baber/WOPTO huggingface dataset:
Patent GB-545194-A (GB)
Title: Improvements in or relating to the surface hardening of metal articles
IPC: C21D1/08
Filed: 1940-10-31
Abstract: 545,194. Surface-hardening. SHORTER PROCESS CO., Ltd. (Linde Air Products Co.). Oct. 31, 1940, No. 15908. [Class 72] In hardening the surface of a metal article with a hole therein, a heat-conducting insert is placed in contact with the walls of the hole and extends further above the surface along one edge of the hole than along another edge, and localized high temperature is applied to said surface while relative movement is caused between the article and the source of heat such that the higher extending part of the insert is just traversed by the heat. A tapered valve plug S is mounted for rotation adjacent the parallel face 11 of a blow pipe B, the face 11 having outlets 10, or a row of nozzles may be used. Inserts 1, 1<SP>1</SP>, are adjustably held in a hole H by a bolt 15, and thin leading edges 12 extend above the surface of the valve, while their trailing edges are cut away at 17. Cooling may be effected by quenching medium supplied through a nozzle or nozzles adjacent the blowpipe or through outlets in the latter adjacent outlets 10. Alternatively, the valve plug may be rapidly rotated to heat the whole surface, and then quenched.
Patent GB-1262436-A (GB)
Title: Apparatus for mixing two gas streams
Inventor: VERHEUL C M
IPC: B01F23/10
Filed: 1970-04-03
Abstract: 1,262,436. Mixing gases. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 3 April, 1970, No. 15941/70. Heading B1C. In a tubular casing a gas stream A consisting at least partly of one or more hydrocarbons passes from inlet chamber Q through at least one partition 6, 7 into mixing chamber R while a gas stream B consisting at least partly of oxygen passes into the mixing chamber from another inlet chamber P through tubes 5 extending through chamber Q.
Patent GB-828307-A (GB)
Title: Improvements in or relating to energy-detectors
IPC: G01K7/01
Filed: 1956-05-23
Abstract: 828,307. Electric measuring systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 23, 1956 [May 26, 1955], No. 15943/56. Class 40 (1). [Also in Groups XXXV, XL (b) and XL (c)] A temperature or radiant energy sensitive device comprises a transistor having its base connected to a source of reverse bias through an impedance which is high relative to the forward impedance of the base and low relative to its reverse resistance whereby when the temperature of level of radiation increases to a given point the leakage current offsets the reverse bias and a steep rise in collector current takes place. The Figure shows a photo-transistor 3 having a base resistance 6 and having the base biased in the reverse direction. When the light from the source 10 increases sufficiently the collector leakage current through base resistor 6 offsets the reverse bias causing the emitter to conduct and the collector current rapidly to increase and operate the relay 7. Alternatively the transistor could be connected to a moving-coil meter so that a sensitive working range is obtained on the rapidly rising portion of the circuit characteristic. The circuit will respond in the same way to a rise in ambient temperature but this can be prevented by including in the base circuit a temperature sensitive resistor such as a transistor 11 arranged to maintain the base current constant. The slope of the abruptly rising portion of the collector current characteristic can be decreased by inserting an impedance in the base circuit or increased by connecting the output of the transistor to a further transistor providing positive feedback to the base of the first transistor. In an alternative embodiment (Fig. 4, not shown) the base resistor 6 is replaced by a circuit tuned to the interruption frequency of a light source or to twice the frequency of an A.C. supply feeding the source. Radiation or absorption measurements may be made by using the detector in conjunction with a calibrated absorption wedge.
Patent GB-1237628-A (GB)
Title: Anti-soiling synthetic textile fibers
Inventor: CHINAI SURESH NATVARLAL
IPC: D01D5/22
Filed: 1969-03-26
Abstract: 1,237,628. Anti-soiling synthetic textile fibres. AMERICAN CYANAMID CO. 26 March, 1969 [12 June, 1968], No. 15950/69. Heading B5B. [Also in Division C3] A synthetic textile fibre has incorporated therein at least 1% (based on the weight of the fibre) of a colloidal particulate silica or metal oxide in the form of elongated aggregations having a length-to-width ratio of at least 10 to 1. The fibre may have a crimp imparted to it by heat relaxation. The colloidal particles may be pyrogenic silica or metal oxide particles having chain-forming surface reactive groups such as hydroxyl groups. The particles may be silica particles having an average diameter of from 70 to 140 Angstroms and a surface area of from 200 to 400 square metres per gram. The proportion of such particles in the fibre may be from 1À5 to 5% by weight. The fibre may comprise an acrylonitrile polymer. The fibre may be formed by wet spinning a spinning solution in which the colloidal particles are dispersed. The wet gel fibre thereby formed may be washed, stretched and then heat relaxed, whereby there is obtained an uncrimped fibre. Alternatively, the wet gel fibre may be washed, stretched and dried and thereafter the dried fibre may be heat relaxed, whereby there is obtained a crimped fibre. The spinning solution may comprise an acrylonitrile polymer dissolved in an aqueous saline solvent. The fibres of the invention have a translucent lustre and improved apparent anti-soiling properties. Silica or metal oxide particles which may be used are those generated by vapour phase reaction carried out by flame hydrolysis. The thus generated metal oxides include Al 2 O 3 , Fe 2 O 3  and TiO 2 . The silicas used in the example are those marketed under the Trade Marks "Cab-O-Sil" and "Aerosil".
Patent GB-683433-A (GB)
Title: Improvements in and relating to insecticides
Filed: 1950-06-27
Abstract: An insecticidal composition contains dichlordiphenyl trichlorethane, benzen hexachloride or like systemic chlorinated organic insecticide and a radio-active compound.  The preferred compounds are sodium antimonite, the antimony of which is, at least in part, Sb125; or sodium arsenite, the arsenic of which is, at least in part, As73.
Patent GB-1013055-A (GB)
Title: Improvements in or relating to float valves for fluid flow
Inventor: PLATFORD RONALD CECIL
IPC: F16K33/00
Filed: 1963-04-24
Abstract: 1,013,055. Valves. E. S. PERRY Ltd. April 16, 1964 [April 24, 1963], No. 16177/63 Heading F2V. A float valve used for controlling the admission of water to storage tanks consists of a float 1 attached to a lever arm 2 which actuates a stop valve 3 wherein the lever arm includes an adjusting device, the arm being divided into two parts arranged so that one part can be angularly adjusted relatively to the other part to vary the upper desired limit of water level at which the valve shuts, and so that the two parts of the arm can be locked in their adjusted positions. Two disc-shaped parts 8 and 7 each with interlocking teeth 13 are secured to the main part of the lever arm 2 and a socket 6 attached to the float 1 respectively. The screw 9 attached to part 8 projects through part 7 and a nut 12 on the screw permits clamping together of the parts. By loosening nut 12, the part 7 can be rotated with respect to the part 8 and angular adjustment of the float relative to the main part of the lever arm can thus be effected. The adjusting device may be of metal or plastics materials. Teeth for the clamping device are suggested in the Provisional Specification as having a pitch of 15 degrees.
Patent GB-692437-A (GB)
Title: Improvements in or relating to conveyor systems
IPC: B65G47/61
Filed: 1950-06-28
Abstract: 692,437. Endless conveyers. KING, D. M. May 29, 1951. [June 28, 1950] No. 16179/50. Class 78 (i). An overhead conveyer system of the kind comprising an endless chain adapted to impart movement to a plurality of load carriers which depend therefrom at spaced points therealong and wherein each load carrier comprises a frame or cradle and a load platform normally supported on or in such frame or cradle in a horizontal plane, is characterised in that each load platform is so supported in or on its frame or cradle as to be capable of an initial displacement in a horizontal plane and of a subsequent tilting or angular movement, thereby to effect discharge of a load therefrom, means being provided at one or more points along the conveyer path adapted, during movement of the load carrier along such path, to co-operate with means associated with the platform and the frame or cradle to effect displacement of the platform and automatic discharge of the load therefrom and further means being provided adapted to restore said platform to its initial position after each displacement thereof.. In Fig. 1. trolleys 11, moved along a track by an endless chain 12, each support a cradle 13 in which a load platform 17 is mounted on a pair of members 14 so as to be movable relatively to the cradle in a direction parallel to the direction of travel of the conveyer. A spring 18 interposed between the cradle and platform is normally held in compression by a retaining mechanism with which is associated a control lever. This lever, on contact with an abutment located at a preselected point along the conveyer path, effects release of the retaining mechanism with consequent release of the spring 18 whereby the platform is moved forwardly on the cradle so as to assume an inclined position due to the turned-down ends of the members 14, and thereby form a ramp down which the load will slide. Interengageable abutments on the cradle and platform prevent the platform leaving the cradle. The platform is restored to the loadcarrying position by rollers 20 thereon engaging one or more ramps 19. In a modification, Fig. 2, the platform 21 is moved transversely of the direction of the conveyer to effect discharge of its load, rollers on its sides engaging in tracks on the members 14 of the cradle 13. As the load carrier approaches a discharge point, a fixed wedge or ramp engages between rollers 25 and 24, mounted on the underside of the platform 21 and cradle respectively, whereby the platform is forced laterally to the dotted line position to form a ramp. This movement causes springs 27 to be compressed, these subsequently returning the platform to its load-carrying position.
Patent GB-1304417-A (GB)
IPC: G03C1/705
Filed: 1970-04-06
Abstract: 1304417 Vapour deposition TEEC RESEARCH Inc 6 April 1970 [10 April 1969] 16213/70 Heading C7F [Also in Divisions B6 and G2] Mixtures of arsenic and sulphur from 10:90 to 90:10% by weight are vacuum deposited onto grained and anodised aluminium. The aluminium may have been electro-chemically treated with sodium silicate (cf Specification 1291771) before deposition. Alternatively, antimony trisulphide may be vacuum deposited on the aluminium.
Patent GB-939482-A (GB)
Title: Improvements in and relating to agglomeration
IPC: C08J3/02
Filed: 1962-04-30
Abstract: The average particle size of a polymer in an emulsion polymerized emulsifier-unsaturated synthetic latex is increased by softening the polymer with a softener which is different from the monomers used to produce the polymer, freezing the latex to a solid condition at a temperature above temperatures at which the latex coagulates and thawing the frozen latex.  The softener may be added as an aqueous emulsion.  Specified polymers are polystyrene, polyvinyl chloride, polyvinylidene chloride, vinyl chloride-vinylidene chloride, vinyl chloride-vinyl acetate, vinyl chloride-ethyl maleate, butadiene-styrene, butadiene-vinylidene chloride, polychloroprene, butadiene-acrylonitrile, polyisoprene and polybutadiene.  A very long list of softeners includes hydrocarbons, halogenated hydrocarbons, ethers, aromatic amines, halogenated nitro compounds, esters, unsaturated ketones, cyclic compounds, terpenes, sulphur compounds and certain heterocyclic compounds.  U.S.A. Specification 3,031,427 is referred to.
Patent GB-169015-A (GB)
Title: Improvements in or relating to revolving cylinder internal combustion engines
IPC: F01B3/00
Filed: 1920-06-17
Abstract: 169,015. Reynolds, G. A. June 17, 1920. Fluid bearings; oil, catching.- Lubricant is supplied under pressure through the passage 42 in the fixed bearing and thence by the channel 40 &c. to the sockets of a swash plate driving gear. A trough 55 acts as a collector for oil, the trough rotating with the cylinder casting.
Patent GB-824099-A (GB)
Title: Improvements in and relating to bogie bolster suspension systems for railway and like vehicles
Inventor: MOULTON ALEXANDER ERIC
IPC: B61F5/08
Filed: 1954-06-03
Abstract: 824,099. Springs for railway vehicles. SEPNCER MOULTON & CO. Ltd., G. Feb. 28, 1956 [June 3, 1954], No. 16448/54. Class 103(6) In a railway vehicle bogie, a spring suspension for each end of the bolster 1 comprises a frusto-conical bonded metal and rubber sandwich spring 7, 8, 9, mounted on the spring plank or bogie frame 6 and provides transverse location of the bolster as well as vertical springing therefor. The complete spring comprises an outer hollow frusto-conical metal member 7 carried by a platform 5 projecting from the frame member 6, a hollow rubber cone 8 and an inner hollow metal member 9 supported by a member 10 depending from a dowel plate 11 located in the end of the bolster 1 by a dowel 12. In another form the spring is reversed end for end. The central bearing 2 for the bolster is rubber busher at 3 for a king pin 4. Specifications 763,432 and 824,100 are referred to.
Patent GB-201708-A (GB)
Title: Improvements in safety valves
IPC: F16K17/04
Filed: 1922-06-14
Abstract: 201,708. Hopkinson, P. G., Hopkinson, R. A., and Hopkinson & Co., Ltd., J. June 14, 1922. Safety valves; spindles.-In a safety valve of the type loaded by springs, deadweight, or lever and weight, a cap F is interposed between the loading spindle D and the valve B, the cap having a flat annular bearing surface G engaging a corresponding surface on the back of the valve, and the spindle pressing on the centre of the cap directly or through a ball K. The cap is fitted with a hardened bearing piece L for engaging the ball K or the pointed end of the spindle.
Patent GB-129280-A (GB)
Title: Improved Method of Transforming Reciprocating Rectilinear or Circular Movement into Continuous Circular Movement and vice-versa.
Inventor: SCHULTZ EMILE JOSEPH AUGUSTIN
IPC: F16H19/08
Filed: 1919-07-02
Abstract: 129,280. Schultz, E. J. A., and Seghers, A. C. July 1, 1918, [Convention date]. Mowing - machines.-A lever e imparts oscillating motion to bevel toothed wheels a, b, which are connected by through bolts j, and are supported on gudgeons f, f<1> projecting from a sleeve g surrounding the shaft h to which continuous rotary motion is to be imparted. Pinions c, d secured to a sleeve m on the shaft h have oppositely-disposed partial sets of teeth extending for less than half their circumferences. In operation, the wheels a, b are stopped at the end of an oscillation by the bolts j entering recesses l in the sleeve g, the toothed parts of the pinions cross from one wheel to the other, and are picked up and driven in the same direction as before by the next oscillation. The sleeve m drives the shaft h through a ratchet clutch o, n. A uniform speed of oscillation is obtained when the oscillating members are driven from the rotating shaft. An application of this arrangement to the cutters of mowing-machines is described.
Patent GB-960317-A (GB)
Title: Improvements in and relating to apparatus for making anhydrous aluminas
IPC: C01F7/445
Filed: 1962-04-30
Abstract: <PICT:0960317/C1/1> In a process for dehydrating and calcining hydrated alumina, the hydrated alumina is fed at f to a heat exchanger b and is dried and partly dehydrated therein by heat exchange with hot gases from a combustion and recrystallization vessel a.  The partly dehydrated alumina is fed to the vessel a through a tangential pipe t which houses a burner d so that alumina together with the burning gas mixture enter the vessel a and follow a helical downward path, the alumina being deposited finally on a fluidized bed h and the hot gases being removed through the central pipe m. Air for fluidization is introduced at q and calcined alumina is removed at i and fed to a final heat exchange device c in which it is cooled and in which combustion air introduced at k is preheated before being fed to the burner d through a line l.  In examples given the heat exchange device b and c comprise a number of cyclones connected in cascade.  Specification 922,277 is referred to.
Patent GB-1126012-A (GB)
Title: Process of applying a fluoropolymeric coating to a polyimide film
Inventor: LINDSEY WILLIAM BRYAN
IPC: C08J7/052
Filed: 1967-04-11
Abstract: 1,126,012. Coated polyamide film. E. I. DU PONT DE NEMOURS & CO. 11 April, 1967, No. 16575/67. Heading B2E. [Also in Division H1] A polyimide film is coated at up to 60C with an aqueous dispersion of colloidal particles having a 5 to 65 % polymer solids content composed of 5 to 100% copolymer of hexafluoropropylene and tetra fluoroethylene having a specific melt viscosity of 1,500 to 300,000 poises and a hexafluoropropylene content of 6.5 to 27%, 95 to 0% polytetrafluoroethylene, and 1 to 10% water soluble wetting agent, all parts being by weight; and heating the coated film at a film temperature of 340 to 435C for 0.25 to 15 minutes, the fluoropolymer layer having a final thickness of 0.02 to 1 mil. The polyimide may be of pyromellitic dianhydride and 4, 4'-diamino diphenyl ether and the film thereof has a thickness of 0.25 to 10 mils. The fluoropolymer layer may have a final thickness of 0.04 to 0.3 mil. The coated film may be heated at 370 to 400C and the coated film is preferably heated for 0.5 for 3 minutes. The dispersion may be applied to both sides of the polyimide film by passing the film through a bath of the aqueous dispersion, or to one side of the polyimide film by means of a rotating roller. Thick coatings are built up by successive applications of the dispersion. The coated film may be slit, wrapped around an electrical conductor e.g. stranded copper wire or silver coated copper wire, and heat sealed to form an electrical insulation.
Patent GB-704728-A (GB)
Title: Improvements in or relating to electric capacitors
Inventor: SHEN TZU EN
IPC: H01G4/255
Filed: 1952-07-02
Abstract: 704,728. Electric capacitors. BRITISH DIELECTRIC RESEARCH, Ltd. July 2, 1953 [July 2, 1952], No. 16692/52. Class 37 In the manufacture of an electric capacitor the capacity between two main electrodes is made greater than that required, and is reduced to its final value by application of an increasing voltage between one of the electrodes, constituted at least in part by a thin metal film, and a third electrode separated by a layer of dielectric from such main electrode and having area greater than the excess area of the film. This punctures the dielectric and burns away the metal surrounding the punctures in an increasing number of places until the capacity is correct. As shown, the third electrode 6, a strip of tin about 6 microns thick and its associated paper dielectric 7, are interposed between the main electrodes in the final few turns of a wound capacitor so that the dielectric 7 is adjacent the thin metal film 4. The main electrodes consist of layers about 1/10 micron thick of metal, such as cadmium, evaporated on one side of polystyrene dielectric strips in vacuo, and extend respectively to opposite ends of the roll. An A.C. or D.C. voltage increasing step-by-step or continuously is applied between electrodes 4 and 6 and breakdown occurs between these electrodes only. In the other embodiment, Fig. 3 (not shown), there are a stack of mica plates with thin metal deposits on one side, extending to alternate edges, the additional plate and dielectric layer being on top of the stack or within it.
Patent GB-1037036-A (GB)
Title: Improvements in or relating to transistorized multivibrators
IPC: H03K3/282
Filed: 1963-04-29
Abstract: 1,037,036. Transistor oscillating circuits. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. April 29, 1963 [May 2, 1962], No. 16719/63. Heading H3T. In a capacitively cross-coupled free-running multivibrator circuit the frequency of operation is adjusted by means of a variable base resistance which is connected to the bases of the transistors through diodes which alternately connect the resistance to the base of that transistor which is cut off. In the circuit of Fig. 2 the astable multivibrator comprises two transistors 1, 2 cross-coupled through capacitors 3, 4 which are shunted by Zener diodes 5, 6 respectively. A variable resistance constituted by NPN transistor 16, providing a constant current at the frequency of operation, is connected to the bases of transistors 1, 2 through diodes 13, 14, respectively, which are poled so that the variable resistance, i.e. transistor 16, is connected to the base of that transistor which is cut off during operation. Zener diodes 5, 6 act as switches in parallel with the respective coupling capacitor 3 or 4 and maintain a constant base current through that transistor which is conducting and terminate the charging of the capacitor associated with that transistor. The discharge of the capacitor when the transistor is cut off proceeds normally since the Zener diode is immediately cut off when the transistor becomes cut off. The discharges of capacitors 3, 4 are linear instead of exponential since the collector current of transistor 16 is substantially independent of the voltage but substantially equal to the current supplied by the emitter current. In addition a linear relationship exists between the multivibrator frequency and the emitter bias potential. Transistor 16 may be replaced by a variable resistor connected in series with a fixed resistor between the diodes and a supply, Fig. 1 (not shown). The circuit of Fig. 3 (not shown), utilizes switchable collector resistances, the arrangements being such that the cut-off transistor operates with a high collector resistance when passing into its conducting state. In the circuit of Fig. 4 the feedback path of astable multivibrator 1, 2 is closed through emitter followers 23, 24 which enable resistors 9, 10 to be of a comparatively high value to obtain good switching-over at low frequencies whereas resistors 25, 26 may have low values for short charging times of capacitors 3, 4. Transistors 27, 28 form the function of switches connected in parallel with the collectoremitter paths of transistors 1, 2.
Patent GB-201709-A (GB)
Title: Improvements in machines for grinding, polishing, and similarly operating upon lenses and like spherically-surfaced objects
IPC: B24B13/00
Filed: 1922-06-17
Abstract: 201,709. Truscott, E. F. June 17, 1922. Lenses, grinding; block apparatus; disc apparatus.-A machine for producing spherical and like surfaces on lenses &c. comprises a number of spindles A arranged in circular formation and in tiers in a frame D, which is rotatable about a shaft E. The work is interposed between pairs of shaped tools, one of each pair fitting on to a taper spigot below each spindle, and the other being engaged by a downwardly projecting finger of an adjustable crank passing through the lower end of the corresponding spindle. Each spindle A is slidable through a wheel G, which is frictionally driven from a wheel F on the shaft E, and works in conjunction with a spring pressure-device HThe spindles A are journaled in 'brackets I pivoted on centres J and pressed inwards by springs O to keep the wheels F, G in mutual engagement. Levers K effect disengagement between these wheels. The frame B tends to assume the same speed of rotation as the shaft E but is retarded by a brake-band Q and weight-lever R. A pump V draws liquid carrying an abrasive from trays B<2>, B<3>, and delivers it to a stand-pipe W. According to the Provisional Specification, the rotation of the frame B provides a means whereby the grinding process may be conveniently observed.