baber/WOPTO huggingface dataset:
Patent GB-1274040-A (GB)
Title: Selective access, display system
IPC: H04N7/18
Filed: 1969-07-17
Abstract: 1,274,040. Educational television systems. R.C.A. CORPORATION. 17 July, 1969 [22 July, 1968], No. 36135/69. Heading H4F. [Also in Division G5]  Video display equipment for use in an instructional system comprises one or more student subscriber stations 14, 214, Fig. 1, each of which includes a persistent image display tube 16 and circuitry which contains means for providing a scene solution signal pre-recorded with a corresponding commentary on magnetic tape passing through a recorder 18 operated by the student, means for recognizing a cue signal indicating the start of a cyclically repeating series of scene signals in a common transmitter 10, and gating means allowing selective access to the desired scene signal, the selected signal being applied to the display tube 16. The cyclically repeating scene signals may be obtained from a continuous loop of film by means of a television pick-up device. Fig. 2 shows a student subscriber station according to one embodiment. The scene selection signal, consisting of a series  of equally spaced pulses, the number of which corresponds to the scene signal required, is detected by circuit 28 and the first pulse of the series triggers a monostable multivibrator and differentiator circuit 32, the output of which thus consists of a positive pulse coinciding with the first pulse of the scene selection signal and a negative pulse occuring after an interval determined by the time constant of the multivibrator, which is longer than the duration of the longest selection signal. The positive pulse is detected at 36 and used to erase any scenes present on the tube 16, while the negative pulse is used to trigger a flip-flop 44 which activates an AND gate 46 to pass a pulse from a circuit 50 when the latter detects the cue signal in the cyclic video signal. This pulse triggers a further flip-flop 62 to activate an AND gate 66 to pass vertical sync. pulses detected by circuit 70, which circuit also divides the frequency of these pulses by two. A comparator 76 consisting of a series of binary circuits (94, 96, 98, 100), Fig. 3 (not shown),which has been previously primed on line 78 with the scene selection signal detected by circuit 28, then receives the pulses from the gate 66 and emits on line 80 a pulse of one frame duration when the desired number of pulses have been received from gate 66; i.e. when the desired scene is being represented by the video signal. This one frame pulse opens a video gate 24 and supplies the desired scene to the tube 16. The desired scenes may comprise stills and animated sequences, and special circuitry for handling the latter is also described (Fig. 8, not shown). A more sophisticated modification of the circuit shown permits the pre-recorded scene selection signal to be in binary form (Fig. 5, not shown).
Patent GB-176918-A (GB)
Title: Process for the extraction of metallic compounds from blast furnace and like slags
IPC: C21B3/06
Filed: 1921-09-23
Abstract: 176,918. Collier, A. Sept. 23, 1921. Bulk evaporators.-A liquor obtained by treating blast furnace and like slag with acid is passed to a boiler 25 and thence to an evaporator and calciner 28, which preferably has a flat bottom and arched roof, and is inclined as shown, being heated most at the upper end. The solid salts are traversed up the incline and out of the liquid by a rake 32 carried by cranks 34, the spaces between the blades being cleared by scrapers in the form of blades 35 which are supported flexibly and resiliently from the roof, and are free at their lower ends. The decomposition of the solid salts in the upper part of the evaporator 28 produces fumes of hydrochloric acid and some ferric chloride. The fumes escape by a pipe 36 to a scrubber 37, and the solid residue passes through rollers 39 and falls into warm water in a tank 40 having stirrers 41. A current of air is supplied by a pipe 44 to the space below the rollers 39 to carry the hydrochloric acid fumes upwards past a baffle 45.
Patent GB-805092-A (GB)
Title: Improvements in or relating to electronic amplifier circuits
Inventor: WEIGHTON DONALD
IPC: H03F1/50
Filed: 1954-12-15
Abstract: 805,092. Valve amplifying circuits. PYE Ltd. Dec. 15, 1955 [Dec. 15, 1954], No. 36300/54. Class 40 (6). A wide-band low-noise amplifier comprises a pair of cascade-connected triodes, negative feedback being provided around the second valve in such a manner that regeneration through the anode-grid capacity of the first valve does not occur. In a low-frequency embodiment, Fig. 1 (not shown), comprising a resistance-capacity coupled pair, the resistance forming the anode load of the second valve is returned to the anode of the first valve instead of H.T. +. In a tuned radio-frequency embodiment, Fig. 3, the anode to grid capacity of each of the valves V1, V2 is tuned out by means of an inductance, L3, L3<1> respectively and negative feedback around valve V2 provided by resistor R. This embodiment also includes a pentode output stage V3 and the band width of the amplifier is increased by overall negative feed. back over resistor Rx.
Patent GB-444835-A (GB)
Title: Improvements in hurricane lamp glasses
IPC: F21L19/00
Filed: 1934-12-20
Abstract: 444,835. Hurricane &c. lamp glasses. KENYON & CO., Ltd., A., and GORTON, C. W., Victoria Bridge, Manchester. Dec. 20, 1934, No. 36491. [Class 75 (ii)] A glass for a hurricane or like lamp is formed on its outer surface with a number of spaced-apart rounded ribs or flutes a disposed longitudinally and /or circumferentially, its inner surface being formed with corresponding recesses or flutes b. The spaces c between the ribs may be cylindrical, flat, or concave, and of a width about equal to that of the ribs, and the curvature of the recesses is less than that of the ribs. The glasses may be cylindrical, truncated, conical, or of the usual bulbous shape shown in Fig. 13, they may be made of high-transmission fireproof glass, and they may be colourless or of a colour such as red, orange, or green.
Patent GB-886369-A (GB)
Title: Improvements in non-refillable bottle closures
Inventor: WHITTAM ALBERT
IPC: B65D49/06
Filed: 1960-10-25
Abstract: 886,369. Non-refillable stoppers. HAIG & & CO. Ltd., JOHN. Oct. 25, 1960, No. 36548/60. Class 66. A non-refillable bottle stopper comprises a casing 3 providing a seat for a movable valve member 12 apertured at 14 and on which seats a glass ball 15 weighted by a larger glass ball 19 under a baffle member of which prongs 20 guide the ball 19 in its movement when the bottle is tilted. The baffle member, which has a central aperture 21a in a flange 21 and lateral slots 24 in a tubular part 23 is held in position by a nozzle member 26, a flange 28 of which seats on a sealing ring 5 on the bottle neck. A metal shell 29 holds the stopper on the said neck. On tilting the bottle the ball 15 is permitted to move from the aperture 14 whereby air may enter the bottle thus breaking a possible vacuum formed between the liquid and the stopper which would otherwise retain the valve member 12 on its seat. Apart from the balls 15 and 19, the stopper parts are of a transparent or translucent synthetic resin.
Patent GB-411563-A (GB)
Title: Improvements in or relating to grass boxes for lawn mowers and the like
IPC: A01D34/42
Filed: 1932-12-24
Abstract: 411,563. Lawn - mowers. TRAFFORD, C. W., 5, Burleigh Street, Chorlton-on- Medlock, Lancashire. Dec. 24, 1932, No. 36580. [Class 6 (ii).] Grass boxes for lawn-mowers &c. are formed from sections connected together so that they may be turned flat on one another but which are capable of being opened out and secured in the extended position. The box is formed of a rectangular wire frame a to which the sheet metal end pieces b are hinged by their beaded edges b<1>. The front of the box is formed of a sheet metal plate c which is hinged to the frame a and has a back piece d of sheet metal or fibre hinged to its bottom edge. The back piece d, when in use, is bolted to the flanges b<2> of the ends b and to a metal flap e hinged to the top of the frame a. The front c may be provided with metal hooks f to engage the mower or, alternatively, the hooks may be formed as loops f<1> in the wire frame a, Fig. 5, or as projecting pieces g, Fig. 7, on the ends b. When the back d is unbolted the ends b can be folded flat. The back d may also be hinged in the middle to facilitate packing.
Patent GB-871801-A (GB)
Title: Improvements in photographic reproduction processes and in photographic silver halide emulsions therefor
IPC: G03C1/10
Filed: 1956-11-30
Abstract: N-Methylmryistylaminopolyethylene oxide is prepared by adding ethylene oxide slowly to N-methylmyristylamine in the presence of boron fluoride-ethyl ether complex as catalyst.  Specifications 235,211, 380,431, 380,851, 548,109, 557,178, 558,710, 560,082, 592,676, 600,058, 636,140, 680,593, 682,355, 742,219, 742,221, 742,224, 748,745, 752,030, 755,369, 757,653, 814,823, 815,075, 876,053 and U.S.A. Specification 2,441,389 are referred to.
Patent GB-391465-A (GB)
Title: Improvements in web-control devices particularly applicable to rotary photogravure multi-colour printing machines
IPC: B41F13/02
Filed: 1931-10-28
Abstract: 391,465. Feeding webs. GREAVES, W., The Woodlands, Shadwell, near Leeds. Oct. 28, 1931, No. 36779/32. Divided on 391,461. [Class 100 (i).] In a rotary photogravure printing-machine of the kind in which a plurality of printing units A .. D are used for making successive impressions on a web, web-controlling means is provided comprising a plurality of freely mounted rollers 32 for guiding the web through the printing-couples 3, 4, the rollers being arranged so that the path of the web may be arranged so as to ensure drying of the ink between successive impressions. The invention is described in connection with a machine of the kind described in Specification 391,461. The rollers 32 over which the web passes immediately before and after receiving an impression are all geared by bevel gearing to a common shaft 34 so that their speed is the same, and during the printing operation the rollers 32 are driven by the web whieh is advanced by the printing-couples. At the commencement of the operations, the rollers 32, which are preferably covered with plush, are driven by a hand-lever 35 on the shaft 34 to thread the web through the machine. Certain of the guide rollers 32a are mounted at one end in eccentric bearings 36, so that if the design is slightly askew on the printing- cylinder, a correct print may be obtained by adjusting the bearings. Between the first guide rollers 32 is provided a brake for maintaining the tension of the web consisting of spring-pressed arms 38 fitted with a roller 39, over which the web passes, and with a brake pad 41 which presses the web against one of the rollers 32 when the web is slack.
Patent GB-807239-A (GB)
Title: A holder or stand for a yarn package
Inventor: OXLEY FRANK
IPC: B65H49/06
Filed: 1955-12-23
Abstract: 807,239. Yarn package support means. OXLEY & SON Ltd., W. Nov. 29,1956 [Dec. 23, 1955], No. 36870/55. Class 120(2) A support for a yarn package 8 comprises a base formed by a one-piece circular plastic moulding having a central hollow boss 2 into which the package tube 7 may be pressed to allow the package to compress a resilient pad 5, preferably of foamed rubber or plastic, to prevent the unwinding yarn slipping under the package, and an annular floor element 4, which may be formed of a number of radial arms, or be plate-like with or without apertures and which extends from the lower part of the boss 2 and supports the pad 5, an upper flange 1 around the floor part 4 and a lower flange 1a. The boss 2 may comprise a number of spaced lugs or tongues, and may be parallel sided or slightly tapered to ensure a grip of the tube 7.
Patent GB-1435593-A (GB)
Title: Porous abradable seal structures and method of manufacture
IPC: B23D13/00
Filed: 1973-08-03
Abstract: 1435593 Porous abradable seal structures GENERAL MOTORS CORP 3 Aug 1973 [17 Nov 1972] 36976/73 Heading B3A [Also in Division F1] A method of making a porous abradable seal structure 22, Fig. 1, 5, comprises providing a plurality of sheets 27, operating upon end sheet to provide a number of parallel strips 23 joined at intervals by weak ties 28, Fig. 3, forming grooves 30 extending across one face of at least some of the strips, stacking the sheets together with the strips aligned, bonding the sheets together, and dividing the sheets at the ties so that each stack of strips defines a seal strip with the grooves defining pores through the seal strip. Each sheet 27 is preferably prepared from metal sheet by photoetching to provide the grooves 30 and slots 35. Lands 31 are provided where the sheet is not attached. The stacked, etched sheets are subjected to heat and pressure in a furance to diffusion bond them together. The strips are then separated, e.g. by sawing. Curvature may be imparted to the strips by passing the latter through rolls or exerting force on the strips using curved dies. In an alternative embodiment, Figs. 6-8 (not shown), the webs 36 are omitted and free standing portions (52) are formed adjacent lands (54) the latter forming the weak joining ties. Because of the lack of a supporting web structure, thin unetched intermediate sheets 55 are placed either side of the sheet (42) and are separated at ties (54) after bonding to provide a laminated sheet. The seal structure 22 is fixed, e.g. difiusion bonded, to rings 14, 15 which defines a shroud 12 which may be segmented and is located circumferentially of a turbine case 2.
Patent GB-1087363-A (GB)
Title: High frequency diode
Inventor: ANDERSON DEAN BROWN
IPC: H01L21/24
Filed: 1965-08-27
Abstract: 1,087,363. High-frequency diode. NORTH AMERICAN AVIATION Inc. Aug. 27, 1965, No. 36988/65. Heading H1K. [Also in Division H3] A high-frequency diode for operation down to 10 GHz, comprises a body of semi-conductor material of one conductivity type, a diffused island of opposite conductivity and an ohmic connection surrounding the island, the depth of the diffused junction being not less than " skin depth " at the lower end of the operating frequency whereby current flow through the junction is limited to the periphery of the island. This type of diode is said to have low capacitance. Skin depth is defined as the depth at which the field strength is 37% of the field strength at the surface of the material. A slab 12c of N-type GaAs or Si has a diffused island 30 of P-type material formed therein which is surrounded by an ohmic contact of gold 34. A gold contact 38 is used on wire 36 while a film of silicon oxide 40 covers the slab 12c. The gold film 34 may be extended to cover the sides of slab 12c (as in Figs. 4 and 5, not shown) whilst the island 30 may be oval, square, star or rosette. A light-sensitive diode (Fig. 6, not shown) may also be made wherein the capacitance is varied according to the light received. Other forms of diode may be light emitting, switching and backward diodes. In another embodiment a varactor diode is used in a parametric amplifier (Fig. 4, not shown), the slab 12c acting as a resonant cavity.
Patent GB-1451233-A (GB)
Title: Aluminum welding
IPC: B23K35/28
Filed: 1973-08-03
Abstract: 1451233 Welding by fusion ALUMINIUM CO OF AMERICA 3 Aug 1973 37025/73 Heading B3R [Also in Division C7] Aluminium or aluminium base alloy workpieces containing 3% max. Cu are fusion welded together using a filler metal (e.g. a rod or wire) containing at least 85% Al, 1% max. Cu, and, to reduce porosity in the weld, at least one of 0À2-2% Fe, 0À2-2À5% Ni or 0À5-2% Co, minimum values of 0À85% Fe, 0À65% Ni and 0À1% Co applying where only one of said Fe, Ni, Co-present, and the total of Fe + Ni + Co not exceeding 3%. The filler metal may contain 2-6% Mg or 3-11% Si, and, particularly when containing 2-6% Mg, may also contain one or more of 0À05-1% Mn, 0À05-0À4% Cr, 0À01-0À2% Ti. The workpieces may contain one or more of Si, Cu, Mg, Zn, Cr, Mn (e.g. 0À6% Si, 0À25% Cu, 1% Mg, 0À2% Cr), be cast or wrought, be of different compositions, and be cleaned with toluene or methyl-ethyl ketone. The filler metal may, e.g. comprise a filler in a 'TIG arc or combustible gas flame process or a consumable electrode in a MIG, e.g. argon, arc process, or be included in a coated consumable electrode. The description refers to butt, T-joint and rod to plate welding.
Patent GB-413746-A (GB)
Title: Improvements in or relating to electrical condensers
IPC: H01G4/228
Filed: 1934-01-01
Abstract: 413,746. Condensers. TELEGRAPH CONDENSER CO., Ltd., and SPORING, P. A., Wales Farm Road, North Acton, London. Jan. 1, 1934, No. 37036/32. [Class 38 (ii).] An electrical condenser of the rolled type, having a casing formedby rolling strip insulating material on the condenser, is provided with metal fittings on the casing with each of which flexible connections, such as wire, make contact to one of the condenser plates and to the external circuit. As shown in Fig. 1, eyelets 8 are soldered to wires 7 connecting to the plates 4. In a modification, Fig. 2, end-caps 9 of metal, to which external connections 7 may be soldered, clamp wires 10 between themselves and the casing 5.
Patent GB-791876-A (GB)
Title: Improvements in or relating to indicating instruments
IPC: G01P5/175
Filed: 1955-12-29
Abstract: 791,876. Indicating-apparatus; pressure gauges. BENDIX AVIATION CORPORATION. Dec. 29, 1955 [Jan. 3, 1955], No. 37304/55. Classes 106 (2) and 106 (4). Indicating-apparatus has mechanism for deriving an output motion which is a desired function of two input factors comprising two capsules 17, 16 sensing the factors and acting jointly on a common link 39 having two degrees of freedom for movement along two different directions in response to the capsules and a cam 52 transmitting the motion of the link 39 to an output shaft 45, the cam 52 being so shaped as to impart to the shaft 45 a motion which is the desired function of the inputs. As shown in a Machmeter, Fig. 2, a cam link 39 moves under the influence of two capsules 17, 16, one an evacuated capsule 17 exposed to static pressure, acting through a link 19, pivoted to an arm 25 on a rock-shaft 21 with another arm 32 connected to the link 39 by a spring 43, and the other exposed internally to impart pressure and externally to static pressure and acting through a pin 37 pivoted to the link 39. The link 39 is urged into contact with a cam wire 52 through which it rocks a shaft 45 and rotates a pointer 14 through sector 53 and pinion 55. The transmission ratios may be adjusted by changing the effective lengths of the pin 38 where it is clamped by screw 61 and of the arm 25 where it is clamped by screw 60 and also by a fine adjustment screw 31 in a split block 24. The effect of the spring 43 may be varied by adjusting the collar 33. The cam 52 is formed of spring wire secured directly to the shaft 45 or to a collar rotatably adjustable on the shaft 45 and its other end bears on a cam pin 51 secured to a cam arm 48 secured on the shaft 45 in a desired angular position to give the cam 52 an appropriate shape. The cam link 39 is given a curvature suitable to the particular capsules used and the appropriate curves are blended at the transonic interval.
Patent GB-363812-A (GB)
Title: Improvements in or relating to gas-producers for generating continuously a gas mixture for ammonia synthesis
IPC: C01B3/02
Filed: 1930-12-11
Abstract: 363,812. Gas generators. KOLLER, K., 27, Pomanicky-Ucca, and LENGYEL, M., 25, Sas-Ucca, both in Budapest. Dec. 11, 1930, No. 37424. [Class 55 (i).] In the production of a mixture cf hydrogen and nitrogen for ammonia synthesis ir a gas-producer having a superimposed retort in which the coal ir the retort is distilled by hot inert gases at a temperature of 700 1000‹ C. from an external source, the coke residue in the producer is blasted with a regu lated air-steam mix ture preliminarily heated to a tempera ture of 300-700‹ C. The distillation and the gasefication are carried out in the retort and producer respectively separately from one another and under increased pressure. Inert gas is introduced into the retort A through an annular duct b. The coke residue is blasted in the producer C with the gaseous mixture introduced through a pipe d below the grate f. The mixture of gases is drawn off through the off-take e. The distillation gases are taken off separately through off-take c. The pressures in the retort and producer are controlled by means of a manometer g: In an example, 2À7 to 4À8 kilograms of steam are used for each cubic metre of air in the blast. Specification 142,874, [Class 55 (i), Coking &c.], is referred to.
Patent GB-793651-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/00
Filed: 1955-12-30
Abstract: 793,651. Optical objectives. COOK. G H. MERIGOLD, P. A., and TAYLOR, TAYLOR & HOBSON, Ltd. Dec. 7, 1956 [Dec. 30, 1955], No. 37440/55. Class 97(1) An objective corrected with respect to a stop position which lies within 0.2F of its front focal point, where F is the focal length of the objective, and which has an overall axial length between 0.85F and 1.5F is formed of a front member comprising a simple collective component located in front of a compound meniscus dispersive component and a rear member having an equivalent focal length f between 0.4 and 0.7 times the said axial length and formed of a pair of axially spaced simple collective components located to the rear of a compound dispersive meniscus components, the two dispersive meniscus components having their air-exposed surfaces concave, towards one another and the rear surface of the rear dispersive meniscus component having a radius of curvature between 0.7f and 1.1f. The objective, intended particularly for projection, may be telecentrically corrected, the stop being located at the front focal plane. Numerical data are given for one example of the objective shown.
Patent GB-326820-A (GB)
Title: Method of casting magnesium or magnesium alloys
IPC: B22D21/00
Filed: 1928-12-19
Abstract: 326,820. I. G. Farbenindustrie Akt.- Ges., and Mond, A. L. Dec. 19, 1928. Addition to 187,943 and 219,753. Mould and core materials.-Oxidation of magnesium in casting is prevented by adding to the moulding sand, instead of or in addition to one or more of the protective substances referred to in the parent Specifications, a fluoride which is not hygroscopic or is kept stable, in the presence of heat and moisture, by the addition of another substance. The sand may be mixed with 3 to 5 per cent of ammonium hydrogen fluoride or ammonium silico fluoride the mixture being stored for some time, in the latter case, before use ; or 5 per cent of ammonium fluoride mav be used with 3 per cent of oxalic acid to absorb any decomposition products. This material on coming into contact with the molten metal produces a non-oxidizing gas which forms a protective layer on the casting, as described in Specification 254,302, [Class 82 (ii), Washing granular &c.]. For small castings up to 15 per cent of one of the above substances may be used without other protective substance.
Patent GB-1396741-A (GB)
Title: Double-acting hydraulic press
IPC: F16J10/00
Filed: 1972-08-11
Abstract: 1396741 Double-acting hydraulic press PRZEDSIEBIORSTWO DOSWIADCZALNE PRAS AUTOMATYCZNYCH I TLOCZNIKOW "PONAR-HYDOMAT" 11 Aug 1972 [16 Aug 1971] 37525/72 Heading B5F An hydraulic press has upper and lower cylinder and plunger assemblies 5, 6; 8, 9 for moving a platen 3 between upper and lower working zones whereat it co-operates with upper and lower inner surfaces of a casing 1 which is formed as an integral unit. Each cylinder 5, 8 is mounted on the casing 1 and each plunger 6, 9 co-operates with a respective plate 11, 17 which is connected to the platen 3 through respective elastic bars 14, 16 and columns 2 slidably mounted in the casing 1. The stroke of the press is varied by a ring gear 7, 10 rotatable by an associated worm gear 13 and screw-threaded on each cyliner 5, 8 for co-operation with a respective plate 11, 17.