Timepiece calendar mechanism

Details Timepiece calendar mechanism Timepiece calendar mechanism

1975-11-04

1977-09-20

Witkowski, Stanley J.

58 5, 58 58, G04B 1924

Patent

active

040487954

ABSTRACT:
A timepiece calendar mechanism which includes a monthly date ring having a circular set of internal teeth and a day-of-the-week disc disposed within the interior space of the date ring and concentric therewith, the day disc having a circular set of external gear teeth. Pivotally mounted between the two sets of gear teeth is a twin jumper having oppositely-directed arms whose free ends are provided with detents which respectively engage the sets of teeth.

REFERENCES:
patent: 3451211 (1969-06-01), Nakagawa
patent: 3527047 (1970-09-01), Bolle

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