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"What can be more palpably absurd than the prospect held out of locomotives traveling twice as fast as stagecoaches?"
The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 6956313 | Method and apparatus for reducing hot spot temperatures on stacked field windings A method and apparatus for a generator coil includes a plurality of stacked windings in a rotor where individual turns are stacked in parallel sided radial slots in the rotor. Each successive turn has the same width substantially corresponding to a constant width of... | 10/18/2005 |
| 6812657 | Motor control for two motors A load in an electrical apparatus is driven by two motors M1, M2. Switching means (R1, R2) switches the motors M1, M2 between: a series configuration, in which the motors M1, M2 are connected in series across a... | 11/02/2004 |
| 5714858 | Device for controlling and regulating the relative speed between rotary components interacting with one another respectively connected to the rotor and stator of an electric motor A device for controlling and regulating the relative speed between the scroll (4) and drum (2) of a centrifugal extractor, comprising a dc or ac electric motor (10), stator (10a) of which is made integral with drum (2) and rotor (10b) of which is made int... | 02/03/1998 |
| 5521470 | Plural commutator type motors with common parallel driving circuit At least two motors share a common driving circuit. The armatures of the motor are connected in parallel between the terminals of the power supply. Limiting resistors and choke diodes are included to prevent imbalances caused by different loads on the res... | 05/28/1996 |
| 4495449 | Electric propulsion system for traction vehicles with automatic retard speed regulation Two separately-excited d-c electric motors are used to drive the wheels of a traction vehicle. The magnitude of motor field current varies as a function of the value of a variable control signal, which value is representative of any deviation of the field... | 01/22/1985 |
| 4249641 | Speed control system for hydraulic elevator A speed control system for a hydraulic elevator, in which, actuating a hydraulic pump by driving an induction motor in forward direction, oil is supplied to a hydraulic cylinder for upward travel of an elevator cage, while the hydraulic pump is driven to ... | 02/10/1981 |
| 4032824 | Variable-speed 3-phase drive A variable-speed three-phase drive is disclosed. The drive includes a switchable, undersynchronous converter cascade for driving two mechanically coupled asynchronous motors which have slip ring rotors and which can be connected separately to a three-phas... | 06/28/1977 |
| 4012677 | Speed control for electrically propelled traction vehicles An electrical propulsion control system for self-propelled traction vehicles of the type having a prime mover-driven electric generator supplying energy to traction motors and regulating means for maintaining the electrical output of the generator within ... | 03/15/1977 |
| 3991349 | Droop adjustable control apparatus for direct current motor drives A field-controlled direct current motor is provided with a circuit responsive to armature current which is adjustable as to the amount of armature current representative signal, and the adjusted current representative signal is used to provide a selected ... | 11/09/1976 |
