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    • 4. 发明专利
    • Electric regulator circuits
    • GB931702A
    • 1963-07-17
    • GB3656058
    • 1958-11-13
    • NEWTON BROTHERS DERBY LTD
    • WILLIAMS BENJAMIN JONESOSBORNE GEORGE JAMES
    • H02P9/22
    • 931,702. Automatic voltage control. NEWTON BROS. (DERBY) Ltd. Oct. 22, 1959 [Nov. 13, 1958], No. 36560/58. Class 38 (4). In an electric regulator circuit a field 1 of a generator A is connected in series with a carbon pile 2 across the output lines and transistors 7, 8, having a common emitter-resistor 9 are biased from a potentiometer 6 and a constant reference potential, across diodes 4, respectively. A voltage representative of the relationship between the line voltage and the reference voltage is developed across a resistor 11 and through transistors 13, 14 energizes a control winding 3 of the carbon pile so as to maintain the output voltage of the generator constant by controlling the current through the field 1. A feedback dependent on rate-of-change of field voltage is derived through a winding 15 of a transformer, the secondary of which is connected in series with the control winding 3 or in positions 16a, 16b. An additional control winding may be connected across the generator to assist the control winding 3. In a modification, an alternator is controlled by supplying the voltage control circuit through a full-wave rectifier and connecting the carbon pile in the field circuit of an exciter. In a further modification, the carbon pile is connected in series with an unregulated supply and controlled so as to maintain the voltage across a load constant.
    • 6. 发明专利
    • DE1067102B
    • 1959-10-15
    • DEB0039675
    • 1956-03-27
    • BENDIX AVIAT CORP
    • NEILD WILLIAM GREENE
    • H01C10/10H02P9/22
    • 797,319. Automatic voltage control systems. BENDIX AVIATION CORPORATION. March 22, 1956 [March 31, 1955], No. 9016/56. Class 38 (4). [Also in Group XXXVI] A carbon pile regulator comprises two parallel, connected piles one having fewer and thicker carbon discs than the other, and means for simultaneously compressing the two piles. The resistance-elongation characteristics of the piles are arranged to intersect in the operating range of the regulator. Fig. 1 shows the lowresistance pile 8 of relatively thick discs and high-resistance pile 9 of thinner discs in a, housing 15 having cooling fins 16. An armature assembly 7 is associated with a spring diaphragm 35 and electromagnetic coil 6 and is adapted to compress the piles through contact plugs 31 and 33. The armature assembly is balanced. by counterweight 46 through spring member 47. The housing comprises cooling fins 16. Fig. 2 shows a regulator system for generator 51 embodying the regulator comprising the two piles 8 and 9 in series with the shunt field coil 54. Under high. speed no-load conditions only the high-resistance pile 9 is effective, the low-resistance pile 8 being open. As the total resistance of the regulator is decreased the low-resistance pile 8 enters into circuit, and at full load, low speed is carrying most of the load. Under conditions of in-. creasing resistance when the low-resistance pile opens, the high-resistance pile still provides a shunt resistance so that any tendency for arcs across the low resistance pile is decreased.
    • 7. 发明专利
    • Improvements relating to electromagnetic carbon-pile regulators
    • GB775542A
    • 1957-05-29
    • GB3444155
    • 1952-12-31
    • STONE J & CO LTD
    • STAMBERGER ANDREW
    • H02P9/22
    • Lubricating oils are produced by contacting a mixture of a lubricating oil fraction produced by catalytically cracking gas oil and a lubricating oil fraction from a paraffinic crude oil, with a selective solvent for aromatic compounds and separating the raffinate. The gas oil fraction and both lubricating oil fractions may boil in the range 650 DEG to 1100 DEG F. The gas oil, e.g. a petroleum oil, may be cracked at 800-1000 DEG F. and atmospheric to 25 p.s.i.g. pressure using a modified natural or synthetic clay or a gel, e.g. montmorillonite clays, silica-alumina and silica-magnesia. Selective solvents referred to are SO2, phenol, furfural and nitrobenzene; phenol may be employed with up to 10 per cent of water as a solvent modifier. The lubricating oils may be dewaxed separately or the mixture may be dewaxed before or after solvent extraction; solvent dewaxing, e.g. with propane or methyl ethyl ketone, may be used. The mixture of lubricating oils may consist of 10-60 per cent of the cracked oil. The finished oil may be clay-treated.
    • 10. 发明专利
    • Improvements in electromagnetic regulators for controlling the constants of an electric circuit
    • GB696065A
    • 1953-08-26
    • GB586850
    • 1950-03-08
    • ELECTROM SOC
    • H02P9/22
    • 696,065. Automatic regulation. SOC. ELECTROM. March 8, 1950 [March 10, 1949], No. 5868/50. Class 38 (iv). [Also in Group XXXVII] In a regulating system in which the armature of a carbon pile regulator is energized by a vibrating contact regulator, two alternative carbon pile regulators are disclosed. In the first, Fig. 1, the pile is compressed by a spring 4 acting on a lever 5 connected to the pile compression member 38. Lever 5 is also connected to the armature 12 of the operating coil 7 so that as the coil is energized, the pile opens. The upper end of the pile is connected to a pivoted lever 43, which, by a spring 47, applies an initial compression to the pile to compensate for shrinkage. A damping dashpot 54 is provided. In the second embodiment, Fig. 10, the pile is compressed by the armature 12 of the operating coil 19 through a spherical thrust-bearing, Fig. 11 (not shown), against the tension of a decomposition spring 20. The upper end of the pile is connected to a pivoted lever 5 which by a spring 100 applies an initial compression to the pile to compensate for shrinkage. A damping dashpot 107 is provided.