Tide calender disk and method

Details Tide calender disk and method Tide calender disk and method

1993-06-11

1994-10-04

Roskoski, Bernard

Horology: time measuring systems or devices

Astronomical

With tide display

G04B 1926

Patent

active

053532643

ABSTRACT:
A tide disk in combination with a calibration device for calculating state and time of tide comprising a disk with spiral columns of numerals corresponding to calendar days for the duration of a year for use with reference to a clock face, each numeral being separated by an angular separation of 24.4.degree.; the tide disk including a ring segment of distinctly marked calendar months for positioning the calendar dates in spaced angular arrangement in relationship with the numerals on the clock face for determining condition and time of tide, wherein the calibration is established once a year by setting the calibrator device in a "12 o'clock high position" relative to a time of condition of tide on a specified date.

REFERENCES:
patent: 3745313 (1973-07-01), Spilhaus
patent: 3825181 (1974-07-01), Banner
patent: 4035617 (1977-07-01), Banner

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