baber/WOPTO huggingface dataset:
Patent GB-571909-A (GB)
Title: Improvements relating to the production of aviation or motor spirit
IPC: C10L1/06
Filed: 1940-12-23
Abstract: Aviation motor spirit of high octane number is prepared by the non-destructive hydrogenation of the polymerization products of a mixture of isobutene and normal butene to which has been added an amount of propene determined by the proportion of isobutene present, such that the amount of propene which is added for any given content of isobutene is in the range of 60 per cent to 130 per cent by weight on the isobutene content.  The temperature of the polymerization is regulated to the rate of throughput to give a product of the desired octane number.  This temperature should be in the range 130-250 DEG C. and preferably in the range 150-190 DEG  C.  Catalysts mentioned for the polymerization reaction include copper phosphate, cadmium phosphate and phosphoric acid and are used in the manner described in Specification 535,062.  The hydrogenation is preferably carried out in the presence of a mixed catalyst composed of nickel and tungsten sulphides at 250 DEG  C. under 1000 lbs./sq. inch and throughput of 0.5 volumes polymer/volume catalyst/per hour.
Patent GB-981014-A (GB)
Title: Improvements in or relating to electromagnetically actuated timepieces
Inventor: HETZEL MAX
IPC: G04C3/10
Filed: 1963-05-07
Abstract: 981,014. Clocks and watches. BULOVA WATCH CO. Inc. May 7,1963, No. 18088/63. Heading G3T. [Also in Divisions H2 and H3] An electromagnetic transducer arrangement for an electromagnetically actuated timepiece  having a tuning-fork oscillator 10, comprises first and second transducers T 1 , T 2  for actuating the fork, each transducer including a magnetic element 21, 25 attached to a tine of the fork, a pick-up coil coacting with one of the magnetic elements, and a drive coil 22, 26 coacting with both of the magnetic elements, the pick-up coil being constituted by two serially connected portions 23a, 23b wound in opposing directions to minimize the effect of unwanted coupling between the drive and pick-up coils. The pick-up coil is associated with the cup shaped magnetic element 21 carried by the tine 15, the coils being wound on a stationary carrier 24 whereon the inner, pick-up coil portions 23a, 23b are separated axially by a ridge 24a and surrounded by the outer, drive coil portion 22. The other part 26 of the drive coil coacts with a similar magnetic element on the other tine 16 which drives the watch train 12 through a pawl and ratchet 13,14. Transistor 28 may be of Germanium junction P-N-P type, the base being connected through a biasing R-C network 30, 31 to one end of the pick-up coil 23a, 23b the other end of which is connected through drive coils 22, 26 to the collector C,the emitter being connected through battery 29 to the junction of the pick-up and drive coils. This circuit operates in known manner to maintain the tuning fork. The voltages induced in the sensing coil portions 23a, 23b owing to coupling with the drive coil 22 will be of equal amplitude and in phase opposition and will tend to cancel out. On the other hand the voltages induced in portions 23a, 23b by movement of the magnetic element are not of equal amplitude, since the flux density in the air gap region 21c in which portion 23b lies is greater than that for portion 23a. This produces a resultant output voltage sufficient to control the transistor. In an alternative circuit, Fig. 5, a silicon high beta transistor 32 of grounded collector type is used. In order that the embodiment utilizing this circuit may be constituted as a stop watch, two silicon diodes 33, 34 are interposed in series as shown between the -v of battery 29 and drive coil 26, these diodes being shunted by an on-off switch 35. In stop position, switch 35 being open, the voltage applied to the transistor is reduced such that the amplitude of the tuning fork is insufficient to drive the ratchet wheel 14, and on closing switch 35 normal running of the watch is resumed. Specifications 840,086 and 854,196 are referred to.
Patent GB-1347649-A (GB)
Title: Carriage-way expansion joint filler
IPC: E01D19/06
Filed: 1972-04-19
Abstract: 1347649 Expansion joints RHEINSTAHL AG 19 April 1972 [19 May 1971] 18101/72 Heading E1B The elastomeric web 5 having thickened or flanged edges 12 of an expansion joint is held in elongated edge support members 3 having a pair of flanges 6a, 6b, by clamping strips 13 which bear on the thickened portion 12 and are held in place by dowel pins 15. Modified thickened edges 12 and clamping strips 13 are disclosed. The flange 6b is shorter than the flange 6a by an amount 34 at least equal to the thickness of the web 5, which is grooved at 11 so that it folds down when the joint contracts and so that the maximum contraction can occur without damaging the web.
Patent GB-596032-A (GB)
Title: Retread vulcanizing device
IPC: B29D30/54
Filed: 1945-07-16
Abstract: 596,032. Retreading tyres. GENERAL TIRE & RUBBER CO. July 16, 1945, No. 18122. Convention date, Jan. 24. [Class 87 (ii)] The mould 22 is disposed between eight members 10 which are disposed at 90 intervals around the tyre and are vertically adjustable on pillars 7 having horizontal limbs 6 radially adjustable in sleeves 4 rigidly fixed to a column 2. The sides of the tyre tread portion are gripped by eight blocks 19 urged towards each other by turning screws 18. The core bag 36 is so constructed that it is expansible radially but not laterally, i.e., it is formed of rubber reinforced by cords 37 extending around the core at right angles to the external circumference thereof. The base of the core bag abuts against a cylinder 34 having a bottom 33 which rests on top of the column 2 and is positioned by a pin 32. The core fluid supply stem 38 passes through a slot 39 in the cylinder 34, the upper part of the slot being closed by a sliding plate 40. The mould is a hollow sheet metal ring having inwardly projecting ribs 24 and spaced pressed-in portions 26 which stiffen it. Rivets 27 further stiffen the mould, and vents 30 in certain rivets permit escape of gases from the tread material being vulcanized. Steam is circulated through the mould. The apparatus can be readily adjusted to receive tyres and moulds of various sizes.
Patent GB-315554-A (GB)
Title: Improvements in the manufacture and production of vulcanised rubber
IPC: C08J3/22
Filed: 1928-06-22
Abstract: 315,554. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). June 22, 1928. Vulcanizing.-A vulcanizing-composition to be added to natural or artificial rubber consists of a paste obtained by triturating a powdered compound of sulphur and selenium, with an oily or fatty product compatible with rubber such as solid or oily petroleum jelly, stearic acid, oleic acid, wool fat &c. The selenium compounds, which may also contain free sulphur or selenium or both, may be prepared by fusing the elements together in molecular proportions. In an example, a rubber mixture containing sulphur is mixed with a paste prepared by triturating a selenium sulphur compound, obtained by fusing 29 parts of sulphur with 71 parts of selenium, with an equal amount of oleic acid.
Patent GB-829173-A (GB)
Title: Improvements in or relating to truing devices for thread-grinding discs
IPC: B24B53/065
Filed: 1958-06-06
Abstract: 829,173. Trueing grinding wheels. LINDNER G m.b.H. June 6, 1958 [Sept. 14, 1957], No. 18234/58. Class 60. A device for simultaneously trueing the two flanks 2, 3 of a wheel 1 for grinding threads comprises a movement control plate 12 which rocks two levers 8, 9 about axes 22, 23 situated in a plane and adjustable obliquely to the grinding wheel, the levers having arms 6, 7 of unequal length on which diamonds 4, 5 are mounted. The plate 12 is secured to a rod 15 vertically movable against a spring 17 by gearing 18, 19 operated by a motor or manually by means of a handle 21 to rock the levers 8, 9, which have spherical projections or rotatable balls 10, 11 urged by springs 14 into contact with the plate 12, about the axes 22, 23. In the lower position of the rod, the diamonds are retracted from the wheel and are then moved in unison across the flanks of the wheel as the rod is raised, the unequal length of the arms 6, 7 preventing interaction between the diamonds. The axes 22, 23 of the levers are in bearings 25, 26 which are adjustable in an arcuate guide 24 so as to position the axes perpendicular to the flanks of the wheel. The axes may be axially adjusted in the bearings by means of knobs 27, 28.
Patent GB-1387796-A (GB)
Title: Adsorption process
IPC: C01B31/12
Filed: 1973-04-16
Abstract: 1387796 Removal of cos from gas streams CALGON CORP 16 April 1973 [24 April 1972] 18262/73 Heading ClA Carbonyl sulphide is removed from a gas stream containing CO 2  by passage through a bed of activated carbon impregnated with from 1 to 50 wt. per cent of anhydrous monoethanolamine. The absorption bed may be operated at normal operating pressures and may be regenerated by exposure to monoethanolamine. If desired the bed may be steam stripped or purged with hot nitrogen prior to re-impregnation with monoethanolamine. The process may be carried out cyclically.
Patent GB-1381997-A (GB)
Title: Pressure failure switch
IPC: H01H35/38
Filed: 1973-04-16
Abstract: 1381997 Brake-circuit pressure-failure indicators DBA SA 16 April 1973 [24 May 1972] 18272/73 Heading F2E [Also in Division H1] A differential pressure switch for use in a dual brake circuit comprises a double-acting piston and cylinder assembly 16, 18, Fig. 1, separating cavities 26, 28, the housing comprising two relatively pivotal parts 10, 12 having mounting lugs 36, 38 with fluid bores 56, 62, whereby the assembly may be mounted on fluid connection bosses 44, 46 which may be out of angular alignment. The parts 10, 12 are slidingly connected by a plug and socket connector 14, 20 with a fluid seal 15 whereby the lugs 36, 38 may also be aligned lengthwise with the fluid connection bosses 44, 46. The pistons 18 are urged towards the central neutral position, shown; by opposed compression coil springs 22, 24, but in the event of a sufficient pressure difference one of the pistons 18 engages an insulated conductor 34 at shoulder 33 to close a warning circuit. Screws 40, 42 for clamping the lugs 36, 38 have bores 52, 54 co-operating with bores 56, 62 in the lugs for the passage of pressure fluid. In the example shown, applied to a differential pressure warning system for a dual brake pressure cylinder 48, the body part 10 has bosses 64, 66 for fluid connection to the two brake systems.
Patent GB-136526-A (GB)
Title: Improvements in or relating to semi-Diesel Engines.
IPC: F01L13/00
Filed: 1919-07-23
Abstract: 136,526. Soc. Marseillaise de Construction MÚcaniques. Dec. 10, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Starting; reversing.-In semi-Diesel engines, three cams 1, 2, 3 slide axially upon a shaft 4 passing through a compressed-air reservoir, and control the escape of air through the valve 8 to the cylinder for starting in both directions, and through the valve 7 for injecting the fuel from the nozzle 16 at normal loads.
Patent GB-471697-A (GB)
Title: Coin-freed apparatus for issuing stamped receipts for the money inserted
IPC: G07F17/26
Filed: 1936-07-03
Abstract: 471,697. Coin-freed stamping-apparatus. SKIRROW, R. July 3, 1936, No. 18458. [Class 27] An apparatus for stamping cards as a receipt for the money inserted and for presenting means to be marked by the operator to keep a record of each user, comprises a main shaft 18, Figs. 1 and 2, which is turned through one revolution, after the insertion of two coins, by a handle 21, backward rotation being prevented by a pawl and ratchet 39, 38. A cam or eccentric 22 on the shaft engages a roller 23 on a frame 24 to move an inking pad 25 into engagement with a stamp 26. After inking, the pad is turned on its pivots 27 away from the stamp by a second cam 28 engaging a roller 29 on the pad. The stamp depends from an arm 33 of a rack 32 which is engaged and moved downwards, against the action of a return weight 34 connected thereto by a cord 35 passing over pulleys 36, by a toothed sector 31 on the shaft. The card to be stamped, which is pushed into a slot in the casing of the apparatus, is held in position by a needle 37 projecting from the face of the stamp. At each actuation of the apparatus, a rod 42 on the shaft 18 engages pins 43 projecting from a spool 41 to wind a strip of paper on to that spool from another, so that a blank piece is presented at a window for the next user to mark with his name &c. before operating the handle 21. Coin action, mechanical - connection and multiple-coin.-Two coins 2 are inserted in a shoot 3 to pockets 4, 5, Fig. 3, where they rest on projections 6 on two counterweighted levers 8, 9 pivoted at 15. The levers have inward projections 16 which, in the absence of coins, obstruct a stop bar 19 on a lever 17 carried by the shaft 18. Pins 20, however, on the other end of the lever 17 engage the tops of the coins and depress them to rock the levers 8, 9 and move the projections 16 out of the way. Coin-slit closing-devices ; returning coin.- The coins resting on the projections 6 engage pivoted members 10 to move their top inclined ends through slots 14 into the shoot 3. These inclined ends deflect other coins, that may be inserted, along a shoot 11 leading to a return shoot 13. When the first coin is inserted the corresponding member 10 deflects the second coin into its pocket 5.
Patent GB-188634-A (GB)
Title: Methods and processes for the leaching of caliche and for the recovery of nitrate therefrom
IPC: C01D9/02
Filed: 1922-07-05
Abstract: In the extraction of sodium nitrate from caliche the reduction of yield consequent on the formation of the double salt sodium nitrate-sodium sulphate is avoided by maintaining the presence of reagents having a greater affinity for sodium sulphate than has sodium nitrate, the leaching being effected at or below 58 DEG  C. and the cooling being effected by refrigeration.  The reagents mentioned are potassium, magnesium, and calcium compounds, particularly magnesium sulphate, calcium sulphate, syngenite (calcium potassium sulphate) and astrakanite (magnesium sodium sulphate). Sometimes caliche contains glauberite (calcium sodium sulphate) or other impurities having similar effect, and in that case caliches not containing such compounds may be mixed with a caliche containing such compounds.  In any case, the leaching is so conducted that these advantageous compounds, whether originally present or added, are not removed during the process. One effect of this process is that the sodium sulphate remains behind with the slimes, rendering the slimes readily filterable. Cooling to separate the nitrate is carried to 7 DEG  C. or such lower temperature, occasioned by the impurities present, as may be possible without causing crystallization of sodium sulphate. Substances which are stated to allow of such lower temperatures are particularly potassium and magnesium salts, iodates and borates.  Specification 2233/86 is referred to.
Patent GB-1007456-A (GB)
Title: Discharge simulator
Inventor: MOLE GEORGE
IPC: G01R31/12
Filed: 1962-05-14
Abstract: 1,007,456. Calibrating insulation testing equipment. ELECTRICAL RESEARCH ASSOCIATION. May 7, 1963 [May 14,1962], No.18464/62. Heading G1U. A discharge simulator suitable for calibrating insulation testing equipment has a pair of terminals 21, 22 which are connected across the insulation under test and consists of a pair of series connected capacitors C1, C2 in parallel with the winding 27 of an electromagnetic relay, the relay having contacts 25, 26 which are arranged to short circuit the capacitor C2 when the relay is operated. A capacitor C3 is connected across the relay winding, so that when an alternating test voltage is applied across the terminals 21, 22 the capacitors C1, C2 are charged before the relay operates, the current in the winding 27 being phase delayed. When the relay operates the capacitor C2 is discharged, simulating a partial discharge of insulation fault, which is observed by the test equipment. C2 may be any of a series of known capacitors, and the magnitude of the partial discharge may be calculated from the known values of C1 and C2 and the applied voltage (measured on voltmeter 29). This calculated magnitude may be compared with that measured by the test equipment so as to calibrate its performance.
Patent GB-1024925-A (GB)
Title: A mass filter
IPC: H01J49/42
Filed: 1964-05-04
Abstract: 1,024,925. Mass spectrometers. SIEMENSSCHUCKERTWERKE A.G. May 4, 1964 [May 2, 1963], No. 18508/64. Heading H1D. In a high - frequency quadrupole mass filter of the type described in Specification 773,689 in which the ions are caused to travel in stable or unstable paths in dependence upon their masses by means of a high-frequency electric field, the potential of which is a quadratic function of the X and Y co-ordinates, the space between the quadrupole rods 31 to 34 is subdivided by a crossed-plate electrode 37, 38 to form a plurality of " monopole " arrangements, the ion beam 39 passing centrally of the system to a common collector. For analysing two or more different gases simultaneously the rods 31 to 34 may be of different diameters and differently spaced from the central axis, a plurality of separate collectors being provided. Further, different voltages may be applied to the separate monopole arrangements and an arbitrary number, e.g. eight, monopole arrangements may be formed. The angle electrodes 37, 38 may be of mesh form.
Patent GB-296753-A (GB)
Title: Improvements in the method of working with hydrocarbons at high temperatures
IPC: C10G1/06
Filed: 1927-03-03
Abstract: 296,753. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). March 3, 1927. Divided on 296,683. Hydrocarbons.-The hot parts of apparatus in which hydrocarbons are treated at high temperatures are composed of or lined with molybdenum, tantalum or chromium to prevent deposition of carbon. If catalysts are used they should also be substances which do not encourage carbon deposition, e.g. silica, pumice, barium carbonate, charcoal treated with barium salts, boron, tungsten, &c. with or without a coating of lustrous carbon. The invention is applicable to distilling, extracting, dehydrogenating, and other processes, involving heat treatment of hydrocarbons, excepting cracking and hydrogenating, which are excluded.
Patent GB-240268-A (GB)
Title: Improvements in and relating to collapsible and convertible cots, ottomans and the like
IPC: A47D11/00
Filed: 1924-08-05
Abstract: 240,268. Gear, F. C. Aug. 5, 1924. Bedsteads convertible into couches; collapsable bedsteads; cradles; collapsable seats.-A collapsable cot, which may also be convertible into a collapsable ottoman, comprises longitudinal frame members 4 having legs 5 pivoted at the ends and adapted to be turned to lie against the members 4, detachable end bars 13, and an open-topped receptacle 15, secured at its edges to the members 4 and 13. Fig. 2 shows a method of connecting together the members 4, 5 and 13, and the detachable connection of the reversible rockers 20. An upholstered frame 23 may form the bottom of the bed, or may, alternatively, be supported on the bars 4, 13 by means of hinged lugs 26, to convert the cot into an ottoman.
Patent GB-630490-A (GB)
Title: Improvements relating to light sensitive apparatus
IPC: G08B17/107
Filed: 1946-06-20
Abstract: 630,490. Photo-electric smoke detection. McIVER, P. E. June 20, 1946, No. 18603. Convention date, July 16, 1945. [Class 40 (iii)] To compensate for undesired variations in source brightness in apparatus in which a beam of light is modulated by the presence of smoke, two beams of light C and E from a common source A fall on one photocell D. The two beams are " chopped " at different frequencies by " choppers " F and F<1>. Beam C falls direct on the cell and is shielded from outside influences. Beam E is interfered with by the smoke and then reflected back. The output of the photo-cell due to these two differing frequencies is amplified at H and split into two frequencies in filters I and I<1> and applied to indicating devices J, J<1>.
Patent GB-801675-A (GB)
Title: Improvements in and relating to mineral-mining machines of the scraper box-type
Inventor: OWEN MALCOLM NOEL MAYES
IPC: E21C27/42
Filed: 1956-06-15
Abstract: 801,675. Mineral-mining apparatus. COAL INDUSTRY (PATENTS), Ltd. June 6, 1957 [June 15, 1956], No. 18617/56. Class 68(1) On the goaf-side of a structure 10 secured on top of a scraper box SB is a vertical plate 17 that directs mineral freed by wedge cutters 12 on the other side of the structure down into the scraper box. Plates 14, 18 brace the plate 17 and help to guide the mineral into the scraper box.
Patent GB-1487318-A (GB)
Title: Calendar ring driving wheel for timepieces
IPC: G04B19/253
Filed: 1976-05-06
Abstract: 1487318 Calendar timepieces ETA A G EBAUCHES-FABRIK 6 May 1976 [16 May 1975] 18630/76 Heading G3T A wheel 1 has a tooth 9 projecting from its rim 14 for advancing a calendar ring 11 of a timepiece, the rim being so connected to the wheel hub 17 that, during such advance, the wheel is rigid and the rim is concentric with the hub whereas, if the ring 11 is advanced by a correcting mechanism (not shown), the run can be displaced as a whole to an eccentric position as shown, allowing the teeth 23 of ring 11 to ride over the tooth 9. In the wheel shown, the rim and hub are connected by a resilient spoke 18 which is deflected during a correction in the illustrated position of the wheel. A stop 20 normally abuts the hub and helps to keep the wheel rigid as it advances the ring 11, an additional load being then imposed by a star 4 which is coupled to a day disc and driven by a lug 21 blanked in the wheel 1.
Patent GB-120736-A (GB)
Title: Magnesium Lamp for Photographic Use.
Inventor: HANSEN JENS PETER
IPC: F21K5/00
Filed: 1918-11-15
Abstract: 120,736. Hansen, J. P. Sept. 18, 1917, [Convention date]. M a g n e s i u m lamps. - A lamp for photographic purposes has a match-holder slidably or pivotally mounted on the base-plate, and so connected to an operating - handle &c. that, by the actuation of the handle or equivalent, the match is struck and moved so as to ignite the magnesium powder previously placed on the base-plate. The match-holder and handle &c. are made detachable, and a spring-controlled hinged back-plate can be folded down to confine the detached parts, so that the lamp may be carried in the pocket. As shown in Fig. 1, the base-plate 1 has an upturned back 2, and is stepped-up at 'the forward end 5, 6, a tongue 7 being stamped out of the part 5, to form a holder for the match-striking composition, which, adapted in the form shown at 18, Fig. 6, is inserted between the parts 5, 7. To the part 2 is hinged the back-plate 3 under control of the leafsprings 4. The match-holder 9, Figs. 1 and 2, which is of square section and can be moved through an aperture in the part 2, has a perforation 10 extending throughout its length, to facilitate cleaning, a clamping-screw 11 for the match, a cylindrical neck 12, and a head 13 flattened on opposite sides to facilitate the passage over it of the slotted or looped end of the handle arm 14. The other arm 15 of the spring handle is bent at 16 to pass through the loop of the arm 14, and is cranked and bent, as shown at 24, to engage with a hoop or socket 8 on the base-plate. In adapting the detached parts for use, the match-holder 9 is pushed back, a'striker 18, Fig. 6, is inserted between the parts 5, 7, a match 19 is inserted and clamped in the holder, and the loop of the handle 14, which is held horizontally for the purpose, is passed over the head 13 of the matchholder, after which the handle is turned into a vertical position, and the end of the handle arm engaged in the socket 8. -The magnesium powder is then sprinkled over the base-plate and matchholder, so as to be ignited by the match as it is withdrawn from the striker. To effect ignition, the arms 14, 15 are pressed together, to facilitate which they may be provided with finger-plates 17. In a modification, the spring handle is dispensed with, the match-holder being actuated by a Bowden-mechanism, which may be of any desired length. Both operative arrangements may be applied to the same lamp.