baber/WOPTO huggingface dataset:
Patent GB-1336616-A (GB)
Title: Transistor switching circuit
IPC: H03M1/00
Filed: 1971-05-28
Abstract: 1336616 Transistor switching circuits SOC ITALIANA TELECOMUNICAZIONI SIEMENS SpA 28 May 1971 [18 Nov 1970] 17880/71 Heading H3T [Also in Division G4] In a transistor switching circuit having a first transistor T 1  with its emitter and base connected to first and second connections B, A of a stabilized reference voltage V 2 , V 1 , the emitter is connected to the first connection through a resistor R 1 , the emitters of second and third transistors T 2 , T 3  forming a long-tail pair are connected to the collector of the first transistor T 1  and the collectors of T 2  and T 3  are connected to a load formed by a linear resistive network R, 2R and a dummy load <SP>2</SP>/ 3 R and the bases of T 2  and T 3  are connected to third and fourth connections V i , #V i  for receiving a binary control signal so that in operation the transistors T 2  and T 3  conduct alternately, according to the binary signal applied, to lead current respectively to the load and dummy load. Resistors R and 2R form a linear network for analogue to digital conversion. Complementary control signals V i  and #V i  are fed to the transistors T 2  and T 3  which conduct alternately. When T 2  conducts the current I 0  is injected in the branch point c of the linear network. When T 3  conducts the current I 0  is deflected on the dummy load <SP>2</SP>/ 3 R. A series of transistor current supply circuits as described above can be used to feed the various branch points along the network. The transistors of all the current supplies operate at the same temperature by placing them close together which causes approximately equal variations in current I 0  which causes a drift in the D.C. component of the output signal S. A Zener diode can provide the stabilized voltage V 2  - V 1  between A and B. Also a diode may be connected in series with the Zener diode to compensate for variation of V be  of T 1  with temperature.
Patent GB-896597-A (GB)
Title: Improvements in or relating to apparatus for astronomical navigation
Inventor: MICHAUD ROBERT ANTOINE HENRI
IPC: G01C1/10
Filed: 1958-06-04
Abstract: 896,597. Photo-electric direction-finders. SUD-AVIATION, SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. June 4, 1958 [June 17, 1957], No. 17881/58. Addition to 842,444. Class 40(7). In an apparatus for measuring the apparent zenith distance of a heavenly body as described in the parent Specification in which a sextant is set to an approximate position and a correction applied by averaging by electronic counters a large number of readings of the position of an image of the heavenly body, the image falls on a rotating drum 54 and passes via slots 55 and a reflecting prism 59 to a photo-multiplier 58 which controls the electronic counters. Pulses are produced by a disc 60 which is attached to the drum and is provided with radial marks to cooperate with a lamp 62 and a photo-cell 63. The photo-multiplier is connected to amplifiers and switches to gate the pulses into the electronic counters. The drum 54 may be provided with an inclined slot 65 behind each slot 55 which serves to give a correction for an approximate bearing.
Patent GB-1482874-A (GB)
Title: Method of producing surface-protected extruded shapes of aluminium and aluminium alloys
IPC: C23C22/74
Filed: 1975-04-30
Abstract: 1482874 Surface treating aluminium extrusions; electro-phoretic deposition KANSAI PAINT CO Ltd and FUJI SASHI INDUSTRIES Ltd 30 April 1975 [2 May 1974 (2) 8 May 1974 (2) 24 July 1974 29 July 1974] 17913/75 Headings C7B and C7U A process for surface protecting Al and Al alloy extrusions comprises extruding the Al or Al alloy, cooling the extrusion, reforming by rolling,' cutting the reformed extrusion and coating with an aqueous solution or dispersion containing at least one of the salts of silicic acid, boric acid, phosphoric acid, molybdic acid, vanadic acid, permanganic acid, tungstic acid, stannic acid and chromic acid and then heat-treating. Extrusion may be effected at 400‹-500‹C at 15-80m/min. and cooling to no higher than 100‹C by liquid N 2 , water or air. The reforming by rolling is preferably effected under N 2  and the coating solution or dispersion preferably containing 5-60 wt. per cent of the oxyacid salt is applied by spraying, electrostatic spraying, immersion or electro-phoresis. Heattreatment is then carried out at 200-230‹C. Prior to coating, the cut extrusion may be treated in water or steam to form a boehmite layer or in a solution to form a chemical conversion coating such as a phosphate, chromate, silicate or oxide. A final organic coating e.g. of a natural or synthetic resin, preferably containing 0À1-10% of one of the specified oxyacid salts may then be applied by brushing, spraying, electrostatic spraying or electrophoresis. Numerous examples of both coating materials are specified.
Patent GB-935212-A (GB)
Title: Improvements in or relating to reconstituting tobacco
Inventor: PERRIN BERNARD
IPC: A24B15/12
Filed: 1960-05-20
Abstract: 935,212. Reconstituting tobacco. MOLINS MACHINE CO. Ltd. May 19, 1961 [May 20, 1960], No. 17920/60. Class 130. Tobacco is reconstituted by pulping the fibrous portion in a solution of the soluble constituents of tobacco and concentrating the insoluble portion of the pulpy product so that the final dried product has substantially the same constituent composition as the original tobacco. Tobacco continuously fed by a worm 4 into a tank 1 (Fig. 1) is both broken up into individual fibres and mixed with solution and fresh liquid (e.g. water) fed from pipes 6 and 7 respectively, by the high speed propeller shaped rotor 12. The mixture flows from the bottom of the tank 1 through a series of four papermaking type refiners 18, 19, 20 and 21 and the resulting pulpy product is fed through an output regulating valve 25 and through a control system into a concentrator 29. A continuous sheet S of the pulpy product, which is formed on the outside of a cylinder 56 in the concentrator 29 is carried on a felt band 58 over a load cell 59 and thence transferred to a dryer 60. In the control system (Fig. 2), the pulpy product is discharged into a compartment 31, any excess overflowing into a compartment 33 and passing thence to the concentrator 29. A solenoid operated butterfly valve 38 is momentarily opened and drops the contents of the compartment 31 into a glass or plastics compartment 41 in which electrodes 48, 49 and 50 are embedded. As the liquid drains through the sheet of solid matter that forms on a fine copper wire mesh flap valve 43, the time taken for the level to drop from the electrode 48 to the electrode 49 is measured and by means of an integrating controller 27 controls the degree of opening of the valve 25. A process controller 40, which operates the butterfly valve 38, also causes the flap valve 43 to swing downwards after the liquid has drained through, and momentarily opens a valve 53 allowing water to back wash the solid matter into the concentrator 29. The process repeats when the compartment 31 has refilled as defeated by the electrode 61. A continuous weight signal produced by the load cell 59 is transmitted to a controller 11 which splits it into two components, one of which adjusts the rate of feed of tobacco into the tank 1 and the other controls water feed valves 8 and 65. Solution extracted through the sheet S is emptied through trunnion ends 66 and pumped by a pump 63 via either valve 10 or 64 back to the mixing tank 1 or the concentrator 29 respectively. A centrifuge may be inserted in a line adjacent the pump to remove any fine precipitate that forms in the solution. Specified types of known means are used to prevent fermentation. A simplified apparatus for batch production is also described.
Patent GB-561039-A (GB)
Title: Improvements relating to miners' lamps
IPC: F21L23/00
Filed: 1942-12-17
Abstract: 561,039. Miners' lamps. STOCKWELL, W.B. Dec. 17, 1942, No. 17955. [Class 75 (iv)] In a miner's lamp having main air inlets at the top of the lamp, underfeed air passages consisting of openings 11 in the skirt 7 of the lamp bush 6 are regulated by a ring 12 having pin - and - slot connections 19, 20 with the skirt and formed with channels 18 parallel to the axis of the ring movable in and out of register with the openings 11. The underfeed air passes to the combustion space through a gauze ring 13 carried by a cylindrical body part 5 formed with a flange 16 entering a co-operating channel 17 in the top of the fuel vessel 1 as described in Specification 561,040. An igniter for the wick burner is mounted on the top of the fuel vessel.
Patent GB-1464959-A (GB)
Title: Bleaching compositions
IPC: C11D3/39
Filed: 1974-04-24
Abstract: 1464959 Bleaching detergent composition KAO SOAP CO Ltd 24 April 1974 [26 April 1973] 17693/74 Heading C5D [Also in Divisions D1 and C1] A stabilized bleaching composition comprises an inorganic percompound and a chelating agent capable of forming a water-insoluble or sparingly soluble chelate compound with copper and/or iron. The percompound may be selected from sodium perborate, percarbonate, peroxy pyrophosphate, peroxy silicate and peroxy tripolyphosphate. The chelating agent may be salicylaldoxime, benzoinoxime, or dimethylglyoxime. The composition may be formulated as a bleaching detergent with anionic, non-ionic or ampholytic surface active agent. In Example 2 sodium percarbonate is formulated with a salicylaldoxime chelating agent in a detergent composition comprising sodium alkylbenzene sulphonate, sodium tripolyphosphate, silicate, carbonate and sulphate, carboxymethyl cellulose and a fluorescent dye and perfume.
Patent GB-1186581-A (GB)
Title: Improved Exothermic Getters
IPC: H01J29/94
Filed: 1967-04-19
Abstract: 1,186,581. Gettering discharge apparatus. S.A.E.S. GETTERS S.p.A. 19 April, 1967 [28 April, 1966], No. 18036/67. Heading H1D. In an exothermic getter a body comprising a mass of compressed powder including an evaporable getter material capable of adsorbing gas is arranged in a holder to have at least 47% of the total surface of the body and 0À45 mm.<SP>2</SP> of total surface per mg. of powder exposed so that 90% of vapour of the getter material is evaporated within 5 to 12 seconds when the powder is heated to 700 to 1000 C. Powder 3 including Ba is arranged in a circular or annular steel container 2, the bottom of which may have circular, oval or elongated perforations. The surface of the powder may be indented to increase the surface area. An annular powder mass may be enclosed in Al foil and supported along its outer rim, the support may deflect vapour upwards or away from the surface on which the getter is mounted to prevent overheating. The support may include a member between the powder and the surface to act as a radiation screen. The getter may contain compounds which cause Ba vapour to condense in submicroscopic drops to increase its surface area. The getter may be mounted in a TV tube and subjected to H.F. induction heating.
Patent GB-104853-A (GB)
Title: Improved Manifold Recording Book.
Inventor: BERGENDAHL SVEN JOSEF FREDRIK
IPC: B41L1/24
Filed: 1916-12-18
Abstract: 104,853. Bergendahl, S. J. F. Dec. 18, 1916. Carbon papers, means for manipulating.-In a manifold book of the kind having folding sheets 2 and a carbon leaf 5 joined together at an edge 3, the carbon leaf is provided with elastic or stiffening- members 7 secured in a direction perpendicular to the attached edge 3, to insert the leaf automatically between the folds of the sheet 2. When the sheets 2 are folded in four sections, additional carbon leaves 6, 10 with elastic members 8, 13 may be provided, the leaf 10 being attached along an edge at right-angles to the direction of the folds in the sheet 2.
Patent GB-656682-A (GB)
Title: Improvements in or relating to cathode ray tubes
Inventor: BARASCH HANS PIUS
IPC: H01J29/86
Filed: 1948-07-07
Abstract: 656,682. Cathode-ray tubes. ENGLISH ELECTRIC VALVE CO., Ltd. July 7, 1948, No. 18299. [Class 39 (i)] The envelope of a cathode-ray tube comprises a rectangular face-plate F and a circular neck N, connected by a portion which is partly conical at the neck end C and partly rectangular in cross-section at the end B which joins the face-plate, the two parts merging into each other on hyperbolic curves J. In the preferred form, mild steel parts B, C are welded together along the curves J, or along longitudinal edges when the connecting portion consists of two like halves; alternatively, the portion comprising integral parts B, C may be produced by hydraulic pressing. The rectangular part may have convex sides. Steel sealing ribbons, secured in a step or groove in the glass plate F and in the part B respectively, are brazed together by silver copper alloy. Dimensions are specified.
Patent GB-258974-A (GB)
Title: A catalytic process for producing concentrated and fuming sulphuric acid
IPC: C01B17/765
Filed: 1925-07-17
Abstract: 258,974. Dicker, S. G. S., (Kudoh, K.). July 17, 1925. Sulphur trioxide, catalytic production of.-The catalytic oxidation of sulphur dioxide is conducted continuously in a closed circuit, a quantity of sulphur dioxide and oxygen equal to the amount combined and removed by absorption in sulphuric acid being added to the gases after each cycle before they are re-passed over the catalyst. The heat of the gases leaving the catalytic chamber is utilized in a heat exchanger to preheat the gases entering the catalytic chamber. Preferably pyrites cinders are employed as the catalyst and the ratio of sulphur dioxide to oxygen is varied according to the catalyst in order to produce a substantially constant quantity of sulphur trioxide. A diluent such as nitrogen may be used to moderate the reaction.
Patent GB-425470-A (GB)
Title: Card rack or stand
IPC: A47F7/14
Filed: 1934-06-28
Abstract: 425,470. Card racks. KEIR, R. A., 669, Queen's Drive, Old Swan, Liverpool. June 28, 1934, No. 18348/33. [Class 52 (v)] [See also Group XVIII] A rack for cigarette &c. cards or tokens comprises a rear card 2 with tongues 1 cut out and bent up therefrom, these tongues being passed through horizontal slots 3 cut in a front card 4 and the two cards then glued or stapled together so that the inclined tongues form pockets or receptacles. The front card 4 is embossed vertically at 7 to retain the cards &c. in their respective pockets. Advertisements are displayed at 5, 6.
Patent GB-914867-A (GB)
Title: Control device for machines
IPC: G05B19/02
Filed: 1961-05-19
Abstract: 914,867. Electric programme controls. MASCHINENFABRIK HEID A.G. May 19, 1961 [Aug. 25, 1960], No. 18389/61. Class 38 (6). [Also in Group XXII] A control device for a machine-tool comprises a pulse transmitter which controls a sequence switch, a distributer panel for automatic electric switching of pre-given adjustable programmes for a plurality of chronologically succeeding steps, the transmitter consisting of at least one marked ruler, and a pulse sensing device associated with each of the rulers, each of the sensing devices being connected to the sequence switch. Rulers T, T<SP>1</SP> having slides 1-3, 1<SP>1</SP>-3<SP>1</SP>, are scanned by pulse sensing devices I 1 - I 3 , I 1 <SP>1</SP>-I 3 <SP>1</SP>, respectively, which may consist of limit switches or mechanical snap switches actuated by notches K on the slides, or of electronic switches actuated by lines or magnetic marks. Each operation of the sensing devices energizes a relay R 1  or R<SP>1</SP> 1 , which actuates a counting magnet ZM, through R 1 s, R 2 o or R 1 <SP>1</SP>s, R 2 <SP>1</SP>o and S40 which closes in succession counting contacts ZM1/ 1 -ZM1/ n . The latter apply voltage to horizontal working bars A of a distribution panel and vertical bars F can be plugged in to bars A by rectifier plugs GL to connect switches S6-S9 which act on magnetic clutches, positioning motors, hydraulic control valves &c. of the machine. To isolate slides 1 or 1 1  and make slides 2 or 21 effective, vertical bar SP or SP<SP>1</SP> of the panel is plugged to energize contactor S2 or S2<SP>1</SP>. Break contact S 2 o or S 2 <SP>1</SP>o cuts out I 1  or I<SP>1</SP>, and contacts S2, or S2<SP>1</SP>s prepares I2 or I2<SP>1</SP> for operation. Vertical bars ESP and ESP<SP>1</SP> are for high-speed movements and when these bars are plugged in, contactors S1, S1<SP>1</SP> are energized. Break contacts S1<SP>0</SP> or S1<SP>1</SP>o interrupt the energization of I 1 , I 2  or I 1 <SP>1</SP>, I 2 <SP>1</SP>, and make contacts S1<SP>s</SP>, S1<SP>1</SP>s and prepare I3 or I3<SP>1</SP> so that only slide 3 or 3<SP>1</SP> can transmit. When marks on the slides are not to be used for operative pulses the corresponding bars L1-L3 are plugged to energize contactor S4 and contact S4<SP>0</SP> is open so that magnet ZM1 cannot step forward. Magnet ZM2 is operated by contact S4<SP>5</SP> of contactor S4 and the number of non-operative pulses is registered by magnet ZM2, from contacts ZM2/ 1 -ZM2/ 3 . As soon as contactor S3 is fed by plug GL, and closed contacts ZM2/ 1 -ZM2/ 3 , magnet ZM 1  is again ready for operation. Sensing devices I 1 -I 3 , I<SP>1</SP> 1 -I 3 <SP>1</SP> as well as acting on relays R 1 , R 1 <SP>1</SP> also act on a safety relay which applies voltage to a time limit switch which acts on a circuit-breaker relay, unless the counting magnet has utilized the pulse within a pre-set time, whereupon the functions of the machine are interrupted.
Patent GB-477952-A (GB)
Title: Improvements in or relating to sound film recording systems
IPC: G11B7/00
Filed: 1936-07-02
Abstract: 477,952. Optical sound recording apparatus. BRITISH OZAPHANE, Ltd., and WENDER, E. J. July 2, 1936, No. 18430. [Class 40 (ii)] [Also in Group XL] A so-called " noiseless " variable-area soundrecord is made by projecting upon a film a pair of light strips in the same straight line at right angles to the direction of movement of the film, the inner edges of the light strips extending parallel to the direction of motion of the film and being spaced apart so as to constitute two cutting or recording edges, said strips being moved similarly and simultaneously in opposite directions towards or away from one another in accordance with sound to be recorded and in accordance also with the mean strength or envelope of sound to be recorded. As shown in Fig. 1, light from a source 1 passes through an aperture 2 in a mask 3 and through a lens 4 to the mirror 5 of an oscillograph 7, and after this is split into two by a set of prisms 6 and thrown through a slit 12 in a plate 13 on to a film 11. The two beams of light are as shown at a<1> and a2, Fig. 3, when they strike the plate 13 having the slit 12. The oscillograph 7 is fed in a known way with sound control from amplifier 9 and envelope control from rectifieramplifier 10, themselves fed by a microphone 8. In a modification, Fig. 2, the oscillograph has two separate mirrors 5a, 5b working in opposite directions to produce the two beams of light which are thrown on the film by an optical device 14. Alternatively, two separate oscillographs may be used, and each made responsive to a predetermined frequency range only.
Patent GB-1464334-A (GB)
Title: Process for the production of citric and isocitric acids by a culture of a diploid candida lipolytica yeast
IPC: C12P7/48
Filed: 1975-05-02
Abstract: 1464334 Citric acid ENTREPRISE DE RECHERCHES ET D'ACTIVITES PETROLIERES and INSTITUT FRANCAIS DU PETROLE 2 May 1975 [15 May 1974] 18478/75 Heading C2C Citric and isocitric acids are prepared by fermentation using a culture of a diploid Candida lipolytica yeast in a nutrient medium containing sources of carbon, nitrogen, and mineral compounds, and also thiamin in a concentration in excess of 200 micrograms per litre. Conventional media components are present and the fermentation is preferably between 24 and 34 C. in the presence of air with agitation. Diploid Candida lipolytica preparation from the haploid form is described.
Patent GB-275585-A (GB)
Title: Process for the manufacture of synthetic liquid fuels
Filed: 1927-07-12
Abstract: 275,585. Soc. Internationale des ProcÚdÚs Prudhomme-Houdry (formerly Soc. Internationale des ProcÚdÚs Prudhomme). Aug. 3, 1926, [Convention date]. Hydrogenation, destructive.-Synthetic liquid fuels are obtained by passing the gaseous products obtained in the combustion of tars, heavy oil, &c. into contact with hydrogenizing agents, e.g. hydrogen, water gas &c. as described in Specification 274,846, [Class 55 (ii), Gas manufacture &c.], which have been atomized by passage through a metallic filter, the hydrogenation being thus effected in the absence of a catalyst. The apparatus comprises a. reaction chamber H to which the gaseous products are led through a pipe K. The hydrogen &c. is admitted through pipes J. j to atomizing chambers I filled with a metallic filter, e.g. powdered nickel or oxide of nickel agglomerated with pumice stone, and passes thence through a number of holes h into contact with the gaseous products.
Patent GB-952861-A (GB)
Title: Improvements relating to motor-vehicle transmission mechanisms with anti-skid means
Inventor: HILL CLAUDE
IPC: F16H48/30
Filed: 1959-05-30
Abstract: 952,861. Brakes; differential gears; oneway clutches. HARRY FERGUSON RESEARCH Ltd. May 25, 1960 [May 30, 1959], No. 18507/59. Headings F2C, F2D and F2F. [Also in Division B7] In a motor vehicle power transmission, the shafts 10, 10A are connected to rear and front wheels, respectively, through differential gears and a central differential gear 1 divides the drive to the shafts 10, 10A. A wheel 14 is driven from a variable speed gear through a chain 13 and drives the planet carrier 4 through a reversing gear 5. The planet carrier is connected to a tubular shaft 11 that surrounds the shaft 10. Associated with the shafts 10, 11 is a clutch assembly including a shaft 22 driven by pinions 20, 21 from shaft 10, and housings 30, 31 driven by shaft 11 through pairs of pinions 23, 24 and 25, 26 which have gear ratios slightly above and below the gear ratio of pinions 20, 21. Friction clutch plates 41 are arranged between the housings 30, 31 and the shaft 22 and each has a presser 32, 33 threaded on shaft 22 and connected to the associated housing by a drag clutch 57. The clutches are backed by pistons 40, 44, the interventing space 45 forming an hydraulic abutment supplied with pressure liquid through pipe 50 and non-return valve 54. If the speeds of shafts 10, 11 vary beyond predetermined limits, then one or other of the pressers 32, 33 engages the associated clutch 41 to lock the differential 1. When a clutch is engaged the pistons 40, 44 tend to reduce the space 45 and raise the pressure in the hydraulic abutment and this pressure rise would occur if a vehicle wheel locked on the application of brakes, and is employed to relieve the brake action. The brake pedal 70 actuates the master cylinder 73 and is also connected to a piston 75. The hydraulic abutment space 45 is connected by pipe 63 a spring-loaded piston 81 which upon increase in pressure actuates a valve 82 to apply pressure fluid to piston 75 to oppose the foot pressure on the pedal. Alternatively, the valve 82 could reduce the effect of a vacuum applied to piston 75. In another form, the valve 82 is replaced by a switch controlling an electromagnetic force acting on the pedal. The piston 81 is rendered inoperative during reversing by the provision of a valve 60 opened when reverse is engaged. Specification 878,700 is referred to.