-12
Abstract: 469,172. Fluid actuated valves. HOFF, C. VON. Nov. 12, 1935, No. 31317. [Class 135] [Also in Group VI] An oxygen-delivery valve for a respiratory apparatus is opened intermittently by a disc l, having pins m engaging the valve lever o, and rotated by a lever g moved by a respiration bellows a and carrying a pawl k engaging a ratchet wheel i on the disc. The wheel i may be actuated by both downward and upward movement of bellows a, the lever g in this case having a cross-piece carrying a pawl at each end ; in this construction wheel i is connected to disc l through a coil spring, and disc l is held from movement by a pawl ; the spring is wound up by the ratchet wheel and rotates the disc after tripping of the pawl by a cam disc on the ratchet wheel spindle. In a modified construction the disc l is rotated through reduction gearing by a vane wheel in the respiratory circuit.
Patent GB-841676-A (GB)
Title: Improvements in temperature measurement
IPC: H05B6/06
Filed: 1958-10-02
Abstract: 841,676. Electrical measuring systems. AJAX MAGNETHERMIC CORPORATION, Oct. 2, 1958 [Oct. 17, 1957], No. 31450/58. Class 40 (1). The temperature of a metal billet is determined by means of a thermocouple comprising two prods movable into and out of contact with the billet to which is delivered a gaseous medium comprising a flux to be burnt with a flame in the region of contact between the billet and the prods. As shown, a metal billet 11 is retained in an induction furnace 10 by an arm 13 of a U-shaped member 12 pivoted at 16 so as to be movable by means of the fluid cylinder 17 from the position shown at 12<SP>1</SP> to the inward position shown in solid lines. The member 12 carries a leaf-spring 23 which in turn carries a H-shaped casting 27. A thermocouple is formed by two rods 29 of dissimilar metal housed in holes in the casting 27 and biased into contact with the billet 11 by springs 30. The electrical contact between the rods 29 and the billet 11 is improved by dissolving oxide or scale by means of a gas flame F emanating from a tube 35 carrying a combustible gas mixed with a flux such as methyl borate azeotrope and acetone. Alternatively fluxes referred to in Specifications 532,267 and 534,084 may be used. Combustible gases specified are acetylene, propane, hydrogen or natural gas. It is stated that the presence of the flame does not cause appreciable error in the temperature measurement.
Patent GB-618124-A (GB)
Title: Improvements in or relating to the moulding of synthetic resin sheets
IPC: B29B11/12
Filed: 1946-10-23
Abstract: A synthetic resin sheet is made by moulding a mixture of a synthetic resin and a liquid monomer, at a temperature at which the monomer does not polymerize, to form a preform having two plane, parallel, major surfaces, placing the preform between the platens of a press, with its centre of gravity over the estimated position of the centre of gravity of the sheet to be formed, and then moulding the preform under heat and pressure.  A framework of gaskets which may be formed from material prepared according to the invention, may be placed on the lower platen of the press. The preform may be a rectangular parallelepiped, a cube, a frustum of a cone, sphere or cylinder or it may have two oval major surfaces.  The synthetic resins used include ethenoidic resins, e.g. polymers and interpolymers of vinyl chloride, vinyl acetate, styrene, and acrylic and methacrylic acids and derivatives thereof, e.g. nitriles, esters, anhydrides and amides. Suitable monomers include liquid organic compounds possessing a CH2=C< group, e.g. vinyl acetate, methyl methacrylate.  The preferred mixture comprises monomeric and polymeric methyl methacrylate.ALSO:A synthetic resin sheet is made by moulding a mixture of a synthetic resin and a liquid monomer, at a temperature at which the monomer does not polymerize, to form a preform having two plane, parallel, major surfaces, placing the preform between the platens of a vertical press, with its centre of gravity over the estimated position of the centre of gravity of the sheet to be formed, and then moulding the preform under heat and pressure.  A framework of gaskets, which may be formed from material prepared according to the invention, may be placed on the lower platen of the press.  The preform may be a rectangular parallelepiped, a cube, a frustum of a core, sphere or cylinder or it may have two oval major surfaces.  The synthetic resins used may include ethenoidic resins such as polymers and interpolymers of vinyl chloride, vinyl acetate, styrene, acrylic and methacrylic acid and derivatives thereof such as nitriles, esters, anhydrides and amides.
Patent GB-175048-A (GB)
Title: Improvements in or relating to apparatus for operating the points of railways and tramways and the like
IPC: B61L5/00
Filed: 1920-11-08
Abstract: 175,048. Thomson, R. A. Nov. 8, 1920. Spring operation; ground levers.-In a. centreless link mechanism, more particularly of the kind described in Specification 7938/12, for operating railway and like points, an oblique contact of the toggle with the crank is provided to arrest gradually the toggle and help throw the points. As shown a dcuble-cranked lever 1, preferably Y-shape, pivots on a pin 2 in the frame 3 and has arms 6, 7 serving as stops for the toggle 4 which rocks at 5 on the central arm of the lever 1. A spring 12 surmounts a bar 8 fulcrumed iu the frame 1 at 9 and connected by a pin 10 to the head 11 of the toggle 4. A handle is mounted on a pin 14 held by brackets 15, 16 and engages the central opening of the lever 1. The bracket 15 has a portion forming the fulcrum 9, while the bracket 16 is secured by the pin 2 and a collar 17. The arms 6, 7 are drilled to connect with the point-rod.
Patent GB-367841-A (GB)
Title: Improvements in or relating to protective equipment for electrical distribution systems
IPC: H02H7/26
Filed: 1930-09-18
Abstract: 367,841. Protective cut-out arrangements. WESTINGHOUSE ELECTRIC & MANUFACTURING CO., East Pittsburg, U.S.A.-(Assignees of Crichton, L. N. ; 61, South Munn Avenue, East Orange, New Jersey, Graves, H. C. ; 124, South Lynn Boulevard, Highland Park, Upper Darby, Pennsylvania, and Feldmann, M. R.; 293, Chestnut Street, Nutley, New Jersey, both in U.S.A.) Sept. 18, 1930, No. 31481/31. Convention date, Sept. 18, 1929. Drawings to Specification. Divided on 363,005. [Class 38 (v).] The Specification describes the same subjectmatter as Specification 363,005, from which it was divided, but the claims differ.
Patent GB-490837-A (GB)
Title: Improvements in or relating to television systems and scanning devices therefor
IPC: H04N3/08
Filed: 1936-11-17
Abstract: 490,837. Television. INTERNATIONAL CARRIER-CALL & TELEVISION CORPORATION. Nov. 17, 1936, No. 31487. Void. Convention date, Dec. 16, 1935. [Class 40 (iii)] The scanning mirrors 4, 5 are mounted on rods 35 tuned to oscillate at the scanning frequencies. Each metal mirror carries a small polarized projection. Slight errors of adjustment of the mirrors are corrected by an adjustable lens 6. Separate carrier frequencies are generated at G, G1, the carrier G1 being modulated by the microphone 18 and being used to drive the scanning mirror 7. Vision signals from cell 2 are said to modulate beat currents from the generators G, G1, these beat currents rectified at 19 serving also to drive the highspeed scanner 8. At the receiver, the carrier and beat frequencies are separated by filters and phase-adjusters and applied to the sound and vision reproducers and to the respective scanning magnets.
Patent GB-824891-A (GB)
Title: Improvements in eddy-current clutches, couplings, brakes and dynamometers
IPC: H02K49/04
Filed: 1957-10-09
Abstract: 824,891. Eddy current brakes, couplings and dynamometers. EATON MANUFACTURING CO. Oct. 9, 1957 [June 17, 1957], No. 31520/57. Class 35. The inductor rotor or drum 9 in the embodiment shown of an eddy current brake, coupling, clutch or dynamometer has axially directed non- interdigitated pole teeth 29 which, viewed in a cross-section, Fig. 2, normal to the machine axis, are defined by spaces 37 which are bounded, within the rotor or drum, wholly by circular arcs whose axes 39 are located at the gap 35 between the rotor or drum 9 and a circumferentially smooth induced rotor or drum 5 the spaces being thereby substantially semi-cylindrical. This is applicable to such machines wherein either of the two rotors or drums 5, 9 may be either the driven or the driving member and provide between them the single diametered cylindrical gap 35 on each axial side of a field coil 25 annularly disposed about the machine axis and excitable to produce a toroidal flux field F interlinking both rotors. The coil may be variably excited via slip rings 27, the magnetic path around the coil is saturated due a described proportioning of the rotors, and preferred ratios of the angles T and D which subtend the pole face width and circular pitch distance of one pole and space width are described. Another embodiment is an inversion of that shown, i.e. an exteriorly toothed inductor rotor is disposed radially within an interiorly smooth induced rotor, and in both embodiments the coil may be disposed in either of the two rotors. Specifications 533,725, 630,535, 636,565, 684,745 and 723,383 are referred to.
Patent GB-744346-A (GB)
Title: Improvements in or relating to supervisory equipment for carrier-wave telephone systems
IPC: H04J1/16
Filed: 1953-11-13
Abstract: 744,346. Frequency measurement. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 13, 1953 [Nov. 17, 1952], No. 31525/53. Class 37. [Also in Group XXXIX] In a two-way carrier telephone system (see Group XXXIX), an amplifier 85 includes in its anode circuit a circuit comprising a condenser 87 and an inductance 86, which is tuned to a predetermined frequency, together with a meter 88. The meter will give an indication of change of the frequency of incoming currents. When the oscillations are interrupted or the change exceeds a predetermined amount a relay 9 gives an alarm. Switches 92 and 93 can be manipulated to show whether the frequency has increased or decreased.