baber/WOPTO huggingface dataset:
Patent GB-542513-A (GB)
Title: Improvements in synthetic resinous compositions
IPC: C08K5/20
Filed: 1940-07-30
Abstract: 542,513. Urea-aldehyde condensation products. BRITISH THOMSON-HOUSTON CO., Ltd. July 30, 1940, No. 12332. Convention date, Aug. 2, 1939. [Class 2 (iii)] Urea aldehyde condensation products have incorporated therewith as curing accelerator a halogenated amide of a secondary amine said amide having at least one halogen attached to an alpha and/or beta carbon atom. The amides containing the amide grouping. where R, R<SP>1</SP> are the same or different organic groupings capable of attachment to a N atom, e.g. alkyl, aryl, aralkyl, alkaryl, acyl, naphthyl, hydrocyclic or heterocyclic radicles. A coniprehensive list of such halogenated amides is given in the Specification. Specified ureas are urea, thiourea, acetyl-, benzoyl- ; phenyl-, assymetrical di-ethyl-, allyl-, 2-chloro-allyl-, ethylidine-, methylol-, and methyleneureas ; guanidine, dicyandiamide, guanyl urea, guanyl thiourea, biguanidine, aminoguanidine, aminotriazole, creatine, creatinine, guanoline, ethylene pseudo-sulphocarbamide derivatives, sulphohydantoin, and triazine derivatives. Aldehydes specified comprise paraformaldehyde, hexamethylene-tetramine, acetaldehyde, butyraldehyde, propionaldehyde, acrolein, methacrolein, crotonaldehyde, or mixtures thereof. Modifiers may be added, e.g. mono and polyhydric alcohols, phenols, ketones, amides and amines ; lignin; hydrolized wood products, proteins ; aldehyde condensation products with phenols, proteins, aniline, sulphonamide ; polyvinyl compounds ; natural gums or resins ; water-soluble cellulose derivatives. Dyes, pigments, plasticizers, mould lubricants, opacifiers, and fillers may be added. The products may be used as moulding compositions, protective surfacing materials, for making arc extinguishing tubes, laminated articles and anti-creasing agents. In examples (1) 60 parts urea, 15 parts aqueous ammonia, 160 parts aqueous formaldehyde, 0.04 parts sodium hydroxide are refluxed together for one half-hour and 1.18 parts of diethyl chloroacetamide are added to the syrup obtained, 20 parts of the syrup mixed with 6 parts alpha flock and 0.04 part zinc stearate were mixed and dried at 50‹ C. to give a moulding composition which was cured at 120-150‹ C. under a pressure of 1,000-4,000 lb.
Patent GB-587168-A (GB)
Title: Improved process for the production of aromatic amines
IPC: B01J27/047
Filed: 1944-06-28
Abstract: Aromatic amines are produced by hydrogenation of nitro compounds, using a catalyst consisting of 1-20 per cent. of molybdenum sulphide or tungsten sulphide supported on active charcoal.  The catalyst may be prepared (1) by impregnating charcoal with ammonium molybdate and treating with hydrogen sulphide or (2) by impregnating with ammonium sulphide solution containing dissolved molybdenum oxide, and heating. The hydrogenation of nitroxylenes to xylidines may be effected at 375-500 DEG F. and 600-3,000 lbs. per square inch pressure, using a mixture of water and hydrogen.ALSO:Aromatic amines are produced by hydrogenation of nitro compounds, using a catalyst consisting of 1-20 per cent of molybdenum sulphide or tungsten sulphide supported on active charcoal.  The catalyst may be prepared (1) by impregnating charcoal with ammonium molybdate and treating with hydrogen sulphide solution containing dissolved molybdenum oxide, and heating.  The hydrogenation of nitroxylenes to xylidines may be effected at 375-500 DEG  F. and 600-3000 lbs. per sq. in. pressure, using a mixture of water and hydrogen.
Patent GB-1517847-A (GB)
Title: Thyratrons
IPC: H01J17/58
Filed: 1976-03-27
Abstract: 1517847 Gas - filled thermionic valves ENGLISH ELECTRIC VALVE CO Ltd 31 Jan 1977 [27 March 1976] 12415/76 Heading H1D A double-ended thyratron includes at least three grids at each end. At each end, the grid furthest from the cathode is preferably connected, either within or outside the tube, to its corresponding cathode; the grid nearest the cathode is connected to a source of current bias; and an intermediate grid is connected to a source of trigger signals, the trigger signals to the two ends being either simultaneous or independent. The complete tubes may be symmetrical, and may include more than one voltage withstanding gap.
Patent GB-216520-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M15/02
Filed: 1924-05-21
Abstract: 216,520. Dyer, C. M. May 21, 1923, [Convention date]. Spray carburettors. - The Venturi tube 30, Fig. 1, is surrounded bv an exhaust chamber 29 and carries a main fuel nozzle 43 fed from a well 31 which projects into the exhaust chamber 29 and communicates with the float chamber 6. The Venturi tube, which is provided at the lower end with air inlets 51 controlled by a manuallyactuated valve 53, carries a concentrically arranged choke tube 55 into which the nozzle 43 projects. The choke tube 55 is interchangeable, being secured in positon by studs which engage keyhole slots in the base 56, and is provided with air inlets 63 and with a tapped hole 64 to which may be attached a pipe supplying air from the crank case, heated or moistened air, or steam. The nozzle 43 is controlled by a needle val -e 44, and is formed of metal having a high coefficient of expansion so that the fuel supply is diminished as the temperature rises. The slow-running nozzle 37 is controlled by a needle valve 38 and is supplied with fuel by a pipe 33 of high heat conductivity dipping into the well 31. Extra air may be supplied above the Venturi tube from an annular chamber 70 through holes in a liner 63. Fuel enters the float chamber 6 through a gauze filter 17, and nipple 16 controlled by a needle valve 12 adjustably mounted in a flanged collar 11 engaged by the float lever 8. The valve 12 mav be lifted for priming by a knob 14. The float chamber 6 is provided with a drainage plug 23. The exhaust chamber 29 is constructed in two sections 27, 28 to facilitate detachment. According to the Specification as open to inspection under Sect. 91 (3) (a), the air supply to the chamber 70 is controlled by a manually - operated piston valve controlling apertures, one of which consists of a tapering slot, in a cylindrical casing opening into the chamber 70, and the supply of exhaust gases to the chamber 29 is controlled by a screw-down plunger valve in the admission pipe. In the modification shown in Fig. 6, (Cancelled), fuel is supplied by a pipe 87 to a small Venturi passage 98 open to the atmosphere at its open end, and communicating by a passage 99, which passes through the exhaust chamber 29, with an annular passage 91 surrounding a perforated liner 88 mounted in the Venturi tube 30. Fuel is supplied to the slow-running nozzle by a branch pipe 33 leading from the bottom of the pipe 87 and passing through the exhaust chamber 29. Hot, cold, or moist air or steam is supplied through a pipe 93 provided with a perforated outlet 94. This subject-matter does not appear in the Specification as accepted.
Patent GB-1079382-A (GB)
Title: Heat sink structure and method of making the same
IPC: H01L23/367
Filed: 1965-03-24
Abstract: 1,079,382. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. March 24, 1965 [April 3, 1964], No. 12486/65. Heading H1K. An electrical component (as shown, a siliconcontrolled rectifier 10 contained in a hermetic enclosure 12 as described in Specification 1,009,926) is mounted on a block 34 forming part of a heat sink which further comprises a plurality of fins 42, there being an interference fit between the block 34 and the fins 42. Between each pair of adjacent fins are a looserfitting tin-plated brass spacer 44 and a solder ring 46. The fins 42 and a thicker top-plate 40 to be used for mounting the structure are preferably of tin-plated copper, the central block 34 of copper, aluminium, or an alloy thereof. The top plate 40 is a press fit against a knurled edge on the block 34, whereas each fin 42 is initially provided with a central aperture slightly smaller in diameter than the block 34 and is then upset round the periphery of this aperture, placed in position over the block 34, and flattened so that the edge of the aperture is forced into an interference fit with the block (Fig. 4, not shown).
Patent GB-1054352-A (GB)
IPC: C08K3/22
Filed: 1965-03-24
Abstract: 1,054,352. Organo polysiloxane compositions. DOW CORNING CORPORATION. March 24, 1965 [April 2, 1964], No. 12539/65. Heading C3T. A thermosetting resin composition comprises an intimate mixture of (a) an uncured organophenylsiloxane resin having a phenyl to silicon ratio of 0À3: 1 to 0À9: 1, a monovalent or halogenated monovalent hydrocarbon group to Si ratio of 0À4:1 1 to 1À2:1 1 and a total substituent to Si ratio of 1: 1 to 1À7:1 1 and containing at least 0À25% by weight of Si-bonded OH groups and (b) a catalytic amount (e.g. 0À5 to 8À0% by weight of (a)) of a composition containing 45- 70 mol. per cent of a hydroxylated compound selected from aliphatic and cycloaliphatic alcohols, hydroxylated aromatic compounds and aliphatic and cycloaliphatic polyols and aromatic polyols in which at least two carbinol groups are separated by at least one carbon atom, the hydroxylated compound must be in a non-solid phase at the thermosetting temperature, and from 30 to 55 mol. per cent PbCo 3  and/or one or more oxides of Pb. Examples of compositions (b) are mixtures of PbCo 3  and resorcinol, PbCo 3  and octadecanol, PbCo 3  and propylene glycol, and PbCo 3  and hydroquinone. Fillers may also be present in the composition, e.g. glass, diatomaceous earth, crushed quartz, clays, ferric silica, precipitated, zirconium silicate, magnesium silicate and aluminium silicate.
Patent GB-643441-A (GB)
Title: Improvements in the speed control of electric motors
IPC: H02P7/26
Filed: 1945-06-02
Abstract: 643,441. Automatic control systems for electric motors. MITCHELL, J. H., and BURT, E. G. C. June 2, 1945, No. 12568. [Class 38 (iv)] In a D.C. motor speed control device a highfrequency voltage, generated by a phonic wheel driven by the motor, is applied to a thermionic circuit in which comparison is made between a standard D.C. voltage and one proportional to the motor speed, two relays being energized correspondingly to regulate resistances in both the field and armature of the machine. In the embodiment shown, the phonic wheel 1 is driven by the D.C. motor 3 and is associated with a polarized pick-up 4, 5, 6 from which an output voltage of frequency proportional to the motor speed is taken, through a coaxial lead, to amplifier 7. The sinusoidal output of 7 is passed to a squaring and differentiating circuit 8 producing a train of positive and negative pulses of which the former are eliminated by discriminating circuit 9. The negative pulse series is fed to a " single kick trigger oscillator '' 10, the output of which consists of a series of rectangular waves, the heights and widths of which are constant while the recurrence frequency is determined by the frequency of the output of the pick-up 4, 5, 6. The output of 10 thus has an average value varying directly as the frequency of the pick-up and is applied to the smoothing circuit L2, C10, R25, the D.C. output of which is proportional to the speed of motor 3 and which is applied to the discriminating and D.C./A.C. converting circuit 11, as described in Specification 594,612. The output of the latter has a frequency of 50 c/s., an amplitude proportional to speed deviation of motor 3, a phase-sense dependent on the sense of the speed deviation, is amplified, at 12, and then applied to the phase discriminator 13 which yields a D.C. output at 00 only when the motor speed is above datum. Relays 15, 19 which are energized from 00 through valve V8, control the speed of the motor 3 by the - armature and field resistors 24, 25. For large motors the control may be applied to the motor and generator fields of a Ward-Leonard control unit while for a Schrage motor the brushes may be automatically positioned. In the case of prime movers, the fuel or working fluid valve is controlled. Specification 594,612, [Group XXXVIII], is referred to in the Provisional Specification.
Patent GB-759874-A (GB)
Title: Electric dry batteries
Inventor: LEWIS RICHARD WALTER
IPC: H01M2/02
Filed: 1954-04-30
Abstract: 759,874. Batteries. BURNDEPT, Ltd. April 22, 1955 [April 30, 1954], No. 12617/54. Class 53. A dry primary cell has a cathode 1 of carbon or iron surrounded by a mix 2 of mercuric oxide and carbon which is wrapped in a bibulous paper 3 impregnated by a caustic potash electrolyte. The anode consists of a zinccoated bibulous paper 4 surrounded by a zinc member 11 which is in turn enclosed by a magnesium can 5 having its internal surface coated with zinc, preferably zinc amalgam. The can 5 has a sheath 9 of polyvinyl chloride. Specifications 623,888 and 662,774 are referred to in the Provisional Specification.
Patent GB-751155-A (GB)
Title: Improvements in or relating to phase compensating elements
IPC: H01P9/00
Filed: 1954-04-30
Abstract: 751,155. Phase-compensating waveguide circuits. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE]. April 30, 1954 [April 30, 1953], No. 12692/54. Class 40 (8). A microwave phase-compensating arrangement comprises an input guide, an output guide and two shunt guides the lengths and terminating reactances of which are chosen in accordance with a desired phase-frequency characteristic of the output wave. The arrangement may be in the form of a magic-T waveguide junction, Fig. 2, in which a wave propagated in the input guide 1 divides equally between the shunt guides 3, 4, the output guide 2 being nominally decoupled. The shunt arms differ in length by A/4 and are terminated by parallel-resonant circuits in the form of resonant cavities 7 coupled to the guides by inductive or capacitative irises 8. The irises may be adjustable and the cavities may be tuned by means of plungers 9. The waves reflected in the shunt arms combine in phase at the junction and are propagated in the output arm 2. By terminating the shunt arms capacitatively or. inductively the phase response of the arrangement may be adjusted to suit various requirements. If one of the shunt arms is terminated by a parallel-resonant circuit and the other by a series resonant circuit, the electrical lengths of the two arms must be arranged to be equal. The modification of Fig. 3 comprises a multi-aperture 3db directional coupler having input arm 1, output arm 2 and shunt arms 3, 4 terminated by resonant cavities 6. Owing to the 90-degree phase-shifting properties of the coupling it is necessary to make shunt arms 3, 4 of identical electrical length in order that an output wave may be propagated in the arm 2.
Patent GB-474906-A (GB)
Title: Improvements in and relating to wireless and like receivers
IPC: H04B1/26
Filed: 1936-05-05
Abstract: 474,906. Wireless receiving circuits. ATKINSON, N. May 5, 1936, No. 12734. [Class 40 (v)] In order to compensate for frequency drift of the tuning of a wireless receiver due, e.g. to temperature rise during operation, the magnitude of a tuning indication derived from the receiver is a maximum at or near one limit of the pass-band, normal frequency drift tending to take place away from that limit towards the other limit of the pass-band. The Figure shows a superheterodyne receiver in which the input coupling 4, 5 to the I.F. amplifier 6 is designed to pass the normal band, e.g. 10 k.c., the output coupling 7 being resonated to a frequency at that limit of the band remote from that towards which the frequency tends to drift. Thus, in effect the receiver is initially detuned by the amount which the frequency usually drifts. When the receiver has no A.V.C. system the indication may be aural; with A.V.C. a tuning indicator may be operated by the control voltage derived from the detector 8. Where the A.V.C. voltage is derived from the amplifier stage 6, a circuit such as 7 must be provided in the tuning indicator feed circuit. Specification 430,787 is referred to.
Patent GB-1481282-A (GB)
Title: Stabilized vinyl halide resin compositions
IPC: C08L33/02
Filed: 1975-03-26
Abstract: 1481282 Stabilizers for vinyl halide polymers TENNECO CHEMICALS Inc 26 March 1975 [10 April 1974 (2)] 12752/75 Heading C3P A stabilizer composition comprises a mixture of an organic phosphite, a strontium salt and a zinc salt, the salts being salts of alkyl phenols or monocarboxylic acids together with a solvent, solubilizer or other additive. The stabilizer may also contain stannous salts and cerium salts. The preferred components are diphenyl decyl phosphite, strontium nonyl phenate, zinc benzoate, stannous octoate and cerium naphthenate.
Patent GB-110534-A (GB)
Title: Improvements in Means to Prevent Forward Tilting of Flying Machines when on the Ground.
Inventor: CONNOR THOMAS JOSEPH
IPC: B64C25/44
Filed: 1917-09-05
Abstract: 110,534. Connor, T. J. Sept. 5, 1917. Skids.-A device intended to prevent forward tilting of flying-machines when on the ground comprises a member a pivotally mounted on the axle of a land wheel and formed with an extension c, which is connected by a cable d to the member e for applying the band brake described in Specification 109,991, so that when the band brake is applied, the member a is lowered into contact with the ground. The extension c is connected also by a cable f to the tail end of the fuselage with the intention of communicating a downward pull thereto when the member a touches the ground. In a modification, the member a is pivoted to a landing skid.
Patent GB-369452-A (GB)
Title: Improvements in the manufacture of bricks
IPC: B28B3/02
Filed: 1931-04-30
Abstract: 369,452. Moulding bricks in stationary-mould machines. DOLL•, R. and DOLL•, V., 157, Rue de Paris, St. Quentin, Aisne, France. April 30, 1931, No. 12776. Convention date, May 5, 1930. [Class 87 (ii).] A brick mould 1 is closed by a cover 3 having a retaining-latch 6 and the pressure is applied by a plunger 2 which is raised by a pivoted rod 9 actuated through links 17, 18 by pins 15, 16 on an oscillating member comprising coaxial discs 12 which are spaced by the pins. The links 17, 18 form a compound and deformable connecting-rod the ends of which are hooked over the pin 15 and a pin on the rod 9. The links are pivoted together at 19 whilst the pins 15, 16 are disposed on the discs at an angle of 135‹ to one another. In operation, the discs 12 are turned anticlockwise and the links 17, 18 act as a rigid rod to elevate the plunger 2. When the pin 15 passes the dead centre, the rod 9 and plunger are lowered slightly and the cover 3 is removed, either by hand or automatically. The pin 16 then engages with the link 17 and deforms the linkage 17, 18 as shown in Fig, 4, the length of the link 17 being such that a rapid upward discharging motion of the plunger is produced. The discs 12 are then moved clockwise to restore the various parts to their initial positions.
Patent GB-967724-A (GB)
Title: Improvements in or relating to a metering system
Inventor: PHILLIPS RICHARD MORRISON
IPC: G05D11/13
Filed: 1960-04-11
Abstract: The description is substantially the same as that in Specification 967,725, which is referred to, except that the additional circuit for maintaining the preset blend of the two fluids is omitted. Specifications 909,684, 909,685 and 967,726 also are referred to.
Patent GB-977652-A (GB)
Title: Suspension bridge
IPC: E01D19/14
Filed: 1961-04-10
Abstract: 977,652. Suspension bridges. BAUDINCHATEAUNEUF. April 10, 1961 [April 26, 1960], No. 12864/61. Heading E1G. A suspension bridge comprises a span curved in plan view supported by cables 11 and 12 extending between points of suspension 10, 17 and 14, 15 located inwardly of the curve of the girders 8 and 9 respectively which they support. Each cable is directly secured to its girder at its centre and by slings 16 elsewhere along its length. A tie beam 21 extending between the ends of the girder 9 is secured to the cable 12 by slings 22. Transverse and diagonal bracing elements 18 and 19 respectively connect the girders 8 and 9. In an alternative embodiment (not shown), the slings 16 which lie in a vertical plane perpendicular to the longitudinal axis of the girder 8 or 9 are replaced by slings lying in a plane inclined to that axis and the carrier cables 11 and 12 need not be secured to the centres of their respective girders.
Patent GB-1185681-A (GB)
Title: Improvements in or relating to Selective Printing Units
IPC: G06C11/06
Filed: 1967-03-20
Abstract: 1,185,681. Selective printing. ANKERWERKE A.G. 20 March, 1967 [28 July, 1966], No.12871/67. Heading B6F. Type-wheel machines; type-wheel construction.-A printing unit for an accounting machine and designed to produce a magnetically readable print includes a plurality of type carriers 2, Fig. 1, mounted pivotally on printing levers 5, which are pivoted clockwise against the bias of springs 10 under the control of cams 8 and cam followers 7 to impact the type carriers against the platen 11, each of the type carriers having a pair of spaced plates 2a, 2b, Fig. 4, whose outer surfaces are smooth to form guiding surfaces for the adjacent type carriers 2 so that the carriers are guided radially parallel towards the impact position on the platen 11. The spaced plates 2a, 2b have riveted thereto an arcuate type character segment 2c, which in conjunction with a stud 2g mounted pivotally in a recess of lug 5a at the distal end of printing lever 5 also forms a spacer for the plates. The lug 5a has a circular outer periphery serving as a guide for a roller 2h which is mounted rotatably between the plates 2a, 2b so as to retain the type carriers on the printing levers. The type carriers 2 are assembled into a type bank which is contained between guide plates 12 and 13 (Fig. 2) the former being fixed and the latter slidably mounted on guide rods 14, 15. The guide plate 13 is biased into contact with the type bank by a domed nut 17 and locked by a nut 19 coacting with a bolt 18 fast with the machine frame wall 1b. The recess in the lug 5a permits ready interchange of type carriers bearing different founts. Multiple type surface selection.-The type carriers 2 are provided with lugs 2e, Fig. 4, which extend from the plates 2a and carry a pin 2f on which are journalled the drive bars 3 articulated to type character selecting rods 4, all of which are first displaced upwardly to a position 4<SP>1</SP>, Fig. 1, corresponding to the zero character and selected rods 4 are subsequently displaced to positions e.g. II, VII corresponding to numerals 2, 7 respectively, whereupon the type carriers are pivoted by their drive bars 3 to positions 2<SP>1</SP>, II<SP>1</SP> and VII<SP>1</SP> and then to positions 2<SP>11</SP>, II<SP>11</SP> and VII<SP>11</SP> at which impression takes place.
Patent GB-494024-A (GB)
Title: Improvements relating to tone correction in low frequency thermionic amplifiers
IPC: H03G9/08
Filed: 1937-05-06
Abstract: 494,024. Valve amplifying circuits. COLE, Ltd., E. K., and FALKUS, A. E. May 6, 1937, No. 12911. [Class 40 (v)] In an audio-frequency amplifier in which tone correction is obtained by negative feed back, it is arranged that the ratio of feed back energy to signal strength is greatest at low volumecontrol settings so that the low and /or high frequencies are further accentuated relative to the middle frequencies at low volume. Leads 11, 14 feed back energy from the output of valve V2 to the grid circuit of valve V1, and condenser-resistance combinations 12, 13 ; 6, 7, are so arranged that the feed back voltage is diminished at low and high frequencies to produce the required tone compensation. The resistance 6 across which the feed back voltage appears has connected in series across it the volume control 5, diode load 3 and blocking condenser 4 and the bias resistance and condenser combination 15, 16. The resistances 3 and 5 represent the majority of the impedance in the loop circuit and the proportion of the voltage across resistance 6 which appears at the grid of V1 diminishes as the slider of the potentiometer 5 is moved from the minimum end. Switching means may be provided to disable at will the feed back circuit which may also be modified to produce only bass boost or top boost.