Astronomical clock

Details Astronomical clock Astronomical clock

1986-02-12

1987-08-04

Roskoski, Bernard

Horology: time measuring systems or devices

Astronomical

With sun, earth, and moon display

368 18, H04B 1926

Patent

active

046842608

ABSTRACT:
An astronomical clock shows on a moon disc diametrically opposed images of the sun and the moon or, respectively, two moons which during twenty four hours appear alternately in a semicircular opening and travel through it. Approximate images of the moon phases are rendered with daily advanced moon phase discs which are attached off-center in a rotating fashion on the moon disc.

REFERENCES:
patent: 1126214 (1915-01-01), Herschede
patent: 3721083 (1973-03-01), Jauch
patent: 4548512 (1985-10-01), Erard

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