Definition

Noun: A toothed wheel in a mechanical timepiece, such as a watch or clock, that interacts with a pallet fork (a rocking lever) to regulate the release of the gear train's energy in precise increments, thereby controlling the timekeeping mechanism. It is the central component of the escapement.

Usage

The term "escape wheel" is used specifically in the context of horology (the study and measurement of time) and mechanical engineering to describe a precise component within a clock or watch movement.

Examples

• The watchmaker carefully cleaned and oiled the delicate escape wheel.
• In a lever escapement, the escape wheel and pallet fork work together to create the characteristic ticking sound.
• A broken tooth on the escape wheel can cause the entire clock to stop.

Advanced Usage

• "To engage the escape wheel": Refers to the action where the pallet fork makes contact with the teeth of the escape wheel, allowing it to advance by one tooth.
  • The precision of the timepiece depends on how smoothly the pallet fork engages the escape wheel.

Variants and Related Words

• Escapement (n): The entire assembly, including the escape wheel and pallet fork, that controls the release of energy in a timepiece.
• Pallet Fork / Anchor (n): The rocking lever that engages with the escape wheel.
• Balance Wheel (n): The oscillating wheel regulated by the escapement's action.

Synonyms

• Scape wheel (archaic/technical synonym).

Notes

The "escape wheel" is never used in a figurative or idiomatic sense. Its meaning is strictly technical and confined to the mechanics of timekeeping devices.

Noun

1. gear that engages a rocking lever