Horology: time measuring systems or devices – With calendar indicator – Setting or resetting
Patent
1979-02-23
1981-04-07
Truhe, J. V.
Horology: time measuring systems or devices
With calendar indicator
Setting or resetting
368 31, 368 28, G04B 1924, G04B 2700, G04B 1920, G04B 300
Patent
active
042610460
ABSTRACT:
In an analog timepiece having calendar displays for day and date, a transducer operating independently of the hand driving transducer, feeds, that is, updates the calendar wheels automatically on a daily basis. Synchronization of the daily day and date changes is provided by a twenty-four hour wheel cooperating with the time-keeping mechanism. For setting the calendar displays, turning the stem in one direction polarizes a magnet and advances the day wheel, while turning the stem in the other direction reverses the polarity of the magnet and advances the date dial until desired settings are accomplished. The date advancing transducer can be automatically actuated for end of the month date adjustments.
REFERENCES:
patent: 3815351 (1974-06-01), Vovelle
patent: 3855785 (1974-12-01), Ushikoshi
Ikegami Toshimasa
Ono Tsuneyoshi
Conklin John B.
Kabushiki Kaisha Suwa Seikosha
Truhe J. V.
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