baber/WOPTO huggingface dataset:
Patent GB-987875-A (GB)
Title: Arrangement for the separate generation of a carrier oscillation and its sidebands
IPC: G01S1/46
Filed: 1961-09-22
Abstract: 987,875. Amplitude modulation; automatic frequency and phase control systems. STANDARD TELEPHONES & CABLES Ltd. Sept. 22, 1961 [Oct. 17, 1960], No. 34041/61. Headings H3A and H3R. In an arrangement to generate three output signals, the respective frequencies of the three signals being the carrier signal and the two associated sideband signals which when combined produce an amplitude-modulated signal wave, first and second signal sources each include a generator and a frequency multiplier and each generator produces a subharmonic of a different one of the three output signals, the multiplier producing the said one of the three signals. The first and second signal sources are connected to a mixer which produces in response to the first and second signals a difference frequency signal, this difference frequency signal being the third output signal. In the embodiment of Fig. 1 frequencies # 0 +# 1 /2 and # 0 -# 1 /2 are produced in the generators G 1  and G 2 . When these are added in the modulator M a frequency f 0  is produced and when doubled in the doublers V 1  and V 2  frequencies f 1 + f0 and f1 - f0 are produced. In the embodiment of Fig. 4 frequencies # 0 +# 1 /2     and # 0 /2 are produced in the generators G 1  and G 3 . The frequency from the generator G 3  is doubled at the doubler V 3  to produce the frequency f0, from which the frequency from the generator G 1  is subtracted in the modulator M 1  to produce a frequency # 0 -# 1 /2. Doubling   in the doublers V 1  and V 4  produces the required sideband frequencies. The generator G 3  frequency is stabilized in frequency by deriving the frequency f1 from f0 and f0 - f1 in the modulator M 2  and feeding this back to operate a control voltage device which controls the generator. The relative phase of the generators G 1  and G 3  is kept controlled by determining the difference in phase, if any, between f1 as derived from the modulator M 2  and as derived from f0 and f0 + f1 combined in the modulator M 3  and using the signal to produce a correction at Sp in the line from the generator G 1 .
Patent GB-1092858-A (GB)
Title: Water impervious fabric
IPC: D06M15/643
Filed: 1965-08-09
Abstract: A water impervious coated fabric comprising a fabric which has a coating of unfilled silicone rubber on the threads thereof and a continuous film of said rubber across the interstices in the fabric, the coating and the film being thinner than the threads of the fabric whereby said coated fabric has a handle substantially like that of the uncoated fabric.  The fabric of the invention may be prepared by the following steps:-(1) knife coating the fabric with an organic solvent, e.g. xylene solution of unfilled silicone rubber stock at a concentration of about 25% by weight based on the weight of the fabric and (2) curing the rubber, e.g. by radiation or chemical vulcanising agents after evaporation of the solvent.  The threads may be of cotton, wool, flax or silk or of a synthetic fibre such as cellulose acetate, polyamides, polyesters, polyacrylonitrile, co-polymers of vinyl chloride and vinylidene chloride and glass.  The silicone rubber formulation are essentially mixtures of polymeric diorganopolysiloxanes in which the organic substituents on the silicon are hydrocarbyl radicals such as, methyl, ethyl, vinyl, phenyl and halohydrocarbon radicals such as trifluoropropyl, chlorophenyl and fluorovinyl. Small amounts of additives such as those to deactivate the polymerisation catalyst or to improve ultraviolet resistance or to impart colour to the rubber.  Primers may also be employed such as alkyl titanates, alkyl silicates and combinations thereof and silanes such as alkenysilanes such as vinyl-tris-betamethoxy-ethoxysilane and allytrimethoxysilane and acryloxy silanes such as gamma methacryloxypropyltriethoxy silane. The primes may be applied as dilute solutions which are dried and the rubber stock thereafter applied.
Patent GB-860096-A (GB)
Title: Improvements in domestic fire places
IPC: F24B1/19
Filed: 1959-10-08
Abstract: 860,096. Air supply to fireplaces. FIELDS, F.C. Nov. 13, 1959 [Oct. 8, 1959, Oct, 13, 1959], Nos. 34068/59 and 34595/59. Class 126. A device for supplying air to a fireplace from beneath the floor D of the room comprises a box A with sides a, a front b, a sloping top c which merges into the floor and has an angled supporting bracket B secured to its underside and an open base communicating either with an underfloor space S by means of holes d drilled in the floor, or with a duct running through a solid floor, (not shown). A grid b' prevents coal from entering the device. In use, air from the box A is directed on to the hearth and deflected into the chimney to prevent down draughts.
Patent GB-496432-A (GB)
Title: Improvements in and relating to electric control transformers
IPC: H01F29/14
Filed: 1937-12-09
Abstract: 496,432. Converting ; transformers. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 9, 1937, No. 34167. Convention date, Dec. 9, 1936. [Class 38 (ii)] . A transformer for supplying peaked control potentials of adjustable phase to a valve converting arrangement wherein a rapid change of phase over a limited range of current with little change outside the limits of the range is obtained, comprises a plurality of saturable magnetic paths 65, 66, 67, Fig. 1, carrying the primary and secondary windings 68-73 and arranged in parallel with a further saturable magnetic path 61 between a pair of yokes 64 connected externally by a core part 60. Saturating windings 74, 75, 76 arranged respectively on the core part 60 and the yokes 64 are connected in series in the D.C. circuit of the converting arrangement. The windings 75, 76 on the yokes are arranged so as to produce a flux therein which opposes that due to the saturating winding 74. In a modification the core part 60 has arms which are parallel to but separated by air gaps from the yokes 64. Specification 471,587 is referred to. The Specification as open to inspection under Sect. 91 comprises also the modifications shown in Figs. 1 (Cancelled) and 3 (Cancelled) in which the core 12 of the transformer for supplying grid potentials is provided with opposed saturating windings 18, 19, one being energized in accordance with load current and the other in accordance with a voltage (the supply voltage in one arrangement, a standard voltage in the other arrangement). By a suitable adjustment either a constant voltage or a constant current characteristic can be obtained. This subject-matter does not appear in the Specification as accepted.
Patent GB-1412796-A (GB)
Title: Method and apparatus for recording data on light sensitive medium
IPC: G11C13/04
Filed: 1972-07-21
Abstract: 1412796 Holograms KMS INDUSTRIES Inc 21 July 1972 [22 July 1971] 34181/72 Heading G2J A series of one-dimensional holograms is recorded by scanning a split beam across a continuously moving film 36, the scanning being produced by a disc 30 carrying a series of Fresnel zone areas in pairs. Each pair has a unique physical spacing and thus each adjacent line of recorded information has a unique gating frequency. Readout is achieved by shining laser light through the slots b which effectively determine the variation of the gating frequency. Thus even if adjacent lines overlap there is no appreciable cross-talk.
Patent GB-415999-A (GB)
Title: Improvements in and relating to speed regulating devices for electric motors
IPC: H02P25/32
Filed: 1932-12-02
Abstract: 415,999. Motors ; transformers. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) Dec. 2, 1932, No. 34190. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 4, 1933]. [Classes 35 and 38 (ii).] Machines with vapour or like rectifiers in place of commutators.-In a commutatorless motor fed by one or more transformers, some of the transformer windings are directly associated with the grid controlled vessels by which the commutation is effected. A plurality of transformer secondary windings is employed, either on separate cores or on a common core. In the form shown in Fig. 2 the transformer secondary windings 4, 6, 8 have a centre tapping connected to the field winding 31. The stationary armature 32 has six windings of which three conduct current simultaneously ; thus, after the commutation of the current from 25 to 24 has been effected the windings 24, 26 and 28 are effective until the next winding, for example 26, approaches its neutral position and the current is commutated from 26 to 27. In an alternative form, the single anode tubes are replaced by a single multiple anode discharge vessel and there are two secondary windings on each transformer with their ends connected to the anodes and their centre tappings connected to the ends of the windings, the field winding in this case being connected between the cathode and the neutral point of the armature. In the form shown in Fig. 3, the valves are connected in parallel in opposite senses and the current flows continuously in the windings. Thus, when group 13, 14 is made conductive, the current through winding 24 which had been flowing through 11 (or 12) immediately reverses and flows through 14 (or 13), a negative grid potential having been applied to 11, 12. In this arrangement, the rotary field winding 31 is fed with alternating instead of rectified current from the supply directly or through a current transformer 33. Instead of three separate transformers 10, a single five limbed one may be used with the primary and secondary windings on the three central or on the centre and outer limbs, the three primary windings, one per wound limb, being in series.
Patent GB-1192825-A (GB)
Title: Improvements in or relating to 6alpha,7alpha-Methylene and -Halomethylene Steroids
Inventor: BEARD COLIN CHARLES
IPC: C07J53/00
Filed: 1967-07-26
Abstract: 1,192,825. 6α,7α - Methylene- and halomethylene-steroids. SYNTEX CORP. 26 July, 1967, No. 34331/67. Heading C2U. Novel steroids of the formulµ (wherein X is H, Cl or F; R<SP>1</SP> is OH or O acyl; R<SP>2</SP> is H, OH, O acyl or, with R<SP>1</SP>, alkylidenedioxy; R<SP>3</SP> is H, α- or #-CH 3 , or in (II) and (III) together with R<SP>2</SP>, 1-alkoxy-alk-1,1-ylidenedioxy; R<SP>4</SP> is H, Cl or F; R<SP>5</SP> is OH or Cl, R<SP>4</SP> being Cl when R<SP>5</SP> is Cl; R<SP>7</SP> is H or CH 3 ; R<SP>8</SP> is H or phenyl which may be Cl-, F-, CH 3 O- or CH 3 -substituted; and Z is a carbon-carbon single or double bond, being single when R<SP>7</SP> is H) are prepared from the corresponding #<SP>6</SP>- steroids by reaction with dimethylsulphoxonium methylide or with an alkali or alkaline earth metal salt of an acid WCHXCOOH where W is Cl, I or Br and X is Cl or F. The 6α,7α-isomers are separated from the usually formed mixtures with the 6#,7#-compounds by standard procedures. Hydroxy groups which become esterified during the reactions can be regenerated by alkaline hydrolysis; alternatively they may be protected. The products may be subjected to conventional procedures to introduce or interconvert substituents and double bonds. These processes and the preparation of starting materials are described in Specification 1,192,824. The 6α,7α - methylene and -halomethylene steroids of the invention have variously corticoid, anti-inflammatory and progestational activity, and the progestational agents also possess varying degrees of anti-androgenic, anti-estrogenic and anti-gonadotrophic activity; and they may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-1018112-A (GB)
Title: Cams for winding machines
Inventor: BEDOE BRIAN
IPC: B65H54/28
Filed: 1961-09-26
Abstract: 1,018,112. Cams. BRITISH NYLON SPINNERS Ltd. Sept. 14, 1962 [Sept. 26, 1961], No. 34359/61. Heading F2K. A cam for imparting motion to a traverse bar in a textile winding machine comprises two parabolic arcs which are defined mathematically in the Specification. The cam is preferably of the grooved cylinder type.
Patent GB-619021-A (GB)
Title: Improvements in or relating to operating mechanism for the doors of furnaces, coke-ovens and the like
IPC: C10B25/14
Filed: 1946-11-20
Abstract: 619,021. Screwing-up screws &c. WOODALLDUCKHAM (1920), Ltd., and NASH, C. W. Nov. 20, 1946, No. 34394. [Class 83 (iii)] [Also in Group XII] Operating mechanism for the doors 3 of coke-ovens &c. incorporates automatic means for rotating the pressure screws of the latch bars 8, 9 of the doors and movable to and from the doors, such means comprising a rotary element which engages and rotates a pressurescrew and is driven by a pneumatic motor 18 through an impacting device adapted to operate automatically when a certain torque is reached, and means for controlling the air-supply to the motor. The doors 3 are closed by the latchbars 8, 9 engaging with hooks 4 ... 7 (see Group XII). A beam 21, Fig. 1, carries the closing mechanism and is moved towards the doors to engage spigots 30, 31, Fig. 2, with a bar 15 carried on a pressure-screw 10, the spigots being formed on a cup-shaped member 29 slidably mounted against a spring on a square shaft 27 which is driven by the pneumatic motor 18 incorporating a centrifugal impacting device removably mounted on the beam; the impacting device is adapted to provide a series of hammer-like blows when the pressure-screw approaches its fully-tightened position and at the start of the unscrewing operation. Instead of the resilient mounting for the member 29, the air-motor assembly, including the members 27 and 29, may be resiliently mounted for axial movement on its supports, or a universal joint may be used to allow for misalignment and a square-recessed socket may engage directly with the co-operating end of a pressure-screw. A compressor 45 and reservoir 46 supply air to each motor 18 under the control of levers 49 by which the rotation of each motor is reversed by actuation of an air-operated piston which moves the reversing lever on the motor. The compressor 45 and reservoir 46 may be mounted so as to travel with the operating mechanism, or the air pressure may be taken from a static air-line similar to that disclosed in Specification 606,586, [Group XII]. An automatic cut-off device is provided for shutting off the air supply when the screws have been adequately screwed up or unscrewed. Specifications 463,486, [Group XII], and 496,755 also are referred to. The Provisional Specification describes, in addition, arrangements in which the impacting device is omitted, the air motor is mounted for swivelling and the mounting bracket for the motor is integral with the ram.
Patent GB-930990-A (GB)
Title: Lignin resins and preparations thereof
IPC: C08L63/00
Filed: 1959-10-13
Abstract: Lignin is intimately admixed with polyepoxides.  The lignin must be in such a form that it has a solubility of at least 5% by weight in the polyepoxide.  Suitable lignins are:-alkali lignin in the free or acid form, wood hydrolysis lignin (e.g. Rheinau), demethylated lignin, and various esters and ethers of lignin, e.g. lignin treated with benzyl chloride or diethyl sulphate. Polyepoxides specified are glycidyl ethers of glycerol, (di)ethylene glycol, resorcinol, 1,3,5-hydroxy benzene, 1,5-dihydroxy naphthalene, 2,2,5,5-tetrakis-(4-hydroxy phenyl) hexane, and bis-phenol A; and dicyclopentadiene dioxide.  Various modifying agents are also added to either or both in varying quantities and in various orders:- (i) phthalic, hexahydrophthalic, dodecenyl succinic, methyl nadic, tetrachlorophthalic, pyromellitic and maleic acids or anhydrides; (ii) amines, e.g. N,N-dimethyl benzylamine, m-phenylene diamine, hydroxy ethylated diethylene triamine, (iii) aliphatic monocarboxylic acids, e.g. oleic, linoleic, linolenic, palmitic, stearic and tall oil; (iv) solvents, e.g. acetone, xylene, mono ethyl ether of ethylene glycol and allyl glycidyl ether; (v) fillers, e.g. clays, sand, wood flour, resin scrap, asbestos, TiO2, and wood, cotton or glass fibres; (vi) Co or Ca naphthenates, phosphoric acid, epoxidized oils, and urea-formaldehyde, polyamide or polysulphide resins.  Uses: The main uses are as moulding powders, adhesives, coating compositions and laminates (see Group VIII).ALSO:Lignin is reacted with a polycarboxylic curing agent for polyepoxides to provide a reaction product containing residual carboxyl groups, and the reaction product is then reacted with the polyepoxide (see Group IV(a)).  In Example 32 phthalic anhydride is reacted with oven-dry free alkali lignin for 1 hour at 140 DEG C.ALSO:In Example 21 a wood board is made from aspen wood flakes sprayed with an acetone solution of an epoxy resin and lignin. The acetone is evaporated and the wood flakes are pressed at 200 p.s.i. and 350 DEG F. for 15 minutes to form a solid board 0,5 inches thick.
Patent GB-209587-A (GB)
Title: Levelling apparatus for locomotive jacks
IPC: B66F7/02
Filed: 1922-12-20
Abstract: 209,587. Golby, F. W., (Whiting Corporation). Dec. 20, 1922. Differential switches; gravity switches; mercury switches; electric-motor actuation; flexible-pull actuation.-In jacks for raising locomotives &c. of the kind comprising a cross-bar each end of which is raised by electrically-actuated mechanism, automatic control mechanism is provided for the. motors which ensures that the crossbar remains parallel to its original position. The bar 22 is raised by screws 16, 18, Fig. 2, actuated by motors 12, 14 through gearing 20. A rope 28 anchored at 30 passes over pulleys 24, 26 on the bar 22, over pulleys 34 on the casing 46 and is connected to a weighted rod 36 movable in guides 38. A block 42 adjustably mounted on the rod 36 when displaced from the position shown by tilting of the bar 22 moves one of the arms 54, 56 and opens the corresponding switch 50, 52 thereby actuating electric control mechanism for the motors 12, 14. In a modification, switches 68, 70, Fig. 4, are actuated by a pendulum 72 suspended from the cross-bar. In another modification a tube 58, Fig. 3, partly filled with mercury is mounted on the cross-bar and is entered at opposite ends by wire terminals 62, 64 of such length that when the bar tilts one of the contacts is broken.
Patent GB-790222-A (GB)
Title: Improvements in or relating to tiled floors
Inventor: QUILIGOTTI EDWARD EMANUEL
IPC: E04F15/08
Filed: 1954-12-01
Abstract: 790,222. Tiled floors. QUILIGOTTI & CO., Ltd., A. Sept. 6, 1955 [Dec. 1, 1954], No. 34748/54. Class 107 A crack-absorbing zone is provided under tiles by having a plurality of spaced rigid supporting columns surrounded by air spaces as an intermediate layer between the tiles and the base. Rhomboids d of baked clay spaced by a wire mesh are laid on the base f and a semi-stiff mass c of concrete is laid over and worked so that the concrete flows between the rhomboids but leaves air spaces g around their bases. The tiles a are then laid on this concrete layer.
Patent GB-1256351-A (GB)
Title: System for controlling a rotating a.c. electrical machine
IPC: H02P1/46
Filed: 1967-12-15
Abstract: 1,256,351. Control of A.C. motors. BRUCE PEEBLES INDUSTRIES Ltd. 13 Dec., 1968 [15 Dec., 1967; 22 July, 1968], Nos. 57127/67 and 34772/68. Heading H2J. Incoming pulse signals derived from the stator and rotor of a machine, e.g. a motor, are applied to the SET and RESET inputs of a bi-stable circuit FF1, to produce at its output a signal which is a function of the phase difference between the two sets of pulses. The signal is in the form of width modulated pulses which are integrated to give a sawtooth signal which is fed to a voltage level discriminator VLD1 to produce a square wave output at the difference frequency. This signal is then applied to bistable FF2, the outputs of which are applied to timers T1, T2. If the difference frequency is lower than a predetermined limit, set by the timers, first T1 and then T2 conclude their timing periods to set M1 and M2. The next transition of the output from VLD then feeds a pulse through AND gate 12 to control the motor. One application is the starting of a synchronous motor by ensuring that excitation is applied only when the motor has accelerated so that its slip is small. A second motor 2 may be synchronized with the first, a logic circuit 13 similar to that of block 11 being fed with signals from both motors.
Patent GB-793075-A (GB)
Title: Fishing float
IPC: A01K93/00
Filed: 1955-12-06
Abstract: 793,075. Fishing net floats. THORNHILL, J. R. Dec. 6, 1955 [Dec. 13, 1954], No. 34905/55. Class 48. A plastic fishing float assembly comprises a pair of moulded cups 7 of similar size and shape each having a cylindrical side wall and an apertured end wall 9, an integral central tube 11 having its bore merging into the aperture 12 in the end wall and extending to the mouth of the cup, a separate circular reinforcing member 15 including a circumferential rim 16 engageable in the mouths of the cups and means on the central portion of the member 15 providing an interfitting connection with the tubes 11 when the cups are assembled in mouth-to-mouth relation with the member 15 fitted therein, the assembly being permanently secured by cement. The cylindrical side wall of each cup tapers slightly toward the end wall 9. The member 15 is a centrally apertured disc having flanges at its outer edge to fit snugly in the mouths of the cups and having annular flanges 17 at its inner edge to fit snugly over the ends of the tubes 11. The float is reinforced by radial webs 18 extending between the tubes 11 and the cups.
Patent GB-312290-A (GB)
Title: Improvements in mechanical servo apparatus for brakes
IPC: F16D51/00
Filed: 1927-12-24
Abstract: 312,290. Crockett, R. A. Dec. 24, 1927. Blocks acting on drums. - In a mechanical servo brake three shoes 5, 6, 7 are pressed radially into contact with a drum 1 by cams 8, 9, 10 and plungers 21, the operating arm 11 of which can be clutched at will to the shoe 5 capable of peripheral movement so that it can move the arm 11 and cams further and increase the braking action. The clutch comprises a clutch-pad 18, Fig. 3, passing through a slot in the shoe 5 and extending within a bush 17 on the end of the arm 11. Springs force the members 17, 18 apart and a connection 20 to the brake pedal is adapted to force them together to grip the shoe 5. An electromagnetic clutch may be used. The shoes also abut against one another and thus increase the braking pressure. In order that the clutch operates in one direction only the clutch parts 23, 24 are formed as shown in Fig. 4, so that when the shoe 25 moves in the direction shown by the arrow A the clutch parts, owing to a stop between them, will not grip the thin part of the shoe.
Patent GB-383089-A (GB)
Title: Improvements in power transmission mechanism associated with multi-cylinder internal-combustion engines
IPC: F02B67/04
Filed: 1931-12-17
Abstract: 383,089. Driving gear. BRISTOL AEROPLANE CO., Ltd., FEDDEN, A. H. R., and BUTLER, L. F. G., Filton House, Bristol. Dec. 17, 1931, No. 35017. [Class 7 (ii).] In engines having the cylinders arranged in one or more rows, the drive to a propeller shaft 10 is through two or more valve-actuating shafts 15, 16 ; the speed-reducing gearing 20, 21, 22 between the propeller shaft and the shafts 15, 16 is adjacent the drive 17, 18, 19 for the latter shafts from the crank shaft 12. A blower 13 is driven off the further ends of the shafts 15, 16. A spring drive may be incorporated in the transmission to the propeller and to the blower. The cylinders may be inclined or their axes may form an X with the shafts 15, 16 arranged between pairs of cylinders.