baber/WOPTO huggingface dataset:
Patent GB-355083-A (GB)
Title: Improvements in or relating to nickel chromium alloys
IPC: C22C19/05
Filed: 1930-09-29
Abstract: Up to 2 per cent of silicon is added to nickel-chromium alloys which are made by melting in hydrogen, the silicon being preferably added to the materials from which the alloy is prepared, and melted with them.  The alloys may also contain other metals such as tungsten and molybdenum.  Specification 293,727, [Class 82 (i), Metals, Extracting &c.], is referred to.
Patent GB-1070395-A (GB)
Title: Circuit arrangement with an image-converter tube or image-amplifying tube
IPC: H01J31/50
Filed: 1964-07-15
Abstract: 1,070,395. Image converter tubes. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. July 15, 1964 [July 15, 1963], No. 29089/64. Heading H1D. A circuit arrangement comprises an imageconverter tube or image-amplifying tube which has at least one first 2 and one second 3 focusing electrode, seen in the direction of the electrons, between the cathode electrode 1 connected to the photo-cathode 5 and the anode electrode 4 connected to the luminescent screen 6, and the two focusing electrodes 2, 3 are connected to potential sources which can be adjusted or switched over for the purpose of varying the reproduction scale. The potential on the first focusing electrode is not higher than that on the two electrodes adjacent to it and is made increasingly negative, relative thereto, in order to increase the scale of the image on the screen. It is stated that potentials on electrodes 1, 2, 3, 4 of 0, 0, 0, # 4 kv. respectively give a reproduction scale of 0.4 to 1, and potentials of 0, - 3.3, + 4, + 4 kv. respectively give a reproduction scale of 1 to 1.
Patent GB-654350-A (GB)
Title: Collection of carbon black
IPC: C09C1/48
Filed: 1948-11-09
Abstract: Carbon black entrained in a stream of hot gases from a carbon black furnace is collected by passing the gas stream through a dry collecting zone for separating dry black, and a wet collecting zone for separating residual black in contact with water, and injecting the slurry of black from the wet collecting zone into the gases in a cooling zone at any point between the furnace and the downstream end of the dry collecting zone.  Furnace gases at 2000-2500 DEG  F. pass to a spray cooler wherein they are sprayed with insufficient water to cause saturation.  The cooled gases at a temperature above the dew point, e.g. 300-600 DEG  F. pass to an electrical precipitator and carbon black is removed by further passage through a battery of cyclone separators.  A fan then pumps the gases at 250-500 DEG  F. to a combined scrubber and wet precipitator whence exhaust gases go to waste and a slurry of carbon black passes to a settling tank.  The slurry is concentrated into two fractions, the dilute fraction is returned to the scrubber-precipitator as wash water, while the concentrated fraction, after addition of a dispersing agent, e.g. the sodium salt of alkylnaphthalene sulphuric acid or Turkey red oil, is sprayed into the spray cooler to re-suspend the black in the gases. Alternatively some of the slurry may be sprayed into a separate chamber or independently flash dried.  The spray cooler may include atmospheric cooling flues.
Patent GB-758822-A (GB)
Title: Improvements relating to the removal of hydrogen sulphide from petroleum hydrocarbons
IPC: C10G31/00
Filed: 1952-11-18
Abstract: Hydrogen sulphide is removed from petroleum hydrocarbons, which are required to pass the B.S.I. corrosion test and which include compounds that react with hydrogen sulphide at elevated temperature to form mercaptans, by passing through the hydrocarbons at a temperature below 100 DEG C., a gas containing no hydrogen sulphide, oxygen, or oxygen compounds reactive with hydrogen sulphide; formation of mercaptans is thereby avoided. The bulk of the hydrogen sulphide may be first removed from the petroleum hydrocarbons.  The gas may be the excess hydrogen, freed of hydrogen sulphide, produced in a hydrodesulphurization process. In an example, a petroleum fraction of 140-200 DEG C. boiling range is autofined and freed of hydrogen sulphide by stripping in the cold with a stream of nitrogen.
Patent GB-364054-A (GB)
Title: Improvements in or relating to cycle frames
IPC: B62K25/04
Filed: 1930-09-29
Abstract: 364,054. Cycle spring frames. SCHMIRL, H., 123¢, Pferdemarkt, Deggendorf, Germany, SUITNER, H., 3, Furstenbrunnstrasse, Salzburg, Austria, and TOURING-ELASTIC GES. ; 9, Pettenkoferstrasse, Munich, Germany. Sept. 29, 1930, No. 29134. [Class 136 (iii).] In a spring frame for cycles, of the type composed of front and rear sections pivoted together at or adjacent to the crank bracket 8, the rear end of the top bar 1 of the front section 1, 2, 3 is shaped to the form of an arc concentric with the pivot 12, and telescopes within a corresponding arcuate guide 7 carried by the seat tube 4, under the control of a compression spring within the guide 7. The spring may be of volute form, and is adjusted by means of a screw 23. The pin of the pivot 12 passes through a forked member 9 on the crank bracket 8, and an eye on the member 3, and is removable, so that the two parts of the frame can be readily separated for transport &c. A ball &c. bearing may be incorporated at the pivot. The rear end of the top tube 1 may be bifurcated, the guide 7 being then of corresponding twin formation.
Patent GB-1496982-A (GB)
Title: Battery charger
IPC: H02J7/00
Filed: 1976-07-12
Abstract: 1496982 Charging batteries CARDIAC RECORDERS Ltd 12 July 1976 [11 July 1975] 29275/75 Heading H2H A method of charging a rechargeable nickel-cadmium battery comprises charging the battery at a high rate for a predetermined period of time during which the total energy supplied to the battery is approximately half the total charge capacity of the battery, and then charging the battery at a low rate. The battery, which supplies a cardiac defibrillator, is connected to terminals 13 when the defibrillator is plugged into the charger. A magnet (14), Fig. 2 (not shown), in the defibrillator closes a reed switch SW1A, SW1B in the charger to connect a mains supply to the charger. Current is supplied to the battery via a transistor TR1 which limits the maximum open circuit voltage and a transistor TR2 of a constant current circuit. A timer, which includes a resistor R3, a capacitor C4 and a frequency divider IC, switches on a transistor TR3 after the predetermined period of three hours has elapsed, thereby connecting resistors R7, R8 in parallel and reducing the charging current.
Patent GB-468601-A (GB)
Title: Improvements in and relating to electric transformers
IPC: H01F38/30
Filed: 1936-10-28
Abstract: 468,601. Current transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 28, 1936, No. 29323. Convention date, Oct. 29, 1935. [Class 38 (ii)] A current transformer is mounted on a moulded insulating bed-plate 6 shaped so that the core 4 rests with its broad side on the upper surface of the bed plate and is secured thereto by bolts 15 moulded into the bed plate. Bolts 7, 8 also moulded into the bed plate serve as terminals for the primary winding 9 which is in the form of a strip surrounding the secondary 10.
Patent GB-1433016-A (GB)
Title: Coin operated gaming apparatus
IPC: G07F17/34
Filed: 1973-06-21
Abstract: 1433016 Gaming apparatus NSM-APPARATEBAU GmbH KG 21 June 1973 [27 June 1972] 29445/73 Heading G4V A coin-operated gaming machine comprises symbol carrying rotatable bodies 1 having bores 3 parallel to their axes, light source means 5 and light receiving means 7 co-operating with said bores, said receiving means being connected to means 8 for evaluating the stopping positions of said bodies, and a pay-out unit 10 connected to said evaluating means. In the embodiment shown, where the bodies are coaxial the light source and receiver are located at opposite ends of the set of bodies and are displaceable in a direction transverse to the axis. In other embodiments (Figs. 2 and 3, not shown) the bodies rotate in a common plane with the light being conducted between the source and receiver by means of the bores 3 and light conducting filaments (11), or with a respective light source and receiver being provided for each body.
Patent GB-722406-A (GB)
Title: Wave-guide switching arrangements
Inventor: SCOTT WILLIAM JOSEPH
IPC: H01J17/04
Filed: 1950-12-04
Abstract: 722,406. High-frequency discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 20, 1951 [Dec. 4, 1950], No. 29621/50. Drawings to Specification. Class 39 (1). In a waveguide switching tube, comprising an elongated sealed electrodeless dielectric envelope containing a low pressure gas and/or vapour and adapted to be inserted in a waveguide and to have its contents ionized by energy having a certain minimum level, the striking power is reduced without inconveniently increasing the recovery time or the loss in the discharge by making the internal cross-section of the tube envelope non- circular, thereby substantially increasing the ratio of the internal wall periphery to the internal crosssectional area. For a fused silica tube envelope an elongated section such as a rectangle or ellipse having axes differing by more than 2:1 is preferred or the section may be in the form of two rectangles arranged at right angles to form a cross. If a ceramic tube envelope is used the section may be made more complicated for example a star shape, or the internal wall of the envelope may be provided with a helical groove. The ceramic tube envelope may be extruded and fitted with glass ends, one of which forms a reservoir 'for the gas filling and has a tip for evacuating and filling the tube. Suitable filling gases are argon, krypton, xenon and hydrogen, singly or in combination. If water vapour is also included a catalyst of the platinum group may be included in the tube in a position so as not to be influenced by the signals. Where the section is an irregular figure the optimum effect may be obtained when the section is orientated in a particular direction relative to the direction of polarization of the wave energy in the guide. The orientation may be secured by specially shaping the external cross-section of the tube envelope to engage a correspondingly shaped holder in the waveguide, or a specially shaped metal end cap may be provided on the tube to engage a correspondingly shaped projecting boss on the waveguide wall.
Patent GB-287603-A (GB)
Title: Improvements in and connected with lifting jacks
IPC: B66F13/00
Filed: 1926-11-23
Abstract: 287,603. Salsbury, H. P. Nov. 23, 1926. Jacks. -Lifting-jacks are positioned under a vehicle by providing them with a crutch which is formed or fitted with parts adapted to slide in guides formed in or fitted to a spring pad or other abutment attached to the vehicle, The spring b is fitted with a jack pad or plate a spread from the spring by a wedge block e and fitted with side flanges c with inturned ends, forming a guideway for rollers h on the crutch i. The crutch may have rounded ends adapted to slide in the guideway. The pad mav be clamped to the axle or other part of the vehicle. The crutch k, Fig. 7<a>, may have horns k<1> adapted to engage a flat or crescent shaped pad or may be fitted with a detachable block l, Fig. 9, having flanges m<3> for engaging the crutch and flanges m<2> for engaging the guide on the vehicle.
Patent GB-285977-A (GB)
Title: Improvements in or relating to colour screen films
IPC: G03C7/08
Filed: 1926-11-23
Abstract: 285,977. Ruth, R., and Aktiebolaget Sveriges Litografiska Tryckerier. Nov. 23, 1926. Colour photography, screen films for.-In making a colour-screen film with screen particles having the same optical and physical qualities as the film base, the film base is first superficially softened on one surface only, as by a rapidly evaporating liquid applied by rollers; the screen powder is then spread over this surface in a single layer, as by a number of cylindrical brushes rotated in a direction opposite to the direction of movement of the film, the film being thereafter subjected to a blower or suction fan to remove non-adhering particles; and the film is then passed between pressure rollers of which only the roller acting on the screen grains is heated.
Patent GB-1580142-A (GB)
Title: Process for staking soil
IPC: E02D17/20
Filed: 1977-07-14
Abstract: Steel reinforcing rods are driven in a grid-shaped formation into the soil layers to be nailed, the rods being placed at angles which correspond to the existing stress directions of the soil. An adhesive bond can be obtained if the reinforcing rods are ribbed to increase the skin friction and are grouted with cement over their entire length.
Patent GB-226214-A (GB)
Title: Improvements in weighing apparatus
IPC: G01G1/26
Filed: 1924-12-11
Abstract: 226,214. Berkel, C. F. M. van. Dec. 11, 1923, [Convention date]. Loose-weight apparatus. - Relates to means for increasing the capacity of an automatic or semi-automatic weighing-scale of the type, comprising a plurality of separate sets of weights and operating-mechanisms, and consists in that both or all of the operating-mechanisms actuate a single recording or indicating device in accordance with the change produced in the weighing- capacity of the scale. As shown in Fig. 1, a weigh-beam 12 is pivoted on knife-edges 8 and is provided with load pivots 6. Situated at one side of the weigh-beam are four plate-shaped weights 37 pivoted at one end on a common knife-edge in alignment with the knife-edges 8. At their free ends the weights 37 are adapted to bear in recesses 49 in a cranked extension 15 of the weigh-beam, into which position they are lowered by levers arranged beneath the weights. The levers are pivoted on a bolt 19 and are actuated individually by a cam-member 27 geared to a hand-operated shaft 18. Situated at the other side of the beam is a larger weight 46 mounted similarly to the weights 37 and controlled by a cam 43 mounted on a hand-operated shaft 19. A finger 20, Fig. 4, mounted on the shaft 18 is adapted to engage a pinion 22 meshing with a rack-bar 49 connected to the indicating or recording mechanism. A toothed sector 42 mounted on the shaft 19 is also adapted to engage with the pinion 22, the movement of the rack-bar for one revolution of the shaft 19 being five times that caused by one revolution of the shaft 18. In a modification, Fig. 6, the finger 58 and sector 59 engage the rack-bar directly, and a vertically-movable plate 62 is mounted on the bar to prevent the simultaneous rotation of the shafts 18, 19.
Patent GB-792693-A (GB)
Title: Improvements in or relating to dispatch-carriers for use with a dispatch-conveyor tube installation
IPC: B65G51/42
Filed: 1956-10-01
Abstract: 792,693. Carriers for pneumatic despatch apparatus. SIEMENS & HALSKE AKT.-GES. Oct. 1, 1956 [Sept. 30, 1955], No. 29813/56. Class 78 (1). The tubular carrier body 1 is made of insulating material and is surrounded by a metal sleeve 2. A fixed contact ring 4 bears against an end stop 3 and is spaced by a sleeve 5 of insulating material from a set E<SP>1</SP> of rings. This set consists of contact rings 7, 8, 9 and rings 10 ... 13 of insulating material. A similar set of rings E<SP>2</SP> is placed between the set El and the end of the carrier. In each set a contact ring is held by two insulating rings which are separated by a gap and have recesses cut in them. When assembled the recesses form apertures 19, 20, 21, Fig. 2, and leaf springs 22 are inserted in them. Each spring bears against a contact ring and also couples mechanically adjacent insulating rings. The end ring 13 has recesses 14 formed in it which are engaged by balls 16, Fig. 8, mounted in a cage 15. A rubber ring 17 is mounted in the cage 15 and a screw 6, which is passed through it and the cage, secures them to the body 1. The metal sleeve 2 has apertures 23, Fig. 5, which provide eight different switching conditions of the contact ring switch.
Patent GB-398663-A (GB)
Title: Improvements in hones for sharpening razor blades
IPC: B24D15/08
Filed: 1932-10-25
Abstract: A hone is composed of an alloy comprising 95 per cent of lead and 5 per cent of tin.
Patent GB-694979-A (GB)
Title: Improved device for attaching stop members to stringers in the manufacture of sliding clasp fasteners
Inventor: CUCKSON ERIC ENGEL
IPC: A44B19/60
Filed: 1950-12-06
Abstract: 694,979. Making sliding clasp fasteners. FLEX FASTENERS, Ltd. Dec. 3, 1951 [Dec. 6, 1950], No. 29836/50. Classes 83 (ii) and 83 (iv). [Also in Group XXV] Angular bending. -Fig. 2 shows a sectional view of a machine in which bottom stopmembers for sliding clasp fasteners are formed by severing and bending from strip 23 and applied to the fastener tapes which are drawn through a guide channel 12 in which a yielding abutment 16 engages the end face of the foremost element to locate it at a predetermined position while the stop-member is being clinched to the tapes. The moving parts of the machine are driven, e.g. by an electric motor, through a belt pulley 26 which may be connected to the driving shaft 20 of the machine by a one-revolution coupling 39 controlled by a pedal. The tape guide channel is covered by an anvil plate 13 formed with a shaped recess 14. The strip 23 is advanced in steps by an oscillating carriage 24 driven by a rocker 31 having a ball-head 33 engaged in a cam-slot formed in a wheel 30. As the wheel makes one revolution the carriage moves once forwards and backwards. A spring loaded pawl 28 on the carriage engages and advances the strip as the carriage moves forward and a fixed pawl 27 retains it as the carriage returns. As shown in Figs. 3, 5 and 6 the strip passes through a guide block 22 towards punches 15, 36, 37 which are initially level but are raised by eccentrics and connecting-rods 38. The end of the strip is first severed by punch 35 which also bends up the end of the severed portion against the side of a forming block 36. At the same time an auxiliary punch 37, connected to move with the punch 35, bends up the other end against the other side of the block 36. The block 36 is then withdrawn sideways and the three punches rise together to lift the end stop 8 against the tapes as shown in Fig. 5. The main punch 15 then rises to the same level as punches 35, 37 to cause the legs of the stop to pierce the tapes, engage the anvil recess 14 and be turned over thereby as shown in Fig. 6. The abutment 16 is lifted out of the channel at the same time. Alternatively, the one stroke coupling may be actuated by a relay energized by current passing through the abutment 16 and the united rows of fastener elements.
Patent GB-1241136-A (GB)
Title: New dioxazines and process for their manufacture
IPC: C09B19/02
Filed: 1969-06-12
Abstract: 1,241,136. 2 - Nitro - 3,6 - dibromobenzoquinone. CIBA-GEIGY Ltd. 12 June, 1969 [12 June, 1968], No. 29844/69. Heading C2C. [Also in Division C4] In Example 5, 2-nitro-3,6-dibromobenzoquinone is prepared by reacting 2,5-dibromohydroquinone with 100% nitric acid at room temperature, pouring the reaction mixture on to ice, filtering, washing and drying, and finally recrystallizing the product from hexane m.p. 127-129 C.
Patent GB-1117593-A (GB)
Title: Selectors with light control
IPC: H03K17/70
Filed: 1965-07-14
Abstract: 1,117,593. Automatic exchange systems; breakdown gating circuits. R. V. RELSTED 14 July, 1965 [15 July, 1964], No. 29960/65. Headings H3T and H4K. [Also in Division G1] In an automatic exchange system wherein the switching network comprises cascaded stages of matrices of bi-stable light-sensitive semiconductor elements (e.g. pnpn photo diodes or photo thyristors), cross-points are selected by a pulse of light and the cross-points then hold without further illumination of the elements. The speed path may be of the 1 or 2 wire type (Figs. 1, 2, not shown). With m inlets and n outlets, pulse activation may be by m, n light emitters, or by m+n light emitters by simultaneous activation of two such emitters. Alternatively, m emitters only, one for each inlet, may be used by using an inductance L at each outlet, and by suitable electrical dimensioning of the outlets. Alternatively, n emitters only, one for each outlet, may be used. Where there is free hunting over n outlets, one common light emitter connected by light conductors to all the elements is sufficient. Five matrices G1 . . . G5 (Fig. 3) of two wire type have current sources E1, E2 together with coils L1, L2, L3, L4. Capacitors C1, C2 permit transmission of speech. In matrices G11, G12 (Fig. 4), fifty subscribers have access to ten outlets. Matrix G2 has twenty inlets connected to the 2 x 10 outlets of matrices G11, G12, and twenty outlets of which six conduct to matrix G3, which may have thirty inlets (not shown) and twenty-four outlets connected to toll lines. A common light emitter may be sufficient for the matrices G11, G12, G2 and for the six inlets of matrix G3 or, if desired, for the twenty-four outlets of matrix G3.
Patent GB-706522-A (GB)
Title: Production of organic acid esters of cellulose
IPC: C08B1/02
Filed: 1951-12-21
Abstract: Cellulose containing less than 5 per cent. of its weight of water is subjected to pretreatment in two stages, and then to esterification with an organic acid anhydride, the first pretreatment stage being effected with a lower aliphatic acid in the presence of 4-9 per cent. of water (calculated on the dry weight of the cellulose and including water already contained in the cellulose) for a time of at least 2 minutes, and the second pretreatment stage being effected with further lower aliphatic acid containing 3-15 per cent. (calculated on the dry weight of the cellulose) of an esterification catalyst for a time of at most 15 minutes.  The lower aliphatic acid is one containing 1-4 carbon atoms in the molecule.  The cellulose may be purified cotton linters or wood pulp or it may be derived from bamboo, reeds, grasses, straws, jute, esparto, seed hulls or bark. It may be pretreated in the form of loose fibres or in sheet, strip or board form.  Formic, acetic, propionic or n-butyric acid or a mixture of these may be used for the pre-treatment.  The first stage of pretreatment may be carried out at 25-55 DEG C. and the amount of lower aliphatic acid may be 15-75 per cent. of the weight of the cellulose.  In the second stage of pretreatment the amount of aliphatic acid may be 1-6 times the weight of the cellulose.  The esterification catalyst used is preferably sulphuric acid.  After the pretreatment, the cellulose is esterified with an organic anhydride, with or without additional quantities of lower aliphatic acid and catalyst.  The esterification may be carried out in 15-30 minutes or less.  In an example, cotton linters which have been dried until they contain 0.3 per cent. by weight of water are treated by spraying with 35 per cent. of acetic acid containing 6 per cent. of water, based on the weight of the cellulose, and allowed to stand for 3 minutes. They are then sprayed with 300 per cent. of acetic acid containing 15 per cent. of sulphuric acid, based on the weight of cellulose.  After 3 minutes, the cellulose is introduced into 220 per cent. of acetic anhydride and the esterification proceeds to completion in 15 minutes.  Specification 683,648 is referred to.