baber/WOPTO huggingface dataset:
Patent GB-880742-A (GB)
Title: Improvements in monitoring circuit for 3-phase supply systems
IPC: H02H3/253
Filed: 1958-10-27
Abstract: 880,742. Automatic liquid level control systems. TELEMECANIQUE ELECTRIQUE. Oct. 27, 1958 [Nov. 29, 1957], No. 34384/58. Class 38 (4). [Also in Group XXXVII] An arrangement for protecting against incorrect phase rotation or phase failure (see Group XXXVII) includes transformers 8, 9 with secondary windings 10, 11 and is arranged so that when winding 10 is short-circuited, winding 11 is open-circuited and the three-phase supply is normal, the voltage derived from the tapping of a potentiometer 12, and applied to the control grid 14 of a thyratron 15 is sufficient for the thyratron to fire and energize the coil 18 of a relay controlling the closing coil 21 of a contactor controlling a pump motor 29. When the system is at rest, the winding 10 is shortcircuited provided an electrode 31 in a well 27 is immersed, and the winding 11 is short-circuited by a circuit extending through auxiliary contacts 36 of the contactor and the immersed electrode 35 in a tank 28. Should the level in the tank fall below the electrode 35, then the winding 11 is open-circuited, the thyratron 15 fires and the motor-pump 29, 26 is started to pump water into the tank 28. The closure of the contactor causes the contacts 36 to open, so that the water in the tank has to reach an electrode 34 before the winding 11 is again short-circuited to stop the motor. Should the level of the water in the well fall below an electrode 32 before the tank 28 has been filled, then winding 10 ceases to be short-circuited and the pump is stopped. In a modification, Fig. 5, not shown, the winding 11 is omitted and the tank is provided with a float switch having its contacts in series with the winding 10.
Patent GB-605300-A (GB)
Title: Improvements in or relating to electrical resonance chambers
IPC: H01P7/06
Filed: 1945-12-19
Abstract: 605,300. Electric resonators. WESTERN ELECTRIC CO., Inc. Dec. 19, 1945, No. 34437. Convention date, Dec. 28, 1944. [Class 40 (viii)] [Also in Group XL (c)] A resonant cavity 1, particularly for use in an echo box for testing pulse transmission, discriminates against undesired modes of oscillation, and its natural frequency is varied cyclically about the working frequency. The cavity is of metal or of dielectric with a conductive coating 27, and is tuned by a piston 4 which is reciprocated by an eccentric 6 on a motor 7, the mean frequency being adjustable by means of a screw 15 acting on a frame plate 8 pivoted at 9. The tuning-piston 4 comprises a body 23 of phenol fibre or other dielectric with a conductive coating 24, and a peripheral gap 28 permits oscillations of all modes except TEom, which have a node in this region, to escape into the chamber 26 and be dissipated in the dielectric walls, which may be painted with dissipative material such as aquadag. TE modes other than TEo4 are similarly dissipated by the provision of three circular slots 29, 30, 31, at the nodes of the TEo4 mode. A second piston 33 is provided with a ball-and-socket joint 36 and four adjusting-bolts 37 so that its plane may be accurately adjusted. The resonator is coupled to a dipole 44 through a retractile coupling loop 38 which extends into the cavity when the solenoid 41 is energized upon operation of a switch 20, which also switches on the motor 7 to reciprocate the tuning-piston 4. When the natural frequency agrees with that of a pulse received through the dipole 44, the resonator rings and thereafter causes the dipole 44 to reradiate for a short period. The cylindrical conductor 27 may be divided into rings, Figs. 3, 5 (not shown), so that all modes other than TEo are damped by leakage of radiation between the rings, and the bottom plate 34 may have a central circular depression, or a prominence, Figs. 3, 4 (not shown), of such radius and depth as to favour the desired mode. For selecting a TEo1n mode where n is of the order 5 to 25, a conducting plate on the underside of the piston 4 may be separated from the cylindrical wall by a relatively wide gap, and have a central circular aperture, Fig. 6 (not shown).
Patent GB-749731-A (GB)
Title: Improvements relating to bridging plugs for bore holes
IPC: E21B33/12
Filed: 1953-12-10
Abstract: 749,731. Borehole plugs. BRITISH PETROLEUM CO., Ltd., [formerly ANGLO-IRANIAN OIL CO., Ltd.], CLARK, A., and GIBSON, J. M. Nov. 24, 1954 [Dec. 10, 1953], No. 34458/53. Class 85 A plug for boreholes has an outer plug 10 formed by a number of longitudinal sections of wood, or other destructible material, held together by copper wire wound in grooves 12 although spring coils or rubber bands may be used. Each section is attached to the flange on a drill pipe 15 by a wood screw 14. An inner wood plug 19 having a tapered portion 20 and a cylindrical portion 25 fits in a similarly shaped axial bore in the outer plug and is held in position by a wooden dowel pin 18. A brass shear pin attaches a fishing pin 29 to the upper end of the inner plug 19 by which the plug 19 is pulled upwards forcing the sections of the outer plug 10 outwards against the wall of the hole and breaking their screw connections with the pipe 15. When sufficient tension is applied to the fishing pin 29 the shear pin breaks and the pin 29, and also the tube 15, can be withdrawn. The plugs may be drilled out.
Patent GB-1019406-A (GB)
Title: Concentricity and perpendicularity gauge
IPC: G01B5/245
Filed: 1964-08-24
Abstract: 1,019,406. Concentricity and perpendicularity gauges. Aug. 24, 1964, No. 34494/64. Heading G1M. In a gauge for measuring concentricity and perpendicularity there is provided a housing 14 having an annular pilot portion 24 and three bearing bores 44, 46, 48 mounting motion transmitting rods 56, 106, 174, and having indicator dials 16, 18, 20 mounted on the housing whose plungers 54, 104, 168 are in operative engagement with the rods 56, 106, 174, an internal surface concentricity feeler 76 movably mounted in engagement with rod 56, an external concentricity feeler 156 in operative, engagement with rod 106, and a perpendicular surface contacting feeler portion 188 engageable with surface 86. Rods 56 and 106, are in operative contact with pivotted feelers 68 and 148 respectively, whereas rod 174 contacts the workpiece directly at 88. The feeler 148 is urged by a spring 158 to a position such as to prevent damage during insertion into the workpiece. Pushbutton means 136, (see Fig. 1, not shown) releases the feeler when it is required for a gauging test. The gauge is fitted into the workpiece W by an expansible arbor 22, comprising a head 200 mounted on a stem 202 positioned in counterbore 203 of the bore 24. The head 200 carries a pilot portion 24 which is expanded hydraulically through rotation of handle 208. The stem 202 is locked by engagement of the end 228 of a spring-loaded plunger 234 in a notch 226. In operation, the gauge is lowered on to the workpiece W, depressing pushbutton 136 to withdraw the tip 156 out of contact with the workpiece W. The arbor is then expanded to grip the reference bore 82. Subsequently the holder 12 is rotated by handle 32 causing the three gauges to be operated simultaneously i.e. tip 78 traces the internal surface, tip 156 traces the external surface and tip 188 traces a path against the flange 86. These movements are recorded on the respective dials 52, 98, 166.
Patent GB-1020299-A (GB)
Title: Improvements in or relating to disazo disperse dyestuffs
IPC: C09B31/06
Filed: 1963-09-02
Abstract: The invention comprises disazo dyes of formula <FORM:1020299/C4-C5/1> wherein A is a benzene or naphthalene nucleus and R is a hydrogen atom or a methyl group. The dyes are prepared, by coupling diazotized 4 - amino - 3,21 - dimethoxy - 6,51 - dimethyl - 1,11-azobenzene with a hydroxy-benzene or -naphthalene carboxylic acid.  The dyes are used to colour polyethylene or polypropylene materials from aqueous dispersions in red and blue shades.
Patent GB-422976-A (GB)
Title: Liquid contents gauge for tanks
IPC: G01F23/00
Filed: 1933-12-08
Abstract: 422,976. Indicating liquid levels. BLACKBURN AEROPLANE & MOTOR CO., Ltd., Seaplane Base, and METCALFE, L. E., Fern Cottage, Skillings Lane, both in Brough, near Hull. Dec. 8, 1933, No. 34569. [Class 123 (i)] A liquid-fuel tank a is provided with a well a<1> to receive a buoyant body b extending the whole depth of the tank. The well a<1> is sufficiently deep to support the weight of the body b when the tank is empty. The upward pressure of the body b due to its immersion actuates a piston b<2> which transmits the pressure to a non-freezing liquid in a chamber cl and pipe c<3> leading to a Bourdon gauge. In a modification, Fig. 2, not shown, the pipe c<3> terminates in a sealed capsule in the chamber c<1>, and in another modification, Fig. 3, not shown, the pipe c<3> terminates in a compressible bellows resting on the body b. In another modification, Fig. 4, the varying buoyancy of the body e is transmitted to a pivoted lever e<1> acting on a capsule g which is connected by a pipe g<1> to the gauge.
Patent GB-869100-A (GB)
Title: New azo dyestuffs containing sulphonic ester groups
Inventor: FISHWICK BRIAN RIBBONS
IPC: C09B62/447
Filed: 1958-10-29
Abstract: The invention comprises water-insoluble mono- and dis-azo dyes of formula D-[-SO2(NX)n-1-A-O,SO2R]m where D is the residue of a mono- or dis-azo dye, A is an alkylene residue of 2 to 4 carbon atoms, R is an alkyl radical of 1-4 carbon atoms or a monocyclic aryl radical, X has the values of R or is H or A-O,SO2R, m and n are 1 or 2, provided that D, X, A and R are free from SO3H, COOH, SO2NH2, N-acylated sulphonamido and alkylsulphonyl groups.  The dyes may be made by treating a compound of formula D-[SO2(NX)n-1-A-OH]m with an acid halide of formula R SO2 Y where Y is a halogen atom or by conventional diazotization and coupling processes.  Specified for A are propylene, a , delta-butylene, trimethylene, b , g -butylene and ethylene the last group being preferred.  Methyl, ethyl, propyl, butyl, phenyl, tolyl and chlorophenyl are groups specified for R and X.  Representative of amines from which the diazo components are derived are:-aniline, p-aminobenzonitrile, m-aminobenzenesulphon- N- b -hydroxyethylamide, 4-amino- 3-chlorobenzenesulphon- N-(g -hydroxya -propyl) amide, 2-chloro-4-nitroaniline, 2-amino-5-nitrothiazole, r -aminophenyl-b -hydroxyethyl-sulphone and 4-amino-1-naphthyl-b -hydroxyethylsulphone.  Representative of specified coupling components are: m-(N, N-diethylamino) benzenesulphon-N-(g -hydroxy-a -propyl) amide, m-(N, N-dimethylamino)-benzenesulphon- N- b -hydroxyethylamide, p-cresol, N, N-diethyl-m-toluidine, 3-methyl-5-pyrazolone, 1- m- (b - hydroxyethylaminosulphonyl) - phenyl-3-methyl- 5-pyrazolone, m- (N, N- diethylamino) phenylb - hydroxyethyl sulphone and N- ethyl- N- b -cyanoethylaniline and 2- napthylamine- 6- and 1- naphthol- 5-sulphon- N-[b -(benzenesulphonyloxy)ethyl] amides. The dyes colour textile materials comprising natural and artificial fibres e.g. wool, silk, cotton, linen, regenerated cellulose, polyamides, modified polyacrylonitriles, aromatic p  polyesters and cellulose acetate.  An aqueous dispersion process is preferably used for dyeing.  The dyes are applied to nitrogenous fibres from a weakly alkaline, neutral or acid dye-bath.  Yellow to blue shades are obtained.  The dyes are especially of advantage in colouring polyamide textile materials. Examples are provided of the preparation of mono- and dis-azo dyes and their use in various colouring processes.
Patent GB-946067-A (GB)
Title: Process for enamelling
IPC: C23C18/31
Filed: 1961-09-27
Abstract: A process for pretreatment of cold-rolled steel sheets prior to enamelling comprises the steps of acid cleaning, rinsing and immersion in an acidic solution of a complex-bonded antimony salt to give an antimony coating, preferably about 4m  thick. Neutralization of the coating with a solution of borax and sodium nitrite is followed by applying an enamel slip free of adhesive oxides (i.e. Ni and Co oxides) and firing at 560-900 DEG  C.ALSO:An acid cleaned, water rinsed, cold rolled steel sheet is immersed in an acidified solution of a complex-bonded antimony salt, (e.g. SbCl3 or Sb2O3 in tartaric acid). The treating bath may contain 10 g.p.l. of antimony trichloride and 14.5 g.p.l. of tartaric acid and should give a coating of 5-10 mg. Sb/dm2 with a preferred thickness of about 4m . The surface is then neutralized with a solution of borax and sodium nitrite and then coated with enamel.
Patent GB-1483978-A (GB)
Title: Jet powered watercraft
IPC: B63B1/22
Filed: 1975-08-22
Abstract: 1483978 Jet powered water-ski craft STILL WATER PROPERTIES NV 22 Aug 1975 [6 Sept 1974] 34965/75 Heading B7A A water-jet powered craft comprising a buoyant hull 12 which includes an engine compartment 44 has a steerable front ski assembly 14 and a rear ski assembly 22. The rear ski 24 is under the engine compartment and has an inlet opening communicating with the impeller 36 of the jet pump which is located over the rear ski.
Patent GB-502927-A (GB)
Title: Refrigerating apparatus
IPC: F25D21/14
Filed: 1937-12-18
Abstract: 502,927. Refrigerators. GIBSON ELECTRIC REFRIGERATOR CORPORA TION, GIBSON, C. J., and TOUBORG, J. Dec. 18, 1937, No. 35091. [Class 29] Means for collecting moisture during defrosting of a cabinet evaporator of the flat plate type 12, located at or just below the top of the storage space, comprises a pair of dished drip pans 15, 15a with flanged centre, openings 16, 16ct and with sumps 22, 23, 22a, 23a, separated by dams 24, 24a and draining through holes 22a into a deep receptacle of small horizontal section placed on a shelf below. A #-shaped baffle 20 is mounted on the evaporator above the centre openings, through which a circulation of air is possible. The evaporator and drip pans are substantially of the full area of the cabinet, and the evaporator may comprise a plate element with tubular members 13 below it, as set forth in U.S.A. Specification 2,009,910.
Patent GB-1030046-A (GB)
Title: Palladium diacetate and method of preparing the same
IPC: C07C53/10
Filed: 1964-08-27
Abstract: The invention comprises solid, crystalline palladium diacetate and adducts thereof with benzene and amino compounds.  The crystalline diacetate is prepared by treating an aqueous solution of soluble palladium salt with an alkali at below 85 DEG  C. to precipitate hydrous palladium oxide, separating, partially drying and treating with glacial acetic at a temperature below 85 DEG  C. to form palladium diacetate which is then separated.  Crystalline adducts are formed with pyridine aniline and benzylamine and noncrystalline adducts with quinoline, 2-aminopyrimidine and benzidine.  Palladium salts used as starting materials in the examples are palladium chloride, sodium tetrachloropalladate and palladium nitrate.
Patent GB-767299-A (GB)
Title: Improvements relating to instructional or amusement devices
Inventor: PAGE HILARY FISHER
IPC: A63F9/00
Filed: 1953-12-18
Abstract: 767,299. Education appliances. HILARY PAGE SENSIBLE TOYS, Ltd. Dec. 17, 1954 [Dec. 18, 1953], No. 35299/53. Class 146(2). An instructional or amusement device comprises a set of pieces each in the form of a hollow thin walled block 7 with a letter, word or the like 8 on its upper surface, and at least one opposite pair of sides formed with complementary dovetail slot 9 and tongue 10. The block 8 may be made by a moulding process to integrally include the letter &c., and the slot and groove may be formed to have a slight taper to prevent disintegration of a built-up structure of blocks when lifted.
Patent GB-656604-A (GB)
Title: Improvements in the automatic regulation of ionized gas or vapour discharge vessels
IPC: H02M7/15
Filed: 1947-12-31
Abstract: 656,604. Rectifying; automatic control systems for rectifiers. BRITISH THOMSONHOUSTON CO., Ltd. Dec. 31, 1947, No. 35375. Convention date, Aug. 5, 1941. [Classes 38 (ii) and 38 (iv)] A system for automatically regulating an electric discharge vessel 1 containing an ionized vapour and a control element such as an ignition electrode or a grid 9 has the control voltage therefor derived via an ohmic resistor 10 in series with the control windings 12, 121 of two, or more, saturable reactors, additional windings being provided thereon so as to make them dependent upon an electric quantity of a load circuit, e.g. output volts or load current. A reactor 11, regulating for constant voltage, has a winding 15, constantly excited from a D.C. source 22, and a winding 14, in opposition to winding 15, fed as a function of the output voltage across the D.C. output 6, 8 such that while the reactor 11 is not saturated, and is therefore capable of regulation, the reactor 11<SP>1</SP>, having a winding 14<SP>1</SP> fed as a function of the output current of the discharge vessel by means of a shunt 20, is fully saturated and therefore performs no regulating function and vice-versa. Variation of the output voltage varies the reactance of the reactor 11 and thus alters the instant in a cycle at which the discharge vessel begins to conduct so regulating the output voltage. When the reactor 11 has become fully saturated the reactor 11<SP>1</SP> desaturates and begins to operate in a manner similar to reactor 11 but regulating for constant current. The discharge vessel is thus regulated for constant voltage up to a given output current value after which it is regulated for constant current. The current regulation may not be continuous with the voltage regulation but may be separated therefrom by a portion of the natural characteristic of the discharge vessel, i.e. when both reactors are fully saturated and perform no regulating function. If desired, a fifth winding may be added to each reactor and energized such that each characteristic may either rise or fall instead of remaining constant. More than two saturable reactors, each controlling a different characteristic may be used. In a further embodiment the auxiliary windings 13, 13<SP>1</SP> may be replaced by a negative D.C. bias.
Patent GB-1327929-A (GB)
Title: Colour applicator for hair
Inventor: SPANEL A N
IPC: A45D19/02
Filed: 1971-07-28
Abstract: 1327929 Dyeing hair A N SPANEL 28 July 1971 [29 July 1970] 35565/71 Heading D1B [Also in Division C5] The invention comprises a dry-colour applicator for pressure colouring hair comprising a block of wax of substantial length and width having colouring material in intimate mixture therewith, the block having at least one edge portion extending from one side to an opposite side of the block to present at least one unobstructed substantially continuous surface for colour-stroking hair without a combing action, and an open ended enclosure within which the block is positioned for insulating the block from the seat of the hand and preventing transfer of colour to the hand during use. The wax block may contain triple pressed stearic acid paraffine, beeswax, carnauba wax, pigment, antifungal and antibacterial substances. Inorganic pigments are used e.g. carbon block, titanium dioxide, yellow ochre and burnt sienna. Preferred shapes of blocks are shown e.g. in Figs. (Figs. 1, 4, 9 and 10).
Patent GB-961673-A (GB)
Title: Circuit arrangement for producing exact rectangular pulses
Inventor: SCHOEPS KURT
IPC: H03K5/12
Filed: 1960-10-17
Abstract: 961,673. Valve pulse generating circuits. ZENTRALINSTITUT FUR KERNPHYSIK. Oct. 17, 1960, No. 35566/60. Heading H3P. A circuit for producing accurate rectangular pulses (Fig. 3f) comprises a first valve driven into conduction by a " needle " pulse (Fig. 3d) so as to charge the circuit capacitance and a second valve rendered conductive by a second needle pulse (Fig. 3e) to discharge the circuit capacitance and terminate the output pulse (Fig. 3f). The circuit provides pulses (Fig. 3f) having a rise time less than 5 nS and flat top having less than 2% overshoot or droop. Neutralizing arrangements are provided to prevent overshoot (such as is shown in Fig. 3g) due to the coupling of the needle pulse (Fig. 3d) via the inter-electrode capacitance of the charging valve. Fig. 1 shows a multivibrator 1 giving the waveform shown in Fig. 3a, which is differentiated to provide a pulse which drives a blocking oscillator 2 providing a pulse (Fig. 3b). This is passed by the cathode follower 4 to drive valve 6 heavily into grid current providing a pulse (Fig. 3d) at the grid of the charging valve 12 which is rendered conductive for the duration of pulse (Fig. 3d), charging the capacitance of valve 12 cathode circuit as shown in Fig. 3f. The grid/cathode capacitance of the charging valve is neutralized by a bridge circuit comprising a neutralizing capacitor 10 as explained in Fig. 2 (not shown). The end of the multivibrator waveform (Fig. 3a) is differentiated and used to control a blocking oscillator 3, providing the waveform (Fig. 3c) which is amplified by valve 7 and passed via transformer 9 to drive valve 13 into conduction, discharging the cathode capacitance of valve 12 and terminating the generated pulse (Fig. 3f). This pulse is amplified by valve 15, the anode load of which comprises a coaxial line termirated in its characteristic impedance by resistors 19, 20. The grid/anode capacitance of valve 13 may be neutralized by capacitor 11. Thyratrons may replace the vacuum valves shown. Pulse amplitude adjustment and limiting.- The amplitude of the output pulse across resistor 20 may be adjusted by variation of the negative supply - V2. Alternatively the screen voltage of the output valve 15 may be adjusted so as to control the amplitude at which limiting occurs,
Patent GB-1262405-A (GB)
Title: A rotary-anode x-ray tube
IPC: H01J35/10
Filed: 1970-07-22
Abstract: 1,262,405. X-ray tubes. SIEMENS A.G. 22 July, 1970 [23 July, 1969], No. 35600/70. Heading H1D. The anode of a rotary anode X-ray tube is provided with recesses which intercept any direct radial path from the axis of rotation to an annular target portion of the anode. In Fig. 2 the graphite anode 10 is provided with spiral slots 17 which terminate in radial slots 18 extending below the target area; the target 13 is seen only partly in Fig. 2 as it comprises a tungsten ring which fits into an annular slot provided in the opposite face of the graphite support member. When the target is a thin ring, Fig. 8 (not shown), the support may be provided with spiral recesses on each face which are interleaved with each other. When the target surrounds the circumference of the support like a tyre, the support may comprise separate elements; these may be in the form of spokes with the spaces between them forming the required spiral recesses (Fig. 7, not shown), or in the form of wedge-shaped members with chordal slots extending alternately from each edge (Figs. 9 and 10, not shown). In another arrangement (Figs. 3 and 4, not shown) the target comprises a molybdenum plate coated near its edge with a tungsten-rhenium alloy which forms the target portion, and spiral slots are provided in the central portion. In a further arrangement (Figs. 5 and 6, not shown) the target comprises a plate of tungsten alloyed with 0-1% iridium and its central part includes four staggered rings of circumferential slots.