baber/WOPTO huggingface dataset:
Patent GB-753154-A (GB)
Title: Improvements in colour photography
IPC: G03C7/38
Filed: 1954-03-16
Abstract: 1 - hydroxy - 4 - chloro - N - {4 - [2 - (2:4 - di - tert - amylphenoxy) - 5 - (3:5 - di - carbomethoxy-oxanilamido) - benzamido] - phenethyl} - 2 - naphthamide is prepared by heating together 4-chloro - 1 - hydroxy - 2 {b  -} 41 - [211 - (2111:4111-di - tert. - amylphenoxy) - 511 - aminobenzamido]} - phenethyl} - naphthamide and di-methyl 5 - (chloroglyoxylamido) - isophthalate in glacial acetic acid containing anhydrous sodium acetate.  1 - Phenyl - 3 - {3 - [2 - (2:4 - di - tert. - amylphenoxy) - 5 - (3:5 - dicarbomethoxyoxanilamido) - benzamido] - benzamido} - 5 - pyrazolone is similarly prepared. Dimethyl 5 - (chloroglyoxylamido) - isophthalate is prepared by reacting together dimethyl 5-amino-isophthalate hydrochloride and oxalyl chloride. p-Aminophenoxyacetic acid is prepared by reducing p-nitrophenoxyacetic acid with hydrogen in the presence of palladium on carbon.  Specification 2562/13, [Class 98 (ii)], and Specifications 524,154, 541,589, 599,377, [all in Group XX], are referred to.ALSO:1-Phenyl - 3 - (3 - [2 - (2:4 - di - tert. - amyl phenoxy) - 5 - (3.5 - dicarbomethoxy - oxanilamido) - benzamido] - benzamido)-4-[4 - (carboxymethoxy) - phenylazo]-5-pyrazolone is prepared by coupling diazotized p-aminophenoxyacetic acid with 1-phenyl-3-(3-[2-(2:4-di-tert.-amylphenoxy) - 5 - (3:5 - dicarbomethoxy - oxanilamido) - benzamido] - benzamido) - 5 - pyrazolone in pyridine.  Specification 2562/13 [Class 98(ii)], and Specifications 524.154, 541,589, 599,377 [all Group XX] are referred to.
Patent GB-682373-A (GB)
Title: Improvements in the manufacture of moulded glass articles
IPC: C03B11/02
Filed: 1951-04-02
Abstract: 682,373. Glass manufacture. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY, ET CIREY. April 2, 1951 [March 31, 1950], No. 7625/51. Class 56. Comprises a process and apparatus for press moulding glass articles by delivering a parison on to an intermediate support, allowing it to spread thereon until i has assumed dimensions approximating to those of the main mould, and then inverting the support to transfer into the main mould the mass of glass thus obtained so that the surface of the glass that has not been in contact with the support will line the bottom of the main mould, the final shaping of the article being effected by the pressing action of a punch on the contents of the main mould. In the form shown the intermediate support 24 receives the parison 1 and, after the parison has spread, is inverted to discharge its contents into the main mould 13 which then moves to a position beneath a punch 33.
Patent GB-266544-A (GB)
Title: Improvements in electric ovens particularly for dental purposes
IPC: H05B3/00
Filed: 1925-08-26
Abstract: 266,544. Hoberg, W. Aug. 26, 1923. Resistance ovens.-An oven particularly for dental purposes comprises a cylindrical heating chamber formed by three or more curved sections each containing one or more heating resistances, the sections being mounted on an insulating base plate and interconnected for regulation of their relative positions to vary the size of the heating chamber. The section comprise inner and outer metal plates 5, 16 between which are situated insulating plates 154 resistances wound on mica plates 14. The parts are held together by bolts 18 and plates 17. The base is covered by an asbestos sheet and one of the sections is secured thereto. The sections are interconnected by bolts 11. An alarm and temperature measuring and regulating devices are provided. Specification 239,213 is referred to.
Patent GB-790363-A (GB)
Title: Improvements in negative temperature coefficient resistors
Inventor: RAWSON HAROLD
IPC: H01C7/04
Filed: 1954-03-16
Abstract: 790,363. Glass compositions. BRITISH THOMSON-HOUSTON CO., Ltd. May 20, 1955 [March 16, 1954], No. 7636/54. Class 56. [Also in Group XXXVI] A resistor having a negative temperature coefficient consists of a body of glass comprising at least 30 per cent by weight of V 2 O 5 . The remainder of the glass may consist of from 70 to 5 per cent of Pb 2 O 5  or 70-40 per cent of TeO 2 . Other examples of glass composition are (i) at least 70 per cent of V 2 O 5 , less than 10 per cent of PbO and not more than 20 per cent of Pb 2 O 5 , (ii) 74 per cent V 2 O 5 , 18À5 per cent P 2 O 5  and 7À5 per cent of PbO, and (iii) 83 per cent V 2 O 5 , 9 per cent P 2 O 5  and 8À0 per cent of PbO. Alkali metal oxides or alkaline earth metal oxides may be included in the glass. The glass may be cast between chrome-iron alloy sheets, which serve as electrodes, or the electrodes may be provided by spraying or evaporating metal on to separated regions of the body. Specifications 744,205, 744,947 and 746,192 are referred to.
Patent GB-557865-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H50/54
Filed: 1942-06-05
Abstract: 557,865. Electromagnetic switches. CREED & CO., Ltd., and KIRK, S. E. June 5, 1942, No. 7678. [Class 38 (v)] An electromagnetic switch, specially adapted for disconnecting a radio receiver from the antenna, connecting the antenna to earth and immediately afterwards connecting power to the transmitting circuit, comprises an electromagnet 7 the armature of which carries an extension 28 which bears on a cross-beam 22 pressed upwards by an offset spring 17. The beam is loosely supported on two pins 18 and tilts so that a contact 32 at one end engages a fixed contact 21 slightly before a contact 33 engages its fixed contact. The member 28 carries at its other end a contact which is moved out of engagement with an adjustable fixed contact when the armature is attracted.
Patent GB-652432-A (GB)
Title: Improvements in or relating to automobile steering wheel suspension
IPC: B60G7/04
Filed: 1948-03-13
Abstract: 652,432. Universal joints. THOMPSON PRODUCTS, Inc. March 13, 1948, No. 7713. Convention date, Oct. 24, 1947. [Class 65(ii)] [Also in Group XXXII] In a vehicle wheel suspension (see Group XXXII), the wheel supporting and steering member 12 is carried by an upper arm 16 terminating in a box-like end portion which houses a hemispherical ball joint 42 in which is pivoted by needle bearings 40 the stud 26, fast with the steering knuckle 12. The stud 26 has a domed head; a roller bearing 44 is located between the head and the hemispherical member 42, the domed head bears on a cup-shaped member 38 which is maintained in contact with the head by spring 37. The top of the joint is sealed by a spring-pressed washer assembly 46 comprising two steel washers with a felt washer in between. The upper arm 16, acted on by the shock absorber 19. terminates in a cylindrical housing 16a, containing the two halves 54, 51 of a ball socket. The lower half 51 is of metal and the upper half 54 is of rubber and has a wear resistant lining of plastic material. The bearing is provided with a lubricating nipple 57 and is sealed below by spring-pressed steel and felt washers 60. In an alternative construction of the upper joint, figure 2, the upper arm 16 terminates in a housing formed with a hemispherical socket. Seated in the socket is a hemispherical member 66 in which is pivoted by needle bearings 70 the stud 68 fast with the wheel knuckle 12. The stud 68 has a domed head 68a which is pressed downwardly by the spring 78 and cup-shaped member 77, the downward thrust being taken by a bronze wear plate 72 disposed between the head 68a and the hemi-spherical member 66.
Patent GB-599146-A (GB)
Title: Improvements in electronic a.c. bridge circuits
IPC: G01R17/16
Filed: 1945-03-27
Abstract: 599,146. Impedance measurements. MITCHELL, J. H. March 27, 1945, Nos. 7760 and 16328. [Class 37] An alternating current bridge circuit for measuring variations of a variable impedance situated in one arm of the bridge has two ratio arms tightly coupled by a thermionic valve and has a valve connected to the output or input of the bridge which varies the impedance of the balance arm in accordance with the bridge input or output so that the bridge is automatically adjusted to near balance; the variations in the value of the parameters in the balance arm or in the input or output circuits indicate the variations in the variable impedance. A bridge, Fig. 1, comprising four impedance arms Z1, Z2, Z3, Z4, is connected across an alternating current supply 5, 6. The impedance Z1 is varied under the influence of the quantity to be measured, the reactance of the ratio arms Z2, Z4 being negligible at the frequency used. The balancing impedance Z2 comprises a transformer the secondary S1 of which is connected across a triode V2. A change in the value of the impedance Z1 produces out of balance current in the bridge which is fed through an amplifier 17, a phase discriminator 18 and a second amplifier 19 to the grid of the triode V2. The impedance of Z2 is thereby varied and the bridge is rebalanced. An indication of the value of the quantity being measured is obtained across terminals 23, 24 or terminals 25, 26 or from the anode current. Most of the amplification is carried in the amplifier 17, the amplifier 19 responding to direct current as well as alternating current from the phase discriminator 18. In a modification, the triode V2 is replaced by a variable-mu pentode, the point 25 being connected through an inductance to the grid. The bridge output varies the gain of the valve as before but instead of changing the impedance of Z2 by an impedance change occurring in the valve, a signal from the input is fed into the impedance Z2 so as to add to the signal already present therein. In another modification the impedance Z2 has a fixed value and the measuring arm containing the variable impedance Z1 constitutes an ancillary bridge circuit comprising a transformer and a variable-mu pentode. The out of balance current from the bridge varies the main of the valve and thereby balances the ancillary bridge circuit. In a further modification the impedance Z3 or Z4 consists of a variable-mu pentode valve. The out of balance current from the bridge varies the gain of the valve and thereby varies the ratio of the impedances Z3, Z4 and rebalances the bridge. The output signal can be integrated electronically by adding an electronic integrating circuit, or it can be integrated electro-mechanically by a system comprising a constant speed motor, a variable-speed motor, and a differential gear. Alternatively the bridge output may be converted to a voltage and compared with a constant voltage, a motor being driven so that its speed is proportional to the difference voltage.
Patent GB-267979-A (GB)
Title: Improvements in or relating to glass feeding apparatus
IPC: C03B7/086
Filed: 1927-03-21
Abstract: 267,979. British Hartford-Fairmont Syndicate, Ltd., (Assignees of Miller, W. J.). March 20, 1926, [Convention date]. Delivering molten metal.-A feeder of the reciprocating-plunger type is provided with means for adjusting the position of the plunger relatively to the outlet, means for altering the stroke of the plunger, means for rotating the plunger to stir the glass, and means for facilitating the replacement of the plunger. The device comprises a forehearth 1 having a discharge outlet 3 formed below a tapered opening in the floor, shears 5 positioned below the outlet, and a plunger 7 which reciprocates above the outlet. The upper end of the plunger is formed with a groove 8 which is engaged by jaws 10 pivoted on a head 12 secured to the plunger stem 13. A wedge ring 15 engages extensions on the jaws 10 and forces them to clamp the plunger. Withdrawal of the ring 15 releases the jaws and enables the plunger to be replaced readily. The plunger stem 13 is journaled in a yoke 21 which, in turn, is journaled in bearings 25 formed in an aperture in a lever 19. The yoke 21 has an upward extension 26 to which a link 29 is pivoted, and both the link and the lever 19 are pivoted, at 54 and 46 respectively, to a block 32 which is clamped by a bolt 40 and screws 35 to a pair of standards 33. The bolt 40 and the screws 35 enable the position of the block on the standards to be adjusted. The block may be tilted in order to bring the plunger 7 nearer to the hotter side of the outlet in order to equalise the flow of glass through the outlet. The block may be raised or lowered on the standards to move the path of the plunger away from or nearer to the outlet, and also to lift the plunger out of the forehearth. The lever 19 oscillates about its pivot 46 and its weight, and that of the plunger, is counterbalanced by a weight 55. The link 29 keeps the point of the plunger moving in a vertical path. The lever is oscillated by the piston of an air cylinder 61. A screwed rod 65, depending from the outer end of the lever 19, passes through a stop plate 67 and is provided with nuts 73, 74 which engage the stop plate and limit the movements of the lever. By adjusting these nuts, the length and limits of the stroke of the plunger can be adjusted. The stem 13 of the plunger is connected by a universal joint 78 to a squared shaft 79 that slides through a gear wheel 80. The wheel is rotated by a rack shaft 92 formed on the piston rod 93 of an air cylinder 94. The movement of the rod 93 rotates the plunger and causes it to stir the glass in the forehearth. A timing device 99 operates valves 102, 106, 109 which cause the operation in proper sequence of the plunger and the shears. A guide 113, pivoted below the outlet 3, conducts the charges of glass into the mould of the forming-machine. The guide can be swung to one side, by a handle 131, to bring a shoot below the outlet 3 to direct the charges into the cullet pit when the action of the forming-machine is interrupted. Specification 151,605 is referred to.
Patent GB-342574-A (GB)
Title: Improvements in electric discharge lamps
IPC: H01J61/10
Filed: 1930-03-11
Abstract: 342,574. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, RYDE, J. W., and HARRIS, N. L., of General Electric Co., Wembley, Middlesex. March 11, 1930, No. 7920. [Class 39 (i).] In electric discharge lamps for sound recording and other purposes, of the type wherein a positive-column discharge passes through a narrow tube connecting two vessels of larger diameter which contain the anode and cathode, respectively disposed so that there is unobstructed vision along the tube from at least one end of the lamp, the discharge is supported by thermionic emission from the cathode. The example shows a thermionic cathode 1 comprising a helically coiled filament, which may have an oxide coating, supported at right-angles to the axis of the bulb 6 by wires 2, 3 and 7, with a stiffening-support provided by two short wires 9 fused into a glass bead 8. The enc. of the bulb 6 farthest from the pinch 5 is formed into a narrow tube 10 enclosed by a hard glass bulb 11 containing a wire anode 12 sealed through the wall of the bulb 11. The tube may be filled with a mixture of neon and mercury vapour.
Patent GB-851869-A (GB)
Title: Improvements in or relating to electrically heated towel and like rails
IPC: D06F58/16
Filed: 1958-03-12
Abstract: 851,869. Electrically heated radiators. HURSEAL Ltd., and HAZEL, A. C. Feb. 25, 1959 [March 12, 1958], No. 7923/58. Class 39(3). [Also in Group XIV] A heating device comprises an upstanding radiator constituted by two metal plates 10 and 11 defining a liquid containing space 12 provided with an electric heating element 26 extending from one lower corner partly along the length of the radiator and connected to a terminal base and thermostat 28 which in turn is connected to a supply conductor 29. Welded to the top corners of the radiator and in communication with the liquid space 12 are the two vertical limbs 21, 22 of a U-shaped tube having a horizontal limb 20 serving as a towel rail. At least one additional horizontal tube such as 24 or 25 may also be connected in the liquid circuit across the limbs 21, 22.
Patent GB-400235-A (GB)
Title: Improvements in or relating to insulated electrical cables
IPC: H01B7/295
Filed: 1932-03-17
Abstract: 400,235. Cables. JOHNSON & PHILLIPS, Ltd., Charlton, PYNE, A. P., 7, Kidbrook Park Road, Blackheath, both in London, and PARKER, T. B., 30, Repton Road, Orpington, Kent. March 17, 1932, Nos. 7975 and 17426. [Class 36.] A cable is protected against fire and vermin by a layer of fibrous material impregnated with a non-inflammable chlorinated naphthalene preferably a polychlorinated naphthalene, which on the application of heat generates a combustion resisting gas. Impregnated paper cables may be impregnated with the chlorinated naphthalene in place of the usual compound, or a cable impregnated with the usual compound may have a layer of hessian, cotton, or jute, which has been impregnated with the chloronaphthalene, disposed either between the impregnated paper insulation and the lead sheath, or over the lead sheath.
Patent GB-1422161-A (GB)
Title: Static switching system for interconnecting two dc series excited machines
IPC: H02P1/56
Filed: 1973-02-19
Abstract: 1422161 Control of D.C. machines JEUMONT-SCHNEIDER 19 Feb 1973 [18 Feb 1972] 8025/73 Heading H2J Two D.C. series machines I 1 , M 1  and I 2 , M 2  can be connected to operate either as motors or generators and either in series or parallel by a system including a main control circuit A, a voltage controller H and a first logic circuit L 1  for determining whether various potentials of the field and armature windings are in correct relationship for the machines to be switched from one mode to another and controlling a second logic circuit L 2  to carry out the necessary switching and to disconnect the voltage controller during such switching. The machines are supplied through a chopper type controller itself under the control of a unit C. The circuit L 1  detects the voltages at points a, b, c, d, which voltages, when the chopper is switched off, are arranged by resistors R 1 -R 8  to have values relative to the negative supply line in descending order from a to d. If these voltages have the correct relationship, circuit L 1  permits circuit L 2  to switch on those thyristors T 1 -T 6  required for the mode selected by main control A. Unit C is controlled by control A and circuit L 2  to ensure that the chopper is off when the thyristors are being switched. The arrangement is such that, irrespective of the operating mode selected, the current in field windings I 1 , I 2  does not change direction, these windings being interchanged with their respective armatures during the parallel generating mode. During the motoring mode the chopper is connected in series with the machines across the D.C. supply and during the generating mode the series or parallel connected machines form part of a closed loop including the chopper, between point a and cathode of diode D 4  or D 4  and D 5 .
Patent GB-526754-A (GB)
Title: Improvements in and relating to thermally operated electric switches
IPC: H01H71/74
Filed: 1939-03-13
Abstract: 526,754. Thermal switches for controlling electric cookers. TURNER, C. A., and DIAMOND H SWITCHES, Ltd. March 13, 1939, No. 8071. [Class 38 (v)] [Also in Group XXXV] The current to the heater o an electric cooker is controlled by a thermal interrupter com prising a thermal element such as a bimetallic strip 20 whicl is adapted to operate the actuating member 28 of a switch 2,7 through .an inter mediate cam 26 the effective width of which is varied by rotation of a shaft 5 the end 6 of which is adapted to re ceive a handle. The strip 2( has a heater 21 and the swith 27 is mounted on another bi metallic strip 31 to compensate for variations of ambient temperature. The shaft 5 which carries the cam by a flexible portion 22 may also carry cams 14, 15 ... 17 which actuate contact springs 7...10 to obtain different degrees of heat by connecting up the two elements of the heater in different ways. Rotation of the shaft 5 from an "off" position first puts the thermal interrupter into circuit with the two elements in series, giving varying degrees of "simmering" heat according to setting. Further rotation cuts out the interrupter and connects up the elements to give successively " low," "medium" and " high heat. Specifications 515,178 and 527,282 are referred to.
Patent GB-1458122-A (GB)
Title: Preparation of melamine resin films
IPC: D21H17/51
Filed: 1974-02-22
Abstract: 1458122 Laminates CASSELLA FARBWERKE MAINKUR KG 22 Feb 1974 [24 Feb 1973] 8076/74 Heading B5N [Also in Divisions D1-D2] A melamine resin film for use in the manufacture of laminates is prepared by impregnating paper, cellulose fleece or fabric with a solution of monomeric dimethylolmelamine monomethylether, dimethylolmelamine dimethylether, trimethylolmelamine monomethylether, trimethylolmelamine dimethylether, trimethylolmelamine trimethylether, or a mixture thereof, such that 20-45% by wt. of monomer(s) based on the wt. of the dried film is taken up by the paper and curing the impregnated material by drying at 90-200 C. In the examples, the preparation of melamine resin film-chip board laminates is described.
Patent GB-1154801-A (GB)
Title: Improvements relating to Clips for Hanging Curtains or the like
Inventor: HACHTEL WILHELM
IPC: A47H13/01
Filed: 1967-02-21
Abstract: 1,154,801. Suspending curtains. W. HACHTEL. 21 Feb., 1967 [24 Feb., 1966], No. 8125/67. Heading A4B. [Also in Division E2] A resilient plastics clip for gripping and suspending curtains has opposed jaws, one of which may be apertured, which have ribs 6 or other co-operating projections and recesses to improve their grip on the curtain. One jaw has a projecting finger 19 for catching engagement in an aperture in the other. The clip may be formed with a fixing plate 13 or it may be suspended from a curtain ring, in turn arranged on a rod.
Patent GB-1438459-A (GB)
Title: 3=anilino-5-pyrazolone magenta-forming couplers
IPC: G03C7/38
Filed: 1974-02-22
Abstract: 1438459 Magenta forming colour coupler FUJI PHOTO FILM CO Ltd 22 Feb 1974 [22 Feb 1973] 8280/74 Heading C4P [Also in Divisions C2 and G2] A magenta-forming coupler has the formula where R<SP>1</SP> is aryl or heterocyclyl; R<SP>1</SP> is a straightchain, branched-chain or cyclic alkyl having 5-29 C; X is 1-18 C alkoxy or halogen; and Z is arylazo, 2-aminoarylazoxy or 2-amidoarylazoxy. 1 - (2,4,6 - Trichlorophenyl) - 3 - (2 - chloro - 5- n - tetradecanoylaminoanilino)- 4 - α - naphthylazo-5-pyrazolone is prepared by adding an aqueous solution of α-naphthyldiazonium hydrochloride, prepared conventionally from α- naphthylamine, to a solution of 1-(2,4,6-trichlorophenyl) - 3 - (2 - chloro - 5 - n - tetradecanoylaminoanilino) - 5 - pyrazolone in pyridine below 15‹ C.
Patent GB-1415713-A (GB)
Title: Method of manufacturing polymer graft-polymerized onto crystalline  substance
IPC: C08F292/00
Filed: 1973-02-20
Abstract: 1415713 Polymers bonded to crystalline materials LION FAT & OIL CO Ltd 20 Feb 1973 [24 Feb 1972 (2)] 8290/73 Heading C3P A polymer bonded to the surface of an inorganic crystalline substance is obtained by producing the crystalline substance by thermal decomposition of a precursor in a liquid, in the presence of a free-radical polymerizable monomer which then polymerizes on to active sites on the newly formed surface. The substrate may be formed by heating a suspension of KHCO 3  or Na 2 SO 4 .10H 2 O. In examples methyl methaerylate is polymerized on to Na 2 SO 4  and styrene on to K 2 CO 3 , non-bonded polymer being removed by solvent extraction. The product may be used as a filler or, when its polymer content is high, alone as a moulding material.