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Geneva mechanism
The Geneva mechanism is an essential component of many film projectors which works in concert with other projector components such as the shutter and intermittent sprocket in order to transform a film strip composed of static pictures into what appear to be "moving images". It is a mechanism which converts rotational motion into periodic motion.
How it Works
- Dwell state
- Pull-down
Resources
- Wikipedia article on the Geneva Drive
- An article on the Geneva movement (or Maltese Cross mechanism) can be found here here
- Kodak Film Notes "The Intermittent Movement"
- A video animation and explanation of the Geneva movement can be found here