English Explanatory Dictionary

Woodruff key

English dictionary entry

Meanings

noun
  1. A semicircular key that fits partly into a circular segment keyseat, with the remainder fitting into a longitudinal slot keyway in the mating part.

Word forms

Woodruff key Woodruff keys

Etymology

Developed by William N. Woodruff of Hartford, Connecticut, in the 1880s, to improve on existing keying practice with more economical keyseat cutting; in the era's technological context, this design offered what is today called a DFM improvement (US patent 368744).

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