baber/WOPTO huggingface dataset:
Patent FI-973520-A (FI)
Inventor: DRUML GERNOT
IPC: G01R31/02
Filed: 1997-08-27
Abstract: A process is disclosed for recognising a unipolar earth leakage in an output line of three phase mains driven with an arc suppression coil for earthing by resonance the neutral point. The process has the following steps: (a) a first pair of measurement values (Uo1, Io1) is formed at a first moment in time (t1); (b) the displacement voltage is modified at a second moment in time (t2) and a second pair of measurement values (Uo2, Io2) is formed at the second moment in time (t2); (c) the output earth admittance (Ya) is determined from both pairs of measurement values (Uo1, Io1; Uo2, Io2), as well as an asymmetric admittance (Yu) as inner admittance of a voltage source that feeds the parallel oscillating circuit made up of the arc suppression coil and earth admittance (Ya), and the thus determined values (Ya, Yu) are stored as reference values; (d) a third pair of measurement values (Uo3, Io3) is formed at a third moment in time (t3); (e) a failure admittance (Yf) is determined from the third pair of measurement values (Uo3, Io3) as inner admittance of a voltage source that feeds a parallel oscillating circuit made up of the arc suppression coil, earth admittance (Ya) and asymmetric admittance (Yu) by using the stored reference values (Ya, Yu); and (f) an earth leakage is indicated when the failure admittance (Yf) exceeds a predetermined value (K1).
Patent GB-829993-A (GB)
Title: Improvements relating to flameproof electrical equipment
Inventor: HOLLOWAY JOHN ASTLEY
IPC: H01H9/04
Filed: 1955-01-13
Abstract: 829,993. Switch cases; retractive switches. SIMPLEX ELECTRIC CO. Ltd. April 12, 1956 [Jan. 13, 1955], No. 1042/55. Class 38 (5). [Also in Group XXXVI] An electrical device, such as a switch, has its working parts in a flame-proof housing which has a jointing face adapted to engage a separate flame-proof terminal chamber. The switch 22 is mounted on a boss 21 of a cover-plate 19 of a housing 12a, with connections 23 passing tightly through insulating bushes 24 to the terminals 25 in the chamber 11, the joints between parts 12a, 19 and 11 being flameproof. An operating spindle 27 passes in a flame-proof manner through a bush 28 in a boss 16 of the housing 12a and carries a lever 31 engaging the switch dolly 26. The terminal chamber 11 has four apertures 41 to receive bosses 21, which apertures have cover-plates 12 when not in use. Each device may be arranged on its own individual terminal chamber 57, Fig. 4, which shows a push-button switch 48, the housing 12a having a pushbutton 53 and a detent 55 for preventing operation of or, alternatively, -return of the button 53. The electrical device may be an indicating or measuring instrument (Fig. 5, not shown), or an indicator lamp (Fig. 6, not shown).
Patent GB-546250-A (GB)
Title: Improvements in and relating to multi-break electric switching devices
IPC: H01H33/14
Filed: 1941-01-28
Abstract: 546,250. Gas-blast switches. AKT.-GES. BROWN, BOVERI, & CIE. Jan. 28, 1941. No. 1144. Convention date. Feb. 28, 1940. Addition to 530,971. [Class 38 (v)] The invention of the parent Specification is modified in that for obtaining uniform potential distribution, the high resistances bridging the individual breaks are of different magnitudes, the smallest being on the outside breaks, when these are most highly stressed, and being larger in the middle of the series. The smaller resistances on the outsides have a greater current-diverting effect.
Patent GB-231608-A (GB)
Title: Improvements in cabinet gramophones
IPC: G10K13/00
Filed: 1924-01-15
Abstract: 231,608. Simms, T. E., and Wolffe, J. Jan. 15, 1924. Cases with internal horns.-A cabinet gramophone comprises a cabinet 1 having a median horizontal partition 2 to support a motor 3 and turn-table 4, a sound chamber 9 extending across the top of the cabinet. and opening towards the front and a sound tube 7 extending around two. sides of the cabinet to connect the tone arm 8 with the sound chamber 9. The sound passage 7 comprises a cranked tube located in a compartment formed by vertical walls 6 spaced from the sides of the cabinet. A filing chamber for records is provided beneath the partition 2. The chamber containing the turn-table, may be lit by electric lamps.
Patent GB-265567-A (GB)
Title: Process for obtaining highly active substances from female internal secretory organs
Filed: 1927-01-14
Abstract: 265,567. Soc. of Chemical Industry in Basle. Feb. 2, 1926, [Convention date]. Medicines for internal use. - Extracts from female organs, or distillates from such extracts, such as an extract from ovaries prepared in accordance with Specification 226,372, are purified by treatment with a solution of alkali in water or an organic solvent with exclusion of oxygen. According to an example the ovary extract is dissolved in alcohol and, whilst maintained in an atmosphere of hydrogen, alcoholic potash is added. Excess of potash is neutralized bv introducing carbon dioxide, the alcohol is distilled off in a vacuum, and the active material in the residue is extracted with acetone, leaving the alkali soaps undissolved. The active product is obtained as an oil by evaporating the acetone.
Patent GB-1520697-A (GB)
Title: Method for preparing a hydrotreating catalyst having a controlled pore distribution
IPC: B01J21/04
Filed: 1977-01-12
Abstract: 1520697 Hydrotreating catalysts NALCO CHEMICAL CO 12 Jan 1977 [1 March 1976] 01182/77 Heading B1E [Also in Division C5] Catalysts are made by at least partially dehydrating a precipitated alumina, impregnating it with a solution comprising a compound of at least one of Co, Ni, Mo and W, (at least one of) the metal(s) being present as a salt of a polycarboxylic acid, forming and calcining to give a catalyst of reduced pore volume in the 100-1200 pore size range.
Patent GB-1459317-A (GB)
Title: Electro-magnetic contactor
IPC: H01H50/54
Filed: 1974-01-10
Abstract: 1459317 Electromagnetic contactors LA TELEMECANIQUE ELECTRIQUE 10 Jan 1974 [19 Jan 1973] 1292/74 Heading H1N In an electromagnetic contactor having an armature 2 connected to a contact holder slidable within a housing 1 having integral partitions 19, 20, 21 defining arcing chambers 14, 15, 16, the contact holder comprises two parts 6, 7, the part 6 being connected to the armature 2 and formed of arc-resistant plastics material. A first series of openings 8, 9, 10 in the part 6 contains bridging contacts 3, 4, 5 and their associated bias springs, whilst second openings 22, 23, 24, which alternate with the first openings, are elongated and each contains one of the partitions 19, 20, 21. The part 7 of the contact holder cooperates with a cover 13 of the housing to slidably guide the holder, and is therefore formed from plastics material having good anti-friction properties. Parts 6 and 7 are detachably interconnected, e.g. by resilient catches 27, the part 7, when in position, closing the first and second openings. As shown, co-operating lateral extensions 28, 30 on parts 6, 7 contain the movable contacts 29, 31 of two sets of open and closed auxiliary contacts 29, 33 and 31, 34 and the part 7, which may be marked or coloured for identification purposes, is provided with a lug 17 projecting through the cover 13 to which detachable contacts or a pneumatic timer may be coupled.
Patent GB-1097485-A (GB)
Title: Partial oxidation of hydrocarbons
Inventor: BECKER MITCHELL
IPC: C07C29/52
Filed: 1965-01-12
Abstract: Alcohols are prepared by oxidizing a hydrocarbon in the liquid phase with an oxygen-containing gas in the presence of a dehydrated form of ortho-boric acid, removing vapours comprising hydrocarbon and water from the reaction mixture, contacting said vapours with a first liquid hydrocarbon feed, thereby heating said feed and cooling said vapours, subjecting the thus heated first hydrocarbon feed to further heating and introducing this feed into the oxidation reaction mixture, contacting said cooled vapours with a slurry of ortho-boric acid in said hydrocarbon, thereby dehydrating the ortho-boric acid to meta-boric acid, feeding said meta-boric acid and said hydrocarbon to the oxidation reaction mixture, and contacting the vapours from the dehydration step with a second liquid hydrocarbon feed and passing said feed directly to said oxidation reaction mixture. The alcohols are recovered by hydrolysis of the borate ester-containing reaction mixture.  It is preferred to heat the first hydrocarbon feed to up to 185 DEG  C., thus vaporizing some of the hydrocarbon, and feeding both the liquid and vapour to the reaction mixture.  Suitable oxidation temperatures are 75-300 DEG  C. and suitable dehydration temperatures 100-160 DEG  C. Preferred reactants are C4- 8 saturated hydrocarbons. The process is illustrated by reference to drawings (not shown) of a schematic flow diagram as applied to the oxidation of cyclohexane.
Patent GB-494320-A (GB)
Title: Improvements in or relating to the manufacture of formylaminoanthraquinones
IPC: C09B1/40
Filed: 1937-01-15
Abstract: Formylaminoanthraquinones are made by reacting a halogenoanthraquinone which may carry further substituents with formamide at an elevated temperature, preferably in presence of an acid-binding agent and a copper catalyst.  In the case of dihalogenanthraquinones, one or both halogen atoms may be replaced by the formylamino group.  The reaction temperature should be 100-185 DEG  C., preferably 135-150 DEG  C., and below 150 DEG  C. when a primary amino group is present in the anthraquinone molecule in a -position.  Solvents for reaction which are specified are toluene, dichlorbenzene, nitrobenzene or excess formamide.  Acid binding agents specified are sodium carbonate or bicarbonate, and alkali metal acetates.  Copper catalysts specified are copper acetate and copper chloride.  The products are dyes for cellulose acetate artificial silk and related fibres. In examples, formamide is reacted with (1) 1-chloranthraquinone; (2) 1,5-dichloranthraquinone to give 1,5-diformylaminoanthraquinone; (3) 1,5-di(methylamino) - 4,8 - dibromoanthraquinone, obtained by bromination of 1,5-di(methylamino)anthraquinone (violet shades on cellulose acetate); (4) 1 - methylamino - 4 - bromoanthraquinone (violet shades); (5) 1 - N - methyl - 4 - bromoanthrapyridone; (6) 1 - amino - 2,4 - dibromoanthraquinone to give (a) 1-amino-2-bromo-4-formylaminoanthraquinone (bluish-red) or (b) 1 - amino - 2,4 - diformylaminoanthraquinone; (7) 1 - chloro - 2 - methylanthraquinone; (8) 1,3 - dibromo - 2 - aminoanthraquinone; (9) 1 - amino - 2 - methyl - 4 - bromoanthraquinone (red shades); (10) chloroquinizarine (orange-red shades).
Patent GB-685112-A (GB)
Title: Automatic device for re-loading the shuttle in a circular weaving loom
IPC: D03D37/00
Filed: 1949-01-18
Abstract: 685,112. Automatic spool changing in circular looms. QUALITEX SOC. DUNOD & CIE. Jan. 18, 1949 [Jan. 31, 1948]. No. 1361/49. Class 142 (iii). All the warp threads are brought to the inner shed line and a carrier 52 swings a fresh spool 46 into the path of the shuttle (Fig. 7). The spool has bearings 37, 38, of which the latter is grooved to engage a rib 105 (Fig. 5) on the carrier. As the shuttle passes the carrier, a stop 65 (Fig. 7) arrests the exhausted spool 64, which thereby remains on a carrier 52a, and the shuttle engages the fresh spool; an impulse in the direction of movement of the shuttle is transmitted from the exhausted spool to the fresh spool by the stop 65 acting through a spring 72. The carriers 52, 52a, next swing over to the right, whereupon the exhausted spool falls off the rib on the carrier 52a into a shoot 66. The carriers then return to the vertical position (Fig. 5), where another fresh spool 46a is pushed on to the carrier 52, in readiness for the next replenishing operation, by movement of a lever 48 to the left. The lever 48 is actuated by a crank pin 54 on a disc 55, which is driven by a slipping clutch and normally held stationary by a detent 58; an electro-magnet 86 withdraws the detent to allow the crank to make one revolution during each replenishing operation. Magazine. The spools are stacked in a cylindrical magazine 41 (Fig. 5), channeled to accommodate the bearings 37, 38 of the spools. Each weft end is attached to a cylindrical weight occupying the same height as a spool, the weights being stacked in a compartment 40 (Fig. 7). Latches 49, 50 (Fig. 5), interconnected by arms 80, 81, are rocked by the lever 48 on its return to the right after a replenishing operation to allow a spool to drop from the magazine. The lever 48 also operates a shutter 67, (Fig. 7), to allow the associated weight to fall from the compartment 40. Cutting weft. In the case of wire weft, a hook 62 moves the weight end into contact with a hook 69 connected in an electric circuit; energisation of the solenoid 86 closes a switch 98 (Fig. 5), causing the weft to be severed by burning. Specifications 677,716 and 677,832 are referred to.
Patent GB-764423-A (GB)
Title: Improvements in and relating to tubular gas heaters
IPC: F23M5/08
Filed: 1955-01-17
Abstract: 764,423. Tubular gas heaters. AKT.- GES. FUR TECHNISCHE STUDIEN. Jan. 17, 1955 [June 29, 1954], No. 1373/55. Class 64(1) A tubular gas heater comprises a radiation chamber 1 lined by heating tubes 7 and 7<SP>1</SP> through which the gas to be heated flows, the tubes being of undulating form and extending between an annular distributer 8 and header 10. The heating tubes form a continuous wall round the radiation chamber and each tube is so placed that one half 13 of an undulation is on one side of an imaginary surface 12 parallel to the walls of the chamber and the other half 14 is on the other side of the surface, the undulations of adjacent tubes being displaced with respect to each other by half the length of an undulation. Combustion gases flow downwards from the top of the chamber transmitting heat by radiation to the tubes 7 and 7<SP>1</SP>, and leave the chamber via the gas duct 6. In the modification shown in Fig. 4, the undulations of adjacent tubes are displaced in relation to each other 'by half and quarter the length of an undulation alternately.
Patent GB-1418291-A (GB)
Title: Control circuit for cooling fans
IPC: F01P7/08
Filed: 1972-01-12
Abstract: 1418291 Axial-flow fans LUCAS ELECTRICAL CO Ltd 28 Nov 1972 [12 Jan 1972] 1380/72 Heading FIC [Also in Division G3] An N.T.C. resistor 15 in a water cooling system 16, e.g. of a vehicle, operates a relay 22, 23 through transistors 25, 26 to control a fan 18 and keep the temperature of the water constant. When the temperature is low the voltage across the resistor is high turning on the transistors and the relay is energized closing contacts 23, 28 which stops the fan and connects resistor 29 from the base of transistor 25 to line 10 reducing its bias and hence the current through the relay. This has the effect of making the differential of the relay smaller and it can be adjusted by varying the setting of resistor 29.
Patent GB-137604-A (GB)
Title: Improvements in reinforced brickwork, or blockwork, for building or like purposes
IPC: E04B2/10
Filed: 1919-01-21
Abstract: 137,604. Freeman, A. C., and Elgood, E. J. Jan. 21, 1919. Reinforced block-work walls. - Brickwork or blockwork for walls &c. is reinforced by strips of expanded metal b placed on edge in grooves in the blocks so that the strips extend across the joints and are cemented in place. The vertical joints may be similarly reinforced, and there may be two or more parallel strips in each joint.
Patent GB-863659-A (GB)
Title: Improvements in and relating to electro-acoustic transducers
IPC: H04R19/02
Filed: 1959-01-16
Abstract: 863,659. Loudspeakers; diaphragms. PHILCO CORPORATION. Jan. 16, 1959 [Jan. 17, 1958], No. 1648/59. Class 40 (4). The diaphragm 10 of an electrostatic loudspeaker is stretched over a curved support in the form of a lattice of insulating material which in effect divides the diaphragm into a number of independent elongated portions 24. The major dimension of each portion 24 is oblique to the axis or axes of the curved diaphragm which in this case is cylindrical. The major dimension is also oblique to the line of maximum stress in the diaphragm. In Fig. 1, the diaphragm is held between two spacing lattices 11, 12 on two perforated plates 13, 14 of electrically conductive material. The diaphragm comprises a conductive layer 19 between two insulating layers 25, 26 which are cemented to the spacers 11, 12. Leads 20, 21, 22 are connected respectively to the conductive layer 19 of the diaphragm and to lugs 15, 16 on the plates 13, 14. The diaphragm is tensioned as described in Specification 795,962. In another embodiment, Fig. 6, the diaphragm 42 is spaced from a single curved and perforation plate 40 by oblique spacing threads 41.
Patent GB-919248-A (GB)
Title: 2,3-dimercapto-quinoxaline derivatives
IPC: C07F9/90
Filed: 1961-01-16
Abstract: The invention comprises 2,3-dimercapto-quinoxaline derivatives of formula <FORM:0919248/IV (b)/1> wherein A stands for one <FORM:0919248/IV (b)/2> group or two -XR(n-1) groups, X being arsenic, antimony, bismuth or tin, R is a C1-C4 alkyl radical or a phenyl radical, n is the valency of X and R1 is hydrogen or a halogen atom, a C1-C4 alkyl or C1-C4 alkoxy radical or a nitro group and m is 1 to 4.  They may be prepared by reacting a 2,3-dimercapto-quinoxaline with compounds of the formula R(n-2)X=O, R(n-2)XAn2, R(n-1)X-OH or R(n-2)XAn according to the following equations: <FORM:0919248/IV (b)/3> <FORM:0919248/IV (b)/4> In these equations R, X and n are as defined above and An stands for an acid radical, especially a halide.  Reactions A and C are preferably carried out in an inert diluent such as dimethyl formamide, the water formed being removed azeotropically if desired. Reactions B and D are carried out in the presence of acid binding agents and in inert solvents.  Specified acid binding agents are alkali metal and alkaline earth metal hydroxides and carbonates and tertiary amines or heterocyclic bases such as pyridine.  The products may be used as insecticides, acaricides and fungicides (see Group VI).ALSO:Insecticidal, acaricidal and fungicidal compositions comprise a solid or liquid carrier or diluent and a 2,3-dimercaptoquinoxaline derivative of formula <FORM:0919248/VI/1> wherein A stands for one > XR(n-2) group or two -XR(n-1) groups, X being arsenic, antimony, bismuth or tin, R is a C1-C4 alkyl radical or a phenyl radical, n is the valency of X and R1 is hydrogen or a halogen atom, a C1-C4 alkyl or alkoxy radical or a nitro group and m is 1 to 4.  Specified carriers and diluents include chalk, talc, bentonite, clay, water (if necessary with a commercial emulsifier), alcohols (especially methanol and ethanol), ketones (especially acetone and methyl ethyl ketone) and liquid hydrocarbons.
Patent GB-763359-A (GB)
Title: Combustion chambers for jet propulsion engines, gas turbines or other apparatus
Inventor: CLARKE JOHN STANLEY
IPC: F23R3/12
Filed: 1954-01-21
Abstract: 763,359. Generating combustion products under pressure. LUCAS (INDUSTRIES), Ltd., J. Feb. 10, 1955 [Jan. 21, 1954; April 1, 1954], Nos. 1807/54 and 9550/54. Class 51 (1). In a liquid fuel combustion chamber comprising a tubular or annular flame tube disposed within an outer air casing, a nose piece disposed at the inlet end of the flame tube is combined with an air duct which terminates in a vortex chamber, the latter having at one side an outlet through which air passes into the flame tube, a fuel nozzle located coaxially with the outlet of the vortex chamber being disposed either within the vortex chamber or within the flame tube. The combustion equipment shown in Figs. 1 and 2 comprises an annular flame tube a .disposed within an annular outer air casing b, c, a nose piece g disposed at the inlet end of the flame tube guiding the incoming air to the inner and outer air spaces. Some of the air passing to the inner space b is led off through ducts h to a series of vortex chambers i located within the nose piece g, each chamber having a fuel nozzle f and an outlet into the flame tube. The equipment in Figs. 4 and 5 comprises a tube type flame tube a disposed within the outer air casing b and a central air duct m is disposed within the nose piece g. Air passing through the duct m issues through an annular opening n into four vortex chambers i disposed between the duct m and the nose piece g. Each vortex chamber has an outlet j and contains a fuel nozzle f concentric with the outlet. Secondary air flows through the annular passage o between the nose piece and the upstream end of the flame tube wall. The embodiment of Fig. 6 is similar to that of Figs. 4 and 5 except that the fuel is vaporized and the fuel inlet nozzles are located within the flame tube not within the vortex chambers. Fuel flows through the ducts q and p where it becomes vaporized and issues in an upstream direction opposite the outlets j from the vortex chambers i. The combustion equipment is suitable for jet propulsion engines or gas turbine engines.
Patent GB-1490113-A (GB)
Title: Linear actuator
IPC: F16H25/20
Filed: 1975-01-15
Abstract: 1490113 Screw and riut gearing R B STANLEY 15 Jan 1975 [21 March 1974] 1831/75 Heading F2Q In a linear actuator, Fig. 1, a screw and nut mechanism includes a threaded shaft member 12, having its thread 20 engaged by several circumferentially-spaced roller elements 36 provided with complementary ridges and grooves 40 of annular, i.e. non-helical, form, the rollers also being provided at each end with frusto-conical bearing surfaces 52, 54, which roll within internal annular raceways 60, 62 of a surrounding cage arrangement 16, these raceways being substantially coaxial with the shaft member 12, such that the roller elements 36 are in freely-floating rolling relationship with the adjacent members, without any journalled constraint of the axis of each roller, and means are provided for mounting the roller cage components in an outermost member 18, in such a manner that a linear movement of member 18 relative to shaft 12 results from a relative rotational movement. A motor 14 provided with an anchorage lug 24 may drive shaft 12 in rotation, the motor casing 22 being free to slide axially within a bore portion 26 of the member 18, and linear motion is produced between the lug 24 and another lug 35 on member 18. In another embodiment, Fig. 5 (not shown), the motor and outermost member are both held stationary, and motor rotation of a roller cage assembly produces axial linear motion of a non-rotating threaded shaft. Fig. 2 shows an arrangement of four equally spaced rollers 36, in which the thread-engaging ridge and valley contours are staggered as in Fig. 3, which shows that at least two of the rollers may be of similar pattern, one being reversed. The threads may preferably be of V-shape, of 90 degrees included angle. A skeleton nut member 44, Fig. 4, having a window cavity 50 around each roller 36, and also having a clearance slot 96 around a stub shaft 94 at each roller end, is provided in its bore 46 with an internal thread which also engages the thread of shaft 12. During normal travel of the assembly of Fig. 1, axial force is exerted between the rollers engaging the shaft thread and the member 18 through an annular spring 82 or 84, and the roller ends 94 then cause nut 44 to be revolved around shaft 12 in unloaded motion, making no axial contact with other members. However, in the event of heavy shock loading of the assembly, deflection of springs 82 or 84 causes nut 44 to be brought into axial contact with a face 90 or 92 of a fixed stop member secured to member 18, and the thread of the nut 44 then resists the shock load, thereby protecting the other roller members from damage.