baber/WOPTO huggingface dataset:
Patent GB-798180-A (GB)
Title: Improvements in or relating to spirit reproducing carbon papers
Inventor: PHILLPOTTS GEORGE CORDERY
IPC: B41M5/025
Filed: 1954-08-11
Abstract: 798,180. Coated paper. CARIBONUM, Ltd. Aug. 3, 1955 [Aug. 11, 1954; July 6, 1955], Nos. 23351/54 and 19599/55. Class 96. [Also in Groups XV and XVI] Carbon paper for use in the preparation of a mirror script master copy which is used for manifolding in the " spirit reproducing " process in which the master copy is contacted with copy sheets moistened by spirit &c. which transfers the impressions made in the master copy to the copy sheets, is provided with a coating containing an alkaline substance and a colourless derivative of a coloured basic dyestuff which is a lactone or lower alkyl ether of Methyl Violet 10B (C.I. No. 681), Malachite Green A (C.L. No. 657) or a compound of the general formula where R<SP>1</SP> is H or methyl, R<SP>11</SP> is an alkyl radical and R<SP>111</SP> is H or an alkyl radical, the amount of coating on the carbon paper being sufficient for the quantity of dyestuff transferred to the master copy to be enough to produce a legible record on a plurality of copy sheets. Development of colour on the copy sheets is effected by neutralization of the alkali by acid material in the copy sheet or in the " spirit " solution used to moisten the copy sheets. Acids specified are benzoic, oleic, stearic, lauric, phthalic, tannic or acid butyl phosphate. Specification 757,136 describes the production of a similar type of carbon paper for use in manifolding. A composition for coating the carbon paper is 20 parts oleyl alcohol, 50 parts butyl ether of Methyl Violet, 30 parts paraffin wax, 1 part triethanolamine and 1 of potassium hydroxide dissolved in methylated spirit. The paper may be precoated with protective material, e.g. ethyl cellulose, polyvinyl chloride or polyvinyl acetate and a little white pigment may be added, e.g. TiO 2 . The coated paper may be protected by an overcoating of wax. Fluid for moistening the copy paper may comprise 88.5 parts methylated spirit, 5 parts acetone, 0.5 part xylene, 5 parts diethylene glycol, and 1 part tannic acid.
Patent GB-746457-A (GB)
Title: Improvements in apparatus for use in conveying cement or like powdered or granular material
IPC: B65G53/12
Filed: 1954-08-11
Abstract: 746,457. Pneumatic conveyers. SKANSKA CEMENTAKTIEBOLAGET. Aug. 11, 1954 [Aug. 12, 1953], No. 23356/54. Class 78 (1). In apparatus for use in the conveying of cement and other powdered materials comprising a tank F to which compressed air is introduced (1) through nozzles M to fluidize the material and (2) through a nozzle B to eject the material through the outlet U, parts of the valve I for controlling the supply of material and an air-escape valve UV are made of ceramic material such as feldspar porcelain. The valve cone IK is made of this material and it is provided with a - lead filling 2 which is held in place by a disc 3 mounted on the central shaft 4. The cover, which is usually provided outside the valve member of the valve UV, is also made of ceramic material.
Patent GB-981878-A (GB)
Title: Method of granulating fusible very pure silicon
IPC: B22F9/06
Filed: 1961-06-28
Abstract: <PICT:0981878/C1/1> Pure silicon in the form of a rod or pieces is granulated by crucible-free melting, and, if desired, simultaneously refined and/or its electrical conductivity is altered, by melting the silicon and which is caused to form drops which are solidified in vacuo, a gas or liquid.  The Si pieces may be a coarse compact, porous lumps, or tubes. The gas may be a gaseous or vaporized compound of silicon, e.g. SiCl4, SiHCl3 or the homologues thereof or organo - silicon compounds such as silicone oils, or inert or rare gases, H2, CO and/or H halides. The liquid may be a liquid or liquefied compound of silicon, the foregoing gases liquefied, H2O, acids, e.g. aqueous hydrohalides, aqueous alkali metal hydroxides and/or fused inorganic salts.  The silicon may be melted by a plasma burner, hot gases, electron or ion bombardment, a high-frequency current, at sub- or superatmospheric pressures, or an electric arc burning between electrodes of the silicon. When a plasma burner is used, the combustible gas can be used for doping.  The gases may also contain desired impurities, e.g. doping agents, so as to carry out doping during solidification. The gases can be circulated countercurrently to the falling drops of Si.  Si can be purified by solidification in vacuo, whereby the impurities evaporate, or in liquids, e.g. acids, whereby oxide is dissolved.  Vessel 1 of quartz contains a 10N aqueous solution of HF.  Rod 2, or a bundle of rods, of Si is fed into quartz tube 4 surrounded by high-frequency coil 3. By mechanical shaking of 2 or supplying 3 with high power at periodic short intervals, the desired particle size is obtained.  When 1 is full of Si, the HF is removed via valve 6 and tube 5, and the granules are washed with fresh HF and then water fed via tube 7.  1 is then heated and evacuated through tube 8, with 5 and 7 closed, to yield a pure granular Si.
Patent GB-625094-A (GB)
Title: Improvements in or relating to aluminium alloys
IPC: B32B15/01
Filed: 1945-09-11
Abstract: An aluminium alloy having composition comprised between the limits:-zinc 6 to 10 per cent, magnesium 1.5 to 3 per cent, copper 1 to 2 per cent, with the balance aluminium, is covered with a plating of an alloy having a composition comprised between the limits:-zinc 1 to 1.5 per cent, magnesium 1.5 to 2.5 per cent, the balance being aluminium.  The coating alloy may also contain 0.4 to 1.5 per cent manganese with or without 0.2 to 0.8 per cent chromium.  The two alloys may be united by soldering, hot rolling or extrusion.
Patent GB-312867-A (GB)
Title: Improved screw propeller
IPC: B63H1/12
Filed: 1928-08-14
Abstract: 312,867. Triggs, W. W., (Rudeberg & Co., A.). Aug. 14, 1928. Screw propellers. - The driving surface of a screw propeller blade is spherical and located with respect to the boss that if the plane of the great circle b<1> containing the chord b of the segment at the root is taken as a datum then the radial axis is directed away from the centre o of the sphere. If the blade is cut by planes c<1>, d<1> parallel to the plane of the great circle then the chords c, d, of the blade segments form angles with the chord b which increase from root to tip.
Patent GB-274678-A (GB)
Title: An improved means for marking out tennis-courts and the like
IPC: A63C19/06
Filed: 1926-09-23
Abstract: 274,678. Dove, W. Sept. 23, 1926. Drawings to Specification. Line-marking strips.-The lines of tennis courts and the like consist of flat strips of alurninium provided at intervals with holes to receive flatheaded. aluminium nails for holding down the strips.
Patent GB-870131-A (GB)
Title: Improvements in electric pulse generator systems
IPC: H03K3/55
Filed: 1958-07-22
Abstract: 870,131. Pulse generator circuits. BATAILLE, R. L. H. July 22, 1958 [March 28, 1958], No. 23480/58. Class 40(6) In a pulse generator of the type in which a pulse forming network is charged through an inductor from a D.C. supply and subsequently rapidly discharged the charging voltage of the pulse forming network is limited in dependence upon the comparison between this voltage and a reference voltage derived from the D.C. supply and in this way the circuit is protected against excessively high voltages occurring in the pulse forming network. Fig. 1 shows the circuit of high voltage generator, for example a radar modulator, in which the pulse forming network 14 is resonantly charged via inductor 10 from a D.C. supply between terminals 11 and 32 and rapidly discharged when switch 19 is closed under the control of a pre-modulator 20 so that high voltage pulses are generated across the load connected to output terminals 15, 16. If due to any cause the impedance across the output terminals 15, 16 varies in value so that the voltage at the input 13 to network 14 exceeds the normal peak value, i.e. twice that of the D.C. supply, the tapped voltage divider 22, 23, 17 causes the voltage applied to the control electrode of thyratron 26 to exceed that of the supply voltage at point 11. The thyratron thus fires and shorts inductor 10 thus reducing the voltage at terminal 13 and preventing its successively increasing. The thyratron may be fed from a potential divider via a cathode follower stage Fig. 3 (not shown). Fig. 4 shows the detailed circuit diagram of a radar modulator in which the protective thyraton 26 is controlled by a D.C. voltage fed from the tapping point of a resistive potential divider 22, 23 which forms part of a bridge 41 comprising a galvanometer 42 operated as a peak volt-meter. The switch for discharging the pulse forming network periodically, comprises a thyratron 43 having its grid 44 controlled through a transformer 45 from a pre-modulator unit 20.
Patent GB-779969-A (GB)
Title: Improvements in or relating to powder metallurgy
IPC: B22F9/24
Filed: 1955-08-15
Abstract: The individual particles of ferriferous, e.g. iron powder for use in the manufacture of compressed and sintered articles are provided with a copper coating by treatment with a solution of a copper salt in an aqueous medium containing hydrochloric, hydrobromic or hydrofluoric acid and a nitrogenous organic basic inhibitor.  The copper salt may be the sulphate, chloride or carbonate; inhibitors referred to are coal tar bases, aldehyde-amine reaction products, amino acids, alkaloids, end corresponding sulphonated and sulphated derivatives of these, specific compounds being mentioned.
Patent GB-723708-A (GB)
Title: Process for the preparation of an inoculation material for use against sleeping sickness
IPC: A61K39/005
Filed: 1952-09-18
Abstract: An inoculation material against animal and human trypanosomiasis (sleeping sickness) is prepared in manner known per se using trypanosomes which in their form resemble or are identical with the trypanosomes occurring in infected glossina (tsetse flies) said trypanosomes being killed before or during the preparation of the inoculation material.  Such trypanosomes may be obtained from species such as Trypanosoma gambiense, Trypanosoma brucei, Trypanosoma rhodesiense or Trypanosoma equiperdum by (a) immunising rats with the water-insoluble constituents of trypanosomes killed by cold e.g. -80 DEG C.  (CO2 and acetone) and suspended in aqueous saline solution, and then, for example after 4 to 10 days, infecting the rats with living trypanosomes; (b) infecting rats with trypanosomes and treating them with chemotherapeutic agents known to be effective against sleeping sickness e.g. germanin (sodium salt of m-aminobenzoyl m-amino-p-methyl benzoyl-1-naphthylamino 4, 6, 8-trisulphonic acid) and tryparsamide preferably with simultaneous injection of glycocoll; (c) selection of the odd spontaneously produced form occuring sometimes when rats are infected with trypanosomes; and (d) infecting rats with trypanosomes which have gone through may recidivations e.g. a rat infected with a trypanosome is treated with a sleeping sickness drug and their serum isolated after 6 days.  A mouse infected with the same species of trypanosome is treated with the prepared blood serum.  After 6 to 9 days a recidivated form of the trypanosome appears.  This form is transferred to a rat and the process is repeated until the tsetse fly trypanosome form occurs spontaneously.  An inoculum material is obtained by e.g. taking the blood of rats infected with the desired form of trypanosome, mixing with a citrate solution and centrifuging out the trypanosomes, which are recentrifuged and suspended in physiological saline solution to which 0.5 per cent. formaldehyde has been added.  Specification 429,449 is referred to.
Patent GB-360470-A (GB)
Title: Improvements in system and apparatus for the electrical production of images
IPC: H04N3/10
Filed: 1930-08-06
Abstract: 360,470. Television. COMMUNICATION PATENTS, Inc., 60, Broadway, New York, U.S.A. Aug. 6, 1930, No. 23529. Convention date, Oct. 7, 1929. [Classes 39 (i), 40 (iii), and 40 (v).] Scanning of the object or image is performed by an arc moved by a magnetic field. Transmitter. An arc is initiated across a gap 27 by the ionizing effect of high-frequency currents from an oscillator 39 at periods controlled by a piezo-electric crystal 38. The arc is maintained by a direct-current generator 35 and moves, owing to the field of a solenoid 25, between rail electrodes 24, which are designed in an endless scanning path. Light from the arc passes through a pinhole or lens 122 to the object, from which it is reflected to a photo-electric cell 37. The photo-electric current modulates a carrier wave transmitted from an oscillator 41. Receiver. The received currents are passed through an amplifier 87 and superimposed by a transformer 88 on the current from a generator 59 producing the scanning arc, which is therefore varied in intensity. According to a modification, Fig. 9 (not shown), the intensity of the arc is varied by spreading it out by passing the received currents through a coil at right-angles to the solenoid 57. Synchronizing. The arc should return to the gap 27 at the same time as the next emission of high-frequency current by the oscillator 39. Otherwise the speed of the arc is varied appropriately by altering the current in the solenoid 25 by a synchronizer 42, shown in detail in Fig. 8. The speed of the arc is also controlled at intermediate points 61 by high-frequency currents from the oscillator of less intensity and corresponding to a harmonic of the piezo-electric crystal frequency. The synchronizing impulses are applied to a thermionic amplifier 71 and impulses from gaps 114, 115, as the arc passes them, are applied to an amplifier 70. A current is produced in a resistance 75, depending in direction on which amplifier operates first, and the output from a power amplifier 77 to a bridge 78 is varied accordingly, so that an amplifier 82 feeds increased or decreased currents to the solenoid 25. The impulses from the oscillator 39 modulate the oscillator 41, and, at the receiver, are separated by a filter 47 and operate a synchronizer 65 as described above. Duplexing. Each station may transmit and receive in rapid alternations controlled by respective oscillators 120, 90.
Patent GB-337424-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1929-07-31
Abstract: 337,424. Automatic Telephone Manufacturing Co., Ltd., Gillings, C., and Rice, T., G. July 31, 1929. Automatic exchange systems.-In a call finder system, a pendulum impulse generator which is started up on the initiation of a call is connected to the finders by the allotting arrangements. The invention is described with reference to a system in which double-wiper 200-point up-and-around switches are allotted by a relay arrangement of the kind described in Specification 334,218, and to a system in which similar switches are allotted by a rotary switch as described in Specification 333,928. First system. When a subscriber calls, the group relay AW (or BW (not shown)) starts the interrupter VA (or VB). The sub-group relay 1A (for the subscriber shown) energizes wiper changing relay D and relay C and connects up the vertical magnet as well as marking a vertical terminal. When the level is reached, A releases C to connect up the rotary magnet. When the line is reached CO, H pull up in series with a holding winding of LR, the talking circuit is switched through, the starting circuit extended and the starting relays released. If the switch misses the line H operates over 11th step spring S1 and is followed by HR which releases A to release the switch. Second system. A relay AX (not shown) operated when any subscriber calls, starts the inter. rupter VA and energizes AD in the allotter. C pulls up and magnet V drives the switch under control of vertical wiper VW until A operates, locks, and cuts off C to transfer the interrupter to the rotary magnet R. When HB or HA switches through AE releases AD and the allotter is driven on. If the finder misses the line, AE is operated over 11th step springs, the allotter goes on and the finder is released.
Patent GB-1335948-A (GB)
Title: Dehydroisomerization process
Inventor: CARTER N D
IPC: C07C5/387
Filed: 1972-05-19
Abstract: 1335948 Dehydroisomerizing alkylcyclopentanes TEXACO DEVELOPMENT CORP 19 May 1972 [21 June 1971] 23595/72 Heading C5E Alkylcyclopentanes are dehydroisomerized to aromatic hydrocarbons by contact with a fluorided catalyst comprising 0À01-5 wt. per cent Re, Pt, Pd, Rh or Ru on alumina in the presence of H 2  and a carbon oxide, the latter being introduced to the process at the rate of 5 x 10<SP>-5</SP> to 5 x 10<SP>-3</SP> gram mol. per hour per g. of catalyst. The catalyst may contain 0À5-15 wt. per cent F on Al 2 O 3  support which may also contain thoria, silica, ZrO 2  or TiO 2 . The feed may be a gasoline or naphtha fraction containing C 6 -C 8  alkylcyclopentanes. The reaction may be effected at 750-1000 F. and a H 2  pressure of 200-750 psig. The examples describe the conversion of methylcyclopentane to benzene.
Patent GB-185028-A (GB)
Title: Improved apparatus for use in playing a race game
IPC: A63F9/14
Filed: 1921-09-05
Abstract: 185,028. Tonner, G. V. Sept. 5, 1921. Race games, mechanical.-In a power-operated race game of the kind in which the movement of racing-units along guides is controlled by the rotation of crank-handles by competitors, mechanism is provided whereby operative connection between the source of power and any individual racing-unit is maintained only so long as the corresponding crank-handle is turned at a speed which exceeds a predetermined critical speed, but any excess of speed above the critical speed produces a corresponding reduction in the speed of the racing-unit. As shown, each crankhandle 11, Fig. 1, is fitted to a shaft 13 and operates a governor 20. Independently rotatable on the shaft 13, but separated from it by a stationary tube 17, are a cylindrical driving- drum 29 driven at constant speed by and endless cord 30, and an inverted conical winding-drum 23 connected to the racing-unit by a cord 27. The vertical movements of the collar 19 of the governor are communicated to the drum 23 through a ball-race 25, so that as the speed of the crank-handle is increased the drum 23 rises until its extension 34 engages a projection 35 on the power drum and mechanical connection between the drums is effected. Any further increase in the speed of the crank-handle causes the drum 29 to rise and the cord 27 to be wound on a smaller part of the drum 23, thus reducing the speed of the racing-unit.
Patent GB-855173-A (GB)
Title: Improvements in and relating to fuel injection systems for internal combustion engines
Inventor: BUTLER STANLEY MILTON
IPC: F02M21/00
Filed: 1956-07-31
Abstract: 855,173. Fuel injection pumps. MUNTZ& CO. Ltd., A. July 22, 1957 [July 31, 1956], No. 23646/56. Class 7(3). [Also in Group XXVIII] The fuel injection pump 16 of a supercharged engine is actuated by combustion chamber pressure supplied to one side of the pump piston 13, the other side being subjected to a pressure which increases' as the supercharge pressure increases. The pump plunger 16 is connected to the piston 13 which is subjected to cylinder pressure through a pipe 14, the lower side of the piston being loaded by scavenging air pressure in a crank-shaft engine, the air reservoir pressure in a free piston gas generator, or, as shown in Fig. 1, the maximum pressure in the cushion of a free-piston engine which is applied through a passage 31 with a non-return valve 32 therein. The pump delivery pipe 23 is connected to an accumulator 34 the plunger 41 of which is loaded by a constant gas pressure applied at 39 and the downward movement of the piston is cushioned by liquid trapped therebelow when the piston covers the outlet port 43. The inlet port is provided with a non-return valve 44 and the fuel stored in the accumulator on each delivery stroke of the pump is delivered to the injector as the pump stroke ends. The pump delivery is controlled by an eccentric 28 controlling the time of closing of the inlet valve 19 actuated through a lever 27 by the pump piston 16. In a modification the pump actuating piston 13 is formed as a differential piston with a larger lower area than the upper area on which cylinder pressure acts and in a further modification the bottom of the accumulator cylinder is directly open to the pipe 23, the travel of plunger 41 being limited by a pile of spring washers. Specification 628,132 is referred to.
Patent GB-887151-A (GB)
Title: Method of and apparatus for cutting tubing
Inventor: WILSON MARTIN WESTBURY
IPC: B23D21/00
Filed: 1959-07-09
Abstract: 887,151. Severing tubing. TUBE MAKING MACHINES Ltd. July 1, 1960 [July 9, 1959], No. 23665/59. Class 31 (1). [Also in Group XXII] Apparatus for severing tubing comprises dies 10, 10A for clamping the tubing, means 12 for advancing a cutter 13 through slots in the dies to make a cut across the clamped tubing, and means for driving a blade 14 into the cut and through the clamped tubing. The fixed die 10A and the adjustable die 10 are mounted on a carriage 16 having wheels 17 and a crossslide 18 carrying the cutter 13 and blade 14. After clamping the tubing, the slide is moved to the left to effect the cross-cut and position the blade 14 for severing the plastic tubing by removing a ring of material which falls through an opening 24 on to a plate 25. Movement of the die 10, cross-slide 18 and the blade 14 may be effected manually, through levers and cams, or by pneumatic or hydraulic cylinders. Springs 20 effect return movements of the blade 14.
Patent GB-740976-A (GB)
Title: Improvements in or relating to gear cases
Inventor: CUTLER WALTER RICHMOND
IPC: B62J13/04
Filed: 1952-09-22
Abstract: 740,976. Cycle gear cases. SPEEDWELL GEAR CASE CO., Ltd. Sept. 11, 1953 [Sept. 22, 1952], No. 23672/52. Class 136 (1). A cycle gear case made of relatively thin sheet metal is secured to the cycle frame in two positions by reinforcing members 24, 37 of metal strip secured internally of the gear case body, the members 24, 27 being of thickness greater than the walls of the gear case and receiving fastening elements 31, 39 for drawing them against the adjacent chain stay 30 of the cycle frame. The member 24 is of C shape. As shown in Fig. 2, a portion 34 of the member 24 is shaped to mate with the chain stay 30. The member 37, Fig. 3, carries a central boss 38 which is internally threaded to co-operate with a bolt 39.
Patent GB-742428-A (GB)
Title: Improvements in and relating to surgical bandages
Inventor: SCHUELER GEORGE BERTHOLD EDWAR
IPC: A61L15/58
Filed: 1953-08-27
Abstract: A woven surgical bandage has its longitudinal edges treated with an adhesive binding substance to prevent fraying.  It is preferred to use a 1 to 3 per cent aqueous solution of sodium alginate or molten paraffin wax.  This is applied to the edges of the bandage by the lateral surfaces of the cutting knives used in its manufacture or it is applied to the edges of the rolled bandage by rollers or brushes or by passing the bandage over a flat plate carrying the adhesive. The adhesive used is such as not to hinder unrolling the bandage although it may have sufficient strength to prevent accidental unrolling when the bandage is being applied.
Patent GB-1075384-A (GB)
Title: Apparatus for limiting entry of air into flare stack
IPC: F23G7/08
Filed: 1965-06-03
Abstract: 1,075,384. Flare stacks. JOHN ZINK CO. June 3, 1965 [Dec. 8, 1964], No. 23764/65. Heading F4T. A flare stack includes a trap 24 comprising coaxial spaced walls 21, 25, 31 forming an inner annular passage 27 down which the waste gas passes and an outer annular passage 32 up which the waste gas passes to the flare outlet, and a plurality of flaps 46 are pivoted to the wall 25 and are adapted to obstruct partially the outer annular passage 32. The flow of the waste gas moves the flaps to positions in which they do not obstruct the annular passage but when the flow of waste gas is replaced by a slower flow of a purge gas the flaps move by gravity into the partially obstructing position. The flaps are spaced from each other.