baber/WOPTO huggingface dataset:
Patent GB-728613-A (GB)
Title: Improvements relating to radio frequency generating equipment
Inventor: TIBBS CHRISTOPHER EVEN MUNDELL
IPC: H05B6/04
Filed: 1952-12-04
Abstract: 728,613. Rectifying; automatic voltage control systems. RADIO HEATERS, Ltd. Dec. 1, 1953 [Dec. 4, 1952], No. 30820/52. Classes 38 (2) and 38 (4). [Also in Group XL (c)] The H.T. D.C. power supply unit for the valve oscillator of a radio-frequency heater (see Group XL (c)) produces an output voltage which rises as the current rises in accordance with the characteristic 5V - 31 = 42 (where V is in kilovolts and I is in amps.). The unit comprises a three-phase full-wave rectifier 20, 22 feeding the load 25 and associated with a saturable reactor 30 comprising a coil 27 producing a field representing the term- 31, a coil 31 producing a field representing the term 5V and a coil 33 carrying a current derived from a stabilized source 35, 40 and producing a field representing the term - 42 so that the A.C. output from coil 41 follows derived from a source 34 the required characteristic. This output is rectified at 42 and applied to a " peaking " transformer 43 and to five similar transformers (not shown), one for each rectifier valve 22. These transformers have a further winding 46 in series with the output current path and a winding 51 fed with A.C. The transformers produce output voltage pulses when the A.C. field crosses the zero axis. If, for example, the current drawn from the rectifiers increaess the field due to coil 44 changes such that the pulses occur earlier and as the pulses are applied to the grids of the corresponding rectifiers the H.T. output also rises. Winding 33 is fed from a stabilized source and the power supply is accordingly compensated for mains voltage fluctuations.
Patent GB-688832-A (GB)
Title: Improvements relating to holders for safety razor blades
IPC: B24D15/10
Filed: 1949-12-01
Abstract: 688,832. Holders for safety razor blades. HAMILTON, W. E. Nov. 27, 1950 [Dec. 1, 1949], No. 30826/49. Classes 60 and 61 (i). A holder for use when stropping a safety razor blade having a sheathed edge comprises a tubular rod 10 having at one end a longitudinal keyway into which the sheathed part of the blade is slidingly fitted. The outer end of the slot 11 has a V- shaped cut-away 14 to aid insertion of the blade and the inner end of the slit is extended for a short distance at right angles at 12 and 13. According to the Provisional Specification a sheathed edge razor blade so mounted in the holder may be used as a cutting instrument.
Patent GB-884768-A (GB)
Title: Improvements in or relating to centrifuges for the separation of liquid, or liquid/solid, mixtures
IPC: B04B1/10
Filed: 1958-09-26
Abstract: 884,768. Centrifugal separators. WESTFALIA SEPARATOR A.G. Sept. 26, 1958 [Sept. 27, 1957], No. 30833/58. Class 23. [Also in Group XXVI] The end of a stationary inlet or outlet conduit of a centrifugal separator is movable radially in all directions, and is sealed to the rotary bowl. As shown in Fig. 1 the stationary inlet conduit 8 for auxiliary liquid has an end-piece 13 resiliently mounted on the part 14 of the conduit by means of rubber rings 16, 17 and the end-piece is engaged by a seal 11 fixed to the part 22 of the rotary bowl. The auxiliary liquid is discharged into the separating chamber by pipes 10. Separated solids are discharged by pipes 5 and the separated liquids and auxiliary liquid are removed by a skimming device 7. Instead of resiliently mounting the end-piece it may be of resilient material and have a part having a low coefficient of friction engaged by the seal. In Fig. 3 the end-piece 13 of the stationary inlet conduit carries the seal 11 which engages the neck 23 of the rotary bowl.
Patent GB-892168-A (GB)
Title: Sealing chamber rings
Inventor: HARTNAGEL ROBERT
IPC: F04D29/10
Filed: 1960-09-08
Abstract: 892,168. Stuffing-boxes. KLEIN, SCHANZLIN & BECKER A.G. Sept. 8, 1960, No. 31000/60. Class 122 (5). A sealing chamber ring 3 for a soft-packing gland is provided with means, such as pins 6, having barb-like projections 8, extending outwardly of one end face of the ring for penetrating an adjacent coaxially-arranged packing ring 9d so as to establish therewith a connection whereby the ring 3 can be removed from the gland with the ring 9d. The pins 6 are screwed in the ring 3. The gland is shown mounted on the shaft 2 of a centrifugal pump, the pressure side of which communicates with cavities 4 in the ring 3 through a pipe line.
Patent GB-1465900-A (GB)
Title: Process for the manufacture of slabs of expanded polyurethane foam
IPC: B29C44/46
Filed: 1974-06-21
Abstract: 1465900 Continuous casting of polyurethane foam IMPERIAL CHEMICAL INDUSTRIES Ltd 21 June 1974 [29 June 1973] 31023/73 Heading B5A During the continuous casting of a foamed polyurethane web, dome formation on the upper surface of the web is prevented by suspending a length of flexible sheet material 8 above the surface of the rising foam 5 and allowing the foam to expand under the pressure exerted by the sheet, a foil 6 being fed in between the sheet and the foam surface to prevent adhesion of one to the other. The sheet 8 may be of rubber, rubberized fabric or plastics, but is preferably of metal link belting. If necessary, weights may be placed on the sheet material 8 to increase the pressure exerted on the foam.
Patent GB-1108404-A (GB)
Title: Switch for tap changers of transformers
IPC: H01H9/00
Filed: 1966-07-11
Abstract: 1,108,404. Snap-action switches. E. SCHEUBECK, [trading as MASCHINENFABRIK REINHAUSEN GEBR. SCHEUBECK KOMM.-GES.]. 11 July, 1966 [13 July, 1965], No. 31051/66, Heading HIN. A diverter switch for tap-changers of regulating transformers has an abruptly actuated rotary switch for each phase, constructed generally as described in Specification 1,029,336, but with the fixed main and auxiliary contacts 23- 26 secured by insulating plates 67, (68), in radial cut-out portions 64 of the upper and lower mounting discs 44, 45 (see also Figs. 1, 3, 4, not shown) which are held spaced and joined together to form a fixed carrier cage by bolts 62, the movable main and auxiliary contacts 27- 30 being formed as switch bridges. Screws (74), (75), may be slackened for inspection and replacement of the fixed contacts (Figs. 3, 4, not shown).
Patent GB-909451-A (GB)
Title: Proportional divider
IPC: G01D13/02
Filed: 1960-09-09
Abstract: 909,451. Electric selective signalling. CINCINNATI MILLING MACHINE CO. Sept. 9, 1960 [Sept. 14, 1959], No. 31110/60. Class 40 (1). [Also in Groups XXII and XXXVI] An automatic control system for a dividing head drilling machine comprises a tapped autotransformer 41 for dividing a linear function into a number of predetermined parts, the transformer having an A.C. reference voltage connected across a number of taps equal to (or a multiple of) the desired number of parts. Successive output signals from transformer 41, each corresponding to one part, are fed through a servo-amplifier 50, electro-hydraulic transducer 57 to a servomotor 25 which moves the table 19 until a feedback signal, to the amplifier 50 derived from a potentiometer 63, energized by the A.C. reference voltage and having its slider connected to the table, is equal to the input signal when the motor 25 stops, the amount of movement between each successive signal corresponding to one part. The particular embodiment shows an arrangement for drilling a number of equally spaced holes round a circle. The desired number is set up on selector switches 1SW, 2SW, 3SW (units, tens, hundreds) either manually or through a tape or card reader and transferred to stepping switches, wipers of banks 1SSd, 2SSc and 3SSb of which will now apply the reference voltage across the number of transformer taps corresponding to the desired number of holes. The transformer output is derived from the wiper of stepping switch banks 4SSa, 5SSb and 6SSb, the studs of which are connected to those of 1SSd, 2SSc, 3SSb, the wipers of which step and advance one step automatically each time a push-button is depressed and released. The push-button is automatically disabled on completion of the cycle by opening of contacts of a relay, and the circuit is reset by energizing a further relay to return the stepping switches 4SS, 5SS, 6SS to their home positions (Fig. 3a, not shown). An embodiment for drilling a number of equally-spaced holes in a row is described (Fig. 4, not shown).
Patent GB-312587-A (GB)
Abstract: 312,587. British Celanese, Ltd., and Green, S. J. Jan. 28, 1928. Grant of Patent opposed. Acetic and other aliphatic anhydrides are produced by passing the vapour of an acid such as acetic acid over a catalyst consisting of or containing non-crystalline carbon made by charring organic substances such as sugar. The carbon may be treated to remove impurities, for instance lamp-black may be treated to remove mineral oil prior to use as catalyst. Other known catalysts may be used in admixture with the carbon, such as tungstic acid or a tungstate (other than an alkali tungstate), sodium metaphosphate, or a phosphoric acid. Such additional catalyst may be admixed with the organic substance before the charring: thus a sugar solution containing dihydrogen sodium phosphate or microcosmic salt, or a mixture of sugar with sodium phosphate or dihydrogen sodium phosphate or microcosmic salt, may be charred. The apparatus may be a tube made of or lined with silica, copper, gold, graphite, or certain alloy steels, and the catalyst may be heated electrically. Reduced pressure may be employed, or the acid vapour may be diluted with an indifferent gas such as nitrogen or carbon dioxide. The anhydride may be separated in any suitable way, for instance the vapours may be mixed with the vapour of an entraining liquid such as benzene, carbon tetrachloride, petrol, mixtures of these substances, or mixtures of ether with petroleum ether, as described in Specification 303,772, the water vapour being carried away by the vapour of the entraining liquid while the anhydride condenses; or the vapours may be led under the surface of an extracting liquid such as benzene, chloroform, or mixtures of ether or chloroform with hydrocarbons such as light paraffins, gasoline, kerosene, or benzene and its homologues, as described in Specification 298,667; or the vapours may be made to impinge upon a stream of benzene, &c., as described in Specification 310,863; or the anhydride may be separated bv fractional condensation as described in Specification 256,663. When the process is effected under increased pressure, the pressure is preferably released before the separation of the anhydride. The initial material may be dilute or concentrated, for instance the waste acetic acid produced in the acetylation of cellulose may be employed. In one example, the vapour of glacial acetic acid is passed at 600-700‹ C. over sugar charcoal or charcoal produced from a mixture of sugar and microcosmic salt, and in another example a. mixture of sugar charcoal and calcium tungstate is employed.
Patent GB-916186-A (GB)
Title: An improved process for the industrial manufacture of hydroxocobalamin
IPC: G01N30/84
Filed: 1961-08-30
Abstract: Hydroxocobalamin is obtained by reducing cyanocobalamin in acid solution by means of nascent hydrogen produced by adding granular zinc and then blowing an oxidising gas through the resultant liquid after it has been diluted with water.  The grain size of the zinc may be from 200 to 1400 microns and the acid may be hydrochloric, hydrobromic, hydriodic or sulphuric acid.  Reaction is preferably effected at ambient temperature and at atmospheric pressure using air as the oxidising gas.  The zinc may be rendered insoluble by the addition of soda, potash, baryta or ammonia and the hydroxocobalamin crystallised from aqueous solution by the addition of tetrahydrofuran, dioxan or acetone.
Patent GB-1186373-A (GB)
Title: Improvements in or relating to Function Generators
Inventor: WALTERS LEONARD CHARLES
IPC: G06G7/28
Filed: 1966-07-12
Abstract: 1,186,373. Active filter. PLESSEY CO. Ltd. 7 July, 1967 [12 July, 1966], No. 31332/66. Heading H4R. In a filter to provide a desired output signal related in a desired manner to an input signal, the input signal is converted to digital form and applied to a shift register, the outputs from the various stages of the shift register being combined in appropriate proportions to provide the desired input output relation and the digital signal being converted back to analogue form either before or after being combined at the output taps of the shift register. The arrangement is equivalent to the known transversal equalizer using digital rather than analogue delay techniques. A specific application is providing the " Hilbert " transform to provide a form of single sideband signal compatible with standard A.M. receivers.
Patent GB-1197016-A (GB)
Title: Spark Gap Assembly
Inventor: CIUCIURA ALEKSY
IPC: H01T4/10
Filed: 1968-07-01
Abstract: 1,197,016. Spark gaps. MULLARD Ltd. 1 July, 1968, No. 31359/68. Heading H1X. A spark gap assembly comprises first and second electrical conductors 1, 3 spaced apart by an insulator 4 sandwiched between them so that an air spark gap whose length is determined by the thickness of the insulator is formed between said conductors, said sandwich being held together by a member or combination of members 5, 6 an electrically insulating part of which extends from one conductor to the other through an aperture in said insulator. In the form shown the member 5 is a bolt formed of a plastics material secured by a nut 6 which may be of insulating or conducting material. In an alternative embodiment (Fig. 2, not shown) the bolt is secured in a threaded aperture in conductor 3. In further alternative embodiments (Figs. 3 and 4, not shown) the member is a press-stud which engages a socket in conductor 3 or in a separate member. The insulator 4 may be a disc with a plurality of perforations or may be star-shaped. Conductor 1 is provided with a soldering tag 2. Conductor 3 may be the chassis, a printed conductor, or the framework of an aerial socket in a broadcast receiver.
Patent GB-730903-A (GB)
Title: Improvements relating to dry gas meters
Inventor: ALEXANDER ARTHUR
IPC: G01F3/22
Filed: 1952-12-11
Abstract: 730,903. Gas meters. PARKINSON & COWAN, Ltd. Dec. 9, 1953 [Dec. 11, 1952], No. 31407/52. Class 54. In a gas meter of the kind in which the meter casing is made in two portions 10, 12, Fig. 1, and in.which there is a partition 14 to support. part of the meter mechanism, the partition has a peripheral flange 16 to fit within and be embraced by the meter casing, a resilient ring 22 is located between the flange and the casing to form a gas-tight seal, and abutment means is provided to locate the partition relatively to the casing. The abutment means may take the form of a single swage 18 the upper and lower surfaces of which are engaged by the portions 10, 12 or of a pair of swages (not shown) which are spaced apart vertically on the flange 16. In the latter case, the space between the swages may accommodate nuts on bolts passed through overlapping parts of the portions 10, 12 to secure them together. These portions, which are sealed to the flange 16 by resilient rings 22 mounted in inwardly projecting channels 20, may alternatively be connected by pairs of projecting lugs 24, 26, one pair of which is provided with a sealing cup 32 which also secures a frame 34 for the recording index. Fig. 4 shows a further alternative construction in which swages formed on the portions 10, 12 abut shoulders 13, 15 on the partition 14.
Patent GB-263133-A (GB)
Title: Improvements in or relating to protective schemes for electric circuits
IPC: H02H9/08
Filed: 1926-12-11
Abstract: 263,133. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Dec. 15, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Protective arrangements.-In order to divide circuits into sections so that an earth leakage on one section will not affect other sections, the phases of the system are at a number of points directly or indirectly magnetically interlinked so that, normally, there is a balance of magnetomotive forces, whereas when an earth fault occurs electromotive forces of approximately the same magnitude and direction will be induced in the phases. At each section point each line is taken round a common iron core, or each line is taken round a separate core and provided with a secondary, the secondaries being connected in star. The inductive wattless energy of the magnetic interlinkage arrangement may be used, in the event of an earth fault, for complete or partial compensation of the capacitative wattlessenergy of the earthed circuit section. The voltage between phase and phase can be regulated by superimposing subsidiary voltages through the interlinking arrangement. The arrangement affords improved earth-leakage overload selective protection.
Patent GB-281295-A (GB)
Title: Improvements in or relating to steam superheaters and other tubulous apparatus containing high temperature fluid
IPC: F22G3/00
Filed: 1927-11-23
Abstract: 281,295. British, Thomson-Houston Co., Ltd., (Assignees of Smith, A. R.). Nov. 24, 1926, [Convention date]. Superheating tubes with external ribs and coverings.-A pipe through which flows highly heated steam or other fluid is strengthened by surrounding it with helically-wound pipes through which flows fluid of a lower temperature. A steam superheater element consists of a central pipe 9 and surrounding helically-wound pipes 10 spaced from the central pipe by a helical steel ribbon 11. The ribbon is wound in the opposite direction to the pipes and is secured to them and to the central pipe by brazing or welding. Steam flows from the inlet header 12 through the helical pipes to the outer end of the element and returns through the central pipe to the outlet header 14. The helical ribbon may be replaced by cast rings-
Patent GB-993129-A (GB)
Title: Conveyor system
IPC: B61C15/10
Filed: 1961-09-01
Abstract: 993,129. Shoe - drum brakes. SOC. D'ETUDES ET D'EXPLOITATION POUR LE TRANSPORT CONTINU PAR CANALISATION MOBILE. Sept. 1, 1961 [Sept. 2, 1960 (2); Dec. 20, 1960], No. 31508/61. Heading F2E. [Also in Division B7] Relates to a brake device for a self-propelled truck in an elevated railway conveyer system (see Division B7). Referring to Fig. 3, each truck has a driven wheel 30 having a peripheral V-groove engageable by a brake-shoe 34 pivoted to the truck at 35. The shoe is moved to the engaged position by the weight of a lever 37 pivoted at 38 to the truck against the action of a spring 36. The lever engages the shoe through a plate 44 soldered thereto by a readily fusible solder and by an adjusting screw 43 on the lever bearing on the plate 44. The latter is carried by the solder in a tubular structure 44a on the shoe and is spaced above the shoe. When the shoe is engaged with the wheel the free end of the lever 37 is spaced above an adjustable stop 62 on the truck. The lever is lifted, so that the spring 36 can free the shoe, by means of an electromagnet 41 which is energized when the driving motor 9 of the truck is energized. If the electromagnet of one selfpropelled truck should fail to operate when the conveyer is running the brake will be operated by the weight of the lever until such time that the solder melts and allows the plate 44 to fall in its tubular structure 44a whereafter the lever will engage the stop 62 but the screw 43 will no longer engage the shoe which will then be lifted by the spring 36.
Patent GB-793785-A (GB)
Title: Improvements in or relating to means for mounting electrical components
Inventor: BILLIN JAMES JOHN
IPC: H05K3/36
Filed: 1954-11-02
Abstract: 793,785. Electrical-component assemblies. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Oct. 28, 1955 [Nov. 2, I954], No. 31588/54. Class 37. A chassis structure for supporting a plurality of electric components having leads 16, 17, comprises two parallel plates 1, 2, one of the plates having a number of small apertures 3, 4 therein through each of which passes one of the leads 17 and the other plate having at least one larger aperture 5 with which are associated passages leading to smaller apertures 6 so that a component may be mounted between the plates by inserting it through an aperture 5 with its lead 17 through one of the holes 3 or 4 and then moving its other lead into position within one of the holes 6. In the arrangement illustrated the plates 1, 2 are made of an insulating material and have printed circuits 10 formed thereon as described for example in Specification 602,492, the holes 3, 4 and 6 being surrounded by enlarged terminal portions of the circuit 10 to which the leads 16, 17 may be soldered. Alternatively the plates 1, 2 may be made of metal in which case certain ones at least of the apertures will have to be insulated. The plates 1, 2 may be held apart by metal plates which serve as screening members and fit into slots in the surfaces of the insulating plates. Fig. 5 shows an arrangement in which a metal tube is arranged between the plates 1, 2; this may be used to house a valve. Fig. 6 shows an arrangement comprising insulating supporting plates 43 carrying the stator portions 47 of a rotary switch actuated by a shaft 46.
Patent GB-388493-A (GB)
Title: Improvements in or relating to steering gear for mechanically propelled vehicles
IPC: B62D3/06
Filed: 1931-11-14
Abstract: 388,493. Motor-vehicle steering- gear. MARLES STEERING CO., Ltd., Winchester House, Old Broad Street, London, and WELLER, S. B., 23, Cutenhoe Road, Luton. Nov. 14, 1931, No. 31597. [Class 79 (v).] Comprises resilient means tending to return the steering-gear to the " straightahead" position, in which the rate of increase in the loading of the resilient means is reduced as the gear moves away from the " straight-ahead " position. Thus the force exerted by the resilient means when the gear is furthest from its mid-position is less than if the loading increased at a steady rate. In the construction shown in Fig. 1 a sleeve 18 loose on the steering shaft 13 is connected thereto by a coil spring 23 secured at its ends to the sleeve and the shaft, and is formed with a helical thread 21 of varying pitch engaged by a fixed pin 22 on the steering column 10. As the steering shaft is rotated the sleeve 18 is also rotated and is moved axially by the pin 22 so as to compress or extend the spring 23 and exert a returning force on the steering shaft. In the construction shown in Fig. 2 a helical spring 32 of varying pitch has its ends 33, 34 sliding in slots 35, 36 in the steering shaft 13 and its coils pass between two pins 38, 39 on the steering column 10. As the steering shaft rotates the coils of the spring pass between the pins 38, 39 and one end of the spring is compressed and exerts a returning force on the shaft, the other end of the spring sliding in its slot 35 or 36. The pins 22, Fig. 1, and 38, 39, Fig. 2, are preferably carried by collars 28, 37 adjustable angularly on the steering column so that the steering gear may be set out of centre to compensate for road camber.