Solar compass and time indicator device

Details Solar compass and time indicator device Solar compass and time indicator device

1988-04-11

1990-02-13

Cuchlinski, Jr., William A.

Geometrical instruments

Straight-line light ray type

Celestial

33271, G01C 1734

Patent

active

048994510

ABSTRACT:
A solar compass device having a first disc member provided spaced apart time markings indicative of the time of day and disposed in a counterclockwise direction in a circular ring pattern thereon. A second disc member is rotatably displaceable with respect to the first disc member to permit rotational displacement between the first and second disc members with the members disposed in substantially parallel planes. A single fixed indicating marking is provided on the second disc member and aligned with a south end of a north-south radius passing through a center point relative to the ring, and the ring. In operation, the first disc member is oriented with one of the 12 o'clock marking, aligned substantially in the direction of the sun, with the fixed indicating means having been aligned with a marking indicative of approximately the time of day. With the discs so oriented, the north end of the radius is automatically aligned in the direction of the north pole.

REFERENCES:
patent: 963597 (1910-07-01), Lessells
patent: 1258160 (1918-03-01), Slater
patent: 1587413 (1926-06-01), Pond
patent: 2408571 (1946-10-01), Mitchell
patent: 2532324 (1950-12-01), Milligan
patent: 4512085 (1985-04-01), Liddell

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