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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 6712500 | Escapement device for timepiece The invention concerns an escapement device comprising a power source capable of delivering a variable torque based on the angle of rotation of a pinion fixed to said power source, said variable torque having at least a stable position and an unstable position. The ... | 03/30/2004 |
| 5025428 | Electromagnetic escapement for mechanically driven watch or clock A mechanically driven clock, watch, or other timing device having a mechanical energy generator supplying a driving force. A rotatable rotor engages with a driving force resulting in rotational force in a radial direction on the rotor. A magnetically perm... | 06/18/1991 |
| 4272839 | Electric timer An electric timer includes a rotatably mounted operating member which is movable from a datum position to any one of a plurality of angular positions which correspond to periods of time for which it is desired to set the time period. The operating member ... | 06/09/1981 |
| 4199699 | Motor and drive for a timepiece An electronic timepiece including a battery, a drive motor, a drive, a display, and electronic circuits for driving said motor. The motor is a pulse motor and comprises a core, coil, yoke and rotor. The rotor includes a worm gear having worm teeth which e... | 04/22/1980 |
| 4162417 | Electromechanical escapement The present invention has as an object the provision of an electromechanical analogic display device for electronic chronometers, comprising at least an electromagnetic motor controlled by an electrical impulse of short duration. The attractive influence ... | 07/24/1979 |
| 4128992 | Rocking motor for low cost quartz watch A rocking motor for driving an indexing element in a quartz controlled analog wristwatch is impulsed once per minute. The indexing element and the indexed "center" wheel are carried between parallel shunt plates holding the permanent magnet. The driving e... | 12/12/1978 |
| 4007582 | Method and apparatus for synchronizing an electrodynamic clockwork drive A circuit for synchronizing an electrodynamic clockwork drive including two inductors and two permanent magnet assemblies which are moved relative to a clockwork drive by a mechanical oscillation system having the inherent frequency f and the first induct... | 02/15/1977 |
| 3956941 | Escapement-type drive mechanism for watches and the like An escapement-type drive mechanism for watches and the like comprises an escapement wheel formed with a circumferential array of teeth spaced apart by respective radial slots and having displacement faces inclined to respective radii. An angularly oscilla... | 05/18/1976 |
