Time-space clock

Details Time-space clock Time-space clock

1977-12-19

1979-03-06

Grieb, William H.

58 3, G09B 2700

Patent

active

041423062

ABSTRACT:
An educational time-space clock having an oval dial provided with astronomical information; and indicating hands which rotate counterclockwise in proper sequence; as well as the current hour and minute or second indicating hands which also rotate counterclockwise with respect to calibrations of minutes, and hours in Roman numerals, arranged on the dial for counterclockwise reading. An earth hand carries a representation of the earth having an orbiting small ball corresponding to the moon. The second earth hand bears a legend of the speed of light. The hour hand simulates a rocket in flight, and an alarm-timesetting hand is in the form of a lightning bolt. A calendar display and a historical data display are also provided on the front of the clock.

REFERENCES:
patent: 371306 (1887-10-01), Conant
patent: 556486 (1896-03-01), Yaggy
patent: 573091 (1896-12-01), Lindahl
patent: 1153492 (1915-09-01), Hoitinga

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