Background
The name derives from the device's earliest application in mechanical watches, Switzerland and Geneva being an important center of watchmaking. The geneva drive is also commonly called a Maltese cross mechanism due to the visual resemblance.
In the most common arrangement, the driven wheel has four slots and thus advances for each rotation of the drive wheel by one step of 90°. If the driven wheel has n slots, it advances by 360°/n per full rotation of the drive wheel.
Because the mechanism needs to be well lubricated, it is often enclosed in an oil capsule.
Read more about this topic: Geneva Drive
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