Horology: time measuring systems or devices – Chronological – With mechanical or electromechanical driven display
Patent
1986-03-14
1987-03-31
Miska, Vit W.
Horology: time measuring systems or devices
Chronological
With mechanical or electromechanical driven display
368232, G04B 1920, G04B 1906
Patent
active
046539301
ABSTRACT:
The face of the watch bears a design and has windows set in it in areas which do not affect the design itself. The disk which, in a normal watch, serves to display the day of the week, bears a design corresponding to the central portion of the design on the face. The ring which, in a normal watch, serves to display the date, bears a design corresponding to the portion of the face design which is not on the disk. Owing to this arrangement the design on the face only appears every 217 days without a parasitic image being present in the windows. The rest of the time the disk and the ring cause portions of the design to appear in the windows which give a confused overall appearance.
REFERENCES:
patent: 1183479 (1916-05-01), Meroz
patent: 3321905 (1967-05-01), Krebs
patent: 3803831 (1974-04-01), Horzik
patent: 3890777 (1975-06-01), Spanish
ETA S.A. Fabriques D'Ebauches
Miska Vit W.
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