baber/WOPTO huggingface dataset:
Patent GB-2475068-A (GB)
Title: A two stroke internal combustion engine with variable compression ratio
Inventor: TURNER JAMES WILLIAM GRIFFITH
IPC: F02D9/04
Filed: 2009-11-04
Abstract: A two-stroke internal combustion engine comprising at least one piston 19 reciprocally within a cylinder 20, an exhaust port 23 allowing communication of the cylinder with an exhaust passage 24, where the port is opened and closed by the piston during the reciprocal motion thereof, a moveable shutter mechanism 1 for varying the effective area of the exhaust port, where the shutter mechanism varies the effective area cyclically in a timed relationship to the reciprocal motion of the piston within the cylinder, a compression ratio variation mechanism for varying a compression ratio of the cylinder, sensors for measuring one or more operating characteristics of the engine and for generating signals corresponding thereto, and a control unit which processes the signals generated by the sensor means to control the motion of the shutter mechanism and the compression ratio variation mechanism to vary the compression ratio of the cylinder; wherein the engine can operate with a compression ratio in the range 32:1 to 50:1.
Patent GB-1241763-A (GB)
Title: Improved readback circuit for information storage systems
IPC: H04N5/93
Filed: 1969-02-26
Abstract: 1,241,763. Recording and playback; local Circuits. RCA CORPORATION. 26 Feb., 1969 [15 March, 1968], No. 10177/69. Heading G5R. A circuit for reading out data recorded on a storage medium 12 comprises a transducer 19, an amplitude compensator circuit 70 which provides a substantially linear response up to a selected cut-off frequency but which adds a transient ringing tail at the cut-off frequency to the read-out signal, a delay circuit 104 which delays the read-out signal for a time substantially equal to the period corresponding to the cut-off frequency, and subtracting means 106 which subtracts the delayed read-out signal from an undelayed read-out signal to produce a corrected read-out signal which has components that are quadrantally shifted in phase with respect to corresponding components of the direct read-out signal at the transducer 19 and in which the transient ringing tail has been suppressed. A phase compensator circuit 50 is included.
Patent GB-751403-A (GB)
Title: Improvements in or relating to gyroscopic systems for use in air navigation
IPC: G01C19/44
Filed: 1954-04-07
Abstract: 751,403. Automatic control systems for gyroscopes. SVENSKA AKTIEBOLAGET GASACCUMULATOR. April 7, 1954 [Oct. 26, 1953], No. 10198/54. Class 38 (4). In Fig. 2 a pendulum 35 detects tilt of one of the gimbal rings of a three degree of freedom gyroscope (not shown) carried by an aircraft. When the gyroscope is started, a time relay 55 is also energized to close a circuit through contact 42 so that contact between pendulum 35 and contact 37 or 38, due to tilt, energizes, from a high frequency A.C. source 40, a reversible torque motor 48 to assist the stabilization of the gyroscope during starting. After a time normally sufficient for the gyro to reach a stable state relay 55 releases to close a circuit through contacts 56 so that normal control of torque motor 48 obtains through a thermionic valve operated polarized relay 59 from an E-type pick-off 70 associated with a soft iron shoe of pendulum 35. Resistances 64, 65 reduce the torque of motor 48 under normal control. If, for example, due to aerobatics, tilt of pendulum 35 exceeds a predetermined value, pick off 70 is unaffected in view of the relatively narrow air gaps but contact between pendulum 35 and resilient contact 37 or 38 energizes a delay relay 82 which switches on a lamp 84, if the excessive tilt persists, to warn the pilot that relay 55 will probably need to be operated again after the manoeuvre. An additional pendulum and torque motor controlling tilt of the other gimbal ring is referred to.
Patent GB-1081782-A (GB)
Title: Improvements in apparatus for actuating an alarm upon movement of a closure member relative to a stationary member
IPC: E05C17/36
Filed: 1966-03-09
Abstract: 1,081,782. Burglar alarms. GENERAL ALARM CORPORATION. March 9, 1966 [Oct. 4, 1965], No. 10255/66. Heading G4N. A door 10 is secured against more than a predetermined amount of movement relative to a jamb 11 by a chain 13 one end of which is detachably mounted in a slotted plate 12 on the door whilst its other end is fixed to a bolt 36 which projects from a switch operating lever (28), Fig. 3A (not shown), contained in a housing 16. If the chain is tensioned it causes lever (28) to actuate the operating handle (26) of an alarm switch (25), Fig. 2 (not shown), thus placing alarm (21) in circuit with a battery (22). The alarm may be a bell or buzzer in housing 16 or it may be a remote alarm, e.g. a flashing light. The alarm may also be sounded by a push-button 37. In a modification, Fig. 7, the chain is secured at one end to a strike plate 61 of a lock and at its other end to an anchor 91 which is slidable in a slot in a housing 60 secured to the door. Unlocking of the door from the outside by turning a key in lock cylinder 72 is prevented by a thumb-turn 71 which is slotted at 92 to receive a projection on chain anchor 91. If the door is forced the chain will cause housing 60 to tilt about a fulcrum 75. This causes a slot 81 in housing 60 to engage a switch handle 77 of alarm switch 79, thus placing alarm 80 in circuit with a battery 78. A lamp (86), Fig. 9 (not shown), lights up to indicate when bolt (67) is retracted.
Patent GB-1000301-A (GB)
Title: Improvements in or relating to dehydration of barium hydroxide octahydrate
Inventor: MAY STANLEY KENNETH
IPC: C01F11/02
Filed: 1961-03-21
Abstract: A process for the partial or complete dehydration of Ba(OH)2.8H2O comprises passing streams of an aqueous solution or a melt of Ba(OH)2.8H2O into a dehydration zone and subjecting them during at least part of their travel to conditions of elevated temperature being provided by passing hot gas, which is either air or a gas inert to Ba(OH)2, through said zone, the hot gas being at a temperature sufficiently above the temperature of said streams to effect the required dehydration. The examples relate to the spray drying of Ba(OH)2.8H2O melt in air at various temperatures in the range 100-225 DEG  C.
Patent GB-739872-A (GB)
Title: Improvements in or relating to swivels for use when angling
Inventor: HARDY LAURENCE ROBERT
IPC: A01K91/06
Filed: 1954-04-08
Abstract: 739,872. Fishing tackle. HARDY BROS. (ALNWICK), Ltd. April 8, 1954, No. 10360/54. Class 48. A combined swivel and stabilizing plate mounted on the line or trace at some distance from the spinner or similar bait has a body portion on which an eye is mounted in or on each end to which the line or trace is attached, at least one of the eyes being rotatable and a stabilizing plate attached to the body in a plane parallel with the longitudinal axis of the swivel and shaped so as to resist the tendency of the body to rotate. The swivel shown in Fig. 1 has a tubular or open work body 1 and a plate formed in two symmetrical halves 2a, 2b of thin metal, celluloid or the like attached to the body 1 by soldering or other suitable means. In alternative constructions, a D-shaped slab of lead (Fig. 3, not shown), or, Fig. 4, a thin plate 2 weighted at its end by a lead weight 7 is attached to one side of the body 1. The plate 2 and the weight 7 may be streamlined. The swivel is provided with a rotatable eye 5 at its rear or trace end and may be provided with a fixed or rotatable eye 3 at its forward end. Ballbearings of non-corrodible material may be used in the swivel mechanism.
Patent GB-514244-A (GB)
Title: Improvements in and relating to elastic fluid turbines
IPC: F01D5/06
Filed: 1939-04-03
Abstract: 514,244. Making turbines; uniting by fusion. BRITISH THOMSON-HOUSTON CO., Ltd. April 3, 1939, No. 10385. Convention date, April 1, 1938. [Classes 83 (ii) and 83 (iv)] A turbine rotor is formed by a shaft 10 and disc 11, Fig. 1, with annular projections 17, 18 and welding material 20 which is inserted in grooves 19. The shaft and discs are then machined, as shown in Fig. 2, the diameter 14 being smaller than the smallest diameter 15 of the welds 12. In a modification the projection 18 bears axially on a collar on the shaft before the welding material is placed in position.
Patent GB-250988-A (GB)
Title: Improvements in chill moulds for the manufacture of grooved rollers or the like
IPC: B22C9/06
Filed: 1926-04-20
Abstract: 250,988. Weymerskirch, T. April 20. 1925, [Convention date]. Moulds, for casting grooved rollers or the like, formed of a number of chill-sections 2 separated by devices 5 which can be contracted, to allow free contraction of the casting, are provided with automatic means for operating these devices or for actuating a warning so that the devices may be operated by hand. During solidification the iron cast in the mould expands, lifting the upper spindle-mould 1 thereby bringing an adjustable contact 39, Fig. 2, against a fixed contact 41 thus operating an electric bell 40, light &c. or a relay 48, Figs. 12 and 23, which in turn energize solenoids 42 and contract the devices 5. These devices may consist of elliptical or eccentric bolts or conical screws rotated by levers 15 and links 9 directly operated by the solenoids 42 or by a perforated annulus 10, Fig. 2, rotated by a handle 14. In other modifications the devices may comprise wedges withdrawn singly or in gangs directly by solenoids or indirectly through screws, eccentric rollers, wedges or by arms 102, Fig. 23, on rods 9 rotated by gears 115 thereon and toothed sectors 107 on a ring 106 which is rotated by the solenoid 42. In another modification the devices comprise toggle levers 31, Fig. 9, operated by weights 32 and links 15 from the links 9. In another modification two series of devices 5, Fig. 17, are operated by a single link 9. If desired the link 9 may be operated by fluid pressure admitted to a cylinder 71, Fig. 15, by a valve 70 which is operated by a relay cylinder 68 controlled by a valve 66 operated by the adjustable contact 39. In another modification the annulus 10 is rotated or electrical contact 81, 82, Fig. 16 is made by a spring 73, compressed by hand, which is released by the contact 39 lifting a detent 78. Any of the automatic arrangements may also have hand operating means such as a lever 108, Fig. 23, and additional fine adjusting means such as wedges 29, 30, Fig. 9, may be provided. The molten metal is prevented from escaping between the sections 2 by sand or other insertions 7. Guiding moulds.-Guiding faces 35, Fig. 9, on the sections or hoops 36, Fig. 16 and 23, with vents 38, may be provided to maintain axial alignment.
Patent GB-559582-A (GB)
Title: Improvements in aircraft alighting gear
IPC: B64C25/50
Filed: 1940-06-15
Abstract: 559,582. Aircraft alighting gear. MACLAREN UNDERCARRIAGE CO., Ltd., MACLAREN, O. F., and BAYNES, L. E. June 15, 1940, No. 10427. [Class 4] An aircraft alighting gear such as is described in Specification 509,923 in which provision is made for setting the landing elements in parallel tracks and holding them in such setting for effecting a landing or take-off in a cross-wind, is provided with means for enabling the landing-elements to set themselves automatically during the initial stages of a landing operation after which they are locked in position. An overriding control on the nose or tail element is provided for steering the aircraft while taxying. Fig. 3 shows two main landing wheels 17 and a nose or tail wheel 18 capable of castoring about vertical axes under the control of double acting jacks 10, 101 connected together by the hydraulic circuits shown so that all three wheels move in unison. While the aircraft is in the air the hydraulic circuit is completed through valves 23 and a conduit 25 so that the wheels can swivel freely, but after contacting the ground and taking up their adjusted position the valves 23 are closed by levers 28 and links 29 connected to the telescoping parts of the landing legs so that the wheels are locked in their set position. The jacks .controlling the wheel 18 are connected to a centrally pivoted lever 19 movable by the rudder-bar to enable the wheel 18 to be steered. A pilot-controlled valve 8 in a pump circuit enables the wheels to be set manually in either direction and then locked for taking-off in a cross wind, the valves 23 being closed. To ensure that the valves 23 are not immediately closed on landing, the link 29 may incorporate a spring-controlled telescopic element shown in Fig. 5, and the lever 28 be controlled by a dash pot 36. According to the Provisional Specification the locking of the landing elements, in their set position may alternatively be effected by radially splined cam plates on movable parts of the legs which come into contact with fixed cams.
Patent GB-539641-A (GB)
Title: Improvements in or relating to the manufacture of rubber transformation products
IPC: C08C19/08
Filed: 1940-06-15
Abstract: 539,641. Rubber derivatives. ALBERT PRODUCTS, Ltd., and MARTIN, S. R. W. June 15, 1940, No. 10428. [Class 70] Transformation products are made by heating a mixture of rubber, a phenol and concentrated sulphuric acid for a short time, e.g. 6 to 8 hours, at or near the boiling point of the phenol, the amount of phenol being equal to or greater than that of the rubber. The products are used in varnishes, lacquers, joint packings, adhesives, moulding compositions and dressing and impregnating agents. Specifications 249,172, 307,134, [both in Class 70], and 498,311 are referred to.
Patent GB-200579-A (GB)
Title: Improvements in and relating to collapsible tubes
IPC: B65D35/28
Filed: 1922-04-12
Abstract: 200,579. Coleman, C. J. April 12, 1922. No Patent granted (Sealing fee not paid). Screw stoppers formed to aid withdrawal; stoppers serving secondary purposes. - The screw-threaded cap e of a collapsable tube has an enlarged head g integral with, or attached to it, so as to facilitate removal of the cap. The surface of the head g may receive advertising or other matter.
Patent GB-759546-A (GB)
Title: Improvements in or relating to diaphragm operating mechanism for tire-shaping and vulcanizing presses
IPC: B29D30/06
Filed: 1954-04-09
Abstract: 759,546. Pistons. McNEIL MACHINE & ENGINEERING CO. April 9,1954 [Sept. 29, 1953], No. 10484/54. Class 122(1) [Also in Group V] The 'operative face of a piston 92 sliding within a cylinder 30 is in the form of a rubber sphere 90. Reference has been directed by the Comptroller to Specification 704,797.
Patent GB-1429291-A (GB)
Title: Process for the preparation of lubricating oil
IPC: C10N20/02
Filed: 1972-03-07
Abstract: 1429291 Hydrocracking; obtaining lubricating oil SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 5 March 1973 [7 March 1972] 10522/72 Heading C5E A lubricating oil is prepared from a mixture of heavy hydrocarbons which contains nitrogen and aromatics by adding a nitrogen compound and then hydrocracking in the presence of a catalyst comprising one or more metals from Group VIII or from the Cr and Mn sub-groups on a support of one or more oxides of elements of Groups II, III and IV, and fractionating the product. The feed may be a wax distillate, a slack wax, a deasphalted residual fraction of petroleum, or a solvent raffinate from such a residual fraction or from a heavy cracked oil. The nitrogen compound may be ammonia or an organic compound that is reduced to ammonia in the hydrocracking step (many listed). At least part of the nitrogen may be ammonia separated from the product and recycled. The catalyst may be that of Specification 1,390,359 or Specification 1,398,384 but others are also disclosed. The cracked product may be hydrofinished before fractionation. By adjusting the nitrogen content of the feed, one can obtain satisfactory yields of lubricating oil of a given VI from varied feeds without needing to change the catalyst. The product generally needs to be dewaxed.
Patent GB-105338-A (GB)
IPC: B60B9/06
Abstract: 105,338. Tiberti, G. O. March 31, 1916, [Convention date]. Spring wheels with continuous outer rigid ring and helical springs.-The outer tyre-carrying rim a slides within the fixed inner rim b and is supported by helical springs 9 housed in casings 12 adjustably secured to the rim b. Plungers 8 on the outer ends of the springs are fitted with rollers 7 bearing on the inner polygonal surface of a ring 6 secured between the flanges 5 of the rim a.
Patent GB-837695-A (GB)
Title: Method of producing products containing antibodies
IPC: C07K16/04
Filed: 1957-04-06
Abstract: Products containing an antibody or antibodies for administration to animals or human beings are produced by infusing a preselected antigen or antigens into the mammary gland of an ungulate animal through the teat canal during the pre-parturition period of the animal, milking the animal after parturition and isolating the gamma-globulin from the milk.  The antigen may be a bacterium, virus, protein, tissue, a mycotic mould and fungus, pollen or dust.  The infusion is preferably made 2-8 weeks prior to parturition, and booster doses may be given at intervals by infusion, or after parturition, by parenteral injection.  In order to isolate the gamma-globulin containing the antibody or antibodies, the fat is removed from the collected milk, casein precipitated therefrom and removed, the ionic strength of the residue is adjusted to about 0.40-0.45, the mixture is cooled to about -5 DEG  C. and the gamma-globulin precipitated by addition of alcohol at that temperature.  The gamma-globulin itself or milk to which it has been added may be administered orally, rectally, parenterally or topically.
Patent GB-805741-A (GB)
Title: Improvements in or relating to compositions comprising surface active agents
IPC: C11D1/22
Filed: 1956-04-06
Abstract: A detergent composition, suitable for the production of concentrated aqueous solutions, comprises 40-60 per cent by weight of a surface-active alkyl sulphate, particularly those sodium alkyl sulphates obtained by the process of Specification 657,598, [Group IV (b)], the remainder of the composition consisting of a mixture of alkylaryl sulphonates, a major proportion of which comprises sodium or ammonium alkylaryl sulphonate, or both, and a minor proportion of which comprises triethanolamine alkylaryl sulphonate.  Preferably the composition comprises 50 per cent alkyl sulphate and 50 per cent mixed alkylaryl sulphonates, of which latter the triethanolamine salt should comprise at least 20 mols. per cent, and preferably one-third by weight.  The preferred alkylaryl sulphonate is the dodecyl - (propylene tetramer) - benzene sulphonate.  Sodium sulphate may also be present in the composition to an extent not exceeding 6 per cent.ALSO:Alkylaryl sulphonate mixtures, which comprise a major proportion of the sodium or ammonium salt, or both, and a minor proportion of the triethanolamine salt, are obtained by alkylating an aryl hydrocarbon and then sulphonating the product, with sulphuric acid, sulphur trioxide or oleum in known manner, followed by neutralizing the sulphonic acid obtained with a mixture of the appropriate bases.  The alkylaryl sulphonate is suitably derived from an alkylaryl hydrocarbon obtained by alkylating benzene, toluene, xylene, diphenyl, or naphthalene with olefins of 6-16 carbon atoms or more.  The preferred example is dodecyl-(propylene tetramer)-benzene sulphonate.  The amount of triethanolamine used to neutralize the acid is such that at least 20 mols. per cent, preferably one-third by weight, of the sulphonate obtained is the triethanolamine salt. Specification 657,598 is referred to.
Patent GB-573298-A (GB)
Title: Improvements in oil burning lamps for use with railway semaphore and like signals
IPC: B61L9/02
Filed: 1944-06-02
Abstract: 573,298. Railway signal lamps. LAMP MANUFACTURING & RAILWAY SUPPLIES, Ltd., and MINETT, C. F. June 2, 1944, No. 10630. [Class 75 (iv)] In an oil-burning railway signal or like lamp of the kind in which an interior lighting unit is mounted in an outer case secured to the signal post as described in Specification 510,814, the interior unit consists of an oil fount 8 carrying on brackets 7 a hinged steel pressing formed at the top with air inlets 19 around a flue 11 for the combustion gases from the burner 13 and provided with light emission apertures in its front and back walls 3, 1 surrounded by pockets 14, 16 receiving glass plates. The pressing is preferably of D-section in plan and is formed with a flanged lower edge 5 fitting closely. over the opposed surface of the fount 8. The front edge 17 of the pressing rests against a raised portion 18 on the fount. The air inlets 19 are shielded by a perforated ring 21 and an annular L-section baffle 20. This may alternatively be admitted through shielded holes at the lower portions of the side walls of the pressing. The pressing is normally secured to the fount by a wire bolt 10. A carrying handle 24 is mounted in brackets 25 welded to the top of the pressing and carries a cap 26 covering the top of the flue 11 when the unit is not in its outer case. The oil fount preferably consists of a drawn steel well and a pressed steel top plate welded together.
Patent GB-670722-A (GB)
Title: Process for manufacturing anatoxins and like products
IPC: A61K35/614
Filed: 1949-04-21
Abstract: 670,722. Anatoxins; cultivating micro-organisms. LABORATOIRES DE RECHERCHES MICROBIOTIQUES SOC. AR.L. April 21, 1949 [April 27, 1948], No. 10638/49. Class 81 (i). An anatoxin for restoring animal and human blood to normal conditions is prepared by isolating and growing in pure colonies a parasitic micro-organism which lives in living tissues or media, the growth being effected in a suitable medium and being checked under microscopic supervision, including the observation of the blood condition of inoculated test animals, made possible by the use of hµmatial bleaching dyes reducing the colour of the cells and enhancing the relative coloration of the micro-organisms ; devitalizing the resulting culture by means of known chemical agents and by means of ultrasonic vibrations; adding a retarding agent and a preserving agent and packing the product in bottles or ampoules. According to an example siphonospoca polymorpha is cultivated aerobically at a temperature of 38‹ C. in a peptonised medium having a pH of 7.7. One or more successive transplantations to test animals are made and the progress of cultivation,is checked microscopically after dyeing. The checking technique is effected by spreading the blood or medium to be examined on a slide, subjecting the slide for a few seconds to a temperature of 120‹ C. immersing it in an aqueous solution of lactic acid and methyl alcohol, washing it and bathing it for about 10 minutes in a solution of fuchsine and methylene blue in methyl alcohol. The parasitic micro-organisms stand out as small darker spots that contrast with the pink transparence of the red corpuscles. The resulting culture is killed by treatment with formaldehyde followed by treatment with ultrasonic vibrations, e.g. of above 18,000 cycles per second, the death of the culture being confirmed by the above dyeing test. Aluminium hydroxide is then added as a retarding agent and a small proportion of phenol as a preserving agent. The resulting product has the properties of an antigen of benzo-gynoestryl-5 and has a destructive effect on parasitic micro-organisms and abnormal living cells.