baber/WOPTO huggingface dataset:
Patent GB-221059-A (GB)
Title: Improvements in or relating to electrically heated kettles and like utensils
IPC: H05B1/02
Filed: 1923-07-28
Abstract: 221,059. British Electric Transformer Co., Ltd., and Ellwood, E. July 28, 1023. Switches, quick-break.-An electric kettle A or the like is provided with a switch which, after being closed by hand, will remain closed as long as the kettle is at rest upon its support B but which will automatically open when the kettle is lifted from its support and must be again closed by hand if it is desired to resume the heating. The switch spindle 7 which is provided with an operating handle 2 carries contacts 1 and a washer 8, slotted as shown in Fig. 5, and connected to one end of a spring 6 the other end of which is fixed. The. washer is operated to put an initial tension on the spring and then clutched to the spindle by moving the slotted portions 8<a> into engagement with the part 9<a> of the spindle. When the switch is moved into a position to close the circuit through the heater and the kettle is placed on the stand B, the handle 2 abuts against the stand and is prevented from returning to its open position by the weight of the kettle. The switch contacts are preferably made of rustless steel. A small glow lamp of the type described in Specification 23940/12, [Class 37, Electricity, Measuring &c.], may be fitted in the heater circuit as a visual indicator
Patent GB-912338-A (GB)
Title: Process for the preparation of crystalline compounds of pyrrolidino-methyl-tetracycline with organic acids
IPC: A61K31/65
Filed: 1959-06-08
Abstract: Crystalline compounds of pyrrolidino methyl tetracycline with certain organic acids are obtained by treating a suspension of crystalline pyrrolidino methyl tetracycline in an aliphatic hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, halogenated aliphatic hydrocarbon, halogenated cycloaliphatic hydrocarbon, halogenated aromatic hydrocarbon, nitromethane or nitrobenzene, with a solution of citric, tartaric, malic, malonic, succinic or cinnamic acid in ethyl ether, ethyl acetate, acetone, methyl ethyl ether, dioxane, tetrahydrofurane, an aliphatic alcohol or a mixture of such alcohols.  Specified organic dispersing media are hexane, cyclohexane, benzene, toluene, xylene, methylene chloride, chloroform, carbon tetrachloride, ethylene dichloride, ethyl bromide, chlorbenzene and bromobenzene.  The amount of organic acid to be reacted with the pyrrolidinomethyl-tetracycline can vary and will affect the pH of the product when dissolved in water.  The products are very soluble in water and are resistant to atmospheric oxygen. They are used in pharmaceutical preparations (see Group VI). Specification 872,991 is referred to.ALSO:A pharmaceutical preparation comprises the crystalline citrate, maleate, tartrate, malonate, succinate or cinnamate of pyrrolidino-methyltetracycline in admixture with a pharmaceutical carrier.  The compounds are water-soluble and stable to atmospheric oxidation.  Specification 872,991 is referred to.
Patent GB-1421367-A (GB)
Title: Method and apparatus for improving the fuel injection character istics of internal combustion engines
IPC: F02B23/02
Filed: 1973-04-25
Abstract: 1421367 Fuel injection to IC engines; combustion chambers; injection nozzles McCULLOCH CORP 25 April 1973 [5 July 1972] 19627/73 Heading F1B Fuel injection apparatus for I.C. engines comprises a pump 100 from which fuel is supplied via a passage 102 to a nozzle 101, the flow-rate under some operating conditions from the pump into the passage 102 being greater than that from the passage to the nozzle 101, the fuel flow per engine working stroke from pump to passage and the amount of fuel diverted from the passage (i.e. not reaching the nozzle) being greater at low engine speeds than high for a given load. The amount of fuel supplied to the passage 102 by the pump 100 is determined by regulating the displacement volume of the pump in response to engine speed and the proportion of fuel diverted is determined by a valve 109 the opening of which (if any) is determined by the throttle position. The fuel injected into the combustion chamber from nozzle 101 emerges from the nozzle in discrete streams except under idling conditions, when the fuel streams are more diffuse. The form of these streams is determined by the amount the nozzle valve opens, Figs. 8 and 9 (not shown). The discrete streams are directed to agitation zones 105 Fig. 1 and 25 Fig. 3 and combustion occurs in discrete regions of burning 106 Fig. 1 and 30 Figs. 4 and 5, (not shown). The invention is applied to an I.C. engine 1 Fig. 2 having a working cylinder 2 to which combustion air is supplied by an air pumping cylinder 3 via conduit 10. Fuel is supplied by a pump 15 to a nozzle 17 which discharges in pre-combustion chamber or cavity 19.  A valve 109 may be included in the conduit from a fuel pump to each injection nozzle of a multicylinder engine or a single valve 109 may be used with a conventional multiple output rotary fuel pump shown in Fig. 6. Fuel passes to pumping chamber 203 from a passage 203a connected to a fuel source via a metering valve (e.g. 123 in Fig. 1) and is pumped from chamber 203 by pistons 202 during rotation of a rotor 201. The fuel leaves the pump via a passage 205 and sequentially via output flow-paths 206. The valve 109 is connected to the distribution passage 205 via passage 112, groove 207 and passage 208.
Patent GB-579062-A (GB)
Title: High frequency oscillators
IPC: H03B5/18
Filed: 1943-11-24
Abstract: 579,062. Oscillation generators. STANDARD TELEPHONES & CABLES, Ltd. Nov. 24, 1943, No. 19668. Convention date, Oct. 8, 1942. [Class 40 (v)] A generator of ultra-high frequencies (e.g. 900 megacycles), comprises a triode tube of known type in which the electrodes are surrounded by a screen 32 which is connected to the cathode K. The grid is earthed through a condenser and leak and the cathode and plate are earthed through frequency-determining coaxial lines. In' the construction shown, the tube is mounted in an insulating block carried by a metallic disc 24 in a cylinder 18 which constitutes the outer conductor of both coaxial lines. One inner conductor, 22, embraces the shield 32 of the tube and the other, 20, is capacitively coupled to a rod 44 over which the anode receives its supply current. The lines are tunable by pistons 21 and 16. The grid condenser is formed by a conducting ring 38 in co-operation with the supporting disc 24. The heater is supplied over a lead 92 passing between the conductors 22, 18 as shown. The heater and anode feeds are earthed over condensers 96, 54. To improve the symmetry, each of the tube electrodes preferably has two external connections as indicated in Fig. 3.
Patent GB-364130-A (GB)
Title: Improvements in or relating to the treatment of textile fabrics
IPC: D06B1/00
Filed: 1930-06-28
Abstract: Textile fibres, yarn, knitted or woven fabrics, &c. are treated in a homogeneous gas stream containing a volatile liquid to form a vapour, e.g. steam, and a part of the liquid is deposited at a rate constant throughout the surface area of the material treated by a sudden or substantially sudden reduction in temperature or pressure or both. The area of maximum temperature or pressure drop coincides with the place occupied by the material at the moment of treatment, the gas passing through the material as it is being continuously fed through the apparatus.  The apparatus used may be divided into three portions, in the first the material is treated with a gas containing a vapour, in the second with a gas containing a liquid or solid in suspension for waterproofing &c., and in the third the material is cooled or dried.  The material, which may be initially cooled, is fed from pressure rolls through the treating chamber 17, 18 between a pair of reticulated or perforated endless bands 10, 11, the upper band 10 carrying rubber flaps 16 so as to form an enclosure between the bands.  A current of air or gas passes from the pipe 40 to the pipes 23 in which it is intimately mixed with steam or other volatile liquid from jets 25 and the humidified air or gas passes upwardly through the material.  The pressure or temperature or both in the compartment 17 is lower than in the compartment 18 so that a deposition of liquid takes place on the material.  Regulating means 30 are provided to control the humidity of the stream.  The stream of air or gas is returned through pipes 35, 38 to be used again and this stream passes up through a liquid bath 42 fed by liquid condensing on the walls of the compartment 17.  The material then passes through a similar chamber in which solids or liquids in the form of a light mist may be deposited, but in this case jets of air or steam are blown into horizontal pipes and meet at right-angles further <PICT:0364130/IV/1> jets of liquid or solid to be carried in suspension.  The material then passes to the cooling or drying chamber and is withdrawn from the apparatus through pressure rolls. The apparatus may be used for increasing in any desired ratio the moisture content of textile fibres &c. and for treating such material with the vapours of volatile liquids such as vulcanizing media.  The 3rd Provisional Specification refers to the treatment of material with rubber solutions and to the deposition of metallic dust. Specifications 16765/86, 15171/95, and 13356/05, [all in Class 15, Bleaching &c.], are referred to.
Patent GB-502066-A (GB)
Title: Improvements relating to filling and venting devices for electric accumulators
IPC: H01M50/609
Filed: 1938-07-02
Abstract: 502,066. Galvanic batteries; indicating liquid - levels. CHLORIDE ELECTRICAL STORAGE CO., Ltd., and DEAN, H. July 2, 1938, No. 19686. [Class 53] [Also in Group XVIII] To prevent overfilling .of an accumulator, a cylindrical sleeve h, Figs. 1 and 3, is rotatably held in a cylindrical skirt band so formed that when the filling plug is removed the venting means of the accumulator are closed. The sleeve h co-operates with a bayonet type plug g which is locked on being given a quarter turn by means of inclined lugs j passing under projections k. When the plug is inserted, the lugs j engage orifices i in the sleeve h. When the plug is locked, the sleeve h is also given a quarter turn, so bringing the orifices i into line with slots d in the surrounding skirt b. The space c above the electrolyte is thus vented through the slots d, orifices i and plug vent f. When the plug g is removed the resultant quarter turn given to the sleeve h closes the slots a forming an air lock in the space c if excess electrolyte is poured in. A ring o, integral with the sleeve h, sprung into a corresponding groove in the skirt b may hold the sleeve in position. Alternatively, it may be held by having a tapered upper portion engaging a correspondingly shaped surface formed on the skirt, Fig. 5 (not shown), or it may he screwed into the skirt, Fig. 9 (not shown). Specification 479,724 is referred to.
Patent GB-573776-A (GB)
Title: Process for the production of toluene
Filed: 1943-11-25
Abstract: Toluene is produced by fractionating a substantially saturated naphthenic petroleum distillate 1 to obtain fractions 2 and 3 respectively boiling below and above 180-190 DEG  F., fractionating 3 to separate fractions 4 and 5 boiling below and above 200-212 DEG  F. respectively, catalytically isomerizing 4, fractionating the isomerizate 6 to yield fractions 7 and 8 boiling below and above 200-212 DEG  F., fractionating 8 admixed with 5 to obtain fractions 9 and 10 boiling below and above 218-235 DEG  F., catalytically dehydrogenating 9 to produce an aromatic-containing fraction 11, fractionating this to separate fractions 13 and 14 boiling below and above about 230 DEG  F. respectively, and recovering toluene from 13, for example by treating with a selective solvent to separate an aromatic from a non-aromatic fraction 16, recovering the aromatic fraction 17 from the solvent, refining with acid, and fractionating to yield pure toluene and a bottoms fraction 12 which is recycled for fractionating with aromatic-containing fraction 11.  Part of fraction 7 may be recycled to the isomerizing stage with fraction 4.  The aromatic fraction 11 is separated from fixed gases including hydrogen, part of which may be recycled to the dehydrogenating stage and the remainder scrubbed with part of fraction 10 which is then refractionated in admixture with fractions 8 and 5.  Fraction 14 may also be recycled and fractionated with 8 and 5.  Isomerizate 6 may be recycled for fractionating with fraction 3.  An unsaturated naphthenic fraction which usually includes methyl cyclohexane and toluene, such as fractions including the 225-235 DEG  F. boiling range, is advantageously added to fraction 9 and subjected to the dehydrogenation therewith.  The isomerization is effected with a Friedel-Crafts' type catalyst such as chlorides of Zr, Zn, Sn, Be, Nb, Ta, Sb, B and Cd, and preferably AlCl3 in a complex thereof with kerosene, cyclohexene or aromatics, promoters and hydrogen also being added.  Conditions specified are 50-212 DEG  F., 1-20 atmos., 0.1-5 per cent hydrogen chloride based on the hydrocarbon, and contact times of 5-45 mins.  The dehydrogenation is effected in presence of hydrogen with the known catalysts, e.g. oxides of Cr, Mo, Ti and V on adsorptive alumina, or a mixture of tungsten and nickel sulphides when suitable conditions are 750-1000 DEG  F., 5-75 atmos., mol. ratio of hydrogen to hydrocarbon 4 : 12, and liquid hourly space velocity 0.5-4. Such catalysts are preferably regenerated with SO2 which is obtained by combustion of H2S, part of which may be obtained from the recycled hydrogen by scrubbing with a phosphate solution.
Patent GB-299407-A (GB)
Title: Improvements in artificial horizons
IPC: G01C15/14
Filed: 1927-07-26
Abstract: 299,407. Henderson, Sir J. B. July 26, 1927. Addition to 269,280, [Class 106 (iii), Fares &c. J. Gyroscopic apparatus.-The apparatus according to the parent Specification for integrating accelerations is adapted to be used as an artificial horizon for a sextant &c. when the integral of accelerations is zero. Referring to the drawings of the parent Specification, the sextant &c. is secured to the ring 45 carrying the eyepiece 43 and objective 44 with its plane of reflection vertical and parallel to the axis of collimation of the telescope and with its lower mirror opposite the objective. The telescope is brought into the meridian and the sextant adjusted until the image of a selected star is brought on to the graticule 46, preferably at the zero of the scale. The luminous image of the collimator graticule 63, indicating the tilt of the level, is also seen on the scale. If the reading of this image is steady when the star image is kept at zero by adjustment of the screw 20, the altitude of the star is given by the reading of the sextant. If the luminous image is not steady its rate of movement may be measured to determine the slope of the level which is applied as a correction to the sextant reading. Alternatively, by using the screw 20, the level carrier can be adjusted to the true horizontal, the altitude of the star being then given by the reading of the sextant after adjustment to bring the star image to the zero of the scale;
Patent GB-1016731-A (GB)
Title: Mounting arrangements for printed circuit boards
Inventor: HUNT REGINALD ERNEST GEORGE
IPC: H05K7/14
Filed: 1962-05-23
Abstract: 1,016,731. Mounting electrical equipment. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 21, 1963 [May 23, 1962], No. 19877/62, Heading H1R. A printed-circuit board 1, Fig. 1, having components 2 mounted on its reverse side is provided on its wiring side with two brackets 7 which facilitate handling and servicing; an angle support 8 is secured to the reverse side of the board parallel to the edge 6 thereof, which is received in connectors mounted on a vertical angle member 13, the wiring being brought to edge 6 so that it co-operates with contact members within the connectors. Member 13, which is one of a plurality of such members mounted between horizontal bars (not shown) to form a supporting rack, carries protruding rods 18 which engage in holes 10 in angle support 8. Incorrect insertion of a board in the rack is prevented by arranging that supports 8 lie between brackets 7 on adjacent boards. In a modification (Fig. 4, not shown) boards 21, 21a of different heights are mounted on angle supports 23 of the same length; connectors 32 are carried on vertical members 33 which are adjustably mounted on bars 34 to provide for boards of varying widths. Protruding rods 29 which extend from horizontal rack members 30, 31, may be threaded to co-operate with nuts or spring clip devices. Alternatively, the rods may be provided on the angle supports, and the holes in the rack members. Identification characters may be exhibited on the exposed ends of brackets 7.
Patent GB-166901-A (GB)
Title: Improvements in friction clutches
IPC: F16D13/08
Filed: 1921-07-25
Abstract: 166,901. Hemmer Ges., L. P. July 24, 1920, [Convention date]. Clutches. friction; operating.-Contracting-coil clutches, Fig. 1, for coupling a driving-pulley a. with a shaft l are tightened on a drum i, keyed to the shaft, by applying brake shoes o, 0<1> to the loose outer toothed annulus k of an epicyclic gear, the planet pinions g, g<1> of which engage a sun-wheel h on the drum i, and are carried by a planet ring e connected by a pin d to the free end of the coil b. In a modification, Fig. 3, a strap is used in place of the coil, and the planet ring is turned forward to slacken the strap after release of the brake by a blade spring l, carried by the driving-member b keved to a shaft c. The strap, shown developed in Fig. 5, passes twice round the driven drum a and comprises a narrow portion e, secured to a lug q on the planet ring, and a wide, bifurcated portion, between the branches h, h' of which the part e lies, and which is secured to the driving-member b. Alternatively, the part e is provided with studs, which may be of the same material as the strap, these studs passing through perforations in the wide part. The brake may be remotely controlled by ropes or electromagnetically, and the overloading of driving-motors such as turbines, internalcombustion engines, electric motors &c., due for instance to the acceleration of heavy parts, such as centrifugal machines, large motor-vehicles, &c., can be limited by adjusting the brake pressure. It is stated in the Specification as open to inspection under Sect. 91 (3) (a) that, by using a brake of the Prony type, the apparatus may be used as a dynamometer, and that two prime movers can be coupled by driving the brake-drum by a belt. This subject-matter does not appear in the Specification as accepted.
Patent GB-409534-A (GB)
Title: Improvements in a method of making finely divided metal oxides
IPC: C01B13/32
Filed: 1933-07-14
Abstract: In making finely divided metal oxides, molten or melting raw material is dispersed with a substance of which the grain size is comparable with that of sand and which is practically insoluble in water, and in this state is subjected to reaction with one or more oxidizing agents, after which the dispersion agent may be separated.  As dispersion agents, sand, glass, stone, porcelain, unglazed stoneware, gravel and unreactive granulated metal or alloys are specified.  The particle size varies from 0,1 to 8 mms.  The dispersion agent may have a catalytic action or be impregnated with suitable metal salts for this purpose.  Gaseous oxidizing agents, e.g. air, oxygen or steam, are generally employed.  The other reaction component may be a pure metal or metal compound or alloy.  The reaction temperature should not be more than 100 DEG  C. above the melting point of the raw material. Examples relate to the production of antimony oxide from the sulphide, zinc oxide from the metal, granulated iron being used as dispersion agent and steam as oxidizing agent, and lead antimonite from a lead-antimony alloy, chile nitre being used as oxidizing agent and sand, or unglazed stoneware or porcelain grit impregnated with ferric chloride, as dispersion agent.  In the last example, the dispersion agent is removed by sifting and sodium salt by washing.  Other examples relate to the production of red lead from the metal at 400--500 DEG  C.  To accelerate the reaction, the air or oxygen used, at any rate, in the latter stages of the process, is supplied under pressure, e.g. at 1.5 atmos.  Sand separated from the finished product is re-used.  In some cases, complete oxidation to red lead is not effected, the lower oxides of lead being removed from the product, preferably after separation of the sand, by treatment with 30 per cent acetic acid.  The solution obtained is worked up into solid lead acetate.
Patent GB-1387912-A (GB)
Title: Magnetically suspending a vehicle relative to a portion of track
IPC: B61B13/08
Filed: 1972-04-28
Abstract: 1387912 Electromagnetic levitation system SIEMENS AG 28 April 1972 [30 April 1971] 19954/72 Heading B7L In a railway system having a vehicle (of which a longitudinal side 11 is shown in Fig. 3) which travels along a portion of track 12 in suspension by electromagnetic levitation, the vehicle has magnetic field producing means including a superconductor exciter winding 1 arranged to induce a substantially sinusoidal voltage in each of a plurality of short-circuited conductor loops 8 provided along the track 12. The exciter winding 1 is a distributed winding having, disposed along the direction of vehicle travel, adjacent poles of opposite directions of magnetization. A screening winding 2 or a metal screening plate (16), Figs. 1 and 2 (not shown), is provided to screen the exciter winding 1 from the field due to currents induced in the conductor loops 8, the width or coil width of the plate (16) or winding 2 respectively being substantially equal to the coil width of the exciter winding 1. The screening winding 2 or plate (16) is disposed in a low-cooled zone of a cooling arrangement provided to cool the superconductor exciter winding 1. A further damper winding 3 of squirrelcage type or a metal damper plate is provided on the vehicle, this winding 3 or plate being of coil width or width respectively greater than the coil width of the exciter winding 1 and being disposed in an ambient temperature region. In the input to the exciter winding 1, there are provided a superconductor choke coil 6 and an ohmic resistor 4 adjustable by an exciter current control device 5. The short-circuited conductor loops 8 along the track may be in the form of a squirrel-cage winding (7), Figs. 1 and 2 (not shown).
Patent GB-622662-A (GB)
Title: Device for the protection of the cathodes of electrolytic cells
IPC: C25B15/00
Filed: 1946-07-04
Abstract: 622,662. Electrolysis. KREBS & CO., KOMMANDITGES. July 4, 1946, No. 19980. Convention date, Nov. 16, 1945. [Class 41] Apparatus for the decomposition of an alkaline chloride by electrolysis comprises one or more electrolytic cells each provided with an auxiliary anode or anodes, the arrangement being such'that if the operation of any cell is to be stopped temporarily for cleaning or other purposes, the cell is short-circuited or disconnected from the main current supply and connected by way of the auxiliary anode to another source of current which is at a low potential.
Patent GB-870662-A (GB)
Title: Rotor-shaft connection
IPC: F04C5/00
Filed: 1958-06-23
Abstract: 870,662. Securing impellers &c. on shafts. JABSCO PUMP CO. June 23, 1958 [Sept. 3, 1957], No. 20064/58. Class 80 (2). [Also in Group XXVI] A shaft 26 is provided with two diametrically opposite flats 40 one of which is engaged by a radial inwardly directed, axial projection 42 on a surrounding sleeve 32, the two edges of the other flat 40 engaging the inner surface of the sleeve. When the rotor and shaft tend to turn relatively to each other, the projection 42 and the two edges of the opposite flat 40 engage frictionally with their coacting parts, to prevent relative axial movement therebetween. As shown the sleeve 32 is bonded to the flexible impeller 36 of a rotary pump. The connection between the sleeve 32 and the shaft 26 enables the impeller 36 to be readily withdrawn axially and replaced by another.