baber/WOPTO huggingface dataset:
Patent GB-557320-A (GB)
Title: Improvements in fluid-actuated remote control systems
IPC: B64C13/00
Filed: 1942-02-12
Abstract: 557,320. Telemotors. GENERAL AIRCRAFT, Ltd., and LISLE, W. G. Feb. 12, 1942, No. 1899. [Class 69 (ii)] [Also in Group XXXIII] A hydraulic remote control system for actuating flaps or other control surfaces or the retractable undercarriages of aircraft comprises master and slave cylinders interconnected by conduits, a relief valve being provided to allow yield of the slave cylinder plungers under excessive load, and a compensator being provided to recoup the cavitation produced in the master cylinders when the plungers of the master cylinders are returned to their original extreme position. As shown, two master cylinders 4, 5 are connected to two slave cylinders 11, 14 by conduits 12, 13 and return conduits 15, 16. The conduits 12, 13 are connected by a pipe 17 communicating through a spring loaded valve 19 to an accumulator 20 having a floating piston 23 loaded by a spring or a compressed air cushion 22. Branch pipes 24, 29 connect the conduits 15, 16 through similarly loaded valves 25, 28 to the accumulator which is connected also through a pipe 27 and pipe 32 to ports 30, 31 in the cylinders 4, 5. The plungers 9, 10 of the cylinders 4, 5 just clear the ports 30, 31 at the end of each stroke so that any deficiency of fluid can be made good from the accumulator. Normally, depression of the plungers 9, 10 causes a corresponding displacement of plungers 33, 34 connected to the flaps 37, 38. Should an excessive pressure act upon the flaps the plungers 33, 34 are forced in and fluid is displaced through the valve 19 to the accumulator, the spaces in front of the plungers being refilled through the conduits 27, 32, ports 30, 31. now open behind the plungers 9, 10 and conduits 15, 16. Upon returning the plungers 9, 10 to their initial position the plungers 33, 34 complete their stroke first and continued movement of the master plungers displaces excess fluid through the valves 25. 28 and causes cavitation in the forward parts of the cylinders 4. S. This cavitation is made good from the accumulator as soon as the ports 30, 31 are again uncovered. Preferably the fluid displacement in the master cylinders is normally greater than that in the slave cylinders, the excess fluid at each stroke being displaced through the valve 19 or the valves 25, 28, and the cavitation on the opposite sides of the heads 9, 10 being made good from the accumulator through the ports 30, 31 at the end of each stroke. A single master cylinder may control a number of slave cylinders, and, if rotational movement is required the jacks may be replaced by small motors.
Patent GB-691297-A (GB)
Title: Improvements in electric discharge lamps
IPC: H01J61/52
Filed: 1949-01-25
Abstract: 691,297. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd., DAVIES, L. J., and BEESON, E. J. G. Jan 12, 1950 [Jan. 25, 1949], No. 2035/49. Class 39(i). The anode of an electric discharge lamp of the compact source type comprises an outer sheath 1 of a highly refractory metal of relatively low thermal conductivity such as tungsten or molyb denum, over a core 2 no exposed to the discharge which is of a metal of lower melting point but higher thermal conductivity, such as copper. The sheath may be extended to form a lead in conductor, and the core further extended to form a terminal 3 and carry radiating fins 4. According to the Provisional Specification, the copper core may also have a cavity for cooling fluid. Specification 555,344 is referred to.
Patent GB-299238-A (GB)
Title: Improvements relating to artificial teeth
IPC: A61C13/24
Filed: 1928-01-23
Abstract: 299,238. Roe, M. M. Jan. 23, 1928. Teeth, artificial.-Suction cavities in an upper or lower denture are formed by making depressions b, c in the usual plastic impression a of the jaw by means of dies, so that corresponding integral projections are formed on the plaster model made from said impression. These projections are trimmed, and undercut if desired, and serve to form vacuum chambers in the vulcanite denture. The dies may be of circular or other outline and comprise male portions n carried on bases m having integral or detachable handles p, r.
Patent GB-1075325-A (GB)
Title: An electrophonic musical instrument
IPC: G10H1/32
Filed: 1966-01-17
Abstract: 1,075,325. Electrophonic instruments. JOH. MUSTAD AB. Jan. 17, 1966 [Feb. 16, 1965], No. 2120/66. Heading G5J. An electric instrument carried in a shoulder belt 2 has a manual 4, mounted on a chassis, which is .housed inside a tube 1 provided with a longitudinal opening through which the manual is reached. The manual chassis, Fig. 8 (not shown), comprises a number of parallel rails between two cross-pieces which are screwed to the tube. A tone selector having push-button switches 7 and mounted on a chassis having two angle sheets between two cross-pieces, Fig. 7 (not shown), may be similarly housed in another part of the tube so that it can be operated by the hand not playing the manual. A printed circuit board for the electric couplings may be housed near the tone selector, Fig. 4 (not shown), which may incorporate volume and tuning controls.
Patent GB-687692-A (GB)
Title: Improvements in detachable connections between a spindle and a push-on handle
Inventor: DOENGES HANS
IPC: F16D7/02
Filed: 1951-01-27
Abstract: 687,692. Securing articles to shafts. VAILLANT, H., [trading as VAILLANT KOMMANDIT-GES., J.]. Jan. 27, 1951, No. 3130/51. Class 80 (ii). A spindle 5 (e.g. a valve spindle) has its end formed as a double cone 3, 6 for the detachable connection of a push-on handle 1. The conical surface 6 is engaged by the limbs of a U-shaped spring 7 mounted in the handle, the spring serving to tighten the cone 3 into a corresponding cone 4 in the handle. The cones 3, 4 have interengaging teeth. In an alternative embodiment, Fig. 2 (not shown), the cone 3 has flats formed thereon which engage a square pyramidal hole in the handle. In a further embodiment, Fig. 3 (not shown), the cones 3, 4 engage frictionally and may slip on application of an excessive torque to the handle. The slipping torque may be adjusted by inserting springs 7 of differing power.
Patent GB-1160505-A (GB)
Title: Improvements in DPN Salts and Methods of Preparation.
IPC: A61K31/70
Filed: 1968-01-15
Abstract: 1,160,505. Diphosphopyridine nucleotide salts. ENZOMEDIC LABORATORIES Inc. 15 Jan., 1968 [2 March, 1967], No. 2137/68. Heading C2C. Novel sodium, potassium, calcium, ammonium, zinc, magnesium and manganese salts of diphosphopyridine nucleotide (nicotinamide dinucleotide) are obtained by reacting diphosphopyridine nucleotide with the appropriate metal or ammonium oxides, hydroxides, carbonates or phosphates in aqueous media, at or below room temperature, adjusting the pH to 7, diluting the reaction media with a hydrophilic organic solvents, e.g. methanol, ethanol or acetone, and separating the solid salts produced. Therapeutic compositions useful in the treatment of drug addiction or alcoholism contain the above salts as active ingredients. The compositions may be in the form of isotonic aqueous solutions suitable for injection.
Patent GB-1046652-A (GB)
Title: Apparatus for electrostatic precipitation
IPC: B03C3/38
Filed: 1964-01-17
Abstract: In the electrostatic precipitator of the parent Specification the flame charging stage is modified by the provision of baffle plates ahead of the high temperature region so as to increase the chance of collision between ions and entrained particles.
Patent GB-787514-A (GB)
Title: Improvements in or relating to machines of the kind which can be used as drag-line excavators, cranes or shovels
Inventor: JONES CHARLES
IPC: E02F9/20
Filed: 1955-01-25
Abstract: 787,514. Earth excavating apparatus. JONES OF ALDRIDGE, Ltd., C. July 11, 1955 [Jan. 25, 1955], No. 2157/55. Class 68(1) [Also in Group XXX] In an earth-excavating apparatus that can be converted for use as drag line excavator, crowd shovel, or crane there is provided means whereby positive raising and lowering of the boom when the excavator is used as a crane can be effected through the medium of a control mechanism that can be used to control the movements of a crowd shovel when the excavator is adapted for such a use. Three winch drums 14, 17 and 22 are provided, drum 14 for a boom hoist cable, drum 22 for a hook, shovel or scoop hoist cable, drum 17 for a scoop or shovel pull cable. Drum 22 can be coupled by clutch 23 to a driven shaft 21 and is always coupled by chain and sprocket drive 25, 26, 27 to drum 17, which can be idle on a driven shaft 10, be coupled to said shaft by clutch 19, or be coupled to drum 14 by clutch 15, 16. The drum 14 can be selectively coupled by clutch 9 to shaft 10, which rotates in the opposite direction to shaft 21.
Patent GB-637044-A (GB)
Title: Connecting member between a main pipe and at least one nest of tubes consisting of a number of smaller pipes
IPC: F16L41/03
Filed: 1948-01-26
Abstract: 637,044. Tubular heat-exchangers. AKT.- GES. FUR TECHNISCHE STUDIEN. Jan. 26, 1948, No. 2291. Convention date, Jan. 25, 1947. [Class 64(iii)] [Also in Group XXVIII] An assembly for use in heat exchangers etc. comprises a main 1 and a number of tubes 5 connected to the main by means of an adapter which tapers away from the main, the tubes being attached to its tapering wall. The adapter has a cylindrical part 2' and a conical part 2 which are joined by a part 4 having a radius of curvature # equal to the diameter of the main. The cone angle # does not exceed 90 degrees. The tubes 5 are attached to the part 2 at points 6 lying on concentric circles. In a modification, Fig. 3 (not shown), the adapter is formed integral with the main and connected to it by a part having a radius of curvature at least three times as large as the radius of the main.
Patent GB-1262842-A (GB)
Title: Food additives and process therefor
IPC: A23L27/60
Filed: 1970-01-16
Abstract: 1,262,842. Starch and sweetening substitutes. PFIZER Inc. 16 Jan., 1970 [22 Jan., 1969], No. 2343/70. Addition to 1,182,961. Heading A2B. [Also in Divisions C3 and C6] The process of preparing higher polysaccharides and polysaccharide derivatives of glucose and maltose described and claimed in the Parent Specification is improved or modified by including in the glucose-or maltosecatalyst mixture, prior to the polymerisation, from 5 to 20% by weight of a food-acceptable polyol, exemplified by erythritol, galactitol, glycerol, mannitol, sorbitol and xylitol. The polyol is stated to be chemically incorporated in the polymer and to function inter alia as a plasticizer to reduce viscosity. The examples are generally similar to those disclosed in the Parent Specification, except that a formulation for a low calorie gelatin dessert is also given.
Patent GB-1535554-A (GB)
Title: Separating drum
IPC: B04B1/14
Filed: 1976-01-21
Abstract: 1535554 Centrifugal separator WESTFALIA SEPARATOR AG 21 Jan 1976 [1 Feb 1975] 02400/76 Heading B2P In a centrifuge drum for centrifuging a solids-containing mixture of two liquids and comprising a first-stage separating chamber 9, in which substantial separation of the lighter liquid and of the solids from the heavier liquid takes place, and a secondstage separating chamber 12, in which the heavier liquid undergoes recentrifuging, the chamber 12 which includes a plurality of conical separating discs is arranged radially outside the chamber 9 and is in communication with a concentrated solids chamber 10 via openings 19 in an annular weir 11 and with a heavier-liquid discharge channel 21 via a passage 21 formed between a cover portion 2 of the drum and an annular member 8. The mixture to be centrifuged is supplied to the drum via a feed pipe 14 and a distributor chamber 13. Light liquid is discharged from between the discs in the chamber 9 and via channels 17 and a paring disc 18. The heavy liquid discharges from the passage and channel 20 21 past an annular baffle plate 22. Light liquid separated in chamber 12 is led away via the disc set in chamber 9. The solids centrifuged in chamber 12 pass through the gap 23 into the chamber 10 from which all the solids are evacuated via openings 4 which are periodically opened and closed by a hydraulic valve 5.
Patent GB-1097021-A (GB)
Title: Improvements in or relating to frequency comparison devices
Inventor: SOWDEN RAYMOND JOHN
IPC: H03K5/26
Filed: 1964-01-20
Abstract: 1,097,021. Transistor pulse circuits; frequency discriminators. HAWKER SIDDELEY DYNAMICS Ltd. Jan. 20, 1965 [Jan. 20, 1964], No. 2405/64. Headings H3A and H3T. A comparator for indicating which of two pulse trains has the higher pulse repetition frequency comprises two bi-stable devices 10, 20 to each of which the two trains # 1 , f 2  are applied and having inhibiting couplings 5 and 6 which prevent a change of state of the other when a respective one of the pulse frequencies is higher than the other. The state of the bi-stable circuits provides an output indication which may be used to control the flow of the higher or lower pulse train to an output terminal. In Fig. 1 the input pulses are such as normally to set the corresponding side of the bi-stable circuitto an O condition and the inhibiting connection holds or switches and holds the side it is connected to in the O state for a period comparable to the interval between pulses, in response to a change at the inhibit input from 1 to 0. Accordingly, if # 1  is greater than # 2  the two bi-stable circuits 10, 12 progress to a state predominantly 0-1, 0-1 but periodically 1-0, 0-1. Thus, with 20 in a state 0-1 no inhibit signal is provided by connection 6 and 10 is switched between its two states by input pulses f 1  and f 2 . This provides an inhibit signal on line 5 which ensures that 20 remains in the 0-1 state. If f 2  is higher than# 1  the state of the circuits is predominantly 1-0, 1-0 and periodically 1-0, 0-1. Bi-stable devices 10 and 20 are coupled to a further bistable device 30 through connections which respond to a change in one direction so that device 30 will be set to a steady state depending on which of 10 and 20 is changing and therefore on which frequency is the higher. Device 30 controls gates 39, 40 to allow the higher of the two frequencies to pass in the output. Alternatively it could pass the lower or another frequency. A transistor circuit corresponding to Fig. 2 is described with reference to Fig. 3 (not shown). The bi-stable circuits are cross-coupled transistors, the inhibiting couplings comprise C.R. circuits, the connection from 10 and 20 to 30 comprise differentiating circuits and AND gates 39 and 40 use diodes. One frequency may be a reference value and one may be applied through a Schmidt trigger shaping circuit (T9, T10).
Patent GB-769116-A (GB)
Title: Improvements in or relating to preparation of oxetane polymers
IPC: C08G65/18
Filed: 1955-01-26
Abstract: 3,3-Bis-(chloromethyl)-oxetane is dissolved in an inert liquid, the solution dispersed in an immiscible inert diluent, and polymerization effected at - 80 DEG  to 70 DEG  C. by addition of HF, BF3 or a complex of BF3, e.g. with ether or acetic acid.  The product is obtained in the form of beads or spheres. Solvents mentioned are liquid sulphur dioxide, sulfolane (i.e. 2,3,4,5-tetrahydrothiophane - 1,1 - dioxide), and the 2-methyl-, 3-methyl-, and 2,4-dimethyl-sulfolanes.  Diluents mentioned are ethane, propane, butane, pentane, hexane, heptane or mixtures thereof, cyclopentane, cyclohexane and methylcyclohexane.  Talc or kaolin may be added as a dispersing agent.  The process may be batch or continuous.  Catalyst is destroyed at the end of the polymerization by addition of alcohol, e.g. methanol or water. The polymer may be purified by working with the alcohol and is separated by filtration or centrifugation. Examples are given of the polymerization of 3,3-bis-(chloromethyl) oxetane with boron trifluoride, which may be introduced in a stream of nitrogen.  Reference has been directed by the Comptroller to Specification 723,777.
Patent GB-1246165-A (GB)
Title: Improvements relating to trolley-wire overhead electric supply systems
Inventor: TUSTIN ARNOLD
IPC: B60M1/20
Filed: 1969-01-15
Abstract: 1,246,165. Conductors. BRITISH RAILWAYS BOARD. 7 Jan., 1970 [15 Jan., 1969], No. 2414/69. Heading B7L. [Also in Divisions F2 and H2] An overhead contact wire for vehicles is supported and located at masts between which it droops. At points remote from the masts it is supported by elastic support members which provide a lifting force to compensate partially for the weight of the contact wire. The elastic support members may be springs 7 which need not be equally spaced suspended from an auxiliary wire 6, and if W is the weight of wire in each span, S the total lifting force provided by the elastic support members in each span, and P the upward contact force of the contact member of a vehicle on the contact wire the relation S = W - 2P is satisfied, and it is shown that under these conditions the point of contact between the contact wire and the contact member moves in a straight line through the support point. The elastic support members may be embodied in a stitch suspension in the neighbourhood of the masts, as in Figs. 2-4 (not shown) where location and support of the contact wire is provided by spring (53) with stop (50) and abutments (51, 52) so that excessive contact force will cause the wire to lift. Weight compensation may be provided by a spring (12) in stitch wire (13) passing over a pulley at (16) on the mast (Figs. 2 and 4), and a compound stitch suspension giving four equal weight compensation forces at (19-22) is shown in Fig. 4. The stitch wire may alternatively be attached to the mast via spring (18), and spring (12) omitted. In Figs. 5 and 6 (not shown) the elastic support members are tapered spring rods (25, 26), which may be made of glass fibre attached to the mast (2) at their thicker ends via a block (27). Resilient support and location is provided at (28), and the whole is supported by pivoted cantilever arms (29, 30), and ties (35, 36). A spring with a non-linear forcedisplacement characteristic (see Division F2) is shown in Fig. 7, and may be used to support the contact wire so that if a given contact force is exceeded, the spring aids in the lifting of the contact wire. For high speeds the increased stiffness of the wire due to inertia may be overcome by increasing the upward contact force aerodynamically.
Patent GB-1243286-A (GB)
Title: Amalgam hydrodimerisation of organic compounds
Inventor: CLARKE ERIC ALEXANDER
IPC: C07C67/00
Filed: 1969-01-15
Abstract: 1,243,286. Dimerisation of esters and nitriles. IMPERIAL CHEMICAL INDUSTRIES Ltd. 15 Jan., 1969, No. 2426/69. Addition to 1,157,445. Heading C2C. α,# - Olefinically unsaturated esters or nitriles are reductively dimerized by an amalgam reduction system, the ester or. nitrile being contained in a reaction medium including a proton source that co-operates with the amalgam to provide said reduction system, characterized in that the reaction medium contains more than 50% by weight of a polar aprotic solvent and a dissolved non-reacting fully alkylated onium salt to enhance yields of dimer, and also in that the reaction is conducted in a closed system under pressure at a temperature between 55 C. and 100 C. The process is particularly applicable to the dimerization of acrylonitrile or alkyl acrylates.
Patent GB-862091-A (GB)
Title: A device for interrupting alternating current substantially when the current wave passes through zero
IPC: H01H33/59
Filed: 1958-01-24
Abstract: 862,091. Arcing preventing in switches. LICENTIA PATENT - VERWALTUNGSG.m.b.H. Jan. 24, 1958 [Jan. 24, 1957], No. 2435/58. Class 38 (5). The contacts of an electro-hydraulic or electro-pneumatic alternating current contactor are timed to open in the vicinity of a current zero by arranging for the discharge of the pressure-fluid from an operating cylinder under the control of a rotary valve which is driven synchronously and phased in accordance with the phase displacement of the controlled load current. The contacts, e.g. 28, 33, Fig. 2, are opened by springs 37<SP>1</SP>, 37<SP>11</SP> and closed by pressure-fluid supplied by a gear pump 9 driven by a synchronous motor 3 which may be energized initially from the voltage of the A.C. supply but subsequently is energized by or in accordance with the load current. The motor 3 also drives rotary valves 65, 68 and an auxiliary contact device 89, Fig. 3, associated with each set of contactor contacts. To close the contactor contacts, a switch 82 is closed to energize a solenoid 73 which moves a pilot valve 71 to the left to admit pressure-fluid from a pipe 76 to the left-hand side of a main valve 60. The valve 60 is now moved to the right to admit pressure fluid from a pipe 43 to the cylinder 56 to force a piston 26 upwardly to close the contactor contacts. To open the contactor contacts, the switch 82 is opened, but the circuit of the solenoid 73 remains completed at contacts 81 until insulating parts 90 of the rotary contact device 89 pass beneath brushes 88, 92. When the solenoid is de-energized, the pilot valve 71 is restored to the position shown to permit the supply of pressure fluid to the right-hand side of the valve 60 when the rotary valve 68 is turned into a suitable position by the synchronous motor. This restores the valve 60 to the position shown and permits the discharge of fluid from the cylinder 56 immediately the valve 65 is opened by the synchronous motor.
Patent GB-740199-A (GB)
Title: Improvements relating to silencing of vacuum cleaners
Inventor: FISKER PEDER ANDERSEN
IPC: A47L5/36
Filed: 1954-01-27
Abstract: 740,199. Silencing vacuum cleaners. AKTIESELSKABET FISKER & NIELSEN, and BANGSVEJ, P. Jan. 27,1954, No. 2537/54. Class 7(2) In a vertical or other type of vacuum cleaner having an air passage 43, Fig. 1, opening from a fan case 36, 39, or from a chamber 57 above the fan case, and automatically-operating valve means including a valve disc 44 of sound-absorbing material, by which the air passage remains closed except when the cleaner is in operation, the wall of the fan case is provided with a covering 48 of sound-absorbing material extending over the entire radial width of the case so that the passage for the flow of air, when the valve is open, is bounded on both sides by surfaces formed of sound-absorbing material, while the distance separating those surfaces, determined by the momentary lift of the valve, remains small in relation to the length of the passage. The valve disc 44 is the same size as the covering 48. As shown, the disc 44 is secured to a metal plate 53 preferably such that the central portion 54 of the disc does not contact the plate when the valve is open, the plate being slidably guided on a pin 45, or a sleeve 49 mounted on the pin. The disc is clamped by the sleeve against an upwardly curved part 47 of a plate 46, or a bridge piece, carrying guide vanes 40, and the valve may close under its own weight or be biased to the closed position by a spring 55. A valve may also be mounted in the opening 56 of the chamber 57; alternatively, several openings each having a valve disc 44 are provided in the wall of the fan case, or the chamber, or a single valve disc may be used in conjunction with a number of openings in the fan case. To contribute to the silencing of the cleaner the bearer 12 supporting an electric motor 17 is formed of synthetic resin, and the ring 9 to which the bearer is attached is Z-shaped in crosssection. In a modification, a disc 58, Fig. 3, of resilient material is attached to a stepped part 64 of the plate 53, that part having a collar 66 forming a groove 67 accommodating an inwardly-directed bead 69 of a protecting cover 68 of resilient material and the disc 58 being clamped between bushes 61, 62 on the pin 45 and under the pressure of the spring 55. A bush 63 below the valve disc 44 abuts an upwardly curved central part 47 of the plate 46. Specification 675,921 [Group XXVIII] is referred to.