baber/WOPTO huggingface dataset:
Patent GB-521361-A (GB)
Title: Improvements in and relating to electrical induction apparatus
IPC: H01F27/28
Filed: 1938-11-16
Abstract: 521,361. Transformers; inductances. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 16, 1938, No. 33351. Convention date, Nov. 18, 1937. [Class 38 (ii)] In a H.T. transformer or reactor the high voltage winding surrounding the core leg 10 is formed by two parts 15, 16 each composed of winding layers mounted on insulating cylinders 17. The H.T. lead is brought through a bushing insulator 27 to a member 18 situated between the winding parts, and from which a connection is taken to one of the adjacent layers. The winding parts are in series, and connections are taken between the layers of the winding parts such that, apart from the finishing layers, each layer of a winding part is in series between two. adjacent layers of the other winding part. The winding layers are graded in length to provide suitable insulation at the ends, and the primary winding, which is in two parts 13, 14 arranged on the inside and outside respectively of the secondary, is distributed appropriately. The member 18 is of insulating material covered with metal tape as indicated in Fig. 3 (not shown) to form an electrostatic shield at the high potential. Further shields 56, 57, at earth potential, are provided between the primary and secondary windings, and the spacing of the layers of the secondary winding is adjusted to give approximately uniform voltage distribution as a protection against surges. The secondary earthing connection is taken to a spring contact 42 to enable the circuit to be broken and a measuring instrument connected in circuit. The connections of the parts of the primary windings are taken to terminals 48, 49 52, 53 so that series or parallel connections may be effected. The H.T. lead-in is insulated by means of coaxial cylindrical and conical insulating elements 30, 35. Stepped supports 54 for the secondary winding are provided. Specification 173,606, [Class 38 (ii)], is referred to.
Patent GB-1537009-A (GB)
Title: Filtering and mixing apparatus
IPC: F02M37/00
Filed: 1977-08-09
Abstract: 1537009 Mixing apparatus CUMMINS ENGINE CO Inc 9 Aug 1977 [16 Aug 1976] 33357/77 Heading B1C Used lubricating oil from the sump 24 of an internal combustion engine 10 and fuel oil from a tank 20 are pumped by respective (gear) pumps 38, 40 driven by a common motor 34, mixed in a mixer 78 and returned to the tank 20; the oil line has a filter 62 and the mixer inlets comprise restricted pressure-reducing apertures. As described the mixer comprises a chamber 98, Fig. 2, having a tangential fuel oil inlet 114 and a lubricating oil inlet comprising an axial tube 102 with a blind end 104 and radial outlet apertures 106.
Patent GB-361582-A (GB)
Title: An improved method of taking dental impressions
IPC: A61C9/00
Filed: 1930-11-06
Abstract: In the manufacture of dentures a preliminary impression of the patient's gums is taken by means of a biscuit of softened wax or stearin on a dental impression tray.  This impression is then coated with a thin layer of soft gypsum mixture and again pressed on the gums to obtain a final accurate impression.
Patent GB-497815-A (GB)
Title: Improvements in daylight-packages for unperforated roll film for photographic apparatus
IPC: G03B17/30
Filed: 1937-12-02
Abstract: 497,815. Photographic roll - film holders. VALSTS ELEKTROTECHNISKA FABRIKA. Dec. 2, 1937, No. 33399. Convention date, Dec. 23, 1936. [Class 98 (i)] A package for unperforated roll-film comprises two cases 1, 2 which are bridged by an intermediate piece 3, the part between the cases being in the form of a plate in a plane at rightangles to the axes of the film rolls. A hub 4 with coupling teeth 6 is provided in the take-up case 2 and carries the exposed film 8. The intermediate piece 3 has cup-like parts 1<1>, 21 which engage round the cases 1, 2 and space them by the distance of one picture. The film extending between the cases is unperforated and free on both sides.
Patent GB-779694-A (GB)
Title: Method of construction of lifeboats
Inventor: KROGER WALTER
IPC: B63C9/02
Filed: 1955-11-22
Abstract: 779,694. Ships' lifeboats. VEB WARNOWWERFT WARNEMUNDE. Nov. 22, 1955 No. 33407/55. Class 113. A lifeboat comprises longitudinal hollow members of which one member 2 has a part that overlaps the adjacent member 1 and a hollow keel carrying member 3 connected with the adjacent hollow members 2 by plates 6. The hollow members form buoyancy tanks, are subdivided by transverse bulkheads into watertight compartments, are large enough to obviate the necessity for transverse bracings in the boat, and provide longitudinal benches. The stem and stern posts 4, 5 are also hollow.
Patent GB-825077-A (GB)
Title: Electric circuits incorporating magnetic materials having a rectangular hysteresis loop
IPC: H03K3/45
Filed: 1956-11-02
Abstract: 825,077. Non-contact making relays; ferroresonant circuits. STANDARD TELEPHONES & CABLES Ltd. (Laboratoire Centrale de Telecommunications S.A.). Nov. 2, 1956, No. 33496/56. Class 40 (9). Pauses between trains of pulses are detected by a saturable core with two windings, one of which is connected to a source of D.C. during pulses and is such as to always ensure the core being saturated in one direction, the other winding being connected to the source of D.C. during the space between pulses and being such as to switch the core from saturation to saturation in the time which separates pulse trains but not in the time separating pulses of a train. As shown in Fig. 4, switch 17 responds to pulses to connect up winding 11 and set the core to its saturated datum. With the trailing edge of a pulse 17 falls back to connect up winding 12 which in the time between pulse trains succeeds in reversing the core to a low impedance saturated state and thereby provides a high current pulse to operate a detector 6. In Fig. 7 a ferro-resonant flip-flop circuit is used to constitute the switch 17. A source 35 of 15 kilocycles energizes the windings 40 and 50 of a bistable pair one or the other of which will have a high current condition which over rectifiers 44, 54, will energize winding 46 or 56 of a core 59. Break pulses, such as dialling pulses in a telephone system, are applied to terminals 32, 33, and the leading edge of a pulse is rectified over 53 to put winding 50 into a high current condition and, within the duration of the pulse, drive core 59 to saturation one way. The trailing edge of a pulse is rectified at 43 to put winding 40 into a high current condition thereby driving core 59 the other way during the spaces between pulses. Should the space be long enough, as during the space between pulse trains, core 59 is completely reversed and the consequent high current pulse energizes transformer 39 to signal the event. Since the windings 40 and 50 of the bi-stable pair will produce some small output even in their low current conditions a bias of 2 volts is employed to block the rectifiers 44 and 54.
Patent GB-1273205-A (GB)
Title: Artificial mineral fibres
Inventor: MARCILLAC ANDRE CHARLES JEAN M
IPC: C03B37/06
Filed: 1969-07-03
Abstract: 1,273,205. Fibres of inorganic oxidic material. CIMENTS LAFARGE. 3 July, 1969 [2 Sept., 1968], No. 33573/69. Headings C1A and C1J. Fibres are obtained by fibrillating a molten oxide composition having wollastonite (calcium metasilicate) as its principal constituent and comprising the oxide analysis by weight 40- 60% SiO 2 , 0-15% Al 2 O 3 , more than 30% CaO 0-3% Fe 2 O 3 , 0-8% alkali metals, and the percentage of SiO 2  being greater than that of CaO. The fibres can be made by subjecting a stream of the molten oxide composition at at least 200‹ C. above its melting point, e.g. at 1500-1555‹ C. to the action of a jet of fluid, e.g. steam or air, impinging on the stream. -The jet of fluid can be directed at right angles to the stream of molten oxides and can impinge tangentially on the stream of oxides.
Patent GB-466862-A (GB)
Title: Improvements in or relating to sedimentation or other apparatus having rotary rakes or like members
IPC: B01D21/18
Filed: 1935-12-04
Abstract: 466,862. Gravity-separation apparatus; agitating-devices. DORR CO., Inc. Dec. 4, 1935, No. 33584. Convention date, Dec. 22, 1934. [Class 111] [Also in Group II] The invention relates to supporting means for a vertical shaft arranged in a sedimentation or other tank and carrying sludge scrapers or the like. The shaft 19 is supported by a spider 20 which rests on a ball race 21 on an annular bearing 23 supported by framework 24 from the walls of the tank 12. The bearing 23 has a flange 31 and a cover 33 so as to form an annular oil bath and the rotary structure is prevented from tilting on account of unbalanced load conditions by engagement of a bead 36 on the upper peripheral edge of the spider with the cover 33. The shaft 19 is keyed to the spider and can be adjusted vertically through the central bore of the spider bv means of a hand wheel 45 on a sleeve 43, carried by a fixed bracket and internally threaded to engage a threaded upright 42 fixed to the shaft. The rotary structure is driven from an electric motor on the frame 24 by means of a worm 26 engaging teeth 25 on the periphery of the spider in an enlargement of the oil bath. The shaft of the worm is arranged to move longitudinally against the pressure of a spring when the scraper encounters excessive resistance.
Patent GB-1396445-A (GB)
Title: Colour television
IPC: H04N9/64
Filed: 1973-07-13
Abstract: 1396445 Colour television MITSUBISHI DENKI KK 13 July 1973 [13 July 1972] 33591/73 Heading H4F A PAL colour television receiver includes a hue adjusting means 2 and ganged, manually operated, switches 4, 4<SP>1</SP>, the switches being operable either to exclude the hue adjusting means from the circuit or to include the hue adjusting means in the path of either the chrominance signal, as shown, or the reference oscillations to the domodulators 17, 18. The receiver also includes a switch 7 operated at the end of each line period and a one line period delay line 5. With switches 4, 4<SP>1</SP> in positions a the hue adjusting means 2 is included in the circuit and the output 9 of switch 7 is fed directly to demodulators 17, 18. With switches 4, 4<SP>1</SP> in positions b the hue adjusting means 2 is not included in the circuit and the demodulators 17, 18 receive the outputs of subtractor 13 and adder 11 respectively.
Patent GB-1534224-A (GB)
Title: Pressure vessels
IPC: F16J12/00
Filed: 1977-08-11
Abstract: 1534224 Pressure vessel SIEMPELKAMP GIESSEREI GmbH & CO 11 Aug 1977 [14 Aug 1976] 33685/77 Heading B1X [Also in Divisions Fl and G6] A pressure vessel comprises cast units 2 e.g. of iron or steel held together by steel ties 1 and a lining formed of segments 3 secured together e.g. by welding, a horizontal joint 4 between two adjacent cast units acting as a tearing position and the lining segment 6 overlying the tearing position being of reduced thickness so that in the event of failure of the passage vessel at the joint 4, the lining also breaks adjacent the joint 4. Segment 6 is welded at 7 to segments 3, the welds 7 serving also to weld the lining to attachments 11 secured to the cast units.
Patent GB-479550-A (GB)
Title: Improvements in and relating to reciprocating pumps
IPC: F04B49/08
Filed: 1936-12-08
Abstract: 479,550. Reciprocating pumps. KOTAKI, T. Dec. 8, 1936, No. 33724. [Class 102 (i)] [Also in Group XXIX] Relates to pumps of the type in which pairs of plungers 16, 17 have a common compression chamber and the separate driving mechanisms of the plungers are connected through a differential 7, which is rotatable in order to vary the out-of-phase relationship of the plungers in accordance with the discharge pressure. The invention consists in the employment of cams 14, 15 for driving the plungers and in causing the pressure-responsive device 25 to act directly on the differential 7. The driving gear comprises a driving shaft 1, which drives a shaft 2 through the differential 7. The cams 14, 15 which drive the plungers, may be mounted on the shafts 1, 2 or, as shown, on shafts 10, 11, which are driven from the shafts 1, 2 through gearing 8, 12, 9, 13. Each cam may drive a number of radial plungers, as shown, the compression chambers being interconnected by means of circular suction and discharge pipes 22, 23. The discharge pipe is connected by means of a pipe 24 to a cylinder 25, containing a piston 28, which is moved by the pressure against the action of a spring 27, adjustable by means of a screw 26. The piston 28 rotates the differential 7 by means of a rack 29 gearing with teeth 30 on the casing. The pipe 24 contains a disc valve with a central perforation providing a slow leak, thus delaying movement of the piston 28 on a fall of pressure. The pump discharge valve 41, Fig. 6, may be provided with heads having oblique grooves, so that the passage of the liquid rotates the valve. When the pump is employed for an hydraulic press it may be combined with a pump for giving a large delivery at low-pressure. High discharge pressure closes the valves of the low-pressure pump and opens a byepass.
Patent GB-1010554-A (GB)
Title: Production of pure concentrated sulfuric acid
Inventor: KLINGER WILLI
IPC: C01B17/90
Filed: 1962-09-04
Abstract: Pure concentrated H2SO4 is prepared by introducing gaseous SO2 and water into the lower and upper parts respectively of a column, the central portion of which contains packing, whereby a layer of boiling 97-98.3% H2SO4 is formed in the central portion; and removing part of the reaction heat by supplying excess water, allowing excess to vapourize, condense at the top of the column, and be returned to the boiling H2SO4.  The remaining reaction heat is removed by product H2SO4, which is passed through a de-aerator and cooler.  Temperatures of 320-333 DEG  C. can be maintained under normal pressure.  Up to 10% of an inert gas, e.g. air or N2, may be mixed with the SO3, and escapes at the top of the column with any SO2.  Parts of the column which come into contact with H2SO4 are made of, or lined with, quartz or noble metals.
Patent GB-1016593-A (GB)
Title: Device for measuring unbalance of a specimen
IPC: G01M1/30
Filed: 1962-09-05
Abstract: 1,016,593. Measuring rotary unbalance. W & T AVERY Ltd. Sept. 5, 1962 [Sept.14, 1961], No. 33960/62. Addition to 926,763. Heading G1N. In a device for determining the mass unbalance of a body, of the type described in the parent Specification, as improved upon or modified by Specification 1,016,594 the transducers 1, 2 (Fig. not shown) are mounted for rotation with the for rotation with the body relative to an evaluating and machining device, a multiphase rotary field, producer 3 being disposed between the transducers and the evaluating and machining device. The sine and cosine outputs of resolver 3 is applied through phase sensitive rectifiers 6, 7 to indicators 4 and 5. Device 5 controls a switch in series with a motor 8 rotating the body and transducers, while 4 controls the drilling machine 9. The body rotates until device 5 indicates zero output and the switch gears. The drill then operates until the indication on device 4 is zero, thus balancing the body. A wattmeter, Hall generator or Ferraris motor may replace devices 4 and 5.
Patent GB-1272586-A (GB)
Title: Improvements relating to devices having photo-electron emissive cathodes
Inventor: STANLEY VINCENT ARTHUR
IPC: H01J43/30
Filed: 1968-07-17
Abstract: 1,272,586. Photo-multipliers; cathode processing. EMI Ltd. 17 July, 1969 [17 July. 1968], No. 33964/68. Heading H1D. A control electrode 4 is disposed adjacent a photo-emissive cathode 2 so that the effective area of the cathode may be reduced, thereby reducing the dark current. Preferably, the electrode 4 is frusto-conical, as shown, so that when the cathode substrate is formed by evaporating antimony from a bead located at position 5, little antimony is deposited on the electrode 4 to contaminate it. An apertured electrode 6 may be provided to reduce the passage of unwanted thermal electrons from the control electrode 4 to the dynode 3.
Patent GB-1189507-A (GB)
Title: Deflector Yoke Construction
IPC: H01J29/82
Filed: 1967-07-24
Abstract: 1,189,507. Cathode-ray tubes. AMERLINE CORP. 24 July, 1967 [31 Oct., 1966], No. 33969/67. Heading H1D. The horn-shaped liner 17 of a deflection yoke assembly for a cathode-ray tube supports one or more detachable terminal boards 35. The liner is made up of two halves 23, 25 and carries a radially extending flange 30 at its smaller end. Terminal boards 35 are held in circumferential recesses 37 of the flange 30 by tabs 41, 42 which engage apertures 38, 39. The liner is made of polypropylene and is sufficiently flexible to allow disengagement of the tabs. The terminal boards carry circuit elements and are connected to a wiring harness 50 before attachment to the yoke assembly. The assembly is provided with an apertured conical cover 60 held in position by resilient tongues 65 on flange 30 which latch into slots 72 in the cover.
Patent GB-884769-A (GB)
Title: Improvements in or relating to fuel elements for nuclear reactors
Inventor: SIMPSON PHILIP ROSS
IPC: G21C3/36
Filed: 1958-10-24
Abstract: 884,769. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Oct. 20, 1959 [Oct. 24, 1958]. No. 34203/58. Class 39(4) A nuclear fuel element comprises a series of curved plates of fissile material secured at their edges to supports which are roughly perpendicular to the plates at the points of contact so as to form a series of spaced concentric tubes, the supports forming continuous heat conducting paths from the inner to the outer tube. Fig. 3 shows an A1 tube 14 carrying Y-shaped supports to which are welded Al plates 18 enclosing plates 10, of Al alloy containing 22.4% of enriched U clad in Al; these fuel plates are brazed. Fig. 4 shows an inner tube in four parts with radial supports 21; all parts are seam welded. The modes of manufacture of these two configurations may be interchanged. Another method of manufacture is to cast the Al tubes and supports on to the fuel plates. Fig. 6 shows a fuel element in a D 2 O cooled and moderated reactor. The inner tube encloses an experimental thimble 43 over which coolant flows. A thermocouple lead 32 and a coolant sampling tube 34 are provided. Shield plugs 36 and 52 close the access holes. Fuel elements of this type are also suitable for re-entrant cooling.
Patent GB-1494808-A (GB)
Title: Method and apparatus for removing sheets from a stack
IPC: G01N33/52
Filed: 1975-08-18
Abstract: 1494808 Separating sheets BOWE BOHLER & WEBER KG MASCHINENFABRIK 18 Aug 1975 [21 Aug 1974] 34280/75 Heading B8R Sheets are separated from a stack by urging the stack against a rigid, smooth, plane surface so that an endmost sheet is in facial contact therewith, abruptly moving the surface away from the stack, thereby taking the endmost sheet with it, and removing the sheet from the surface. As shown in plan in Fig. 1, a stack 1 of sheets on edge is urged by a back plate 5 resting on conveyer belts 6 against a separator plate 3 pivotable at 11 by a crank drive 13, 14. The belts 6 are driven through a yieldable friction coupling. When plate 3 is abruptly moved away taking an endmost sheet with it, levers 18, 19 cause suction to be applied to a suction roller 16 which projects through an aperture in the plate 3 when in this position. Thus the separated sheet is conveyed to endless belts 20, 21, and guides 22. An endless belt 10 prevents double feed. In alternative forms, sheets may be separated from the top or bottom of a stack, or sheets may be separated from one stack and envelopes from another in a stuffing operation.
Patent GB-807527-A (GB)
Title: Improvements in insulated coatings for magnetic sheet material
IPC: H01B3/08
Filed: 1955-11-30
Abstract: A composition for use in preventing magnetic sheet material from sticking during annealing comprises a water suspension of refractory oxides, the suspension containing colloidal silica obtained by an ion-exchange process and having a SiO2 to Na2O ratio of between 75 and 95 to 1 and at least one other refractory oxide, preferably magnesium oxide, whereby after drying the suspension and annealing the sheet a thin, tightly adherent, electrically insulating coating is formed on the sheet. The colloidal silica may have a size to provide for silica micelles containing about 33,000 silica nuclei. The suspension, which may contain instead of magnesia, lime, alumina, zirconia or calcined dolomite, is coated on to a plate, e.g. of silica steel, dried, and the plate annealed, which results in the desired coating.  The colloidal silica may be present in amount 1.5-6 per cent by weight of the total suspension and the refractory oxide in 2-7 per cent by weight of the total suspension.ALSO:A composition for use in preventing magnetic sheet material from sticking during annealing comprises a water suspension of refractory oxides, the suspension containing colloidal silica obtained by an ion exchange process and having a SiO2 to Na2O ratio of between 75 and 95 to 1 and at least one other refractory oxide, preferably magnesium oxide, whereby after drying the suspension and annealing the sheet, a thin, tightly adherent electrically insulating coating is formed on the sheet.  The colloidal silica may have a size to provide for silica nicelles containing about 33,000 silica nuclei.  The suspension which may contain, instead of magnesia, lime, alumina, zironia or calcined dolomite, is coated on to a plate, e.g., of silicon steel, dried and the plate annealed which results in the formation of the desired coating.  The colloidal silica may be present in amount 1.5 per cent by weight of the total suspension and the refractory oxide in 2-7 per cent. by weight of the total suspension.
Patent GB-1078294-A (GB)
Title: Improvements in devices for the measurement of weak magnetic fields by nuclear induction
IPC: G01R33/24
Filed: 1964-08-21
Abstract: 1,078,294. Semi-conductor circuits. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 21, 1964 [Sept. 4, 1963], No. 34322/64. Heading H3T. [Also in Division G1] In a magnetometer for measuring weak magnetic fields by nuclear induction (see Division G1), an astable multivibrator 22 triggers a first monostable multivibrator 3 to actuate a main relay 5 and also to actuate, via a delay circuit 16, an auxiliary relay 15. Multivibrator 22 then triggers a second monostable multivibrator 4 which renders transistor 65 conducting. Multivibrator 4 returns to its stable state before multivibrator 3 returns to its stable state. Fig. 6 shows a tunnel diode bi-stable circuit, four of which are used in each storing decade of a recording device.