lantern wheel
- noun
- Specialized
- The cylindrical bars of a lantern wheel distinguish it from other types of clock gears.
Examples
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The old clock was repaired with a new lantern wheel to restore its function.
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Horologists often prefer pinions, but the lantern wheel design is still found in many antique timepieces.
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The lantern wheel is essential for this clock's mechanism.
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Many lantern wheels are used in budget-friendly clocks.
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The cylindrical bars of a lantern wheel distinguish it from other types of clock gears.
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Horologists often prefer pinions, but the lantern wheel design is still found in many antique timepieces.
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The old clock was repaired with a new lantern wheel to restore its function.
Synonyms
A small wheel used in clocks that has short metal bars instead of teeth
Surface Forms
Morphology
lantern + wheel
Even knowing 'lantern' and 'wheel', a B1 learner would most likely infer a wheel associated with a lantern or shaped like one, not a specific type of gear with cylindrical bars used in clocks. The phrase is a specialised horological term whose precise structural meaning is not predictable from its constituents, so it is effectively idiomatic/technical and opaque to learners.
Etymology
The noun lantern wheel may come from how the small wheel looks: instead of normal teeth it has straight bars like the frame of a little lantern, so the part looks like a tiny lantern made into a wheel. That's why the name came to mean 'a small gear with cylindrical bars used in clocks'.