8 day clock

from Wikipedia, the free encyclopedia

An 8-day watch is a mechanical clock with a clockwork that lasts at least 168 hours or one week .

With an 8-day watch, manual winding is necessary after a week. An early patent for an eight-day pocket watch was filed by Irenée Aubry in 1888 and granted on January 10, 1889. The clock was named Hebdomas ( Greek griechβδομάς , Latin hebdomada = week). For large clocks and pendulum clocks , an 8-day movement is nothing unusual. 8-day clocks were also used on the first airplanes and automobiles , such as the Maybach Zeppelin DS 8m .

Individual evidence

  1. ↑ a b Wempke watch encyclopedia: eight day work

literature

  • Osterhausen, Fritz von: The great watch lexicon. Heel Verlag, Königswinter 2010, ISBN 978-3898804301 .
  • Pritchard, Kathleen: Swiss Timepiece Makers, 1775–1975. Phoenix Pub, West Kennebunk / Me. 1997, ISBN 978-0914659792 .