Patent GB-147166-A (GB)
Title: Automatic electric generating apparatus
IPC: H02J7/34
Filed: 1920-07-07
Abstract: 147,166. Silent Valve Motors Corporation, (Assignees of Strong, C. F.). Sept. 15, 1913, [Convention date]. Regulation, automatic system and apparatus for; systems of charging and discharging galvanic batteries.-In a battery system comprising a dynamo-electric machine, a petrol engine and means to start the engine, irrespective of the battery condition, upon the occurrence of an overload on the battery, the charging and discharging of the battery is controlled by an ampere-hour meter of the differential shunted type, provided with additional contacts adapted to control an alarm circuit and open the ignition circuit if the engine fails to start, and finally to disconnect the load from the battery if the engine is not started by an attendant. The fuel intake is heated electrically during the motoring period of the dynamoelectric machine, and a regulator operated by a reversible motor is placed in the load circuit. A dynamo-electric machine 14 adapted to operate as a generator or as a starting-motor for a petrol engine 10 is connected to a battery lead 28<a> through a switch 39 provided with additional contacts controlling the ignition circuit 11 of the engine. A battery 15 is connected in series with an ampere-hour meter 16 across the leads 28, 28<a>, and these leads are connected to a load circuit 24, 25 through leads 52, 48. The lead 52 contains an overload current relay 59, a cut-out switch 53. and an overload cut-out 55. When the current supplied by the battery 15 to the load circuit 24, 25 exceeds a predetermined value, the armature 61 of relay 59 is attracted to engage contact 64. thereby closing the circuit of the solenoid 32 of a rocker switch 31. The operation of the switch 31 completes the circuit of the magnet 40 of main switch 39, which closes to start the generating- plant 10, 14 to assist in supplying the abnormal load. The meter 16 is provided with a moving contact-arm 17 and fixed contacts 18, 19, 20 and 21. When the battery is fully charged, a voltage relay 66 attracts its armature 70 and the arm 17 engages contact 18. Under these conditions the operating solenoid 33 of the switch 31 is placed across the leads 28, 28a, and the circuit of operating coil 40 of the main switch 39 is broken at the contact 37 to disconnect the battery from the generator 14. When the battery is nearing its discharged condition, the arm 17 engages contact 19 to place the operating-solenoid 32 of switch 31 across the leads 28, 28<a> and the circuit of the operating-coil 40 of the switch 39 is completed to correct the battery 15 to machine 14 which then operates as a starting-motor for the engine 10. Under this condition the armature 76 of a reversecurrent relay 74 is attracted to close the operating- circuit of a relay 80 the contact 84 of which is in the circuit of a heating-coil 13 in the. fuel intake 12. The relay 80 is also provided with a contact 88 in the circuit of a signal relay 42. If the engine fails to start, the contact arm 17 engages contact 20 to complete the circuit of the signal relay 42 and the operating-coil 33 of switch 31. The relay 42 closes the circuit of an alarm 47 and the switch 31 operates to de-energize the coil 40 of the switch 39. If the attendant fails to start the engine, the arm 17 finally engages contact 21 to close the circuit of the operating-coil of a cutout 53. A regulating-resistance 89 in the load circuit is varied by a reversible motor 92 the field windings 95 of which are controlled by a voltage relay 96. Switches 106 open the motor circuit at the limits of travel of the regulating- contact 90,