baber/WOPTO huggingface dataset:
Patent GB-1190363-A (GB)
Title: Variable Pitch Fans
Inventor: DAVIES STUART DUNCAN
IPC: F01D7/00
Filed: 1966-04-12
Abstract: 1,190,363. Gas turbine ducted fan engines; axial flow fans. DOWTY ROTOL Ltd. April 11, 1967 [April 12, 1966; May 25, 1966; Sept.12, 1966], Nos.16222/67, 15967/67 and 40544/66. Headings F1C and F1J. A variable pitch fan comprises a plurality of blades the pitch of which is adjustable during rotation of the fan under the control of a servo system housed, at least in part within a hub structure of the fan, means being provided for converting movement of an output member of a motor at a point near the axis of rotation into pitchchanging movement of the blades which are radially displaced from the rotational axis of the fan around the periphery of the hub structure. The invention is described with reference to the fan 1 of a gas turbine ducted fan engine the forward end of the compressor being indicated in broken lines at the right of Fig.1. The ducted fan comprises a rotary structure 20 formed in two halves 20a, 20b bolted together, the fan blades 2 having root portions 21 which are mounted for angular movement in bearings 23, 24 in the periphery of the structure 20. The fan duct is formed by an outer wall 3 and an inner casing, a fairing cone or spinner 12 being mounted at the forward side of the rotor assembly 20. A portion of air passing through the fan duct passes through duct 14 to the inlet of the engine compressor. A gear pinion 49 is mounted at the inner end of each blade root 21, the pinions 49 of all the blades being engaged by a large gear wheel 45, rotational movement of the gear wheel thus causing adjustment of the pitch of the fan blades. The fan rotor assembly is connected to the engine shaft through reduction gearing 15, the output shaft-28 of which has a flange 27 secured to rear casing structure 19 of the fan rotor assembly. The rear casing structure 19 together with forward casing structure 18 is secured to the structure halves 20a, 20b by means of bolts 30, the forward end of the forward structure 18 being closed by means of a cover 54. The structure 18 constitutes a hydraulic cyclinder 11 within which is disposed a piston assembly 7 and a cylindrical piston rod 36, the piston rod 36 being mounted on a cylindrical spigot portion 33 of the casing structure 19, the piston being constrained to move only axially by means of straight splines 35, 37. The hub portion 44 of the gear-wheel 45 is formed with internal helical splines 43 which engage corresponding external splines on the piston rod portion 36, so that as the piston 7 moves axially the gear wheel 45 is rotated through a small angle thus rotating the gear pinions 49 and so causing change of angular pitch of the fan blades 2. The gear-wheel 45 is supported within the assembly 20a, 20b by means of bearings 47. Supply of fluid to one side A or the other B of the piston 7 is controlled manually through a valve 6. The gear wheel 45 is formed with a series of arcuate slots 50 to allow passage of the clamping bolts 30. A reinforcing ring 55 is provided in the duct wall 3 around the ring of fan blades.
Patent GB-843906-A (GB)
Title: Production of stable polychloroprene
Inventor: ROSAHL DIETRICH
IPC: C08C3/00
Filed: 1958-12-16
Abstract: A solid polychloroprene containing water, obtained by the coagulation of latex is dried at 60-95 DEG C. by infra-red radiation having a maximum emission in the range 1-3m , preferably augmented by a current of hot air.  Wet polychloroprene sheet having a water content of 40-80% by weight and a thickness such that the dry weight is 150-500 grams per square metre is passed at a velocity of 2-10 metres per minute under a bank of infra-red radiators covering 10-40 metres having an emission capacity of 3-6 kilowatts per square metre and an emission maximum in the range 1,5-3m .  The plasticity remains unchanged.
Patent GB-1407964-A (GB)
Title: Insulated containers
IPC: B29C51/14
Filed: 1971-08-31
Abstract: 1407964 Cups D R G PACKAGING Ltd 17 Aug 1972 [31 Aug 1971] 40586/71 Heading A4A [Also in Division B5] A thermally insulated container e.g. a drinking cup, ice cream carton, plate or tray is produced by .thermoforming a laminate comprising two layers of polystyrene sandwiching a middle layer of foamed polystyrene, the laminate having been produced by coating a first layer of polystyrene with a foamable polystyrene composition, and placing a second sheet of unfoamed polystyrene on the foamable coating. In an example, a disposable vending cup is produced with stacking rings.
Patent GB-1506080-A (GB)
Title: Air motor power unit
IPC: F16H1/22
Filed: 1976-10-01
Abstract: 1506080 Rotary positive-displacement fluidmachines R E STARBARD 1 Oct 1976 [2 Dec 1975] 40736/76 Heading F1F A mechanical-power unit comprises air motors 21, 26, 31, 36.connected in series with one another, with regard to the air-flow, and driving a common output-shaft 14 through gears 17, 18, 24, 30, 35, 40, air-inlet fittings 22, 28, 33, 38 being inter-connected by pressure-equalizing lines 54, 56, 57. A valve 55 to regulate the air-flow may be incorporated in the line 54. An air-supply conduit 41 may be furnished with a pressure regulator (42) and a throttling valve (T), Fig. 4 (not shown). A universal joint (19), Figs. 1 and 2 (not shown), may be secured to the cuter end of the output shaft.
Patent GB-1005816-A (GB)
Title: Improvements relating to methods of and apparatus for the detection of flaws
Inventor: DOBBINS GEOFFREY DAVID ROSSER
IPC: G01N27/90
Filed: 1960-10-14
Abstract: 1,005,816. Eddy current testing apparatus. G. K. N. GROUP SERVICES Ltd. Oct. 13, 1961 [Oct.14, 1960], No. 40819/64. Divided out of 1, 005, 815. Heading G1N. The description is identical with that of Specification 1, 005, 815 but the claims are directed to a method and apparatus for testing workpieces for flaws comprising passing a high frequency current in a path around the perimeter of an element of area on the surface small compared with the area of the surface and disposed sufficiently closely and substantially parallel to the surface to induce eddy currents, disposing a plurality of pick up coils within the area, executing relative scanning movement between the workpiece and the coil system amplifying the voltages induced in the pick-up coils, and separating modulation components to develop a flaw signal.
Patent GB-1275979-A (GB)
Title: A rudder positioning unit for the steering systems of ships
IPC: G05D1/02
Filed: 1969-08-15
Abstract: 1275979 Electric correspondence control DECCA Ltd 15 Aug 1969 [16 Aug 1968] 40969/69 Heading G1N [Also in Division G3] To avoid instability in a rudder positioning unit a steering gear simulator is provided to supply a feedback signal, the simulator being slowly synchronized with the steering gear. A rudder positioning signal from a ship's wheel or autopilot applied to R1 is compared with a position signal of the simulator applied to R2 to produce a balance signal which is passed via relay amplifier 1 to operate the starboard SB or port P relays and start or stop the steering gear SG operating rudder R. The balance signal also connects the steering gear simulator, constituted by operator amplifier 2, capacitor C1 and resistor R4 connected as an integrator, via contacts of the respective relays SB or P to voltage sources +20V or -20V so that the integrator output, position, signal increases positively or negatively to simulate the movement of the steering gear and rudder. The output of the simulator and a signal from potentiometer P3 gauged to the rudder R indicating the true position of the steering gear are compared at the connection of resistors R6, R7. If a difference exists between these signals this is applied via resistor R5 to the integrator circuit to cause this circuit to drift very slowly towards the position of the real steering gear. If the difference between the positions of the simulator and steering gear exceed a certain valve e.g. if course is abruptly altered, one of diodes D3, D4 becomes conductive and the integrator is quickly restored to a working point at which the difference is below the certain valve. The value may be altered by potentiometer P2. The simulator may be connected to the voltage sources via electronic switches in response to output signal voltages of amplifier 1. The simulator may be electro-mechanical such as an electromotor driving the movable arm of a potentiometer.
Patent GB-1095211-A (GB)
Title: Improvements in the treatment of polygamma methyl glutamate and polygamma ethyl glutamate fabrics
Inventor: WILLIAMS ROBERT JOHN
IPC: D01F6/68
Filed: 1963-10-17
Abstract: The handle, crush resistance and liveliness of fabrics containing fibres composed of at least 90% by weight of an optically active form of poly-gamma-methyl glutamate or poly-gamma-ethyl glutamate are improved by treating the fabric while it is free from creases and free from tension with an aqueous solution of benzyl alcohol or an aqueous suspension of benzyl alcohol part of which is dissolved in the water present for a period of time sufficient to cause the fibres to swell and then removing the benzyl alcohol from the fabric.  When using a suspension of the benzyl alcohol a dispersing agent is generally added.  The aqueous composition may contain 5-20% by weight of benzyl alcohol and the treatment may be effected at temperatures over 50 DEG C.
Patent GB-959491-A (GB)
Title: Device for the automatic adjustment of a machine tool with a rotating spindle carrying a radially-adjustable tool holder
IPC: B23B29/034
Filed: 1961-11-16
Abstract: 959,491. Machine tool details; grinding. M. FRANK. Nov. 16, 1961 [Nov. 25, 1960], No. 41121/61. Headings B3C and B3D. An attachment for a boring or grinding machine to enable the tool or grinding wheel to be adjusted at right angles to the boring axis by a screwed spindle comprises a wheel which rotates the spindle due to engagement with a stationary member when the boring sleeve is retracted, and the stationary member is retracted by a cam. The attachment 4 is secured to boring spindle 2 by a chuck 3 and a tool holder 10 is slidably carried by a part 8. A screwed spindle 11 is axially fixed to a plate 15 on the holder but can rotate therein, and engages in a screwed bore of a gear-wheel 12 so that as the spindle is manually rotated, wheel 12 is held against rotation by a friction plate 13 and the tool holder is adjusted. Wheel 12 meshes with a gear-wheel 18 on a shaft 19 and a collar 19a on the latter forms a slipping clutch with a gear-wheel 21. Gears 29 mesh with gear 21 and have gears 26 rigidly secured thereto the peripheries of which project into a peripheral groove 28 in part 8. A plunger 30 is mounted in a crank cam 31 carried by a rod 32 and is spring urged towards spindle 2 by a spring 34, such movement being limited by an adjustable stop 48 and a bell-crank lever mechanism 40, 41 normally holds plunger 30 in an inoperative position. In operation when sleeve 1 is retracted, lever 40 strikes a stop 43 and plate 42 is released, thus allowing plunger 30 to engage part 8 below wheels 26. When a recess 47 is aligned with the plunger the latter is lifted into a groove 28 on part 8, thus rotating wheels 26 as they move past the plunger, and the tool is adjusted. The amount of rotation of wheel 26 is governed by the amount of advance of the plunger towards the wheels and cams 50 may be provided to retract the plunger after each wheel 26 has been rotated. To prevent the tool from removing too much material a stop 60 of holder 10 engages a stop 61 adjustable on part 8, whereupon clutch 19a, 21, slips. Gears 26 may be omitted and gears 29 would then be actuated by plunger 30.
Patent GB-880994-A (GB)
Title: Improved vulcanisable organopolysiloxane compositions
Filed: 1959-12-03
Abstract: A filled siloxane gum, capable of being rendered plastic after storage by a short period of mechanical plasticisation, comprises, by weight, 100 parts of an organopoly-siloxane gum, 20 to 90 parts of a silica filler having a particle size less than 100m m  and a specific surface area of at least 20m2/g, and 0,1 to 10 parts of menthol.  The compositions may be cured by heating with an organic peroxide. Preferably the crushed menthol is incorporated in the siloxane gum before the peroxide, silica filler and, if desired, other fillers, e.g. TiO2, CaCO3 and Al2O3, and additives such as diphenylsilanediol are added.  In examples comparative results are given of filled methyl-vinyl and dimethyl-siloxane gums containing menthol and similar compositions free of menthol.  Menthol was found to be more effective than camphor, terpineol, guaiacol, isoeugenol, thymol, borneol and terpine.
Patent GB-1353979-A (GB)
Title: Permeable supports
IPC: B01J8/04
Filed: 1971-09-03
Abstract: 1353979 Wire fabrics UGINE KUHLMANN 3 Sept 1971 [4 Sept 1970] 41220/71 Heading D1K [Also in Division B1] Permeable sheet material is supported on an "articulated cloth" comprising a plurality of parallel helices 1, the helices being formed of a refractory metal alloy and adjacent helices being 'screwed' through one another so that each helix is interlocked with the adjacent helix. The helices are stretched within a frame with an extension of aprox 2% in length in all directions in the plane of the array.
Patent GB-879393-A (GB)
Title: Control network for air conditioning units
IPC: F24F11/00
Filed: 1959-12-04
Abstract: 879,393. Air-conditioning control systems. SPECIALTIES DEVELOPMENT CORPORATION. Dec. 4, 1959 [Dec. 17, 1958], No. 41233/59. Class 118. An air-conditioning control system comprises means for generating and transmitting an ultrasonic signal, a microphone to detect the signal and means responsive to the difference in amplitude between the generated and received signals which serves to control the air conditioner. An oscillator 10, Fig. 1, for example a self-blocking Hartley type, Fig. 2 (not shown), which generates pulses at a frequency of 60 kc/s. at one second intervals, has its output electrically connected to a transmitter 11 which radiates ultrasonic energy into the enclosure 12. The amount of energy absorbed varies with the number of people in the enclosure and also with the amount of carbon dioxde present, as the radiated energy is of such a frequency as to be sensitive to the molecular relaxation of the air diluted gas. A microphone 13 receives the radiated signal and gives an electrical output to the amplifier 14. The transmitter and microphone may be electroacoustical transducers and the amplifier 14 a simple R.C. coupled adjustable gain type, Fig. 3 (not shown), so that the amplitude of the received signal can be adjusted and passed to a detector 15 together with a selected portion of the generated signal. The detector 15, Fig. 4 (not shown), is arranged to have an output proportional to the difference in amplitude between the generated and received signals by feeding a fixed portion of the generated signal to a rectifier across which a positive D.C. voltage is developed with respect to earth and the output from amplifier 14 is connected to a second rectifier across which a negative D.C. voltage is developed, the two voltages being added and the output applied to an amplifier 16 connected to a control device 17. The device 17 has an output capable of adjusting the controls of the air conditioning means 18, for example the speed of an air blower. If a large enclosure is to be ventilated it may be divided into sections, each section having its own air conditioning unit with a common central,transmitter, Fig. 7 (not shown). Specification 832,847 is referred to.
Patent GB-1367651-A (GB)
Title: Stereophonic phonograph pickups
IPC: H04R11/12
Filed: 1971-09-03
Abstract: 1367651 Stereophonic pickups W O STANTON 3 Sept 1971 [7 Dec 1970] 41299/71 Heading H4J A stereophonic pickup of the variable reluctance type comprises a circular array of three polepieces 40, 42, 68 (Fig. 3) which define a common space surrounding one end 108 (Fig. 4) of an armature 96 pivotally mounted at its other end 106. A cartridge body consists of two interfitting parts 16, 20 (Fig. 3) and two intermediate parts 18, 19 which serve as bobbins. Such parts are all formed of polystyrene and are moulded with interlocking portions, e.g. tongues and grooves 72 and 70, 76, 74. A magnetic circuit element 22 comprises a base 24, two core legs 26, 28, one for each channel, and a third leg 30 common to both channels. Polepiece members 36 and 38 abut the legs 26 and 28 respectively, within apertures 58 and 60 in the bobbins 18 and 19. The polepieces 40 and 42 are extensions of the polepiece members 36 and 38 and the polepiece 68 is an extension of the leg 30. The element 22 and polepiece members 36 and 38 are of high permeability material. Coils 46, 48 are wound on the bobbins 18, 19 and their outputs are connected to terminal pins 50a, 50b, 50c and 50d. Pins 50b and 50c are joined by a capacitor 52 to reduce cross talk. The pins 50a and 50d are earthed and connected to a shielding casing 11 of high permeability material. A single turn strap 53 of copper is provided about polepiece members 36, 38 and acts as an inductance coupling the magnetic circuits of the two channels to reduce cross talk and as an earth connection from the polepiece members 36, 38 to the casing 11. The pins 50a, 50b, 50c and 50d pass through holes in the body part 16. The moving armature 96 is a high permeability tube within a non-metallic tubular casing 98 of non- magnetic material. A stylus 100 is connected to armature 96 by a support tube 102. A rubber collar 104 on the end 106 of the armature 96 provides a pivot so hat this end of the armature 96, when the stylus vibrates, is substantially stationary relative to a permanent magnet 44 feeding the magnetic circuits and located in a groove 90 in the front of body part 20. The other end 108 of the armature 96 is vibrated by the stylus 100 in the common space between the polepieces 40, 42, 68 and thereby varies the magnetic flux through the magnetic circuits and the E.M.F. induced in the coils 46, 48.
Patent GB-942424-A (GB)
Title: Sealed package particularly for cigarettes
IPC: B65D55/08
Filed: 1961-11-21
Abstract: 942,424. Packages; boxes. PHILIP MORRIS Inc. Nov. 21, 1961 [Nov. 21, 1960], No. 41565/61. Headings B8C and B8P. A package, especially for cigarettes, comprises a thin moulded open-topped body 10 having a telescoping lid 12, the body being enclosed by a wrapper 13 stopping short at the lid-body junction and the junction being sealed by an adhesive tape 14. The lid may have a hinge 26 and weakened lines 27 enabling part to be raised when the tape is removed, or it may be taken off completely. A projecting portion of the tape assists removal. The body may be ornamented and the wrapper transparent. The cigarettes may be contained in an inner wrapper 16.
Patent GB-1282917-A (GB)
Title: Improvements in and relating to automatic water-flushing cisterns and ancillary apparatus
Inventor: HOOD GRAHAM FRANK
IPC: E03D5/02
Filed: 1969-08-21
Abstract: 1282917 Automatic water flushing installations G M G HEATING CO Ltd 17 Aug 1970 [21 Aug 1969] 41698/69 Heading E1C An automatic water flushing installation, of the kind embodying one or a number of flushing cysterns whose flushing action is effected automatically at predetermined intervals, includes a shut-off valve 18 which is normally held open by a spring but which engages a seat 16 to shut-off the supply to the cystern or cysterns when a coil 28 is energised to move a plunger.32 downwardly towards the seat 16, the coil 28 being energised automatically, during periods when a flushing action is not  required, by a time clock 34, which is preferably of the type comprising a synchronous motor drive including a reserve spring. The timer may form part of a programmer.
Patent GB-1119507-A (GB)
Title: New derivatives of glycyrrhetinic acid
Inventor: TURNER JOHN CAMERON
IPC: C07J63/00
Filed: 1966-09-20
Abstract: The invention comprises compounds of formula <FORM:1119507/C2/1> <FORM:1119507/C2/2> wherein R and R1 and H or hydrocarbon radicals (which may be substituted).  Compounds (I) are prepared by reacting free or appropriately esterified glycyrretinic acid or 3-keto-glycyrretinic acid or the free acid thus produced may be esterified e.g. with an appropriate diazo compound.  Compounds (II) may be prepared by reacting compounds (I) with a base in an aqueous solution whereafter if desired, the -COOR1 group (wherein R1 is H) which is formed is esterified e.g. with an appropriate diazo compound whereby when R in the -COOR is also a hydrogen atom, this is esterified at the same time. Alternatively, compounds (II) may be prepared by reacting compounds (I) with (i) sodium carbonate in aqueous alcoholic solution or (ii) an alkali metal alkoxide to give a compound in which R1 in the -COOR1 group corresponds to the alcohol or alkoxide respectively used, whereafter when R in the -COOR group of the starting materials is H this, if desired may be esterified as above.
Patent GB-1081149-A (GB)
Title: Pulse jet engine
IPC: F02K7/04
Filed: 1965-10-04
Abstract: 1, 081,149. Pulse jet engines; combustion chambers. PULSE JET CORPORATION. Oct. 4, 1965 [Oct. 5, 1964], No. 42072/ 65. Headings F1J and F1L. A pulse-jet engine comprises a primary combustion chamber 12, a secondary combustion chamber 15 and an exhaust outlet duct 17, 18, the primary combustion chamber being closed at its forward end by a cap member 13. A number of air inlet ducts 20 are provided, the forward portion 20A of each duct opening at 22 into the secondary combustion chamber, a fuel injector 24 being disposed at the outlet of the duct into the chamber. An igniter is provided at 25. Assuming the chamber 12 to be filled with a combustible mixture of fuel and air: upon firing of the igniter 25, combustion gases discharge through the secondary chamber and the outlet duct so as to create forward thrust. A portion of gases will discharge through the air inlet ducts 20 but as the main portion of gases discharge through the outlet duct 17, 18 a region of low pressure will be created within the primary combustion chamber and this will cause charges of air to be drawn in through the air inlet ducts 20, fuel being injected into the air streams through the injectors 24. This mixture will be fired in the chamber 12 and the cycle repeats. In a further embodiment the portion 21 of the air inlet duct is of convergent form in the direction of air flow. In a further embodiment each air inlet duct has an augmenter duct disposed adjacent the open air inlet end. As combustion gases discharge through the air inlet duct, ambient air is induced to flow through the augmenter duct thus increasing the forward thrust. In a further embodiment Fig. 4 (not shown) a forward-directed air inlet scoop is disposed at the inlet end of the air inlet duct. This arrangement ensures that the engine is self-starting. Such an air inlet scoop may be utilized with the other embodiments; alternatively compressed air from a storage bottle may be utilized for starting.