Home > Terms > English, UK (UE) > 30-hour train
30-hour train
The 30-hour train has one wheel and pinion fewer than the eight-day clock. In the common 30-hour longcase train, the motion wheels are driven directly from the great-wheel arbor. Many 30-hour spring-driven trains are arranged to have the great wheel driving the centre pinion, whereas in an eight-day going-barrel clock and intermediate wheel and pinion are used.
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- Part of Speech: noun
- Synonym(s):
- Blossary:
- Industry/Domain: Chronometry
- Category: Clock
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