Digital clock

Details Digital clock Digital clock

1976-04-08

1977-12-06

Weldon, Ulysses

Electricity: circuit makers and breakers

Multiple circuit control

Pivoted contact

200 35R, 58125C, 58126E, G04B 2300

Patent

active

040609723

ABSTRACT:
A digital time indicating clock with minutes, tens of minutes and hours numeral indicating drums arranged in an array, in which intermittent rotations of the minutes drum as driven by a clock mechanism are transmitted sequentially intermittently to the tens of minutes and hours drums through time numeral shifting-up mechanism which comprising a first pinion being rotatable about a shaft borne in proximity and parallelly to peripheries of the resepctive drums and meshing with gear teeth on a peripheral edge of the minutes drum and first gear teeth on a peripheral edge of the tens of minutes drum and a second pinion being rotatable about the shaft and meshing with second gear teeth on the other peripheral edge of the tens of minutes drum and gear teeth on a peripheral edge of the hours drum.

REFERENCES:
patent: 2040421 (1936-05-01), Almquist
patent: 3574995 (1971-04-01), Turner
patent: 3609956 (1971-10-01), Funaki
patent: 3636699 (1972-01-01), Marble
patent: 3822808 (1974-07-01), Katakura et al.
patent: 3823552 (1974-07-01), Boyles
patent: 3953965 (1976-05-01), Tobeta

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