baber/WOPTO huggingface dataset:
Patent GB-254539-A (GB)
Title: Method of separating radium and barium salts
IPC: C01F13/00
Filed: 1925-07-31
Abstract: 254,539. Bashiloff, I. July 31, 1925. Radium and barium salts.-The fractional separation of radium and barium salts is effected by repeatedly adding a salt having the sameanion to the acid or neutral solution of the radium and barium salts so as to precipitate crystals having different activities; for instance, calcium or aluminium chloride is added to a solution of radium and barium chlorides. Suitable apparatus comprises a tank 8 for calcium chloride solution, vessels 1-7 for the radium-barium solution, a vessel 11 for the mother liquor from which samples are taken to determine the remaining radio-activity, an evaporator 12, cooler 13, and filter 14 for separating the barium chloride crystals, and a vessel 15 for the final motherliquor of calcium chloride which is used again. The vessels 1-7 are supplied with calcium chloride solution when necessary by the pipes 9, 10. Radium-barium chloride crystals are dissolved in the vessel 1 and calcium chloride solution is added in quantity sufficient to precipitate about a third of the material, which will have about double the original activity. The crystals are dissolved in the vessel 2 and treated with calcium chloride to precipitate a third of the quantity. This second precipitate will have four times the original activity. The mother-liquor from the vessel 1 is placed in the vessel 5 and calcium chloride is added to precipitate a third of the remaining radium-barium chloride. This precipitate will have an activity equal to the original salt, and may be returned to the vessel 1 together with mother-liquor from the vessel 2 which will have the same activity. Ultimatelv a very highly active product is obtained from the vessel 4 and a slightly active product from the vessel 7.
Patent GB-299491-A (GB)
Title: Improvements relating to wattmeters
IPC: G01R11/30
Filed: 1927-07-22
Abstract: 299,491. Highfield, F. W., and Highfield Electrical Co., Ltd. My 22, 1927. Power meters for use in conjunction with dynamos for testing internal-combustion engines and other prime movers. The voltage coil b, or an additional compensating coil, is supplied from a separate small generator a in which the electromotive force is proportional to the speed. This generator may also be connected to a speed indicator. The current coil c of the wattmeter is supplied from the dynamo d connected to the engine under test, the machines a, d being mechanically connected. In a modification, the voltage coil of the wattmeter is connected across the dynamo d and an additional or compensating coil is provided in series or parallel with the speed-indicator dynamo a, the current in this coil assisting the field of the instrument and being proportioned to compensate for iron losses in the dynamo. In order to compensate for ohmic resistance losses in the dynamo when heavy currents are taken, the current coil c may be shunted by a resistance having a positive temperature coefficient.
Patent GB-426109-A (GB)
Title: Improvements in or relating to thermionic valve circuit arrangements for use in highfrequency signalling systems
IPC: H04B1/16
Filed: 1934-07-02
Abstract: 426,109. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.- (Assignees of Loughren, A. V. ; 4, Stokes Terrace, Moorestown, and Smith, J. C. ; 4618, Lafayette Avenue, Merchantville, both in New Jersey, U.S.A.) July 2, 1934, No. 19511. Convention date, June 30, 1933. [Class 40 (v)] The inner grid 40 of a radio-frequency pentode 38 is connected to the input circuit 44, the grid 41 being coupled thereto through inductance 45. The screen voltages of the two separately screened stages 35 may be simultaneously adjustable at 58. Resistances 47 are provided in the regenerative grid circuits to limit the current when the screen grid potentials are reduced below a certain value. The coupling between stages is partly magnetic from 53 and partly capacitative through 54, and the adjustment of this and the regenerative coupling is such as to obtain equal overall amplification over the tuning range.
Patent GB-1216456-A (GB)
Title: Selective hydrogenation of unsaturated hydrocarbons
Inventor: KEITH CARL DONALD
IPC: B01J35/02
Filed: 1969-04-16
Abstract: 1,216,456. Selective hydrogenation. ENGLEHARD MINERALS & CHEMICALS CORP. 16 April, 1969 [17 April, 1968], No. 19530/69. Heading C5E. Hydrocarbon streams containing hydrocarbons of different degrees of saturation are subjected to selective hydrogenation of the more unsaturated hydrocarbon(s) in the presence of a catalyst comprising a Group VIII metal supported on a unitary ceramic honeycomb type support, at a VHSV of 50,000- 4,000,000 and an actual linear velocity of 0À5-50 metres/second. The Group VIII metal may be Ni, Pt, Pd or Pd promoted with Rh, Ru, Au, Ag, Cu or Fe, and the support may also have an activated refractory oxide, e.g. alumina, deposited thereon. The process is particularly applicable to (1) removal of acetylene from ethylene streams, in which case the above process may form the first stage of a two-stage process, the second stage using as catalyst Pd on a particulate support; (2) removal of methyl acetylene (and possibly allene) from propylene streams; and (3) removing acetylenes from butadiene streams, for which Ni catalysts are particularly suitable.
Patent GB-1125354-A (GB)
Title: Improvements in or relating to colour television test signal generators
Inventor: REINMANN KARL
IPC: H04N17/04
Filed: 1967-04-27
Abstract: 1,125,354. Colour television. GRUNDIG E.M.V. ELEKTRO-MECHANISCHE VERSUCHSANSTALT, INH. MAX GRUNDIG. 27 April, 1967 [27 April, 1966], No. 19532/67. Heading H4F. The specification describes means for producing a test signal for a PAL colour television receiver, comprising a grid pattern signal and a colour bar pattern signal. Production of grid pattern signal:-A square wave crystal oscillator produces pulses at twice line frequency (it being assumed that a 625 line, 50 frames/sec picture is involved). A 1 to 625 divider 2 produces frame sync pulses (two per picture for interlacing purposes) at the output of signal shaper 4, and these cause circuit 5 to produce a horizontal bar pattern signal. The output of oscillator 1 is also fed to 1 to 2 divider 3, to produce pulses 1, Fig. 2, which in turn produce line sync pulses from shaper 6, and a vertical bar pattern signal from circuit 7. The two bar pattern signals are combined at 9 together with the combined sync signals from mixer 8. The output of circuit 9 constitutes the grid pattern signal. Production of colour bar pattern signal:-Pulses 1, at line frequency cause a bistable circuit 10 to feed switching pulses II, III to oscillators 11 and 12 respectively. Oscillator 11 works at a frequency slightly higher than the colour sub-carrier frequency and is started by the switching pulses II to give the synchronous burst IV during odd lines. Similarly oscillator 12 operating at a slightly lower frequency than the sub-carrier frequency produces the synchronous bursts V during even lines. The series of bursts are combined in mixer 13 and each line is broken up into six "bars" by means of the bar pattern output of circuit 7. In the section diagram of Fig. 3, the sub-carrier vector is stationary, such that the vector of the bursts IV rotate clockwise, and that of the bursts V rotates anticlockwise. Such opposite rotation on successive lines gives a coherent colour bar display after PAL switching in the receiver. At times t 0  at the beginning of a line-sync pulse the sub-carrier oscillation is in phase with whichever burst is present. 7Ás later at the start of the colour burst gate, on an odd line the vector of burst IV has a relative phase of +45‹ whilst at the same instance on an even line the vector of burst V has a relative phase of -45 degrees. The bursts thus have the required 90 degree relationship at the start of successive colour burst gates. Either the grid pattern signal, or the colour for pattern signal may be selected by switch 15.
Patent GB-596621-A (GB)
Title: Punch and die assembly
IPC: B21D28/34
Filed: 1945-07-31
Abstract: 596,621. Punching. WHISTLER, L. V., and WHISTLER, S. A. July 31, 1945, No. 19566. [Class 83 (iv)] [Also in Group VIII] Punches 29 and dies 30 are secured to plates 27, 28 of a sub-press mechanism by screwed pins 56 housed within the punch and die shanks. The pins may engage recesse 59 in the plates or may expand a split portion of the shank, Fig. 15 (not shown). Recesses 52 in the dies effect expulsion of waste. A stripper plate 42 is mounted on spring-pressed heads 43 secured to the plate 27 by bolts 50 or by pinned shanks, Fig. 14 (not shown). Individual strippers may be secured to recesses 54 in the punches.
Patent GB-1423059-A (GB)
Title: Flexible tubular bodies and process and device for their manufac ture
IPC: F16L11/10
Filed: 1973-04-25
Abstract: 1423059 Bending and coiling SOC DES HAUTS FOURNEAUX DE LA CHIERS, COFLEXIP and INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS 25 April 1973 [28 April 1972] 19568/73 Heading B3E [Also in Division F2] A preferably metallic strip 3a is subjected to a non-elastic deformation, prior to winding into tubular form, so that, after being wound, it has no tendency to unwind spontaneously. The strip is given a curved form in its own plane, as it passes through grooved idler rollers 24a, 25a and is thereafter twisted through 90 degrees out of its original plane, to pass between driven rollers 23a and 23b. A number of steel strips may be wound on a plastic tubular liner (1, Figs. 7 and 8, not shown). Further strips may be wound in the opposite direction thereover.
Patent GB-628199-A (GB)
Title: Improvements in or relating to method of and apparatus for bending glass
IPC: C07D213/20
Filed: 1947-07-22
Abstract: 628,199. Bending glass. PITTSBURGH PLATE GLASS CO. July 22, 1947, No. 19608. Convention date, July 11, 1939. [Class 56] Glass sheets are curved both longitudinally and transversely by being heated, as by passing through a lehr, whilst supported on a substantially rectangular frame having upstanding walls 14, 15 with the top edges thereof formed with concave depressions. Guides 20 position the sheets. U.S.A. Specification 2,021,180 is referred to.
Patent GB-386668-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H04B1/16
Filed: 1931-07-08
Abstract: 386,668. Valve circuits. MORINO, O., 36, Via XX Settembre, Genoa, Italy. July 8, 1931, No. 19636. Convention date, July 8, 1930. [Classes 39 (i) and 40 (v).] A thermionic valve has a number of auxiliary electrodes 4 .. 7 in addition to the usual cathode 3, control grid 2, and anode 1 ; and tunable circuits 8, 9, 10 are connected between the auxiliary electrodes and adjustable points on a polarizing source. The Specification indicates bv means of resonance curves the manner in which the tuning of the auxiliary circuits may be regulated to reduce interference in radio reception, and to produce an even amplification of a band of frequencies. Reference has been directed by the Comptroller to Specifications 234,809 and 303,008, [both in Class 40 (v), Wireless signalling &c.].
Patent GB-861722-A (GB)
Title: Improvements in or relating to air conditioning systems for vehicles
Inventor: FISHBURN WILFRED
IPC: B60H1/00
Filed: 1958-06-20
Abstract: 861,722. Air conditioning. NORMALAIR Ltd. June 20, 1958, No. 19759/58. Class 137 In an air conditioning unit for a vehicle, a fan 19 draws fresh air and recirculated air via inlet 14 and grille 22 respectively, through variable heating and cooling systems 17 and 11 which are in the form of closed circuits, the refrigerant circuit incorporating a by pass which operates according to a predetermined pressure drop at the inlet 13 of a refrigerant compressor 1 which is driven by the vehicle engine or a separate electric or hydraulic motor or an internal combustion engine. Refrigerant vapour from 1 passes to evaporator 11 via condenser 5, and returns to 1 via valve 12 controlled by thermostat 7, and suction control valve 26 operates the by pass from outlet 4 to inlet 13. The heater 17 is supplied with hot water from the engine radiator 6, a by pass valve 23 being regulated by thermostat 25. The fresh air and recirculated air is mixed in chamber 16 and fan 19 either draws or discharges air through 16, 11, 17 or vice versa, the conditioned air entering the vehicle enclosure via 20. The unit may be mounted above or below the vehicle enclosure and the amount of fresh air and recirculated air entering the system is electrically, hydraulically, mechanically, thermally or manually controlled.
Patent GB-713957-A (GB)
Title: Improvements in or relating to release mechanisms
Inventor: ROXBURGH HENRY LINDSAY
IPC: B64D13/04
Filed: 1951-08-23
Abstract: 713,957. Linkwork: NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 29, 1952 [Aug. 23, 1951], No. 19938/51. Class 80 (3) [Also in Group XXIX] A linkage adapted to hold a member A in a fixed relative position with respect to a member B against the influence of a spririg b or other loading comprises -a strut member d pivoted at one end at e by the member A and engaging at its other end an abutment member f which has a pivotal connection at g with lugs h of the member B. The abutment f has a flat face containing its pivot axis g so that it can be tilted to positions f or f<SP>11</SP> with little effort since it does not move the strut d against the spring loading. When the abutment plate is tilted to position f the strut d tends to slide to the right, but this is prevented by a stop j so that the member A is . held positively in relation to member B. If the abutment plate is moved to f<SP>11</SP> the strut d slides to the left and acts at an increasing distance from the pivot g of the plate under the action of the spring b until it collapses to release the member A.which then moves towards the member B. In a modified arrangement, the strut d engages the abutment plate f through a roller which is offset from the centre line of the member A to allow the abutment plate to swing clear of the path of the pivot of the strut member when the mechanism is released. The abutment plate may also be spring-biased against a controlling stop when the mechanism is in the holding position so that when the said stop is removed the biasing spring can effect an initial tilt of the plate to move the strut over the dead centre position and effect the release of the mechanism under the action of the spring b. The application of this arrangement to the actuation of an oxygen supply valve by the member A under control of a pressuresensitive device in the pressurized cabin of an aircraft and coupled to the controlling stop is described.
Patent GB-961778-A (GB)
Title: Device for deflecting molasses from the outside of a screening insert of a sugar centrifuge
IPC: B04B7/16
Filed: 1962-05-24
Abstract: 961,778. Centrifugal strainer separators. BRAUNSCHWEIGISCHE MASCHINENANSTALT A.G. May 24, 1962 [June 27, 1961], No. 19945/62. Heading BID. In a centrifuge, especially a continuously operating sugar centrifuge, a device for deflecting molasses from the outside of a screen plate insert 5 thereof has a deflecting lip 9 on the outer surface of a reinforcing ring 8 surrounding the plate 5. The ring bears against a packing ring 10, fitted on a supporting lip 4 of the centrifuge drum 1 and into a circumferential groove 11 in the ring 8. The screen plate is supported by ribs 6 inside the drum. In a modification, the deflecting lip is formed by a bead pressed out of the screen plate and the plate bears at its upper edge directly on the supporting lip of the drum.
Patent GB-730207-A (GB)
Title: An improved process for the manufacture of beer and the like
IPC: C12C7/26
Filed: 1952-08-07
Abstract: 730,207. Beer &c. DOMINION BREWERIES, Ltd. Aug. 7, 1952 [Sept. 28, 1951 No. 19957/52. Class 14 (2). In making beer and other malted beverages, boiling wort is brought to a temperature just above its freezing point, held until substantially stabilized, clarified, e.g. filtered, and then reheated to the temperature required to start fermentation. The wort may be cooled to ¢‹F. above its freezing point. Alternatively, the wort may be frozen and then melted. The boiling wort may be passed through a hop strainer 1, pumped through heat-exchangers 5, 7 and 9 into stabilizing tanks 12, held therein until all matter it is desired to remove comes out of solution, then pumped by a pump 16 through a clarifier or filter 18, e.g. a centrifuge, and through a heat-exchanger 20 into a fermenting vessel 22. During fermentation, the temperature of the wort may be controlled by circulating it through a heat-exchanger 25 and a return pipe 27. The tanks 12, the pump 16 and the clarifier or filter 18. are preferably housed in a. refrigerated room. When the boiling wort has a specific gravity higher than that which is required at the start of fermentation, the heat-exchanger 7 is omitted and the heat-exchanger 20 is replaced by a mixer in which the wort is diluted and, for example, heated with water, the amount and temperature of which are controlled. The hop strainer may be inserted between the pump 16 and the clarifier or filter 18.
Patent GB-418774-A (GB)
Title: Improvements in and relating to electric current converting apparatus
IPC: H02M7/51
Filed: 1933-07-14
Abstract: 418,774. Converting. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.- (Assignees of Allgemeine Elektricitõts-Ges.; 2, Friedrich Karl-Ufer, Berlin.) July 14, 1933, No. 20010. Convention date, July 14, 1932. [Class 38 (ii).] An arrangement for converting direct current power into alternating current power comprises two converting devices, one delivering a substantially rectangular voltage wave of fundamental frequency and the other delivering a voltage wave of substantially rectangular shape and of higher harmonic frequency. The converting devices feed through transformers 13, 23 so that they are connected in parallel on the D.C. side and in series on the A.C. side. Each converting device, e.g. 10, comprises two discharge devices 11, 12 connected in parallel and two other discharge devices 15, 16 also connected in parallel but in a reverse direction to the other two valves. The action of each converting device is as described in Specification 409,079. The reverse connection of the valves permits the exchange of energy in either direction as required by the combination of the two devices delivering voltage waves of different frequencies.
Patent GB-148142-A (GB)
Title: Improvements in explosion-actuated direct-acting machines and compressors with free pistons
IPC: F02B71/04
Filed: 1920-07-09
Abstract: 148,142. ToutÚ, H. G. C. May 20, 1919, [Convention date]. Percussive drills.-A two-stroke-cycle internalcombustion engine operating an air or gas compressor is described, which it is stated may be modified to act as a percussive tool. In each case the engine is direct-acting, and one or more pistons comprises a pump charge which is transferred to an explosion chamber at the end. of the piston remote from the pump chamber. The return movement of the pistons is assisted by springs which compress the charges to a temperature sufficient to effect ignition. The directacting air compressor shown in Fig. 2 has a pair of oppositely-moving pistons c, b, one of which compresses in the space d a pump charge for the combustion space e. The other piston compresses air in the space f and delivers it through a valve n into the chamber o. The return strokes of the pistons are effected by springs (not shown). Starting is effected by a foot-actuated toggle t which forces the pistons apart and then releases them to effect the compression and explosion of a working-charge. When the apparatus is modified to act as a. percussive tool the piston for compressing air is associated with a punch, drill, chisel or mortising tool. A single piston apparatus for actuating a machine tool is also described and comprises a short cylinder in one end of which a pump charge is compressed and then transferred to the combustion space through pistoncontrolled ports.
Patent GB-1463905-A (GB)
Title: Folding top for a motor vehicle particularly a motor-car
IPC: B60J7/12
Filed: 1974-05-07
Abstract: 1463905 Folding tops for motor vehicles DAIMLER-BENZ AG 7 May 1974 [30 May 1973] 20074/74 Heading B7B A metal reinforcement 7 is provided in the surround of a transparent elastic panel 4 at a rear corner of a motor vehicle folding top. The reinforcement ensures that the top folds consistently along the dash-dotted line running to the other end of the reinforcement. The danger of the panel breaking or becoming opaque is thus reduced. The reinforcement 7 is made of spring steel and has rounded ends 9. It is located, as shown in Fig. 3, between the top material 6 and panel surrounds 5.
Patent GB-380878-A (GB)
Title: Improvements in corsets and the like
IPC: A41C1/00
Filed: 1931-07-13
Abstract: 380,878. Corsets and like garments. ROWLAND, J. T. P. and LEETHEMS (TWILFIT), Ltd., 20, Cottage View, Portsmouth. July 13, 1931, No. 20077. [Class 141.] A restraining member is provided on a corset or like garment to adjust the pressure on the diaphragm of the wearer. If the corset is provided with the usual adjustments, the adjustment of the restraining member is independent of this. As shown, applied to a laced or wrap-round type of corset, the diaphragm member 6 forms part of an elastic band at the upper part of the corset, and is provided with hooks 7 for engaging corresponding eyes 8, 81. Stiffeners 5 may be located in pockets or the like on the inner side of the corset and may extend from the top of the band to a position 13.
Patent GB-1518488-A (GB)
Title: Tobacco-processing apparatus
IPC: A24C5/34
Filed: 1977-05-13
Abstract: 1518488 Feeding tobacco HAUNI WERKE KORBER & CO KG 13 May 1977 [14 May 1976] 20153/77 Heading A2C In apparatus for supplying tobacco to a cigarette making machine including a tobacco store 23, tobacco is supplied to the store by a conveyor 9 arranged so that it supplies a stream of constant weight and removed from the store at a rate determined by monitoring devices 27, 28 within the store. The conveyor is preferably a conveyor type weighter and the monitoring devices photo electric cells.
Patent GB-702906-A (GB)
Title: Improvements in drawers
Inventor: LACY-HULBERT CYRIL
IPC: A47B88/14
Filed: 1950-08-15
Abstract: 702,906. Drawers. SIMPLEX ELECTRIC CO., Ltd. Aug. 13, 1951 [Aug. 15, 1950], No. 24198/50. Class 52(1) In a drawer especially for cooking stoves and kitchen cabinets which are provided with a drop-down door, disposed above the drawer, the guides on which the drawer slides are each provided with an inclined portion whereby the drawer is lowered when opened. As shown the channel guide 11 mounted on the drawer 10 at each side and co-operating with a roller 12 mounted on the side of the cabinet is provided with an inclined portion 16, a similar inclined and parallel portion 21 being provided on the channel guide 18 which in this case is mounted on the cabinet 19 and co-operates with a roller 22 mounted on a rear extension 24 of the drawer 10. In order to prevent the tendency of the drawer to open the channel guides 11, 18 are provided at one end of each with portions inclined in the opposite direction to the inclination of the portions 16, 21.