lantern wheel
Học thuậtThân thiện
Definition
Noun: A lantern wheel is a specific type of gear or pinion. Instead of having solid, shaped teeth, it consists of cylindrical bars (like the rungs of a ladder) mounted between two circular disks. This simple design is primarily used in low-cost clock mechanisms.
Usage
The term lantern wheel is a technical noun used in horology (the study of clocks and watches) and mechanical engineering to describe a component. - It functions as the subject or object in a sentence describing a clock's mechanism. - It is often modified by adjectives like "small," "brass," or "inexpensive."
Examples
- The antique clock's movement used a lantern wheel for its striking mechanism.
- Replacing the damaged lantern wheel was essential to get the old timepiece working again.
- His design employed a lantern wheel because it was cheaper to manufacture than a traditional toothed pinion.
Advanced Usage
- Historical Context: The lantern wheel is an early, simple form of gearing. Its use is a hallmark of certain historical clockmaking traditions and less expensive timepieces, as it is easier to construct than cutting precise gear teeth.
- Mechanical Principle: The cylindrical bars of the lantern wheel mesh with the teeth of a regular spur gear. This interaction converts rotational motion, often with some slippage and less precision than modern gear designs.
Variants and Related Words
- Lantern Pinion: This is a direct synonym for lantern wheel. The terms are often used interchangeably.
- Cage Gear: Another less common synonym for a lantern wheel.
- Pinion (n.): A general term for a small gear. A lantern wheel is a specific type of pinion.
- Spur Gear (n.): A gear with straight teeth cut parallel to its axis. This is the type of gear that typically meshes with a lantern wheel.
Synonyms
- Lantern pinion
- Cage gear
Antonyms
- Spur gear (as a design contrast, not a direct functional opposite)
- Toothed pinion (emphasizing the difference in design)
Notes
- The lantern wheel is not typically associated with idioms or phrasal verbs, as it is a highly specific technical term.
- Its usage is almost entirely confined to discussions of mechanics, clock repair, and historical technology.
Noun
- a small pinion having cylindrical bars instead of teeth, used chiefly in inexpensive clocks