baber/WOPTO huggingface dataset:
Patent GB-1021401-A (GB)
Title: Novel antibiotics and processes for their manufacture
IPC: C07H15/236
Filed: 1962-10-16
Abstract: Antibiotics gentamycin and/or BA-3 (fractions A and B) may be produced by incubating a microorganism of the species Micromonospora purpurea or Micromonospore echinospora, or a gentamycin and/or BA-3 producing mutant or variant thereof, until at least one compound having substantial antibiotic activity is produced and isolating at least one of the antibiotic compounds thus produced.  The microorganism may be M. purpeyea NRRL 2953, M. echinospora NRRL 2985, Mechinospora var. ferruginea NRRL 2995 or M. echinospora var. pallida NRRL 2996.  The micro-organism may be incubated under submerged aerobic conditions at a temperature from 25 DEG  to 40 DEG  C. and a pH from 6 to 8 in an aqueous nutrient medium containing assimilable carbon and nitrogen and, after incubation, the mycelium is extracted with acid and the antibiotic recovered from the acid extract by adsorption or fractionate salt precipitation or a combination of both methods.  Gentamycin is a basic organic substance having a melting point of 102 DEG  to 108 DEG  .C with decomposition, a specific optical rotation [a ]25D = + 146 degrees (1% in water), an elementary analysis C = 50.40%, H = 8.52%, N = 13.47%, 0 = 27.81% and a M.W. of 543; it is very soluble in water, aqueous acid media and methanol and substantially insoluble in ether, benzene and halogenated hydrocarbons; it is transparent to U.V. radiation in the range 220 to 400 mm .  The Specification gives details of its I.R. spectrum and antibacterial spectrum, and also refers to salts of gentamycin with acids, reaction products with bisulphite addition compounds of aldehydes and ketones, N- and O-acyl derivatives of gentamycin and Schiff's bases derived therefrom.  BA-3 contains C, H, N and O, with no other elements present and has solubility characteristics similar to gentamycin; it is transparent to U.V. radiation in the range 220 to 400 mm  and forms a sulphate which is a white amorphous powder, soluble in water and insoluble in ethanol, methanol and acetone. BA-3 may be resolved into fractions A and B by paper chromatography.ALSO:Pharmaceutical compositions suitable for use for injections, as topical ointments and as ophthalmic drops contain gentamycin sulphate with usual pharmaceutical carriers.  The ophthalmic drops may also contain phenyl-ethyl alcohol.
Patent GB-1154072-A (GB)
Title: Electronic Circuit Arrangement for Generating High Power Pulses.
IPC: H03K3/57
Filed: 1966-09-01
Abstract: 1,154,072. Semi-conductor pulse circuits. GENERAL DYNAMICS CORP. 1 Sept., 1966 [27 Sept., 1965], No. 39166/66. Heading H3T. In a pulse generator of the type in which a capacitor 22 is charged via a thyristor 20 and later discharged into a pulse forming network 52 under control of a thyristor 40 and saturable transformer 38, the voltage across capacitor 22 is sensed by a circuit such as 24 arranged to turn off thyristor 20 and terminate each charging cycle of capacitor 22. Thyristor 20 is retriggered at a time after thyristor 40 determined by a delay circuit including silicon controlled switch 86. The energy of pulses provided by discharging the pulse forming network 52 into a magnetron 56 is thus maintained constant. Capacitor 22 is preferably arranged to charge resonantly via transformer 18 to twice the voltage of a high voltage rectifier 10, each time thyristor 20 is triggered by a circuit 42. Thyristor 40 is then triggered by circuit 70, saturating reactor 34 and allowing capacitor 22 to transfer its charge to the pulse forming network 52. When capacitor 22 is discharged, thyristor 40 becomes non conductive. A current from PFN 52 now builds up, saturating transformer 38 and allowing 52 to discharge via transformer 54 into a magnetron load 56. Trigger circuits for thyristors 40, 20, 26.- Thyristor 40 is triggered by a pulse fed to the base of transistor 72, the output of which is coupled via transformer 74 to thyristor 40. Capacitor 22 is recharged after each pulse by thyristor 20, triggered from an output of transistor 72 after delay in a circuit comprising a four-terminal silicon controlled switch 86 and unijunction transistor 102. The voltage across capacitor 22 is sensed by a circuit 24 in which transistor 130 becomes conductive when the voltage on 22 reaches a predetermined level (set by potentiometer 128) turning on transistor 138 and Shockley diode 140, the pulse so generated being amplified by transistor 148 and used to turn on thyristor 26 which provides a turn-off voltage via transformer 18 to charging thyristor 20, thus terminating the charging of capacitor 22. Protection circuits.-Shockley diode 50 and Zener diode 126 respectively protect circuits 40, 24.
Patent GB-868300-A (GB)
Title: Improvements in and relating to electro-mechanical voltage regulating means
Inventor: HALLIDAY WILLIAM
IPC: H01H3/26
Filed: 1956-12-24
Abstract: 868,300. Automatic regulators. KELVIN & HUGHES Ltd. March 11, 1958 [Dec, 24, 1956], No. 39193/56. Class 38 (4). Changes in the supply voltage between terminals 25 and 25<SP>1</SP> are compensated for by changes in that part of a tapped resistance 26 in series with the output to terminals 28 and 28<SP>1</SP> by utilizing the change in torque of a series D.C. motor 23, 24 to adjust the angular position of brushes 20, 21 moving over the segments of a commutator 12. A centrifugal brake, the drum of which carries the brushes and moves angularly against a spring in accordance with the speed of the rotor shaft of the motor may be used, the commutator 12 being fixed relative to the stator, or the stator itself may carry the brushes and rotate against a spring to effect the compensation in accordance with motor torque.
Patent GB-854470-A (GB)
Title: Method and apparatus for making cigarette filter rods
IPC: A24D3/02
Filed: 1958-12-08
Abstract: 854,470. Making cigarette mouthpieces. OLIN MATHIESON CHEMICAL CORPORATION. Dec. 8, 1958 [Dec 23, 1957], No. 39508/58. Class 130 [Also in Group XXX] Axially aligned sets of differing filter elements and/or hollow tubes A, B, Fig. 1, assorted by having been shuffled as in Specification 842,491, are discharged by cam-operated plungers 14, Fig. 2, from a grooved drum 10 into a channel 16 from which pegs 18 of a chain conveyer 19 sweep them into a tube 21 where chamfered pegs 26 of a chain conveyer 24 which have a one way action keep them in mutual contact whilst they pass on a paper web 29 and a supporting tape through a garniture where the web is wrapped and glued around them to form a continuous rod from which an orbital disc knife cuts off filter rod lengths. To ensure that cut-off is between or central of filter elements, a motor drives the knife through gearing of invariable ratio and the drum 10 and conveyers 19, 24 through gearing of manually varable ratio.
Patent GB-840567-A (GB)
Title: Improvements relating to electric kettles
Inventor: PARKER JACK FORDHAM
IPC: A47J27/21
Filed: 1957-12-20
Abstract: 840,567. Electric kettles. FORDHAM PRESSINGS Ltd. Dec. 16,1958 [Dec. 20, 1957], No. 39672/57. Class 39(3). [Also in Group XVII] An electric kettle, formed in two separately moulded parts A, B of synthetic plastics material subsequently joined by welding, is fitted with an electric heating element 120. The part B of the kettle may simply form a flat bottom portion, Fig. 9 (not shown), welded to the part A which then constitutes a main body portion in which the electric element is secured. The kettle may be square ; and, as shown, is made of high tensile polythene.
Patent GB-1148616-A (GB)
Title: Improvements in or relating to azeotropic compositions
Inventor: AOYAMA SHIRO
IPC: C11D7/50
Filed: 1967-08-30
Abstract: 1,148,616. Azeotropic composition. DAIKIN KOGYO CO. Ltd. 30 Aug., 1967, No. 39683/67. Heading C5D. An azeotropic composition comprises 42À8% by weight of 1,1,2,2-tetrachloro-1,2-difluoroethane and 57À2% by weight of ethylene dichloride having a b.p. 80À9 C. at 760 mm.
Patent GB-1183835-A (GB)
Title: Improvements in or relating to the Regulation of Cooling-Air Flow in Gas Turbines.
Inventor: MUDRAK LUBOMIR
IPC: F01D5/08
Filed: 1967-08-31
Abstract: 1,183,835. Cooling gas turbines. PRVNI BRNESKA STROJIRNA, ZAVODY KLEMENTA GOTTWALDA, NARODNI PODNIK. Aug.31, 1967, No. 39883/67. Headings FIG and F1T. The flow of cooling air through passages formed between the axially extending blade grooves 1 and the blade roots of a multi-stage gas turbine is regulated by plates 2, mounted in the blade grooves immediately upstream of the final row of blades, which throttle the air flow. The plates 2 may be provided with throttling slots 3 or circular throttling openings (3, Fig. 2, not shown).
Patent GB-860426-A (GB)
Title: Arrangement for holding light constructional sheets and the like
IPC: E04B9/22
Filed: 1958-12-11
Abstract: 860,426. Ceilings. GROHMANN, E. Dec., 11, 1958, No. 39971/58. Class 20(4)  False ceilings are supported by lamellashaped holding elements standing perpendicularto the plane of the sheets, the lamella being supported freely movable in their longitudinal, direction on longitudinal girders and/or being attached to the girders by means of tension springs In Fig. 1 lamellae 13 extending in vertical planes attached under tension by tension springs 11, 12 to girders 10a, 10b secured to the walls of a room, carry bidging members 15 having slots which receive the lamellae. Insulating sheets 17a, 47b are secured to the under surfaces of the bridging members 15 which may be flush with or may project below, the bottom edges of the lamellae. In an alternative-construction for supporting the lamella from a girder secured to the wall of the room, the girder may have a rail 20, Fig. 2 which is slotted to receive the lamellae tensioning springs 21 being provided between the girder and the upper region of the lamella. In a further modification the girder secured to the wall may be provided with riders 26, Fig. 3a, having a vertical part slotted to receive a lamella. The insulating sheets 17a, 17b may be secured to the under surfaces of the bridging members 15 by adhesive or may be secured !to the under surface of the bridging members 15 or lamellae 13- by-means of permanent or electric magnets, e.g. a series of magnetic plates secured to the sheets bridging members or lamellae and further magnetic plates or unmagnetised ferromagnetic plates secured to corresponding parts of the sheets, bridging members or lamellae to cooperate with the said series of magnetic plates. The bridging members 15 may extend normally or diagonally with respect to the lamellae and can engage the lamella at selected heights to compensate for sag of the lamella.
Patent GB-1071774-A (GB)
Title: Liquid fuel pumping apparatus for supplying fuel to internal combustion engines
Inventor: EVANS FRASER MACKIE
IPC: F02M41/14
Filed: 1964-02-11
Abstract: 1,071,774. Fuel injection pumps. C.A.V. Ltd. Jan. 28, 1965 [Feb. 11, 1964], No. 40149/63. Heading F1A. In a fuel injection pump comprising a rotating distributor body 11, with pumping pistons 14 reciprocated by a cam track 16 and supplied by a vane-type feed pump 18 via a throttle valve 32, the quantity of fuel supplied to pumping chamber 13 is regulated by a stepped shuttle 29. The inner end of shuttle 29 is connected to the outlet 36 of throttle valve 32 via distributor grooves 37, 38 during the delivery stroke of the pump, thereby moving shuttle 29 outwardly to an extent limited by an adjustable stop 30. On further rotation of the distributor for the pump suction stroke, a distributor passage 23 registers with the space above shuttle 29, and the fuel above the shuttle is fed to the pumping chamber 13. The chamber 26 at the outer end of the shuttle communicates with the feed pump outlet. Throttle valve 32 has an annular groove communicating via an axial passage with its inner face, and is controlled by the feed pump pressure and a spring 33 adjustable manually by a lever 35, to control port 36 and thereby control the rate of supply of fuel from the feed pump to shuttle 29. The feed pump output pressure is regulated by a relief valve 21 so as to be proportional to engine speed. In another embodiment, the shuttle 29 comprises two separate parts of different diameters, Fig. 5 (not shown).
Patent GB-926630-A (GB)
Title: Improvements in hydrocyclone design
IPC: B04C5/28
Filed: 1959-12-02
Abstract: 926,630. Centrifugal separators. T. R. NAYLOR. Nov. 23, 1960 [Dec. 2, 1959], No. 40873/59. Class 23. In separating apparatus comprising a group of hydrocyclones and an inlet chamber, the inlet passage of each hydrocyclone is connectable either to the chamber or to the overflow outlet of another of the hydrocyclones. As shown, the apparatus is connected with hoses, plugs and nozzles to give a series flow through the hydrocyclones. The hydrocyclones 2a, 2b, 2c, 2d have inlets 10a, 10b, 10c, 10d which are connected to bores 8a, 8b, 8c, 8d each having one end connected to the inlet chamber 20 and the other end opening out of the common head 4 of the hydrocyclones. Plugs 22 are inserted into the upper end of the bore 8a and into the lower ends of the bores 8b, 8c, 8d, nozzles 14b, 14c, 14d are inserted into the overflows of the hydrocyclones 2b, 2c, 2d, so that hoses 16a, 16b, 16c 16d may be arranged to connect the hydrocyclones for series flow, the hose 16d being connected to a discharge connection 26. The apparatus may be arranged for parallel flow by plugging the tops of all the bores, fitting shorter nozzles into the overflows of all the hydrocyclones, and fitting a cover-plate to the head 4 to form an overflow collecting chamber. The hoses, plugs, and nozzles may be arranged to give a combination of series and parallel flow through the hydrocyclones.
Patent GB-965327-A (GB)
Title: Process for purifying polymers contaminated by metal compounds and for recovering alcohols used therein
IPC: C08F6/02
Filed: 1962-10-30
Abstract: Polymers obtained as suspensions by polymerization of olefines in saturated hydrocarbons in the presence of metal compounds as catalysts are freed from metal contaminants by treating such suspensions with hydrogen chloride and an alcohol that is not homogeneously miscible with water in all ratios, then washing with not more than 10% by volume of water (based on the volume of the suspension), after which the aqueous layer and the organic layer are separated and purified polymer is recovered and alcohol is recovered from the organic liquid by distillation. Suitable alcohols are n-butanol, isobutylalcohol, secondary butyl alcohol, amyl alcohol, secondary amyl alcohol, secondary-isoamyl-alcohol and other alcohols with more than 5 carbon atoms per molecule. Usually alcohols that distil azeotropically with the hydrocarbons used, are employed. Homogeneous mixtures of alcohols and hydrocarbons obtained by such distillation may be used for the purification of polymer suspensions instead of alcohols alone. Hydrocarbons mentioned are propane, butane, pentane, hexanes, heptanes and octane.  The hydrogen chloride and alcohol may be added simultaneously or in stages to the suspension which is preferably at temperatures between 50 DEG  and 100 DEG C. and preferably the amount of hydrogen chloride is less than 1% by weight of the polymer suspension.  The washing with water may be carried out in stages, the separated washing water from at least one stage being preferably recycled to a preceding stage. In each stage, the polymer suspension is mixed with washing water and then separated from the washing water. After separation of the polymer by known methods, the filtrate which is a mixture of hydrocarbons and alcohol is subjected to distillation, e.g. azeotropic distillation, preferably in two or three columns. In the example the polymer to be purified was polypropylene obtained by using as catalyst a mixture of titanium tetrachloride, triethylaluminium and diethylaluminium chloride. Other polymers mentioned are polyethylene and ethylene-propylene copolymers.
Patent GB-987147-A (GB)
Title: Programming matrix system
IPC: G11C17/06
Filed: 1962-11-02
Abstract: 987,147. Permanent data stores. A. PERRET, and C. PERRET. Nov. 2, 1962 [Nov. 29, 1961], No. 41502/62. Heading G4A. [Also in Division H1] A permanent data-store for the programming of calculating machines or machine tools comprises a stack of parallel plates 309 (only two shown in Fig. 17) with linear conductors 311 on each face, a network of conductors (not shown) at their rear, and removable slides carrying elements such as diodes insertible between the plates and making contact with selected areas 339 of the conductors 311, and with parts of the rear network by means of plugs 333, 334 which engage sockets in that network. Fig. 4 shows part of a carrier having a common conductive strip 315 joined to plug 334 of Fig. 17, clip-in sockets 314 for correspondingly shaped diodes 313, and a handle 318 for insertion and withdrawal; in this case the top ends of the diodes contact the underface of a plate, other arrangements of carriers providing alternative or additional contacts to an upper face are described and illustrated.
Patent GB-874051-A (GB)
Title: Improvements relating to analogue-to-digital converters
Inventor: FLOOD JOHN EDWARD
IPC: H03M1/00
Filed: 1958-12-23
Abstract: 874,051. Circuits employing bi-stable magnetic elements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Dec. 22, 1959 [Dec. 23, 1958], No. 41562/58. Class 40 (9). [Also in XL (c)] A binary coder includes a plurality of normally non-conducting transistors Tm-1, Tm, Tm+1, which are differently biased to conduct each in response to a respective range of input signal levels each range including the relevant quantizing level. The input signal is supplied via a transistor T to the bases of the transistors Tm - 1 &c., the bases being connected in common through respective resistors R1m - 1, R1m, R1m + 1, and the emitters being connected to respective reference potentials provided by a potentiometer chain R. Non- linear quantization may be obtained by making the voltage increments between quantizing levels unequal, or alternatively by increasing the values of the resistances in the voltagedividing chain R so that instead of the emitter biasing remaining substantially constant as with a low resistance chain, each transistor on becoming conductive will lower the emitter potentials of those relating to higher quantizing levels and so increase the size of the quantization steps. The collectors of the switching transistors are connected to respective crossover points in a matrix of saturable core inductors F which are arranged to represent the digital equivalents of the respective quantizing levels. Each ferrite core is threaded by a digit connection d1, d2 or d3, and by a resetting connection P1, P2 or P3, and has a setting winding S1 and an inhibiting winding S2 which is wound in opposite sense and has more turns than the winding S1. In this embodiment the switching transistors also become conductive in response to quantizing levels higher than that to which they relate and the inhibiting windings are connected so that for any particular quantizing level the only cores F to be switched will be those having their setting windings S1 in the collector circuit of the transistor relating to that level. Pulses applied to the resetting connections P1, P2, P3 instantaneously or sequentially as desired, produce a digital output on the connections d1, d2, d3. In a modification, Fig. 2 (not shown), clamping diodes are connected to the bases of the switching transistors and the biasing is arranged so that only one transistor conducts for each quantizing level.
Patent GB-904034-A (GB)
Title: Improvements in and relating to pit props
IPC: E21D15/58
Filed: 1958-12-30
Abstract: 904,034. Hydraulic pit props. GROETSCHEL, K. M. Dec. 30, 1958 [Dec. 30, 1957], No. 42014/58. Class 20 (2). A telescopic pit - prop comprises an hydraulicallyoperated piston 8 in a cylinder 7 in the outer prop part 1 adapted to set the inner prop part 2 against the mine roof and a friction lock 12 clamping the prop parts 1 and 2 together, operated by an hydraulic cylinder 13 connected to the hydraulic system of the piston 8 so that on yielding of the prop under mine roof pressure the resultant increase of pressure in the cylinder 7 is transmitted to the cylinder 13 to increase the clamping pressure. The cylinder 7 of the piston 8 is mounted on a pivot 3. The piston 13 operates a wedge 16 adapted to force out a rod 18 mounted in clamping wedges 17. The reservoir comprises the cylinder space above the piston 8 and two tubes 11. In a modification the friction lock comprises a wedge 28, Fig. 4, pressed against the inner prop part by a nut 25 turned by a ratchet lever 24 operated by two opposed cylinders 21 having a common pistonrod 22. The nut 25 turns on a spindle 26 which may be screw-adjustable.
Patent GB-1197943-A (GB)
Title: Bulked, Balanced Yarn and Method for the Manufacture thereof
IPC: D02G3/22
Filed: 1967-09-14
Abstract: 1,197,943. Crimping and twisting yarns. ALGEMENE KUNSTZIJDE UNIE N.V. 14 Sept., 1967 [15 Sept., 1966], No. 42021/67. Headings D1F and D1W. A bulked, balanced yarn comprises two or more multifilament, thermoplastic e.g. nylon, components, each of which is virtually free of real twist but possesses high twist-liveliness i.e. a tendency to crinkle, turn about its axis and form loops, and combines the properties of a tenacity of at least 4.5 grammes per denier, elongation at break (measured from the straightened condition) of less than 25% and a crimp rigidity (the quotient of the length by which a crimped yarn can contract and the straightened length thereof) of less than 40%. The components, each of which may have a total, initially drawn denier of 150- 300 with individual filament denier of 4-8 and high tenacity e.g. at least 7 grammes per denier, are heat set whilst temporarily (and oppositely) highly twisted e.g. 1929 turns per metre, and, perhaps, stretched e.g. 0.5-2% and subsequently (after permissable contraction of 4-6%) plied with 80-120 turns per metre doubling twist. A tensioned or stretched elastomeric thread e.g. of rubber or a segmented polymer, constituting 2-5% by weight of the yarn may be incorporated during plying.
Patent GB-1519508-A (GB)
Title: Process for the manufacture of homogeneous thermoplastic compositions in the form of ribbon or granules
IPC: C08L33/00
Filed: 1975-10-16
Abstract: 1519508 Homogeneous thermoplastic ribbons and granules CHEMISCHE WERKE HULS AG 16 Oct 1975 [19 Oct 1974] 42416/75 Headings C3M and C3N Homogeneous thermoplastic compositions in the form of ribbon or granules are prepared by a process in which a mixture of (a) 100 parts by weight of saturated or unsaturated polyolefin rubber having a raw strength of at least 20 kp./cm.<2> at 25‹ C. and a Mooney viscosity of 20 to 150 (ML1+4 at 100‹ C.), which can optionally contain up to 25 weight per cent of another polyolefin or another elastomer, and (b) 25 to 900 parts by weight of bitumen, is homoggenized, the homogeneous mass is cooled and converted into a sheet and the sheet is cut into ribbons and optionally granulated. The polyolefin may be a polyethylene, polypropylene, polybutene or olefin copolymer other than those defined, and the elastomer may be a conjugated diene or olefin copolymer rubber other than those defined. The compositions may contain fillers, e.g. chalk, carbon black and plasticizer oils, and may be blended with further bitumen. Examples describe the processing of mixtures of bitumen with ethylene/propylene rubber, ethylene/propylene/ethylidene norbornene rubbers and optionally polyethylene, and ethylene/ propylene/dicyclopentadiene rubbers and optionally natural, styrene/butadiene or ethylene/ propylene/ethylidene norbornene rubbers.
Patent GB-1451456-A (GB)
Title: Method of increasing the quantity of acetylene storable in a  container
IPC: C10L3/02
Filed: 1973-09-19
Abstract: 1451456 Acetylene mixtures AGA AB 19 Sept 1973 [19 Sept 1972] 42440/73 Heading C5E [Also in Division F4] An acetylene mixture which allows the quantity of acetylene storable in a container to be increased without increasing the tendency of the acetylene to decompose, contains acetylene and up to 10% by volume of ethylene, propane, propylene and/or butadiene.