baber/WOPTO huggingface dataset:
Patent GB-659428-A (GB)
Title: Improvements in plants including at least one free piston auto-generator and one gasturbine
IPC: F02B71/04
Filed: 1949-02-10
Abstract: 659,428. Gas turbine plant. SOC. D'ETUDES ET DE PARTICIPATIONS EAU, GAZ, ELECTRICITE ENERGIE, SOC. ANON. Feb. 10, 1949, No. 3742. Convention date, Feb. 13 1948. [Classes 7(i) and 7(vi)] [Also in Groups XXVI and XXIX] In a plant comprising a gas turbine fed by one or more auto-generators, the fuel supply to which is regulated by a constant speed governor on the turbine, a build-up of gas pressure in the starting period before the turbine reaches governor speed is prevented manually in one of three ways. The pressure line from the governor servomotor may be closed so that the fuel supply is maintained at the minimum value. Or, with the fuel supply at the maximum value, a discharge valve in the turbine lead or in the casing of the auto-generator may be opened, or, the discharge valve in that casing which normally shuts when the proper delivery pressure is reached is shut off from the delivery pressure and remains fully open. The three alternative means are shown in the plant of Fig. 1. The fuel pump 10 is operated by linkages 11, 12, 13 and its output is varied by rotating the pump by means of a hydraulic cylinder 20, lever 23 and rack-gear 18. The cylinder is supplied with fluid through a governorcontrolled leak device 30. When a valve 53 is shut a spring 21 moves the pump to its minimum feed position. Alternative valves 51, 51<SP>1</SP> are used for discharging gas from the generator casing 14 or from the turbine lead 15. A discharge valve 44 is biassed towards open position by a spring 47 and is gradually closed, in normal operation, as the pressure rises in the turbine lead 15. In the starting period ,a valve 52 shuts off the connection with the lead 15 and the spring 47 keeps the valve 44 open fully. When the speed-governor reduces the fuel supply to the minimum, an arm 38 presses a rod 58 to the left and opens a valve 56. This allows pressure to fall below the piston 46 of the valve 44 and the valve opens. The point at which this takes place is varied in accordance with the pressure in the generator casing by means of a piston 40 which determines the height of the end of the rod 58. The speed-governor servomotor gear comprises a leak 32 in a piston 31 which is pressed on to the end of a plunger 29 by a spring 33. The position of the plunger is determined by the governor 17 through a cam 27 and lever 28. Fluid at a pressure determined by the device 30 acts in the cylinder 20 to rotate the fuel pump 10.
Patent GB-777802-A (GB)
Title: Improvements in or relating to television receivers
Inventor: COPE JOHN EDWARD
IPC: H04N5/53
Filed: 1954-02-09
Abstract: 777,802. Automatic gain control. PYE, Ltd. Feb. 1, 1955 [Feb. 9, 1954], No. 3779/54. Addition to 777,801. Class 40(5) In a television receiver provided, as in the parent Specification, with automatic gain control (A.G.C.) derived from the black level by means of a sampling rectifier, the gating pulses occur at frame repetition frequency. Rectified signal with the synch pulses positive-going is applied via a cathode-follower (not shown) to the cathode of a sampling diode VI. The diode VI is gated to conduct during the postframe synchronizing periods, by negativegoing pulses applied to its cathode from the frame output transformer T. Negativegoing pulses of magnitude proportional to the black level are produced at the cathode of the diode VI and are applied via a limiting resistance R to the grid of an amplifier V2 which is normally biased to the gridding point by the application of a positive bias, to its cathode, from potentiometer P2. The pulses developed in the anode circuit of the valve V2 are A.C. coupled to the anode of a diode V3 which restores the positive tips to a predetermined potential set by potentiometer P1 connected to its cathode. They are then fed to the cathode of diode V4 from the anode of which the A.G.C. potential is obtained, via a smoothing circuit F.
Patent GB-226065-A (GB)
Title: Improvements in signalling devices for road vehicles and the like
IPC: B60Q1/34
Filed: 1924-02-14
Abstract: 226,065. Hochen, R. C. Feb. 14, 1924. Road-vehicle signals; semaphore signals.-A translucent envelope 2 in the form of a hand is pivoted on a vertical fulcrum pin 6 approximately in the plane of the hand, and is swung outwardly from a casing 1 by means of cable attached to a swivelling head 7. Stops 10, 11 are provided, and the stop 10 also serves as an electric contact for lighting the lamp 3 in the operative position.
Patent GB-1026002-A (GB)
Title: Improvements in vehicle wheel and tyre assemblies
IPC: B60C7/12
Filed: 1964-01-29
Abstract: 1,026,002. Vehicle wheels. W. RUF. Jan. 29, 1964 [Feb. 15, 1963 (2); Feb. 20, 1963; Dec. 5, 1963; Dec. 19, 1963; Jan. 15, 1964 (3)], No. 3829/64. Heading B7C. In an armoured wheel and tyre assembly for military vehicles comprising a U-section pneumatic tyre 12 clamped between rim sections 7, 8 each having a ribbed shoulder 18, 19 serving as an extension tread on soft ground, the maximum diameter of the shoulders 18, 19 is less than that of the tyre but greater than that of the air chamber 15 to guard against lateral impingement by a missile. Preferably the thickness of the tread is substantially equal to the radial height of the chamber 15 so that the vehicle may continue to run should the tyre be penetrated by a missile. A sealing ring 9 is clamped between the sections 7 and 8. In one modification (Fig. 9, not shown) sealing ring is U-shaped in radial section, and in a second (Fig. 10, not shown) a further ring 72 of resilient material surrounding the ring 9 covers axially inwardly directed flaps extending from the tyre limbs. The rim sections 7, 8 are connected at circumferentially-spaced intervals by bolts 20 passing through resilient mountings each comprising outer and inner sleeves 4, 6 vulcanized to an intermediate rubber sleeve 5. The rim sections and ring 9 are preferably of an aluminium alloy with a thermal conductivity greater than 0.3 calories/ centimetre/second/degree, and may have interengaging projections and recesses 25, 26 to prevent relative rotation. An additional annular ribbed rim portion 45 (Fig. 6, not shown) may be connected to the outboard rim section to extend the running surface over soft ground. The ribs of the rim portion 45 and rim sections 7, 8 may be recessed to receive replaceable inserts 66 of a wear-resistant material which project slightly beyond the ribs. The ring 9 may comprise several segments. An inner tube 28 (Fig. 1) may be fitted. In a further modification (Figs. 11, 12, not shown) the rim sections overlap axially and are sealed by an 0-ring, and the tyre chamber has axial ribs extending from the radially outer surface thereof.
Patent GB-1531814-A (GB)
Title: Programmable information generator
IPC: G06C21/00
Filed: 1976-01-30
Abstract: 1531814 Automatic control  R M CHAVENEAUD 30 Jan 1976 [13 Feb 1975] 3829/76 Heading G3N A programmable data sequence generating device employs rotary elements which form logic connections by means distributed around their peripheries which co-operate by momentary connections in accordance with the disclosure of Specification 864315. The elements are hierarchically graded into higher and lower stages whereby at the start of a sequence is initiated by a higher graded stage transmitting an order to a lower graded stage which develops the sequence. During a final elementary operation of the sequence, end of sequence information is transmitted to the higher order stage to prepare it for receipt of a piece of information determining the initiation of the following sequence in the lower graded stage.
Patent GB-490416-A (GB)
Title: Manufacture of substituted aliphatic carboxylic acids
IPC: C07C59/68
Filed: 1937-02-09
Abstract: Acids having the formula AXRCOOH, wherein A is an aromatic radicle, X is oxygen or sulphur and R is an aliphatic hydrocarbon radicle whose carbon chain may be interrupted by oxygen, are treated with aliphatic or cycloaliphatic olefines or alcohols or halogenated aliphatic or cycloaliphatic hydrocarbons in the presence of condensing agents, whereby substitution in the aryl nucleus takes place.  The condensing agents employed when olefines are used are anhydrous zinc chloride, boron trifluoride or molecular addition compounds of the latter.  The reaction with the alcohols is effected in the presence of at least one molecular proportion of anhydrous zinc chloride and bivalent metals are used for the condensation with the halogenated hydrocarbons.  In examples: (1) phenoxyacetic acid is reacted with diisoheptylene in the presence of boron fluoride or zinc chloride and with diisobutylene in the presence of carbon tetrachloride as solvent boron fluoride; (2) phenoxyacetic acid is reacted with isobutanol in the presence of zinc chloride; (3) a -naphthoxyacetic acid is reacted with dimerized isoheptylene in the presence of boron fluoride and with tetradecylchloride in the presence of magnesium; (4) phenoxythioacetic acid is reacted with dodecylalcohol in the presence of zinc chloride and with a chlorinated middle oil obtained from hydrogenated coal in the presence of zinc; (5) cresoxyacetic acid is reacted with diisoheptylene in the presence of boronfluoride and with a chlorinated middle oil similar to that used in example 4 in the presence of zinc amalgamated with mercuric chloride; (6) phenoxyacetic acid is reacted with normal and iso-octyl chloride, iso-octyl bromide or iodide and with a chlorinated petroleum fraction in the presence of zinc; (7) phenoxybutyric acid is reacted with diisoheptylene in the presence of borontrifluoride; (8) phenoxyethoxyacetic acid is reacted in the presence of zinc with a chlorinated petroleum obtained by chlorinating a fraction thereof in the presence of copper or iron.  The use of carboxylic acids derived from hydroxyanthracenes, hydroxyphenanthrenes and a -phenoxylauric acid is mentioned.  Olefines obtained by cracking paraffins or the dehydration of alcohols, alcohols obtained by the reduction of fatty, wax and resinic acids, hydrogenated aromatic hydroxy compounds and naphthene alcohols are also mentioned as starting materials. Specification 481,909 is referred to.
Patent GB-1539701-A (GB)
Title: Mineral fibre web laminated with metal foil
IPC: B32B15/14
Filed: 1977-01-31
Abstract: In the production of mineral fibre webs laminated with a metal foil, an adhesive with a composition based on water glass and clay mineral substances was previously used. In order to improve the storability of the adhesive and to be able to process it under constant conditions, according to the invention an adhesive is used which is composed of two components to be mixed on use, one component containing 60-95 % by weight of water glass and 4-16 % by weight of clay mineral substances and the second component containing a substance which reacts with the first component at room temperature, causing the curing of the adhesive.
Patent GB-419435-A (GB)
Title: Improved process for making hardenable plastic masses
IPC: C08G8/28
Filed: 1933-02-08
Abstract: In the process described in the parent Specification aldehydes are replaced by polymers or derivatives of aldehydes such as paraformaldehyde, trioxymethylene and hexamethylenetetramine.
Patent GB-707536-A (GB)
Title: Method and apparatus for continuous production of absorbent material having a basis of regenerated cellulose
IPC: B29C44/00
Filed: 1950-02-15
Abstract: Absorbent material, such as absorbent artificial sponge material in sheet form, having a basis of regenerated cellulose, is produced by continuously discharging on to a travelling endless belt in the form of a band a pasty mass consisting of an intimate mixture of viscose, small crystals of a water-soluble salt inert to viscose and a reinforcing medium in the form of loose staple fibres.  The band of pasty material is then subjected to a mechanized treatment such that some of the fibres become oriented in one direction, e.g. transverse to the direction of travel of the belt, and then further mechanically treated so that some of the fibres become oriented in another direction, e.g. parallel with the direction of travel of the belt. The band, carried by the belt, is then passed through a coagulating bath and the spongy product thus obtained is treated in the usual manner and dried. The surface of the belt carrying the band may be provided with a pattern and/or a pattern may be impressed on the upper surface of the band before the latter is coagulated.  The salt may be fine-grained Glaubers salt and the staple fibres may be cotton or flax.  In the example the sponge-forming material is continuously discharged from a screw press on to the upper surface of the upper sun of a patterned rubber travelling endless belt.  The material is spread to the required thickness on the belt by means of an arm swinging to and fro transversely to the belt.  This also orients some of the staple fibres in the band of material thus formed in a direction at right angles to the direction of travel of the belt. The belt then carries the band under a pressure roller rotated at a peripheral speed greater than the travelling speed of the belt and having its axis at right angles to the belt, whereby some of the fibres in the band are oriented parallel with the direction of travel of the belt.  The belt now carries the band through a coagulating bath consisting of a boiling aqueous solution of sodium sulphate. The viscose matrix of the band is thereby coagulated and the salt crystals are dissolved out, a porous structure being thus imparted to the band.  The band is continuously drawn off the travelling belt leaving the coagulating bath and the belt is passed through a bath of cool water and brushed clean therein before returning to the zone of the discharge of material from the screw press.  Due to the orientation of most of the fibres in the plane of the sheet sponge material the tensile strength of the material is greater than that of sponge cloth cut from sponge block in the usual manner.
Patent GB-1117953-A (GB)
Title: Fourdrinier wire belt
Inventor: MACBEAN DONALD GEORGE
IPC: D21F1/10
Filed: 1966-01-28
Abstract: 1,117,953. Foudrinier fabric. JOHNSON WIRE WORKS Ltd. 27 Jan., 1967 [28 Jan., 1966], No. 3947/66. Heading D1K. The edge of a Fourdriner wire screen is reinforced by strands 21 of wire or monofilament or multifllament nylon or polyester, which are laid on the screen and attached by embedding the edge in nylon, polythene, or polyvinyl chloride. The material may be applied as a liquid or as a tape which is caused to flow by passing between hearted rollers; the reinforcing strands may be previously embedded in the tape.
Patent GB-1090061-A (GB)
Title: Production of dye mixtures
Inventor: FISCHER HELLMUTH
IPC: C09B67/22
Filed: 1965-01-29
Abstract: The invention comprises a method for the production of dye mixtures wherein a mixture of two or more aromatic o-dinitriles which differ by their substituents and/or by the aromatic radical is condensed with a 2-aminobenzimidazole, or aromatic o-dinitriles or mixtures thereof are condensed with a mixture of two or more different 2-aminobenzimidazoles, the o-dinitriles and the 2-aminobenzimidazoles being free from water-solubilizing groups, or two or more condensation products from a 2-aminobenzimidazole and an aromatic dinitrile which are different from each other are allowed to cocrystallize from a solvent.  The dye mixtures thus obtained contain as components dyes of the formula <FORM:1090061/C4-C5/1> wherein the components differ by their substitution or by their being substituted or unsubstituted in the moieties A, B and/or C. Preferred aromatic dinitriles are phthalodinitrile, 4 - methylphthalodinitrile, 4 - phenylphthalodinitrile; 4,5 - diphenylphthalodinitrile, 3 - nitrophthalodinitrile, 4 - nitrophthalodinitrile or naphthalene - 1,2 - dinitrile. Suitable 2-aminobenzimidazoles are 2-aminobenzimidazole, 1 - ethyl - 2 - aminobenzimidazole and 2 - amino - 4 - chlorobenzimimidazole. The dyes may be applied to polyamide, polyurethane and linear aromatic polyester materials.  Examples are given for the preparation of several dyes.
Patent GB-539330-A (GB)
Title: Improvements in or relating to composite board material
IPC: B32B13/14
Filed: 1940-03-04
Abstract: 539,330. Plasterboard. LEFEBURE, V., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 4, 1940,No. 4002. [Class 87 (i)] Plasterboard comprises a water-setting cement or plaster having composite liners comprising a textile mesh united to a paper liner by means of a thermoplastic ahhesive. The core may comprise a calcium sulphate plaster or cement, and the adhesive comprise bitumen, mixtures of coal tar and coal tar pitch, rosin or mixtures of rosin and rosin oil. Specifications 513,902, '[Group V], and 539.329 are referred to.
Patent GB-681733-A (GB)
Title: Improvements in stapling machines
IPC: B25C5/06
Filed: 1950-02-16
Abstract: 681,733. Stapling. REES, PITCHFORD & CO., Ltd., and LANGFORD, D. I. Feb. 1, 1951 [Feb. 16, 1950], No. 4006/50. Class 89 (iii). A stapling device is provided with a fullstroke mechanism comprising a spring-controlled pivoted pawl 9 which in one form, Fig. 1, is carried by a driver-operating lever 6 and cooperates with stops on the casing and in another form, Fig. 6, is carried by the casing and cooperates with stops on a driver-carrying bar 1a. As the lever arm 6a which engages with the driver 4 moves downwards, the pawl 9 snaps past a fixed pin 12 and can only re-pass the pin after it has been rocked to an inoperative position, in which it is retained by its spring 10, by engagement with a surface 13 at the end of the driving stroke. The pawl is returned to its operative position by engagement with a surface 14. The staples 15 are supported during driving by a guide plate 5 which is lowered by a spring 11 fixed to the lever 6, being held in its normal position by a spring-pressed ball 19. The lever 6 is operated by a spring-pressed pivoted hand-lever 1 and the anvil 8 is carried by an arm fixed to the main casing. A spring 21 prevents a staple from rising with the driver. In the form shown in Fig. 6, the pawl 9 co-operates with a pin 24, a surface 1b and a pin 25 corresponding to the pin 12 and surfaces 12 and 14. A hand knob 1 is provided on the driver-bar 1a which is raised by a spring 26.
Patent GB-1135126-A (GB)
Title: Time switch
IPC: G04C23/16
Filed: 1967-01-26
Abstract: 1,135,126. Time switches. BRAC A.G. 26 Jan., 1967 [1 Feb., 1966], No. 4007/67. Heading H1N. The switch has a continuously-rotatable 24- hour dial and two actuators rotatable therewith, the actuators each being associated with a gear-wheel selectively engageable by a pinion on a setting shaft, whereby the actuators may be adjusted. In one form, the actuators 14, 16 co-operate with a switching cam 18 and are carried respectively by gear-wheels 9, 8, gearwheel 8 being secured to the sleeve 7 of a disc 6. Serrations 12, 13 between dial-plate 1, disc 6 and gear-wheel 9 allow one-way adjustment of the actuators relative to the plate 1, but ensure they are driven by the plate. A pinion 22 normally engaging gear-wheel 9 may be moved axially to engage gear 8. Cam 18 may be manually rotated. Pointers 15, 17 attached to the gear 9 and disc 6 indicate switching times. In another form (Figs. 3, 4, not shown), the actuators project radially and their carriers both have serrations engaging with serrations on the dial-plate.
Patent GB-479561-A (GB)
Title: Improvements in or relating to apparatus for practising strokes with a tennis racket
IPC: A63B69/38
Filed: 1937-02-10
Abstract: 479,561. Tennis-practising apparatus. SCHMIDT, F. Feb. 10, 1937, No. 4016. [Class 132 (ii)] Apparatus for practising correct strokes with a tennis racket comprises a central support 12 to which are adjustably connected bars 11 and 11<1> preferably of T-section and shaped to correspond to the fore-hand and back-hand strokes respectively, mounted on which is a roller frame 22, pivotally connected with a U-shaped spring clip 27 in which the racket 28 can be clamped. A stroke begins at R<1>, the racket being guided round the curve until the roller frame reaches the stop or buffer 30 when, owing to its momentum, the racket is released from the clip 27, the reaction of the buffer 30 sending the roller frame back towards the starting point. A suspended ball 31 may be included in the apparatus.
Patent GB-1011400-A (GB)
Title: Improved electrical wire wound resistors
Inventor: JONES DAVID CHRISTOPHER
IPC: H01C1/14
Filed: 1964-01-30
Abstract: 1,011,400. Fixed resistors. RIVLIN INSTRUMENTS Ltd. Oct. 28, 1964 [Jan. 30, 1964], No. 4040/64. Heading H1S. A wire-wound precision resistor comprises a bobbin having a hollow central core terminated by insulating end cheeks 21, 22. Insulating rings 15, 16 on the core divide the wiring space into three sections, each ring having a pair of diametrically opposite slots 17, 18 and an arcuate groove in its periphery. Connecting wires 7, 8 enter the bobbin at its ends and extend to terminal points 19, 20 on the rings 15, 16. The start end 11 of the resistance winding is connected to the point 19 and extends along the arcuate groove of the ring 15 before passing to one side of the ring through the slot 17. The finish end 12 of the winding is connected to the point 20. The remaining slots 17, 18 serve for the passage of the winding from one section to another. The resistor is hermetically sealed in a casing 26. If desired, the ends of the wires 7, 8 may be bent as shown at 24, 25 and pass through radial grooves 23 formed in the end cheeks 21, 22. In a modification (Fig. 1, not shown) a single insulating ring divides the wiring space into two sections.
Patent GB-822451-A (GB)
Title: Improvements in or relating to the production of magnesium base alloys
Inventor: WHITEHEAD DEREK JAMES
IPC: C22C1/02
Filed: 1957-02-06
Abstract: Manganese and zirconium are simultaneously introduced into magnesium-base alloys by means of a salt mixture consisting of at least 5% by weight of MnCl2 and/or MnF2 and at least 5% of ZrCl4 together with at least one of the chlorides of the alkali and alkaline earth metals in amount at least 25% by weight of the mixture, the amount of ZrCl4 being 1 to 4 times the weight of MnCl2 and 1.3 to 5.4 times the weight of MnF2.  The mixture may also contain ZrF4.  If a fluoride is present an amount of MgCl2 is included at least stoichiometrically equivalent to the fluoride.  The salt mixture preferably contains:-ZrCl4 33-45%, MnCl2 33-12%, KCl 33-45%, BaCl2 0-20%.  The mixture may be used to form a master alloy which may consist of (1) a matrix phase of magnesium or of magnesium alloyed with one or more permissible elements, e.g. 30-70% of the alloy, (2) metallic particles containing manganese and zirconium embedded in the matrix, e.g. 20-60% of the alloy, (3) a salt phase mainly of MgCl2 with at least one alkali metal chloride, e.g. 1-20% of the alloy.  The production of alloys containing also thorium or rare earth metals is referred to and examples of alloys produced are Th 3.5%, Zn 2.25%, Zr 0.47%, Mn 0.17%, Mg the remainder; Th 3.5%, Zn 2.25%, Zr 0.51%, Mn 0.18%, Mg the remainder; Th 3.5%, Zn 2.25%, Zr 0.63%, Mn 0.16%, Mg the remainder.  Specifications 511,137, 759,411, 806,103 and 806,104 are referred to.