Universal sun-clock

Details Universal sun-clock Universal sun-clock

1992-09-28

1993-11-30

Cuchlinski, Jr., William A.

Geometrical instruments

Straight-line light ray type

Celestial

33271, G01C 1734

Patent

active

052653455

ABSTRACT:
A universal sun-clock is described comprising a base, on whose surface there are present a sun-dial (consisting of a clock-face and a time-pointing tongue) and a reference mark for orienting the sun-clock according to the longitude and an upright (hinged to an end of a support which can be drawn out from the base) bearing a semicircular sector, free to rotate around a pin, on which sector a latitude scale (graduated from 90.degree. of latitude North to 90.degree. of latitude South) is marked: an index integral with the upright allows to read the latitude on the semicircular sector. When the sun-clock is in a working position the support is drawn out from the base and the upright is rotated around its hinge until it is perpendicular to the base, whereas when the sun-clock is in a rest position, the support is retracted into the base and the upright, by rotating round its hinge, is pulled down onto the base.

REFERENCES:
patent: 2488605 (1949-11-01), Progneaux
patent: 2963790 (1960-12-01), Hall

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