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cannon pinion tightening tool

human history
  • Description

    cannon pinion tightening tool, Bergeon 30001

    brass and steel tool with U-indentation where 2 chisel-shaped rods meet in centre, with screw below. Steel part on one side for tightening. Wooden box. On tool is "BERGEON / MADE IN SWITZERLAND" and "44", on box lid is sticker reading "MADE IN SWITZERLAND / BERGEON / FABRICATION SUISSE", inner box "GRS" handwritten, base of box "30001 10-9 / 55/" in pencil.

    The cannon pinion of a watch is mounted on the centre wheel, which revolves once and hour and has the minute hand mounted on it. because it is necessary to move the hand forwards or backwards when resetting the time, the cannon pinion is friction tight, enough for the centre wheel to carry the hand forward, but loose enough to allow the hand to be reset either way if required. If adjustment is needed, this tool is used for tightening the cannon pinion.

  • Place
    Switzerland
  • Accession Number
    2004.51.9
  • Accession Date
    02 Jun 2004
  • Other Id

    H609 (horology)

    20001 (Number on object)

    10-9 (Number on object)

    55/ (Number on object)

  • Department

    Applied Arts and Design

cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9,… … Read more

Images and documents

Images

  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY
  • cannon pinion tightening tool, 2004.51.9, H609, 20001, 10-9, 55/, © Auckland Museum CC BY

Artefact

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