Horology: time measuring systems or devices – Astronomical – With tide display
Patent
1992-02-03
1993-12-14
Roskoski, Bernard
Horology: time measuring systems or devices
Astronomical
With tide display
G04B 1926
Patent
active
052709868
ABSTRACT:
Improved nautical clock apparatus and methods are provided. The nautical clock apparatus is basically comprised of a clock base and a tide state indicator attached to the base. Means are attached to the tide state indicator and to the base for causing the indicator to indicate the tide state based on a time of about 12 hours and 25.235 minutes between high tides and a continuous correction to such time which lengthens and shortens such time on a cycle whereby it is longer during one or more portions of each lunar month and shorter during one or more other portions of each lunar month.
REFERENCES:
patent: 4993002 (1992-02-01), Kerr
patent: 5086417 (1992-02-01), Kerr
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