baber/WOPTO huggingface dataset:
Patent GB-1347297-A (GB)
Title: Multiplex actuator
IPC: B64C13/00
Filed: 1971-04-19
Abstract: 1347297 Controlling aircraft E-SYSTEMS Inc 19 April 1971 [2 Feb 1970] 20881/71 Heading B7G [Also in Divisions G1 and H2] A redundant channel, velocity summing, multiplex actuator for adjusting the position of a control surface 56 of an aircraft comprises four servomotors, Fig. 2 (not shown), each having a respective control amplifier receiving the same control signal 11 ... 14, which may be derived from the pilot's control stick or the autopilot, stability or navigation controls, two sets of differential gearing coupling respective pairs of motor shafts to a third differential gear set whose rotary motion is converted to linear movement of a rod 16, a dual tandem servovalve 18 responsive to movement of the rod 16 to vary the fluid pressure flow signals to a dual tandem power ram 20 connected by members 52, 54 to the surface 56, and a linear voltage differential transformer 57 responsive to movement of the piston-rod 52 to generate separate but equal position feedback signals 59 ... 62 which are applied to the control amplifiers to balance the signals 11 ... 14. Fig. 4 shows a pair of the servomotors which are combined with respective tachometer and brake members to form units 150, 160 mounted on a housing 152. The motor shafts are coupled to a differential 158 by gears 154, 156, 164, 166, the differential 158 being coupled to a differential 176 by gears 172, 174. Another gear 178 of the differential 176 is coupled to a third differential (not shown) receiving the drives from units (not shown) similar to the units 150, 160. The shaft 182 of the differential 176 rotates with a speed equal to the velocity sum of the four units and engages the lead-screw 186 of a ball-screw assembly, whose ball nut 192 is restrained from rotation by retaining pins 194, 196 and is fixed to an extension shaft 198 terminating in a rod end 200 coupled to the rod 16 in Fig. 1. The rod end 200 is moved to a neutral position, in the event of failure of the actuator, by means of a centring assembly including a carriage 202 fastened to extension 198 by a nut 204, the carriage 202 moving with the nut 192 during normal operation. Upon actuator failure a spring 206, maintained in a housing 208 by spring guides 210, 212, forces the nut 192 to a centre position. To allow spring 206 to act on the actuator output, at least one brake must be released to allow back-driving the mechanism. Connectors 214, 216 transmit the control, feedback and velocity signals in the respective motor, amplifier and tachometer circuits. Operation of an arrangement, Fig. 3 (not shown), similar to Fig. 4, is discussed for failure of one, two or three of the servomotors, the or each failed motor preferably being stopped by its brake to prevent it being dragged by the remaining operative motor of the affected pair. Another similar arrangement, Fig. 5 (not shown) is discussed with respect to gear ratios, velocities and variation of the number of servomotors and gears. Gearing other than differential may be used to couple the servomotors which may be odd instead of even in number.
Patent GB-898332-A (GB)
Title: Process for regulating the function of a nuclear reactor and installation for carrying it into effect
IPC: G21D3/14
Filed: 1958-07-01
Abstract: 898,332. Nuclear power plant. COCKERILLONGREE S.A. July 1, 1958 [July 1, 1957], No. 21040/58. Class 39(4). A nuclear power plant is controlled by automatically regulating the flow of primary coolant to be proportional to the amount of useful vapour produced. The coolant may be liquid or gaseous and may also be a moderator or a solution or suspension of fissile, fertile or moderating material. If there is no evaporation of primary coolant, the coolant flow is made proportional to the rate of production of vapour in a primary heat exchanger. A coolant pump is driven by a low-expansion turbine in the main vapour flow, or by an electric motor or by a full-expansion turbine running on vapour bled from the main flow, the last two having controls operated by a vapour flow meter. If a liquid primary coolant such as water is allowed to vaporize, similar regulation is used, proportional to the coolant vapour flow. In Fig. 5 coolant enters at 1 a reactor where it acts also as moderator and reflector; coolant vapour leaves at 7, drives a low-expansion turbine i and is condensed in a heat exchanger m<SP>1</SP>. The condensate is pumped back to the reactor by pumps k<SP>11</SP>, h driven by the turbine. Unevaporated coolant flows down outside the reactor core and leaves the reactor at 2, joining the condensate at the pump h. A by-pass pump r is provided for starting. An apparatus f<SP>1</SP> controls the coolant level and pressure in the reactor by operating a valve d<SP>1</SP>. The pump and turbine may be mounted in a common fluid-tight vessel. Any part of the plant may be duplicated and the reactor may be divided into regions each with its own coolant circuit.
Patent GB-692774-A (GB)
Title: Solutions of substituted ammonium salts
Inventor: POUND DENIS WILLIAM
IPC: C07B39/00
Filed: 1949-08-12
Abstract: A solution useful for introducing fluorine into organic compounds comprises a solution of a hydrofluoride of an organic nitrogen-containing base or the fluoride of an organic quaternary ammonium radicle, in an inert solvent not completely miscible with water which is a chlorinated aliphatic hydrocarbon containing at least one hydrogen atom.  Solutions of substituted ammonium salts are made by reacting ammonium or potassium fluoride in the presence of water with a solution in the inert solvent, of a substituted ammonium salt derived from an organic nitrogen-containing base or organic quaternary ammonium radicle and from an acid, which acid forms with the ammonium or potassium ion a salt which is less soluble in the reaction mixture than is the fluoride used.  Alternatively the dry fluoride is added to the substituted ammonium salt dissolved in the inert solvent before or after the addition of sufficient water to the organic phase to allow the reaction to proceed sufficiently towards the production of the organic fluorine compound.  Preferably the substituted ammonium salt has a cation containing at least six carbon atoms and preferably the base is of strength not less than that of pyridine.  The reaction mixture may be used for fluorination with or without prior isolation although separation is required where an aqueous phase would lead to an undesired hydrolysis.  In examples, aqueous potassium fluoride is added to methyl dibutylamine hydrochloride in (1) chloroform, (4) trichloroethylene, (5) methylene dichloride, and (6) tetrachloroethane, and to (2) diethyl cyclohexyl- and (3) triethyl-amine hydrochlorides, and (7) tetraethyl ammonium chloride in chloroform and the resultant products used to fluorinate bis-dimethylaminochloro-phosphineoxide to the corresponding fluoro-compound.  Specification 688,760 is referred to.
Patent GB-982726-A (GB)
Title: Preparation of ª‰-(hydanto-5-yl)-propionaldehyde phenylhydrazone
IPC: C07D233/72
Filed: 1963-05-27
Abstract: The invention comprises b -(hydanto-5-yl) propionaldehyde phenylhydrozone of the formula <FORM:0982726/C2/1> It is prepared by reducing 5-cyanoethylhydantoin in aqueous acid solution in the presence of a Raney-nickel catalyst, under a hydrogen pressure of 1 to 70 kg./cm.2 at 5 DEG  to 50 DEG  C. and reacting the b -(hydanto-5-yl) propionaldehyde with phenylhydrazine.  The acid may be acetic, formic, propionic, tartaric, or phosphoric acid present in amounts of from 2 to 10 moles per mole of 5-cyanoethylhydantoin used. The aqueous medium may be water, aqueous methanol, ethanol or dioxane.  The nickel catalyst is used in amounts of from 1/4 to 1/2 the amount by weight of 5-cyanoethylhydantoin, and lead or lead ions in amount of at least 2% by weight may also be present. Specification 982,727 is referred to.
Patent GB-427714-A (GB)
Title: Improvements in or relating to the production of inks
IPC: C09D11/02
Filed: 1933-07-27
Abstract: 427,714. Inks. DU PONT DE NEMOURS & CO., E. I., Wilmington, Delaware, U.S.A. July 27, 1933, No. 21131. Void [Abridged as open to inspection under Sect. 91 of the Acts, Jan. 29, 1934]. [Class 146 (iii)] An ink, particularly for use in imitating wood-graining on metal articles coated with cellulose ester compositions, is prepared by dispersing a colouring-material in a vehicle comprising a water-insoluble resin dissolved in a relatively high-boiling solvent having substantially no action on cellulose esters, and preferably not miscible with water. The solvent has a boiling-point between 150 and 230‹ C., and a dispersive action on the pigments and may be terpineol, an aliphatic alcohol such as lauryl or hexyl alcohol, or borneol, cineol, or fenchyl alcohol. In addition, a low boiling solvent i.e. having a boiling-point of 90- 150‹ C., to regulate the drying period and having little solvent-action on cellulose esters may be added, amyl, propyl, and butyl alcohols being specified, but this is not necessary particularly if a high-boiling solvent with a boiling- point of about 150‹ C. is used. The resin is preferably a wax-free shellac, although other shellacs, or acaroid, lauri, elemi, or copal can be used ; if it be desired to employ damar, cumar, or a rosin modified phenol-formaldehyde resin, high flash-point naphtha or kerosene is used as the high boiling solvent, and toluol as the low boiling solvent. In examples, pigments are dispersed in a solution of wax-free shellac in terpineol or a mixture of terpineol and amyl alcohol.
Patent GB-451808-A (GB)
Title: Improvements in excavators
IPC: E02F3/407
Filed: 1935-07-25
Abstract: 451,808. Excavators. DEMAG AKT.- GES., 64, Werthauserstrasse, Duisburg, Germany. July 25, 1935, No. 21141. Convention date, Aug. 2, 1934. [Class 68 (i)] A scoop arm excavator comprises a pivoted jib 2 on which swings an arm 3 to which the scoop 4 is pivoted, the latter being locked against backward movement during excavating by a spring bolt 17 which is controlled as through levers by the tipping rope 7 which passes by pulleys 16, 15, 14 to means for taking up slack such as a spring or weight loaded pulley block system 11, 13. The rope 7 is finally secured to the larger diameter of a differential drum 9 which may be driven in winding direction by a winch 8 and cable 7a; upward movement of the lower pulleys 11 is limited by a resilient stop 13<a>. After digging, the drum 8 is braked and the jib raised by cable 5, the scoop then swinging freely and the weight of the load drawing off cable from the pulley block system 11, 13. After hoisting, the winch 8 is driven to tip the scoop.
Patent GB-1304327-A (GB)
IPC: G03C5/315
Filed: 1971-04-19
Abstract: 1304327 Substituted dioxanes FUJI PHOTO FILM CO Ltd 19 April 1971 [2 Feb 1970] 21177/71 Heading C2C [Also in Divisions C3 and G2] Dihydroxy-dioxanes for hardening gelatine of formula (in which R 1  and R 2  are each H, alkyl, aryl. haloalkyl, alkoxyalkyl or aryloxyalkyl; one of R 3  and R 4  is H, CH 3  or C 2 H 5  and the other is CH 3  or C 2 H 5 ), are prepared by reacting a 1,2- dihydroxyalkane or derivative with a monoalkylglyoxal or 1,2-diketone.
Patent GB-653132-A (GB)
Title: Improvements in and relating to hydraulic servo mechanisms
IPC: F15B7/00
Filed: 1948-08-13
Abstract: 653,132. Retractable undercarriages. BOULTON PAUL AIRCRAFT Ltd., and MILLARD, D. J. Aug. 13, 1948, No. 21344. [Class 4] A. hydraulic system for operating a retractable undercarriage including a retractable component and a fairing therefor comprises separate double-acting jacks W, F for operating the component and fairing respectively, a pair of supply pipe-lines for each jack, a non-return valve w in one pipe-line of the componentoperating jack W, which valve is normally closed but is opened by the fairing jack F when the latter has completed its movement to open the fairing, and a second non-return valve f in one pipe-line of the fairing-operating jack F, which is also normally closed but is opened by the component-operating jack W when the latter has completed its movement to retract the component. In the case of a tricycle undercarriage, three component -operating jacks and a similar number of fairing jacks are arranged in parallel with a common pressure liquid source, Fig. 2 (not shown).
Patent GB-707660-A (GB)
Title: Improvements in gyroscopic instruments
Inventor: MEREDITH FREDERICK WILLIAM
IPC: G01C19/44
Filed: 1951-09-11
Abstract: 707,660. Gyroscopic apparatus. SMITH & SONS (ENGLAND), Ltd., S. Aug. 26, 1952 [Sept. , 11, 1951], No. 21358/51. Class 97(3) A gyro-vertical includes a mass supported by the inner gimbal and assuming a first position relative to said gimbal when the rotor is idle and a second position relative to said gimbal when the rotor is rotating, the mass being arranged on the gimbal so that in its first position the centre of gravity of the rotor and gimbal assembly is so situated that the upper end of the rotor axis lies in a preferred quadrant while when the mass is in its second position the assembly is in substantially neutral equilibrium about the gimbal axes. The preferred quadrant is one of that pair of quadrants into which the plane containing the inner and outer gimbal axes can be divided, which, when viewed from above, can be swept out by rotation, in the same sense as the rotor, of a line from co-incidence with the inner gimbal axis to co-incidence with the outer gimbal axis. In the form shown, the rotor case 4 constitutes the inner gimbal and the rotor 5 is mounted therein for rotation about axis 13. An annular electromagnet 7 is secured to the rotor case and the axis thereof is set at 45 degrees to the rotor axis 13, while the plane containing the axis of the electromagnet and axis 13 makes an angle of 45 degrees with the plane 11 of the gimbal axes. The winding 8 of magnet 7 is energized when the rotor motor is energized and attracts an annular armature 9, spring-loaded away from the electromagnet at 14, to bring the centre of gravity C.G. of the assembly into the plane 11 of the gimbal axes.
Patent GB-466080-A (GB)
Title: Improvements in and relating to apparatus for gravity determinations
IPC: G01V7/08
Filed: 1936-08-04
Abstract: 466,080. Automatic control systems. TRIGGS, W. W. (Bolidens Gruvaktiebolag) Aug. 4, 1936, No. 21424. [Class 38 (iv)] [Also in Groups XX and XIII] Temperature.-An instrument for measuring the force of gravity of the type in which the weight of a movably mounted body is counterbalanced by a spring or by electric or magnetic force is enclosed in two or more Dewar's vessels between which an automatic temperature regulator is disposed. The instrument 2 may be placed in a Dewar's vessel 1 surrounded by a larger Dewar's vessel 8, an automatically controlled electric heater 9 and a fluid, e.g. a hydrocarbon, being placed in the space between the two vessels 1, 8.
Patent GB-949501-A (GB)
Title: A transducer for the non-destructive testing of plate bonds (particularly adhesive bonds)
IPC: G01N19/04
Filed: 1960-06-17
Abstract: 949,501. Piezo-electric crystal holders. KONINKLIJKE NEDERLANDSE VLIEGTUIGENFABRIEK FOKKER N.V. June 17, 1960 [May 13, 1960], No. 21435/60. Heading H1E. [Also in Division H4] An electro-mechanical transducer (particularly for testing the shearing strength of bonds between plates) comprises a barium titanate disc 2 provided with mutually insulated and metallized electrodes 5, 6, and holding means for the disc consisting of a metal pin 3 engaging the interior end face of the disc and a spring 4, the cylindrical surface of the disc having longitudinal grooves 7 terminating above its interior end face and co-operating with some play with the end pieces 8 of metal strips 9. Electrode 6 continues to the lower ends of grooves 7. It is stated that radial disc vibrations are substantially undamped.
Patent GB-1086174-A (GB)
Title: Improvements in or relating to apparatus for obtaining a time analogue of a variable current or voltage
Inventor: UNDERWOOD DENNIS
IPC: H03M1/00
Filed: 1963-05-29
Abstract: 1,086,174. Electric selective signalling. PLESSEY-U.K. Ltd. June 18, 1964 [May 29, 1963], No. 21521/63. Heading G4H. [Also in Division H4] Apparatus for deriving a time analogue of a current or voltage comprises a comparator for comparing the amplitude of a current or voltage with a reference current or voltage having a recurrent waveform which changes in amplitude linearly with time during reach cycle of the waveform and producing an output via a bistable device consisting of a tunnel diode immediately after equality of the two currents or voltages occurs. As shown in Fig. 3, the output V s  of a thermocouple 20 is supplied via a resistor 23 to a tunnel diode 24 together with the output V r  of a sawtooth generator via resistor 25, a forward bias being applied through resistors 51, 52. Initially the forward bias is set by resistor 51 to bring the working point of diode 24 close to the low-voltage current peak of its characteristic and the diode switches to its high-voltage state to provide the leading edge of a duration modulated pulse when the difference between the opposing currents due to V s  and V, changes in polarity and carries the working point over the low-voltage current peak. The duration modulated pulse is terminated at the fly-back of the sawtooth wave. The potential across the tunnel diode causes a normally non-conducting transistor 45 to conduct when the tunnel diode switches to its high voltage state, the corresponding duration modulated output pulses at terminal 46 being supplied to gate pulses from a clock pulse generator to a counter for the duration of each pulse. Control pulses V c  are supplied via diode 49 to inhibit the operation of the comparator to permit the sampling of a number of difference transducers associated with a common counter and sawtooth generator and to ensure correct synchronization, Fig. 8 (not shown).
Patent GB-121950-A (GB)
Title: Improvements in or relating to Pneumatic Wheels.
Inventor: SEMERY JEAN MARIE CHARLES
IPC: B60B9/20
Filed: 1918-12-23
Abstract: 121,950. Semery, J. M. C. Dec. 22,1917, [Convention date]. Spring wheels with continuous flexible tread .and hollow wheel body forming fluid chamber.- The body of the wheel forms a fluid chamber 4 communicating freely through apertures 5, 6 with the inner tube 3 of the ordinary pneumatic tyre. The side disks 1, 2 of the wheel body may be curved, plane, or conical. The fluid is introduced through a valve 7, and in the case of a twin-tyre wheel, Fig. 5, there may be an additional valve 7<1> passing through one fluid chamber 4<1> to the other 4.
Patent GB-745092-A (GB)
Title: Improvements in or relating to oedometers
Inventor: BUTTON SIDNEY JOHN
IPC: G01N3/10
Filed: 1953-08-05
Abstract: 745,092. Compressing samples of soil. GROUND EXPLORATIONS, Ltd. Aug. 5, 1954 [Aug. 5, 1953], No. 21572/53. Class 106 (2). The soil sample 10 is contained within a ring 11 between two porous stones 12, 17 fitting within rings 13, 18, respectively, the upper stone and ring being engaged by a plate 19 abutting against a metal ball 20 seated in a cross-beam 22 and the lower stone resting on the base of a liquid container 14. The sample is held in the container by a locating ring 15 and is subjected to the action of water in the container, the water passing to the stone 12 through grooves 14a. The base of the container is attached by a connecting-rod 28 to a piston 26 housed within a cylinder 27 and subjected to fluid pressure from 'a source (not shown) via valve 29 and fluid line 30. The valve 29 has an outlet port 29b connected to line 30, an inlet port 29a connected to the source and a relief port 29c. The valve comprises a plunger.31 bearing a loading weight 32 and the arrangement is such that if the fluid pressure is greater than that of the weight 32, the plunger 31 rises so that the relief port is opened until the pressure falls to the required value whereat the plunger will come to rest in a position with both ports 29a and 29c closed. As the soil sample is compressed the base of the liquid container moves vertically upwards and the movement is recorded on a drum 36 by a stylus 35 operated through levers 33, 34.
Patent GB-1406446-A (GB)
Title: Presses and die-set actuators
IPC: B30B1/08
Filed: 1972-05-10
Abstract: 1406446 Punching COLEY-ROTOLIN Ltd 9 Aug 1973 [10 May 1972] 21759/72 Heading B3W A press or die set actuator has a fixed die or other tool support 3, a movable punch or other tool support 22 and first and second reciprocable drive means 10 and 31 respectively. Means 10 comprise a hydraulic cylinder and piston unit 11, 12 which pivots a rocker 17 connected to the support 22 by a coupling 18, 19. Means 31 comprise a double-acting pneumatic cylinder connected to a pair of links 26, the other end of which is connected to the pivot rod 25 of the rocker 17. A rod 27 coupling the upper ends of the links 26 is journalled at each end in slots 28 in the press, &c. frame so that movement of the rod 27 to the right hand end of the slots moves the pivot axis 25 away from the die support 3. The next stroke will then be a long one, movement of the rod 27 to the left by cylinder 31 to lower the pivot 25 being followed by action of the cylinder 10 to complete the lowering of the plate 22. The return movement of the rocker 17 is actuated by a spring 13. For short strokes, the cylinder 31 keeps the link 26 in the vertical position. The coupling 18, 20 is of adjustable length. The apparatus is intended particularly to be used for setting up a die set for transfer to a press.
Patent GB-937914-A (GB)
Title: Improvements relating to endless belt conveyors
Inventor: DUNCAN ANGUS WELLESLEY
IPC: B65G39/16
Filed: 1961-06-16
Abstract: 937,914. Idler rollers for endless belt conveyers. MINING ENGINEERING CO. Ltd. May 17, 1962 [June 16, 1961], No. 21777/61. Class 78 (1). A troughing idler assembly includes two side rollers 12, 13, each formed by a helically-coiled spring and each of substantially the same diameter as a central roller 10 mounted on a rigid spindle. The two spring side rollers are wound right and left-hand respectively to maintain the belt in a central position. Each spring engages a helical groove in the periphery of a ball-bearing housing 16, the end of the spring being looked or staked. The remainder of the periphery of the housing is formed with annular grooves 17. A ball-bearing is mounted on a spindle 19 which is connected by a link 11 to the adjacent end of the spindle of the central roller 10. The spindle projecting from the outer bearing housing has a spherical trunnion member 28 which seats in a bracket 29 bolted to a longitudinal tubular stringer 31. The extension of the springs 15 under load is controlled by cables 31 which are coupled to the bearing housings 16 by split pins 32.