Driven pendulum apparatus and method of operation thereof

A pendulum apparatus and method of operation which is driven to compensate for frictional and other losses to maintain the pendulum operating over extended periods of time. The method and apparatus is particularly useful in the operation of Foucault pendulums. A vertically movable member is driven a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	MARK STREITMAN
Format:	Patent
Sprache:	eng
Schlagworte:	ELECTROMECHANICAL CLOCKS OR WATCHES HOROLOGY MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL MECHANICALLY-DRIVEN CLOCKS OR WATCHES PHYSICS TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
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Beschreibung
Zusammenfassung:	A pendulum apparatus and method of operation which is driven to compensate for frictional and other losses to maintain the pendulum operating over extended periods of time. The method and apparatus is particularly useful in the operation of Foucault pendulums. A vertically movable member is driven and a controller is provided which operates initially in the calibration mode for determining the natural frequency of the pendulum apparatus and is then operated in the driving mode. The pivot mechanism is relatively inexpensive and reliable and includes an adapter member with a mounting membrane of flexible material and defining a membrane aperture. A suspension line is secured extending through this aperture and a bob is secured thereto.