Horology: time measuring systems or devices – With calendar indicator – Movable ring or disk
Patent
1978-05-19
1980-03-25
Miska, Vit W.
Horology: time measuring systems or devices
With calendar indicator
Movable ring or disk
368199, 368228, G04B 1924, G04B 2700
Patent
active
041943538
ABSTRACT:
Analog display calendar watch having a window or windows and an hour spindle changing device in which the movements of the hour hand and the disc or discs of the calendar are synchronized.
The calendar disc is driven once every 24 hours by a rocker lever which supports a plate having a catch engaging the calendar disc, the plate being rotated by a 24-hour wheel and effecting a whole number, greater than one, of turns in 24 hours. The width of the catch is slightly less than the space between two teeth of the calendar disc, so that any forward or backward movement of the hour hand, controlled by the hour setting spindle, permits an immediate forward or backward movement of the calendar disc.
REFERENCES:
patent: 3177647 (1965-04-01), Meter
patent: 3449905 (1969-06-01), Besson
patent: 3710657 (1973-01-01), Cleusix
patent: 3751901 (1973-08-01), Meitinger et al.
patent: 3882669 (1975-05-01), Jakob
Groothuis Michel
Meylan Serge
Thomi Michel
Compagnie des Montres Longines Francillon SA
Miska Vit W.
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