Revision (clock)

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In watchmaking, a revision is the overhaul / repair of a clockwork . It is the task of the rhabilleur .

principle

The revision (or revision ) comprises different work steps. First, the watch is dismantled to remove the movement . The function of the winding mechanism ( crown and power reserve ) and the escapement are checked. The clockwork and the gear train are checked for functionality, the clockwork is then dismantled into its individual parts. The teeth of drives and wheels as well as their journals and bearings may be reworked or replaced. The cleaning usually takes place in an ultrasonic bath . The balance is balanced. After assembling the individual parts, the escapement is adjusted. The movement is lubricated with watch oil, after which the function of the reassembled movement is checked. Then the dial and the clock hands are mounted and, after a regulator, the clockwork is reinstalled in the case.

Care and maintenance of the watch case (cleaning, replacement of sealing rings ), battery changes and similar little things are not part of the overhaul (although they are usually taken care of at the same time during an overhaul in the retail trade).

literature

  • Otto Böckle, Wilhelm Brauns: Textbook for the watchmaking trade. Work skills and materials. 8-10 Edition. Wilhelm Knapp, Halle (Saale) 1951 (reprint, edited by Michael Stern. Heel, Königswinter 2010, ISBN 978-3-86852-288-4 ).
  • Michael J. Mehltretter: Buying and revising old automatic watches. In: Classic watches. No. 6, 1995, pp. 32-48.
  • Hermann Brinkmann: Introduction to watchmaking (= The watchmaking school. Vol. 2). 10th unchanged edition. Wilhelm Knapp, Düsseldorf 2005, ISBN 3-87420-010-8 .
  • George Daniels : Watchmaking. Updated 2011 edition. Philip Wilson Publishers, London 2011, ISBN 978-0-85667-704-5 .