baber/WOPTO huggingface dataset:
Patent GB-1340773-A (GB)
Title: Control sysstems for gas turbine power plant
IPC: G05D13/62
Filed: 1971-05-24
Abstract: 1340773 Automatic control of turbines GENERAL ELECTRIC CO 24 May 1971 [28 May 1970] 16652/71 Heading G3R A gas turbine power plant has a compressor 2, combustion chamber 3 high-pressure turbine 4 and a load turbine 5 on a separate shaft 6 coupled through gears 7 to a variable pitch marine propellor 8. The turbines are aerodynamically coupled through a variable area nozzle 9. The fuel supply to an injector 12 is set by a fuel control 16, adjusting the stroke of a pump 15, responsive to a low value gate, comprising diodes 18. As disclosed in Specification 1254595 see Division G3 the low value gate is responsive to control devices for temperature 21, acceleration 22, and open-loop start-up 23. An additional control signal is produced through a gate diode 18 by a power control loop 24. The control loop 24 comprises an operational amplifier 40 responsive to a power set point reference voltage from a selected bridge or engine room lever 34, 35 through a speed linearising cubic function generator 39. Further amplifier inputs are 1) a feedback signal derived from a fuel flow multiplier 42, responsive to compressor speed and the fuel control signal on a fuel control Signal line 19, 2) a minimum fuel flow signal from a reference source 46 and 3) a transient feedback signal through a capacitor 48 from the line 19. A propellor pitch control 51 is also provided comprising a servo-valve 54 adjusted by an operational amplifier 53 responsive to a feedback signal from an L V D transformer 55 and a control signal from an operational amplifier 56 responsive to the signal selected by the lever 34, 35, and a signal from an operational amplifier 67 responsive to the speed of the load turbine 5 as sensed by a transducer 28. The amplifier has feedback applied through a capacitor 67 and for movement astern an inverting operational amplifier is inter-connected through a contactor 68. The operation of the pitch and speed control circuits is modified b, a mode switch 49 actuating contactors whereby to reduce power to 25% in a docking mode D and giving a higher minimum power level in a sea mode S, than in a manoeuvring mode M.
Patent GB-1125842-A (GB)
Title: Chlorofluorophenyl-nitrophenyl ethers and their use as herbicides
IPC: A01N33/22
Filed: 1966-04-15
Abstract: 1,125,842. Halophenyl-nitrophenylethers. MITSUI KAGAKU KOGYO K.K. 15 April, 1966 [15 April, 1965], No. 16688/66. Heading C2C. [Also in Division A5] The invention comprises compounds of the formula where X is H or Cl, one Y is F, the other is Cl. The compounds are prepared by reacting a p-halonitrobenzene with an alkali metal salt of a chlorofluorophenol.
Patent GB-919096-A (GB)
Title: Polyamides based on aromatic dicarboxylic acids
Inventor: GABLER RUDOLF
IPC: C08G69/26
Filed: 1961-05-08
Abstract: A process for the production of linear polyamides comprises (A) condensing isophthalic acid or a mixture thereof with terephthalic acid with a substantially equimolar proportion of a substituted hexamethylene diamine having one or more of its methylene groups substituted by alkyl groups to give three or more side chain carbon atoms or (B) condensing tere- and/or iso-phthalic acid with a substantially equimolar proportion of a mixture of substituted isomeric hexamethylene diamines each having one or more of its methylene groups alkyl substituted to give three or more side chain carbon atoms and each having the same type and number of side chain alkyl groups.  The polycondensation may be effected in an inert solvent, e.g. N-alkyl-pyrrolidone, N-alkyl-piperidone, in a non-solvent liquid or by the interfacial condensation method.  The examples describe the preparation of linear polyamides from:- (I) terephthalic acid and an isomeric mixture of 2:2:4- and 2:4:4-trimethylhexamethylene diamine; (II) terephthalic acid and an isomeric mixture of 2-methyl-4-ethyl- and 2-ethyl-4-methylhexamethylene diamine; (III) isophthalic acid and an isomeric mixture of 2:2:4- and 2:4:4-trimethylhexamethylene diamine; (IV) isophthalic acid and an isomeric mixture of 2-methyl-4-ethyl- and 2-ethyl-4-methylhexamethylene diamine; (V) isophthalic acid and 3-isopropylhexamethylene diamine; (VI) and (VII) tere- and iso-phthalic acid and an isomeric mixture of 2:2:4- and 2:4:4-trimethylhexamethylene diamine; (VIII) tere- and isophthalic acid and 3-isopropylhexamethylene diamine and (IX) iso- and tere-phthalic acid and 3-isooctylhexamethylene diamine. The products of the invention are soluble in mixtures of chloroform with methanol.
Patent GB-671188-A (GB)
Title: Improvements in and relating to systems of underground communication
IPC: H04B5/00
Filed: 1950-07-05
Abstract: 671,188. Inductive signalling. PICKERING, A. V. July 5, 1950 [July 13, 1949], No. 16765/50. Drawings to Specification. Class 40 (v). A system of underground communication comprises a high-frequency modulated carrierwave radio transmitter, a radio receiver, and an untuned and unterminated carrier wire insulated from electrical contact with the earth, or with any source of power and extending from a point adjacent the transmitter to a point adjacent the receiver, the receiver and transmitter each being provided with an aerial or the functional equivalent thereof arranged to form a loose coupling with the carrier wire. As installed in a mine, the radio receiver is situated at a convenient point undergound and the carrier wire extends along the sides of the galleries to the furthest points at which communication is required, the receiving set being mounted on a truck or locomotive, and having an aerial extending parallel to the carrier wire and spaced about a foot therefrom. Alternatively, the aerial may be in the form of a flat coil. Instead of being mounted on a vehicle the receiver may be carried by a pedestrian. The transmitting station may have a radio receiver and the movable station a transmitter, to provide twoway communication and where there are several movable stations independent communication with each is provided by using different radio frequencies. A carrier frequency of the order of 5 megacycles is used. When the transmitter receiver is installed on a battery driven electric locomotive it may be supplied by a 24-volt secondary battery connected through a rectifier to appropriate tappings on the main battery, so that should the main battery run down, power for the transmitterreceiver is provided by the 24 volt battery, and when the main battery is charged the 24-volt battery is also charged through the rectifier.
Patent GB-111302-A (GB)
Title: Improvements in Skates.
Inventor: CLARK CHARLES HASKELL
IPC: A63C17/04
Filed: 1917-11-15
Abstract: 111,302. Clark, C. H. Nov. 15, 1916, [Convention date]. Skates.-To facilitate travelling on roads, a skate is fitted with a front wheel 2, Fig. 1, on the inside and a rear wheel 4 on the outside of the frame 6, and a brake 26 operated by a pivoted brace or arm 18 which acts to support the ankle of the wearer is provided. The brake is applied by making a slight additional forward movement of the foot in excess of the normal stroke. Toe-clamps 10 and a heel-strap 14 are fitted to the foot-rest 8. The brace 18 carries a crank-arm 24 at its lower end with a brake-roller 26, and is connected at its upper end to a band 20 carrying an ankle-strap 22. In a modification, Fig. 3, the front wheel 2 and the foot-plate 8 are pivoted to the frame 6 to facilitate steering, and the brake-disk 32 is operated by arms 36, 38 and a link 34 from the brace 18. When the brace 18 is rocked, a pin 45, Fig. 5, carried by the hub 40 of the disk 32 moves in a groove 44 in the spindle. and the disk 32 is forced against the web 47 of the rear wheel.
Patent GB-797681-A (GB)
Title: Finely divided dispersible asphaltic composition and method of making it
IPC: C08L95/00
Filed: 1955-06-10
Abstract: A dry bituminous composition, the majority of which passes 300 U.S.S. mesh, which, after wetting, is spontaneously dispersible in water, comprises, in parts by weight, friable asphaltic material-100; dispersing agent-3 to 25; protective colloid-2 to 10.  The asphaltic particles are mainly flat.  Specified dispersing agents are: organic sulphonic acids and their salts; ligno-sulphonate salts; a water soluble soap; polyoxyethylene stearate; sorbitan tristearate; sulphated fatty alcohol; sulphonated alkyl-phenoxyethanol; and inorganic colloids, e.g., fuller's earth, bentonite and other clays; singly or in admixture. When inorganic agents are used one of the organic dispersants should also be present.  Colloids specified are gum, glue, casein, resins with or without alkali naphthenate, flour proteins, pectins, polysaccharides, hemi cellulose, tannins, albuminoids, albumin, alginates, starch, and gelatin.  The blending of certain incompatibles, e.g., vinyl compounds and rubber, can be brought about by the addition of, e.g., 0,5 to 15 per cent of the bituminous composition.
Patent GB-951102-A (GB)
Title: Hydraulic power supply system
Inventor: SADLER FRANCIS ANTONY DAWSON
IPC: F15B1/26
Filed: 1959-05-19
Abstract: 951,102. Hydraulic apparatus. GIRLING Ltd. May 13, 1960 [May 19, 1959], No. 16898/59. Heading FIP. [Also in Division F2] An hydraulic power supply comprises a pump 4 for drawing fluid from a reservoir 1 and delivering it to an accumulator 7 disposed within the reservoir. The arrangement may be mounted in a vehicle for supplying brakes, steering or other mechanism, the pump, which has at least its body in the reservoir and may be of the constant or variable-delivery type, being driven from the engine or part of the transmission and drawing fluid through a filter 6 for supply to the accumulator which may be of the flexible diaphragm type using a compressed gas, or the flexible container type. A regulating valve 8 controls the pressure in the accumulator. The outlet of the accumulator is connected by a pipe 10 to a connection 11 which may be joined to the inlet port 20 of a valve controlling the brakes of the vehicle. The brakes are operated by a foot-pedal 13 which pivots a crank 14 to move a plunger 15 against a spring 16 abutting a pressing 17 engaging the end of a valve spool 18. Where the pedal is moved, the spool is moved and a reduced portion 22 of the spool opens the inlet port 20 so that fluid flows through radial ports 23, passage 24 and outlet 21 to the brakes. The fluid pressure acts on the lower end of the spool to provide "feel" for the operator. When the pedal is released the spool moves so that the reduced portion uncovers an exhaust port connected to the reservoir.
Patent GB-596996-A (GB)
Title: Improvements in or relating to fluid pressure governors
IPC: G05D16/16
Filed: 1945-07-03
Abstract: 596,996. Fluid-pressure servomotorcontrol systems. GAS LIGHT & COKE CO., and THOMSON, S. M. July 3, 1945, No. 16924. Addition to 525,226. [Class 135] The counterbalancing mechanism of the parent Specification is eliminated by arranging the diaphragms 22, 23 close together and forming the valve 10 from a light alloy. The rod 14 is connected to the diaphragm 22 by a universal joint 24, and a high-pressure service governor 34 is introduced between the inlet conduit 12 and the auxiliary governor 31.
Patent GB-904084-A (GB)
Title: Production of chlorinated hydrocarbons
IPC: B01J8/24
Filed: 1961-05-10
Abstract: Chlorinated hydrocarbons are prepared by establishing in a reaction zone or bed containing metal halide oxychlorination catalyst impregnated on a carrier or support in the form of particles, introducing chlorine and/or hydrogen chloride together with an aliphatic C1-4 hydrocarbon and/or partially chlorinated derivative thereof into the lower part of said bed, introducing an oxygen-containing gas into the bed at a level above the level of introduction of the aforesaid reactants; withdrawing products of the resulting reaction from the upper portion of the bed; and maintaining the rate of flow of chlorine and/or hydrogen chloride, oxygen, and hydrocarbon and/or chlorohydrocarbon sufficiently high to suspend the catalyst particles above the level of oxygen introduction.  The catalyst particles may be completely fluidised.  Up to 25% of the oxygen may be introduced into the bed with the organic reactant and chlorinating agent; the remaining oxygen is fed as indicated above, using one or more feed points.  Reaction temperatures are generally 570 - 930 DEG F.  The reaction zone may be cooled.  Suitable metal halide catalysts are chlorides of Cu, Fe and Cr, alone or in combination with alkali metal or alkaline earth metal chlorides; a preferred catalyst is a copper chloride-zinc chloride-calcium chloride catalyst.  Suitable carriers are silica, alumina, fuller's earth, kieselguhr, and pumice.  The catalyst particles may be diluted with sand. Examples react ethylene to obtain C2Cl4 and C2HCl3 as the main products, together with CHCl3, C2H2Cl2, C2H3Cl, C2Cl6, C2HCl5, C2H2Cl4 and C2H4Cl2; and CH2Cl.CH2Cl to obtain perchloroethylene, together with C2HCl3 and C2HCl5.  Other specified starting materials are methane, ethane, propane, ethylene, and tetrachloroethane.
Patent GB-464970-A (GB)
Title: Improvements in coupling coil systems for oscillatory electric circuits
IPC: H03H7/01
Filed: 1936-06-18
Abstract: 464,970. Transformers. HAZELTINE CORPORATION. June 18, 1936, No. 16966. Convention date, July 11, 1935. [Class 38 (ii)] In a high-frequency transformer for coupling, for example, intermediate frequency stages in a superheterodyne radio receiver, tuning adjustment is effected by varying the self inductance of the coils in such manner that their mutual inductance is simultaneously varied so as to maintain constant coupling. The two windings 11, 12 are arranged coaxially and divided into sections, the inner sections 34, 35 and 37, 38 being mounted on the same former 18 in fixed relationship. The outer sections 33, 36 are mounted on separate formers 19, 20 which are adjustable by screws 24, 30 so that the self inductance of each winding may be varied by varying the mutual inductance between its component sections. Alternative forms of telescoping formers and adjusting means therefor are described, and dimensional particulars are given in the Specification.
Patent GB-404867-A (GB)
Title: Manufacture of vat-dyestuffs
IPC: C09B5/02
Filed: 1933-06-14
Abstract: Vat-dyes are prepared by alkali fusion of a compound obtainable by condensing an aceanthrenequinone with an aromatic, aliphatic or alicyclic 1.2-diamino compound and which may be represented by the formula:-- <PICT:0404867/IV/1> wherein R stands for the aromatic, aliphatic or alicyclic residue of the 1.2-diamino radicle.  The products, which are of unknown constitution, may be halogenated.  In examples: (1) the condensation product of aceanthrenequinone with 1.2-diaminobenzene is fused with alcoholic potash to give a green vat dye; (2) the condensation product of aceanthrenequinone with 2-chloro-4.5-diaminotoluene (probably a mixture of isomers) is similarly fused to give a green vat dye; (3) the alkali fusion of the condensation product of aceanthrenequinone with ethylenediamine gives a green dye; (4) the alkali fusion of the condensation product of aceanthrenequinone and 1-methyl-3.4-diaminobenzene gives a green dye, and similarly also the condensation products of aceanthrenequinone with 1.2-diaminonaphthalene and with 2.3-diaminofluorenone; (5) the condensation product of methylaceanthrenequinone (obtainable from 2-methylanthracene and oxalyl chloride) and 1.2-diaminobenzene on alkali fusion yields a green dye; (6) the product of (1) above is brominated in nitrobenzene; it dyes green tints.
Patent GB-783015-A (GB)
Title: Improvements in or relating to protection of metal bodies
IPC: C23F11/10
Filed: 1955-06-13
Abstract: A fluent coating composition for protecting metals against corrosion comprises a mixture consisting of 1 to 5 per cent of tall oil by volume, a petroleum residuum from straight run distillation of a naphthene base crude oil, the residuum having a Saybolt-Furol viscosity of 40 to 45 seconds at 210 DEG  F., and sufficient petroleum oil capable of cutting back the residuum to give the mixture a Saybolt-Furol viscosity of 25 to 50 seconds at 122 DEG  F., together with an aliphatic diamine.  The diamine may be of the formula R.NH.CH2.CH2.CH2.NH2, where R is an alkyl group having 8 to 18 carbon atoms, and may represent a mixture of groups derived from tallow fatty acids.  The diamine may be present in an amount of up to 4 per cent by weight, on the basis of the remaining constituents. Small quantities of an isobutylene polymer or of an oxidized wax fraction may be present. The composition may be applied to the inner surface of a metal tank by floating it as a uniform layer, contacting the confining surfaces of the tank at its margins, upon the surface of water contained in the tank, and effecting relative movement between the surface of the water and the walls of the tank, as by pumping additional water into the tank, or by draining it.  Corrosion tests on metal panels coated with the compositions are described.
Patent GB-384580-A (GB)
Title: Feed-lift throw-out mechanism for sewing machines
IPC: D05B27/02
Filed: 1932-06-16
Abstract: 384,580. Sewing-machines. FAIRWEATHER, W. C., 65, Chancery Lane, London.- (Singer Manufacturing Co. ; Elizabeth, New Jersey, U.S.A.), June 16, 1932, No. 17023. [Class 112.] Feed by dogs.-The feed-dogs of a sewing- machine can be lowered to an inoperative position to enable the machine to be used for darning or embroidery, the material being then fed by hand. The usual feed-dog 7 is carried by the bar 6 provided with the rock shaft 3 and rocker arm 31 and a fork for engaging the lift roller 9. This roller is mounted on an arm 10 of a bell-crank lever pivoted on the stud 11 of the feed lift arm 12 clamped to the rock shaft 4. This arm 12 has an aperture 14 in which slides the shank 15 of a thumb screw 16. The threaded end of this screw engages one of two tapped apertures 20 of the other arm 21 of the bell-crank lever 10, these apertures being equidistant from the pivot 11. When the thumb screw is engaged in the upper aperture, the feed-dog is in the operative position, the parts being shown by the full lines of Fig. 1. When engaged in the lower aperture, the parts are in the position shown by the dotted lines of Fig. 1 and the feed - dog is inoperative. A finger-piece 22 facilitates the moving of the bell-crank lever to bring the holes opposite the screw.
Patent GB-706349-A (GB)
Title: Improvements relating to driving and conveying chains
Inventor: SIMPKIN FRANCIS WALTER
IPC: B65G17/38
Filed: 1951-07-18
Abstract: 706,349. Endless-chain conveyers. RENOLD & COVENTRY CHAIN CO., Ltd. July 10, 1952 [July 18, 1951]. No. 17067/51. Class 78 (1) [Also in Group XXV] A chain conveyer comprises groups of three standard links 36, two outer and one inner, alternate with bi-planar links 40 (see Group XXV). A bracket 42 is secured to each bi-planar link 40 by an eye bolt 44 from which loads can be suspended and which passes through the gap in the link and carries clamping plates 46 which are tightened on to the link by a nut 48. The bracket comprises two upwardly extending arms 50 carrying rollers 52 running on an 1- sectioned rail 54 which may be bent to guide movement of the loads in a vertical plane movement in a horizontal plane being guided by chain wheels (see Group XXV) engaging the chain.
Patent GB-312820-A (GB)
Title: A new or improved device for protecting the flames of spirit stoves and the like
IPC: F24C15/28
Filed: 1928-06-13
Abstract: 312,820. Pirret, R. June 13, 1928. Guards.-A device for protecting the flames of spirit lamps or stoves used in the open, of the type comprising a collapsable container formed of hinged sections a, is made of asbestos or like fireproof material, the edges of the sections being preferably strengthened by metal strips f. The sections are connected by hinges d, or they may be detachably connected. A hinged or detachable base and a lid c may be provided. One section may be provided with an observation aperture covered with transparent material such as mica.
Patent GB-727812-A (GB)
Title: Steroids
IPC: C12P33/00
Filed: 1952-07-08
Abstract: The invention comprises 6b ,17a -dihydroxyprogesterone and the production of 6,17a -dihydroxyprogesterone by bringing 17a  - hydroxyprogesterone into contact with enzymes produced by a growing fungus of the genus Rhizopus, e.g. Rhizopus arrhizus or Rhizopus nigricans, under aerobic conditions.  The examples describe the simultaneous production of 11,17-dihydroxyprogesterone which is separated by chromatographic methods.
Patent GB-1109267-A (GB)
Title: Support arrangements for mobile cranes
Inventor: EICHLER HERBERT
IPC: B66C23/78
Filed: 1966-04-19
Abstract: 1,109,267. Vehicle rest bart. SCHWERMASCHINENBAU S. M. KIROW VEB. 19 April, 1966, No. 17177/66. Heading B7J. A device for supporting mobile cranes in a stationary position comprises a box frame 1 attached to the vehicle. A pair of arms 3 are movable within the frame from extended to retracted positions by means of rollers 4, 5, 6. Abutment plates 7, 8 welded to the sides of each arm co-operate with abutment plates 9, 10 welded to the frame in the extended positions of the arms when the weight of the vehicle is taken by pedestals 2 mounted at the ends of the arms.
Patent GB-1082885-A (GB)
Title: Pattern recognition equipment
IPC: G06K9/00
Filed: 1966-04-20
Abstract: 1,082,885. Pattern recognition. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 20, 1966 [April 30, 1965], No. 17228/66. Heading G4R. Characteristics of a pattern are recognised in response to simultaneous outputs from means for recognising gaps of less than a predetermined width between adjacent segments of the pattern and means for recognising segments of width greater than a predetermined value. A fingerprint mounted on a rotating drum is scanned parallel to the drum axis by a scanistor (for which Specification 1,010,583 is referred to) driven by a ramp generator. A differentiator is used to extract the modulations from the modulated ramp produced and feed them via a gate enabled only while the ramp is operative (for noise reduction) to recognition circuitry. In the latter, bifurcation-maybe circuits detect gaps of less than a predetermined width between adjacent pattern ridges and double-width detection circuits detect wide ridges. These circuits feed AND gates which indicate a bifurcation pointing in one direction when a smallwidth gap occurs in one scan near the centre of a wide ridge in the next scan (a one scan delay being used), and a bifurcation pointing in the opposite direction when the order of occurrence is reversed. Similar circuits are provided for recognising line endings, being preceded by inverters since a black line ending is equivalent to a white bifurcation. However, the AND gates are only enabled to produce outputs if the scans are more or less perpendicular to the pattern ridges, as indicated by a ridge density determining circuit. This is to prevent incorrect recognition due to deteriorations of the ridge edges actuating the bifurcation-maybe circuits. The ridge density determining circuit contains delays and requires a minimum ridge density (frequency) to be exceeded for each of four consecutive scans, before producing an output, to prevent incorrect operation due to deteriorations of the edge of a ridge being taken for successive ridges. Islands and short ridges can be similarly detected. Scans at different orientations can be made, e.g. using further scanistors.