scape-wheel

English

In this diagram of a longcase clock from the mid-1800s, the part E is labeled as a scape wheel, with e labeled as the scape wheel pinion

Noun

scape-wheel (plural scape-wheels)

1. The wheel in an escapement (as of a clock or a watch) into whose teeth the pallets play.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “scape-wheel”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)