baber/WOPTO huggingface dataset:
Patent GB-969915-A (GB)
Title: Improvements in or relating to electrical circuit-breakers
IPC: H01H5/04
Filed: 1961-07-18
Abstract: 969,915. Arcing preventing in switches. CENTRAL ELECTRICITY GENERATING BOARD, and W. E. J. FARVIS. July 17, 1962 [July 18, 1961], No. 26010/61. Heading H2B. [Also in Division H3] An apparatus for controlling the instant of operation of a circuit-breaker includes means responsive to input signals representative of the instantaneous value of the alternating current to be interrupted and of the phase of the current with respect to the voltage and providing a circuit-breaker operating signal at the instantaneous optimum operating time with respect to a current zero. In the arrangement of Fig. 1, current and voltage signals are applied respectively to comparators 13 and 14 which give outputs to a gate circuit 15 when the instantaneous values of the signals are zero. The circuit 15 gives a square output pulse which is started and stopped by the output pulses from 14 and 13 so that the length of the output pulse from 15 is representative of the phase angle between the current and voltage and determines the number of pulses given from an oscillator 16 and stored in a counter 17. The alternating current signal is also applied through a halfwave rectifier 18 to an amplitude discriminator 19 (see Division H3) which gives an output representative of the peak amplitude of the line current to be broken. The information concerning phase angle (from 17) and current amplitude is fed to a logic matrix 21 which in conjunction with a system of delay channels 23 causes a triggering pulse to be sent to the circuit-breaker operating mechanism at the appropriate time in the current cycle as determined by the magnitude of the current and its phase angle. A timing pulse generator 20 triggers and resets the various circuit elements. This apparatus may control an air-break, airblast, oil, or vacuum circuit-breaker. Fig. 6 shows a suggested circuit-breaker arrangement in which the energization of spiral coils 63, 65 causes the repulsion of conductive discs 62, 64 so that initially both contacts 52, 53 move together until the movement of the contact 53 abruptly ceases due to the disc 64 abutting a stop 66. The contact 52 moves to its open position under the control of the over-centre spring toggle mechanism shown. The energization of the coils may be provided by the discharge of a charged capacitor, the discharge being initiated through a spark-gap in response to the output from the delay channels 23.
Patent GB-1406942-A (GB)
Title: Graft copolymers
IPC: C08F255/02
Filed: 1973-05-31
Abstract: 1406942 Polypropylene/acrylic acid graft polymers EASTMAN KODAK CO 31 May 1973 [1 June 1972 26 Feb 1973] 26030/73 Heading C3G A graft polymer comprises polypropylene and 0À37 to 1À5% by weight, based on the polypropylene, of reacted unsaturated acid component, at least 75 mole per cent of which is acrylic acid, the graft polymer having a melt flow rate of from 15 to 175 g./10 minutes at 230‹ C. and being processable into a powder which can be applied to surfaces and fused to form coatings. The polypropylene has a conditioned density of 0À90 to 0À93 g./ml. and a melt flow rate of from 0À5 to 60À0 g./10 minutes at 230‹ C. Examples are given in which polypropylene pellets are coated with acrylic acid, or a mixture thereof with maleic anhydride, and initiator and extruded to yield a graft polymer which is pelletized and blended with 2,6- dioctadecyl-p-cresol and dilauryl dithiopropionate, ground and sprayed on to anti-corrosion treated steel panels, which are then heated to fuse the coating. Other stabilizers may be added to the graft polymer before it is ground and white and blue pigments are optionally added to form masterbatches which are blended with a further amount of the graft polymer.
Patent GB-788336-A (GB)
Title: Improvements in nut tightening devices
Inventor: MANN REGINALD WILLIAM
IPC: E21D20/00
Filed: 1955-09-12
Abstract: 788,336. Screwing-up nuts. VICTOR PRODUCTS (WALLSEND), Ltd. Sept. 12, 1955, No. 26058/55. Class 83 (3). [Also in Group XXIV] A device for screwing up nuts comprises a driving shaft 1 for attachment to a source of rotary power 3 and a shaft 10 driven from shaft 1 through a yielding-drive comprising an epicyclic gear 7, 8, 12, the internally and externally-toothed ring-gear 12 normally being held against rotation by a pinion 13 biased by a spring 16 into engagement with the external teeth of gear 12 and mounted on an eccentric pivot 14, the spring 16 yielding when the torque transmitted exceeds a predetermined value to allow the ring-gear 12 to rotate and the driven shaft 10 to stop while the driving shaft 1 continues to run. Over-meshing between the pinion 13, in a slide 15, and the gear 12 is prevented by discs 21 on the pinion bearing on the circumference of the gear 12 at each side of its teeth, The ring-gear is fixed to the casing 23, 24 of the device by screws 25. Dust seals 26 are provided between a nut-socket 4 and the casing element 23, and between the casing elements 23, 24 and an intermediate section 20, which carries a side-spur for preventing its rotation by bearing against the feed-bar of the drill 3 with which the device may be used.
Patent GB-706729-A (GB)
Title: Improvements in tubulous vapour generating and superheating units
IPC: F22B21/34
Filed: 1951-11-07
Abstract: 706,729. Water-tube steam boilers; attemperating. BABCOCK & WILCOX, Ltd. Nov. 7, 1951 [Nov. 10, 1950], No. 26061/51. Classes 123(2) and 123(3) A steam boiler comprises a combustion chamber 50 which is lined with steamgenerating wall tubes 51a, 52a, 53a and, at its upper end, opens into a gas pass 79 which extends laterally above an arch 73 projecting from the side 52 of the chamber 50 towards the opposite side 51 and houses - a superheater 93, 94, the arch 73 defining a space 109 which is screened from the combustion chamber and serves to locate an attemperator 103. The attemperator is in the form of a drum 104 which is connected in the circulatory circuit of some of the rear wall tubes 52a whereby water is caused to pass through the drum in contact with two banks of U-tubes 105, one at each end of the drum, through which steam is adapted to flow in its passage from the outlet header 96 of the superheater section 93 to the inlet header 98 of the superheater section 94, a by-pass connection 108, with valve 107, being provided between the superheated steam pipes 102, 106 leading to and from said drum. Fig. 2 shows the rear wall tubes 52a relatively to the drum 104, every fourth one 52b being connected to the bottom thereof: the remaining tubes 52c are extended along the underside of the arch 73, whereupon one tube 52d of every three is further extended upwardly across the entrance of the gas pass 79, and, as regards the other two tubes 52e, one 52f is connected to the said drum and the other 52g continues along the upper side of the arch 73, and then through the rear of the pass 79 to the steam-andwater drum 55, in alignment with tubes 111, 112 which have their lower ends connected to the drum 104 and constitute risers therefrom. The drum 104 is also provided at each end with additional risers 114 arranged in a row in alignment with the corresponding side wall tubes 53a. A modification is described in which the combustion chamber is divided bv a tube wall into two separately-fired sections and the primary superheater section 93 is located in a flue or gas pass 80 parallel with the combustion chamber. Specification 696,047, [Group XII], and U.S.A. Specification 2,633,831 are referred to.
Patent GB-1339306-A (GB)
Title: Injection moulding machine
IPC: B29C45/00
Filed: 1971-04-19
Abstract: 1339306 Injection moulding K HEHL 19 April 1971 [24 April 1970] 26074/71 Heading B5A Working units such as injection units, core pullers and extractors are fastened to an injection moulding machine by bolts, e.g. 22, winch pass through machine bores to engage threaded bores in the ends of struts supporting the units, each bolt being co-axial with its respective strut and each strut end abutting an annular shoulder, e.g. 13, in the respective machine bore. As shown, machine bores are provided in the parts 21<SP>1</SP> of a stationary mould clamping plate 21 to receive the struts 1, 2 of an injecting unit 43, in sleeves 7 provided on unit-supporting carriages 7 slidably mounted on the top and sides of the plate 21 and in sleeves 8 provided on a pair of struts 9 pivotally mounted on the machine base 36. The unit 43 includes a hand lever (33, Fig. 1) which passes through an apertured frame leg (27<SP>1</SP>) to engage a perforated plate (35) to allow the unit to be slid on nylon bearings (50, Fig. 1) into or out of the bores 40 in the plate parts 21<SP>1</SP>. The unit 43 includes a cylinder 3 held by a bridge 5 and a screw conveyor 6 driven by a fluid motor 10 held on a bridge 24, the bridges 5, 24 being slidable on struts 1, 2. A mould clamping unit 52 which includes the plate 21 and a movable plate 14 is slidably mounted on the struts 9.
Patent GB-863901-A (GB)
Title: Rotary regenerative heat exchangers
IPC: F28D19/04
Filed: 1958-08-14
Abstract: 863,901. Thermal regenerators. AIR PREHEATER CORPORATION. Aug. 14, 1958 [Aug. 23, 1957], No. 26130/58. Class 64(1) In a thermal regenerator in which a disc type rotor 10 rotates in a stationary casing 12 provided with inlet and outlet openings for each of two heat exchanging fluids, peripheral and diametral seals are provided between the rotor end faces and the casing and the sealing pressure is maintained by a cushion 72 of heat resistant, resilient, spongy material such as a silicone material, which urges a carbon sealing member 68 (see Fig. 5) into sealing contact with the upper end face of the rotor. The rotor, which is supported on a lower flange 60 of the housing through an annular packing 66 and a further carbon sealing member 68, comprises two wheellike end members (see Fig. 3), spaced apart by a sleeve 38 and each consisting of a hub 32, rim 34 and spokes 36. Sectorshaped baskets of heat transfer material 42 are disposed around the member 38 between the spokes 36 of the rotor end members. Resilient packing 48 permits of differential expansion between the various parts of the rotor. An outer shell extends between the rims of the wheellike rotor end members and comprises a metallic strip secured to each rim and having lateral slots therein extending from opposite edges alternately (Fig. 4, not shown).
Patent GB-790982-A (GB)
Title: Haloaryl aziridinecarboxamides
Inventor: FISCHBACK BRYANT CHARLES
IPC: C07D203/20
Filed: 1956-08-27
Abstract: The invention comprises a haloarylaziridine carboxyamide or thiocarboxamide of the formula: <FORM:0790982/IV (b)/1> wherein one X is bromine, chlorine or iodine, and the remaining X symbols each is hydrogen, methyl, chlorine, bromine or iodine, Z is O or S and Y is hydrogen or lower alkyl.  The products may be prepared by mixing aziridine or its 2-alkyl derivatives with a haloaryl isocyanate or isothiocyanate in a solvent.  In examples aziridine (ethylene imine) reacts with 4-chlorophenylisothiocyanate, 3-chlorophenyl isocyanate, 3 : 4-dichlorophenyl isocyanate, 4-bromophenyl isocyanate and 3-chloro-4-methyl-phenyl-isocyanate, to give the corresponding chloro- or bromo-phenyl carboxyanilides or thiocarboxanilides; 2-n-butyl aziridine reacts with 4-iodophenylisothiocyanate to give the 41-iodo - 2 - n - butyl - 1 - aziridine thiocarboxanilide, and a number of other bromo, chloro and iodo, and alkyl substituted aziridine thio and carboxanilides are specified.  Haloarylisocyanates and isothiocyanates required are prepared by the reaction between haloaniline- or toluidine-hydrochloride on phosgene, or carbon disulphide with alkali or ammonium hydroxide, respectively, followed in the latter case by the action of lead nitrate in aqueous solution on the product.ALSO:Disinfectant, fungicidal and germicidal compositions comprise aqueous dispersions of anilides of the general formula:  <FORM:0790982/VI/1> wherein one of the X symbols represents chlorine, bromine or iodine, and the remaining X symbols each represent hydrogen, methyl, chlorine, bromine or iodine, Z represents oxygen or sulphur, and Y represents hydrogen or a lower alkyl radical.  An aqueous dispersion of 41-chloro-1-aziridinecarboxanilide is particularly referred to.
Patent GB-444074-A (GB)
Title: Improvements in or relating to television
IPC: G02B26/02
Filed: 1934-09-12
Abstract: 444,074. Television. BROWNE, C. O., 29, Monk's Drive, West Acton, London, and ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex. Sept. 12, 1934, No. 26249. Addition to 404,020. [Class 40 (iii)] Variations in the average or the peak strength or both, of picture signals, are automatically counteracted in a television transmitter of the type in which scanning is effected by an electron beam, the picture elements being stored either on a mosaic photo-electric screen, or on a mosaic screen associated with a separate photosensitive surface as described in Specification 442,666, or on a mica screen carrying photosensitive material. In a transmitter, Fig. 1 (not shown) in which the image is projected on to a photoelectric surface and signals are passed capacitatively to a conductive plate, the picture signals are applied to an output amplifier 11, in shunt with a valve 13 whose anode current governs a solenoid 24 which operates an iris diaphragm 28 to control the luminosity of the image projected on to the photo-electric screen. The arrangement is such that the grid current flows when the picture signals reach their maximum positive value, corresponding to the darkest parts of the picture, and as a result the diaphragm responds so as to maintain a steady mean brightness of the projection. Alternatively the diaphragm may respond to the maximum brightness represented by the signals, or to the mean brightness or to mean and peak brightness in combination; or the invention may be applied to systems in which a datum amplitudelevel is given to the signals during the periodical interruption of the scanning beam. In a modification, Fig. 3 (not shown), the diaphragm is controlled by a motor controlled by the valve. Specification 446,661 also is referred to.
Patent GB-518338-A (GB)
Title: Device for protecting constructions from bombardments from the air
IPC: B63G13/00
Filed: 1938-09-09
Abstract: 518,338. Protective netting. HAASE, M. Sept. 9, 1938, No. 26316. Convention date, Feb. 17, [Class 20 (i)] [Also in Group XXXIII] A protective net for buildings, ships and the like comprises a system of cross cables suspended by springs or like resilient supports above the part to be protected. The net is formed of cross cables 8, 9 attached by means of springs 8<1>, 9<1> to supporting cables 6, 7, which are supported by resilient means 10, 11 from pillars 2. The pillars 2 may be mounted on ball joints and supported by resilient stays. The main net is covered with fine meshwork 13. For a ship, Figs. 4 and 6, the nets are supported resiliently in inclined positions, the wires 15 lying in one direction being connected by loop wires 18 disposed beneath the net, so that the upper surface is uninterrupted and bombs are deflected by the netting. ' The nets may be provided with painted cloth to camouflage the building or ship.
Patent GB-1487671-A (GB)
Title: Apparatus for determining the content of water in oil
IPC: G01N33/28
Filed: 1975-06-20
Abstract: 1487671 Measuring water content in oil I B D JENSEN 20 June 1975 [26 June 1974]  26362/75 Heading G1S Water is removed from oil by evaporation, the vapour condensed and the condensate discharge rate provides an indication of the water content. Heaters 27 are provided in an element 2 and oil is fed from a supply pipe 5 through a control valve (not shown) to a feed channel 13 and to an inlet opening 14 from which the oil follows a zigzag path in an inclined oil flow plate 18 to a discharge channel 20. From there the oil flows over a bi-metal strip 17 which controls an overflow valve 16, increasing its opening at falling temperatures. The water vapour is collected through an opening 21 and passes to a separate condenser in a panel 3 from which the condensate is discharged in drops from an outlet 24. Electrodes 25 may be used to detect the drops and thus aid the measurement of time interval between drops.
Patent GB-247258-A (GB)
Title: Improvements in and relating to reciprocating engines or motors, more particularly internal combustion engines
IPC: F02F7/00
Filed: 1924-11-05
Abstract: 247,258. Wans, O., and Ruston & Hornsby, Ltd. Nov. 5, 1924. Pistons ; connecting - rods ; crossheads.-Means for inspection or removal of the reciprocating parts of an engine comprises supporting the upper part of the piston, in the case of a divided trunk - piston, or the piston and piston-rod, in the case of a crosshead drive while the big-end is disconnected and the lower half of the piston or the cross-head and the connecting rod are lowered and pivoted about a point at the bottom of the crank-case; after removal of the cross-head the operation may be repeated for removing the piston and piston-rod. A trunk piston is shown comprising two parts b, c connected by bolts d. The part b is supported by a rod X and the lower part c is retained on the connecting rod k by a clamp v, w. The flanged big-end of the connecting-rod is detached from the crank-pin bearing m and mounted on an inverted U-shaped member o having a bearing-boss or a pin q pivoting on a trough shaped boss p on the crank-case. The member o may have one or more additional pivot-pins r which in succession pivot on the members p as the connecting-rod is swung to the right to the position shown dotted; by this means the piston is raised clear of the opening u which is normally covered. According to modifications the pin q may be passed through holes in the ribs in the crank-case or the member o may be omitted and a socket provided in the crank-case for the end of the connecting rod to pivot about. A floating gudgeon a is mounted, as shown in Fig. 2, in bushes having ends h and flanges i which are retained between the divided piston; one end h has a thimble j for a scraper for oil on the cylinder walls.
Patent GB-334377-A (GB)
Title: Improvements relating to the manufacture of ropes
IPC: D07B1/02
Filed: 1929-08-30
Abstract: 334,377. Briggs & Sons (Elland), Ltd., J., Robinson, F. W., and Kershaw, H. T. Aug. 30, 1929. Made by special methods of twisting.-A driving or other rope comprises a number of cores composed of separately twisted threads forming cords A which are laid parallel with one another, or given a slight amount of twist, and are bound together by outer twisted cords B to form strands, three or more strands being twisted together to form the rope.
Patent GB-1420060-A (GB)
Title: Producing a photographic image by flash exposing a silver halide  material
IPC: G03C1/29
Filed: 1972-12-28
Abstract: 1420060 Photographic images by flash exposure of silver halide materials FUJI PHOTO FILM CO Ltd 28 Dec 1972 [28 Dec 1971 13 June 1972] 26429/75 Heading G2C A photographic image is produced by imagewise exposing for less than <SP>1</SP>/ 1000  second and developing a photographic light-sensitive silver halide material comprising a support bearing a silver halide emulsion layer containing a sensitizing amount of a simple merocyanine dye wherein the C atom at the 5-position of a 4-oxo-2-thioxo-1, 3-oxazolidine ring, rhodanine ring or 2-thiohydantoin ring is directly connected with the C atom at the 4- or 2-position of a pyridine ring, thiazole ring, selenazole ring, oxazole ring or imidazole ring which rings may have fused benzene or naphthalene rings. The dye may have the Formula:- where Y is O, S, or = NR'; R and R' are each a saturated or unsaturated aliphatic hydrocarbon group or aryl group which groups may be substituted or unsubstituted; and Z completes a pyridine, thiazole, selenazole, oxazole or imidazole ring, which rings may have fused benzene or naphthalene rings. The dye may have the Formula: where Y<SP>1</SP> is O or S; and R<SP>1</SP> and R<SP>2</SP> are each unsubstituted alkyl, allyl, sulphoalkyl or carboxyalkyl. The mean grain size of the silver halide grains may be 0.04-0.8 micron. The emulsion may contain a sensitizing amount of a further sensitizing dye having its maximum light absorption at longer than 520 nm e.g. a carbocyanine or dimethine merocyanine dye (see Example 5).
Patent GB-834654-A (GB)
Title: Improvements in pulling clamp for wire drawing machine
IPC: B21C1/14
Filed: 1958-08-18
Abstract: 834,654. Drawing. SYNCRO MACHINE CO. Aug. 18, 1958 [Sept. 17, 1957], No. 26514/58. Class 83 (4). [Also in Group XXV] Apparatus for drawing wire comprises a capstan, a die mounted adjacent the capstan and a wire pulling clamp mounted on the capstan and comprising wire-gripping elements oscillatable as a unit about an axis parallel to that of the capstan. The die 11 is mounted in a cylindrical holder 35 and is longitudinally held in an oval recess 37 by two pins 40 inserted through the base of the holder which is screwed to a plate 13 pivotally mounted on the machine housing 14 and clamped by a screw 45 in one of two positions suitable for the loading and drawing of the wire respectively. The pulling clamp comprises a support 15 for a rotatably mounted cylinder 21 having keyed serrated jaws 23, 24 aligned by a traverse groove 32 and a lug 31 respectively and slidably mounted in a V-shaped opening 22. The jaws are also keyed 26, 28 and 27, 30 respectively to corresponding keyways in a disc 21. The support 15 is connected by a chain 16 to a hook 17 which engages one of several apertures 18 in the capstan 10. In operation, the jaws are closed on to the wire 34 by the force exerted on the chain by the capstan and opened after drawing by a hammer blow on a lug 33 of the jaw 23. The pulling clamp is progressively transferred from capstan to capstan.
Patent GB-645667-A (GB)
Title: Mobile collapsible-box like toy for use as a greeting card or container
IPC: A63H33/00
Filed: 1948-10-13
Abstract: 645,667. Greeting cards ; folding toys. FLEGG, F. S. Oct. 13, 1948, No. 26653. [Classes 11 and 132 (iii)] [Also in Group XVII] A greeting card, carton, container &c. of paper, board or wood and which can be used as a toy comprises four walls 1, 2, 3, 4 hingedly connected together so as to collapse flat or open out, means for holding the device in the open position or for closing its top and bottom such as flaps 5, 6, a panel 8 hingedly connected to one end wall adapted to be folded flat on the device or placed perpendicular to the end wall, a tape 9, cord or the like secured to the panel, and wheels 10, 11, skids 10a, 11a, slides or shaped projections so that the device can be moved. Preferably the walls 3, 4 terminate above the walls 1, 2 at their lower ends and the panel 8 is secured by hingedly connected flaps 7, 7a. The device may be constructed from a single blank with the hinges formed by crease or score lures and the rotatable wheels mounted on eyelets. It may be printed or otherwise ornamented as with "cutouts " and provided with a calendar. In a modification top and bottom closure flaps 14 with tuck in flaps 15 (Figs. 4, 5, not shown) may be provided, and also a wheel 16 rotatable if desired on the panel 8. Another panel may be connected to the end of the body.
Patent GB-467062-A (GB)
Title: An improved current core with a magnetic shunt for induction measuring apparatus
IPC: G01R11/36
Filed: 1936-10-01
Abstract: 467,062. Supply meters. LANDIS & GYR AKT.-GES. Oct. 1, 1936, No. 26661. Convention date, Oct. 12, 1935. [Class 37] The damping effect of the current magnet is compensated in respect of the load-error curve, by shunt plates 3, 4 secured to the pole faces of the U-shape current core 1 and spaced therefrom by non-magnetic washers 12, 13, the shunt path projecting laterally from the current core and including an air gap 5, in this lateral part. A further shunt plate 11 is secured to each of the plates 3, 4, with an intermediate plate 10 of brass. In a modification, two air gaps 5 are provided and two sets of plates 10, 11 employed.