baber/WOPTO huggingface dataset:
Patent GB-1073350-A (GB)
Title: Circuit arrangement for controlling the gain of circuits with non-linear ferroelectric dielectric elements
IPC: H04R23/00
Filed: 1964-10-28
Abstract: 1,073,350. Controlled non-linear capacitors; transducer circuits; gain control. CESKOSLOVENSKA AKADEMIE VED. Oct. 28, 1964 [Oct. 31, 1963 (2); March 25, 1964], No. 43953/64. Headings H3B, H4J and H4R. The gain of a non-linear ferro-electric capaci. tor operating near the Curie point is controlled in accordance with the amplitude of a control signal which controls the A.C. heating source or a bias source for the capacitor. In one arrangement the control voltage is applied to an oscillator supplying the heating current, to vary its output amplitude or frequency, and may also be supplied through resistors or inductors to the capacitor as a variable D.C. bias. In a modification the control signal of either polarity is derived through a rectifier from the capacitor output. Where a highpowered heating current source is necessary it may be divided into an uncontrolled portion and a controlled portion. In a sound pick-up (Fig. 5, not shown) the capacitor (10) carries a pick-up needle on one electrode and is connected with a capacitor (102) and an inductor (101) so as to form a parallel resonant circuit. The output from this circuit is rectified and supplied across a parallel combination of a potentiometer (123) and a capacitor (124) to an output terminal (12). The voltage at the sliding contact of potentiometer (123) is fed back across a capacitor (142) to a plate of ferroelectric capacitor (10), by way of an element (141) which forms with capacitor (142) a lowpass filter. Heating current is supplied to the ferroelectric capacitor by way of a variable, capacitor (33).
Patent GB-1242478-A (GB)
Title: Air cleaner assembly
IPC: F02M35/024
Filed: 1969-09-05
Abstract: 1,242,478. Air filter. FORD MOTOR CO. Ltd. 5 Sept., 1969 [25 Oct., 1968], No. 43982/ 69. Heading BIT. An air filter mounted on a carburettor 24 with an intake 26 comprises a cover with a peripheral portion 36 to which is bonded resilient flexible polymeric member 50 which is capable of deforming inward when contacting, e.g. the bonnet of a car but returning substantially to its original shape when the deforming force is removed.
Patent GB-1399587-A (GB)
Title: Laminates
IPC: D21H21/56
Filed: 1973-09-19
Abstract: 1399587 Laminates IDEMITSU KOSAN CO Ltd and NIPPON HIGH PACK CO Ltd 19 Sept 1973 [19 Sept 1972] 43982/73 Heading B5N [Also in Division C3] A laminate comprises a layer of a composition comprising foamed ethylene-polymer resinous material, e.g. polyethylene, ethylene-vinyl acetate copolymers and blends thereof, and at least 30% of the total weight of the composition, of an inorganic calcium-containing compound, e.g. calcium sulphate, sulphite, carbonate, silicate or hydroxide, and resin-impregnated paper bonded to at least one surface thereof. The calcium compound may be present in the form of a powder of particle size less than 10Á. The foamed ethylene polymer may be produced in a mould using as foaming agent azodicarbonamide, diphenylsulphone-3,31-disulphohydrazide or benzyl sulphonio acid-diphenyl hydrazide, and as cross-linking agent an organic peroxide, e.g. dicumyl peroxide, di-tertiary butyl peroxide or 1,3-bis-(tertiary butyl peroxy isopropyl) benzene, and then cut into sheets of the desired thickness. The surface of the layer of foamed material may then be heated to 60- 70 C. and pressed on to the resin-impregnated paper. Alternatively the layers may be bonded together using an adhesive. The laminate may be used in the production of furniture, boxes, partition boards and packing materials.
Patent GB-1487595-A (GB)
Title: Spreading disc brakes
IPC: F16D55/16
Filed: 1974-10-11
Abstract: 1487595 Disc brakes GIRLING Ltd 8 Sept 1975 [11 Oct 1974] 44099/74 Heading F2E In a brake of the kind where adjacent discs are forced apart by causing relative rotation of two pressure plates with interposed balls 3, the rotation is produced by a pull-rod acting in a radial direction P and the reaction torque is taken on a fixed anchor pin 11 which is diametrically opposite the pull-rod end and is engaged by lugs 12, 13 on the plates, the abutment surfaces on the lugs being inclined with respect to said radial direction so that the reaction is not normal to the applying force. The abutment surfaces diverge radially outwardly.
Patent GB-1461647-A (GB)
Title: Extruders
IPC: B30B11/22
Filed: 1974-10-11
Abstract: 1461647 Dough extruder H ROTTNER 11 Oct 1974 [11 Oct 1973] 44101/74 Heading B5A In an extruder for bread dough, a ring of rotating vanes 16 slices the dough from a dough supply 20 at an inlet 2 of a housing 11, and displaces it into a space 18 between the vanes 16 and a roller 12, which rotates with the vanes to convey the dough towards a stationary deflector 19, by which it is displaced between the vanes 16 and through an outlet 3 and a die 5 attached thereto. The roller 12 is rotated by a shaft 11, and the vanes 16 are planar and extend between a ring which rotates in a housing recess on one side, and a ring 13 on the other side which is detachably secured by pins 14 for rotation with the roller 12, e.g. at 5 to 10 revs./minute. The vanes 16, and the edge of the deflector 19 adjacent outlet 3, are inclined at 30 degrees to the radius, and the deflector 19 has edges adjacent the inlet and outlet which are respectively inclined at the same angle as, and at right angles to the vanes 16. The deflector 19 also acts as a scraper against the roller 12. The housing has a door 9 hinged at 10 for opening and removal and cleaning of the vane ring 16. The outlet 3 is cylindrical, and the passage 6 of the die 5 is pyramidial, with the sides respectively shown in Figs. 1 and 2 being inclined to each other at 20, and 90 degrees. Various dimensions and clearances are specified. The exterior surface of the deflector 19 and the opposed surface of the housing 1 extend over an arc which is at least the same as, or smaller than that between the vanes, respectively to prevent or permit some return flow of dough to the inlet 2.
Patent GB-1162227-A (GB)
Title: Translucent Synthetic Resins for Illumination purposes
Inventor: STREIB HUGO
IPC: C08K3/40
Filed: 1966-10-04
Abstract: 1,162,227. Lamps. FARBENFABRIKEN BAYER A.G. 4 Oct., 1966 [8 Oct., 1965], No. 44303/66. Heading F4R. [Also in Division C3] Illumination devices are made from a transparent thermoplastic polycarbonate rendered translucent by the incorporation of 0À5 to 5 wt. per cent of glass fibres or powder (see Division C3). Specified devices are coverings of light sources, luminous tubes, coverings in radio or television apparatus, measuring instruments and signalling devices, Venetian blinds, strip light fittings and luminous letters. In examples, the products of the invention are compared with similar material containing pigments (BaSO 4  + TiO 2 ) as opacifier and are stated to give greater light transmission with reduction in the distance at which the incandescent spiral of the light source can be recognized. The compositions of claim 6 of Specification 1,042,418 are disclaimed.
Patent GB-1542242-A (GB)
Title: 1-(4-phenoxyphenyl)-1,3,5-triazine derivatives processes for their preparation and their use as medicaments
IPC: A61K31/53
Filed: 1977-10-25
Abstract: 1-(4-Phenoxyphenyl)-1,3,5-triazines of the formula <IMAGE> in which the substituents are defined in Claim 2, are prepared. Compounds in which R<5> is hydrogen are obtained by reacting a compound of the formula <IMAGE> with a substituted carbonyl isocyanate. Reaction of the resulting compounds with an alkyl, alkenyl or alkynyl halide results in compounds in which R<5> is alkyl, alkenyl or alkynyl. The compounds can be used as active substances in coccidiostats.
Patent GB-1399902-A (GB)
Title: Partitioning
IPC: E04B2/72
Filed: 1972-09-28
Abstract: 1399902 Forms of wood JURY WALLING CO Ltd 28 Sept 1972 [28 Sept 1971] 44907/72 Heading B5L [Also in Division E1] Partitions are formed of panels comprising spaced parallel rectangular bonded wood chip particle boards fixed in spaced relationship by parallel strips 3 of woodchip particle boards bonded to the facing sheets 2. Plastics or aluminium trim strips may cover the joints between abutting sheets or a tongue and groove joint may be formed by bonding a strip 3 at the edge of the panel. The panels may engage upper and lower timber plates at the floor and ceiling, the strips 3 terminating short of the upper and lower edges.
Patent GB-1277798-A (GB)
Title: Controlled aeration system for a covered hopper railway car in transit
Inventor: COYLE EDWARD LEE
IPC: F25D17/08
Filed: 1969-09-12
Abstract: 1277798 Hopper cars ACF INDUSTRIES Inc 12 Sept 1969 45058/69 Heading B7L [Also in Divisions F1 and F4] A covered hopper railway car 10 comprises a pair of arcuate side sheets 12, a hollow side sill 16, forming an air conduit, extending longitudinally along the lower marginal portion of each side sheet 12, a hollow reinforcing side plate 14, forming an additional air conduit, extending longitudinally along the upper marginal portion of each side sheet 12, a bottom discharge structure 38, and branch conduits 92 extending between the side sills 16 and the bottom discharge structure 38 for passing air upwardly within the interior of the car to aerate the lading. Each discharge structure 38 includes a housing having an upper rectangular flange 40 which may be bolted to a superjacent flange 42 on the underside of each hopper car. A gravity gate 44 carried by the structure 38 is mounted thereon for sliding movement between open and closed positions. A rotatable pinion shaft 45 is provided for opening and closing gate 44. A lower cover 46 is carried by each bottom discharge outlet structure 38 beneath gate 44 and forms an air chamber 48 with gate 44. Cover 46 is mounted on links 50 for swinging movement between open and closed positions. Fixed to structure 38 is a pneumatic conduit 60 having a plurality of slots 62 therein leading to chamber 48. Gate 44 is perforated at 64 to permit an air flow from chamber 48 upwardly into the lading, such as perishable commodities.
Patent GB-976040-A (GB)
Title: Improvements in or relating to high tension electric cables
IPC: H01B7/22
Filed: 1963-11-15
Abstract: 976,040. Electric cables. J. S. MOLLERHOJ. Nov. 15, 1963 [Nov. 16, 1962], No. 45189/63. Heading H1A. In a flat-section oil-filled high-tension electric cable of the type in which the flat surfaces are supported by corrugated tapes which permit expansion of the oil, the corrugations are generally rectangular in cross-section with their longer sides in the longitudinal direction of the cable. As shown, Fig. 2, three insulated cores 12 are enclosed in a flat-sided lead sheath 14, itself spirally bound with flat overlapping tapes 20 of hard drawn copper or bronze. Over these tapes 20 on the flat surfaces of the cable is arranged corrugated bronze tape 22, held in place by wire lashings 24. The whole cable is surrounded by a tarred or bituminized jute serving the or other by other armouring. The corrugations of the tapes 22 are shown in Fig. 3. The longer sides of the rectangles may be up to six times the shorter sides. This construction provides increased strength with saving of material over the conventional isosceles triangleshaped corrugation. The corrugated tape may be in two parts contacting of which one 40 is narrower than the other. This arrangement is still more economical. Various arrangements by which the lashing wires can lie in the recesses of the corrugations are described. The invention is applicable to two core cables.
Patent GB-991645-A (GB)
Title: Process for polymerisation of vinyl chloride
IPC: C08F14/06
Filed: 1961-12-18
Abstract: Vinyl chloride is polymerized (optionally with vinyl acetate) in aqueous dispersion in the presence of a monomer-soluble polymerization catalyst and a water-soluble methyl-cellulose that has been prepared by reacting liquid methyl chloride with alkali cellulose at a temperature within the range of 40 DEG  C. and 90 DEG C. Catalysts used in examples are lauroyl peroxide and a mixture of lauroyl peroxide and acetylcyclohexane sulphonyl peroxide.  Other additives exemplified are sodium paraffin sulphonate, sodium carbonate, sodium bicarbonate, calcium chloride and calcium carbonate.  The methyl cellulose has preferably been homogenized before use and has a viscosity of 6 to 500 centipoises as measured in an aqueous solution of 2% strength at 20 DEG  C. in a Hoppler viscosimeter. The amount of methyl cellulose is preferably between 0.01 and 0.25% of the monomers used. The pH of the reaction mixture is preferably between 4 and 9.  Specifications 737,127 and 754,876 are referred to.
Patent GB-1336358-A (GB)
Title: Circuit arrangement for tuning and indicating the tuning frequency for high frequency receivers with capacity-diode tuning
IPC: H03J3/18
Filed: 1971-09-30
Abstract: 1336358 Tuning arrangements LOEWE OPTA GmbH 30 Sept 1971 [14 Oct 1970] 45461/71 Heading H3Q In a circuit arangement for tuning and indicating the tuning frequency for high frequency receivers with capacity diode tuning having a receiver oscillator 1 with a capacity diode, the output of the receiver oscillator 1 is fed to a frequency to D.C. transformer 2 which provides a D.C. output for comparison in a direct voltage amplifier 4 with a second adjustable D.C. voltage 3 obtained from the slider of a potentiometer 3 which is mechanically coupled to a pointer indicating the required frequency and the output D.C. voltage of the amplifier 4 controls the capacity diode of the oscillator 1 such that the oscillator frequency is proportional to the given second D.C. voltage. As shown adjustment of the potentiometer 3 is indicated on a frequency scale and provides adjustment to the input X2 of a differential amplifier 4. This alters the D.C. output from amplifier 4 which is fed to the capacity diode tuning circuits of the oscillator 1 and r.f. circuit 5 of the receiver. The change in frequency of the oscillator produces a D.C. output from the frequency to D.C. transformer 2 at input X1 of the differential amplifier the same as the voltage at X1. Linear tuning may be provided by a linear potentiometer 3. The receiver may be a radio or television. The frequency to D.C. transformer 2 may be a series connection of a limiter amplifier (2À1, Fig. 2, not shown) a differentiating network (2À2), a monostable multivibrator (2À3) and an integrating network (2À4). In a modification to this frequency to D.C. transformer the monostable circuit may be replaced by a bi-stable multivibrator and a delay line (Fig. 3, not shown).
Patent GB-1030096-A (GB)
Title: Improvements in and relating to closure caps
IPC: B65D41/04
Filed: 1964-11-09
Abstract: 1,030,096. Container closures. ANCHOR HOCKING GLASS CORPORATION. Nov. 9, 1964 [Nov. 8, 1963], No. 45624/64. Heading B8T. A bayonet joint cap with peripherally spaced locking lugs 5 which engage thread portions 18 of a container, has the upper portion 6 of its skirt inset from the lower portion 7, and a sealing gasket 9 is seated above an inclined wall 21. When unstressed the gasket is rectangular in cross-section and its lower inner corner contacts a sealing surface 19 on the container rim. On securing the cap, the gasket is compressed, and the wall 21 squeezes it inwardly against the container wall. The cap has a shoulder 12 providing a central dished part.
Patent GB-1468459-A (GB)
Title: Brushless dc motor driving circuit arrangements
IPC: H02P6/06
Filed: 1974-10-23
Abstract: 1468459 Control of brushless motors SONY CORP 23 Oct 1974 [30 Oct 1973] 45774/74 Heading H2J The windings 2a, 2b, 2c of a brushless D.C. motor are controlled by switching transistors 3a, 4a; 3b, 4b; 3c, 4c and control transistors 5a, 5b, 5c therefor, the latter being controlled by a rotor position sensor comprising logic circuits 7a, 7b, 7c respectively responsive to the voltages Va, Vb, Vc induced in the windings 2a, 2b, 2c and respectively controlling the transistors 5c, 5a, 5b, whereby the supply of current to the windings 2a, 2b, 2c is respectively controlled by the voltages Vb, Vc, Va. Current overlap between the windings is prevented by interconnecting the collectors and bases of the transistors 9a, 9b, 9c of the circuits 7a, 7b, 7c as shown, whereby the voltage Vb for example, cannot turn off its associated transistor 9b and hence cause switchon of transistors 5a, 3a, 4a, until the voltage Va has fallen to zero to allow its associated transistor 9a to turn on and so cause switch-off of the transistors 5c, 3c, 4c. Typical waveforms for the voltages Va, Vb, Vc and the current in winding 2a are discussed. Figs. 2 and 3 (not shown), with reference to the conduction period of each winding. In Fig. 4 the transistors 9a, 9b, 9c of the circuits 7a, 7b, 7c respectively control transistors 17a, 17b, 17c of multivibrators 16a, 16b, 16c respectively controlling transistors 5a, 5b, 5c, the multivibrators 16a, 16b being of monostable type and multivibrator 16c being astable. To start the motor, D.C. sources 1, 8 are connected and the multivibrators 16a, 16b, 16c operate as a ring counter to sequentially switch on the transistors 5c, 3c, 4c; 5b, 3b, 4b; 5a, 3a, 4a, each motor winding being energized for a period T determined by the (equal) time constants of circuits 19a, 20a, 21a; 19b, 20b, 21b; 19c, 20c, 21c, with a time delay T<SP>1</SP> between connection of sources 1, 8 and switch-on of transistors 5c, 3c, 4c being determined by the time constant of circuit 19<SP>1</SP>c, 20<SP>1</SP>c, 21<SP>1</SP>c, Fig. 5 (not shown). The latter time constant is chosen to satisfy the condition (n - 1)T <T<SP>1</SP> where n is the number of motor windings. After starting of the motor the multivibrators 16a, 16b, 16c cease to function as a ring counter, each then being controlled by a respective circuit 7a, 7b, 7c to control the motor in a similar manner to that for Fig. 1, the period T being chosen, if desired, to be longer than the conduction periods of the windings 2a, 2b, 2c. Circuits 22a, 23a; 22b, 23b; 22c, 23c delay the induced voltage signals from the motor windings to optimise each winding conduction period, that for winding 2a being discussed. Fig. 3 (not shown).
Patent GB-1231298-A (GB)
IPC: F16D55/226
Filed: 1969-09-18
Abstract: 1,231,298. Making disc-brake caliper housings. GENERAL MOTORS CORP. 18 Sept., 1969 [1 Oct., 1968], No. 46038/69. Heading B3A. [Also in Division F2] A disc brake caliper housing 30 is made from a section of pipe 82 extruded from an extrusion die 84. The pipe 82 is transversely severed to provide a plurality of pipe units 86 each of which is then notched by broaching to form the housing 30; alternatively the notching operation may be performed prior to the severing of the pipe 82. Longitudinally extending passages 78, 80 are provided in the extrusion process. The notch 52 is utilized to accommodate a brake disc and friction pads, and hydraulic pistoncylinder assemblies are provided in end portions 46, 48 of the caliper housing 30.
Patent GB-928996-A (GB)
Title: Gas turbine engine
Inventor: PALFREYMAN JACK
IPC: F23R3/22
Filed: 1961-12-27
Abstract: 928,996. Generating combustion products under pressure. ROLLS-ROYCE Ltd. Dec. 27, 1961, No. 46352/61. Class 51 (1). [Also in Group XXVI] A gas turbine engine 1 has an exhaust duct within which is mounted a plurality of segmental members each having a channel portion and being movable by power means between an inoperative position in which they merge into a flow defining wall of the exhaust duct and an operative position in which they collectively constitute a substantially annular combustion stabilizing member in the path of the turbine exhaust gases, reheat fuel injector means being disposed upstream of the segmental members. The segmental gutter members 17, having a downstream facing channel portion 18, are mounted within the jet pipe inner wall 16 by arms 21 secured to a pivot 22 mounted in a pair of roller bearings. Each pivot 22 has a flange 25 connected by rod 26 to a piston-rod 27 of a double-acting ram 28. In the inoperative position the members 17 and arms 21 are received in angularly spaced apart recesses in the jet pipe inner wall 16. Cooling air from the low pressure compressor is supplied to a manifold 42 and thence through conduits 43 to the pivots 22. Alternatively, each arm 21 may be loosely mounted on its pivot. An exhaust cone 44 is supported from the jet pipe by struts 45 each of which is aligned with a reheat fuel injector pipe 46. Means may be provided for moving the injector pipe 46 in and out of the path of the exhaust gases. The reheat fuel may be ignited by the ignition of a small quantity of fuel injected into the combustion equipment 12. A catalytic igniter is provided to maintain reheat combustion. Means may be provided for preventing pivotal movement of the gutter members beyond the operative and inoperative positions and for slowing down movement of the members by the use of stops or dashpots.
Patent GB-1200946-A (GB)
Title: An arrangement for the speed control of a direct-current motor
IPC: H02P7/298
Filed: 1967-10-11
Abstract: 1,200,946. Control of D.C. motors. LICENTIA PATENT-VERWALTUNGS G.m.b.H. 12 Oct., 1967 [14 Oct., 1966], No. 46411/67. Heading H2J. The armature 1 of a D.C. motor is supplied from three-phase mains R, S, T, through a controlled rectifier bridge 2, the field winding 3 being arranged in a further bridge of controlled rectifiers 4-7 shunted by a free-wheeling diode 8. The field winding is supplied from diode bridge 10 through controlled rectifier 9. The motor is operated in one direction when the rectifiers 4, 5, are conductive. To reverse the motor, the rectifier 9 is turned-off, the field winding discharging through the diode 8 and the rectifiers 4, 5, which are cut-off automatically. To accelerate the rate of discharge, a resistor 11 is connected in series with the diode 8 or a shunt capacitor 12 is provided. In addition, a resistor 13 may be connected in parallel with the field winding and chokes 14, 15, arranged in the bridge 10. When the field winding is fully discharged, the rectifier 9 is again rendered conductive, and the rectifiers 6, 7, are turned-on to reverse the field energization. Simultaneous conduction of the pairs of rectifiers 4, 5, and 6, 7, is prevented.
Patent GB-1399869-A (GB)
Title: Deflection waveform generator
IPC: H04N3/16
Filed: 1971-10-12
Abstract: 1399869 Deflection current generators RCA CORPORATION 10 Oct 1972 [12 Oct 1971] 47423/71 Heading H3T In a deflection wave generator of the type in which a capacitor 48 is charged through a resistance 43, shaping (e.g. to S form) is effected by connecting an active device 51 across the capacitor and controlling its conduction from a further capacitor 49 coupled to the charging circuit. Thus, as shown, the voltage developed across resistors 46 and 47 by the main charging current charges capacitor 49 during the first part of the sweep to cause the transistor 51 to shunt a decreasing current from the main capacitor 48 and so produce the initial S-shaping. The corresponding shaping of the second part of the sweep results from the exponential charging curve. Discharge of capacitor 48 is effected by a transistor 55. The discharge current causes transistor 44 to conduct and assist discharge of capacitor 49. Resistor 54 provides positive feedback to assist the action of transistor 51 and capacitor 56 increases stability. The generator may drive a complementary or quasi-complementary output stage and negative feedback may be fed from a deflection current sensing resistor to the input of the output stage so that the S-shaping circuit is excluded from the feedback loop.