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The Encyclopedia of Horology

Component record · Keyless work

Winding Pinion

Partially verified

Fixed-position gear

What it does

Transmits rotation to crown wheel

How it works

Evolution

Engages with clutch wheel

Known variations

    Identification for collectors

      Common failure modes

      • Burrs

      Diagram

      crownsliding clutchsetting wheelswinding pinion and ratchet
      Schematic: keyless winding and hand setting. An outline schematic drawn to show the arrangement of the parts discussed here. It is not a dimensioned working drawing and does not depict a particular maker's calibre.

      Sources & references

      1. de Carle, D., Practical Watch Repairing
      2. de Carle, D., Watch and Clock Encyclopedia
      3. Daniels, G., Watchmaking

      Where sources disagree, the disagreement is stated rather than resolved silently.