baber/WOPTO huggingface dataset:
Patent GB-1460741-A (GB)
IPC: H02P7/298
Filed: 1974-02-18
Abstract: 1460741 Control of DC motors LANSING BAGNALL Ltd 20 Aug 1974 [10 Sept 1973 18 Feb 1974] 42432/73 and 7210/74 Heading H2J A D.C. motor 5 having a series field winding 7 and, if desired, a further field winding 28, is controlled by a thyristor chopper circuit 9-14 and a change-over switch 4 to either take power from a D.C. source 3 or return it thereto during regenerative braking. With switch contacts 4a, 20 engaging as shown, current flows from the source 3 through members 4, 5, 6, 8 and 7 when thyristor 9 is conductive, turn off of the latter by a regulator 22 causing circulating current to flow through diodes 15, 27. To brake the motor, switch contacts 4a, 21 are engaged to cause the EMF generated by the motor to flow in a circuit comprising members 5, 8, 7, 9 and 17, the winding 28 (if present) assisting in the initiation of the generator action. When thyristor 9 is turned off by the regulator 22, power is returned to the source 3 through the circuits 17, 5, 19, 8, 27 and 17, 5, 19, 8, 7, 15. Thus the motor acts as an unstable series generator when thyristor 9 is conductive, the current being limited by operation of sensor 8 to cause regulator 22 to limit the operating frequency and/or mark-space ratio of the chopper circuit. Such limitation also occurs if required during driving of the motor. Switches (not shown) may reverse the armature connections to reverse the motor direction. In a modification, Fig. 2 (not shown), the motor has a shunt field winding (23) controlled by a sensor (25) and chopper regulator (24), members 7, 27, 28 are omitted and a choke (26) functions to limit the rate of rise of pulses of current through the armature. A further diode may be added to shunt members 4, 5 and pass armature circulating current during off periods of the thyristor when driving the motor.
Patent GB-1299179-A (GB)
Title: Improvements in or relating to diazo type materials
Inventor: BOER HENRI GERARD SEAN DE
IPC: G03C1/61
Filed: 1969-02-11
Abstract: 1299179 Diazotype materials GAF CORP 5 Feb 1970 [11 Feb 1969] 7410/69 Heading G2C A two-component diazotype material comprises a support coated with a layer containing a diazonium compound, an azo coupler, a stabilizing acid, zinc chloride and either (i) an aromatic amine or water-soluble salt thereof of the formula:- wherein R 1  and R 2  are hydrogen, alkyl, hydroxyalkyl, aryl or aralkyl, or aryl or aralkyl substituted by halogen, hydroxy and/or amino groups but R 1  and R 2  are not both hydrogen and R 3  is the same as R 1  or R 2  or halogen or (ii) 4, 6- bis(p-methylaminobenzyl)-resorcinol or a watersoluble salt thereof. Specified stabilizing acids are maleic, malonic, glyoxalic, malic, tartronic and sulphanilic. The light-sensitive layer may contain polyvinyl alcohol and N-(3<SP>1</SP>-morpholinopropyl)-2-hydroxy-3-naphthamide may be used as coupler. The imagewise exposed material may be developed by horammonia, sodium carbonate, trisodium phosphate or volatile basic organic nitrogen compounds.
Patent GB-789459-A (GB)
Title: Improvements in or relating to synthetic lubricants
Inventor: MORTON RONALD WILLIAM
Filed: 1955-03-15
Abstract: A lubricating oil composition comprises a mixture of esters, the mixture including at least one ester derived from azelaic acid and at least one ester derived, not from azelaic acid, but from some other dicarboxylic acid.  The choice of esters is limited to those of formula R2OOCR1COOR21, R2OOCR1COOR4OOCR3, R3COOR4OOCR31, R2(OOCR1COOR4)nOO CR11COOR21 or R3COOR4(OOCR1COOR41)n OOCR31, wherein R1 and R11 are the residues of dicarboxylic acids HOOCR1COOH, R2 and R21 are the residues of monohydric alcohols R2OH, R3 and R31 are the residues of monocarboxylic acids R3COOH, R4 and R41 are the residues of glycols HOR4OH, and n has a value from 1 to 6 which need not be an integer.  The monohydric alcohol R2OH may be an ether or thio-ether alcohol, while the glycol HOR4OH may be a polyglycol.  The azelaic acid esters may be complex esters derived from C8 or C9 oxo alcohol or 2-ethyl hexanol, azelaic acid and polyglycol 200 (a commercial tetra-ethylene glycol), or diesters formed between azelaic acid and C8 or C9 oxo alcohol or 2-ethyl hexanol.  The lubricating oil composition may also contain antioxidants (e.g. phenothiazine), E.P. additives and rust inhibitors (e.g. lanoline or lecithin).  In the examples, compositions are described consisting of a complex ester (derived from 2-ethyl hexanol, azelaic acid and polyglycol 200) together with either dinonyl sebacate or another complex ester (derived from 2-ethyl hexanol, sebacic acid and polyglycol 200) or both.  For comparison purposes, a composition consisting of dinonyl sebacate and the complex sebacate ester is described.  Specifications 666,697, 687,346, 757,023 and 763,611 are referred to.
Patent GB-941361-A (GB)
Title: Improvements in gas and liquid contact apparatus
IPC: F24F6/06
Filed: 1960-03-03
Abstract: 941,361. Contacting gases with liquids. C. G. MUNTERS. March 3, 1960 [March 5, 1959], No. 7557/60. Heading B1R. A gas-liquid contact apparatus, e.g. an air humidifier or evaporative cooler, comprises a contact body made of liquid absorbent material having passages through which the air &c. is drawn, e.g. a disc 28 made of spirally-wound alternate layers of plain and corrugated phenolic resin impregnated paper; the passages of the body being continuously cleaned and kept moist by producing relative movement, e.g. slow rotation, between the body and a device or arm 22 having orifices for directing a stream of liquid through the passages, and for subsequently directing a stream of gas through them to remove excess liquid. An arm on the other side of the disc may have corresponding orifices to receive the discharged liquid and gas, and the liquid may be caused to flow back and forth through different groups of passages in the body by arranging suitable flow channels for the liquid in the arms on either side of the disc. The form shown is a window-type air cooling unit in a box-like casing faced with gauze 13 on the side exposed to the atmosphere, air from outside being drawn through the wetted, slowly-rotating disc by a fan. A modified form in which the disc rotates in a horizontal plane is also described. Specification 837,601 is referred to.
Patent GB-1459296-A (GB)
Title: Common transport for magnetic tape cartridge or magnetic card cartridge
IPC: G11B15/675
Filed: 1974-02-19
Abstract: 1459296 Tape cartridges TEKTRONIX Inc 19 Feb 1974 [19 March 1973] 7599/74 Heading B8M [Also in Division G5] When a cartridge CC, Figs. 1 and 5, or TC, Fig. 9, is held by latching means 12, Fig. 1, in operative position in relation to a capstan 18 and a transducer 40 in a transport housing T, two holes and a reflector 102, Fig. 5, in the cartridge are so positioned as to pass a light beam from a lamp 8 to a detector 106, both secured in the transport housing T; a recording medium, which may be either a flexible card MC, Figs. 1 and 5, or a tape MT, Fig. 9, in the cartridge generally interrupts the light beam but briefly passes it through one or more holes 108, Fig. 1. As shown, in either form of the cartridge a pinch roller 86 is carried by a one-piece spring arm 74. Insertion of a cartridge into the transport housing T causes operation of switches 52.
Patent GB-453577-A (GB)
Title: Improvements in or relating to the manufacture of alloys containing copper and zinc
IPC: C22C9/04
Filed: 1935-03-11
Abstract: 453,577. Alloys; annealing. BROWNSDON, H. W., 43, St. Agnes Road, Moseley, COOK, M., 48, Rocky Lane, Perry Barr, and DUDDRIDGE, G. K., 131, Fentham Road, Birchfields, all in Birmingham, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. March 11, 1935, No. 7602. [Classes 72 and 82 (i)] Copper -zinc c alloys contain up to 36 per cent of zinc, 2-30 per cent of nickel, and 0À5-3 per cent of aluminium, the nickel content being at least twice the aluminium content, and the combined copper and nickel contents varying with the aluminium content within the area A B D C on the diagram; the alloys are quenched from 800- 900‹ C. and tempered at 300-600‹ C. Specifications 399,177 and 425,547 are referred to.
Patent GB-665306-A (GB)
Title: Improvements in and relating to frequency modulation receiving systems
IPC: H03D3/32
Filed: 1949-03-21
Abstract: 665,306. Frequency modulation. BRITISH THOMSON-HOUSTON CO., Ltd. March 21, 1949 [March 27, 1948], No. 7637/49. Class 40 (v). Demodulation of received frequency-modulated waves is effected in a beam-deflection tube, the received wave being applied directly to an intensity control electrode, and a phasedisplaced version thereof applied to deflecting electrodes. The signal output is taken across load resistors connected respectively to a pair of target electrodes. The received F.M. wave, or an intermediate-frequency wave derived therefrom, is applied at terminals 15 and is passed directly to the control electrode 3 interposed between the cathode 2 and accelerating electrode 4 of the tube 1. The wave is also applied through coupled tuned circuits 11 across the deflecting-plates 5, 6. At mid-frequency, the deflecting voltage is in quadrature relation with the input voltage, and the beam falls equally on the target electrodes 8, 9 so that zero output is obtained at 29 across the resistors 23, 24. As the input frequency deviates, the quadrature relation is disturbed and voltages appear at 29 proportional to the deviation. A ring collector electrode 7 acts as a limiter to remove undesired amplitude variation in the received wave. Resistors 27, 28 connected between the target electrodes and the deflecting electrodes provide automatic beam-centring means; and a bias potentiometer 21 associated with the deflecting electrodes provides focusing control. In a modified arrangement, Figs. 2 and 3 (not shown) the F.M. wave is applied to the control electrode 3, is amplified in the tube 1, and is fed from both the targets 8, 9 to the phasing tuned circuits 11, the secondary being connected across the deflecting electrodes 5, 6.
Patent GB-1384780-A (GB)
Title: Automatic insulation characteristic analyzing devices
IPC: G01R31/14
Filed: 1972-02-18
Abstract: 1384780 Calculating rate of change KYOKUTO BOEKI KAISHA Ltd (FAR EAST MERCANTILE CO Ltd) 18 Feb 1972 [16 March 1971] 7682/72 Heading G4G [Also in Division G1] In an arrangement for automatically and continuously evaluating dI/dV, where I, V are an alternating current and an alternating voltage respectively, the voltage V is rectified (17) and applied to a voltage averaging circuit 18 which repetitively goes through a cycle of integrating the rectified voltage V for a 40 ms period T 1 , holding the integrated value for a 10 ms period T 2 , and then being reset. In response to a trigger pulse from an AND gate 25 during one of the T 2  periods, a sample holding circuit 19 will store the integrated value momentarily being held in the averaging circuit 18, and thereafter, until the next trigger pulse is generated, a differential amplifier 20 will supply the difference #V between the current average value of V and the average value as at the instant of sampling. A similar network 13-16 responsive to the current I evaluates #I, and a divider 27 produces a signal #I/#V. The AND gate 25 will supply the next trigger pulse during the interval T 2  immediately after #V has reached a preset (22) threshold #V 0 . The value of #I/#V at this instant, which represents dI/dV averaged over the preceding interval #V 0 , will thereupon be stored (28), and the sample holding circuits 15, 19 then set to the new values of I and V, so that dI/dV may now be evaluated over the next interval #V 0 . The values of dI/dV obtained in this way after every increment #V 0  in the rising applied voltage V are plotted against V on an X-Y plotter 31. A switch 23 enables the initial values of I and V to be stored at the beginning of a test.
Patent GB-845652-A (GB)
Title: Improvements in or relating to the extraction of tungsten from tungsten-containing materials
IPC: C01G41/00
Filed: 1958-03-10
Abstract: Tungsten values are recovered from materials in which the tungsten exists principally as a tungstate or tungsten carbide by passing steam over the material at a temperature of at least 900 DEG C. to volatilize a substantial portion of the tungsten present.  By condensing the vapours tungsten trioxide is recovered.  For tungstates the temperature is preferably between 1000 DEG C. and 1100 DEG C., and for tungsten carbide between 900 DEG C. and 950 DEG C. Suitable raw materials include ores such as ferberite, huebnerite, wolframite, scheelite, reinite, tungstate, stolzite, raspite, chillagite, cuproscheelite, or cuprotungstite, and scrap tungsten carbide cutting tools.
Patent GB-950380-A (GB)
Title: Pharmaceutical products for the treatment of skin diseases
IPC: A61L15/40
Filed: 1962-02-27
Abstract: In order to permit treatment of wounds with North American pine tar preparations in the absence of air a composition incorporating unrefined North American pine tar is applied on a flexible, air-impervious backing member or is applied in a solution of a film-forming substance.  If a backing strip is used this may be of closely woven fabric or of synthetic resin, and the tar is applied to it as an adhesive composition which may include such substances as lanolin and zinc oxide.  For forming a film dressing it is preferred to use flexible collodion as a carrier for the North American pine tar.  In this case the solvent in the flexible collodion evaporates leaving the pine tar in an air impervious film of collodion.
Patent GB-846729-A (GB)
Title: Machine for testing helical spline broaches
IPC: B23D37/00
Filed: 1957-03-11
Abstract: 846,729. Gauging-apparatus. ILLINOIS TOOL WORKS. March 11, 1957 [March 9, 1956], No. 7958/57. Class 106 (2). A machine for testing a helical spline broach for lead, involute and spacing, in which a motordriven head stock 17 rotates a broach 22 in synchronism with the linear displacement along a bed 14 of a testing head 26 by lead screw 24 and high reduction gearing, the head 26 comprises a testing unit 192, with a feeler 186 engaging the broach 22, supported from a base 28 for movement toward and away from the bed 14 in synchronism with the displacement and rotation, the feeler 186 actuating means for interpreting movements occasioned by errors in the broach. The support for the unit 192 is an inclined slide 96 co-operating with a similar incline on the base 28 in the manner of a sinebar. The slide 96 is locked on the base while gauging the lead of a helix and is unlocked when gauging involute so that upon engaging a fixed stop 112 continued linear displacement of the base 28 causes the slide 96 to lift the unit 192 to an extent indicated by scale 110, whilst the dial gauge 196 gives a reading representing the involute. If this process is continued until the feeler 186 reaches the next spline, the spacing may be checked. Detailed means are shown for moving the feeler 186 vertically and horizontally relative to the slide 96 for initially setting the feeler in contact with the required point of the helix. The base 28 of the testing head slides on a dovetail guide 16 of the machine bed 14 and has a depending fixture 38 carrying a compound nut 62 engaging the lead screw 24 set to prevent backlash and the fixture 38 can be finely adjusted relative to the slide 28 vertically and transversely of the lead screw to effect accurate location. A switch, actuated at the limits of movement of the testing head, switches off the drive motor to prevent excess movement in either direction. Specification 774,128 is referred to.
Patent GB-841943-A (GB)
Title: Improvements relating to aircraft fuselages
Inventor: LOBELLE MARCEL JULES ODILON
IPC: B64C1/00
Filed: 1956-03-14
Abstract: 841,943. Aircraft framework. M. L. AVIATION CO. Ltd. Feb. 26, 1957 [March 14, 1956], No. 8000/56. Class 4. A collapsible fuselage 4 for a small, light aircraft (in the embodiment described, one provided with an inflatable wing 1) comprises three structures 5, 6 and 7 connected together by quickly-releasable pins and each arranged to fold for stowage or transport. A detachable fore-carriage 3a and main undercarriage 3b having foldable braces 51-53 are attached to the fuselage and the mounting for a rear-mounted engine is readily removable. The upper structure 5 consists of a beam 10, hinged in two parts at its centre, and four inverted V-shaped pylons 11-14 hinged to the beam 10. The middle structure 6 makes up the upper parts of two cockpits and includes flat members 21 and 22 formed with cockpit openings 23 and pivotally connected to struts 26 and 28 which are connected to the lower structure 7. This consists of three upright frames 37, 38 and 39 and two base members 40 and 41. Each of the structures 5-7, when detached can be folded compactly. Hammock seats are provided in the cockpits and the front part 80 of the fuselage is made of compressed horsehair covered with fabric. The remainder of the fuselage is covered with fabric secured by press studs and the pylon 13 carries an asbestos fire-wall. The fore-carriage 3a is readily detachable and carries pedals 76 to enable it to be steered and the brakes on each undercarriage unit 3b are controlled by a lever 90 operating through a separable Bowden control cable 92b. The main flying controls are operated by a suspended control column 105 forming part of a control unit secured by a detachable shoe 98 mounted on beam 10. Specifications 797,376 and 841,942 are referred to.
Patent GB-1318232-A (GB)
Title: Data-processing systems
Inventor: FABER ULBE
IPC: G06F9/24
Filed: 1970-05-06
Abstract: 1318232 Three instruction level processing BURROUGHS CORP 6 May 1970 [19 May 1969] 8036/71 Divided out of 1318231 Heading G4A The subject matter of this specification is identical to that of the parent Specification 1,318,231 but the claims relate to a data processing system including a logic unit comprising a number of individual units which are modular in the sense that the format of the programmed control signals is independent of the number of individual units used. In this way different length words may be handled in parallel simply by introducing extra logic units and associated control signal decode gates.
Patent GB-697037-A (GB)
Title: Improvements in air filtering means for the crankcases of motor vehicle internal-combustion engines
IPC: F01M13/02
Filed: 1951-04-06
Abstract: 697,037. Crank-case relief valves. TRICO PRODUCTS CORPORATION. April 6, 1951 [April 8, 1950], No. 8060/51. Class 7 (ii) [Also in Group XXVIII] In a motor vehicle internal-combustion engine, the crankcase of which is ventilated by an airstream, a filter-through which the airstream passes, comprising a porous filter body 34, Fig. 2 of a circular shape in cross-section and a resilient cleaning frame in the form of a coiled wire member 37 having spring coils encircling the body 34 for wiping or scraping contact therewith in an axial direction, there is provided means, such as the weight 38, for distending the member 37. A rotary pump 21, Fig. 1, which constitutes a source of suction is driven from the engine camshaft 22 and discharges in the crankcase 23, its inlet being connected to a suction actuated accessory, such as windscreen wiper 1, by a conduit 15. In conduit 15 is interposed an automatic venting valve 24 which has a through passage 25, Fig. 2, comprising a part of conduit 15, and a venting port 26 opening thereinto which is controlled by valve 27; the port 26 is closed by valve 27 during accessory operation under the action of a spring 28 and opened at other times by a diaphragm 30 through a pin 29. When the accessory motor control valve is in the running position both sides of the diaphragm are acted upon by suction, the underside being open to passage 25 and the top being connected by a conduit 33 to the suction port of the control valve with the result that the spring 28 is free to seat the venting valve 27. When the accessory is inoperative the top of the diaphragm is open to atmosphere through the control valve and the underside of the diaphragm is subjected to sub-atmospheric pressure since the pump continuously operates; the diaphragm therefore moves downwardly and opens the venting valve 27 so permitting air to be drawn in from atmosphere, through the filter 34 (see Group XXVIII), secured to the vent valve casing and discharged into the crankcase, which has a breather, not shown.
Patent GB-1168352-A (GB)
Title: Motor Vehicle Body Panel
IPC: B60Q1/26
Filed: 1967-02-21
Abstract: 1,168,352. Motor vehicle body panels. FORD MOTOR CO. Ltd. 21 Feb., 1967 [5 July, 1966], No. 8091/67. Heading B7B. [Also in Division F4] A motor vehicle comprises a rear body panel 12 concealing the tail-lights 20 of the vehicle and made of transparent acrylic plastics 13 the body panel 12 being rendered partially opaque and a desired colour by a coloured woven wire grid embedded in the plastics 13 so that the panel 12 has the same appearance as the metal body panels of the vehicle while transmitting light from the lights 20; alternatively, the grid may comprise parallel elements joined to or embedded in or spaced from the plastics 13, or comprise paint-filled grooves in the plastics 13. The interior surface 30 of the plastics 13 is coated with a glass bead diffusing coating. A red filter 26 is provided. The grid elements occupy 30-50% of the panel area.
Patent GB-1521413-A (GB)
Title: Insecticidal composition
IPC: A01N25/00
Filed: 1976-03-01
Abstract: 1521413 Insecticide/attractant composition STERLING DRUG INC 1 March 1976 [11 March 1975 25 Oct 1975] 08101/76 Heading A5E An insecticidal composition contains 5 to 80 weight % of an insecticide selected from 0, 0 - dimethyl - 2, 2, 2 - trichloro - 1 - hydroxyethylphosphonate (Trichlorphon), 0, 0 - diethyl - 0 - (2 - isopropyl - 6 - methyl - 4 - pyrimidinyl) monothiophosphate (Diazinon) 0, 0 - dimethyl - S - (1, 2 - dicarbethoxyethyl) dithiophosphate (Malathion) and 0, 0 - dimethyl - 0 - (3 - methyl - 4 - nitrophenyl) monothiophosphate (Fenitrothion); 30 to 90 weight % of a foodstuff (e.g. sugar); and 0.1 to 2.0 weight % of at least one food attractant selected from 4 - hydroxy - 3 - methoxybenzaldehyde (vanillin), α - terpineol, a C 8 - to C 15 -aliphatic alcohol with one to three double bonds and an aryl - substituted aliphatic alcohol with 2 to 9 C-atoms in the alkyl group. Preferred attractants are attar of roses components such as geraniol or phenethyl alcohol, farnesol and α - terpineol. The compositions find application in combating insects in stables.