baber/WOPTO huggingface dataset:
Patent GB-1262024-A (GB)
Title: A current-limiting arrangement
IPC: H01F6/02
Filed: 1970-06-25
Abstract: 1,262,024. Excessive current protection. SIEMENS A.G. 25 June, 1970 [26 June, 1969], No. 30974/70. Addition to 1,163,027. Heading H2H. [Also in Division H1] An electrical current limiting arrangement has two parallel connected windings arranged so the resultant of the magnetic field is substantially zero at normal operating currents. One of the windings 1 consist entirely or partially of a superconductive material and has a critical current strength higher than the normal operating current and a preferably adjustable choke coil 5 connected in series. With a current which is lower than or equal to the critical current substantially same voltage drop is set up across the choke as across the second winding but when the current in the one winding exceeds the critical current it changes to a normally conductive state whereupon the inductance of the arrangement is increased. The windings, which are preferably tightly coupled to reduce stray fields, are enclosed in a heat insulating housing which is partly filled with a coolant e.g. liquid helium or nitrogen circulated through connections 4. Above the critical current, winding 1 rises to a relatively high resistance value so that most of the current is diverted into winding 2 the inductance of which is increased thus limiting the current flowing in a main circuit 8 and hence reducing the current which is broken by a circuit breaker 9. Winding 2 may consist of aluminium or copper or may alternatively consist of superconductive material having a critical current higher than that of winding 1 and arranged so that it may remain superconducting above the critical value. The end portions of winding 1 may be made of normally conducting material., The choke 5 may be air cored with taps, or have an adjustable iron core with a large air gap. A three phase arrangement is envisaged in the Specification which is stated to be especially suitable for protecting superconducting A.C. cables fed directly from generators without the interposition of transformers.
Patent GB-938152-A (GB)
Title: New metalliferous ortho: ortho-dihydroxy-azo-dyestuffs and process for their manufacture
IPC: C09B45/22
Filed: 1960-09-08
Abstract: The invention comprises metalliferous azo dyestuffs of the general formula <FORM:0938152/IV(a)/1> in which X represents an alkyl group containing at most 9 carbon atoms or a phenyl, phenylalkyl or cyclohexyl group or a chlorine atom, Y represents a hydrogen atom or an alkyl group containing at most 6 carbon atoms, Z represents a hydrogen atom or a methyl group and Me represents an atom of copper or nickel and a process for the preparation thereof wherein an azo dyestuff of the general formula <FORM:0938152/IV(a)/2> wherein X, Y and Z have the meanings given above and A represents a hydroxyl or methoxy group is treated with an agent yielding copper or nickel. The metal free dyes are prepared by conventional procedures and metallized before or after purification, e.g. in the coupling mixture.  Examples are furnished.  The dyes are used to dye anodized aluminium (see Group XXXVI).
Patent GB-945968-A (GB)
Title: Ion exchange resins
IPC: C08F8/00
Filed: 1961-08-29
Abstract: Ion-exchange resins are prepared by copolymerising an N-vinylimide of a polycarboxylic acid with a cross-linking monomer containing at least two non-conjugated vinyl or vinylidene groups, the cross-linking monomer being copolymerized in amounts of from 1 to 40% calculated on the total amount of monomers, and subsequent saponifying of the copolymer obtained.  Specified comonomers are divinyl benzene, divinyl toluene, trivinyl benzene, trialkyl cyanurate, divinyl ether, 1-3-5-hexahydrotriacrylyl-S-triazine, ethylene glycol dimethacrylate, ethylene glycol diacrylate, divinyl sulphide, divinyl sulphone, diallyl phthalate, diallyl maleate and diallyl ether, while the following N-vinyl derivatives are given, the phthalimide, succinimide, glutarimide, maleinimide, hexahydrophthalic - acid imide, D 4- 1 - tetrahydrophthalic acid imide, and the naphthalic acid imide. There may be used radical-forming catalysts such as benzoyl, acetyl, lauroyl, 2-4-dichlorobenzoyl, acetal-benzoyl, propionalbenzoyl peroxides, t-butyl, cumene and p-methane hydroperoxides, t-amyl peroxide, methylethyl ketone peroxide, potassium or ammonium persulphates, hydrogen peroxide, diethylpercarbonate, dipropyl percarbonate, alkali metal percarbonates, perborates and phosphates as well as azodiisobutyric acid dinitrile.  Bulk suspension or solvent e.g. benzene, toluene, xylene, dichlorodiethyl ether, dioxane and chlorinated hydrocarbons processes may be used.  The product may be produced as a bead polymer with a sponge structure by copolymerizing in the presence of an organic liquid solvent for the monomer but non-solvent for the polymer e.g., petroleum fractions, aliphatic or cycloaliphatic alcohols, aliphatic nitro compounds and ethers.  A third comonomer may also be present e.g., styrene, alpha-methyl styrene, vinyl toluene, vinyl naphthalene, vinyl chloride, acrylonitrile, styrenes halogenated on the nucleus and esters of acrylic, methacrylic and vinyl sulphonic acid. Saponification may be carried out with sodium, potassium or barium hydroxides, lime water, hydrazine, organic amines, alkanolamines, hydrochloric, sulphoric, and phosphoric acids. The products may be chloromethylated treated with dimethyl sulphate, treated with formic acidformaldehyde mixtures or may be quaternised. Specifications 885,719, 894,391 and 900,307 are referred to.
Patent GB-299475-A (GB)
Title: Improvements in or relating to the directive transmission or reception of sound or other wave energy
IPC: H04R3/00
Filed: 1928-10-27
Abstract: 299,475. Electroacustic Ges. Oct. 27, 1927, [Convention date]. Determining bearings acoustically; locating sounds.-Relates to electric retardation lines for enabling the time-intervals between the arrival of a sound wave at detectors e<1>, e<2>, e<3>, Fig. 4, to be compensated so that the resulting electrical impulses reach the telephone receiver T simultaneously. The Specification refers to arrangements in which a separate retardation line is provided for each detector, the numbers or dimensions of the sections being different in the different lines. According to the invention a single line of equal sections is provided, the circuits of the detectors e<1>, e<2>, e<3> beng tapped off the line at different points. Thus the detector e' is directly connected to the telephone circuit T while the detectors e<2>, e<3> are connected to it through brushes l<1>, l<2>, rings s<1>, s<2>, and parts of the line, the connections between the contact studs being such that the brush l<2> takes in twice as many line sections as the brush l<1>. A resistance W equal to the characteristic impedance of the line is added to prevent reflection. In the modification shown in Fig. 5 the three detectors are equally spaced and are connected to three equally inclined wipers l<1>, l<2>, l<3>. The line comprises the sections shown together with an opposite similar semicircle of sections, opposite contact studs being connected together in pairs. The condensers are shunted by resistances adapted to compensate for the relative weakening of the impulses. In a modification (Fig. 6, not shown) amplifiers and condensers are associated with the detectors e<1>, e<2>, e<3>. To prevent short-circuiting when a wiper is passing from one contact-stud to the next the wipers or the contact studs may be divided into parts separated by resistances (Figs. 5a, 5b, not shown). The telephone and detectors may be replaced by a generator and transmitters when the apparatus is used for the transmission of sound.
Patent GB-1149240-A (GB)
Title: Improvements relating to devices for testing coils or testing for the presence of a magnetic field
Inventor: WHITHAM BRIAN
IPC: G01R31/72
Filed: 1965-07-22
Abstract: 1,149,240. Testing coils for short circuits; locating magnetic bodies. BRITISH AIRCRAFT CORP. Ltd. July 22, 1966 [July 22, 1965], No.31324/65. Headings G1N and G1U. A probe circuit for testing coils to indicate whether one or more turns are short circuited, or for detecting the presence of magnetic material, comprises a battery powered transistor oscillator which includes a probe transformer 3 whose windings are placed in concentric arrangement, inside or outside, the windings of the coil to be tested. A winding on the transformer energizes a neon 6. The circuit includes a switch 5 and a sensitivity control 7, which is adjusted so that the neon just lights in the absence of a test coil when the circuit is switched on. A short circuited turn or the presence of magnetic material causes the neon to flicker or to be extinguished.
Patent GB-172843-A (GB)
Title: A new or improved locking device for a differential transmission gear
IPC: F16H48/30
Filed: 1920-11-05
Abstract: 172,843. Vulcan Motor & Engineering Co. (1906), Ltd., and Grinham, E. G. Nov. 5, 1920. Balance gearing is positively locked by sliding a shaft longitudinally by a threaded member engaging that shaft. The ends of vehicle part axles A, A<2>, which have splines A<3> to engage and carry the balance gear, have dog clutch ends A<4>, which do not project radially. The shaft A has a splined connection A<5> with a road wheel hub B so that it can slide to close the clutch A<4> and lock the gear. A screw C engaging a threaded hole A<6> in the shaft end has a plain part C<2> held by a cap D. The shaft A is moved bv turning the screw C by a spanner applied to the outer end C<5> of the screw. The shaft A<2> may also be movable.
Patent GB-299717-A (GB)
IPC: H01B5/10
Filed: 1928-10-29
Abstract: 299,717. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Oct. 29, 1927, [Convention date]. Cores for cables.-A hollow conductor for use in the transmission of power at high voltages is built up of twisted or untwisted wires a having the forms shown in Figs. 1, 3 and 4. The wires a are held in position by a flat ribbon b wound round them in a large pitched spiral. The assembled conductor may be drawn, or rolled to press the ribbon b into the conductor surface. In a modified construction, the wires a are formed of convex-concave cross-sectional outline, being drawn, after assembly, through a drawplate so that the wires project into one another. The external ribbon b may then be wound.
Patent GB-313451-A (GB)
Abstract: 313,451. British Celanese, Ltd., (As. signees of Whitehead, W.). June 11, 1928, [Convention date]. Addition to 282,036, [Class 2 (iii), Dyes &c.]. Moistening and treating filaments, yarns, and the like. The Specification as open to inspection under Sect. 91 (3) (a) comprises the permanent colouration, and in some cases the simultaneous lubrication, of filaments, yarns, and the like in general, while they are travelling from one point to another by the application of a solution of a colouring matter in an organic solvent or a mixture of such solvents. Suitable solvents are those referred to in the parent Specification, and the dihydric or polyhydric alcohols or their ethers or esters referred to in Specifications 308,173, and 313,450, [Class 2 (iii), Dyes &c.]. In using a hygroscopic solvent it is preferred to add a quantity of water equal to the maximum amount which the solvent tends to absorb from .the atmosphere, thus avoiding changes of volume, viscosity, or concentration of the dye solution, and thickeners such as starch, gum arabic, or gum tragacanth may be added in some cases. The solution of the colouring matter may be applied by means of a wick or roller dipping into the solution in a trough and contacting with the yarns or filaments as they pass from one package to another, or during textile operations such as cap spinning, flyer spinning, or ring spinning. Alternatively, the yarns or filaments may pass through the trough. The application to the colouration of filaments, yarns, etc. of regenerated cellulose silk, wool, flax, and cotton is specified. The application to such fibres does not appear in the Specification as accepted which is restricted to the colouration of filaments, yarns, etc. made of or containing cellulose esters or ethers.
Patent GB-505965-A (GB)
Title: Apparatus for the manufacture of glassware
IPC: C03B9/22
Filed: 1937-10-13
Abstract: 505,965. Glass manufacture. KENT-OWENS MACHINE CO. Oct. 13, 1937, No. 31419/38. Convention date, Nov. 2, 1936. Divided out of 503,921. [Class 56] A machine of the suctiongathering type for making hollow glassware comprises a number of mould units which rotate about a central column, and means for oscillating the column in a vertical plane in order to dip each parison mould in the molten glass as the mould unit passes the gathering point. The frame or turret that carries the mould units rotates about a hollow column 75 secured to a base 34; and the base is mounted on a truck 24 movable along rails 22. A system of levers 32, 33, pivoted at the ends of the truck, are connected by a nut 30 on a screwed shaft 29. This shaft can be rotated by a motor 42 to raise or lower the turret to adjust the parison moulds to the correct level for dipping into the molten glass: The base 34 is pivoted at one end to the levers 32 by pivots 36. A cam 40, secured to a shaft 41 journalled in the other end of the base, rests on a ring 38 mounted in ball bearings on a shaft 37 carried by the levers 33. The cam-shaft 41 is rotated by a shaft 39 which is driven by a drive wheel 51 through a gear box 54. This gear box is also connected to the rotating turret, so that the base 34 is oscillated in timed relation with the rotation of the turret. The movement of the base oscillates the column 75 in a vertical plane and dips the parison moulds iuto the molten glass during the gathering period. The machine may also include a cylinder 68 which is pivoted to the truck 24 at 69, and its piston rod is pivoted at 71 to the base 34. The cylinder may be supplied with air under constant pressure to support part of the weight of the machine. The pressure of the air may be varied, however, in timed relation with the rotation of the cam 40, or the cylinder may be used alone instead of the cam to oscillate the base 34. The mould units and their operating mechanism may be of the kind described in Specification 503,921.
Patent GB-685927-A (GB)
Title: Improvements in high voltage electrical circuit breakers
IPC: H01H33/00
Filed: 1949-12-07
Abstract: 685,927. Oil-break switches; gas-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd., COX, H. E., ROXBURGH, A., TRENCHAM, H., and POLLARD, A.H. Feb. 16,1951 [Dec. 7, 1949], No. 31427/49. Class 38 (v) A circuit-breaker comprises a number of gas-blast series-connected breaks each bridged by an impedance and in series with a liquid-immersed isolator. The latter comprises fixed contacts 25, 26 adapted to be bridged by a road contact 27, the contacts being arranged in an insulator 23 mounted on a metal casing 11 on supporting insulators 12. The seriesbreaks are arranged in two columns 14, 15 each comprising supporting insulators 16, insulators 18 containing the gas-operated contacts, and insulators 19 containing the impedances. The two columns are arranged on a pressure-gas tank 10 mounted on further insulating pillars 12. The isolator may be operated after the series breaks 18 or may be operated alone to break load or magnetising currents. Specifications 561,157 and 683,804 are referred to.
Patent GB-845888-A (GB)
Title: Device for reciprocating a thread-guide in centrifugal spinning apparatus
IPC: D01H1/08
Filed: 1956-10-16
Abstract: 845,888. Centrifugal spinning &c. machines for threads. RUMANIAN MINISTRY FOR LIGHT INDUSTRY, FIRST DEPUTY MINISTER OF. Oct. 16, 1956 [June 27, 1956], No. 31502/56. Class 120 (2). A thread traversing device for a centrifugal spinning machine has its movement controlled by two cams, both continuously rotated and one reciprocated by the other. The thread guide is reciprocated by a shaft that carries a sprocket wheel 18 driven by a chain 171 to which a bushing 13 is attached. The bushing 13 is freely slidable on a rod 1 under the influence of a cam 8 driven by reduction gearing. The rod 1 is itself reciprocated by a cam 5 and carries a casing 7 and the cam 8 so that the bushing 13 has a principal movement upon which a secondary movement is continuously imposed.
Patent GB-537043-A (GB)
Title: Improvements in or relating to tube groups or sections, more especially for steam generators
IPC: F22B37/14
Filed: 1939-12-05
Abstract: 537,043. Forced flow steam boilers. SULZER FRERES SOC. ANON. Dec. 5, 1939, No. 31528. Convention date, March 23. [Class 123 (ii)] The tubes of a once-through boiler or like heat exchanger are connected in parallel and arranged in two groups A, B placed side by side and having equal heating surfaces, each group being subdivided into five parts a-e in the direction of flow of the heating gases. Each tube has layers in parts a, b and e of one group and layers in parts c, d of the other group, the layers being so arranged that the sum of the heat taken up in the separate layers is the same for each tube.
Patent GB-975378-A (GB)
Title: Cement additives
IPC: C04B18/04
Filed: 1962-08-17
Abstract: Up to 1% of a leach salt is added to cement. The leach salt is defined as a mixture of salts obtained from the mother liquor in the Bayer alumina process, and comprises sulphates, phosphates, vanadates and fluorides of iron, sodium and aluminium.
Patent GB-387443-A (GB)
Title: Improvements in and relating to lamps for flood lighting, advertising and like purposes
IPC: F21Y103/00
Filed: 1931-11-16
Abstract: 387,443. Luminous signs. SMITH, H. O., 1, Tyndall Street, Surrey Hills, near Melbourne, Australia. Nov. 16, 1931, No. 31768. Convention date, Nov. 18, 1930. [Classes 3 (i) and 3 (ii).] A lamp for use in advertising &c. has a linear source of light 4 disposed along the focal axis 3 of an elongated parabolic reflector 1, and is provided with plane reflectors 8 at each end of the parabolic reflector, so as to reflect light reflected in endwise directions from the parabolic reflector on to the surface to be illuminated. The source of light is an electric lamp or lamps with a linear filament or filaments, or a neon tube. A reflector 9 inclined to the surface 7 may be provided as shown in Fig. 1 so as to reflect back on to the surface 7 light reflected up from the latter. This additional reflector may extend from the upper edge of the parabolic reflector to the edge of the illuminated surface, which is made translucent. In the form shown in Fig. 3, inclined translucent panels 10 extend from the edges of the reflector 1. In another form, Fig. 5, two parabolic reflectors 1 are provided at opposite edges of the surface 7, and the lamps 4 may be of the same or different colours. In the latter case, they may be lit either alternately, or separately, and then simultaneously. The illuminated surfaces may carry advertisements or signs.
Patent GB-869814-A (GB)
Title: Improvements in or relating to electronic storage tubes
IPC: H01J31/18
Filed: 1957-10-11
Abstract: 869,814. Cathode-ray tubes. STANDARD TELEPHONES & CABLES Ltd. Oct. 11, 1957 [Oct. 16, 1956], No. 31786/57. Class 39(1). In a reading and writing cathode-ray tube with a perforated storage target 6 and a scanning and writing gun 4, a flood gun 3 on the axis of the tube and a phosphor viewing screen behind the storage target, the flood beam is first diverged by a negative lens, between metal cylindrical or wall coating electrodes 10 and 11, and then converged by a double positive lens, between electrodes 11 and 12 and electrode 12 and grid electrode 5, so that the beam impinges normally on the storage target. Grid electrode 5 is at the highest potential of the tube and serves to collect secondary electrons emitted from the storage target. Target 6 has an electron transmissivity of 30 % to 50 % and is provided on the gun side with a layer of semi-conducting material such as silicon monoxide. Flood gun 3 is of the pierce type with dish-shaped cathode 3b and conical anode 3c. Electrode dimensions are given.
Patent GB-730309-A (GB)
Title: Water-cooled furnace dampers, doors and like movable partitions
Inventor: EICHLER BERTHOLD
IPC: F23M7/00
Filed: 1952-12-16
Abstract: 730,309. Water-cooled furnace dampers and doors. ALEXANDER & CO., Ltd., H. Dec. 16, 1953 [Dec. 16, 1952], No. 31811/52. Class 51 (1). A damper or other movable partition comprises an assembly of refractory elements 2 carried by a tubular metal support so as to provide a working surface consisting entirely of refractory material, the support having at least one lengthwise intermediate member 3 passing through the body of the assembly to join a further member 4, 5, extending within the body of the assembly and adjacent the peripheral edge thereof, inlet and outlet connections being provided for coolant water to be circulated throughout the support. As shown in Fig. I the invention is applied to a sliding damper disposed in a flue: modifications are described in which the damper is of the "butterfly" type; in further examples the invention is applied to a sliding door and to a curtain wall.
Patent GB-520897-A (GB)
Title: Improvements in or relating to belt shifters for stepped cone pulleys
IPC: F16H7/22
Filed: 1938-11-03
Abstract: 520,897. Variable-speed belt gearing. GRAY, R., and STEWART & McKENZIE, Ltd. Nov. 3, 1938, No. 31840. [Class 80 (ii)] A belt shifter for use with stepped cone pulleys, comprises a guide 11 arranged parallel to a generatrix of the cone, a slide 12 mounted for displacement on the guide, and a belt-pusher fork 13 comprising a plate 15 to which are secured limbs 16, 17 bridged by bolts 18, 19 on which are mounted rollers 20, 21. The rollers and limbs define a slot 22 for passage of the belt 14. The plate 15 has a flange 23 pivoted at 24 near the trailing limb 17, and a slot 25 through which passes a pin 26 on the slide 12. An adjustable stop to limit the tilting movement is provided by a screw 27 adapted to engage an abutment 30 on the slide 12. When the slide is moved to the left to shift to an up-step, the fork 13 tilts about the pivot 24 into the position shown and imparts the requisite twist to the belt. No titling occurs for a down-step shift. Specification 498,778 is referred to.
Patent GB-920180-A (GB)
Title: Method for making self-aligning bearings
Inventor: GLAVAN RICHARD
IPC: F16C23/08
Filed: 1960-09-16
Abstract: 920,180. Bearings. STEPHENS-ADAMSON MFG. CO. Sept. 16, 1960, No. 31950/60. Class 12 (1). [Also in Group XXII] A self-aligning ball-bearing is made (see Group XXII) with an undivided housing 12 which is deformed about the spherical periphery of the outer, race 15 to produce a coacting spherical surface on the housing. Retaining rings 30, 31 for the balls may be riveted or clamped together within sealing rings 32, 33. Nodular &c. cast-iron, aluminium-bronze &c. may be used for the housing 12, which may be cast or forged or made from sheet (Figs. 13 and 16, not shown).