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    • 1. 发明专利
    • Improvements in voltage regulation for electric generators, rotary transformers and the like
    • GB589992A
    • 1947-07-04
    • GB861245
    • 1945-04-06
    • BENJAMIN JONES WILLIAMS
    • G05F1/644H02P9/22
    • 589,992. Automatic control systems. WILLIAMS, B. J. April 6, 1945, No. 8612. [Class 38 (iv)] Voltage regulation apparatus comprises a main carbon pile regulator and a pilot regulator arranged to buck or boost as appropriate the effective ampere-turns of the main regulator coil. In the arrangement shown, a main carbon pile 12 is controlled jointly by a voltage coil 13, wherein the current flow corresponds to a voltage setting less or more than that required at output terminals 19, 20, and an auxiliary coil 18 connected correspondingly either to assist or oppose the ampere-turns of the voltage coil 13, and in series with a pilot carbon pile 15 controlled by a voltage coil 16 adjusted at the voltage setting of the main regulator to give a current flow in the auxiliary coil 18 to increase or decrease as required the effective excitation of the main regulator so that it acts to maintain the output voltage at the required value. In a modification, Fig. 4 (not shown), the current through the pilot regulator carbon pile passes through some of the turns of the main regulator coil instead of through a secondary coil. In a further modification, Fig. 5 (not shown), the armature of the main regulator operates both the main carbon pile and the pilot carbon pile. In a rotary transformer circuit, Fig. 2 (not shown), a pilot regulator is utilized on the output side to act on the auxiliary coil of a main regulator on the input side so that the latter is adjusted responsively to input and output voltage fluctuations. In a further application, Fig. 3 (not shown), a bridge rectifier and pilot regulator connected across the output of a separately excited alternator supply current to the main and auxiliary coils respectively of a main carbon pile inserted in the alternator field windings to vary the current therein and maintain constant output voltage. An electronic pilot regulator may be used instead of the carbon pile type.
    • 4. 发明专利
    • Improvements in the control of electric supply systems
    • GB589474A
    • 1947-06-20
    • GB749945
    • 1945-03-24
    • DAVID PORTEOUS ALEXANDERBENJAMIN JONES WILLIAMSRONALD LESLIE ALEXANDER MCKENZ
    • H02P9/22
    • 589,474. Automatic control systems. ALEXANDER, D. P., WILLIAMS, B. J., and McKENZIE, R. L. A. March 24, 1945, No. 7499. [Class 38 (iv)) Voltage. As shown, Fig. 1, each of two or more shunt-wound generators 1, 2 connected to common bus-bars and driven by separate power units has a carbon pile resistance 7, 8 controlled jointly by a current coil 15, 16 which acts to reduce the voltage when the loading of the machine increases (e.g. because of an increase in its speed), and a voltage coil 11, 12 controlled by a carbon pile master regulator and acting to increase the voltage when the bus-bar voltage falls. The generator regulators are identical in construction, Fig. 2 (not shown), each having a current coil superimposed on a voltage coil actuating an armature to adjust the carbon pile from an initial minumum resistance fixed by compressing the carbon elements between a spring disc carrying the armature and an adjustable cap secured to the regulator body. In the master regulator as shown, Fig. 3, a carbon pile 17 having a maximum resistance fixed by the tension of a helical spring 43 is adjusted by a lever 34 pivoting on two flat springs 35, only one of which is shown, according to the movement of two arms 33 of an armature 32 within two slots 30 cut in one end of an iron core 29 over which is wound a voltage coil 19 to form an electromagnet 29a.
    • 8. 发明专利
    • Improvements in electrically heated pads
    • GB561436A
    • 1944-05-19
    • GB1854742
    • 1942-12-30
    • THOMAS BENJAMIN JONES
    • H05B3/34
    • 561,436. Electrically heated pads. JONES, T. B. Dec. 30, 1942, No. 18547. [Class 39 (iii)] A heated pad for domestic or hospital use comprises a heater 10 of wire 14 wound on an asbestos core 13 and insulated by a wrapping 15 of asbestos or glass, the heater being sewn by asbestos thread 11 to one half of a sheet of glass cloth 12. A thermostat may be included in the circuit. The sheet 12 is placed on a thick sheet of glass wool 19 backed by cotton net 20, the assembly being folded double and placed in a fireproof cotton bag 21, enclosed in an air-tight and water-tight bag 22 of varnished glass cloth. A bag 32 of soft material is added, and finally a bag 23 of washable cotton. In a modification for industrial use, the glass wool 19 is placed on one side only of the pad, and the assembly placed in an envelope of metal gauze to which the earth lead of the cable is connected. The whole is then placed in a heat-resisting waterproof fabric bag having eyelets or the like for attaching it to the article heated.